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机械设计中英文外文翻译文献

(文档含英文原文和中文翻译)中英文资料外文翻译Fundamentals Of Machinery DesignThis introductory chapter is a general survey of machinery design．First it presents the definition and major role of machinery design，the relationship between machineryand its components．Then it gives an overview of machinery design as a fundamental course and outlines a general procedure of machinery design followed by all the engineers．Finally, it lists the contents of the course and the primary goals to be achieved．1．1 The role of machinery designMachinery design is to formulate all engineering plan．Engineering in essence is to utilize the existing resources and natural law to benefit humanity．As a major segment of engineerin，machinery design involves a range of disciplines in materials，mechanics，heat，flow，control，electronics and production．Although many hightechnologies are computerized and automated，and are rapidly merged into Our daily life，machines are indispensable for various special work that is difficult or impracticable to be carried out by human．Moreover，machinery can significantly improve efficiency and quality of production，which is crucial in current competitive global market．In the modern industrialized world，the wealth and living standards of a nation are closely linked with their capabilities to design and manufacture engineering products．It can be claimed that the advancement of machinery design and manufacturing can remarkable promote the overall level of a country’s industrialization．Those nations，who do not perform well in design and manufacture fields，are not competitive in world markets．It is evident that several countries that used to be leaders in the design and manufacturing sectors until the l 960s and the1 970s had，by the l990s，slipped back and lost their leadership．On the contrary, our Country is rapidly picking up her position in manufacturing industry since the l 9 80s and is playing a more and more vital role in the global market．To accelerate such an industrializing process of our country, highly skilled design engineers having extensiveknowledge and expertise are needed．That is why the course of machinery design is of great significance for students of engineering．The course of machinery design is considerable different from those background subjects in science and mathematics．For many students，it is perhaps one of their basic professional engineering courses concerned with obtaining solutions to practical problem s．Definitely these solutions must clearly represent an understanding of the underlying science，usually such an understanding may not be sufficient，empirical knowledge or engineering judgement has to be also involved．Furthermore，due to be professional nature of this subject，most design problems may not have one right solution．Nevertheless it is achievable to determine a better design from all feasible solutions．1．2 Machinery and componentsA state-of-the-art machine may encompass all or part of mechanical，electrical，control，sensor，monitoring and lubricating sub—systems．Intermsof the functions of those parts，the machine can also be viewed to be comprised of power，transmission，execution and control／manipulation parts．Regardless of the complexity, however，the major functional part may be still the mechanical system．Forconvenience of analysis，the mechanical system can be decomposed int0．mechanisms that are designed to execute some specific tasks．And the mechanism can be further decomposed into mechanical components．In this sense，the mechanical components are the fundamental elements of machinery．On the whole，mechanical components can be classified as universal and special components．Bolts，gear and chains are the typical examples of the universal components which can be used extensively in different machines across various industrial sectors．Turbine blades，crankshaft and aircraft propeller are the examples ofthe special components，which Can be used extensively in different machines across various industrial sectors．turbine blades，crankshaft and aircraft propeller arethe examples of the special components，which are designed for some specific purposes．In addition to this，if a number of components are manufactured，assembled and even equipped as an individual system，e．g．leaf spring setin a vehicle，it is also termed as a mechanical part．A good machine definitely requires quality individual components．Thus，the design of components is very important．When designing a machine，on the otherhand，engineers invariably find that requirements and constraints of its components areinterrelated．As a local portion，the component is expected to play a certain role on the machine and therefore must be appropriately restrained by the whole system．The design of a gear drive in a speed—reducer，for instance，depends upon not only the strength and stiffness，but also the space available for the gears in the shaft and relation with other transmission drive．This means that the design of the mechanical components inevitably requires a whole view in the whole system．Due to relationship between a machine and its components，the process of machinery design usually covers interconnected designs of machine，parts，and components．Any modification and adjustment in one component may considerably affect the designs of other components or parts．To present the best possible design solution，the iteration of evaluation，analysis and optimization across all the process seem indispensable．1．3 Overview of machinery designThis course is primarily concerned with the design of specific components of machines or mechanical systems．Competence in this area is basic to the consideration and synthesis of complete machines and systems in subsequent courses and professional practice．It Can be seen that even the design of a single bolt or spring needs the designer’s thorough understanding of the principles and methods ofmachinery design together with empirical information，good judgment and even a degre3e of ingenuity in order to produce the best product for the society today．It is natural that designing engineers give first consideration to the functional and economic aspects of new products or devices．Machinery design needs to ensure safetyand reliability in a prescribed lifetime．To address such a problem conventionally，the technical consideration of the mechanical component design is largely centered around two main areas of concerns：(1) strength-stiffness-stability criteria involving the bulk of a solid member and (2) surface phenomena including friction，lubrication，weal7，and environmental deterioration．However，in comparison with such relatively straightforward computations as stress and deflection，the design determination of safety and reliability is likely to be an elusive and indefinite matter，complicated by psychological and sociological factors．It must be kept in mind that safety and reliability are inherently relative to each other，and the value judgmentsmust be made with regard to trade—offs between safety，reliability，cost，weight，and soforth．On the other hand，a practical design needs to reflect clearly manufacturability and economy to make sure of the lowest cost as well as the least consumption of energy and materials．Otherwise，the products or devices designed will be of no further engineering or commercial interests．Nowadays，the simultaneous considerations of manufacturing and assembly factors phases including design，manufacturing，inspection，asassembly and other is considered in such a parallel fashion that the quality and cost arebest satisfied concurrently．In addition to these traditionally technological and economic considerations fundamental to the design and development of mechanical components and systems，the modern engineers have become increasingly concerned with the broader considerations of sustainability，ecology，aesthetics，ergonomics，maintainability，andoverall quality of life．It is clear that a greater than ever engineering effort is being recently devoted to broader considerations relating to the influences of engineered products on people as well as on the environment．The following is a list of general factors for engineers to consider in the design process，which from a different viewpoint shows us a panoramic picture with regard to the design-related activities and tasks．(1) Cost of manufacturing．Will the selling price be competitive? Are there cheaper ways of manufacturing the machine? Could other materials be used? Are any special tools，dies, jigs，or fixtures needed? Can it easily be inspected? Can the workshop produce it? Is heat treatment necessary? Can parts be easily welded?第4页Cost of operation．Are power requirements too large? What type of fuelwill be used? Will operation cost be less expensive?(3) Cost of maintenance．Are all parts easily accessible? Are access panels needed? Can common tools be used? Can replacement parts be available?(4) Safety features．Is a suitable factor of safety used? Does the safety factor meet existing codes? Are fuses，guards，and／or safety valves used? Are shear pins needed? Is there any radiation hazard? Any overlooked ”stress raiser”? Are there any dangerous fumes?(5) Packaging and transportation．Can the machine be readily packaged for shipping without breakage? Is its size suitable to parcel post regulations, freight car dimensions，or trailer truck size? Are shipping bolts necessary? Is its center of gravity in a desirable location?(6) Lubrication．Does the system need periodic checking? Is it automatic? Isit a sealed system?(7) Materials．Are chemical，physical，and mechanical properties suitable to its use? Is corrosion a factor? Will the materials withstand impact? Is thermal or electrical conductivity important? Will high or low temperatures present any problem? Will design stress keep parts reasonable in size?(8) Strength．Have dimensions of components been carefully calculated? Have all the load cases be taken into account? Have the stress concentrations been carefully considered? Has the fatigue effect be computed?(9) Kinematics．Does it provide necessary motion for moving parts? Are rotational speeds reasonable? Could linkages replace cams? What will be the best choice，the belts，chains or gears? Is intermittent motion needed?(10) Styling．Does the color have eye appeal? Is the sharp desirable? Is the machine well proportioned? Are the calibrations on dials easily read? Are the controls easy to operate?(11) Drawings．Are standardized parts used? Are the tolerances realistic? Is the surface finish over-specified? Must the design conform to any standards?(12) Ergonomics．Has the operator of the equipment been considered? Are the controls conveniently located to avoid operator fatigue? Are knobs，grab bars，hand wheels，levers，and dial calibrations of proper size to fit the average operator?1．4 A general procedure of machinery designWhatever design tasks the designers are expected to complete，theyalways，consciously or unconsciously，follow the similar process which goes as follows：(1)Studies of feasibilityAfter understanding the product functions，operational conditions，manufacturing constraints and key technologies，go on to uncover existing solutions to some similar problems so as to clarify the design tasks，understand the needs，present the major functional parameters and evaluate design tasks，proposal of design aims，and feasibility analysis．(2) Conceptual design of configurationAccording to the design of tasks and functional parameter，designs need to extensively search for various feasible configurations and alternatives．Forconvenience，usually，the system can be analyzed comprehensively by decomposing itinto power sources，transmission and work mechanisms．A great effort needs to be devoted to the analysis and synthesis of these different parts．For example，the power source may be selected from motor，engine and turbine．Each power source may have a range of power and kinematical parameters ．Similarly, power trains may have numerous optionsavailable，e．g．belts，chains，gears，worm gears and many other drives．Obviously selecting an appropriate configuration would guarantee the Success of the whole design and the quality of the products．To make a best possible decision，an iterative process is normally required to select，analyze，compare and evaluate different configurations．At this stage，the goals involve sketching of configuration，determination of kinematical mechanisms，and evaluation of functional parameter(power and kinematics)．(3)Detailed technical designBased on the design of configuration and parameters，a number ofassembly and component drawings will be completed to reflect the detaileddesign including kinematics，power，strength，stiffness，dynamics，stability，fatigue and SO on．Consideration should also be given to manufacturingfactors by presenting structural details，materials，and both geometricand dimensional tolerances．This part of work will also be carried out ina repeated process in drawings，calculation，evaluation and modificationuntil a best possible design is achieved．The goal at this stage is tocomplete assembly and component drawings，structural details，design calculations and detailed technical documentations．(4)Modification of designAfter the design is completed，a prototype is usually made for a more realistic physical assessment of the design quality．This will help correct any drawback or fault that may be overlooked or neglected during the design process．At this stage，the goal is to correct the design imperfection，test the potential manufacturing or assembly flaws and refine /improve design．1．5 Contents and tasks of the courseThe course Machinery Design will cover the following contents：(1)Preliminaries．the fundamental principles of machinery andComponents design，design theory，selection of materials，structure，friction，wear and lubrication．(2)Connection．sand．joints．thread．fasteners，keys，rivets，welds，bonds ．and adhesive and interference joints．(3)Transmission．screws，chains，belts，gears，worms，bevel．gearsAnd helical gears．(4)Shaft．system．rolling—contact．bearings，slidingbearings，clutches，couplings，shafts，axles and spindles．(5)Other part s．springs，housings and frame s．The course centers on engineering design of mechanical components andis in a category of fundamental methodology and procedure．It is notfeasible or realistic for the students to become involved in the detaileddesign considerations associated with all machine components．Instead，the textbook has its main focus on some typical components and parts．However，the methodologies and procedures to be developed in this course can beextended to more design cases．For this reason，an emphasis will be laidon the methods and procedure s over the course so that the student s willgain a certain competence in applying these skills and knowledge todesigning more mechanical components．As a professional fundamental course，it will help students to acquirea sol id knowledge of mechanical design and engineering awareness．More specifically，the course will help to develop the students’ competence inthe following facets：Competence of creative design and solving practical problem；Competence of team work as well as professional presentation and communications：Competence of apprehending the design principles andregulations，synthesizing the knowledge to develop new designs：Competence of engineering research as well as using designcode s，handbooks，standards and references：Competence of doing experiments to solve problem in the design oftypical components：Competence of understanding newly introduced technological as well aseconomic codes to update the knowledge of machinery design．It is worth noticing that the course will also integrate a number ofpreceding relevant subjects at the university—level ，including mathematics ，physics，electronics，chemistry，solid mechanics，fluid mechanics，heat transfer，thermodynamics，computin9，and so forth．It will combine the knowledge about science and professional skills to solve some practical engineering problems，which will significantly advance students’ competence and enlarge their vision to the professional engineers．It should be pointed out that skills and experience could beacquired only by a great deal of practice——hour after monotonous hour ofit．It is acknowledged universally that nothing worthwhile in life canbe achieved without hard work，often tedious，dull and monotonous，and engineering is no exception．机械设计的基本原则这个导言章节是对机械设计的一个纵览。

(机械设计理论)双语版

Machine design theory（机械设计理论）——中英文对照The machine design is through designs the new product or improves the old product to meet the human need the application technical science. It involves the project technology each domain, mainly studies the product the size, the shape and the detailed structure basic idea, but also must study the product the personnel which in aspect the and so on manufacture, sale and use question.Carries on each kind of machine design work to be usually called designs the personnel or machine design engineer. The machine design is a creative work. Project engineer not only must have the creativity in the work, but also must in aspect and so on mechanical drawing, kinematics, engineerig material, materials mechanics and machine manufacture technology has the deep elementary knowledge.If front sues, the machine design goal is the production can meet the human need the product. The invention, the discovery and technical knowledge itself certainly not necessarily can bring the advantage to the humanity, only has when they are applied can produce on the product the benefit. Thus, should realize to carries on before the design in a specific product, must first determine whether the people do need this kind of productMust regard as the machine design is the machine design personnel carries on using creative ability the product design, the system analysis and a formulation product manufacture technology good opportunity. Grasps the project elementary knowledge to have to memorize some data and the formula is more important than. The merely service data and the formula is insufficient to the completely decision which makes in a good design needs. On the other hand, should be earnest precisely carries on all operations. For example, even if places wrong a decimal point position, also can cause the correct design to turn wrongly.A good design personnel should dare to propose the new idea, moreover is willing to undertake the certain risk, when the new method is not suitable, use original method. Therefore, designs the personnel to have to have to have the patience, because spends the time and the endeavor certainly cannot guarantee brings successfully. A brand-new design, the request screen abandons obsoletely many, knows very well the method for the people. Because many person of conservativeness, doesthis certainly is not an easy matter. A mechanical designer should unceasingly explore the improvement existing product the method, should earnestly choose originally, the process confirmation principle of design in this process, with has not unified it after the confirmation new idea.Newly designs itself can have the question occurrence which many flaws and has not been able to expect, only has after these flaws and the question are solved, can manifest new goods come into the market the product superiority. Therefore, a performance superior product is born at the same time, also is following a higher risk. Should emphas ize, if designs itself does not request to use the brand-new method, is not unnecessary merely for the goal which transform to use the new method.In the design preliminary stage, should allow to design the personnel fully to display the creativity, not each kind of restraint. Even if has had many impractical ideas, also can in the design early time, namely in front of the plan blueprint is corrected. Only then, only then does not send to stops up the innovation the mentality. Usually, must propose several sets of design proposals, then perform the comparison. Has the possibility very much in the plan which finally designated, has used certain not in plan some ideas which accepts.How does the psychologist frequently discuss causes the machine which the people adapts them to operate. Designs personnel''s basic responsibility is diligently causes the machine to adapt the people. This certainly is not an easy work, because certainly does not have to all people to say in fact all is the most superior operating area and the operating process.Another important question, project engineer must be able to carry on the exchange and the consultation with other concerned personnel. In the initial stage, designs the personnel to have to carry on the exchange and the consultation on the preliminary design with the administrative personnel, and is approved. This generally is through the oral discussion, the schematic diagram and the writing material carries on. In order to carry on the effective exchange, needs to solve the following problem:(1) designs whether this product truly does need for the people? Whether there is competitive ability(2) does this product compare with other companies'' existing similar products?(3) produces this kind of product is whether economical?(4) product service is whether convenient?(5) product whether there is sale? Whether may gain?Only has the time to be able to produce the correct answer to above question. But, the product design, the manufacture and the sale only can in carry on to the above question preliminary affirmation answer foundation in. Project engineer also should through the detail drawing and the assembly drawing, carries on the consultation together with the branch of manufacture to the finally design proposal.Usually, can have some problem in the manufacture process. Possibly can request to some components size or the common difference makes some changes, causes the components the production to change easily. But, in the project change must have to pass through designs the personnel to authorize, guaranteed cannot damage the product the function. Sometimes, when in front of product assembly or in the packing foreign shipment experiment only then discovers in the design some kind of flaw. These instances exactly showed the design is a dynamic process. Always has a better method to complete the design work, designs the personnel to be supposed unceasingly diligentlyRecent year, the engineerig material choice already appeared importantly. In addition, the choice process should be to the material continuously the unceasing again appraisal process. The new material unceasingly appears, but some original materials can obtain the quantity possibly can reduce. The environmental pollution, material recycling aspect and so on use, worker''s health and security frequently can attach the new limiting condition to the choice of material. In order to reduce the weight or saves the energy, possibly can request the use different material. Comes from domestic and international competition, to product service maintenance convenience request enhancement and customer''s aspect the and so on feedback pressure, can urge the people to carry on to the material reappraises. Because the material does not select when created the product responsibility lawsuit, has already had the profound influence. In addition, the material and between the material processing interdependence is already known by the people clearly.Therefore, in order to can and guarantees the quality in the reasonable cost under the premise to obtain satisfaction the result, project engineer makes engineers all to have earnestly carefully to choose, the determination and the use material.Makes any product the first step of work all is designs. Designs usually may divide into several explicit stages: (a) preliminary design; (b) functional design;(c) production design. In the preliminary design stage, the designer emphatically considered the product should have function. Usually must conceive and consider several plans, then decided this kind of thought is whether feasible; If is feasible, then should makes the further improvement to or several plans. In this stage, the question which only must consider about the choice of material is: Whether has the performance to conform to the request material to be possible to supply the choice; If no, whether has a bigger assurance all permits in the cost and the time in the limit develops one kind of new material.In the functional design and the engineering design stage, needs to make a practical feasible design. Must draw up the quite complete blueprint in this stage, chooses and determines each kind of components the material. Usually must make the prototype or the working model, and carries on the experiment to it, the appraisal product function, the reliability, the outward appearance and the service maintenance and so on. Although this kind of experiment possibly can indicate, enters in the product to the production base in front of, should replace certain materials, but, absolutely cannot this point take not earnestly chooses the material the excuse. Should unify the product the function, earnestly carefully considers the product the outward appearance, the cost and the reliability. Has the achievement very much the company when manufacture all prototypes, selects the material should the material which uses with its production in be same, and uses the similar manufacture technology as far as possible. Like this has the advantage very much to the company. The function complete prototype if cannot act according to the anticipated sales volume economically to make, or is prototypical and the official production installment has in the quality and the reliable aspect is very greatly different, then this kind of prototype does not have the great value. Project engineer is best can completely complete the material in this stage the analysis, the choice and the determination work, but is not remains it to the production design stage does. Because, is carries on in the production design stage materialreplacement by other people, these people are inferior to project engineer to the product all functions understanding. In the production design stage, is should completely determine with the material related main question the material, causes them to adapt with the existing equipment, can use the existing equipment economically to carry on the processing, moreover the material quantity can quite be easy to guarantee the supply.In the manufacture process, inevitably can appear to uses the material to make some changes the situation. The experience indicated that, may use certain cheap materials to take the substitute. However, in the majority situation, in will carry on the production later to change the material to have in to start before the production to change the price which the material will spend to have to be higher than. Completes the choice of material work in the design stage, may avoid the most such situations. Started after the production manufacture to appear has been possible to supply the use the new material is replaces the material the most common reason. Certainly, these new materials possibly reduce the cost, the improvement product performance. But, must carry on the earnest appraisal to the new material, guarantees its all performance all to answer the purpose. Must remember that, the new material performance and the reliable very few pictures materials on hand such understood for the people. The majority of products expiration and the product accident caused by negligence case is because in selects the new material to take in front of substitution material, not truly understood their long-term operational performance causes.The product responsibility lawsuit forces designs the personnel and the company when the choice material, uses the best procedure. In the material process, five most common questions are: (a) did not understand or cannot use about the material application aspect most newly the best information paper; (b) has not been able to foresee and to consider the dusk year possible reasonable use (for example to have the possibility, designs the personnel also to be supposed further to forecast and the consideration because product application method not when creates consequence.In r ecent years many products responsibilities lawsuit case, because wrongly uses the plaintiff which the product receives the injury to accuse produces the factory, and wins the decision); (c) uses the material data not entire perhaps some data areindefinite, works as its long-term performance data is the like this time in particular; (d) the quality control method is not suitable and not after the confirmation; (e) the personnel which completely is not competent for the post by some chooses the material.Through to the above five questions analysis, may obtain these questions is does not have the sufficient reason existence the conclusion. May for avoid these questions to these questions research analyses the appearance indicating the direction. Although uses the best choice of material method not to be able to avoid having the product responsibility lawsuit, designs the personnel and the industry carries on the choice of material according to the suitable procedure, may greatly reduce the lawsuit the quantity.May see from the above discussion, the choice material people should to the material nature, the characteristic and the processing method have comprehensive and the basic understanding.机械设计理论机械设计是一门通过设计新产品或者改进老产品来满足人类需求的应用技术科学。

