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数控技术英语UnitPPT课件

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38759 数控专业英语

38759 数控专业英语

数控专业英语 ppt 课件
Machines may be programmed manually or with the aid of a computer. Manual prart programming; programming done by a computer is called computer aided programming (CAP). 机床可以手工编程或在计算机的帮助下编程。手工编程是 由人工完成的，而计算机辅助编程（CAP）是通过计算机完 成的. Sometimes a manual program is entered into the machine’s controller via its own keypad. This is known as manual data input (MDI). This text will focus on manual part programming. 还有大家熟知的手动数据输入方式（MDI），它是通过其 自带键盘，将程序输入到机床的控制器。本课将重点讲述手 工编程。
数控专业英语 ppt 课件
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. 计算机辅助编程语言是指，零件编程员应用一 套通用的“混杂英语”命令编写NC程序，然后由 计算机将其翻译成机器代码和制成穿孔带。 句中using a set of universal “pidgin English” commands是现在分词短语做状语，which引导的 非限制性定语从句修饰NC program。

数控英文课件Unit 22 Computer Graphics Programming

数控英文课件Unit 22 Computer Graphics Programming
sting part drawing, or defines the part geometry to the co
mputer. Next, the cutter path is drawn around the part an
d the necessary information on cut direction, tool, speeds
数字化是最简单的CAM方法之一，但也是精确度 最低的。零件的几何精度取决于数字化的按比例绘 图的精度，幸运的是，在使用三十倍或更大的样图 尺寸时，这个缺点已经变得微不足道了。
Scanning Systems扫描系统
Scanning systems use the part itself rather than a part draw ing to obtain the geometric database to machine the part. Sca nning is used when complex curves are to be machined which are difficult to draw and which do not fit a true mathematical model.
然后由后置处理器把这些信息转化成一个APT文 件，或者转化成一个刀具中心线数据文件。这些数 据然后通过另一个后置处理器输入，该后置处理器 为给定的机床生成需要的数控代码。
There are a number of different CAM systems on the market .The following is a brief explanation of several d ifferent types.
数字化系统是用现存的零件样图获得几何信息， 所使用的样图必须按零件的实际尺寸绘出来。按比 例绘制的样图被输入一个数字转换器，它连接着CA M系统的计算机。数字转换器由附带着探针或其它 传感器的工作台组成。

数控英文课件Unit 13 Types and Parts of Machining Centers

数控英文课件Unit 13 Types and Parts of Machining Centers

• Saddle—The saddle, which is mounted on the hardened and ground bedways, provides the machining center with the X-axis linear movement.
• 床鞍——床鞍装在淬火平导轨上，它为加工中心提 供X轴方向的直线运动。
动立柱型加工中心通常配有一个或两个工作台， 工件就安装在工作台上。在这种加工中心上可以 实现一边加工工件，一边把新工件装在另一个工 作台上。
The fixed-column type(Fig.13-2) is equipped with a pallet shuttle. The pallet is a removable table on which the workpiece is mounted.
固定立柱型加工中心上配有一个输送台滑台，这是一个 可移动工作台，工件就装于其上。
After the workpiece has been machined, the workpiece and pallet are moved to a shuttle which then rotates, bringing a new pallet and workpiece into position for machining.
• Column—The column, which is mounted to the saddle, is designed with high torsional strength to prevent distortion and deflection during machining. The column provides the machining center with the Y-axis linear movement.

数控英文课件Unit 14 Tool Monitoring and In-Process Gaging

数控英文课件Unit 14 Tool Monitoring and In-Process Gaging
A tool-monitoring system can be substituted for the skilled operator’s eyes and ears, signaling in a variety of ways when need to replace tools that are worn and broken. 机床监控系统可以代替熟练工人的眼睛和耳朵，在需要 替换磨损或破碎刀具时，以各种不同方式发出信号。 此句中，signaling ...是现在分词短语做状语，in a variety of ways是介词短语作状语修饰signaling，而the need 才是signaling的宾语 ; to replace tools 是不定式作定 语修饰need, 但that 又引导定语从句修饰tools.
当机床安装好准备加工工件时，使机床在装有新刀具的情 况下以全速和100%的编程进给率运行一个加工周期。
2.When the workpiece is completed, a second machining cycle is run, this time without contacting the workpiece.
从这两个加工周期中，机床监控系统可以 计算出程序中需要监控之处所需的净加工力 与净加工转矩。
net machining forces指“净加工力”，net machining forces指“净加have been set, the monitoring system will signal the operator when machining forces and torque exceed acceptable limits and, in some cases, automatically reduce the speed or feed to compensate for the dullness of the cutting tool.

