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编制日期： 2006年4月 22日

教师签字： 教研室主任签字：

数控技术英语专业授课计划

2005－2006 学年 第 二 学期

_______ 系（部） 专业 班 授课时间： 第 1 周 第 1－4 课时 2006年4月22日

文章及题目: Unit 4

Numerical Control Part Programming

教学目的：1. Help the students to learn more about Numerical Control Part

Programming.

2. Help students to read for the main ideas in paragraphs.

3.Help the students to grasp more new words, expressions and three-sentence patterns.

4. Strengthen their abilities of dialogues.

重点与难点： （1） to get information and indulge in the topic of this unit. 教学手段与教具（录音机、多媒体）： 教学过程（教学步骤、内容等）：

Section I Technical and Practical Reading Section II Glance at a Control Console Section III Simulated Writing Section IV Communicative Speaking Section V Broaden Your Horizon

Section I Technical and Practical Reading

Part I. Leading in

1. Revision

1) Ask several students to recite the practical sentences for Numerical Control Part Programming in Unit 4 and the others repeat.

2) Ask students to answer teacher’s questions according to the Passage A /B for Numerical Control Part Programming in Unit 4. 2. Warming up for the new class

1) Ask students to work in groups of four to read new words and phrases.

2) Teacher makes comments

Part II. Comprehension and Practicing

1. Checking and Explaining

1) Teacher raises some questions and asks students to say true or false according to the passage of the Textbook Numerical Control Part Programming in Unit 4.

2) Teacher raises some questions and asks students to answer in details according to the passage of the Textbook Numerical Control Part Programming at the same time explaining some language points.

3) Possible difficult words, phrases and sentences

Words:

manually ad. 手动地，人工地

e.g. The conversion of the engineering blueprint to a part program can be performed manually.

conversion n. 转化,变换

e.g. The core of manual programming, however, is preparation of the manuscript, its conversion into a verified tape, and subsequent editing. assistance n. 协助，帮助

e.g. With the assistance of him, she passed the exam. extensive a. 广大的, 广泛的

e.g. They must have extensive knowledge of machining processes. characteristics n. 特性，特点

e.g. Part programmers determine the cutting parameters based upon characteristics of the work-piece, tool material, and limitations of the machine tool. comprise v. 包括，组成

e.g. NC part programming comprises the collection of all data required to produce the part.

arrangement n. 编排, 排列

e.g. The arrangement of those given and calculated data is in a standard format. technique n. 技术,技巧,方法

e.g. There are two types of data processing techniques employed to produce the punched tape.

execute v. 执行, 实行

e.g. Manual tape programming is executed by part programmers. sequence n. 顺序,次序

e.g. Based on this sequence, they calculated the tool path and write a manuscript. preparatory a. 准备的，预备的

e.g. The word addresses are denoted as follows: n, sequential number; g, preparatory function; x and y, dimensional words. afterward ad. 然后, 后来

e.g. There are five basic types of machine tools to perform machining: lathe or

turning machine, drilling or boring machine, milling machine, shaper or planer, and grinder.

complexity n. 复杂(性)afterward ad. 然后, 后来 afterward ad. 然后, 后来 afterward ad. 然后, 后来

Sentences:

2. (Para.4) The machining operation is a chip formation process which is accomplished

through the relative motion of a tool and the work-piece, as is done with machine tools. 由which 引导出限性定语从句修饰a chip formation process；而as is done with machine tools结构，则有2种解释，一是作方式状语从句，as之后省略了it；二是把as 看作which, 指代其前的全句。故此句可译作：

1) 加工是通过刀具与工件的相对运动来完成削片形成的过程。这些都由机床来完成。 2) 加工是通过刀具与工件的相对运动来完成削片形成的过程。如同机床加工一样。

Section II Glance at a Control Console

1. Simulating and translating

Do the following exercises and translate English into Chinese..