机械设计本科(双语教学课程)理论力学教案

机械设计本科(双语教学课程)理论力学教案一、课程介绍1.1 课程背景理论力学是机械设计及其相关专业的一门基础课程，对于培养具有创新能力和实践能力的复合型人才具有重要意义。

通过本课程的学习，使学生掌握理论力学的基本概念、基本理论和基本方法，具备分析力学问题的能力，为后续课程的学习以及从事机械设计等工作打下基础。

1.2 课程目标（1）掌握理论力学的基本概念、基本理论和基本方法。

（2）培养学生的空间想象能力、逻辑思维能力和创新能力。

（3）提高学生的数学素质和运用数学工具解决实际问题的能力。

（4）具备分析力学问题的能力，为后续课程的学习以及从事机械设计等工作打下基础。

二、教学内容2.1 教学基本要求（1）了解理论力学的基本概念，如力、速度、加速度等。

（2）掌握牛顿运动定律，了解力学的基本定律。

（3）熟悉常用的力学定理，如合成与分解、平衡条件、摩擦力等。

（4）掌握刚体运动的基本形式，如平移、旋转等。

（5）了解曲线运动和相对运动的概念。

2.2 教学重点与难点（1）重点：牛顿运动定律、力学定理、刚体运动、曲线运动等。

（2）难点：力学问题的求解、空间想象能力的培养、创新能力的提升等。

三、教学方法与手段3.1 教学方法（1）采用讲授与讨论相结合的方式，激发学生的学习兴趣和积极性。

（2）注重实际例子与理论相结合，提高学生的应用能力。

（3）开展课堂互动，鼓励学生提问、发表见解，培养学生的思维能力。

（4）注重培养学生的空间想象能力和创新能力，开展相关的实践活动。

3.2 教学手段（1）利用多媒体课件，直观展示力学现象和问题，提高学生的理解能力。

（2）使用模型和实物，帮助学生建立空间想象，加深对力学概念的理解。

（3）利用计算机软件，如MATLAB等，进行力学问题的求解和分析。

四、教学安排4.1 课时安排本课程共计32课时，每个课时45分钟。

4.2 教学进度安排（1）第1-8课时：基本概念、牛顿运动定律、力学定理。

（2）第9-16课时：刚体运动、曲线运动、相对运动。

(机械设计理论)中英文对照 Machine design theory

机械设计理论The machine design theoryThe machine design is through designs the new product or improves the old product to meet the human need the application technical science. It involves the project technology each domain, mainly studies the product the size, the shape and the detailed structure basic idea, but also must study the product the personnel which in aspect the and so on manufacture, sale and use question.Carries on each kind of machine design work to be usually called designs the personnel or machine design engineer. The machine design is a creative work. Project engineer not only must have the creativity in the work, but also must in aspect and so on mechanical drawing, kinematics, engineerig material, materials mechanics and machine manufacture technology has the deep elementary knowledge.If front sues, the machine design goal is the production can meet the human need the product. The invention, the discovery and technical knowledge itself certainly not necessarily can bring the advantage to the humanity, only has when they are applied can produce on the product the benefit. Thus, should realize to carries on before the design in a specific product, must first determine whether the people do need this kind of productMust regard as the machine design is the machine design personnel carries on using creative ability the product design, the system analysis and a formulation product manufacture technology good opportunity. Grasps the project elementary knowledge to have to memorize some data and the formula is more important than. The merely service data and the formula is insufficient to the completely decision which makes in a good design needs. On the other hand, should be earnest precisely carries on all operations. For example, even if places wrong a decimal point position, also can cause the correct design to turn wrongly.A good design personnel should dare to propose the new idea, moreover is willing to undertake the certain risk, when the new method is not suitable, use original method. Therefore, designs the personnel to have to have to have the patience, because spends the time and the endeavor certainly cannot guarantee brings successfully. A brand-new design, the request screen abandons obsoletely many, knows very well the method for the people. Because many person of conservativeness, does this certainly is not an easy matter. A mechanical designer should unceasingly explore the improvement existing product the method, should earnestly choose originally, the process confirmation principle of design in this process, with has not unified it after the confirmation new idea.Newly designs itself can have the question occurrence which many flaws and has not been able to expect, only has after these flaws and the question are solved, can manifest new goods come into the market the product superiority. Therefore, a performance superior product is born at the same time, also is following a higher risk. Should emphas ize, if designs itself does not request to use the brand-new method, is not unnecessary merely for the goal which transform to use the new method.In the design preliminary stage, should allow to design the personnel fully to display the creativity, not each kind of restraint. Even if has had many impractical ideas, also can in the design early time, namely in front of the plan blueprint is corrected. Only then, only then does not send to stops up the innovation the mentality. Usually, must propose several sets of design proposals, then perform the comparison. Has the possibility very much in the plan which finally designated, has used certain not in plan some ideas which accepts.How does the psychologist frequently discuss causes the machine which the people adapts them to operate. Designs personnel''s basic responsibility is diligently causes the machine to adapt the people. This certainly is not an easy work, because certainly does not have to all people to say in fact all is the most superior operating area and the operating process.Another important question, project engineer must be able to carry on the exchange and the consultation with other concerned personnel. In the initial stage, designs the personnel to have to carry on the exchange and the consultation on the preliminary design with the administrative personnel, and is approved. This generally is through the oral discussion, the schematic diagram and the writing material carries on. In order to carry on the effective exchange, needs to solve the following problem:(1) designs whether this product truly does need for the people? Whether there is competitive ability(2) does this product compare with other companies'' existing similar products?(3) produces this kind of product is whether economical?(4) product service is whether convenient?(5) product whether there is sale? Whether may gain?Only has the time to be able to produce the correct answer to above question. But, the product design, the manufacture and the sale only can in carry on to the above question preliminary affirmation answer foundation in. Project engineer also should through the detail drawing and the assembly drawing, carries on the consultation together with the branch of manufacture to the finally design proposal.Usually, can have some problem in the manufacture process. Possibly can request to some components size or the common difference makes some changes, causes the components the production to change easily. But, in the project change must have to pass through designs the personnel to authorize, guaranteed cannot damage the product the function. Sometimes, when in front of product assembly or in the packing foreign shipment experiment only then discovers in the design some kind of flaw. These instances exactly showed the design is a dynamic process. Always has a better method to complete the design work, designs the personnel to be supposed unceasingly diligently.Recent year, the engineerig material choice already appeared importantly. In addition, the choice process should be to the material continuously the unceasing again appraisal process. The new material unceasingly appears, but some original materials can obtain the quantity possibly can reduce. The environmental pollution, material recycling aspect and so on use, worker''s health and security frequently can attach the new limiting condition to the choice of material. In order to reduce the weight or saves the energy, possibly can request the use different material. Comes from domestic and international competition, to product service maintenance convenience request enhancement and customer''s aspect the and so on feedback pressure, can urge the people to carry on to the material reappraises. Because the material does not select when created the product responsibility lawsuit, has already had the profound influence. In addition, the material and between the material processing interdependence is already known by the people clearly.Therefore, in order to can and guarantees the quality in the reasonable cost under the premise to obtain satisfaction the result, project engineer makes engineers all to have earnestly carefully to choose, the determination and the use material.Makes any product the first step of work all is designs. Designs usually may divide into several explicit stages: (a) preliminary design; (b) functional design; (c) production design. In the preliminary design stage, the designer emphatically considered the product should have function. Usually must conceive and consider several plans, then decided this kind of thought is whether feasible; If is feasible, then should makes the further improvement to or several plans. In this stage, the question which only must consider about the choice of material is: Whether has the performance to conform to the request material to be possible to supply the choice; If no, whether has a bigger assurance all permits in the cost and the time in the limit develops one kind of new material.In the functional design and the engineering design stage, needs to make a practical feasible design. Must draw up the quite complete blueprint in this stage, chooses and determines each kind of components the material. Usually must make the prototype or the working model, and carries on the experiment to it, the appraisal product function, the reliability, the outward appearance and the service maintenance and so on. Although this kind of experiment possibly can indicate, enters in the product to the production base in front of, should replace certain materials, but, absolutely cannot this point take not earnestly chooses the material the excuse. Should unify the product the function, earnestly carefully considers the product the outward appearance, the cost and the reliability. Has the achievement very much the company when manufacture all prototypes, selects the material should the material which uses with its production in be same, and uses the similar manufacture technology as far as possible. Like this has the advantage very much to the company. The function complete prototype if cannot act according to the anticipated sales volume economically to make, or is prototypical and the official production installment has in the quality and the reliable aspect is very greatly different, then this kind of prototype does not have the great value. Project engineer is best can completely complete the material in this stage the analysis, the choice and the determination work, but is not remains it to the production design stage does. Because, is carries on in the production design stage material replacement by other people, these people are inferior to project engineer to the product all functions understanding.In the production design stage, is should completely determine with the material related main question the material, causes them to adapt with the existing equipment, can use the existingequipment economically to carry on the processing, moreover the material quantity can quite be easy to guarantee the supply.In the manufacture process, inevitably can appear to uses the material to make some changes the situation. The experience indicated that, may use certain cheap materials to take the substitute. However, in the majority situation, in will carry on the production later to change the material to have in to start before the production to change the price which the material will spend to have to be higher than. Completes the choice of material work in the design stage, may avoid the most such situations. Started after the production manufacture to appear has been possible to supply the use the new material is replaces the material the most common reason. Certainly, these new materials possibly reduce the cost, the improvement product performance. But, must carry on the earnest appraisal to the new material, guarantees its all performance all to answer the purpose. Must remember that, the new material performance and the reliable very few pictures materials on hand such understood for the people. The majority of products expiration and the product accident caused by negligence case is because in selects the new material to take in front of substitution material, not truly understood their long-term operational performance causes.The product responsibility lawsuit forces designs the personnel and the company when the choice material, uses the best procedure. In the material process, five most common questions are: (a) did not understand or cannot use about the material application aspect most newly the best information paper; (b) has not been able to foresee and to consider the dusk year possible reasonable use (for example to have the possibility, designs the personnel also to be supposed further to forecast and the consideration because product application method not when creates consequence.In r ecent years many products responsibilities lawsuit case, because wrongly uses the plaintiff which the product receives the injury to accuse produces the factory, and wins the decision); (c) uses the material data not entire perhaps some data are indefinite, works as its long-term performance data is the like this time in particular; (d) the quality control method is not suitable and not after the confirmation; (e) the personnel which completely is not competent for the post by some chooses the material.Through to the above five questions analysis, may obtain these questions is does not have the sufficient reason existence the conclusion. May for avoid these questions to these questions research analyses the appearance indicating the direction. Although uses the best choice of material method not to be able to avoid having the product responsibility lawsuit, designs thepersonnel and the industry carries on the choice of material according to the suitable procedure, may greatly reduce the lawsuit the quantity.May see from the above discussion, the choice material people should to the material nature, the characteristic and the processing method have comprehensive and the basic understanding.机械设计理论机械设计是一门通过设计新产品或者改进老产品来满足人类需求的应用技术科学。

机械设计简介中英文翻译

机械设计简介中英文翻译Mechanical design is the application of science and technology to devise new or improved products for the purpose of satisfying human needs. It is a vast field of engineering technology which not only concerns itself with the original conception of the product in terms of its size, shape and construction details, but also considers the various factors involved in the manufacture, marketing and use of the product.People who perform the various functions of mechanical design are typically called designers, or design engineers. Mechanical design is basically a creative activity. However, in addition to being innovative, a design engineer must also have a solid background in the areas of mechanical drawing, kinematics, dynamics, materials engineering, strength of materials and manufacturing processes.As stated previously, the purpose of mechanical design is to produce a product which will serve a need for man. Inventions, discoveries and scientific knowledge by themselves do not necessarily benefit people; only if they are incorporated into a designed product will a benefit be derived. It should be recognized, therefore, that a human need must be identified before a particular product is designed.机械设计简介机械设计是为了满足人类需要而制定出的新产品或者改进旧产品时对科学与技术的应用。

