数控技术专业英语(第2版)：Unit 1 The History of CNC
史上最全数控技术专业英语词汇大全
史上最全数控技术专业英语词汇大全，赶紧收藏吧！2014-11-24金属加工1）计算机数值控制（Computerized Numerical Control, CNC）用计算机控制加工功能，实现数值控制。
2）轴（Axis）机床的部件可以沿着其作直线移动或回转运动的基准方向。
3）机床坐标系（Machine Coordinate Systern ）固定于机床上，以机床零点为基准的笛卡尔坐标系。
4）机床坐标原点（Machine Coordinate Origin ）机床坐标系的原点。
5）工件坐标系（Workpiece Coordinate System ）固定于工件上的笛卡尔坐标系6）工件坐标原点（Wrok-piexe Coordinate Origin）工件坐标系原点。
7）机床零点（Machine zero ）由机床制造商规定的机床原点。
8）参考位置（Reference Position ）机床启动用的沿着坐标轴上的一个固定点，它可以用机床坐标原点为参考基准9）绝对尺寸（Absolute Dimension）/绝对坐标值（Absolute Coordinates）距一坐标系原点的直线距离或角度。
10）增量尺寸（Incremental Dimension ）/增量坐标值（Incremental Coordinates）在一序列点的增量中，各点距前一点的距离或角度值。
11）最小输人增量（Least Input Increment）在加工程序中可以输人的最小增量单位。
12）命令增量（Least command Increment）从数值控制装置发出的命令坐标轴移动的最小增量单位。
13）插补（InterPolation）在所需的路径或轮廓线上的两个已知点间根据某一数学函数（例如：直线，圆弧或高阶函数）确定其多个中间点的位置坐标值的运算过程。
14）直线插补（Llne Interpolation）这是一种插补方式，在此方式中，两点间的插补沿着直线的点群来逼近，沿此直线控制刀具的运动。
数控技术应用专业英语课程标准精选全文完整版
可编辑修改精选全文完整版《数控技术专业英语》课程标准一、课程定位《数控技术专业英语》课程是数控技术、机电一体化、机械制造及其自动化专业的职业拓展课。
其作用是帮助学生学习专业英语的基本知识，了解数控技术方面的专业英语词汇，使学生能够阅读简单的英文文献，翻译简单的英文资料，能够用英语与外国技术人员做基本的技术交流。
本课程教学时间为一学期，学时为40学时，学分为2.5学分。
二、教学内容标准（课程总体方案设计）三、参考学时与学时分配四、评价方式本课程是职业拓展课，并且为考查课，以培养学生专业英语的阅读及翻译能力为主，同时注重培养口头表达与交流能力。
考核方法采用平时成绩与考试成绩综合评价的方法，平时成绩占50%，考试成绩占50%。
平时成绩结合学生出勤状况、课堂表现、笔记情况及作业情况综合给出；期末考试根据实际情况考试可采用开卷或闭卷方式，检验学生根据问题结合材料找出答案或解决方案的能力。
五、教学建议1．本课程的教学要不断摸索适合高职教育特点的教学方式。
采取灵活的教学方法，启发、诱导、因材施教，注意给学生更多的思维活动空间，发挥教与学两方面的积极性，提高教学质量和教学水平。
在规定的学时内，保证该标准的贯彻实施。
2．教学过程中，要从高职教育的目标出发，了解本专业对数控技术知识的需求，注意与有关课程相配合。
3．教学中要结合教学内容的特点，培养学生独立学习习惯，努力提高学生的自学能力和创新精神。
4．重视对学生学习方法的指导，鼓励学生积极运用网络等现代工具及时地、独立地完成课外作业。
5.教学中注重现代化教学手段的应用。
教学中向学生多多介绍该学科当前的主流技术和未来的发展趋势。
六、教材与教学参考书1．本课程教材选用由李桂云、冯艳宏主编的“十二五”国家规划高职教材《数控技术专业英语》，由大连理工大学出版社出版。
在实际使用时，允许教师结合实际课时对教学内容及教学形式予以适当调整。
2．教学参考书主要有:汤彩萍主编由电子工业出版社出版的《数控技术专业英语（第二版）》，2009年7月出版。
数控技术专业英文介绍范文
数控技术专业英文介绍范文Title: Introduction to CNC Technology Major.CNC (Computer Numerical Control) technology is a cutting-edge field that combines engineering, computer science, and manufacturing to revolutionize the way products are designed and produced. Students in the CNC Technology major learn how to program, operate, and maintain computer-controlled machines to create precision components and parts for various industries.Courses in the CNC Technology major cover topics such as CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing), CNC machining, tooling, and quality control. Students gain hands-on experience with CNC machines and software, enabling them to translate digital designs into physical products with high accuracy and efficiency.Graduates of the CNC Technology major are in high demand in industries such as aerospace, automotive, electronics, and medical device manufacturing. They have the skills and knowledge to work as CNC programmers, machinists, quality control specialists, and manufacturing engineers, contributing to the advancementof technology and innovation in manufacturing processes.By studying CNC Technology, students not only acquire technical skills but also develop problem-solving abilities, critical thinking, and attention to detail. This major prepares individuals for exciting and rewarding careers in the fast-paced world of advanced manufacturing.标题：数控技术专业介绍。
数控技术专业英语
二、重难点句 • Servo controls can be any group of electrical, hydraulic, or pneumatic devices which are used to control the position of machine tool slides. • In the open-loop system, the tape is fed into a tape reader which decodes the information punched on the tape and stores it briefly until the machine is ready to use it. The tape reader then converts the information into electrical pulses or signals. These signals are sent to the control unit, which energizes the servo control units. The servo control units direct the servomotors to perform certain functions according to the information