机械原理英语版
机械原理英文词汇
机械原理英文词汇Chapter 1 Introduction第一章绪论1.mechanism 机构2.kinematical element 运动学元件3.link 构件4.cam 凸轮5.gear 齿轮6.belt 带7.chain 链8.internal-combustion engine 内燃机9.slider-crank mechanism 曲柄滑块机构10.piston 活塞11.connecting rod 连杆12.crankshaft 曲轴13.frame 机架14.pinion 小齿轮15.cam mechanism 凸轮机构16.linkage 连杆机构17.synthesis 综合Chapter 2 Structure analysis of mechanisms 第二章机构的结构分析1. structural analysis 结构分析2. planar mechanisms 平面机构3. planar kinematical pairs 平面运动副4. mobile connection 可动连接5. transmit 传输6. transform 转换7. pair element 运动副元素8. higher pair 高副9. revolute pair 转动副10. sliding pair ,prismatic pair 移动副11. gear pair 齿轮副12. cam pair 凸轮副13. screw pair 螺旋副14. spherical pair 球面副15. surface contact 面接触16. kinematical chain 运动链17. closed chain 闭式链18. open chain 开式链19. driving links 驱动件20. driven links 从动件21. planar mechanism. 平面机构22. spatial mechanism 空间机构23. The kinematical diagram of a mechanism机构运动简图24. schematic diagram 草图25. kinematical dimensions 运动学尺寸26. fixed pivot 固定铰链27. pathway 导路28. guide bar 导杆29. profiles 轮廓30. the actual cam contour 凸轮实际廓线.31. polygon 多边形32. route of transmission 传递路线33. structural block diagram 结构框图34. Degree of Freedom (DOF) 自由度35. constraints 约束36. common normal 公法线37. compound hinge 复合铰链38. gear-linkage mechanism 齿轮连杆机构40. passive DOF 局部自由度41. redundant constraint 虚约束42. The composition principle and structural analysis组成原理与结构分析43. the basic mechanism 基本机构44. Assur groups 阿苏尔杆组45. inner pair 内副46. outer pairs 外副.47. composition principle of mechanism 机构组成原理48. kinematical determination 运动确定性Chapter 9 Balancing of Machinery第九章机械的平衡1. Vibration 振动2. Frequency 频率3. Resonant 共振4. Amplitudes 振幅5. Balancing of rotors 转子6. Rigid rotors 刚性转子7. Flexible rotors 柔性转子8. Balancing of mechanisms 机构的平衡9. Disk-like rotor 盘状转子10.Non-disk rigid rotor 非盘状转子11.the shaking force 振动力12.the shaking moment 振动力矩13.Balancing of Disk-like Rotors 盘状转子的平衡14.static imbalance 静不平衡15.static balancing machine 静平衡机16.the mass-radius product 质径积17.dynamically unbalanced 动不平衡18.balance planes 平衡基面19.Dynamic balancing machine 动平衡机20.Unbalancing Allowance 许用不平衡量Chapter 8 Motion of Mechanical Systemsand Its Regulation第八章机械系统的运转及其调节1. Periodic speed fluctuation 周期性波动2. punching machine 冲床3. Motion Equation of a Mechanical System机械系统的运动方程4. General Expression of the Equation of Motion运动方程的一般表达式5. the kinetic energy 动能6. the moment of inertia 转动惯量7. Dynamically Equivalent Model of a Mechanical System等效动力学模型8. the equivalent moment of inertia 等效转动惯量9. the equivalent moment of force 等效力矩10.the equivalent link 等效构件11.Pump 泵12.Blower 鼓风机13.Flywheel 飞轮1)Calculate the degree of freedom (DOF) of the mechanisms. shown in the following figure.2) judge and point out the compound hinge, passive DOF or redundant constraints.3)Judge whether the mechanism has determined motion?2.Carry out the structural analysis for the mechanism in followingfigure.(1)List the assembly order of Assur groups,(2) Judge the grade of the mechanism.1. There are four imbalances in a disk-like rotor. The masses, rotating radii and angular orientations are: m1=10kg, m2=8kg,m3=7kg and m4=5kg, r1=100mm, r2=150mm, r3=200mm andr4=100mm. The rotor is to be balanced by removing a mass mb at a rotating radius of rb=100mm. Find the magnitude mb and its location angle b.(15points)。
机械原理英文Mechanical principles
十四、Mechanical principlesDegrees of freedomIn mechanics, degrees of freedom are the set of independent displacements and/or rotations that specify completely the displaced or deformed position and orientation of the body or system.FormulaPl——lower pair , surface contactPh——higher pair , point or line contactn——activity component3——every component have 3 degrees of freedom 2——lower pair have 2 degrees of freedom1——high pair have 1 degrees of freedomF>1 , we can not know what happen next timeF=1 , we can know what happen next timeF=0 , mechanics will not move三审，笔试，有三个图，分别计算哪个结构是稳定的，第一个是稳定的，第二个是稳定但是有过度约束，第三个不稳定可运动。
在过度约束中，审核官问我知道不知道一个公式s=2k-3,我不明白，回来和同学讨论觉得这个应该是计算虚约束的公式，请多注意。
Plane mechanism`s motion analysisInstantaneous center of velocityRevolute pair join, two mechanism , instantaneous center of velocity in center of revolute pair.Rod 1 and rod 2 are combined by revolute pair, P12 is instantaneous center of velocity.Pure-slide pair join, two mechanism , instantaneous center of velocity infinite distance of vertical motion direction.A move along rod B. P12 in infinite distance of vertical rodB .High pair join , two mechanism , they are pure rolling , instantaneous center of velocity in contact point of two mechanism.P12 is instantaneous center of velocityHigher pair join , two mechanism , they are relative slide , instantaneous center of velocity in base tangent.P12 in t-t.Kennedy-Aronhold theoremP13 in P12 and P23 join line. P13 in P14 and P34 join line. P24 in P12 and P14 join line. P24 in P23 and P34 join line.2 and 4 velocity is same in P24Plane four bar mechanismA and D fix called stander , AB CD called side link. Link can rotation called crank--ABLink can shake in range of degree called rocker--CD Crank-rocker mechanismRadarDouble-crank mechanismTrain wheelDouble-rocker mechanismCraneCam mechanismAdvantag e: structure is simple, respond is quickly. Disadvantage: cam produce is difficult, easily wear between cam and follower.GearA gear is a component within a transmission device that transmits rotational force to another gear or device. Spur gearSpur gear are used for low speed applications and those situations where noise control is not a problem.Helical gearHelical gear operate more smoothly than do spur gear. The use of helical gears is indicated when the application involves high speeds , large power transmission or where noise abatement is important,A disadvantage of helical gear is a resultant thrust along the axis of the gear , which needs to be accommodated by appropriate thrust bearing , and a greater degree of sliding friction between the meshing teeth , often addressed with specific additives in the lubricant. Double helical gearsDouble helical gears , also know as herringbone gears , overcome the problem of axis thrust presented by single helical gears by having teeth that set in a "V" shape. Bevel gearThe angle between the shafts can be anything except 0 and 180 degree.Worm gearThe prime feature of a worm-and-gear set is that it allows the attainment of a high gear ratio with few parts in a small space.Rack and pinionTorque cam be converted to linear force by meshing a rack with a pinion : the pinion turns the rack moves in a straight line.Planet gear。