机械设计外文文献翻译、中英文翻译

机械设计外文文献翻译、中英文翻译unavailable。

The first step in the design process is to define the problem and XXX are defined。

the designer can begin toXXX evaluated。

and the best one is XXX。

XXX.Mechanical DesignA XXX machines include engines。

turbines。

vehicles。

hoists。

printing presses。

washing machines。

and XXX and methods of design that apply to XXXXXX。

cams。

valves。

vessels。

and mixers.Design ProcessThe design process begins with a real need。

Existing apparatus may require XXX。

efficiency。

weight。

speed。

or cost。

while new apparatus may be XXX。

To start。

the designer must define the problem and XXX。

ideas and concepts are generated。

evaluated。

and refined until the best one is XXX。

XXX.XXX。

assembly。

XXX.During the preliminary design stage。

it is important to allow design XXX if some ideas may seem impractical。

they can be corrected early on in the design process。

机械设计外文翻译英文原文1

Study on cascaded whole-leaf spring oscillation mechanism for mould in continuous castingL.-P.Zhang*1,X.-K.Li2,Y.-F.Yao2and L.-D.Yang3A design method of a cascaded whole-leaf spring mechanism is proposed,which is a new oscillation guidance device for the mould in continuous casting.Then its prototype designed in this paper is produced in the lab,of which kinematics and dynamics simulations are carried out based on the rigid–flexible coupling virtual model.Simulation curves of the displacement and velocity of the mould are almost consistent with the ideal ones,which verifies the model built in this paper is rational.Furthermore,natural frequencies and mode shapes of the mechanism are calculated by dynamics simulation,and forces applied on leaf springs and revolute joints are analysed and effects of the basic parameters on these forces are also studied,which establish the basis for further studies and next application of this mechanism.Keywords:Continuous casting,Mould,Cascaded whole-leaf spring oscillation mechanism,Design method,Dynamics analysisIntroductionThe oscillation system for the mould is the key equipment to the modern continuous casting technol-ogy,of which the technical performance and reliability directly affect the quality and production of continuous casting slabs.The oscillation system is composed of the oscillation generating device and guiding mechanism, and the latter is studied in this paper.During continuous casting,the oscillation guiding mechanism plays a guidance role in the motion of the mould.Only when the mould vibrates along the correct track,the quality of the strand can be ensured.So the strand requires very high guidance accuracy of the oscillation guiding mechanism for the mould.But for inevitable gap and wear of the bearings,the four-eccentric axes and four-bar linkage oscillation mechanisms widely used in modern casting will cause uncontrolled deviation in motions of the mould,which badly affects the quality of the strand.1Therefore,the semi-and whole-leaf spring mechanisms are gradually used as guidance mechanisms for the mould in billet and slab continuous casting.2,3In recent years,with further development of the semi-and whole-leaf spring oscilla-tion mechanisms,the cascaded whole-leaf spring oscilla-tion mechanism is developed abroad,4which has a longer life,higher lateral rigidity and reliability and so on.However,until now,reports on this oscillation mechanism are few.5,6Its working principle has been proposed by the authors,7based on which design method of the cascaded whole-leaf spring oscillation mechanism is proposed in this paper and its experi-mental prototype is manufactured.Furthermore,the rigid–ﬂexible coupling virtual model of the cascaded whole-leaf spring oscillation mechanism is built and its kinematics and dynamics simulations are analysed using many types of software,such as ANSYS.System modes and the forces applied on leaf springs and revolute joints of the mechanism are analysed,which establish the basis for further studies and application of this mechanism.Working principle of cascaded whole-leaf spring guidance mechanismThe structure of the cascaded whole-leaf spring oscilla-tion mechanism is shown in Fig.1.It mainly consists of the cascaded leaf spring,vibration table and frame, which can be driven by machinery(Fig.1a),or hydraulics servo(Fig.1b),generating device of sinusoi-dal or non-sinusoidal oscillation.And the cascaded leaf spring is composed of four steel plate springs divided into two sets.All leaf springs’extension lines join to the circular arc centre of the continuous caster and their ends are separately connected to the vibration table and the frame,as shown in Fig.2,and then two sets of leaf springs,the vibration table and the frame form two four-bar linkage guidance devices.During the mould vibrat-ing,ﬂexible leaf springs produce elastic deformations, which make two leaf spring four-bar linkage guidance devices alternately play a guidance role in the mould without any interference by the generating device.71The Mechatronics and Information Engineering School,Foshan University,Foshan528000,China2College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China3No.2Research Development Department,Xi’an Heavy Machinery Research Institute,Xi’an710032,China*Corresponding author,email zhanglpok@204ß2010Institute of Materials,Minerals and MiningPublished by Maney on behalf of the InstituteReceived14November2008;accepted16September2009DOI10.1179/030192309X12573371383677Ironmaking and Steelmaking2010VOL37NO3Design of cascaded whole-leaf spring oscillation mechanismFrom working principle of the cascaded whole-leaf spring oscillation mechanism,it can be seen that two leaf spring four-bar linkages carry on the guidance to the mould.If design is unreasonable,the motion of the two leaf spring four-bar linkages will interfere during vibration,which will block the mould.Therefore,how to design these two leaf spring four-bar linkages becomes the key problem.Design method of cascaded whole-leaf spring oscillation mechanismAccording to the characters of the cascaded whole-leaf spring mechanism developed from the short-arm four-bar linkage,its design method is proposed as following:(i)based on the design principles of the short-armfour-bar linkage simulating arc,8design two rigid four-bar linkages under the same basic para-meters of the mould by optimum design,which fulfil the requirement for guiding accuracy of the mould simulating arc(ii)for settling interference of the two four-barlinkages,rigid linkages optimised in step (i)are substituted by steel plate springs with elastic deformation and then form two leaf spring four-bar linkages(iii)based on the basic principles of the short-armfour-bar linkage,arrange two leaf spring four-bar linkages according to Fig.2.That is,end-points A 1,C 1and A 2,C 2are fixed on the frame;endpoints B 1,D 1and B 2,D 2are connected to the vibration table of the mould.In this way,two leaf spring four-bar linkages are cascaded,so a cascaded whole-leaf spring mechanism is designed.Calculation exampleCalculations of parameters and guidance accuracy of rigid four-bar linkagesAccording to the geometry relations and the movement relationships of the four-bar linkage guidance devices of the arc caster (see Fig.2),the position of any point on the mould can be calculated during the mould vibration.In this paper,taken the bottom point E on the outer arc of the mould as an example,formulas of the track and the guiding accuracy of point E are deduced,as listed in Table 1,with only one rigid four-bar linkage guiding for the mould.To calculate conveniently,it is assumed that l 1,l 2,l 3and l 4are respectively the lengths of linkages of A 1C 1,A 1B 1,B 1D 1and C 1D 1,and A 2C 2,A 2B 2,B 2D 2and C 2D 2;S is the amplitude of the mould;D Q is the swing angle of the linkage of B 1D 1and B 2D 2under the max displace-ment of the mould downward;R is the caster’s basic radius;R 1and R 2are radius respectively from the arc centre to two endpoints of linkages A 1C 1,B 1D 1,A 2C 2and B 2D 2;H 1and H 2are the heights of both sides to the horizontal centerline of the mould;a is the included angle between OE and the horizontal centreline of the arc caster when the mould is at equilibrium position;h 1,h 2,r 1and r 2are respectively the included angles between linkages of A 1C 1,A 2C 2,B 1D 1,B 2D 2and the horizontal centreline of the caster;D R E is the simulated arc error of the mould.Mathematical model and optimisation of linkagesOscillation parameters of the mould and the installation positions of linkages are the primary designing terms of the guidance mechanism.Taking arc caster for example,outside penalty function optimisation method is adopted in optimum design of the two rigid four-bar linkages.In four-bar linkages design,it is the goal that the trajectory error of the mould meets the requirement for guiding accuracy.So the objective function of the optimisation mathematical model can be written by f(x )~D R E ~OE ’{R ¡0:02(1)According to Table 1,it can be seen that the design optimisation variables are x ~R ,S ,h ,r ,R 1,R 2½ T(2)By experience,geometric dimensions and installation positions of two four-bar linkages must meet the followingconstraints2Layout of cascaded whole-leafspringa mechanic driven;b hydraulics servodriven1Cascaded whole-leaf spring oscillation mechanismZhang et al.Cascaded whole-leaf spring oscillation mechanism for mould in continuous castingIronmaking and Steelmaking 2010VOL37NO320530D ¡R ¡50D 2¡S j j ¡10R 1w 0,h w 0R 2w R 1,r w h 0:91R ¡R 2v R 0:82R ¡R 1¡0:91R(3)where D is the thickness of billet;h and r are included angles between linkages and horizontal centreline of the caster.Based on the objective function (equation (1)),optimisation variables (equation (2))and constraints established in equation (3),optimisation procedure of outside penalty function is compiled by C language and two four-bar linkages are separately optimum designed.Optimisation resultsIn optimisation,it is assumed that the mould is arranged symmetrically about its equilibrium position and its height H 1z H 25900mm;the thickness of the billet D 5150mm;the guiding accuracies of two rigid four-bar linkages D R E 50?02mm.Therefore,the geometrical parameters and the guiding accuracies of the two rigid four-bar linkages are optimum designed (Table 2).By the optimised results,rigid linkages are substituted by leaf springs arranged according to Fig.2;then a cascaded whole-leaf spring mechanism is designed.Experimental prototype of cascaded whole-leaf spring oscillation mechanismBased on the optimised results,the experimental proto-type of the cascaded whole-leaf spring oscillation mechan-ism for the mould is manufactured,as shown in Fig.3,in which leaf spring four-bar linkage A 1C 1B 1D 1is composed of leaf springs 1and 4;and leaf spring four-bar linkage A 2C 2B 2D 2is made up of leaf springs 2and 3.Leaf spring four-bar linkages A 1C 1B 1D 1and A 2C 2B 2D 2are located at both sides of the mould in the vertical direction of casting.And parameters of the prototype are rounded numbers of Table 2and guidance accuracy is calculated after round-ing,as listed in Table 3.Flexible multibody theoryVectors of location,velocity and acceleration of point on flexible bodyBased on the small deformation theory,complicated motion of the ﬂexible body can be decomposed to severalTable 2Optimised results of two rigid four-bar linkagesFour-bar linkage A 1B 1C 1D 1Four-bar linkage A 2B 2C 2D 2R ,mm 5974.695902.74S,mm ¡3.33¡3.19h ,rad 0.050.08r ,rad 0.170.14R 1,mm 5219.795233.23R 2,mm 5490.995505.41D R ,mm20.020.0193Experimental prototypeTable 1Formulas of parameters of two rigid four-bar linkages and error of bottom point E on mould Four-bar linkage A 1B 1C 1D 1Four-bar linkage A 2B 2C 2D 2l 15l 35R 22R 1l 15l 35R 22R 1a 5arcsin(H 2/R )a 5arcsin(H 2/R )D Q 52arcsin(S /2l 1cos r 1)D Q 52arcsin(S /2l 1cos r 1)l 252R 1sin[(r 12h 1)/2]l 252R 1sin[(r 12h 1)/2]l 452R 1sin[(r 12h 1)/2]l 452R 1sin[(r 22h 2)/2]D 1E ~½R 22z R 2{2R 2R cos (r 1{a ) 1=2D 2E ~½R 21z R 2{2R 1R cos (r 2{a ) 1=2C 1E ~½R 22z R 2{2R 2R cos (h 1{a ) 1=2C 2E ~½R 21z R 2{2R 1R cos (h 2{a ) 1=2A 1D 1’~f l 21z l 22z 2l 1l 2sin ½(r 1{h 1)=2z D Q g 1=2A 2D 2’~f l 21z l 22{2l 1l 2sin ½(r 2{h 2)=2{D Q g 1=2c ~arccos ½(l 24z D 1E 2{C 1E 2) (2l 4:D 1E )c ~arccos ½(l 24z D 2E 2{C 2E 2) (2l 4:D 2E )v ~arccos ½(l 24z AD 1’2{l 23).(2l 4:AD 1’) v ~arccos ½(l 24z AD 2’2{l 23).(2l 4:AD 2’)b ~arccos ½(l 21z AD 1’2{l 22).(2l 1:AD 1’)b ~arccos ½(l 21z AD 2’2{l 22).(2l 1:AD 2’)OD 1’~½R 21z l 21z 2R 1l 1cos D Q 1=2OD 2’~½R 22z l 21{2R 2l 1cos D Q 1=2w ~arccos ½(OD 1’2z l 21{R 21).(2OD 1’:l 1)w ~arccos ½(OD 2’2z l 21{R 22).(2OD 2’:l 1)d 5w z c z v z bd 5w z c 2(v z b )OE ’~½D 1E 2z OD 1’2{2D 1E :OD 1’:cos d 1=2OE ’~½D 2E 2z OD ’22{2D 2E :OD 2’:cos d 1=2D R E 5OE 92R D R E 5OE 92RTable 3Parameters of prototypeLeaf spring four-bar linkage A 1B 1C 1D 1Leaf spring four-bar linkage A 2B 2C 2D 2R ,mm 6000.006000.00S ,mm ¡3.00¡3.00h ,u 3.005.00r ,u 10.008.00R 1,mm 5220.005235.00R 2,mm 5490.005505.00D R ,mm20.0160.018Zhang et al.Cascaded whole-leaf spring oscillation mechanism for mould in continuous casting206Ironmaking and Steelmaking 2010VOL37NO3simple motions.So the location vector of any point on the ﬂexible body can be expressed as equation (4).9r p ~r 0z A (s P z u P )(4)where A is the matrix of direction cosine;r P is the vector of point P in the inertial coordinate system;r 0is the vector of the origin of moving coordinate in the inertial coordinate system;s P is the vector of point P in moving coordinate system when the ﬂexible body is undeformed;and u P is the relative deﬂection of point P expressed by modal coordinates namely u P 5W P q (where W P is the assumed modal matrix and q is the generalised coordinate of deformation).Differentiating equation (4)with respect to time,vectors of velocity and acceleration are calculated:r p ~:r 0z :A (s P z u P )z A W P :q::r p ~::r 0z ::A (s P z u P )z 2:A W P :q z A W P ::q(5)Flexible multibody dynamic equationConsidering the location,direction and mode of point P on the ﬂexible body,the generalised coordinate is selected,as in equation (6).j ~x y z y h w q i (i ~1,:::,M )½ T ~r y q ½ T(6)The motion equation of ﬂexible body is deduced from d L L: {L L z l L y T {Q ~0y ~08><>:(7)where y is restraint equation;l is Lagrange multiplier corresponding to restraint equation;Q is generalised force projected to generalised coordinate j ;L is Lagrange item with L 5T 2W ,and T and W respectively denote kinetic energy and potential energy.The kinetic energy of ﬂexible body is calculated by T ~12:j T M (j ):j(8)where M (j )is mass matrix and M (j )~M tt M tr M tm M T tr M rrM rm M T tm M Trm M mm2435;subscripts t ,r and m respectively denote translation,revolution and modal freedom.The potential energy of ﬂexible body includes the gravitational potential energy and the elastic potential energy,that isW ~W g (j )z 12j T K j(9)where K is generalised stiffness matrix corresponding to modal coordinates and is a constant.Because the mass of the ﬂexible leaf springs is very small comparing to other parts of the oscillation mechanism with cascaded whole-leaf spring,its potential energy could be ignored.So substituting equations (8)and (9)into equation (7),differential equation of motion of the ﬂexible body is written as follows M ::j z :M :j {12L M L j :j T :j z K j z l L y L jjT~Q (10)Kinematics simulation of cascadedwhole-leaf spring oscillation mechanismBased on the ﬂexible multibody theory,the virtual design and then kinematics simulation of the experi-mental prototype of the cascaded whole-leaf spring oscillation mechanism for the mould with non-sinusoi-dal oscillation are carried out using many types of softwares,such as ANSYS,10,11and curves of displace-ment and velocity of the mould are obtained and compared with the ideal ones.Simulation modelBased on the structural characteristic of the cascaded whole-leaf spring oscillation mechanism,it is assumed as follows:(i)the vibration table is symmetric about x –y planeand direction of –y is the casting direction,with the coordinate as shown in Fig.4(ii)leaf springs with elastic deformation are regardedas flexible bodies.Eccentric shaft,connecting rod,vibration table and frame with big stiffness are taken for rigid bodies.So the simulation model of the experimental prototype is built,in which leaf springs 1and 4are composed of two groups of leaf spring four-bar linkage A 1C 1B 1D 1;and leaf springs 2and 3are formed by two groups of leaf spring four-bar linkage A 2C 2B 2D 2(Fig.4).Kinematics simulation and resultsTo simulate the actual non-sinusoidal motion law of themould with the guidance of the cascaded whole-leaf spring mechanism,a non-uniform rotational speed is imposed on the eccentric shaft,as shown in Fig.4,in which the frequency f 52Hz,the deﬂection ratio of oscillation a 530%and the amplitude of the mould h 53mm.The displacement and velocity curves of the vibration table (i.e.movement curves of the mould)are shown in Fig.5,of which the errors compared with the ideal curves are shown in Fig.6.From Fig.5,it can be seen the virtual vibration table can move along the given non-sinusoidal rule.Although the oscillation waveform of the mould in simulation has error compared with the ideal curves (Fig.6),the maximum errors of the displacement and the velocity are very small (0?0068mm and 0?1287mm s 21respec-tively),and can be ignored.Therefore,it is concluded that the virtual model is rational and can be usedfor4Simulating modelZhang et al.Cascaded whole-leaf spring oscillation mechanism for mould in continuous castingIronmaking and Steelmaking 2010VOL37NO3207further study on the cascaded whole-leaf spring mechanism.Dynamics simulation of oscillation mechanismBased on the dynamic simulation of the cascaded whole-leaf spring oscillation mechanism,system modal and the forces applied on leaf springs and revolute joints are analysed.Modal analysis of oscillation mechanismUsing the instantaneous freezing method of mechan-ism,12modal analysis of the cascaded whole-leaf springguidance mechanism is carried out,from which system modals and natural frequencies are obtained.For the frequency of non-sinusoidal oscillation in continuous casting is not very high,13natural frequencies and mode shapes from the ﬁrst to the ﬁfth are emphasised in this paper with related information of the modals listed in Table 4.Limited by space,only the ﬁrst to the third mode shapes are shown in Fig.7.From modal analysis of the mechanism above,it is known that the ﬁrst and the second natural frequencies are lower and resonance may occur on the mould in continuous casting.14When resonance occurs,the mould will deﬂect from the correct trajectory,which badly impacts on the quality of strand.So it must be ensured that the working frequency in continuous casting is far from the ﬁrst and the second natural frequencies of the cascaded whole-leaf spring oscillation mechanism.Analysis of forces applied on leaf springsOwing to the symmetry about the x –y plane,leaf springs in both sides of the cascade whole-leaf spring oscillation mechanism have the same forces and deformations,only the one at the positive axis of z is analysed.For the cascade whole-leaf spring mechanism,leaf spring four-bar linkage A 1C 1B 1D 1and A 2C 2B 2D 2alternately play the guidance role on the mould and forces applied on the leaf spring and their deformations are very complicated.So it is difﬁcult to analyse leaf springs well only by experiments and computer simulation has important signiﬁcance.In this paper,based on the virtual proto-type technology,dynamics simulation is carried out,by which forces curves of leaf springs are obtained during the mould movement.Furthermore,effects of basic oscillation parameters on these forces are analysed,which establish the basis for further study on the reliability of themechanism.5a displacement and b velocity curves of vibrationtableTable 4Natural frequencies and modes shapes from ﬁrst to ﬁfth order Modality order Natural frequency,Hz Mode shapes172058Vertical vibration of the vibration table along the casting direction (–y )211.4723Deviated swing of the vibration table about the axis of x 323.7038Vibration of leaf spring 1423.7068524.0872Transverse vibration of the vibration table along the z axis z vibration of leaf spring17a ﬁrst and b second modal mode shapes of systemZhang et al.Cascaded whole-leaf spring oscillation mechanism for mould in continuous casting208Ironmaking and Steelmaking 2010VOL37NO3Forces applied on leaf springs at different amplitudesTo understand the forces applied on leaf springs under different amplitudes,the motion of the mould with different lengths of the eccentric shaft respectively h 53mm and h 52mm (that is the amplitudes of the mould)are taken for example to simulate in which the deﬂection ratio of oscillation and the frequency are the same to those in the section on ‘Kinematics simulation and results’.Forces applied along the length direction of leaf springs,for example,are analysed in this paper.Based on the dynamic simulations,forces applied on the ends of leaf springs 1,4and 2,3in a period are obtained as shown in Fig.8.It can be seen that the forces applied on the ends of leaf springs 1and 4are similar and vary at non-sinusoidal rules.When the mould works above its equilibrium position at the ﬁrst half-period,two leaf springs are compressed on the action of negative forces;when the mould moves under side of its equilibrium position at the second half-period,these two leaf springs are tensioned with positive forces.Furthermore,the values of forces are directly proportional to the distance of the mould departing from its equilibrium position.When the mould moves to its max.displacement,both leaf springs will bear the largest forces.And forces applied on the leaf springs get bigger as the amplitude of mould increases.Forces applied on leaf springs 2and 3vary with the same law,yet opposite to those of leafsprings 1and 4.When the mould is above its equilibrium position at the ﬁrst half-period,leaf springs 2and 3bear tensile forces;however,at the other half-period,both leaf springs bear pressure.Similarly the values of forces are proportional to the distance of the mould off its equilibrium position and the forces get bigger as the amplitudes of the mould increase.Forces applied on leaf springs at different deflection ratio of oscillationWith the same frequency and amplitude in the section on ‘Kinematics simulation and results’,based on the dynamic simulations at different deﬂection ratios of oscillation a 1510%,a 2530%,a 3550%,force curves of each leaf spring are obtained,as shown in Fig.9.From Fig.9,it can be seen that with the same frequency and amplitude of oscillation,deﬂection ratios of the force curves of leaf springs become bigger as the deﬂection ratio of oscillation enlarges,but the amplitudes of forces applied on every leaf spring keep constant.At the same time there are forces applied in the normal direction of the length of leaf spring,which vary with the same rule to the forces along the length direction.In general,forces applied on leaf springs periodically vary with the same periodicity to the system’s during the mould vibration,the values of which are proportional to the distance of the mould departing from its equilibrium position and get bigger as the amplitude of the mould increases.Deﬂection ratiosofa leaf spring 1;b leaf spring 4;c leaf spring 2;d leaf spring 38Forces applied on leaf springs at differentamplitudesa leaf spring 1;b leaf spring 2;c leaf spring 3;d leaf spring 49Forces applied on leaf springs at different deﬂection ratioZhang et al.Cascaded whole-leaf spring oscillation mechanism for mould in continuous castingIronmaking and Steelmaking 2010VOL37NO3209the force curves of leaf springs become bigger with the deﬂection ratio of oscillation enlarging,but the ampli-tudes of forces of every leaf spring are invariant. Effect of basic oscillatory parameters on joint forcesThe basic oscillatory parameters are often adjusted to meet different technologies in continuous casting,which will affect the joint forces of kinematic pairs and then the dynamic characteristic of the mechanism.Therefore, joint forces are analysed of the cascade whole-leaf spring oscillation mechanism,which shows that amplitude and deﬂection ratio of oscillation affect joint forces with the similar law to forces applied on leaf springs.Joint forces get bigger as the amplitude of the mould increases and deﬂection ratios of joint force curves become bigger with increasing the deﬂection ratio of oscillation;however, the amplitudes of joint forces are constant.Based on analyses above,the cascaded whole-leaf oscillation mechanism can be properly designed for the mould in continuous casting according to practical conditions,which can make the mould vibrate along the correct track with better performance and higher reliability of production.Therefore,the theory basis for application is established.Conclusions1.A design method of the cascaded whole-leaf spring oscillation mechanism is proposed at first.Then a cascaded whole-leaf spring mechanism is designed using the method and its experimental prototype is produced.2.Rigid–flexible coupling full scale model of the prototype of the cascaded whole-leaf spring oscillation mechanism is established;furthermore,its kinematic and dynamic simulations are analysed and compared to those of ideal curves,the results of which verify that the virtual model is rational.3.Working frequency of the system in continuous casting must be kept away from its first and second natural frequencies to avoid resonance.4.The amplitudes of forces applied on leaf springs and revolute joints are only determined by the amplitude of the mould and enlarge with the amplitudes of the mould increasing;and as the deflection ratio of oscillation increases,the deflection of force curves becomes greater.OutlookSuch a system is now being planned for use in industry. References1.Y.G.Yan and X.J.Wang:‘Error analysis and comparison of twotypical mold oscillators’,Heavy Mach.,2006,3,46–48,54.2.in‘800problems of steel-making-continuous casting technology’,214–216;2004,Beijing,Metallurgical Industry Press.3.E.S.Szekeres:‘Overview of mold oscillation in continuouscasting’,Iron Steel Eng.,1996,7,29–37.4.F.Wimmer:‘High speed billet casting:theoretical investigationsand practical experience’,Proc.VAI CCC’96,Linz,Austria,May 1996,VAI,Paper1.TE:‘The cascaded whole-leaf springs oscillation device’,Chinese patent no.ZL02238393.x,February2003.6.R.Ko¨hl,K.Mo¨rwald,J.Po¨ppl and H.Tho¨ne:‘The DYNAFLEXoscillator–a technology breakthrough in billet casting’,Iron Steel, 2001,36,(8),22–25,29.7.L.P.Zhang,X.K.Li,Q.J.Zou and Y.F.Yao:‘Research of theseries whole-leaf spring oscillation mechanism’,Mach.Design Res.Suppl.,2008,24,79–81.8.Z.X.Lei and D.K.Xu:‘Optimum design and analysis of four-barlinkage oscillation mechanism of arc continuous caster’,J.Univ.Iron Steel Beijing,1982,3,80–89.9.Y.Lu:‘Dynamics of flexible multi-body system’,109–165;1996,Beijing,Advanced education Press.10.B.O.Al-Bedoor and A.A.Almusallam:‘Dynamics of flexible-jointmanipulator carrying a payload with rotary inertia’,Mech.Mach.Theory,2000,35,785–820.11.B.O.Al-Bedoor and Y. A.Khulief:‘Finite element dynamicmodeling of a translating and rotating flexible link’,Comput.Methods Appl.Mech.Eng.,1996,131,173–189.12.X.Tang and D.Jin:‘Dynamics of machinery’,169–170;1984,Beijing,Advanced education Press.13.X.K.Li and D.M.Zhang:‘Technology of the mold oscillation incontinuous casting’,20–25;2000,Beijing,Metallurgical Industry Press.14.R.Shao:‘Dynamics of mechanical system’,30–34;2005,Beijing,Mechanical Industry Press.Zhang et al.Cascaded whole-leaf spring oscillation mechanism for mould in continuous casting 210Ironmaking and Steelmaking2010VOL37NO3。