supplied by the tape. The amount each servomotor will move depends upon the number of electrical pulses it receives from the servo control unit. • The closed-loop system is similar to the open-loop system with the exception that a feedback unit is introduced into the electrical circuit. This feedback unit, often called a transducer, compares the amount the machine table has been moved by the servomotor with the signal sent by the control unit. The control unit instructs the servomotor to make whatever adjustments are necessary until both the signal from the control unit and the one from the servo unit are equal.
《数控技术》双语 电子教案 Chapter 1
河南科技大学教案首页课程名称数控技术（双语）任课教师韩建海Chapter 1 Introduction to Numerical Control计划学时 6教学目的和要求：Through the study of this chapter ,students should grasp the basic concepts of NC, CNC ,NC machine tools and so on; understand the characteristics and main technical indicators of CNC machine tools; master the composition and classification of CNC machine tools; know the prospects of Numerical Control.重点：1. Basic Components and classification of NC machine tools.2. Application of NC machine tools.3. Prospects of Numerical Control.难点：1. Concept of interpolation．2. Control principle and composition of NC machine tools.思考题：1. What are the components of NC machine tool，and the function of eachcomponent?2. What is the Point-to-point control，contouring control NC machine tool?3. What is the open-loop control，half-closed-loop control and closed-loopcontrol NC machine ?4. What are the Advantages and Disadvantages of NC?5. What work parts are suited for machining by NC machine?内容提要This chapter introduces the basic concepts of the numerical control technology and NC machine tools; components of CNC machine tools; characteristics of CNC machining; Control principle and classification of CNC machine tools; scope of application of CNC machine tools; history and prospects of NC technology and NC machine tools.Chapter 1 Introduction to Numerical Control1.1 FUNDAMENTALS OF NC TECHNOLOGY1.1.1 Development History of NCThe concept for NC dates from the late 1940s．The numerical data was stored in the punched cards．The first NC machine was developed in 1952．MIT met the challenge successfully，and in 1952 demonstrated a Cincinnati Hydrotel milling machine equipped with the new technology，which was named Numerical control(NC)and used a pre-punched tape as the input media．Since 1952，practically every machine tool manufacturer in the Western world has converted part or its entire product to NC．The first NC machines used vacuum tubes，electrical relays，and complicated machine control interfaces(1952)．The second generation of machines utilized improved miniature electronic tubes(1959)，and later small scale integrated circuits(1965)．As computer technology improved，NC underwent one of the most rapid changes known in history．The fourth generation used much improved integratedcircuit(1970s)．The fifth generation is microprocessor CNC(1980s)．Among the strengths of the fifth generation microprocessor CNC (MCNC)are added part program memory storage，reduction of printed circuit boards，programmable interface，faster memory access，parametric subroutines，and macro capabilities．1.1.2 Concept of NC and CNCNumerical control (NC) is a form of programmable automation in which the mechanical actions of a machine tool or other equipment are controlled by a program containing coded alphanumeric data．The capability to change the program makes NC suitable for low and medium production．It is much easier to write new programs than to make major alterations of the processing equipment．Numerically controlled(NC)machine tools were developed to fulfill the contour machining requirements of complex aircraft parts and forming dies．