机械原理英语
机械原理英语Mechanical Principles in English。
Mechanical principles are the foundation of engineering and technology. Understanding these principles is crucial for anyone working in the field of mechanical engineering. In this document, we will discuss some of the key mechanical principles in English.First and foremost, it is important to understand the concept of force. Force is a vector quantity that can cause an object to accelerate, decelerate, or change direction. It is measured in units of newtons and is represented by the symbol F. The magnitude and direction of a force are essential in determining its effect on an object.Next, let's consider the concept of work and energy. Work is done when a force acts on an object to move it a certain distance. The amount of work done is equal to the force applied multiplied by the distance moved in the direction of the force. Energy, on the other hand, is the ability to do work. There are different forms of energy, including kinetic energy (energy of motion) and potential energy (energy of position).Another important mechanical principle is the study of simple machines. Simple machines are basic mechanical devices that apply a force to accomplish work. The six types of simple machines are the lever, wheel and axle, pulley, inclined plane, wedge, and screw. These simple machines can be combined to create more complex machines that make work easier.Furthermore, it is crucial to understand the concept of mechanical advantage. Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device, or machine system. It is calculated by dividing the output force by the input force. Understanding mechanical advantage is essential for designing and optimizing mechanical systems.Additionally, the study of motion and its principles is fundamental in mechanical engineering. Motion is described in terms of displacement, velocity, and acceleration.The laws of motion, formulated by Sir Isaac Newton, are the foundation of classical mechanics. These laws describe the relationship between the motion of an object and the forces acting on it.Moreover, the study of fluid mechanics is essential in understanding the behavior of fluids (liquids and gases) and their interactions with solid objects. Fluid mechanics plays a crucial role in various engineering applications, including the design of pumps, turbines, and hydraulic systems.In conclusion, the study of mechanical principles in English is essential for anyone working in the field of mechanical engineering. Understanding concepts such as force, work and energy, simple machines, mechanical advantage, motion, and fluid mechanicsis crucial for designing and optimizing mechanical systems. By mastering these principles, engineers can develop innovative solutions to complex engineering problems and contribute to the advancement of technology and society.。
机械原理中英文对照
径向槽 运动循环 运动系数 顶锥角 根锥角 顶隙
Intermittenk?url=TfmxJn 5IdPnJvmDfGji 11 kv9eVc8nK1YG
Cam Gear Gear train
凸轮（机构） 齿轮（机构） 齿轮系
Statics
Indexing mechanism
间歇运动机构
1
1 Composition and Mobility of Planar Mechanisms
Planar mechanism Mobility
Links Kinematic pairs Joints Elements Revolute Hinge Slider Cam pair Compound hinge Local DOF
0 Introduction
Machinery Machine Mechanism Link Kinematic pair Linkage 机械 机器 机构 构件 运动副 连杆（机构） Displacement Velocity Acceleration Kinematics Dynamics Kinetics 位移 速度 加速度 运动学 动力学 动力学（一般特指 在分析受力时考虑 物体所受的惯性力） 静力学
螺旋线 渐开螺旋面 端面 法面
Superscript Subscript Lead Ellipse
上标 下标 导程 椭圆
9
5 Gear Trains
Spur gears Helical gears Pinion Rack Bevel gears Worm Worm wheel External gears Internal gears Gear train with fixed axes Epicyclic gear train 直齿轮 斜齿轮 小齿轮 齿条 圆锥齿轮 蜗杆 蜗轮 外啮合齿轮 内啮合齿轮 定轴轮系 周转轮系 Planetary gear train Differential gear train Combined gear train Train ratio Sun gear Planet gear Planet carrier Peripheral velocity 行星轮系 差动轮系 复合轮系 （轮系的）传动比 太阳轮，中心轮 行星轮 转臂 圆周速度
机械原理英语版范文
机械原理英语版范文Mechanical PrinciplesIntroductionMechanical principles are the fundamental concepts and laws that govern the behavior and functions of machines and mechanical systems. These principles form the basis of mechanical engineering, providing engineers with the tools and knowledge necessary to design, analyze, and optimize mechanical systems. Understanding mechanical principles is essential for anyone working in the field of mechanical engineering.Newton's Laws of MotionOne of the most fundamental mechanical principles isNewton's laws of motion. These three laws describe the relationship between the motion of objects and the forces acting upon them. The first law states that an object at rest will remain at rest, and an object in motion will continue moving in a straight line at a constant velocity, unless acted upon by an external force. The second law states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. The third law states that for every action, there is an equal and opposite reaction.Mechanical AdvantageFrictionFriction is another important mechanical principle. It is the force that opposes the relative motion of two surfaces in contact with each other. Friction can be both beneficial and detrimental. On one hand, it allows us to walk, drive vehicles, and hold objects without slipping. On the other hand, it causes a loss of energy and wear and tear in mechanical systems. Engineers must take friction into account when designing machines to ensure they function efficiently and reliably.TorqueStress and StrainConclusionThese are just a few of the many mechanical principles that form the foundation of mechanical engineering. By understanding these principles, engineers can design efficient and reliable machines that meet the needs of society. Mechanical engineering continues to advance, with new technologies and principles being discovered and applied every day. The principles discussed here provide a solid starting point for aspiring mechanical engineers to build upon as they delve deeper into the field.。
机械原理第一章cup英文版
Course information and requirements
Information
Shimin Zhang（张仕民） Office: Rm. 602, New Bldg. Tel.: 89733835(o) E-mail: smzhang@
Course information and requirements
How to analyze mechanism & How to synthesize mechanism？
What are we going to study in this course?