机械设计基础(英汉互译)

Fundamentals of Mechanical DesignMechanical design means the design of things and systems of things and systems of a mechanical nature-machines, products, structures, devices, and instruments. For the most part mechanical design utilizes mathematics, the materials sciences, and the engineering-mechanics sciences.The total design process is of interest to us. How does it begin? Does the engineer simply sit down at his desk with a blank sheet of paper? And, as he jots down some ideas, what happens next? What factors influence or control the decisions which have to be made? Finally, then, how does this design process end?Sometimes, but not always, design begins when an engineer recognizes a need and decides to do something about it. Recognition of the need phrasing it in so many words often constitute a highly creative act because the need may be only a vague discontent, a feeling of uneasiness, or a sensing that something is not right.The need is usually not evident at all. For example, the need to do something about a food-packaging machine may be indicated by the noise level, by the variation in package weight, and by slight but perceptible variations in the quality of the packaging or wrap.There is a distinct difference between the statement of the statement of the need and the identification of the problem which follows this statement. The problem is more specific. If the need is for cleaner air, the problem might be that of reducing the dust discharge from power-plant stacks, or reducing the quantity of irritants from automotive exhausts.Definition of the problem must include all the specifications for the thing that is to be designed. The specifications are the input and output quantities, the characteristics and dimensions of the space the thing must occupy and all the limitations on these quantities. We can regard the thing to be designed as something in a black box. In this case we must specify the inputs and outputs of the box together with their characteristics and limitations. The specifications define the cost, the number to be manufactured, the expected life, the range, the operating temperature, and the reliability.There are many implied specifications which result either from the designer’s particular environment or from the problem itself. The manufacturing processes which are available, together with the facilities of a certain plant, constitute restrictions on a designer’s freedom, and hence are a part of the implied specifications. A small plant, for instance, may not own cold-working machinery. Knowing this, the designer selects other metal-processing methods which can be performed in the plant. The labor skills available and the competitive situation also constitute implied specifications.After the problem has been defined and a set of written and implied specifications has been obtained, the next step in design is the synthesis of an optimum solution. Now synthesis cannot take place without both analysis and optimization because the system under design must be analysis and optimization because the system under design must be analyzed to determine whether the performance complies with the specifications.The design is an iterative process in which we proceed through several steps, evaluate the results, and then return to an earlier phase of the procedure. Thus we may synthesize several components of a system, analyze and optimize them, and return to syntheses to see what effect this has on the remaining parts of the system. Both analysis and optimization require that we construct or devise abstract models of the system which will admit some form of mathematical analysis. Wecall these models mathematical models. In creating them it is our hope that we can find one which will simulate the real physical system very well.Evaluation is a significant phase of the total design process. Evaluation is the final proof of a successful design, which usually involves the testing of a prototype in the laboratory. Here we wish to discover if the design really satisfies the need or needs. Is it reliable? will it compete successfully with similar products? Is it economical to manufacture and to use? Is it easily maintained and adjusted? Can a profit be made from its sale or use?Communicating the design to others is the final, vital step in the design process. Undoubtedly many great designs, inventions, and creative works have been lost to mankind simply because the originators were unable or unwilling to explain their accomplishments to others. Presentation is a selling job. The engineer, when presenting a new solution to administrative, management, or supervisory persons, is attempting to them that this solution is a better one. Unless this can be done successfully, the time and effort spent on obtaining the solution have been largely wasted.Basically, there are only three means of communication available to us. These are the written, the oral. And the graphical forms. Therefore the successful engineer will be technically competent and versatile in all three forms of communication. A technically competent person who lacks ability in any one of these forms is severely handicapped. If ability in all three forms is locking, no one will ever know how competent that person is!The competent engineer should not be afraid of the possibility of not succeeding in a presentation. In fact, occasional failure should be expected because failure or criticism seems to accompany every really creative idea. There is a great deal to be learned form a failure, and the greatest gains are obtained by those willing to risk defeat. In the final analysis, the real failure would lie in deciding not to make the presentation at all.机械设计基础机械设计是指机械装置和机械系统——机器、产品、结构、设备和仪器的设计。

机械设计大纲(双语版)要点

《机械设计》课程教学大纲《Mechanical design》Course syllabus制订人（Author）:涂杰（Tu Jie）总学时数（ total class time）：56（45min/time）理论教学时数(Theory Teaching time)：52 ；实验教学时数（experimental teaching time）:4；学分(credit)：4适用专业（suitable major）: NC Technology一．课程的性质和作用（The task of the course）本课程是机械类专业的一门必修的专业基础课。

通过本课程的学习，为学生在今后的工作中解决机械设计问题打下一定基础,同时也为学生学习后继课程和新的科学技术提供必需的预备知识。

The course is a required professional basic course for mechanical engineering majors,through the course can lay a good foundation for the students to solve the problems of mechanical design.it can also provide the necessary preliminaries for the the successor curriculum.二．课程的基本内容（Basic content of the course）第1章绪论Chapter 1 introduction（1）机械设计研究对象、内容及在国民经济发展中的作用。

（1）research object、contents of the mechanical design.（2）机械、机器、机构及构件的概念。

(2)the conception of Mechanics and mechanism .第2章机械设计概论Chapter 2 Introduction to mechanical design（1）机械设计的基本要求。

机械设计(英文版)全册配套完整教学课件

For the convenience of kinematic or dynamic analysis of a machine, a machine can be decomposed into mechanisms.
3) Classification of Machine Elements
Energy absorber: brakes 制动器and dampers减震器 Supporting elements: shafts, springs弹簧, seals密封 Connection and joints: thread fasteners螺纹紧固件,
keys键, couplings联轴器
2) Composition of Machine
In terms of basic manufacturing unit, a machine is composed by machine elements/components.
In terms of the functions of the sub-system of a machine, it is comprised of the source-power, transmission, execution and control/manipulation parts.
belt) 汽车发动机（多楔带）
Machine design is the fundamental practice in engineering; is the transformation of concepts and ideas into useful machinery.
Machine design is the application of science and technology to devise new or improved products for the purpose of satisfying human needs.