The first-generation numerically controlled units used digital electronic circuits and did not contain any actual central processing unit；thereby they were called NC or hardwired NC machine tools．In 1970s，computer numericallycontrolled(CNC)machine tools were developed with minicomputers used as control units．With the advances in electronics and computer technology，current CNC systems employed several high-performance microprocessors and programmablelogical controllers that work in a parallel and coordinated fashion．Current CNC systems allow simultaneous servo position and velocity control of all the axis，monitoring of controller and machine tool performance，online part programming with graphical assistance，in-process cutting process monitoring，and in-process part gauging for completely unmanned machining operations． Manufacturers offer most of these features as options．Today，virtually all the new machine control units are based on computer technology；hence，when we refer to NC in chapter and elsewhere, we mean CNC．1.1.3 Basic Components of NC Machine Tools1.The work process of NC .2.A typical NC machine tool has five fundamental units：(1)the input media，(2)the machine control unit，(3)the servo-drive unit，(4)the feedback transducer，and(5)the mechanical machine tool unit．The general relationship among the five components is illustrated in Figure 1.2．(1) The input media contains the program. of instructions，it is the detailed step-by-step commands that direct the actions of the machine tool；the program of instructions is called a part program. The individual commands refer to positions of a cutting tool relative to the worktable on which the work part is fixtured . Additional instructions are usually included, such as spindle speed , feed rate, cutting tool selection, and other functions．The program is coded on a suitable medium for submission to the machine control unit．For many years，the common medium was 1-inch wide punched tape，using a standard format that could be interpreted by the machine control unit．Today，punched tape has largely been replaced by newer storage technologies in modern machine shops．These technologies include magnetic tape，diskette，and electronic transfer of part programs from a computer．(2) In modern CNC technology，the machine control unit(MCU)consists of a microcomputer and related control hardware that stores the program of instructions and executes it by controlling each command into mechanical actions of machinetool，one command at a time．The MCU includes system software，calculation algorithm，and transition software to covert the NC parts program into a usable format for the MCU．(3) The third basic component of an NC system is the servo-drive unit；the drives in machine tools are classified as spindle and feed drive mechanisms．Spindle and feed drive motors and the。
数控技术专业英文介绍范文
数控技术专业英文介绍范文English: The CNC technology major is designed to train students in the principles and practical skills of computer numerical control (CNC) machining. Students will learn how to use computer programs to control and operate machines such as lathes, milling machines, and grinders to produce precision parts and components. They will also study topics such as machining strategies, tooling selection, blueprint reading, and quality control. In addition to hands-on experience in CNC programming and machine operation, students will also receive training in CAD/CAM software, CNC equipment maintenance, and troubleshooting techniques. Graduates of this program will be well-equipped to pursue careers in industries such as aerospace, automotive, medical device manufacturing, and more, where precision machining is essential for producing high-quality products.中文翻译: 数控技术专业旨在培养学生掌握计算机数控（CNC）加工的原理和实践技能。
数控技术专业英语(数控)Unit1
3．For machine tool control: (1) point-to-point tool movements, (2) continuous-path (or contouring) tool movements.
