中职 数控技术应用专业英语完整版课件全套ppt教程(最新)
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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
助制造
maintain v. 维护,护养
2. Key Sentences 重点句子
① NC machines have many advantages over
conventional machines;
计算机数控机床和传统机床相比具有很
多优点;
over:介词,超过,越过
② The scrap rate is significantly reduced
UNIT 5 NC Programming UNIT 6 Modern Computer-aided Part
Programming UNIT 7 NC Machine Operation UNIT 8 Mechatronics
UNIT 1 Computer Numerical Control of Machine tools
2. Key Sentences 重点句子
①However, the programmability of the
machine is dependent on whether there is a
computer in the machine’s control.
然而,机床程序的可编程性是依据于机床
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
教学目的:使学生掌握数控技术的发展及其 基本知识。相关英语词汇以及主要用法。
教学重点:数控技术的有关知识及相关英语 词汇的掌握
教学难点:专业英语词汇的记忆,掌握,长 难句的翻译。
讲授方法: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 理解
教学内容:
Lesson 1 Introduction
program that contains the information for the tool movements. 在定语从句中that contains the information for the tool movements 作定语从句,修饰the program。
② When the first Numerically Controlled (NC) machine was controlled by punched tape, and because of that, the NC systems were known as tapecontrolled machines.
Lesson 2 The Types of NC Machine
1.Words 词汇
lathe n. 车床 turning center n. 车削加工中心 milling machine n. 铣床 machining center n. 铣削加工中心 electrical discharge machine (EDM) n. 电火花加工机床
麻省理工学院
servo system 伺服系统 measure device 测量装置 impulse n. 脉冲 milling cutter 铣刀 implementation n. 工具,仪器,执行过程 hard-wire n. 硬线连接 two-axis n. 两坐标 versatile adj. 多方面的,多变的,多用途的
控制系统中是否有计算机。
此句中从句“whether there is a computer in
the machine’s control”作介词 on 的宾语从句。
②The number of pulses that the control sends to the stepper motor controls the amount of the rotation of the motor.
open loop 开环 close loop 闭环 control system 控制系统 drive v. , n. 驱动,驾驶 hydraulic servomotors 液压伺服电机,液压
马达
automatic tool changers 自动换刀机构 random selection 随机选刀 sequential selection 顺序选刀 stepper motor 步进电机 turret n. 转塔刀架
控制单元发送给步进电机的脉冲数控制电机的 旋转角度。
此句中“that the control sends to the stepper motor”为定语从句,修饰“The number of pulses”。
③ They come in four basic types: 它们有四种基本类型:
grinding machine 磨床
boring machine 镗床
punching n.冲孔
punching machine 冲床 turning n.车削
turning machine 车床 sawing n.锯(切) sawing machine 锯床 routing n.特型铣削 routing machine 特型铣床 surpass v.超过,优于 literally adv.严格地;字面上地 sculpt v.雕刻
第一台数控机床的数据是由穿孔纸带控制的, 因此数控系统被称为纸带控制机床。
③ Only the way in which the execution is controlled is different.
只是控制执行的方式不同。
此句的主干结构是“the way is different”, “in which the execution is controlled”作为定语从 句修饰the way。
breed n.品种,种类 undulating adj. 波浪形的,起伏的
proliferate v.繁殖,扩散
blueprint n.蓝图,设计图
graph n.曲线图,图形 stylus n.笔尖,唱针 compatible adj. 兼容的,可匹配的 existing adj. 现存的 wrapping n.缠绕 filament n.细丝,灯丝 winding n.线圈,绕组 miniaturization n. 小(微)型化 pin n.管脚
come in:归纳起来
UNIT 2 NUMERICAL CONTROL TECHNOLOGY APPLICATIONS
1.Words 词汇
undesirable adj.不合乎需要的 complexity n.复杂性 dash v.划线 boundary n.界线,范围 knit v.编织 fabric n.织物 jet n.喷气(流) in-depth adj.深入的,彻底的 milling machine 铣床 drilling machine 钻床 grinding n.磨削
2. Key Sentences 重点句子
① 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.
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.)
flame cutter n. 线切割机床 grinder n. 磨床 machine Байду номын сангаасenter (MC) 加工中心 vertical adj. 立式的,垂直的 horizontal adj. 水平的,卧式的 automatic tool changer 自动刀具交换机构 tool magazine 刀库
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
数控技术应用专业英语
Contents
UNIT 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
2. Key Sentences 重点句子
① Since its introduction, NC technology has found many applications …
数控技术自发明以来,得到了广泛的应用……
此句中 its 指代 NC technology
Lesson 3 The Advantages and Disadvantages of CNC Machines