机械设计中英对照

Mechanical DesignAbstract:A machine is a combination of mechanisms and other components which transforms, transmits, or utilizes energy, force, or motion for a useful purpose. Examples are engines, turbines, vehicles, hoists, printing presses, washing machines, and movie cameras. Many of the principles and methods of design that apply to machines also apply to manufactured articles that are not true machines, from hub caps and filing cabinets to instruments and nuclear pressure vessels. The term "mechanical design" is used in a broader sense than "machine design" to include their design. For some apparatus, the thermal and fluid aspects that determine the requirements of heat, flow path, and volume are separately considered. However, the motion and structural aspects and the provisions for retention and enclosure are considerations in mechanical design. Applications occur in the field of mechanical engineering, and in other engineering fields as well, all of which require mechanical devices, such as switches, cams, valves, vessels, and mixers.Keywords: Mechanical Designmechanisms Design Process ToleranceDesign processThe design begins from real of or the demand of imagination.The existing instrument may need to take in to improve on the enduring, efficiency, weight, speed or the cost.May need new instrument to complete before function done by person, such as Assemble or maintain.The target is all or partly after making sure, design of the next move is to conceive outline the organization that can complete the function needed and it arranges for this, drawing grass diagram to be worth barehanded biggest, it isn't only one personal record of viewpoint with with others discussion of assistance means, and be suitable for to communicate with own viewpoint particularly, is the stimulant which creates sex way of thinking to still need extensive knowledge concerning parts, because a the set new machine usually from be familiar with of each kind of spare parts reschedule or substitute but become, changed size and material perhaps.Regardless at conceive outline process in still after, a design will carry on a fast or rough calculation or analyze to make sure regulation size and possibility.When some concerning need or can use amount of space of viewpoint assurance after, can start pro rata painting grass diagram.Finally, 1 completed according to the design of the function and the credibility, can make kind machine.If test satisfied, and if the device wants mass production, will to the first design carry on a certain modification to insure with lower cost ter on several years of make and use a period, design probably because of conceive outline new viewpoint perhaps according to test and experience foundation of further analytical the change shown but change.Sell attraction, customer's satisfaction and manufacturing costs to all have something to do with design, the success which designs ability and engineering investment is closelyrelated.Some design standardsAt this part, someone suggests the attitude of the usage creation carries on of analysis, this kind of analysis can cause a graveness improvement and to back up the product conceive outline with perfect, perhaps the product function is more, more economic and more enduring.Creating the stage's needing not is first with independent stage.Although analyze personnel the whole probably irresponsible design, he isn't only the right answer of[with] problem that can be from the numeral put forward wanting him to resolve only, not only only is give should dint value, the size works to limit perhaps.He can put forward more extensive views, for the purpose of improvement norm or project.Because in the analysis the front or the analysis the process, he will acquaint with to equip and its work condition, he is fully placed in a beneficial position which conceives outline to choose a project.Best he can put forward a suggestion change shape to Elimination moment of force or should dint concentration, not allow to set up to have to cut the organization that noodles and excessive dynamic state carry a lotus greatly best is he discards his meticulous of design but is not see a machine discard afterwards.For stiring up to create sex thinking, the suggestion designs a personnel and analytical the personnel use following standard.6 ex- standards are particularly applicable to an analysis personnel, although he may involve to all this 10. 1.Create the physical function that sex land utilization need when using combine the control don't need.2.Know practical carry lotus and its importance.3.Consider in advance there is no function carrying a lotus.4.Invent to add to carry a condition more beneficially.5.Provide minimum weight the most beneficial of distribute in response to the dint with rigid.e a basic and square distance calculation a comparison and make size superior to turn.7.Select by examinations material to acquire a function combination.8.At spare parts and integrated spare parts careful choice.9.Modify a function design with the orientation production line and decline low cost.10.Consider to make parts accurate to position in the assemble with with each other not interferenceMechanical DesignThe whole machine design is a complicated process.Designing the personnel have to at thus of realm, such as calm down mechanics, kinetics, dynamics and material mechanics have good cultivated manners, have to also acquaint with manufacturing material and make a craft in addition.Designing the personnel has to can combine all related facts, carrying on Teaches Wei and creating grass diagram and graphics to come to deliver the manufacturing request to the car.The square one that any product designs works it an is the material that the choice useds for making each parts.The design personnel of today can get an innumerable.While choosing, function, external appearance, material cost andmanufacturing costs of product are all very important.Had to be careful to evaluate the function of material before any calculation.It is necessary a careful calculation with the usefulness of insuring the pute to never appear on the diagram, but from ten various reason be saved.Once the whichever parts loses efficacy, will clear up to do what while designing this defective spare parts at the beginning;And, can acquire an experience document from compute past item.While needing the design for ising similar to, the past record will have a tremendous help.The check of computing(with diagram top size) is the most important.A decimal point's mislaying position can ruin an original and acceptable item.For example, if a person wants to design a bracket that can prop up 100 pounds, but it should can prop up 1000 pounds originally, the result affirmation will fail.The square aspect noodles had to check a check to design again a work.The calculator speaks to is an of great use tool for the staff member, can ease a dull calculation and provide to expand analysis to the existing data. Hand over system to make the calculator assistance design(CAD) with each other according to the calculator function and the calculator lend support to a manufacturing(CAM) to make possible.Pass thus of system, may conceive outline a first step to deliver to beat bore paper to take to used for numeral to process control but need not to draw formal construction diagram.The machine design for the laboratory test, model and kind machine is very helpful.The laboratory provided a lot of build up basic concept need of information, however, can also acquire with them some concerning product how on the spot would the understanding for working.Finally, a design personnel of success should offer the step that the utmost effort keeps up with ages.Will appear new material and produce a method everyday.If painting and design personnel's don't acquainting with modern method and material may put out action.A good design personnel should usually read technique periodical to keep up with a new developmentThe engineering work is badThe solid is made sure boundary by its surface boundary.Typical model ground, design a personnel to specify Mr. to call size to a spare parts to make it contented its demand.Actually because of the surface irregular and proper surface rough degree, each spare parts can't make into Mr. to call size's hasing to allow size to have some varieties can make with insuring repeatedly.But, the variety allowed can't certainly too big with as for make to assemble the function of the piece to become bad.Single the variety allowed by spare parts is called business trip.Business trip this technical term not only is applicable to from the acceptable scope of the parts size of[with] manufacturing craft creation, but also is applicable to a machine or processes of exportation.For example, a give already set number of thepower each pedestals of I.C. engine have variety.Actually, we usually discover this kind of variety model will be a frequency to distribute curve, for example t.The distributes.(call the Gauss distribute again)One of the work which designs a personnel is the variety which specifies size for a spare parts and allows, thisvalue canproduce acceptable function.Spare parts business tripWhen there is no appointed accurate size in the diagram, most organizations all have in general use business trip of being applicable to the size.For process size, in gene ral use business trip's maying be a ± is 0.5 millimeters.Therefore being specified to 15.0 millimeter scopes of sizes can be of 14.5-15.5 millimeters.Other in general use business trips can be applicable to such as the angle and drill a hole with blunt bore, The casting, the forging, the welded joint and weld the angle）etc. situation.Can make reference to the diagram of past or general engineering to practice while giving the appointed business trip of a spare parts.The business trip of typical model's ising specified is martial become JSO standard define of range.Give to settle business trip to 1, for example H7/s 6, can use for being studying of spare parts size having 1 set and chart to shoulding of number.Underneath this will give concerning pack into inside bore of the concrete example with the stalk or the pillar form match.The standard match of bore and stalkA standard of the engineering work is the business trip which makes sure a pillar form spare parts, installing for example in a tube form spare parts or bore for corresponding of.perhaps is the stalk which revolves in its inner part to match with of loose be decided by application tightly for example, a wheel gear which positions on the stalk needs to be"tight" of quiet match, here stalk of the diameter compares wheel gear actually of inside path a little bit a little bit big in order to can deliver need of Torque .Furthermore, the diameter of glide bearings has to be big in the diameter of the stalk to make it revolve.On the supposition that speak to can't become the accurate size to the parts manufacturing from the economy, all of the variety of stalk and bore size have to make sure.But, variety of scope shouldn't the too big in order to prevent assemble hour damagedFor being unlikely to there is everlasting drive appointed business trip size endlessly, have already drawn up national and international standard to make sure business trip to take, for example hll/cll.For using this data, gave the definition in the traditional business trip ually what to use is the Basic hole system, because this meeting makes company internal auger needed, wring knife and pull knife and calculate the decrease of tool category.Size:Mean the number of the size numerical value by appropriation unit. Actual size:The parts size got through a diagraphSize extreme limit:The spare parts allows of biggest with most baby size.The biggest size extreme limit:Bigger in two size extreme limitsMost baby size extreme limit:Smaller in two size extreme limits ofBasic size:Fix the reference size of size extreme limit in order toDeviation:A size with it to should of the algebra of basic size badActual deviation:Actual size with it to should of the algebra of basic size bad. Last deviation:The biggest size extreme limit with it to should of the algebra of basic size badDescend deviation:Most baby size extreme limit with it to should of the algebra of basic size badBusiness trip:The biggest size extreme limit with most the bad value of baby size extreme limit.Stalk:Specifying an exterior characteristics with all parts consistently uses technical termBore:Specify a parts all internal characteristics to consistently use technical term.The initial design creation satisfies appointed demanding solution.The initial design can represent all sub- systems of constituting the whole system with the total of zero partses.Ion and Smith describe an initial design for is become by a series and evaluate a stage to constitute of an iterative process, each stage matches together to become a good solution.At each iterative stage conceive outline more in detail, can more overall valuation.Produce possibly many of or the economy is convenient of conceive outline and the viewpoint is important.There is 1 kind to lure, let you accept the first hopeful conceive outline and carry on a detailed design until end product.Should resist this kind of come-on, because of so as a result the head quarter is more quite a few.Well worth mentioning BE, or early or late your design would have to with those designs competitions which come from other manufactories, so the creation develop of the thoughts should be careful.Is to them to carry on valuation to combine choice next move after producing viewpoint and conceiving outline the best conceive outline.a kind of valuation method is to use row watch matrix.The matrix constitutes to°from a series of standard. conceive outline have to ask for help them to beat a cent.If suitable, the importance of the standard can add power, conceiving outline most in keeping withly will have a tallest total cent.This method provided a built-up valuation technique. and make personal viewpoint that can hardly promote their own absurdity in the team.Produced the solution of first step, the next move was to express them, in order to they ability and all involve total design process of the persons communicate actually, this one step can adopt forms of drawing the grass diagram or 3D models, since but physical model also but the calculator born model. Of the total plan has been completed and calculated to determine solutions for product design compatibi- Lity, details of the design phase had been created.机械设计摘要机器是机构与其他零件的组合，为了有益的用途而转换、传递或利用能量、力或者运动实例有发动机、涡轮、车辆、卷扬机、印刷机、洗衣机和电影摄影机.许多适用于机器设计的原理和力法也适用于不是真正机器的制成品，从轮毂盖和档案橱柜到仪表和核压力容器。

机械设计本科双语教学课程理论力学教案

机械设计本科双语教学课程理论力学教案一、课程介绍1.1 课程名称：理论力学1.2 课程性质：机械设计本科专业课程1.3 课程目标：通过本课程的学习，使学生掌握理论力学的基本概念、基本理论和基本方法，能够运用理论力学的基本原理分析和解决机械工程中的实际问题。

二、教学内容2.1 牛顿运动定律2.1.1 牛顿第一定律2.1.2 牛顿第二定律2.1.3 牛顿第三定律2.2 动量定理和动量守恒定律2.2.1 动量定理2.2.2 动量守恒定律2.3 能量守恒定律与功能原理2.3.1 动能定理2.3.2 重力势能2.3.3 弹性势能2.3.4 功能原理三、教学方法3.1 授课方式：采用双语教学方式，中文讲解与英文教材相结合。

3.2 教学手段：利用多媒体课件辅助教学，结合实际案例进行分析。

3.3 互动环节：设置问答环节，鼓励学生提问和发表见解，提高课堂互动性。

四、教学评价4.1 平时成绩：根据学生课堂表现、提问和作业完成情况进行评定。

4.2 考试成绩：通过期末考试对学生掌握课程知识情况进行评定。

五、教学计划5.1 课时安排：共计32课时，每课时45分钟。

5.2 授课进度安排：第1-4课时：牛顿运动定律第5-8课时：动量定理和动量守恒定律第9-12课时：能量守恒定律与功能原理六、教学活动6.1 课堂讲解针对每个章节的核心知识点进行详细讲解，确保学生理解并掌握。

使用多媒体课件展示原理图、实例动画等，增强视觉效果，帮助学生直观理解。

6.2 案例分析选取与机械设计相关的实际案例，让学生应用所学的理论力学知识进行分析。

鼓励学生积极参与，提出自己的见解，培养解决问题的能力。

6.3 小组讨论将学生分成小组，针对特定问题进行讨论，促进学生之间的交流与合作。

每个小组需提交讨论报告，并在课堂上进行简要汇报。

七、作业与练习7.1 课后作业布置与课堂内容相关的作业，巩固学生对知识点的掌握。

定期检查和批改作业，及时了解学生的学习情况，并给予反馈。

机械设计课程教材的中英文对照版本

机械设计Mechanical Designing机械设计基础Basis of Mechanical Designing机械设计课程设计Course Exercise in Mechanical Design机械设计原理Principle of Mechanical Designing机械式信息传输机构Mechanical Information Transmission Device机械原理Principle of Mechanics机械原理和机械零件Mechanism & Machinery机械原理及机械设计Mechanical Designing机械原理及应用Mechanical Principle & Mechanical Applications机械原理课程设计Course Exercise of Mechanical Principle机械原理与机械零件Mechanical Principle and Mechanical Elements机械原理与机械设计Mechanical Principle and Mechanical Design机械噪声控制Control of Mechanical Noise机械制造概论Introduction to Mechanical Manufacture机械制造工艺学Technology of Mechanical Manufacture机械制造基础Fundamental of Mechanical Manufacture机械制造基础(金属工艺学) Fundamental Course of Mechanic Manufacturing (Meta机械制造系统自动化Automation of Mechanical Manufacture System机械制造中计算机控制Computer Control in Mechanical Manufacture机械制图Mechanical Drawing可编程序控制技术Controlling Technique for Programming金工实习Metal Working Practice毕业实习Graduation Practice理论力学Theoretical Mechanics材料力学Material Mechanics数字电子电路Fundamental Digital Circuit机械控制工程Mechanical Control Engineering可靠性工程Reliability Engineering机械工程测试技术Measurement Techniques of Mechanic Engineering计算机控制系统Computer Control System机器人技术基础Fundamentals of Robot Techniques最优化技术Techniques of Optimum工程测试与信号处理Engineering Testing & Signal Processing金属工艺及设计Metal Technics & Design机械工业企业管理Mechanic Industrial Enterprise Management机械零件课程设计Course Design of Machinery Elements投资经济学Investment Economics现代企业管理Modern Enterprise Administration市场营销学Market Selling生产实习Production Practice课程设计Course Exercise有限元法FInite Element金工实习Metalworking Practice液压传动Hydraulic Transmission微机原理及接口技术Principle & Interface Technique of Micro-computer 微机原理及接口技术Principle & Interface Technique of Micro-computer数控技术Digit Control Technique活塞膨胀机Piston Expander活塞式制冷压缩机Piston Refrigerant Compreessor活塞式压缩机Piston Compressor活塞式压缩机基础设计Basic Design of Piston Compressor活塞压缩机结构强度Structural Intensity of Piston Compressor活赛压机气流脉动Gas Pulsation of Piston Pressor货币银行学Currency Banking基本电路理论Basis Theory of Circuit基础写作Fundamental Course of Composition机床电路Machine Tool Circuit机床电器Machine Tool Electric Appliance机床电气控制Electrical Control of Machinery Tools机床动力学Machine Tool Dynamics机床设计Machine Tool design机床数字控制Digital Control of Machine Tool机床液压传动Machinery Tool Hydraulic Transmission机电传动Mechanical & Electrical Transmission机电传动控制Mechanical & electrical Transmission Control机电耦合系统Mechanical & Electrical Combination System机电系统计算机仿真Computer Simulation of Mechanic/Electrical Systems机电一体化Mechanical & Electrical Integration机构学Structuring机器人Robot机器人控制技术Robot Control Technology机械产品学Mechanic Products机械产品造型设计Shape Design of Mechanical Products机械工程控制基础Basic Mechanic Engineering Control机械加工自动化Automation in Mechanical Working机械可靠性Mechanical Reliability机械零件Mechanical Elements机械零件设计Course Exercise in Machinery Elements Design机械零件设计基础Basis of Machinery Elements Design互换性与技术测量Elementary Technology of Exchangeability Measurement焊接方法Welding Method焊接方法及设备Welding Method & Equipment焊接检验Welding Testing焊接结构Welding Structure焊接金相Welding Fractography焊接金相分析Welding Fractography Analysis焊接冶金Welding Metallurgy焊接原理Fundamentals of Welding焊接原理及工艺Fundamentals of Welding & Technology焊接自动化Automation of Welding工程材料的力学性能测试Mechanic Testing of Engineering Materials 工程材料及热处理Engineering Material and Heat Treatment工程材料学Engineering Materials工程测量Engineering Surveying工程测试技术Engineering Testing Technique工程测试实验Experiment on Engineering Testing工程测试信息Information of Engineering Testing工程动力学Engineering Dynamics工程概论Introduction to Engineering工程概预算Project Budget工程经济学Engineering Economics工程静力学Engineering Statics工程力学Engineering Mechanics工程热力学Engineering Thermodynamics工程项目评估Engineering Project Evaluation工程优化方法Engineering Optimizational Method工程运动学Engineering Kinematics工程造价管理Engineering Cost Management工程制图Graphing of Engineering电机学Electrical Motor 电机学及控制电机Electrical Machinery Control & Technology。