4．For tool positioning modes/programming: (1) incremental positioning mode, (2) absolute positioning mode, (3) diameter programming, (4) radius programming. 5．For servo control systems: (1) open-loop control system, (2) closed-loop control system.
They can be played back，edited，and processed by the controller．All programs resided in RAM，however， are lost when the CNC machine is turned off．These programs can be saved on auxiliary storage devices such as punched tape，magnetic tape，or magnetic disk. The MCU units have graphics screens that can display not only the CNC program but also the cutter paths generated and any errors in the program.
NC technology has found many applications, including lathes, and turning centers, milling machines and machining centers, punches, electrical discharge machines (EDM), flame cutters, grinders, and testing and inspection equipments. The most complex CNC machine tools are the turning center with a ten-station turret that accepts quick-change tools, the vertical machining center that the tool magazine is on the left of the machine and horizontal machining center equipped with an automatic tool changer, shown in Figure 1-1 and Figure 1-2 respectively. Generally speaking, tool magazines can store 200 cutting tools.
(最新整理)数控专业英语
decisions on advancing in an all-round manner the
reform and opening up program and socialist
modernization drive. A series of historic changes
have taken place in China's economic and social
程序调试过程中给操作者提供了修调 快进速度的方法。override在普通英语 中是“践踏，代理佣金”的意思，而 在数控技术中常常指“倍率，修调” 的意思。
像这样的专业词汇很多，只有通过大量 2021/7/26识记和阅读本专业文献，才能很好的掌握。6
❖ 广泛使用被动语句： ❖ 科技英语中的谓语至少三分之一是被动语态。
automobile show 车展
cf. car 常用在口语中
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4. solid n.固体 Butter is a solid.
5. lubricate v. 给…上润滑油，使润滑 lubricate the wheels, bearings, hinges lubricant n. 润滑油，润滑剂
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Ⅱ.New Words
1. programmer n. 编程员
program n. & v. 程序
The computer has been programmed.
2. autoloader n. 自动装卸装置
auto pref. 自动的； load v. 装卸
3. automobile n. 汽车
❖ We can store electrical energy in two metal
数控英文课件Unit 1 History of NC
In simple terms, a numerical control machine is a machine
positioned automatically along a preprogrammed path by means of coded instructions. The key words here are “preprogrammed” and “coded”.
1947年，Parsons公司的John Parsons进行了一项 试验，想用空间数据来控制机床运动，以生产飞行 器部件。1949年，Parsons公司与美国空军签订了制 造第一台数控机床的合同。
在机床能够运行之前，操作者必须确定这台机床 完成什么工作，并且将此信息译成数字控制装置可 以识别的代码形式，也就是说，操作者必须对机床 进行编程。
主句中Someone做主语，指代Operator；由and连 接的determine和put是两个并列谓语，其中what…… 引导determine的宾语从句，that……引导form的定语 从句；时间状语从句由before引导。
微电子学和微型电脑的发展已经使计算机应用于现代数控机床 的控制装置，并取代了早期用于NC机床的读带机。
In other words, instead of reading and executing the program directly from punched tape, the program is loaded into and executed from the machine’s computer. These machines, known as computer numerical control (CNC) machines, are the NC machines being manufactured today.
数控技术(双语)
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Chapter1 Introduction to numerical control Interpolation
机械工程学院
数控技术（双语）
Numerical Control Technology
董长双
2013.7 1
Chapter1 Introduction to numerical control
1.1 Fundamentals of NC technology 1.1.1 Development history of NC
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Chapter1 Introduction to numerical control
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Chapter1 Introduction to numerical control
1.1.3 Basic component of NC machine tools
The work process of NC
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Chapter1 Introduction to numerical control
1.2.2 Types of NC servo-drive system
1. Open-loop servo drive
CNC 插补指令
脉冲频率f 脉冲个数n
换算
f、n
脉冲环 形分配
变换
A相、B相 功率 放大
C相、…
turning, drilling, milling, grinding NC lathe, NC boring mill, NC drill press, NC milling machine, NC grinding machine, machine center. Multifunction NC machines with automatic tool changer and tool storage. 2. Non-machine tool application Punch press, sheet metal bending, welding machine, thermal cutting machine ( oxfuel cutting, laser cutting, plasma arc cutting), tube bending machine.
