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Unit 1 Mechanical Engineering Drawing1

Section 1 Reading1

1．Detail Drawings1

2．Assembly Drawings5

Section 2 Have a Try6

Section 3 Speaking Activity 8

Section 4 Learn More:Views and Sections9

Unit 2 Electrical Control Drawing 13

Section 1 Reading13

1．The Electrical Elements,Circuit Components and the Symbols 13

2．Electric Control Wiring 15

3．Typical Electric Control Circuits of the Machine Tools16

Section 2 Have a Try18

Section 3 Speaking Activity 19

Section 4 Learn More:Relay Device Components 19

Unit3 Engine Machine Tools and Operation 23

Section 1 Reading23

1．The Types and Main Purposes of the Engine Machine Tools23

2．Lathe 23

3．Milling Machine 24

4．Drilling Machine 26

5．Shaper 27

6．Grinding Machine 28

Section 2 Have a Try 28

Section 3 Speaking Activity 30

Section 4 Learn More:Introduction of the Surface Grinders 31

Unit 4 NC Machine and NC Programming 35

Section 1 Reading 35

1．Application,Basic Components and Types of NC 35

2．Main Switches on the Operator's Panel 36

3．Control Panel and its Main Functions 37

4．The Commonly Used Codes and Control Functions 39

Section 2 Have a Try 40

Section 3 Speaking Activity 41

Section 4 Learn More:The Machining Center 42

Unit 5 Mould Technique 45

Section 1 Reading 45

1．Kinds of Mould 45

2．Functions of the Sprue,Runner,and Gate 45

3．Characteristics of Restrictive Gate and Nonrestrictive Gate 46

Section 2 Have a Try 47

Section 3 Speaking Activity 49

Section 4 Learn More:Function of Major Parts for an Ejection System 49

Unit 6 Metal Cutting 53

Section 1 Reading 53

1．Turning Process,Cutting Tools and the Cutting Material53

2．Milling 55

3．Drilling 57

4．Grinding 58

5．Shaping and Planing 61

6．Boring 61

7．Properties and Materials of Cutting Tools 62

Section 2 Have a Try 63

Section 3 Speaking Activity 64

Section 4 Learn More:Casting,EDM 65

Unit 7 Programmable Logic Controller(PLC) 67

Section 1 Reading 67

1．Types of Control Devices 67

2．Applications of PLC 67

3．Advantages and Architecture of PLC 68

4．PLC Programming Languages 69

5．PLC Programming Functions 70

Section 2 Have a Try 70

Section 3 Speaking Activity 72

Section 4 Learn More:PLC Operation 73

Unit 8 Electrical Instrument Measurement 77

Section 1 Reading 77

1．Electrical Measurement 77

2．Multimeters 77

3．Ohmmeters and Mega-Ohmmeters 79

4．Oscilloscopes 80

5．Transformers 81

6．How to Measure the Voltage 82

Section 2 Have a Try 83

Section 3 Speaking Activity 84

Section 4 Learn More:Introduction of Manual Signal Generator 85

Unit 9 Troubleshooting and Maintenance(CNC Machine) 87

Section 1 Reading 87

1．Safety Notes for CNC Machine Operations 87

2．Fault Diagnosis and Action 88

3．Maintenance 90

4．Example Maintenance for a Horizontal MC 91

Section 2 Have a Try 93

Section 3 Speaking Activity 95

Section 4 Learn More:Troubleshooting for Surface Grinders 95

Unit 10 Electronic Technique 99

Section 1 Reading 99

1．Resistors 99

2．Capacitors 100

3．Inductors 100

4．Semiconductor Diode 101

5．Transistor102

6．Operational Amplifier103

Section 2 Have a Try103

Section 3 Speaking Activity104

Section 4 Learn More:Integrated Circuit105

Key to"Have a Try"107

Reference Translation for Reading110

AppendixAppendix 1 Common Terminology in Engineering Drawing139

Appendix 2 Common Vocabulary for Heat-Treatment and Engineering Materials146

Appendix 3 Terminology in Electronic Information149