机械设计制造及其自动化毕业论文中英文资料外文翻译

机械设计创造及其自动化毕业论文外文文献翻译INTEGRATION OF MACHINERY译文题目专业机械设计创造及其自动化外文资料翻译INTEGRATION OF MACHINERY（From ELECTRICAL AND MACHINERY INDUSTRY）ABSTRACTMachinery was the modern science and technology development inevitable result, this article has summarized the integration of machinery technology basic outline and the development background .Summarized the domestic and foreign integration of machinery technology present situation, has analyzed the integration of machinery technology trend of development.Key word： integration of machinery ，technology， present situation ，product t，echnique of manufacture ，trend of development0. Introduction modern science and technology unceasing development, impelled different discipline intersecting enormously with the seepage, has caused the project domain technological revolution and the transformation .In mechanical engineering domain, because the microelectronic technology and the computer technology rapid development and forms to the mechanical industry seepage the integration of machinery, caused the mechanical industry the technical structure, the product organization, the function and the constitution, the production method and the management systemof by machinery for the characteristic integration ofdevelopment phase.1. Integration of machinery outline integration of machinery is refers in the organization new owner function, the power function, in the information processing function and the control function introduces the electronic technology, unifies the system the mechanism and the computerization design and the software which constitutes always to call. The integration of machinery development also has become one to have until now own system new discipline, not only develops along with the science and technology, but also entrusts with the new content .But its basic characteristic may summarize is: The integration of machinery is embarks from the system viewpoint, synthesis community technologies and so on utilization mechanical technology, microelectronic technology, automatic control technology, computer technology, information technology, sensing observation and control technology, electric power electronic technology, connection technology, information conversion technology as well as software programming technology, according to the system function goal and the optimized organization goal, reasonable disposition and the layout various functions unit, in multi-purpose, high grade, redundant reliable, in the low energy consumption significance realize the specific function value, and causes the overall system optimization the systems engineering technology .From this produces functional system, then becomes an integration of machinery systematic or the integration of machinery product. Therefore, of coveringtechnology is based on the above community technology organic fusion one kind of comprehensive technology, but is not mechanical technical, the microelectronic technology as well as other new technical simple combination, pieces together .This is the integration of machinery and the machinery adds the machinery electrification which the electricity forms in the concept basic difference .The mechanical engineering technology has the merely technical to develop the machinery electrification, still was the traditional machinery, its main function still was replaces with the enlargement physical strength .But after develops the integration of machinery, micro electron installment besides may substitute for certain mechanical parts the original function, but also can entrust with many new functions,like the automatic detection, the automatic reduction information, demonstrate the record, the automatic control and the control automatic diagnosis and the protection automatically and so on .Not only namely the integration of machinery product is human's hand and body extending, human's sense organ and the brains look, has the intellectualized characteristic is the integration of machinery and the machinery electrification distinguishes in the function essence.2. Integration of machinery development condition integration of machinery development may divide into 3 stages roughly.20th century 60's before for the first stage, this stage is called the initial stage .In this time, the people determination not on own initiative uses the electronic technology the preliminary achievement to consummate the mechanical product the performance .Specially in Second World War period, the war has stimulated the mechanical product and the electronic technology union, these mechanical and electrical union military technology, postwar transfers civilly, to postwar economical restoration positive function .Developed and the development at that time generally speaking also is at the spontaneouscondition .Because at that time the electronic technology development not yet achieved certain level, mechanical technical and electronic technology union also not impossible widespread and thorough development, already developed the product was also unable to promote massively. The 20th century 70~80 ages for the second stage, may be called the vigorous development stage .This time, the computer technology, the control technology, the communication development, has laid the technology base for the integration of machinery development . Large-scale, ultra large scale integrated circuit and microcomputer swift and violent development, has provided the full material base for the integration of machinery development .This time characteristic is :①A mechatronics word first generally is accepted in Japan, probably obtains the quite widespread acknowledgment to 1980s last stages in the worldwide scale ;②The integration of machinery technology and the product obtained the enormous development ;③The various countries start to the integration of machinery technology and the product give the very big attention and the support. 1990s later periods, started the integration of machinery technology the new stagewhich makes great strides forward to the intellectualized direction, the integration of machinery enters the thorough development time .At the same time, optics, the communication and so on entered the integration of machinery, processes the technology also zhan to appear tiny in the integration of machinery the foot, appeared the light integration of machinery and the micro integration of machinery and so on the new branch; On the other hand to the integration of machinery system modeling design, the analysis and the integrated method, the integration of machinery discipline system and the trend of development has all conducted the thorough research .At the same time, because the hugeprogress which domains and so on artificial intelligence technology, neural network technology and optical fiber technology obtain, opened the development vast world for the integration of machinery technology .These research, will urge the integration of machinery further to establish the integrity the foundation and forms the integrity gradually the scientific system. Our country is only then starts from the beginning of 1980s in this aspect to study with the application .The State Councilsummary had considered fully on international the influence which and possibly brought from this about the integration of machinery technology developmenttrend .Many universities, colleges and institutes, the development facility and some large and middle scale enterprises have done the massive work to this technical development and the application, does not yield certain result, but and so on the advanced countries compared with Japan still has the suitable disparity.3. Integration of machinery trend of development integrations of machinery are the collection machinery, the electron, optics, the control, the computer, the information and so on the multi-disciplinary overlapping syntheses, its development and the progress rely on and promote the correlation technology development and the progress .Therefore, the integration of machinery main development direction is as follows:3.1 Intellectualized intellectualizations are 21st century integration of machinery technological development important development directions .Theartificial intelligence obtains day by day in the integration of machinery constructor's research takes, the robot and the numerical control engine bedis to the machine behavior description, is in the control theory foundation, the absorption artificial intelligence, the operations research, the computer science, the fuzzy mathematics, the psychology, the physiology and the chaos dynamics and so on the new thought, the new method, simulate the human intelligence, enable it to have abilities and so on judgment inference, logical thinking, independent decision-making, obtains the higher control goal in order to .Indeed, enable the integration of machinery product to have with the human identical intelligence, is not impossible, also is nonessential .But, the high performance, the high speed microprocessor enable the integration of machinery product to have preliminary intelligent or human's partial intelligences, then is completely possible and essential.In the modern manufacture process, the information has become the control manufacture industry the determining factor, moreover is the most active actuation factor .Enhances the manufacture system information-handling capacity to become the modern manufacture science development a key point .As a result of the manufacture system information organization and structure multi-level, makes the information the gain, the integration and the fusion presents draws up the character, information measure multi-dimensional, as well as information organization's multi-level .In the manufacture information structural model, manufacture information uniform restraint, dissemination processing and magnanimous data aspects and so on manufacture knowledge library management, all also wait for further break through.Each kind of artificial intelligence tool and the computation intelligence method promoted the manufacture intelligence development in the manufacture widespread application .A kind based on the biological evolution algorithm computation intelligent agent, in includes thescheduling problem in the combination optimization solution area of technology, receives the more and more universal attention, hopefully completes the combination optimization question when the manufacture the solution speed and the solution precision aspect breaks through the question scale in pairs the restriction .The manufacture intelligence also displays in: The intelligent dispatch, the intelligent design, the intelligent processing, the robot study, the intelligent control, the intelligent craft plan, the intelligent diagnosis and so on are various These question key breakthrough, may form the product innovation the basic research system. Between 2 modern mechanical engineering front science different science overlapping fusion will have the new science accumulation, the economical development and society's progress has had the new request and the expectation to the science and technology, thus will form the front science .The front science also has solved and between the solution scientific question border area .The front science has the obvious time domain, the domain and the dynamic characteristic .The project front science distinguished in the general basic science important characteristic is it has covered the key science and technology question which the project actual appeared.Manufacture system is a complex large-scale system, for satisfies the manufacture system agility, the fast response and fast reorganization ability, must profit from the information science, the life sciences and the social sciences and so on the multi-disciplinary research results, the exploration manufacture system new architecture, the manufacture pattern and the manufacture system effective operational mechanism .Makes the system optimization the organizational structure and the good movement condition is makes the system modeling , the simulation and the optimized essential target .Not only the manufacture system new architecture to makes the enterprise the agility and may reorganize ability to the demand response ability to have the vital significance, moreover to made the enterprise first floor production equipment the flexibility and may dynamic reorganization ability set a higher request .The biological manufacture view more and more many is introduced the manufacture system, satisfies the manufacture system new request.The study organizes and circulates method and technique of complicated system from the biological phenomenon, is a valid exit which will solve many hard nut to cracks that manufacturing industry face from now on currently .Imitating to living what manufacturing point is mimicry living creature organ of from the organization, from match more, from growth with from evolution etc. function structure and circulate mode of a kind of manufacturing system and manufacturing process.The manufacturing drives in the mechanism under, continuously by one's own perfect raise on organizing structure and circulating mode and thus to adapt the process of[with] ability for the environment .For from descend but the last product proceed together a design and make a craft rules the auto of the distance born, produce system of dynamic state reorganization and product and manufacturing the system tend automatically excellent provided theories foundation and carry out acondition .Imitate to living a manufacturing to belong to manufacturing science and life science of"the far good luck is miscellaneous to hand over", it will produce to the manufacturing industry for 21 centuries huge of influence .机电一体化摘要机电一体化是现代科学技术发展的必然结果,本文简述了机电一体化技术的基本概要和发展背景。

