机械专业英语阅读教程PDF电子书下载

导读 1

Unit One The Foundation of Metalworking 3

Passage One Classification of Metals 3

Passage Two Properties of Metals and Heat Treatment of Steel 6

Passage Three Metal Hot Working 11

Passage Four Metalworking Machine Tool 16

Unit exercises 19

Word building 20

Unit Two Machine Manufacturing Engineering 22

Passage One The Basic Machining Techniques 22

Passage Two Casting 25

Passage Three Dimension and Tolerance 30

Passage Four Forming 33

Unit exercises 38

Word building 39

Unit Three Mechanical Design 40

Passage One Gears 40

Passage Two Introduction to Design of Mechanism Systems 44

Passage Three Selection of Mechanisms 49

Passage Four CAD and CAM 53

Unit exercise 58

Word building 59

Unit Four Electric Part 61

Passage One Series and Parallel DC Networks 61

Passage Two Potentiometers 66

Passage Three Programmable Logic Controllers 71

Passage Four Use of Sensors in Programmable Automation 74

Unit exercises 78

Word building 78

Unit Five CNC 80

Passage One Classification of Numerical Control Machines 80

Passage Two Machining Centers 86

Passage Three CNC Turning Center and the PC300 Mill 90

Passage Four Advantages and Disadvantages of NC 94

Unit exercise 97

Word building 98

Unit Six Modern Manufacturing Technology 99

Passage One Computer Aided Manufacturing 99

Passage Two Introduction to Flexible Manufacturing 102

Passage Three Computer-Integrated Manufacturing 109

Passage Four The EDM Process 114

Unit exercises 117

Word building 118