The Content of our course
It is broadly divided into two parts. 1. Kinematics of Mechanism: the study of motion
mechanisms & How to synthesize mechanisms
What are we going to study in this course?
Example of the Machines and Mechanisms
Mechanisms: pencil sharper, clock, folding chair, adjustable desk lamp, bike Machines: robots, bulldozer, park rides, elevator, engine. Can you give more examples? Some Mechanisms widely used in our life.
How to become an engineer
机械原理英语版培训课件
Oscillating Motion
Explore the concept of oscillating motion and its applications in pendulums and vibrating systems.
Cams and Follower Systems
1
Design Principles
Chain Drives
Understand the design and maintenance of chain drives in industrial machinery.
Actuators and Controls
1 Types of Actuators 2 Control Systems
Kinematics
Understand the principles of motion and the analysis of mechanisms using kinematic equations.
Cams and Follower Systems
Discover the different types of cam mechanisms and their applications in industry.
Explore different types of actuators, including hydraulic, pneumatic, and electric actuators.
Understand the principles of control systems and their role in automating mechanical processes.
Types of Motion and Applications
机械原理(双语)第一章
Piston 2
Coupler 3 Crank 4 Frame 1
Pinion 4'
Gear 5
Cam 5'
Follower 6 Frame 1
Frame 1 Cam 5" Follower 7 Frame 1
Mechanism(机构) is a system of links(构件) which can transform(转换) or transmit(传递) force and motion.
Piston 2
Coupler 3 Crank 4 Frame 1
Slider-crank mechanism
曲柄滑块机构
1
2
3 4
Piston 2
Coupler 3 Crank 4 Fram
Frame 1
Gear mechanism
齿轮机构
5 1 4'
Piston 2
齿轮机构
Cam mechanism
凸轮机构
1 6
5
3 4
1
4'
5'
Mechanism(机构) is a basic system of links(构件) which can transform(转换) or transmit(传递) force and motion. The function of the slider-crank mechanism is to transform the reciprocation(往复移动) of the piston 2 into the rotation of the crank 4. The function of the gear mechanism is to change the direction and speed of rotation. The function of the cam mechanism is to transform the continuous rotation of the cam into a regular reciprocation of the follower.
机械原理英文经典书籍
机械原理英文经典书籍One classic book on mechanical principles is "Mechanics of Materials" by Ferdinand Beer, E. Russell Johnston, Jr., John DeWolf, and David Mazurek. This book covers the fundamental principles of mechanics, including stress, strain, and deformation of solid materials. It also delves into topics such as axial loading, torsion, bending, and transverse shear. The clear and comprehensive explanations make it a widely used textbook for engineering students and professionals alike.Another widely acclaimed book is "Engineering Mechanics: Dynamics" by J.L. Meriam and L.G. Kraige. This book provides a thorough understanding of the principles of dynamics, including kinematics, kinetics, and energy methods. It covers topics such as particle dynamics, planar kinetics of rigid bodies, and three-dimensional dynamics of rigid bodies. The book also includes numerous real-world examples and applications to help readers grasp the concepts more effectively.In addition, "Machinery's Handbook" by Erik Oberg, Franklin D. Jones, Henry H. Ryffel, and Christopher J.McCauley is a classic reference for mechanical design and engineering. This handbook contains a wealth of information on mechanical principles, formulas, tables, and standards. It covers a wide range of topics, including mathematics, mechanics and strength of materials, properties and treatment of materials, and much more. It is an indispensable tool for mechanical engineers and machinists.Other notable books on mechanical principles include "Theory of Machines and Mechanisms" by John J. Uicker, Gordon R. Pennock, and Joseph E. Shigley, and "Fundamentals of Machine Component Design" by Robert C. Juvinall and Kurt M. Marshek. These books provide in-depth coverage of the principles and applications of machine design, including mechanisms, mechanical systems, and machine components.以上是一些经典的机械原理书籍，它们涵盖了力学、机械设计和材料力学等领域的基本原理和实际应用。
机械原理 英文
机械原理英文Mechanical Principles。
Mechanical principles are the foundation of many engineering disciplines and are essential for understanding how machines and structures work. These principles are based on the laws of physics and are used to design and analyze mechanical systems. In this document, we will explore the basic principles of mechanics and their applications in engineering.One of the fundamental principles of mechanics is Newton's laws of motion. These laws describe the relationship between the motion of an object and the forces acting on it. The first law states that an object at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an external force. The second law relates the force acting on an object to its mass and acceleration, while the third law states that for every action, there is an equal and opposite reaction.Another important concept in mechanical principles is the study of statics and dynamics. Statics deals with the equilibrium of stationary objects and the forces acting on them, while dynamics focuses on the motion of objects and the forces causing the motion. These principles are crucial for designing stable structures