机械设计中英文手册

陶瓷ceramics合成纤维synthetic fibre电化学腐蚀electrochemical corrosion 车架automotive chassis悬架suspension转向器redirector变速器speed changer板料冲压sheet metal parts孔加工spot facing machining车间workshop工程技术人员engineer气动夹紧pneuma lock数学模型mathematical model画法几何descriptive geometry机械制图Mechanical drawing投影projection视图view剖视图profile chart标准件standard component零件图part drawing装配图assembly drawing尺寸标注size marking技术要求technical requirements刚度rigidity内力internal force位移displacement截面section疲劳极限fatigue limit断裂fracture塑性变形plastic distortion脆性材料brittleness material刚度准则rigidity criterion垫圈washer垫片spacer直齿圆柱齿轮straight toothed spur gear 斜齿圆柱齿轮helical-spur gear直齿锥齿轮straight bevel gear运动简图kinematic sketch齿轮齿条pinion and rack蜗杆蜗轮worm and worm gear虚约束passive constraint曲柄crank摇杆racker凸轮cams共轭曲线conjugate curve范成法generation method定义域definitional domain值域range导数\\微分differential coefficient求导derivation定积分definite integral不定积分indefinite integral曲率curvature偏微分partial differential毛坯rough游标卡尺slide caliper千分尺micrometer calipers攻丝tap二阶行列式second order determinant逆矩阵inverse matrix线性方程组linear equations概率probability随机变量random variable排列组合permutation and combination气体状态方程equation of state of gas动能kinetic energy势能potential energy机械能守恒conservation of mechanical energy动量momentum桁架truss轴线axes余子式cofactor逻辑电路logic circuit触发器flip-flop脉冲波形pulse shape数模digital analogy液压传动机构fluid drive mechanism机械零件mechanical parts淬火冷却quench淬火hardening回火tempering调质hardening and tempering磨粒abrasive grain结合剂bonding agent砂轮grinding wheel后角clearance angle龙门刨削planing主轴spindle主轴箱headstock卡盘chuck加工中心machining center车刀lathe tool车床lathe钻削镗削bore车削turning磨床grinder基准benchmark钳工locksmith锻forge压模stamping焊weld拉床broaching machine拉孔broaching装配assembling铸造found流体动力学fluid dynamics流体力学fluid mechanics加工machining液压hydraulic pressure切线tangent机电一体化mechanotronics mechanical-electrical integration 气压air pressure pneumatic pressure稳定性stability介质medium液压驱动泵fluid clutch液压泵hydraulic pump阀门valve失效invalidation强度intensity载荷load应力stress安全系数safty factor可靠性reliability螺纹thread螺旋helix键spline销pin滚动轴承rolling bearing滑动轴承sliding bearing弹簧spring制动器arrester brake十字结联轴节crosshead联轴器coupling链chain皮带strap精加工finish machining粗加工rough machining变速箱体gearbox casing腐蚀rust氧化oxidation磨损wear耐用度durability随机信号random signal离散信号discrete signal超声传感器ultrasonic sensor集成电路integrate circuit挡板orifice plate残余应力residual stress套筒sleeve扭力torsion冷加工cold machining电动机electromotor汽缸cylinder过盈配合interference fit热加工hotwork摄像头CCD camera倒角rounding chamfer优化设计optimal design工业造型设计industrial moulding design有限元finite element滚齿hobbing插齿gear shaping伺服电机actuating motor铣床milling machine钻床drill machine镗床boring machine步进电机stepper motor丝杠screw rod导轨lead rail组件subassembly可编程序逻辑控制器Programmable Logic Controller PLC 电火花加工electric spark machining电火花线切割加工electrical discharge wire - cutting相图phase diagram热处理heat treatment固态相变solid state phase changes有色金属nonferrous metal陶瓷ceramics合成纤维synthetic fibre电化学腐蚀electrochemical corrosion车架automotive chassis悬架suspension转向器redirector变速器speed changer板料冲压sheet metal parts孔加工spot facing machining车间workshop工程技术人员engineer气动夹紧pneuma lock数学模型mathematical model画法几何descriptive geometry机械制图Mechanical drawing投影projection视图view剖视图profile chart标准件standard component零件图part drawing装配图assembly drawing尺寸标注size marking技术要求technical requirements刚度rigidity内力internal force位移displacement截面section疲劳极限fatigue limit断裂fracture塑性变形plastic distortion脆性材料brittleness material刚度准则rigidity criterion垫圈washer垫片spacer直齿圆柱齿轮straight toothed spur gear 斜齿圆柱齿轮helical-spur gear直齿锥齿轮straight bevel gear运动简图kinematic sketch齿轮齿条pinion and rack蜗杆蜗轮worm and worm gear虚约束passive constraint曲柄crank摇杆racker凸轮cams共轭曲线conjugate curve范成法generation method定义域definitional domain值域range导数\\微分differential coefficient求导derivation定积分definite integral不定积分indefinite integral曲率curvature偏微分partial differential毛坯rough游标卡尺slide caliper千分尺micrometer calipers攻丝tap二阶行列式second order determinant逆矩阵inverse matrix线性方程组linear equations概率probability随机变量random variable排列组合permutation and combination气体状态方程equation of state of gas动能kinetic energy势能potential energy机械能守恒conservation of mechanical energy 动量momentum桁架truss轴线axes余子式cofactor逻辑电路logic circuit触发器flip-flop脉冲波形pulse shape数模digital analogy液压传动机构fluid drive mechanism机械零件mechanical parts淬火冷却quench淬火hardening回火tempering调质hardening and tempering磨粒abrasive grain结合剂bonding agent砂轮grinding wheelAssembly line 组装线Layout 布置图Conveyer 流水线物料板Rivet table 拉钉机Rivet gun 拉钉枪Screw driver 起子Pneumatic screw driver 气动起子worktable 工作桌OOBA 开箱检查fit together 组装在一起fasten 锁紧(螺丝)fixture 夹具(治具)pallet 栈板barcode 条码barcode scanner 条码扫描器fuse together 熔合fuse machine热熔机repair修理operator作业员QC品管supervisor 课长ME 制造工程师MT 制造生技cosmetic inspect 外观检查inner parts inspect 内部检查thumb screw 大头螺丝lbs. inch 镑、英寸EMI gasket 导电条front plate 前板rear plate 后板chassis 基座bezel panel 面板power button 电源按键reset button 重置键Hi-pot test of SPS 高源高压测试Voltage switch of SPS 电源电压接拉键sheet metal parts 冲件plastic parts 塑胶件SOP 制造作业程序material check list 物料检查表work cell 工作间trolley 台车sub-line 支线left fork 叉车personnel resource department 人力资源部production department生产部门planning department企划部QC Section品管科stamping factory冲压厂painting factory烤漆厂molding factory成型厂common equipment常用设备uncoiler and straightener整平机punching machine 冲床robot机械手hydraulic machine油压机lathe车床planer |plein|刨床miller铣床grinder磨床linear cutting线切割electrical sparkle电火花welder电焊机staker=reviting machine铆合机position职务president董事长general manager总经理special assistant manager特助factory director厂长department director部长deputy manager | =vice manager副理section supervisor课长deputy section supervisor =vice section superisor副课长group leader/supervisor组长line supervisor线长assistant manager助理to move, to carry, to handle搬运be put in storage入库pack packing包装to apply oil擦油to file burr 锉毛刺final inspection终检to connect material接料to reverse material 翻料wet station沾湿台cleaning cloth抹布to load material上料to unload material卸料to return material/stock to退料scraped |\\'skr?pid|报废scrape ..v.刮;削deficient purchase来料不良manufacture procedure制程deficient manufacturing procedure制程不良oxidation |\\' ksi\\'dei?n|氧化scratch刮伤dents压痕defective upsiding down抽芽不良defective to staking铆合不良embedded lump镶块feeding is not in place送料不到位stamping-missing漏冲production capacity生产力education and training教育与训练proposal improvement提案改善spare parts=buffer备件forklift叉车trailer=long vehicle拖板车compound die合模die locker锁模器pressure plate=plate pinch压板bolt螺栓administration/general affairs dept总务部automatic screwdriver电动启子thickness gauge厚薄规gauge(or jig)治具power wire电源线buzzle蜂鸣器defective product label不良标签identifying sheet list标示单location地点present members出席人员subject主题conclusion结论decision items决议事项responsible department负责单位pre-fixed finishing date预定完成日approved by / checked by / prepared by核准/审核/承办PCE assembly production schedule sheet PCE组装厂生产排配表model机锺work order工令revision版次remark备注production control confirmation生产确认checked by初审approved by核准department部门stock age analysis sheet 库存货龄分析表on-hand inventory现有库存available material良品可使用obsolete material良品已呆滞to be inspected or reworked 待验或重工total合计cause description原因说明part number/ P/N 料号type形态item/group/class类别quality品质prepared by制表notes说明year-end physical inventory difference analysis sheet 年终盘点差异分析表physical inventory盘点数量physical count quantity帐面数量difference quantity差异量cause analysis原因分析raw materials原料materials物料finished product成品semi-finished product半成品packing materials包材good product/accepted goods/ accepted parts/good parts良品defective product/non-good parts不良品disposed goods处理品warehouse/hub仓库on way location在途仓oversea location海外仓spare parts physical inventory list备品盘点清单spare molds location模具备品仓skid/pallet栈板tox machine自铆机wire EDM线割EDM放电机coil stock卷料sheet stock片料tolerance工差score=groove压线cam block滑块pilot导正筒trim剪外边pierce剪内边drag form压锻差pocket for the punch head挂钩槽slug hole废料孔feature die公母模expansion dwg展开图radius半径shim(wedge)楔子torch-flame cut火焰切割set screw止付螺丝form block折刀stop pin定位销round pierce punch=die button圆冲子shape punch=die insert异形子stock locater block定位块under cut=scrap chopper清角active plate活动板baffle plate挡块cover plate盖板male die公模female die母模groove punch压线冲子air-cushion eject-rod气垫顶杆spring-box eject-plate弹簧箱顶板bushing block衬套insert 入块club car高尔夫球车capability能力parameter参数factor系数phosphate皮膜化成viscosity涂料粘度alkalidipping脱脂main manifold主集流脉bezel斜视规blanking穿落模dejecting顶固模demagnetization去磁;消磁high-speed transmission高速传递heat dissipation热传rack上料degrease脱脂rinse水洗alkaline etch龄咬desmut剥黑膜D.I. rinse纯水次Chromate铬酸处理Anodize阳性处理seal封孔revision版次part number/P/N料号good products良品scraped products报放心品defective products不良品finished products成品disposed products处理品barcode条码flow chart流程表单assembly组装stamping冲压molding成型spare parts=buffer备品coordinate座标dismantle the die折模auxiliary fuction辅助功能poly-line多义线heater band 加热片thermocouple热电偶sand blasting喷沙grit 砂砾derusting machine除锈机degate打浇口dryer烘干机induction感应induction light感应光response=reaction=interaction感应ram连杆edge finder巡边器concave凸convex凹short射料不足nick缺口speck瑕??splay 银纹gas mark焦痕delamination起鳞cold slug冷块blush 导色gouge沟槽;凿槽satin texture段面咬花witness line证示线patent专利grit沙砾granule=peuet=grain细粒grit maker抽粒机cushion缓冲magnalium镁铝合金magnesium镁金metal plate钣金lathe车mill锉plane刨grind磨drill铝boring镗blinster气泡fillet镶;嵌边through-hole form通孔形式voller pin formality滚针形式cam driver铡楔shank摸柄crank shaft曲柄轴augular offset角度偏差velocity速度production tempo生产进度现状torque扭矩spline=the multiple keys花键quenching淬火tempering回火annealing退火carbonization碳化tungsten high speed steel钨高速的moly high speed steel钼高速的organic solvent有机溶剂bracket小磁导liaison联络单volatile挥发性ion离子titrator滴定仪beacon警示灯coolant冷却液crusher破碎机阿基米德蜗杆Archimedes worm安全系数safety factor; factor of safety安全载荷safe load凹面、凹度concavity扳手wrench板簧flat leaf spring半圆键woodruff key变形deformation摆杆oscillating bar摆动从动件oscillating follower摆动从动件凸轮机构cam with oscillating follower 摆动导杆机构oscillating guide-bar mechanism 摆线齿轮cycloidal gear摆线齿形cycloidal tooth profile摆线运动规律cycloidal motion摆线针轮cycloidal-pin wheel包角angle of contact保持架cage背对背安装back-to-back arrangement背锥back cone ；normal cone背锥角back angle背锥距back cone distance比例尺scale比热容specific heat capacity闭式链closed kinematic chain闭链机构closed chain mechanism臂部arm变频器frequency converters变频调速frequency control of motor speed变速speed change变速齿轮change gear change wheel变位齿轮modified gear变位系数modification coefficient标准齿轮standard gear标准直齿轮standard spur gear表面质量系数superficial mass factor表面传热系数surface coefficient of heat transfer 表面粗糙度surface roughness并联式组合combination in parallel并联机构parallel mechanism并联组合机构parallel combined mechanism并行工程concurrent engineering并行设计concurred design, CD不平衡相位phase angle of unbalance不平衡imbalance (or unbalance)不平衡量amount of unbalance不完全齿轮机构intermittent gearing波发生器wave generator波数number of waves补偿compensation参数化设计parameterization design, PD残余应力residual stress操纵及控制装置operation control device槽轮Geneva wheel槽轮机构Geneva mechanism ；Maltese cross槽数Geneva numerate槽凸轮groove cam侧隙backlash差动轮系differential gear train差动螺旋机构differential screw mechanism差速器differential常用机构conventional mechanism; mechanism in common use 车床lathe承载量系数bearing capacity factor承载能力bearing capacity成对安装paired mounting尺寸系列dimension series齿槽tooth space齿槽宽spacewidth齿侧间隙backlash齿顶高addendum齿顶圆addendum circle齿根高dedendum齿根圆dedendum circle齿厚tooth thickness齿距circular pitch齿宽face width齿廓tooth profile齿廓曲线tooth curve齿轮gear齿轮变速箱speed-changing gear boxes齿轮齿条机构pinion and rack齿轮插刀pinion cutter; pinion-shaped shaper cutter 齿轮滚刀hob ,hobbing cutter齿轮机构gear齿轮轮坯blank齿轮传动系pinion unit齿轮联轴器gear coupling齿条传动rack gear齿数tooth number齿数比gear ratio齿条rack齿条插刀rack cutter; rack-shaped shaper cutter齿形链、无声链silent chain齿形系数form factor齿式棘轮机构tooth ratchet mechanism插齿机gear shaper重合点coincident points重合度contact ratio冲床punch传动比transmission ratio, speed ratio传动装置gearing; transmission gear传动系统driven system传动角transmission angle传动轴transmission shaft串联式组合combination in series串联式组合机构series combined mechanism串级调速cascade speed control创新innovation creation创新设计creation design垂直载荷、法向载荷normal load唇形橡胶密封lip rubber seal磁流体轴承magnetic fluid bearing从动带轮driven pulley从动件driven link, follower从动件平底宽度width of flat-face从动件停歇follower dwell从动件运动规律follower motion从动轮driven gear粗线bold line粗牙螺纹coarse thread大齿轮gear wheel打包机packer打滑slipping带传动belt driving带轮belt pulley带式制动器band brake单列轴承single row bearing单向推力轴承single-direction thrust bearing单万向联轴节single universal joint单位矢量unit vector当量齿轮equivalent spur gear; virtual gear当量齿数equivalent teeth number; virtual number of teeth当量摩擦系数equivalent coefficient of friction当量载荷equivalent load刀具cutter导数derivative倒角chamfer导热性conduction of heat导程lead导程角lead angle等加等减速运动规律parabolic motion; constant acceleration and deceleration motion 等速运动规律uniform motion; constant velocity motion等径凸轮conjugate yoke radial cam等宽凸轮constant-breadth cam等效构件equivalent link等效力equivalent force等效力矩equivalent moment of force等效量equivalent等效质量equivalent mass等效转动惯量equivalent moment of inertia等效动力学模型dynamically equivalent model底座chassis低副lower pair点划线chain dotted line（疲劳）点蚀pitting垫圈gasket垫片密封gasket seal碟形弹簧belleville spring顶隙bottom clearance定轴轮系ordinary gear train; gear train with fixed axes动力学dynamics动密封kinematical seal动能dynamic energy动力粘度dynamic viscosity动力润滑dynamic lubrication动平衡dynamic balance动平衡机dynamic balancing machine动态特性dynamic characteristics动态分析设计dynamic analysis design动压力dynamic reaction动载荷dynamic load端面transverse plane端面参数transverse parameters端面齿距transverse circular pitch端面齿廓transverse tooth profile端面重合度transverse contact ratio端面模数transverse module端面压力角transverse pressure angle锻造forge对称循环应力symmetry circulating stress对心滚子从动件radial (or in-line ) roller follower对心直动从动件radial (or in-line ) translating follower对心移动从动件radial reciprocating follower对心曲柄滑块机构in-line slider-crank (or crank-slider) mechanism 多列轴承multi-row bearing多楔带poly V-belt多项式运动规律polynomial motion多质量转子rotor with several masses惰轮idle gear额定寿命rating life额定载荷load ratingII 级杆组dyad发生线generating line发生面generating plane法面normal plane法面参数normal parameters法面齿距normal circular pitch法面模数normal module法面压力角normal pressure angle法向齿距normal pitch法向齿廓normal tooth profile法向直廓蜗杆straight sided normal worm法向力normal force反馈式组合feedback combining反向运动学inverse ( or backward) kinematics反转法kinematic inversion反正切Arctan范成法generating cutting仿形法form cutting方案设计、概念设计concept design, CD防振装置shockproof device飞轮flywheel飞轮矩moment of flywheel非标准齿轮nonstandard gear非接触式密封non-contact seal非周期性速度波动aperiodic speed fluctuation非圆齿轮non-circular gear粉末合金powder metallurgy分度线reference line; standard pitch line分度圆reference circle; standard (cutting) pitch circle 分度圆柱导程角lead angle at reference cylinder分度圆柱螺旋角helix angle at reference cylinder分母denominator分子numerator分度圆锥reference cone; standard pitch cone分析法analytical method封闭差动轮系planetary differential复合铰链compound hinge复合式组合compound combining复合轮系compound (or combined) gear train复合平带compound flat belt复合应力combined stress复式螺旋机构Compound screw mechanism复杂机构complex mechanism杆组Assur group干涉interference刚度系数stiffness coefficient刚轮rigid circular spline钢丝软轴wire soft shaft刚体导引机构body guidance mechanism刚性冲击rigid impulse (shock)刚性转子rigid rotor刚性轴承rigid bearing刚性联轴器rigid coupling高度系列height series高速带high speed belt高副higher pair格拉晓夫定理Grashoff`s law根切undercutting公称直径nominal diameter高度系列height series功work工况系数application factor工艺设计technological design工作循环图working cycle diagram工作机构operation mechanism工作载荷external loads工作空间working space工作应力working stress工作阻力effective resistance工作阻力矩effective resistance moment公法线common normal line公共约束general constraint公制齿轮metric gears功率power功能分析设计function analyses design共轭齿廓conjugate profiles共轭凸轮conjugate cam构件link鼓风机blower固定构件fixed link; frame固体润滑剂solid lubricant关节型操作器jointed manipulator惯性力inertia force惯性力矩moment of inertia ,shaking moment 惯性力平衡balance of shaking force惯性力完全平衡full balance of shaking force惯性力部分平衡partial balance of shaking force 惯性主矩resultant moment of inertia惯性主失resultant vector of inertia冠轮crown gear广义机构generation mechanism广义坐标generalized coordinate轨迹生成path generation轨迹发生器path generator滚刀hob滚道raceway滚动体rolling element滚动轴承rolling bearing滚动轴承代号rolling bearing identification code 滚针needle roller滚针轴承needle roller bearing滚子roller滚子轴承roller bearing滚子半径radius of roller滚子从动件roller follower滚子链roller chain滚子链联轴器double roller chain coupling滚珠丝杆ball screw滚柱式单向超越离合器roller clutch过度切割undercutting函数发生器function generator函数生成function generation含油轴承oil bearing耗油量oil consumption耗油量系数oil consumption factor赫兹公式H. Hertz equation合成弯矩resultant bending moment合力resultant force合力矩resultant moment of force黑箱black box横坐标abscissa互换性齿轮interchangeable gears花键spline滑键、导键feather key滑动轴承sliding bearing滑动率sliding ratio滑块slider环面蜗杆toroid helicoids worm环形弹簧annular spring缓冲装置shocks; shock-absorber灰铸铁grey cast iron回程return回转体平衡balance of rotors混合轮系compound gear train积分integrate机电一体化系统设计mechanical-electrical integration system design 机构mechanism机构分析analysis of mechanism机构平衡balance of mechanism机构学mechanism机构运动设计kinematic design of mechanism机构运动简图kinematic sketch of mechanism机构综合synthesis of mechanism机构组成constitution of mechanism机架frame, fixed link机架变换kinematic inversion机器machine机器人robot机器人操作器manipulator机器人学robotics技术过程technique process技术经济评价technical and economic evaluation技术系统technique system机械machinery机械创新设计mechanical creation design, MCD机械系统设计mechanical system design, MSD机械动力分析dynamic analysis of machinery机械动力设计dynamic design of machinery机械动力学dynamics of machinery机械的现代设计modern machine design机械系统mechanical system机械利益mechanical advantage机械平衡balance of machinery机械手manipulator机械设计machine design; mechanical design机械特性mechanical behavior机械调速mechanical speed governors机械效率mechanical efficiency机械原理theory of machines and mechanisms机械运转不均匀系数coefficient of speed fluctuation机械无级变速mechanical stepless speed changes基础机构fundamental mechanism基本额定寿命basic rating life基于实例设计case-based design,CBD基圆base circle基圆半径radius of base circle基圆齿距base pitch基圆压力角pressure angle of base circle基圆柱base cylinder基圆锥base cone急回机构quick-return mechanism急回特性quick-return characteristics急回系数advance-to return-time ratio急回运动quick-return motion棘轮ratchet棘轮机构ratchet mechanism棘爪pawl极限位置extreme (or limiting) position极位夹角crank angle between extreme (or limiting) positions计算机辅助设计computer aided design, CAD计算机辅助制造computer aided manufacturing, CAM计算机集成制造系统computer integrated manufacturing system, CIMS 计算力矩factored moment; calculation moment计算弯矩calculated bending moment加权系数weighting efficient加速度acceleration加速度分析acceleration analysis加速度曲线acceleration diagram尖底从动件knife-edge follower间隙backlash间歇运动机构intermittent motion mechanism 减速比reduction ratio减速齿轮、减速装置reduction gear减速器speed reducer减摩性anti-friction quality渐开螺旋面involute helicoid渐开线involute渐开线齿廓involute profile渐开线齿轮involute gear渐开线发生线generating line of involute渐开线方程involute equation渐开线函数involute function渐开线蜗杆involute worm渐开线压力角pressure angle of involute渐开线花键involute spline简谐运动simple harmonic motion键key键槽keyway交变应力repeated stress交变载荷repeated fluctuating load交叉带传动cross-belt drive交错轴斜齿轮crossed helical gears胶合scoring角加速度angular acceleration角速度angular velocity角速比angular velocity ratio角接触球轴承angular contact ball bearing角接触推力轴承angular contact thrust bearing 角接触向心轴承angular contact radial bearing 角接触轴承angular contact bearing铰链、枢纽hinge校正平面correcting plane接触应力contact stress接触式密封contact seal阶梯轴multi-diameter shaft结构structure结构设计structural design截面section节点pitch point节距circular pitch; pitch of teeth节线pitch line节圆齿厚thickness on pitch circle节圆直径pitch diameter节圆锥pitch cone节圆锥角pitch cone angle解析设计analytical design紧边tight-side紧固件fastener径节diametral pitch径向radial direction径向当量动载荷dynamic equivalent radial load径向当量静载荷static equivalent radial load径向基本额定动载荷basic dynamic radial load rating 径向基本额定静载荷basic static radial load tating径向接触轴承radial contact bearing径向平面radial plane径向游隙radial internal clearance径向载荷radial load径向载荷系数radial load factor径向间隙clearance静力static force静平衡static balance静载荷static load静密封static seal局部自由度passive degree of freedom矩阵matrix矩形螺纹square threaded form锯齿形螺纹buttress thread form矩形牙嵌式离合器square-jaw positive-contact clutch 绝对尺寸系数absolute dimensional factor绝对运动absolute motion绝对速度absolute velocity均衡装置load balancing mechanism抗压强度compression strength开口传动open-belt drive开式链open kinematic chain开链机构open chain mechanism可靠度degree of reliability可靠性reliability可靠性设计reliability design, RD空气弹簧air spring空间机构spatial mechanism空间连杆机构spatial linkage空间凸轮机构spatial cam空间运动副spatial kinematic pair空间运动链spatial kinematic chain空转idle宽度系列width series框图block diagram雷诺方程Reynolds‘s equation离心力centrifugal force离心应力centrifugal stress离合器clutch离心密封centrifugal seal理论廓线pitch curve理论啮合线theoretical line of action隶属度membership力force力多边形force polygon力封闭型凸轮机构force-drive (or force-closed) cam mechanism 力矩moment力平衡equilibrium力偶couple力偶矩moment of couple连杆connecting rod, coupler连杆机构linkage连杆曲线coupler-curve连心线line of centers链chain链传动装置chain gearing链轮sprocket sprocket-wheel sprocket gear chain wheel联组V 带tight-up V belt联轴器coupling shaft coupling两维凸轮two-dimensional cam临界转速critical speed六杆机构six-bar linkage龙门刨床double Haas planer轮坯blank轮系gear train螺杆screw螺距thread pitch螺母screw nut螺旋锥齿轮helical bevel gear螺钉screws螺栓bolts螺纹导程lead螺纹效率screw efficiency螺旋传动power screw螺纹thread (of a screw)螺旋副helical pair螺旋机构screw mechanism螺旋角helix angle螺旋线helix ,helical line绿色设计green design design for environment马耳他机构Geneva wheel Geneva gear马耳他十字Maltese cross脉动无级变速pulsating stepless speed changes脉动循环应力fluctuating circulating stress脉动载荷fluctuating load铆钉rivet迷宫密封labyrinth seal密封seal密封带seal belt密封胶seal gum密封元件potted component密封装置sealing arrangement面对面安装face-to-face arrangement面向产品生命周期设计design for product`s life cycle, DPLC 名义应力、公称应力nominal stress模块化设计modular design, MD模块式传动系统modular system模幅箱morphology box模糊集fuzzy set模糊评价fuzzy evaluation模数module摩擦friction摩擦角friction angle摩擦力friction force摩擦学设计tribology design, TD摩擦阻力frictional resistance摩擦力矩friction moment摩擦系数coefficient of friction摩擦圆friction circle磨损abrasion wear; scratching末端执行器end-effector目标函数objective function耐腐蚀性corrosion resistance耐磨性wear resistance挠性机构mechanism with flexible elements挠性转子flexible rotor内齿轮internal gear内力internal force内圈inner ring能量energy能量指示图viscosity逆时针counterclockwise (or anticlockwise)啮出engaging-out啮合engagement, mesh, gearing啮合点contact points啮合角working pressure angle啮合线line of action啮合线长度length of line of action啮入engaging-in牛头刨床shaper凝固点freezing point; solidifying point扭转应力torsion stress扭矩moment of torque扭簧helical torsion spring诺模图NomogramO 形密封圈密封O ring seal盘形凸轮disk cam盘形转子disk-like rotor抛物线运动parabolic motion疲劳极限fatigue limit疲劳强度fatigue strength偏置式offset偏( 心) 距offset distance偏心率eccentricity ratio偏心质量eccentric mass偏距圆offset circle偏心盘eccentric偏置滚子从动件offset roller follower偏置尖底从动件offset knife-edge follower偏置曲柄滑块机构offset slider-crank mechanism 拼接matching评价与决策evaluation and decision频率frequency平带flat belt平带传动flat belt driving平底从动件flat-face follower平底宽度face width平分线bisector平均应力average stress平均中径mean screw diameter平均速度average velocity平衡balance平衡机balancing machine平衡品质balancing quality平衡平面correcting plane平衡质量balancing mass平衡重counterweight平衡转速balancing speed平面副planar pair, flat pair平面机构planar mechanism平面运动副planar kinematic pair平面连杆机构planar linkage平面凸轮planar cam平面凸轮机构planar cam mechanism平面轴斜齿轮parallel helical gears普通平键parallel key其他常用机构other mechanism in common use起动阶段starting period启动力矩starting torque气动机构pneumatic mechanism奇异位置singular position起始啮合点initial contact , beginning of contact气体轴承gas bearing千斤顶jack嵌入键sunk key强迫振动forced vibration切齿深度depth of cut曲柄crank曲柄存在条件Grashoff`s law曲柄导杆机构crank shaper (guide-bar) mechanism曲柄滑块机构slider-crank (or crank-slider) mechanism 曲柄摇杆机构crank-rocker mechanism曲齿锥齿轮spiral bevel gear曲率curvature曲率半径radius of curvature曲面从动件curved-shoe follower曲线拼接curve matching曲线运动curvilinear motion曲轴crank shaft驱动力driving force驱动力矩driving moment (torque)全齿高whole depth权重集weight sets球ball。