数控技术数控编程外文翻译、中英文翻译、外文文献翻译
原文：NC and CNCThe History of NC and CNC DevelopmentNumerical Control (NC) is any machining process in which the operations are executed automatically in sequences as specified by the program that contains the information for the tool movements. The NC concept was proposed in the late 1940s by John Parsons of Traverse City, Michigan. Parsons recommended a method of automatic machine control that would guide a milling cutter to produce a "thru-axis curve" in order to generate smooth profiles on work pieces.In 1949, The U.S. Air Force awarded Parsons a contract to develop a new type of machine tool that would be able to speed up production methods. Parsons commissioned the Massachusetts Institute of Technology (M.I.T.) to develop a practical implementation of his concept. Scientists and engineers at M.I.T. built a control system for a two-axis milling machine that used a perforated paper tape as the input media. In a short period of time, all major machine tool manufacturers were producing some machines with NC, but it was not until the late 1970s that computer-based NC became widely used. NC matured as an automation technology when inexpensive and powerful microprocessors replaced hard-wire logic-making computer-based NC systems.When Numerical Control is performed under computer supervision, it is called Computer Numerical Control (CNC). Computers are the control units of CNC machines, they are built in or linked to the machines via communications channels. When a programmer input some information in the program by tape and so on, the computer calculates all necessary data to get the job done.On the first Numerically Controlled (NC) machines were controlled by tape, and because of that, the NC systems were known as tape-controlled machines. They were able to control a single operation entered into the machine by punched or magnetic tape. There was no possibility of editing the program on the machine. To change the program, a new tape had to be made.Today's systems have computers to control data; they are called Computer Numerically Controlled (CNC) machines. For both NC and CNC systems, workprinciples are the same. Only the way in which the execution is controlled is different. Normally, new systems are faster, more powerful, and more versatileThe Applications of NC/CNCSince its introduction, NC technology has found many applications, including lathes and turning Centers, milling machines and machining centers , punches , electrical discharg machines(EDM) Flame cutters,grinders,and inspection equipment. the most complex CNC machine tools are the turning center,shown in Fig.4-1(Amodern turning center with a ten-station turret that accepts quick-chang tools.Each tool can be positioned in Seconds with the press of a button).And the machine center shown in Fig.4-2(Vertical machining center,the tool magazine is on the machine.the control panel on the right can be swiveled by the operator)and Fig.4-3(horizontal machining center,equipped with an automatic tool changer .tool magazines can store 200 ctting tools.When preparing a progam for a particular operation ,the prommer must select all cutting data using recommendations for conventional machining .this includes proper Selection of cutting speeds,feedrate,tools and tool geometry,and so on.when the programmer has chosen all of the necessary information properly,the operator loads the programme into the machine and presses a button to start the cutting crycle .the CNC machine moves automatically from one maching operation to another , changing the cutting tols and applying the coolent.in a surprisingly short time ,the workpiece is Machined according to the highest quality stangards. But that is not all.no matter how big the work series is,all of the parts will be almost identical in size and surface finishing. At this time of advanced technology,with its high demands for surface finishing and tolerances of components in,for example ,aerospace,nuclear,and medical equipment manufacturing,only CNC machines provide successful results.Numerical control (NC) is a form of programmable automation in which the processing equipment is controlled by means of numbers, letters, and other symbols. The numbers, letters, and symbols are coded in an appropriate format to define a program of instructions for a particular workpart or job. The instructions are provided by either of the two binary coded decimal systems: the Electronic Industries Association (EIA) code, or the American Standard Code for Information Interchange(ASCII). ASCII-coded machine control units will not accept . EIA coded instructions and vice versa. Increasingly, however, control units are being made to accept instructions in either code. 121Automation operation by NC is readily adaptable to the operation of all metalworking machines. Lathes, milling machines, drill presses, boring machines, grinding machines, turret punches, flame or wire-cutting and welding machines, and even pipe benders are available with