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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