机械设计英文版第四版课程设计

机械设计英文版第四版课程设计IntroductionThe course design of the fourth edition of the English version of Mechanical Design ms to provide students with a comprehensive understanding of mechanical design principles and techniques, as well as hands-on experience in developing mechanical designs. This course is ideal for students who want to learn the skills necessary to design mechanical components and systems.ObjectivesThe primary objectives of this course design are:1.To introduce students to the fundamental principles ofmechanical design.2.To teach students how to design mechanical components andsystems.3.To give students practical experience with designingmechanical systems.4.To develop the critical thinking and problem-solving skillsof students in the field of mechanical design.Course OverviewThis course is divided into several modules, each focused on a specific aspect of mechanical design. These include:1.Introduction to mechanical design: This module will providean overview of the principles and practices of mechanical design.2.Materials and specifications: This module will introducestudents to the various materials used in mechanical design andhow to specify them.3.Mechanical components: This module will cover the design ofvarious mechanical components, including gears, bearings, andshafts.4.Mechanisms and systems: This module will explore the designof mechanical systems, such as couplings, clutches, and brakes.puter-ded design (CAD): This module will provide studentswith practical experience in using CAD software to designmechanical components and systems.6.Prototyping and testing: This module will cover the processof prototyping and testing mechanical designs to ensure they meet the requirements of the intended application.Course RequirementsTo successfully complete this course, students will be required to:1.Attend all lectures and be punctual to class.2.Participate in all class discussions.plete all class assignments and projects.4.Pass all exams and quizzes.ConclusionThe course design of the fourth edition of the English version of Mechanical Design is an excellent opportunity for students to learn theskills necessary to design mechanical components and systems. By developing a comprehensive understanding of mechanical design principles and techniques and getting hands-on experience in developing mechanical designs, students will be better equipped to succeed in the field of mechanical design.。

机械设计本科双语教学课程理论力学教案

机械设计本科双语教学课程理论力学教案一、课程简介1.1 课程背景理论力学是机械设计及其相关专业的一门基础课程，主要研究物体在外力作用下的运动规律和受力分析。

通过本课程的学习，使学生掌握牛顿经典力学的基本原理和方法，为后续课程以及实际工程应用奠定基础。

1.2 课程目标通过本课程的学习，使学生能够：（1）理解牛顿经典力学的基本概念、原理和定律；（2）掌握运用理论力学分析物体运动和受力的方法；（3）具备一定的英文阅读和表达能力，提高专业英语水平。

二、教学内容2.1 教材及参考书《理论力学》（英文版），作者：R. C. Hibbeler《理论力学》（中文版），作者：孙元桃等2.2 教学大纲（1）第一章：力学基本概念力、质量和加速度牛顿三定律惯性参考系和非惯性参考系（2）第二章：静力学力的分解和合成平衡条件静力学应用实例（3）第三章：运动学直线运动曲线运动速度、加速度和位移（4）第四章：动力学牛顿第二定律运动的守恒量动力学应用实例（5）第五章：刚体运动学刚体的平动和转动刚体的速度和加速度刚体的转动惯量三、教学方法3.1 授课方式采用讲授与讨论相结合的方式进行教学。

在授课过程中，教师以中文为主，适时使用英文讲解专业术语和表达方式，引导学生用英语进行思考和讨论。

3.2 实践环节安排适量的课后习题和实验，巩固所学知识，提高实际操作能力。

四、教学评价4.1 平时成绩包括课堂表现、作业完成情况、实验报告等，占总评的40%。

4.2 期末考试包括理论力学基础知识、计算题和应用题，占总评的60%。

五、教学进度安排每周授课2学时，共计16周。

具体安排如下：第一章：4周第二章：4周第三章：4周第四章：4周第五章：4周六、第六章：牛顿运动定律的应用6.1 教学内容：牛顿运动定律在实际问题中的应用摩擦力、弹力和接触力的分析动力学和运动学问题的解决方法6.2 教学方法：通过实例分析和问题解决来加深对牛顿运动定律的理解使用多媒体工具和物理实验来演示和验证牛顿定律鼓励学生进行小组讨论和案例分析，提高实践能力七、第七章：能量守恒和动力学守恒量7.1 教学内容：动能和势能的概念及其转换机械能守恒定律的应用动力学守恒量的概念和计算7.2 教学方法：通过物理实验和数值模拟来演示能量转换和守恒现象利用数学工具和物理公式进行动力学守恒量的计算练习引导学生通过问题分析和案例研究来理解守恒定律的实际应用八、第八章：刚体的运动学与动力学8.1 教学内容：刚体的平动和转动动力学刚体的转动惯量和角动量刚体运动的合成和分解方法8.2 教学方法：利用图示和物理实验来解释刚体运动的特点和规律通过数学计算和数值分析来解决刚体动力学问题引导学生运用刚体运动学与动力学的知识解决实际工程问题九、第九章：非惯性参考系与惯性参考系9.1 教学内容：非惯性参考系的定义和特点惯性参考系和非惯性参考系之间的相对运动非惯性参考系下的动力学方程9.2 教学方法：通过物理实验和数值模拟来展示非惯性参考系的现象利用数学工具和物理公式来推导非惯性参考系下的动力学方程引导学生理解和应用非惯性参考系解决复杂动力学问题十、第十章：虚拟物体与达朗贝尔原理10.1 教学内容：虚拟物体的概念和应用达朗贝尔原理的表述和证明虚拟物体在解决静力学问题中的应用10.2 教学方法：利用图示和物理实验来解释虚拟物体的原理和应用通过数学计算和数值分析来解决静力学问题，应用达朗贝尔原理引导学生运用虚拟物体与达朗贝尔原理解决实际工程问题十一、第十一章：材料力学的基本概念11.1 教学内容：材料力学的研究对象和内容内力和应力的概念材料的弹性模量和泊松比11.2 教学方法：通过实例和动画来展示材料力学的基本概念利用数学公式和图表来分析应力和应变的关系引导学生通过实验和数值模拟来验证材料力学的理论十二、第十二章：弹性变形和胡克定律12.1 教学内容：弹性变形的基本类型和特点胡克定律的表述和应用弹性模量和泊松比的概念及其计算12.2 教学方法：利用实验和物理模型来解释弹性变形的现象通过数学计算和数值模拟来应用胡克定律解决问题引导学生理解和运用胡克定律分析实际工程问题十三、第十三章：塑性变形和极限状态设计13.1 教学内容：塑性变形的基本概念和特点材料的极限状态和强度准则极限状态设计的原理和方法13.2 教学方法：通过实验和物理模型来展示塑性变形的现象利用数学公式和图表来分析极限状态和强度准则引导学生运用极限状态设计方法解决工程中的安全问题十四、第十四章：材料力学的应用实例分析14.1 教学内容：材料力学在机械设计和制造中的应用实例受力分析和应力计算的实际问题材料选择和结构设计的考虑因素14.2 教学方法：分析实际工程案例，展示材料力学在机械设计中的应用通过计算题和设计题来训练学生的分析和设计能力引导学生结合材料力学的知识进行创新设计和优化十五、第十五章：课程总结与展望15.1 教学内容：回顾整个理论力学课程的主要概念和原理总结学习过程中的重点和难点展望理论力学在机械工程中的应用和发展趋势15.2 教学方法：通过课堂讨论和小组报告来总结课程的关键知识点进行课程复习和测试，巩固学生的理论知识引导学生关注理论力学的最新研究和发展动态重点和难点解析一、课程简介重点：牛顿经典力学的基本原理和方法。

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Chapter1
Introduction
This chapter mainly introduces the study objects and contents of the course, the basic requirements and procedure in the mechanisms design.
Machine Element(零件)——制造单元 The Basic Element of Manufacture.
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主动件(Driving Member)——输入构件 The link on which the driving force or torque acts.
从动件(Driven Member)——输出构件
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1.1
Study Object
Machinery(机械)—— Machine(机器) and Mechanism(机构):
What is Machine? For example:
Lathe
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Numerical-controlled Lathe
B1ackHawk Helicopter
the 5th of Divine Boat
Emphases★：
Concept of Machine、Mechanism、
Element 、Link
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1.1
Study Object
1.2
1.3 1.4
Several Concepts About This Course
Study Content Purpose Summary and kernel
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2、What is Mechanism?
Mechanism is a basic system of links (构件) which can transform or transmit force and motion. Examples of Mechanism：
1
2
5 1 4'
5' 1 6
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1.2 Several Concepts About This Course
Link（构件） Machine Element (零件) Driving Member (主动件)——输入构件 Driven Member (从动件)——输出构件 Frame (机架)
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Link(构件)——运动单元 The Basic Element in Kinematics Analysis.
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1.4
Purpose
It is hoped that, after studying this textbook, the student will grasp the basic theory and obtain the basic knowledge and skills needed in mechanisms synthesis and kinematic and dynamic analysis of machinery. The knowledge to be obtained from this textbook is therefore fundamental in analyzing existing machines and designing new ones.
3 4
Slider-crank mechanism 曲柄滑块机构
Gear mechanism 齿轮机构
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Cam mechanism 凸轮机构
3、Composition of machine In terms of basic manufacturing unit, a machine is composed by machine elements/components(零件/构件). In terms of the functions of the sub-system of a machine, it is comprised of the source-power（原动机）, transmission（传动部分）, execution and control/manipulation parts（执行控制/操作部分）. For the convenience of kinematic or dynamic analysis of a machine, a machine can be decomposed into mechanisms.
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1 —— Cylinder (缸体) 2 —— Piston (活塞) 3 ——Coupler (连杆) 4 —— Crank (曲柄) 4'—— Pinion (小齿轮) 4"—— Flywheel(飞轮) 5 ——Gear (大齿轮) 5'—— Inlet cam(进气凸轮) 5''——Outlet cam(排气凸轮) 6 —— Inlet valve(进气阀) 7 —— Outlet valve(排气阀)
Analysis (分析)and synthesis（综合） ——most content of the lesson Structural Analysis Analysis
Kinematic Analysis
Dynamics Analysis
Synthesis is the process of determining only the kinematics dimensions of a mechanism required to produce a particular motion.
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Summary and kernel
Machine m Link
Machine Element
Frame Driving Member Driven Member
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Chapter 1
End
Return to section contents Return to chapter contents
The link moves along with the driving member. 机架(Frame)——机构中相对不动的构件 The link is fixed with respect to the moving links within a mechanism.
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1.3 Study Content
Single-cylinder Four-stroke Internal Combustion Engine
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1、Definition of Machine A machine is a combination of mechanisms and other components that transforms, transmits, or uses energy, load, or motion for a specific purpose. A machine is a combination of components which can transmit power in a controlled manner by converting energy from one form to another and eventually producing useful work.