numerical controls.Basic Components of NCA numerical control system consists of the following three basic components:(1) Program instructions(2) Machine control unit(3) Processing equipmentThe program instructions are the detailed step by step commands that direct the processing equipment. [31In its most common form, the commands refer to positions of a machine tool spindle with respect to the worktable on which the part is fixtured. More advanced instructions include selection of spindle speeds, cutting tools, and other functions.The machine control unit (MCU) consists of the electronics and control hardware that reads and interprets the program of instructions and convert it into mechanical actions of the machine tool or other processing equipment.The processing equipment is the component that performs metal process. In the most common example of numerical control, it is used to perform machining operations. The process-ing equipment consists of the worktable and spindle as well as the motors and controls needed to drive them.Types of NCThere are two basic types of numerical control systems: point to point and contouring.Point to point control system, also called positioning, is simpler than contouring control system. Its primary purpose is to move a tool or workpiece from one programmed point to another. Usually the machine function, such as a drilling operation, is also activated at each point by command from the NC program. Point to point systems are suitable for hole machining operations such as drilling,countersinking, couterbofing, reaming, boring and tapping. Hole punching machines, spotwelding machines, and assembly machines also use point to point NC systems.Contouring system, also known as the continuous path system, positioning and cutting operations are both along controlled paths but at different velocities. Because the tool cuts as it travels along a prescribed path, accurate control and synchronization of velocities and movements are important. The contouring system is used on lathes, milling machines, grinders,incrementally, by one of several basic methods. There are a number of interpolation schemes that have been developed to deal with the various problems that are encountered in generating a smooth continuous path with a contouring type NC system. They include linear interpolation,circular interpolation, helical interpolation, parabolic interpolation and cubic interpolation. In all interpolations, the path controlled is that of the center of rotation of the tool. Compensation for different tools, different diameter tools, or tools wear during machining, can be made in the NC .Programming for NCA program for numerical control consists of a sequence of directions that causes an NC machine to carry out a certain operation, machining being the most commonly used process. Programming for NC may be done by an internal programming department, on the shop floor, or purchased from an outside source. Also, programming may be done manually or with computer assistance.The program contains instructions and commands. Geometric instructions pertain to relative movements between the tool and the workpiece. Processing instructions pertain to spindle speeds, feeds, tools, and so on. Travel instructions pertain to the type of interpolation and slow or rapid movements of the tool or worktable. Switching commands pertain to on/off position for coolant supplies, spindle rotation, direction of spindle rotation, tool changes, workpiece feeding, clamping, and so on. The first NC programming language was developed by MIT developmental work on NC programming systems in the late 1950s and called APT(Automatically Programmed Tools).DNC and CNCThe development of numerical control was a significant achievement in batchand job shop manufacturing, from both a technological and a commercial viewpoint. There have been two enhancements and extensions of NC technology, including:(1)Direct numerical control(2) Computer numerical controlDirect numerical control can be defined as a manufacturing system in which a number of machines are controlled by a computer through direct connection and in real time. The tape reader is omitted in DNC, thus relieving the system of its least reliable component. Instead of using the tape reader, the part program is transmitted to the machine tool directly from the computer memory. In principle, one computer can be used to control more than 100 separate machines. (One commercial DNC system during the 1970s boasted a control capability of up to 256 machine tools.) The DNC computer is designed to provide instructions to each machine tool on demand. When the machine needs control commands, they are communicated to it immediately.Since the introduction of DNC, there have been dramatic advances in computer technology. The physical size and cost of a digital computer has been significantly reduced at the same time that its computational capabilities have been substantially increased. In numerical control, the result of these