中职 数控技术应用专业英语完整版课件全套ppt教程(最新)

中职 数控技术应用专业英语完整版课件全套ppt教程(最新)

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。
此句中包含两个定语从句，第一个从句的先行词是 machining process，in which引导从句the operations are
executed automatically in sequences as specified by the
1．Words 词汇
numerical control (NC) 数字控制 computer numerical control (CNC) 计算机数
字控制 advanced manufacturing technologies 先进制
造技术 Massachusetts Institute of Technology (M.I. T.)
because of the precision of the CNC machine and
lesser operator impact;
由于计算机数控机床的精度高，受操作 者影响小，废品率明显降低。
because of ：因为，由于……的原因 ③ It is easy to incorporate part design changes
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
2. Key Sentences 重点句子
① Since its introduction, NC technology has found many applications …

数控英文课件Unit 8 Servo Controls

数控英文课件Unit 8 Servo Controls
开环系统可比作一个射手，他做了所有必 要的计算来命中远距离目标，但是没有观察 者来确定目标是否射中。
The closed-loop system can be compared to the same gun crew that now has an observer to confirm the accuracy of the shot. The observer relays the information regarding the accuracy of the shot to the gun crew, which then makes the necessary adjustments to hit the target.
闭环系统也可比作一个射手，不同之处是 有一个观察者来确定目标是否射中，观察者将 命中的信息传递给射手，射手再做必要的调整 以射中目标。
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.

数控英文课件Unit 21 Spindle of CNC Machine Tools

degrees from the table surface. This angle will allow the
Machine Tool Spindles
The spindle is a very important and integrated component of different machine tools. Though the spindles are used in different fields and for different purposes, those which are used in machine tools are called machine tool spindles. They are rotating devices used to hold and act as axes for cutting tools or work-pieces on lathes, milling machine and different other machine tools.
在斜并受到推力的作用。
文中material removal rate是材料切削率的意思。 subject to……可译为“易受……影响”。
To ensure increased stability and minimize torsional strain, the machine spindle is designed to be short and stiff and the final drive to the spindle is located as near to the front bearing as possible.
主轴的旋转精度取决于所用轴承的设计和质量。 由于摩擦小、磨损率低、受校准不当的影响小、易 于替换等缘故，滚珠轴承、滚柱轴承适合于高速切 削及重载加工。

数控英文课件Unit 5 Elements of CNC Machine Tools

DPU用来处理工件程序中的数据并将结果输送 到CLU，而CLU则启动装在机床丝杠上的驱动器 并接受关于加工轴实际位置与进给速度的反馈信 号。
The CLU consists of the circuits for position and velocity control loops, deceleration and backlash takeup, function controls such as spindle on/off.
加工程序可手工编写，也可用像APT（自动编程 工具）这样的计算机辅助程序语言来编写。
Machine Control Unit (MCU)机床控制装置
The machine control unit (MCU) is a microcomputer that stores the program and executes the commands into actions by the machine tool. The MCU consists of two main units: the Data Processing Unit (DPU) and the Control Loops Unit (CLU). 机床控制装置（MCU）是一台微型计算机，其中存 有加工程序，机床通过执行程序指令来完成各种操作 。MCU主要由数据处理装置（DPU）、回路控制装 置（CLU）组成。
DPU软件包括控制系统软件、算法软件、翻译软件、 插补算法及程序编辑等，其中翻译软件可将加工程序 转换为MCU可用格式，插补算法可使刀具平稳运动。
句中，that converts the part program into a usable format for the MCU系定语从句，修饰translation software； translation software为“翻译软件”之意。

数控英文课件Unit 26 Flexible Machining System

machining or turning center. The automatic tool changing capability of these machines allows them to run untended, given the proper support system.
柔性制造系统中的主要部分是数控加工中 心或车削中心。如果配置适当支持系统，这 些机床的自动换刀功能就能使机床在无人管 理之下运行。
assembly robots, and part/tool transfer
vehicles.(Fig.26-1)
它完全是一个基于软件的全自动无人生产/ 装配线。一个柔性制造系统由四个主要部分组 成：数控机床、坐标测量机、零件处理与装配 机器人、零件/刀具运输装置。
The main element in an FMS is the CNC
mechanisms are employed to ensure correct placement and clamping of the part on the machine .All part handling must be accomplished in a specific orderly fashion, with coordination of the part transfer vehicle, the robot, and the CNC machines.
Tool monitoring systems built into CNC machine are used to detect and replace worn tools. The major obstacles in an FMS are not the machining centers but the support systems for the machines, such as part load/unload and part transfer.

