新数控专业英语教学课件沈延秀 Part 4

数控专业英语PPT课件

目的是在培养学生对于专业英语听、说、读、写、译的能力。我们在课堂上将会学习数控相关专业词汇、文章以及科技文献的翻译技巧。科技类的文章是我们在以往的英语学习中很少遇见的。但它同样也是我们在走向工作岗位后接触最多的一种应用英语。产品说明书、国外相关专业的资料介绍以及和对外贸易洽谈都离不开专业英语的应用。
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Ⅱ. 科技英语的特点： • 任何作品均有其特定的文体；每一文体有其相应的特点。科技问题崇尚严谨周密，
概念准确，逻辑性强，行文简练，重点突出，句式严整，少有变化，常用前置性陈述，即在句中将主要信息尽量前置，通过主语传递主要信息。 • 科技文章文体的特点是：客观（objectivity）、清晰（accuracy）、准确、精练（conciseness）、严密。现在我们就具体介绍几个科技英语的语言特点。
11以同志为核心的党的第三代中央领导集体形成以来的13年党中央高举理论伟大旗帜贯彻三个代表重要思想坚持走中国特色社会主义道路对全面推进改革开放和社会主义现代化建设做出了一系列重大决策我国改革开放和现代化建设取得了举世瞩目的伟大成就
Ⅰ. 简述：数控专业技术英语是一门建立在数控知识基础和英语能力运用的应用类课程。
• 另外，CAD/CAM第8页软/共件86页与数控机床之间的联系
Ⅲ. 如何学习科技英语 1.掌握一定的专业基础。 2.牢记本专业常用名词词组和专业词汇。
machine tools 机床
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• In the 13 years since the founding of the third generation collective leadership with Mr. Jiang Zemin at the core, China has made remarkable achievements in reform and opening up. The Central Party Committee has held high the great banner of Deng Xiaoping Theory, implemented the thought of "Three Representations", followed the path of building socialism with Chinese characteristics, and taken a host of important decisions on advancing

《数控应用专业英语》课件第5章

5 FEED FUNCTIONS
F0, 25, 50, 100% F0: allows a fixed feedrate to be set for each axis by parameter No.1421. For detailed information, refer to the appropriate manual of the machine tool builder.
·Feed functions (ⅰ) Rapid traverse. When the positioning command (G00) is specified, the
tool moves at a rapid traverse feedrate set in the CNC. (ⅱ) Cutting feed. The tool moves at a programmed cutting feedrate.
5 FEED FUNCTIONS
5.3 CUTTING FEED
Feedrate of linear interpolation (G01), circular interpolation (G02, G03), etc. are commanded with numbers after the F code.
5 FEED FUNCTIONS
Fig.5.3(c) Feed per revolution
5 FEED FUNCTIONS
CAUTION When the speed of the spindle is low, feedrate
fluctuation may occur. The slower the spindle rotates, the more frequently feedrate fluctuation occurs.

《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

数控技术教学课件——数控04.ppt

教学基本要求
Yangzhou University
1、掌握数控装置的组成及它具有的功能和相关的概念。
第四
2、掌握数控装置的硬件体系结构和软件章
体系结构以及每个硬件模块、软件模块的功能计
和作用。
算
3、理解和掌握前后台结构、中断结构、
机数
主从结构、多主结构等概念。
控装
4、理解和掌握数据的预处理过程，刀具置
由于CNC装置中的计算机具有较强的运算处理能力，因此，使实现复杂的数控功能成为可能。如：
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（1）插补功能：二次曲线、样条、空间曲面等插章
补。
（2）补偿功能：运动精度、随机误差补偿、非线性
计算
误差补偿等。
机数
（3）人机对话功能：加工的动、静态跟踪显示，高
控装
级人机对话窗口。
置
（4）编程功能：G代码、蓝图编程、部分自动编程功能。
补偿的概念、方法及刀补B、刀补C的区别。
数控技术
NC Technology
CNC概述
1．CNC装置的组成
Yangzhou University
从自动控制的角度来看，数控系统是一种轨迹控
制系统，即其本质上是以多执行部件（各运动轴）的第
位移量为控制对象并使其协调运动的自动控制系统，
四章
是一种配有专用操作系统的计算机控制系统。从外部
第
四
1）具有灵活性和通用性
章
CNC装置的功能大多由软件实现，且软
计算
硬件采用模块化的结构，系统功能的修改、扩
机数
充变得较为灵活；CNC装置基本配置部分是通用的，不同的数控机床仅配置相应的特定的功
控装置

