机械专业英语阅读教程(第二版)课件

Passage One
Properties of Metals and Heat Treatment of Steel
大连理工大学出版社
Unit One
The Foundation of Metalworking
本篇主要内容



介绍金属特性及钢的热处理（This unit explains Properties of Metals and Heat Treatment of Steel） 金属特性:strength, hardness, elasticity, ductility and toughness…… 钢的热处理:hardening; tempering; annealing; normalizing.
Unit Two Machine Manufacturing Engineering
第六段：


Drilling 难句：The function of flutes is to provide outlet passages for the chips generated during the drilling operation and also to allow lubricants and coolant to reach cutting edges and the surface being machined。 不定式 被动语态
大连理工大学出版社
Unit Two Machine Manufacturing Engineering
第三至五段：


Bed Headstock 难句：The headstock is a subassembly that is mounted on the left end of the bed. On a geared-head lathe, the headstock supports and encloses a train of gears that rotate the headstock spindle at rpm which are suited to the operating conditions of different jobs routed to the machine 。 定语从句
ห้องสมุดไป่ตู้
大连理工大学出版社
Unit Two Machine Manufacturing Engineering
第九，十段：



milling Grinding Milling consists of machining a piece of metal by bringing it into contact with a rotating cutting tool which has multiple cutting-edges. 方式状语 Which引导的定语从句
大连理工大学出版社
Unit Two Machine Manufacturing Engineering
Passage One
The Basic Operations of Machining Metal
大连理工大学出版社
本篇主要内容

drilling Boring Turning Planing milling and grinding
大连理工大学出版社
Unit Two Machine Manufacturing Engineering
第八段：


Planing 难句：The essential difference lies in the fact that the cutting tool remains in a fixed position while the workpiece is moved back and forth beneath it 。 复杂句翻译 定语从句
大连理工大学出版社
Unit Two Machine Manufacturing Engineering
第七段：


Turning 难句：Turning is a type of metal processing operation where a cutting tool is used to remove an unwanted material to produce a desired product, and is generally performed on lathe 。 定语从句
chemical properties physical properties mechanical properties 难句：In understanding the related areas of metalworking and methods used today, the mechanical properties of metals are of the utmost importance。
本篇主要内容



Turning and Boring on Lathe(车床上车 削和镗削 ) Explain lathe components of an engine lathe Lathe work Lathe cutting tools
大连理工大学出版社
Unit Two Machine Manufacturing Engineering
机械专业英语阅读教程
大连理工大学出版社
目录



Unit One The Foundation of Metalworking Unit Two Machine Manufacturing Engineering Unit Three Electro-Mechanical Engineering Unit Four CNC Unit Five Modern Manufacturing Technology Unit Six Practical Writings
大连理工大学出版社
Unit Two Machine Manufacturing Engineering
Passage Two
Fundamentals of Turning and Boring on Lathe
大连理工大学出版社
Unit Two Machine Manufacturing Engineering
The Foundation of Metalworking
第五段：

Unilateral tolerance and bilateral tolerance(单向公差及双向公差)
大连理工大学出版社
Unit Two



Passage One The Basic Operations of Machining Metal Passage Two Fundamentals of Turning and Boring on Lathe Passage Three Milling
第一至二段：


Lathe (function and calssification) Function: facing, groove cutting, boring and internal turning, taper turning, thread cutting and knurling Calssification:(1) engine lathe; (2) turret lathe; (3) vertical turning and boring mill; (4) automatic lathe; and (5) special lathe
大连理工大学出版社
Unit Two Machine Manufacturing Engineering
第六段：


Tailstock 难句：The third part, the quill is a hardened steel tube, which can be moved longitudinally in and out of the intermediate part as required 。 非限制性定语从句
大连理工大学出版社
Unit One
The Foundation of Metalworking
Passage Two
Dimension and Tolerance
大连理工大学出版社
Unit One
The Foundation of Metalworking
本篇主要内容


Dimension and Tolerance （介绍尺 寸与公差） tolerance , fit, allowance ,
The Foundation of Metalworking
Part2: Heat treatment of steel



Hardening (第十至十五段) Tempering(第十六段) annealing(第十七至十九段) normalizing(第二十段) 难句：The maximum degree of hardness obtainable in steel by direct hardening is determined largely by the carbon content.
大连理工大学出版社
Unit One
The Foundation of Metalworking
Part1: 第七至九段：

Explain hardness and strength detailed indent cutting tool Machine tool
大连理工大学出版社
Unit One

Unit One
The Foundation of Metalworking
第一段：


难句： However, it is almost impossible to produce any component to the exact dimension through any of the known manufacturing processes . 形式主语和方式状语的用法
大连理工大学出版社
Unit One
The Foundation of Metalworking
Part1: 第一、二段：

Strength toughness
大连理工大学出版社
Unit One
The Foundation of Metalworking
Part1: 第三至六段：

大连理工大学出版社
Unit One


Passage One Properties of Metals and Heat Treatment of Steel Passage Two Dimension and Tolerance
大连理工大学出版社
Unit One
The Foundation of Metalworking
Unit Two Machine Manufacturing Engineering
第一至五段：

Explain operations of Machining Metal drilling and boring，turning, planing, milling and grinding
大连理工大学出版社
大连理工大学出版社
Unit One
The Foundation of Metalworking
第二至四段：

Category of tolerance（公差类型及特点） clearance fit interference fit transition fit
大连理工大学出版社
Unit One
大连理工大学出版社
Unit One
The Foundation of Metalworking
第一段：
Explain tolerance 难句：In dimensioning a drawing, the numbers placed in the dimension lines represent dimensions that are only approximate and do not represent any degree of accuracy unless so stated by the designer . Unless条件句 被动语态 大连理工大学出版社