数控技术专业英语(第2版)：Unit 3 NC Programming
中职 数控技术应用专业英语完整版课件全套ppt教程(最新)
strip v．剥去
deviate v．偏离
deviation n．偏差
parabolic n．抛物面 adj. 抛物面的 panel n．方格 verify v．检验，鉴定，验证 agree v．相同，符合，一致
1．Words 词汇
assembly n. 装配，组装件，集合 in general 一般地 consist v. 包括，组成 binary adj. 二进制的 impulse n. 脉冲 sensing n. 传感器 graduate n. 刻度
servomotor n. 伺服电机 tool path 刀具路径 minicomputer n. 微型计算机 tedious adj. 繁琐的 intersection n. 交点 processor n. 处理器 feed back 反馈 discrepancies n. 偏差 transducer n. 传感器 DC (direct current) 直流 AC (alternative current) 交流
when CAD/CAM systems are used; 采用 CAD/CAM 系统后，对零部件装配设
计的修改就变得很容易。
此句中 it 作形式主语，真正的主语是“to incorporate part design changes”。
Lesson 4 The Construction of CNC Machines
1．Words 词汇
advantage n. 优点 disadvantage n. 缺点 perform v. 执行 multiple adj. 多个 simultaneous adj. 联动
conventional adj. 传统的 set up 安装 special profile tools 成形刀具 precision n. 精度 scrap n. 废品 CAD（computer aided design） 计算机辅助设计 CAM（computer aided manufacturing）计算机辅
《数控技术应用专业实用英语》电子教案 Unit 3 U3,L1
Whatis a CNC machine mainly made up of?
▲1. The teacher reads the whole text.
.
1.headstock___________________
2.chuck___________________
3.turret___________________
4.carriage___________________
5.tailstock___________________
C___________________
chcku------chuck
ent turr-----turrent
rrcaiage-----carriage
stocktail-----tailstock
cesspro----process
II.组成句子
1)the spindle /The chuck/is connected with
The chuckis connected withthe spindle.
▲The teacherasks some questions andtellsthestudents toanswer the questions in detailaccording to thetextto see how much they’ve understood.
▲Coping with the difficult points
Your foot will change direction. . . . . . and there's nothing you can do about it!
最新数控技术双语2
Chapter 2 NC Part Programming
Electromechanical Engineering College Henan Universi_t_y___o__f__S___c__i_e__n__c__e____a__n__d_ Technology
______________________________ ____________________
Chapter 2 NC PART PROGRAMMING
2.1、Introduction
to
.
NC
part
programming
The program of instructions is the detailed step-bystep commands that direct the actions of the processing equipment. In machine tool applications, the program of instructions is called a part program, and the person who prepares the program is called a part programmer.
Numerical control (NC) is a form of automatically operating a machine tool based on coded alphanumeric data. A complete set of coded instructions for executing an operation is called a program. The program is translated into corresponding electrical signals for input to servo motors that run the machine.