最新中职数控技术应用专业实用英语授课教案：4.4

▲ The students write what the teacher reads in English: 1. output terminal 2. diode 3.channel 4. valve 5. corresponding6. When several loads share the same power supply, to simplify the wiring, we can connect the corresponding independent COM terminals to a short-circuit wire.▲ 1. The students read the words after the teacher, paying attention to the pronunciation of the words. (The phonetic symbols for “denote” in the textbook isnot correct, it should be [])2. Ask some students to read the words. The teacher corrects their pronunciations if necessary.3. Pair work: One student speaks English, the other speaks Chinese.4. The teacher explains the following words:1) contact接触、接触器e.g If the exposed wirescontact，we shall have a short circuit.如果那暴露的电线相互接触，就会出现短路。

注意，contact 不要与contract（合同）混淆。

2) register n & v记录, 登记, 注册, 寄存器The company must be registered before the end of October . 公司必须10月底以前注册。

数控技术应用专业英语LS2-4

dry run mode keyprogram start keymachine lock keychip CW key: Discharge chips clockwisechip CCW key: Discharge chips counterclockwiseATC CW key: Tool storage turns clockwiseATC CCW key: Tool storage turns counterclockwisecutting fluid control key: Open or close the cuttingfluidshome start key: Press the key and select X，Y or Zaxis, the machine returns to the reference pointspindle CW key: Spindle rotates clockwisespindle stop key: Spindle stopspindle CCW key: Spindle rotates counterclockwisecycle start key: Make the program run automaticallyfeed hold keyemergency stop keypower on key: Power on the CNC machinepower off key: Power off the CNC machine2. An Example of Machining（1）Power on 开机 Now that you are familiar with the control panel and operation panel, you may power on the machine. 【熟悉了控制面板和操作面板后，就可以接通电源了】（2）Return to the reference point 回参考点 Reference point which is fixed by the manufacturer is the farthest distance along the positive machine axes. The machine must be found its fixed machine reference point before it can be performed any operation. 【参考点由机床制造厂设定并且固定不变，它是机床坐标轴正向的极限点。

数控技术专业英语 PPT课件

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• 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
computers to coordinate the operation of a number
of CNC machines. Ultimately, it may be possible to
coordinate an entire factory in this manner.
3
三、专业知识点 • 数控系统的组成四、练习
6
• 精度 Accuracy • 转塔头 Turret head • 卧式加工中心 Horizontal spindle machining center • 立式加工中心 Vertical spindle machining center
7
二、重难点句
• Machining center greatly increased production rates because more operations could be performed on a workpiece in one setup.
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• 冷却液 coolant • 柔性制造 flexible manufacturing • 工件夹紧 workholding • 小批量 small part lots • 中小批量生产 middle or small batch production • 大批量生产 mass production • 装配 assembly • 详细目录, 存货清单,（商店的）存货，库存 inventory • 第一次/第二次工业革命 the first/second industrial revolution

Continuous Steel Casting专业英语学习课件

However, increasingly the ladle is being used as a reactor in ladle furnaces or ladle-treatment stations, installed between the steelmaking furnace and the caster. In these operations, the composition and temperature of the steel can be adjusted to meet final specifications. In this way, the productivity of the steelmaking furnace can be increased, since its primary functions are reduced to melting scrap and decarburization.
Nucleation theory —for both very clean, isolated liquid metals (homogeneous nucleation) and for metals in contact with substrates such as inclusions (heterogeneous nucleation)—has been well developed over the last 50 years.
Microsegregation results because the solid forming is different in composition from the liquid from which it forms (generally less rich in solute). The excess solute is thereby rejected into the liquid, into the narrow spaces between the dendrite arms.