and analyzing the performance of moving components in machines.Mechanical principles also encompass the study of materials and their properties. Understanding the behavior of materials under different conditions is essential for designing reliable and efficient mechanical systems. For example, the strength, stiffness, and ductility of materials determine their suitability for specific applications, and engineers must consider these factors when selecting materials for a design.In addition to the fundamental principles of mechanics, there are various mechanical devices and systems that rely on these principles for their operation. For example, gears, levers, pulleys, and hydraulic systems are all based on mechanical principles and are used in a wide range of applications, from simple machines to complex industrial equipment.The application of mechanical principles is not limited to traditional mechanical engineering disciplines. It also plays a crucial role in fields such as aerospace engineering, automotive engineering, civil engineering, and biomechanics. In aerospace engineering, for instance, the principles of mechanics are used to design aircraft and spacecraft that can withstand the forces of flight and space travel. In automotive engineering, these principles are employed to optimize the performance and safety of vehicles. In civil engineering, they are used to design structures that can withstand various loads and environmental conditions. In biomechanics, mechanical principles are applied to understand the mechanics of the human body and develop medical devices and treatments.In conclusion, mechanical principles are essential for understanding the behavior of machines and structures and are the basis for many engineering disciplines. By studying these principles and their applications, engineers can design innovative and efficient mechanical systems that meet the needs of modern society. Whether it's designing a new machine, developing a new material, or improving an existing system, a solid understanding of mechanical principles is crucial for success in the field of engineering.。
机械原理中英文对照ppt课件
1 Composition and Mobility of Planar Mechanisms
Planar mechanism Mobility Links Kinematic pairs Joints Elements Revolute Hinge Slider Cam pair Compound hinge Local DOF
摩擦 磨损 载荷 行程 推程 回程 休止 远休止 近休止 位移 速度 加速度
4
3 Continued
Jerk Base circle Angular velocity Oscillating angle Center distance Constant Polynomial Rigid impulse Soft impulse Pressure angle
反演 急回机构 摆角 压力角 传动角 死点 行程 回程 中点 垂线 平行四边形 机构 摇杆极位
3
3 Analysis and Synthesis of Cam Mechanisms
Cam Follower Translate Oscillate Roller Knife-edge follower Flat-faced follower In-line Offset Profile Contact stress现方式做保护处理对用户上传分享的文档内容本身不做任何修改或编辑并不能对任何下载内容负责
0 Introduction
Machinery Machine Mechanism Link Kinematic pair Linkage
机械 机器 机构 构件 运动副 连杆（机构）
Geneva
日内瓦（瑞士） Motion cycle
Ratchet mechanism 棘轮机构
机械原理英文课件：Chap8 design of gear mechanism
(1)intersecting shaft gears
the curved teeth bevel gear has teeth that are curved with a zero degree spiral angle they are quieter in action than the other bevel gears
• Motion is to be transmitted between shafts whose axes intersect or skew by gears
1. Parallel shaft gears
called planar gear mechanism
Spur gears Helical gears Herringbone gears
齿轮用于传递（变换）运动和力。 （1）speed transformation转速大小的变换
w1
(avi) w2
齿数比 z1 决定转速变换量 z2
z1
w2 =
z1 z2
w1
z2
(2) Changing speed direction转速方向的变换
(avi)
(avi)
(avi)
rotation direction of parallel axis external contact gear transmission can be changed
(avi)
(avi)
(avi)
相交轴外啮合齿轮传动不仅改变齿轮的回转方向还改
变运动
改变齿轮的回转
方向还改变运动
的传递方向
机械原理英文词汇表
机械原理英文词汇表周传喜编长江大学机械学院Chapter 1 Introduction第一章 绪论1.mechanism 机构2.kinematical element 运动学元件3.link 构件4.cam 凸轮5.gear 齿轮6.belt 带7.chain 链8.internal-combustion engine 内燃机9.slider-crank mechanism 曲柄滑块机构10.piston 活塞11.connecting rod 连杆12.crankshaft 曲轴13.frame 机架14.pinion 小齿轮15.cam mechanism 凸轮机构16.linkage 连杆机构17.synthesis 综合Chapter 2 Structure analysis of mechanisms 第二章 机构的结构分析1. structural analysis 结构分析2. planar mechanisms 平面机构3. planar kinematical pairs 平面运动副4. mobile connection 可动连接5. transmit 传输6. transform 转换7. pair element 运动副元素8. higher pair 高副9. revolute pair 转动副10. sliding pair ,prismatic pair 移动副11. gear pair 齿轮副12. cam pair 凸轮副13. screw pair 螺旋副14. spherical pair 球面副15. surface contact 面接触16. kinematical chain 运动链17. closed chain 闭式链18. open chain 开式链19. driving links 驱动件20. driven links 从动件21. planar mechanism. 