advances has been that the large hard-wired MCUs of conventionalNC have been replaced by control units based on the digital computer. Initially, minicomputers were utilized in the early 1970s. As further miniaturization occurred in computers, minicomputers were replaced by today's microcomputers.Computer numerical control is an NC system using dedicated microcomputer as the machine control unit. Because a digital computer is used in both CNC and DNC, it is appropriate to distinguish between the two types of system. There are three principal differences:1) DNC computers distribute instructional data to, and collect data from, a large number of machines. CNC computers control only one machine, or a small number of machines.2) DNC computers occupy a location that is typically remote from the machines under their control. CNC computer are located very near their machine tools.3) DNC software is developed not only to control individual pieces of production equipment, but also to serve as part of a management information system in the manufacturing sector of the firm. CNC software is developed to augment the capabilities of a particular machine Tool.译文：数控技术数字控制与计算机数字控制的发展历史数字控制是按照含有机床(刀具)运动信息程序所指定的顺序自动执行操作的加工过程。
数控技术- 英文
Computerized Numerical Control (CNC)Course title: Computerized Numerical Control (CNC)Code:Credit: 2Lecture Hours: 24OverviewThis course is a compulsory course for students majoring in Mechanical Engineering and Automation. It aims to help students apply the basic operating principle and its application to solve the problems of design and application of CNC machine tool in practical manufacturing. This course provides students with an understanding of the characteristics and classification of CNC device, CNC programming for machining, the interpolation principle and mechanical structure and design of CNC machine tool. Meanwhile, it also strengthens their awareness of the structure of CNC system, servo feeding system and surveying device of CNC machine tool as well as its development and other application fields.Aims and ObjectivesThis course mainly explores technical transformation of CNC machine tools and relevant knowledge of mechanism, electronics and computer technology required by the application of CNC machine tools. On successful completion of this course, students should be able to:*have a positive attitude and develop a critical thinking;*enhance their professional ethics and ability;*link theory with practice and their major;*develop their vocational interest, tough character, good communication skill, team spirit and problem-solving ability;*master the characteristics and classification of CNC device, CNC programming for machining, the interpolation principle and mechanical structure and design of CNC machine tool.*keep abreast of current CNC development and other application fields.Syllabus and Schedule of LecturesTheoretical Teaching:Chapter 1 Introduction1.1 An Introduction of CNC Machine Tool and Its Classification1.2 The Origin and Development of CNC Machine Tool1.3 FMC, FMS and CIMSChapter 2 Programming of CNC Machining2.1 Basis of CNC Programming2.2 Manual Programming2.3 An Introduction of Automatic Programming of CNC MachiningChapter 3 CNC Device and Its Interface3.1 The Hardware Structure of CNC Device3.2 The Software Structure of CNC Device3.3 PLC and Interface Circuit of CNC DeviceChapter 4 Interpolation, Cutter Compensation and Speed Control4.1 Interpolation Principle and Programming4.2 Cutter Radius Compensation, Feed Speed and Acceleration and Deceleration ControlChapter 5 Servo-drive System5.1 Surveying Device, Stepper Motor and Its Driving System5.2 Direct Current Servomotor and Its Speed Control5.3 Alternating Current Servomotor and Its Speed Control5.4 Spindle Drive and Position ControlChapter 6 An Introduction to the Cases of CNC System6.1 An Introduction of Economical CNC System6.2 Advanced Economical CNC System6.3 An Introduction of High-class CNC SystemPractical Training (12 Hours)PrerequisitesElectrical Engineering and Electronic Technique, Programmable Logic Controller (PLC), Basis of Control Engineering, The Test Sensor Technology, Principle of Mechanical Manufacturing Engineering, etc.TextbookDong, Yuhong. Computerized Numerical Control (CNC) (2nd ed.). Higher Education Press, 2012.AssessmentsAssignment (including group work, experiment report, homework and attendance)30% Examination 70%。
数控技术 专业 英语