数控英文课件Unit 27 Employment Opportunities in NC

A number of skilled positions have been created by num erical control. The most common jobs are NC electronics t echnician, machine operator/setup operator, and part progr ammer.
数控技术员在数字电子方面要很好地培训，还 要具有数控机床的使用周期及功能的知识。这类技 术员必须能维修机器，并能解决出现在各种数控机 床电子线路中的问题。
NC technicians generally acquire their skills through a two-year junior college program in digital electronics. Additional education in numerical control is often provi ded by the employer in the form of NC manufacturer’s t echnical school classes and seminars.
数控和计算机数控装置是连接机床的电器系统。 要使一台计算机数控机床实现功能，需要很复杂的 电子学知识。数控电子技术员是技术程度很高的技 术员，他主要从事数控设备的维护。
The NC technician must be well trained in digital elect ronics and possess a knowledge of the cycles and functio ns of NC machinery. The technician must be able to trou bleshoot and correct problems that occur in the electroni c circuitry of various NC machines.
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◦ 工程师B：对，这些指令是数字、字母和符号。
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Engineer C: Oh, don’t forget that machine-controlled units can understand the letters, numbers and symbols.
◦ 工程师C：噢，不要忘记机器控制单元能理 解这些字母、数字和符号。
◦ 丽莎邀请几位工程师向实习生解释数控。
Engineer A: NC system is operated by a series of coded instructions.
◦ 工程师A：数控系统是由一系列的编程指令操作的
Engineer B: Yes, these instructions are like numbers, letters and symbols.
Peter: Yes.
Mike: Nice to meet you. I’m Mike.
Peter: Nice to meet you, too. What do you do?
Mike: I’m a numerical control (NC) engineer.
Peter: Interesting. But what is NC?
在这里的实习。今天是你们在这里的第一天，有没有觉得兴奋？ 对于你们来说，数控是一门新技术。它是令人惊奇的。请跟我 来看看。
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Listen and divide
NC Technology ?
区分根据：编程指令+机械运动
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Read and write
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Listen and repeat
Lisa invites some engineers to explain NC to the interns.
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advantage /əd’vɑːntɪdʒ/ n. 优点 develop /dɪ‘veləp/ v. 发展 safety /’seɪfti/ n. 安全性 console /‘kɒnsəʊl/ n. 控制台 efficiency /ɪ‘fɪʃənsɪ/ n. 有效性 productivity /prɒdʌk’tiviti/ n. 生产率 accuracy /‘ækjurəsi/ n. 准确性 a series of 一系列的 be responsible for 对 …负责
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Introduction
Hello, everyone. Welcome to our company. I am Lisa. I’ll be responsible for your internship here. Today is your first day here, do you feel excited? Numerical control (NC) is a new technology to you. It’s amazing. Please follow 译m文：e大t家o好h。a欢v迎e来a到我lo们o公k司. 。我是丽莎。我将负责你们
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语法
主动语态：主语+vt. +宾语
◦ His son takes the photo.
Unit 1 Getting To Know Numerical Control
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Words and phrases
numerical /nju:’merikəl/ adj. 数字的 control /kən‘trəul/ v. 控制 company /’kʌmpəni/ n. 公司 internship /‘intəːnʃip/ n. 实习 technology /tek’nɒlədʒi/ n. 技术 amazing /ə‘meɪzɪŋ/ adj. 令人惊奇的 follow /’fɒləʊ/ v. 跟随 robot /‘rəʊbɒt/ n. 机器人 machine /mə’ʃiːn/ n. 机器
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number /‘nʌmbə/ n. 数字 symbol /’sɪmbl/ n. 符号 engineer /endʒɪ‘nɪə/ n. 工程师 intern /’ɪntɜːn/ n. 实习生 operate /‘ɒpəreɪt/ v. 操作 coded /’kəʊdɪd/ adj. 编码的 instruction /ɪn‘strʌkʃən/ n. 指令 automatic /ɔːtə‘mætɪk/ adj. 自动的 function /’fʌŋkʃn/ n. 功能 movement /‘muːvmənt/ n. 运动
数控技术英语
NC Technology English
唐观荣
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课程简介
教材：《数控技术英语》 课时：30课时 进度安排：一周一个单元 成绩组成：平时20%+期中30%+50% 教学目的：
◦ 掌握数控技术基本知识
◦ 掌握数控技术基本的英文表达 NC？
◦ 掌握一定的英语阅读能力
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第一单元 认识数控
Lisa: Thank you! Now we are clear that NC is automatic. It helps people a lot.
◦ 丽莎：谢谢！现在我们知道了数控是自动 的。它帮助人们很多。
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Listen and complete
Mike: Is your name Peter?
Mike: It is a technology of machine functions and
movements using coded instructions. (它是使用编程指令控制机器功能和运动的一种技术)
Peter: Great. Thank you.
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Text
数控技术的优点 数控技术为人们带来很多优点，所以数 控技术发展迅速。 安全性 数控系统是在远离加工区域的控 制台被控制的，所以操作者无需靠近运动的 机器部分。 有效性 一台数控机器不需要很多注意力。 操作者在机器运行时可以兼顾其他工作。 生产率 数控自动地控制所有机器运动， 所以产品能快速被生产出来。 准确性 所有零件都可被精确生产出来， 因为数控机器几乎不发生错误。