平面机构22. spatial mechanism 空间机构23. The kinematical diagram of a mechanism机构运动简图24. schematic diagram 草图25. kinematical dimensions 运动学尺寸26. fixed pivot 固定铰链27. pathway 导路28. guide bar 导杆29. profiles 轮廓30. the actual cam contour 凸轮实际廓线.31. polygon 多边形32. route of transmission 传递路线33. structural block diagram 结构框图34. Degree of Freedom (DOF) 自由度35. constraints 约束36. common normal 公法线37. compound hinge 复合铰链38. gear-linkage mechanism 齿轮连杆机构40. passive DOF 局部自由度41. redundant constraint 虚约束42. The composition principle and structural analysis组成原理与结构分析43. the basic mechanism 基本机构44. Assur groups 阿苏尔杆组45. inner pair 内副46. outer pairs 外副.47. composition principle of mechanism 机构组成原理48. kinematical determination 运动确定性Chapter 3 kinematic analysis of mechanicsms 第三章 机构的运动分析1. velocity 速度2. acceleration 加速度3. parameter 参数3. graphical method 图解法4. analytical method 解析法5. experimental method 实验法6. instant center 瞬心7. classification of instant centers 瞬心的分类8. absolute instantaneous center 绝对瞬心9. relative instantaneous center 相对瞬心10. the method of instantaneous center 瞬心法11. the Aronhold-Kennedy theorem阿朗浩尔特-肯尼迪定理(即三心定理)12. the four-bar linkage 四杆机构13. inversion of the slider-crank导杆机构(曲柄滑块机构的倒置机构) 14. complex mechanism 复杂机构，多杆机构Chapter 4 Planar Linkage Mechanicsms 第四章 平面连杆机构1.four-bar linkage 四杆机构2.crank-rocker mechanism 曲柄摇杆机构3.double-crank mechanism 双曲柄机构4.double-rocker mechanism 双摇杆机构5.Crashof’s criterion 格拉索夫判据6.Condition for having a crank 有曲柄的条件7.slider-crank mechanism 曲柄滑块机构8.offset distance 偏距9.offset slider-crank mechanism 偏置曲柄滑块机构10.in-line slider-crank mechanism 对心曲柄滑块机构11.rotating guide-bar mechanism. 转动导杆机构12.oscillating guide-bar mechanism 摆动导杆机构13.double rotating block mechanism 双转块机构14.crank and oscillating block mechanism 曲柄摇块机构15.variations 变异16.inversions 倒置17.transmission angle 传动角18.dead point 死点19.imbalance angle 极位夹角20.time ratio 行程速比系数21.quick-return mechanism 急回机构22.pressure angle 压力角23.toggle positions 肘节位置24.oldham coupling 联轴器25.flywheel 飞轮26.clamping device 夹具27.dimensional synthesis 尺度综合28.function generation 函数发生器29.body guidance 刚体导引30.path generation 轨迹发生器Chapter 5 Cam Mechanisms第五章凸轮机构1. contour 轮廓2. Follower 从动件3. Plate cam(or disc cam) 盘形凸轮4. Translating cam 移动凸轮5. Three-dimensional cam 空间凸轮6. cylindrical cam 圆柱凸轮7. Translating follower 直动从动件8. Oscillating follower 摆动从动件9. Camshaft 凸轮轴10.in-line translating follower 对心直动从动件11.offset translating follower 偏置直动从动件12.Knife-edge follower 尖底从动件13.Roller follower 滚子从动件14.Flat-faced follower 平底从动件15.Force-closed cam mechanism 力封闭凸轮机构16.Form-closed cam mechanism 形封闭凸轮机构17.Lift 行程18.cam angle for rise 推程角19.cam angle for outer dwell 远休止角20.cam angle for return 回程角21.cam angle for inner dwell 近休止角22.the quasi-velocity 类速度23.the quasi-acceleration 类加速度24.Constant Velocity Motion Curve 等速运动规律25.rigid impulse 刚性冲击26.Constant Acceleration and Deceleration Motion Curve等加速等减速运动规律27.soft impulse 柔性冲击29.Cosine Acceleration Motion Curve (Simple Harmonic MotionCurve) 余弦加速度运动规律（简谐运动规律） 30.Sine Acceleration Motion Curve (Cycloid Motion Curve)正弦加速度运动规律（摆线运动规律）31.3-4-5 Polynomial Motion Curve 3-4-5多项式运动规律bined Motion Curves 组合运动规律33.the cam contour 实际廓线34.the pitch curve 理论廓线35.prime circle 基圆36.the common normal 公法线37.positive offset 正偏置38.negative offset 负偏置39.outer envelope 外包络线40.inner envelope 内包络线41.The locus of the centre of the milling cutter铣刀中心轨迹42.Pressure Angle 压力角43.acute angle 锐角44.the normal 法线45.The allowable pressure angle 许用压力角46.Radius of Curvature 曲率半径47.Cusp 尖点48.Undercutting 根切49.The angular lift 角行程50.interference 干涉Chapter 6 Gear Mechanisms第六章 齿轮机构1. constant transmission ratio 定传动比2. planar gear mechanisms 平面齿轮机构3. spatial gear mechanisms 空间齿轮机构4. external gear pair 外齿轮副5. internal gear pair 内齿轮副6. rack and pinion 齿条和齿轮7. spur gear 直齿轮8. helical gear 斜齿轮9. double helical gear 人字齿轮10.spur rack 直齿条11.helical rack 斜齿条12.bevel gear mechanism 圆锥齿轮机构13.crossed helical gears mechanism 螺旋齿轮机构14.worm and worm wheel mechanism 蜗杆蜗轮机构15.Fundamentals of Engagement of Tooth Profiles齿廓啮合基本定律16.the pitch point 节点17.the pitch circle 节圆18.conjugate profiles 共轭齿廓19.transmission ratio 传动比20.involute gear 渐开线齿轮21.the radius of base circle 基圆半径22.generating line 发生线23.unfolding angle 展角24.table of involute function 渐开线函数表25.gearing 啮合26.standard involute spur gears 标准渐开线直齿轮27.the facewidth 齿宽28.addendum circle (or tip circle) 齿顶圆29.dedendum circle (or root circle) 齿根圆30.arbitrary circle 任意圆31.the tooth space 齿槽32.the spacewidth 齿槽宽33.the pitch 齿距，周节34.the reference circle 分度圆35.module 模数36.addendum 齿顶高37.dedendum 齿根高38.tooth depth 齿全高39.the coefficient of addendum 齿顶高系数40.the coefficient of bottom clearance 顶隙系数41.bottom clearance 顶隙42.the normal tooth 正常齿43.the shorter tooth 短齿44.base pitch 基圆齿距，基节45.normal pitch 法向齿距，法节46.conjugated point 共轭点47.proper meshing conditions 正确啮合条件48.working pressure angle 啮合角49.the backlash 齿侧间隙50.the bottom clearance 顶隙51.the reference centre distance 标准中心距52.contact ratio 重合度53.the actual working profile 实际工作齿廓54.the actual line of action 实际啮合线55.manufacturing methods of involute profiles渐开线齿廓的加工方法56.form cutting 仿形法57.generating cutting 展成法或范成法58.disk milling cutter 盘形铣刀59.end milling cutter 指状铣刀60.broach 拉刀ling machines. 