《数控技术应用专业英语》(第二版)课件 (8)
数控技术应用专业英语
大连理工大学出版社
1.The General of Sinker EDM
（1）The basic principle of sinker EDM （1）电火花成型加工原理 Sinker electrical discharge machining（sinker EDM），
数控技术应用专业英语
大连理工大学出版社
数控技术应用专业英语
大连理工大学出版社 李桂云 冯艳宏主编
数控技术应用专业英语
大连理工大学出版社
Learning Situation 3 CNC Electrical Discharge Machining
Task 1 CNC Sinker EDM Machine
also known as Die -Sinker EDM and Die -EDM， is that the electrode and workpiece are separately connected to the two poles of pulse power supply， the pulse power supply generates an electrical potential between the two parts. 电火花成型加工（Sinker EDM）也被 称为Die -Sinker EDM和Die -EDM，是 将电极和工件分别连接到脉冲电源的两
这种不间断的脉冲放电将电极的形状复制到 工件上以实现成型加工。
数控技术应用专业英语
大连理工大学出版社
1.The General of Sinker EDM
（2）Characteristics of sinker EDM （2）电火花成型加工特点 Some of the advantages of sinker EDM include: 电火花成型加工的优点有: ·Complex shapes that would otherwise be difficult to
数控技术专业英语
• 将……扩展成 expand…..into • 焊接 welding • 汽车工业 automotive industry • 器具, 器械, 装置，（家用）电器 appliance • 模具 die • 原始设备制造商 OEM original equipment manufacturer • 立式铣床 Vertical milling machine • 原型 Prototype • 快速原型制造 Rapid prototyping manufacturing • 弯曲 Bending 冲压 Stamping
• 夹具 四、练习
Unit 8 servo controls
一、专业词汇 • 伺服控制 Servo control • 液压的 Hydraulic • 气压的 Pneumatic • 开环系统 Open-loop system • 闭环系统 closed-loop system • 伺服电机 Servomotor • 步进电机 stepper motor; stepping motor • 直流电机 DC (direct current) motor
二、重难点句 • A numerical control machine is a machine positioned automatically along a preprogrammed path by means of coded instructions. • Advances in microelectronics and microcomputers have allowed the computer to be used as the control unit on modern numerical control machinery. • Computer aided programming languages allowed a part programmer to develop an NC program using a set of universal “pidgin English” commands, which the computer then translated into machine codes and punched into the tape. • Direct numerical control involved using a computer as a partial or complete controller of one or more numerical control machines. • Distributive numerical control employs a network of computers to coordinate the operation of a number of CNC machines. Ultimately, it may be possible to coordinate an entire factory in this manner.
数控英文课件Unit 3 Advantages of NC
⑻Machine utilization time is increased. There is less time that a machine tool is idle because workpiece and tool changes are rapid and automatic.
and productive results. NC technology has made such
rapid advances that it is been used in almost every area of
manufacturing, such as machining, welding, press-
⑹Tooling costs are reduced. In most cases complex jigs and fixtures are not required.
工具的花费减少了。在多数情况下，不再需要复杂的夹具。
⑺Inspection and assembly costs are lower. The quality of the product is improved, reducing the need for inspection and ensuring that parts fit as required.
where the future of manufacturing lies, and considering
the developments of the past, it will not be too far in the
future before the automated factory is a reality.
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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The relative movement between tools and workpieces is achieved by the motion of the machine tool slides. The three main axes of motion are referred to as the X, Y, and Z axes. The Z axis is perpendicular to both the X and Y axes in order to create a right-hand coordinate system, as shown in Fig.3-1. A positive motion in the Z direction moves the cutting tool away from the workpiece2. This is detailed as follows:
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Dialogue
Tom: Oh, it’s really wonderful. But could I ask a question? Why is it not very bright in the workshop? It seems very dark inside, doesn’t it?
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1. z AXIS
(1) On a workpiece-rotating machine, such as a lathe, the Z axis is parallel to the spindle, and the positive motion moves the tool away from the workpiece. (Fig.3-1)
Unit Supplementary Reading Translating Skills (III)
Dialogue
Topical Introduction: Tom and Mary are now paying a visit to an automatic factory. They are listening to the introduction given by a girl guide.
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Fig.3-1
Mary: Oh, very nice. But how could all the various systems be made to work together?
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Dialogue
Guide: It is the main computer in the control center and all the other computers in the different shops that unite all the various systems together.
Tom: Oh, I see. It sounds fantastic.
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NC programming Coordinate System for NC Machines
In an NC system, each axis of motion is equipped with a separate driving source that replaces the hand wheel of the conventional machine. The driving source can be DC motor, a stepping motor, or a hydraulic actuator. The source selected is determined mainly based on the precision requirements of the machine1.
Guide: Ladies and gentlemen, welcome to our factory. This factory, perhaps you can see, is not an ordinary factory, but a totally automatic factory. So here you can see there are no people working at all. All the parts are made by automatic machines. All materials are moved by automatic materialshanding equipment. All assembly work is also done on an automatic assembly line. Even the equality control is also checked automatically.
(2) On a tool-rotating machine, such as a milling or boring machine, the Z axis is perpendicular to the tool set, and the positive motion moves the tool away from the workpiece (Fig32 and Fig 3-3).