中职-数控技术应用专业英语完整版课件全套ppt教程.ppt

数控技术应用专业英语数控技术应用专业英语ContentsUNIT 1 Computer Numerical Control of Machine tools UNIT 2 Numerical Control Technology Applications UNIT 3 Introduction to The CNC Lathe UNIT 4 Techniques for CNC Lathe Programming UNIT 5 NC Programming UNIT 6 Modern Computer-aided Part Programming UNIT 7 NC Machine OperationUNIT 8 MechatronicsnUNIT 1 Computer Numerical Control of Machine toolsn n教教教教学学学学目目目目的的的的：使使学学生生掌掌握握数数控控技技术术的的发发展展及及其其基本知识相关英语词汇以及主要用法基本知识相关英语词汇以及主要用法n n教学重点教学重点教学重点教学重点：数控技术的有关知识及相关英语：数控技术的有关知识及相关英语词汇的掌握词汇的掌握n n教学难点教学难点教学难点教学难点：专业英语词汇的记忆，掌握，长：专业英语词汇的记忆，掌握，长难句的翻译。

难句的翻译n n讲授方法讲授方法讲授方法讲授方法：以学生朗读、翻译、概括大意为：以学生朗读、翻译、概括大意为主，老师总结、讲解相关专业知识辅助学生主，老师总结、讲解相关专业知识辅助学生理解理解n n教学内容教学内容教学内容教学内容：n nLesson 1 Introduction n n1Words 词汇词汇n nnumerical control (NC) numerical control (NC) 数字控制数字控制n ncomputer numerical control (CNC) computer numerical control (CNC) 计算机数计算机数字控制字控制n nadvanced manufacturing technologies advanced manufacturing technologies 先进制先进制造技术造技术n nMassachusetts Institute of Technology (M.I. T.) Massachusetts Institute of Technology (M.I. T.) 麻省理工学院麻省理工学院n nservo system servo system 伺服系统伺服系统n nmeasure device measure device 测量装置测量装置n nimpulse impulse n. n. 脉冲脉冲n nmilling cutter milling cutter 铣刀铣刀n nimplementation implementation n. n. 工具，仪器，执行过程工具，仪器，执行过程n nhard-wire hard-wire n. n. 硬线连接硬线连接n ntwo-axis two-axis n. n. 两坐标两坐标n nversatile versatile adj. adj. 多方面的，多变的，多用多方面的，多变的，多用途的途的途的途的n n2. Key Sentences 重点句子重点句子n n Numerical Control (NC) is any machining process in Numerical Control (NC) is any machining process in which the operations are executed automatically in which the operations are executed automatically in sequences as specified by the program that contains the sequences as specified by the program that contains the information for the tool movements.information for the tool movements.n n 数字控制是按照含有机床数字控制是按照含有机床( (刀具刀具) )运动信息程序运动信息程序所指定的顺序自动执行操作的加工过程。

所指定的顺序自动执行操作的加工过程n n此此句句中中包包含含两两个个定定语语从从句句，第第一一个个从从句句的的先先行行词词是是machining machining processprocess，in in whichwhich引引导导从从句句the the operations operations are are executed executed automatically automatically in in sequences sequences as as specified specified by by the the program program that that contains contains the the information information for for the the tool tool movements. movements. 在在定定语语从从句句中中that that contains contains the the information information for the tool movements for the tool movements 作定语从句，修饰作定语从句，修饰the programthe program。

n n When When the the first first Numerically Numerically Controlled Controlled (NC) (NC) machine machine was was controlled controlled by by punched punched tape, tape, and and because because of of that, that, the the NC NC systems systems were were known known as as tape-tape-controlled machines.controlled machines.n n 第第一一台台数数控控机机床床的的数数据据是是由由穿穿孔孔纸纸带带控控制制的的，因此数控系统被称为纸带控制机床因此数控系统被称为纸带控制机床n n Only Only the the way way in in which which the the execution execution is is controlled controlled is different.is different.n n 只是只是控制执行的方式不同。

控制执行的方式不同n n 此此句句的的主主干干结结构构是是“ “the the way way is is different”different”，“ “in in which which the the execution execution is is controlled”controlled”作作为为定定语语从从句修饰句修饰the waythe waynLesson 2 The Types of NC Machine n n1Words 词汇词汇n nlathe lathe n. n. 车床车床n nturning center turning center n. n. 车削加工中心车削加工中心n nmilling machine milling machine n. n. 铣床铣床n nmachining center machining center n. n. 铣削加工中心铣削加工中心n nelectrical discharge machine (EDM) electrical discharge machine (EDM) n. n. 电火花加工机床电火花加工机床n nflame cutter flame cutter n. n. 线切割机床线切割机床n ngrinder grinder n. n. 磨床磨床n nmachine center (MC) machine center (MC) 加工中心加工中心n nvertical vertical adj.adj. 立式的，垂直的立式的，垂直的n nhorizontal horizontal adj.adj. 水平的，卧式的水平的，卧式的n nautomatic tool changer automatic tool changer 自动刀具交换机构自动刀具交换机构n ntool magazine tool magazine 刀库刀库n n2. Key Sentences 重点句子重点句子n n Since its introduction, NC technology has found Since its introduction, NC technology has found many applications many applications n n 数控技术自数控技术自发明发明以来以来，得到了广泛的应用得到了广泛的应用n n 此句中此句中 its its 指代指代 NC technologyNC technologyn nLesson 3 The Advantages and Disadvantages of CNC Machines n n1Words 词汇词汇n nadvantage advantage n. n. 优点优点n ndisadvantage disadvantage n. n. 缺点缺点n nperform perform v. v. 执行执行n nmultiple multiple adj.adj. 多个多个n nsimultaneous simultaneous adj. adj. 联动联动n nconventional conventional adj. adj. 传统的传统的n nset up set up 安装安装n nspecial profile tools special profile tools 成形刀具成形刀具n nprecision precision n. n. 精度精度n nscrap scrap n. n. 废品废品n nCADCAD（computer aided designcomputer aided design） 计算机辅助设计计算机辅助设计n nCAMCAM（computer aided manufacturingcomputer aided manufacturing）计算机辅）计算机辅助制造助制造n nmaintain maintain v. v. 维护，护养维护，护养 n n2. Key Sentences 重点句子重点句子n n NC machines have many advantages over NC machines have many advantages over conventional machines;conventional machines; n n 计算机数控机床和传统机床相比具有很计算机数控机床和传统机床相比具有很多优点多优点；n n overover：介词，超过，越过：介词，超过，越过n n The scrap rate is significantly reduced The scrap rate is significantly reduced because of the。