铣床62.rack-shaped shaper cutter 齿条插刀63.shaping 插齿64.hobbing 滚齿65.rack-shaped cutter 齿条型刀具the 车床67.cutter Interference 根切68.corrected gears 变位齿轮69.the modification coefficient 变位系数70.positively modified 正变位71.negatively modified 负变位72.the gearing equation without backlash 无侧隙啮合方程73.involute helicoids 渐开线螺旋面74.the transverse plane 端面75.the normal plane 法面78.the transverse contact ratio 端面重合度79.the overlap ratio 轴向重合度80.the virtual gear 当量齿轮81.the virtual number of teeth 当量齿数82.axial thrust 轴向推力83.worm gearing 蜗杆传动84.righthanded 右旋85.lefthanded 左旋86.ZA-worm 阿基米德蜗杆87.involute helicoid worms ----ZI-worm 渐开线蜗杆88.arc-contact worms -----ZC-worm 圆弧齿蜗杆89.enveloping worm 包络蜗杆90.The number of threads 头数91.bevel gears 圆锥齿轮92.back cone 背锥93.virtual gear 当量齿轮94.the reference cone 分度圆锥95.sector gear 扇形齿轮96.the outer cone distance 外锥距97.the reference cone angle 分度圆锥角98.The apexes 锥顶99.The dedendum angle 齿根角100.dedendum cone angle 齿根圆锥角Chapter 7 Gear Trains第七章 轮系1. gear train with fixed axes 定轴轮系2. epicyclical gear train 周转轮系3. elementary epicyclical gear trains 基本周转轮系4. combined gear trains 复合轮系5. planet gear 行星轮6. planet carrier 行星架,系杆,转臂7. sun gears 太阳轮,中心轮8. differential gear train 差动轮系9. the train ratio of a gear train 轮系传动比10.idle wheels 惰轮11.converted gear train 转化轮系12.the efficiency of the gear train 轮系效率13.branching transmission 分路传动14.the brake 刹车片15.the clutch 离合器16.negative mechanism 负号机构17.positive mechanism 正号机构18.train ratio condition 传动比条件19.concentric condition 同心条件20.assembly condition 装配条件21.planetary reducer with small tooth difference少齿差行星减速器 22.cycloidal-pin wheel planetary gearing摆线针轮行星传动 23.harmonic drive gearing 谐波传动Chapter 8 Other Common Mechanisms 第八章 其它常用机构1. ratchet mechanism 棘轮机构2. pawl 棘爪3. intermittent motion 间歇运动4. geneva mechanism 槽轮机构5. external geneva mechanism 外槽轮机构6. internal geneva mechanism 内槽轮机构7. geneva rack mechanism 齿条槽轮机构8. spherical geneva mechanisms 球面槽轮机构9. the ratio k between motion time and dwell time运动与停歇时间比k10.Cam-Type Index Mechanisms 凸轮式间歇运动机构11.Cylindrical Cam Index Mechanisms 圆柱凸轮式间歇运动机构12.Universal Joints 万向联轴节13.The Single Universal Joint 单万向联轴节14.The Double Universal Joint 双万向联轴节15.Screw Mechanisms 螺旋机构16.single-threadscrew mechanisms 单螺旋机构17.Double-thread screw mechanisms 复式螺旋机构18.Index cam mechanism 分度凸轮机构19.Geared linkages 齿轮连杆机构Chapter 10 Balancing of Machinery第十章 机械的平衡1. Vibration 振动2. Frequency 频率3. Resonant 共振4. Amplitudes 振幅5. Balancing of rotors 转子6. Rigid rotors 刚性转子7. Flexible rotors 柔性转子8. Balancing of mechanisms 机构的平衡9. Disk-like rotor 盘状转子10.Non-disk rigid rotor 非盘状转子11.the shaking force 振动力12.the shaking moment 振动力矩13.Balancing of Disk-like Rotors 盘状转子的平衡14.static imbalance 静不平衡15.static balancing machine 静平衡机16.the mass-radius product 质径积17.dynamically unbalanced 动不平衡18.balance planes 平衡基面19.Dynamic balancing machine 动平衡机20.Unbalancing Allowance 许用不平衡量Chapter 11 Motion of Mechanical Systemsand Its Regulation第十一章 机械系统的运转及其调节1. Periodic speed fluctuation 周期性波动2. punching machine 冲床3. Motion Equation of a Mechanical System机械系统的运动方程4. General Expression of the Equation of Motion运动方程的一般表达式5. the kinetic energy 动能6. the moment of inertia 转动惯量7. Dynamically Equivalent Model of a Mechanical System等效动力学模型8. the equivalent moment of inertia 等效转动惯量9. the equivalent moment of force 等效力矩10.the equivalent link 等效构件11.Pump 泵12.Blower 鼓风机13.Flywheel 飞轮Chapter 12 Creative Design of Mechanism Systems 第十二章 机械系统的创新设计1. prototype machine 样机2. Working cycle diagrams 工作循环图3. reference link 定标件4. Circular working cycle diagram 圆工作循环图5. Rectilinear working cycle diagram 矩形工作循环图6. Rectangular coordinate working cycle diagram直角坐标式工作循环图。
机械原理英文课件：introduction
Contents of Mechical Principle
Structural analysis of planar mechanisms（平面机构 的结构分析）
The shuttle casts Harbert Space Telescope using mechanical arm
Spider mine detection robot
Micro mechanical components of micron(微米) size are made by lithography technology（光刻技术）
Engineering drawing(工程制图) Interchangeability and measurement
basis（互换性与测量技术基础） Mechanical principal（机械原理） Mechanical component（机械零件）
Engineering drawing
Organization of the Course
1. Class Instruction 2. Homework & Presentation 3. A Lot of Experiments 4. Simple Projects & Research Reports 5. Discussion & Communication 6. No Examination or quiz
Tolerance
Mechanical principal
Mechanism of pestle rice捣米机构 Zhang Heng’s seismograph张衡地动仪 Du Shi’s Water drainage杜诗水排
机械原理英文版3齿轮
formula deduction
●Check pressure angle for roller follower check the case of self-lock ●Size of cam and follower
Cam Design
pinion
GEAR
Driving gear Transmission ratio
Cam Design
GEAR
Time varying output function
Noncircuilar Gear--printing press
Cam Design
GEAR
No slip in transmission
Synchronous belt –timing belt in automobile
30
45
●Equal divide base circle ●Envelope of tangent line ●Direction
review
Key points in cam chapter
● SVAJ curve ● graphical method for cam diagram ●Calculate coordinate for 3 typical cam
out d in mv in d out
Torque ratio?
Driven gear Spur Gear (直齿轮） external set
Cam Design
out d in mv in d out
GEAR
Rack and pinion
mv
put d in in d out
translation Internal set Spur Gear
机械原理外语版linkage
Designing 4 Bar LinkagesStep 1 | Step 2 | Step 3 | Step 4 | JammingIntroduction:This handout will take you through the steps ofdesigning a 4 bar linkage. A four bar linkage isused to define and constrain the motion of an objectto a particular path. The four bars of the linkage areas follows.The Coupler:This is the bar whose motion is beingcontrolled.The Crank:This is the bar connecting the drive source ofthe linkage to the coupler.The Follower:The bar that connect the coupler to thegound.The Ground:The 4th "bar" is the ground or the base of themachine. Even though this does not look likea bar, it functions as one. The follower andcrank (via motor) are both connected to theground.Note: All drawings show both the inital and final positions of linkages.Step 1: Draw Coupler in its Initial and Final