数控技术专业英语With the rapid development of manufacturing technology, the demand for CNC (Computer Numerical Control) professionals has been increasing steadily. The application of CNC technology is becoming increasingly widespread, and CNC programming has become an essential part for the manufacturing industry. When it comes to the study of CNC technology, professionals must master the relevant technical vocabulary in English, as it is often used as the adaptation language in the field. Therefore, it is imperative to learn CNC-related terminology in English, especially for those who specialize in this field.The study of CNC technology in English covers a broad range of topics. In this article, we will narrow our focus to the following areas:1. Introduction to CNC TechnologyCNC technology is the process of using computers to automate machine tools. The CNC machine tool cuts or carves away material from raw stocks to create a finished product.It is used in a variety of industries, including aerospace, automotive, precision engineering and medical devices. Before understanding CNC technology and its applications, it is necessary to understand basic CNC terminology such as axis, coordinates, program, tool path, and so on.2. CNC ProgrammingProgramming is an essential part of CNC technology. A fundamental understanding of the syntax, parameters, and syntax used to create CNC programs is vital. CNC programs aregenerally written in G-code, which is a form of machine code that a CNC machine tool can understand. The CNC programs are used to direct the CNC machine tool for cutting or carving actions.3. CNC Machining CentersCNC machining centers are automated machine tools that can perform complex machining operations. Machining operations include drilling, milling, grinding, and turning.A CNC machining center employs a variety of tools such as drills, saws, and lathes to perform various tasks. A skilled CNC operator must have a comprehensive knowledge of the various types of CNC machining centers and an in-depth understanding of the proper application of such centers.4. Industrial Robotics in CNC TechnologyIndustrial robots are revolutionizing CNC technology. They are used in CNC manufacturing to perform repetitive tasks quickly and accurately. Industrial robots are used in various CNC operations such as deburring, welding, drilling, and painting. It is important to understand the programming and functionality of the robots to ensure efficient and safe operations.In conclusion, CNC technology is a vast and exciting field that requires a sound understanding of technical vocabulary. However, mastering the English language is essential for professionals specializing in CNC technology. With this knowledge, professionals will gain a higher level of competency, perform their responsibilities effectively and expand their career opportunities in this fast-growing industry.。
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numerical control, actually refers to the control of a machine tool or any other processing machines by using a series of mathematical information, or numerical data. It means the work of machines is controlled by a numerical control program.
Mary: But what do you mean by overall operation?
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Smith: Uh-huh, by it we mean the general industrial production practice. For example, NC should be adopted whenever there is similar raw material and work parts are produced in various sizes and complex shapes. Those production shops that may have frequent changeovers will surely benefit from NC progr (to Prof. Smith) Excuse me, sir, I’m Tom, one of your students in this class. Could I ask you some questions?
Smith: (to Tom) Why not? Come on, then Tom: Why do we name these machines numerical control
Unit One
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Topical Introduction: Tom and Mary have now just finished a class given by Professor Smith on the workings of the machine tools. Yet, they still have some questions, and so, they walk over to Prof. Smith.
Tom & Mary: Thank you Prof. Smith, NC sounds really promising from what we say.
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The History of CNC and NC Development
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Numerical Control (NC) is any machining process in which the operations are executed automatically in sequences as specified by the program that contains the information for the tool movements. The NC concept was proposed in the late 1940s by John Parsons of Traverse City, Michigan. Parsons recommended a method of automatic machine control that would guide a milling cutter to produce a “thru-axis curve” in order to generate smooth profiles on work pieces.
Smith: In some ways, yes. A good example is some fine works, like a jade box, but the qualities of hand-made products may not be consistent or stable. What is more important, NC has proved to be much more advantageous in overall operation.
Tom: Thank you, Prof. Smith, but I have another question. How can we use NC to get more satisfactory results in the real production?
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Smith: It’s better to use NC tools together with other technical advances, such as programmed optimization of cutting speeds and feeds, work positioning, tool selection, and chip disposal.
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Mary: Oh, Prof. Smith, the idea is nice enough. But what is the advantage of numerical control machining over the hand control? Isn’t our hand more sensible or reliable than the programmed data?