PositionsStep 2: Draw ArcsDraw arcs from each mounting point on the output bar. The radius of the arcs should be the same for each mounting hole.Step 3: Draw Locus LinesDraw a pair of lines, one connecting the intersections of each pair of arcs. These lines represent the locus of possible end points for the connecting links.Step 4: Draw Connecting BarsDraw in the connecting bars. There are many possible location for the mounting point on connecting bars. The two figures below show equally valid possibilities for the location of the connecting bars in this example. The initial and final positions of all bars are shown.orTo prevent the linkage from jamming, the mounting point for the connecting bars should not be placed in line with the output bar's mounting hole's initial and final positions. See figure below.。
机械原理英文
机械原理英文Mechanical Principles。
Mechanical principles are the foundation of many engineering disciplines, including mechanical engineering, civil engineering, and aerospace engineering. Understanding these principles is essential for designing and analyzing various mechanical systems, from simple machines to complex industrial machinery. In this document, we will explore the key concepts of mechanical principles in English.First and foremost, one of the fundamental principlesin mechanical engineering is the concept of force. Force is a vector quantity that can cause an object to accelerate, decelerate, or change its direction. It is measured inunits of newtons (N) and is represented by arrows in diagrams. The direction of the force vector indicates the direction in which the force is acting, while the length of the arrow represents the magnitude of the force. Understanding the principles of force is crucial foranalyzing the behavior of mechanical systems under various loading conditions.Another important concept in mechanical principles is the study of motion. Motion is the change in position of an object over time and is described using parameters such as displacement, velocity, and acceleration. The laws of motion, as formulated by Sir Isaac Newton, provide the foundation for understanding the behavior of objects in motion. These laws, including the famous second law F=ma, are essential for analyzing the dynamics of mechanical systems and predicting their behavior under different operating conditions.In addition to force and motion, mechanical principles also encompass the study of energy and power. Energy is the ability to do work, and it exists in various forms such as kinetic energy, potential energy, and thermal energy. Understanding the principles of energy is essential for designing efficient mechanical systems and optimizing their performance. Power, on the other hand, is the rate at which work is done or energy is transferred, and it is a keyparameter in the design and operation of mechanical devices.Furthermore, the principles of mechanics also includethe study of materials and their mechanical properties. Materials play a crucial role in the design andconstruction of mechanical systems, and their behaviorunder different loading conditions is essential forensuring the safety and reliability of engineering structures. Understanding concepts such as stress, strain, and elasticity is essential for designing materials thatcan withstand the forces and loads they are subjected to in real-world applications.Moreover, mechanical principles also encompass thestudy of fluid mechanics, which deals with the behavior of fluids (liquids and gases) and the forces acting on them. Understanding the principles of fluid mechanics isessential for designing hydraulic and pneumatic systems, as well as for analyzing the behavior of fluids in various engineering applications.In conclusion, mechanical principles form the basis ofmechanical engineering and are essential for understanding the behavior of mechanical systems. By studying concepts such as force, motion, energy, materials, and fluid mechanics, engineers can design and analyze a wide range of mechanical devices and systems. These principles provide the foundation for solving engineering problems and developing innovative solutions to meet the challenges of the modern world. It is therefore essential for engineering students and practitioners to have a solid understanding of mechanical principles in order to excel in their careers.。
机械原理英文版7dynamic
Dynamic
Example in rolling steel material
Dynamic
work piece worktable
Gear rack
Given J1 J2 J2’ and J3 for gears, mass of worktable is M, pitch diameter of z3 is r3, determine the equivalent inertial Je at gear z1
Flywheels
Dynamic
Dynamic
盈功
gained work
a) In the gained case, the speed of system increases
max min
亏功
Loss work
b) In the case of loss work, the speed decreases
Flywheel inertial
90 Emax Is n2k
rpm
Dynamic
Dynamic
Automatic coupler 万向联轴节 a)There is angle between input shaft and output shaft b)If input velocity is uniform, output velocity will be uneven
3 cos i31 1 1 sin 2 cos 1
single universal joint
Dynamic
flutter
Dynamic
double universal coupler
Dynamic
ωc ω1 ω3
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
Characteristics:
(1) It is a composition of links.
（人为构件的组合体）
(2) There is a determined relative motion between links.
（各构件之间有确定的相对运动）
(3) It can transform or transmit energy.
15
References
8 . Erdman A. G., Sandor G. N., Mechanism Design: Analysis and Synthesis, Prentice-Hall International Inc, 1984 9*. Eckhand H. D., Kinematic Design of Machines and Mechanisms , McGraw-Hill, 1998 10*. Shigley J. E. and Uicker J.J. Theory of Machines and Mechanisms, McGraw-Hill, 2nd edition, 1995 11*. Norton R. L., Design of Machinery – An Introduction to the Synthesis and Analysis of Mechanisms and Machines, McGraw-Hill, 2nd edition, 2001 * 影印版，机械工业出版社，2002
（国际机构与机器理论联合会）
2. Kinematics and Dynamics
(High speed, precision, efficiency, etc.)
（高速，高精度，高效率等）
10
3. Robot（机器人）
(Manipulator, Parallel machine tool)
11
4.MEMS (um, nm)
2ቤተ መጻሕፍቲ ባይዱ
3. Concepts （概念）
1) Machine e.g. Internal combustion engine （内燃机）
3
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（齿轮） 5’ Inlet cam（吸汽凸轮） 5” Outlet cam（排汽凸轮） 6 Inlet valve（进汽阀） 7 Outlet valve（排汽阀）
2. Analysis and synthesis (design)
（分析与综合（设计））
3. Linkage, cam, gear, etc.
（连杆，凸轮，齿轮机构等）
9
0-3 Development of MMT （机械学发展状况） 1. IFToMM
(International Federation for Theory of Machines and Mechanisms)
16
（内部的结构, 运动, 动力特性） ◆ Machine: (external part)
Transformation of energy
（与外界的能量转换）
8
0-2 Study Content
（研究的内容）
1. Construction, kinematics, dynamics
（结构学，运动学，动力学）
Lecture 1
Mechanism and Machine Theory
（机械原理）
1
Introduction
（绪论）
0.1 Study Object（研究对象） 1. Definition（定义）
Mechanism and Machine Theory (MMT) = Theory of Machines and Mechanisms (TMM) （机械原理=机构和机器的理论） 2. Object（对象） Machinery = Mechanisms + Machines （机械） （机构） （机器）
: Machine tool
（工作机: 机床）
Internal combustion, electric motor
（原动机：内燃机,电动机）
6
2）Link—Motion element (rigid construction)
(构件---运动单元）
e.g. Crank 4+4’+4”; Gear 5+5’+5” Including: Driving (input) link （原动件）
（微机电系统）
微型飞行器
微卫星
微型汽车
12
5.CAD (VR) (计算机辅助设计，虚拟现实）
13
The roll of MMT
Basic courses
(基础课) Mathematics, Physics, Mechanics, etc.
Basic courses for specialty
(专业基础课)
Driven (output) link （从动件）
Frame（机架）
Different with:
Machine element—Manufacturing element
（机械零件 --- 制造单元）
e.g. Coupler 3: body, nut, bolt,…
7
3) Mechanism ●Definition: A composition of links that can accomplish determined motion. The difference between mechanism and machine is: Whether it transforms or transmits energy. ◆ Mechanism: (internal part) Construction, kinematics, dynamics properties
（它能进行能量的传递或转换）
☆ Machine:
It is a system of links that can accomplish determined motion and transform energy.
5
Classification
Two kinds of machine:
◆Working machine ◆Generator:
MMT Machine Element
Courses for specialty
(专业课)
Mechanical Design, Mechanical Manufacturing,…
14
References
1.王知行等，机械原理，北京：高等教育出版社，2000 2.邹慧君等，机械原理，北京：高等教育出版社，1999 3.郑文纬，吴克坚，机械原理（第七版），北京：高等 教育出版社，1997 4.孙桓等，机械原理（第六版），北京：高等教育出版 社，2001 5.申永胜等，机械原理教程，北京：清华大学出版社， 1999 6.申永胜等，机械原理辅导与习题，北京：清华大学出 版社，1999 7.上海交通大学机械原理教研室编，机械原理习题集， 北京：高等教育出版社，1985