Part *** 12 of this book includes the necessary basic knowledge of mechanics, engineering materials, common mechanisms, mechanical transmission, coupling and shafting parts, mechanical energy conservation, environmental protection and safety protection. In the form of words, this book adopts the contrast layout and two-color printing of Samonji's right picture, which is rare in domestic mechanics textbooks, to facilitate readers' reading and analysis; In the legend, a large number of physical drawings and three-dimensional drawings are used, which is intuitive and clear.
This book can be used as a textbook for the course of "Mechanical Basis" of mechanical and related majors in secondary vocational schools, and can also be used as a textbook for on-the-job training of mechanical manufacturing and processing practitioners. order
foreword
learning target
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1 static analysis of components
learning target
introduce
The concept and basic properties of 1. 1 force
1. 1. 1 the concept of force
1. 1.2 Basic axioms of statics
1.2 binding force and binding force
1.3 force system and stress diagram
1.3. 1 classification of force system
1.3.2 stress diagram
1.4 Moment and couple
1.4. 1 point torque
1.4.2 Couple and Couple Moment
1.4.3 Synthesis and Equilibrium Conditions of Plane Couple System
Translation theorem of 1.4.4 force
case analysis
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Chapter II Basic Deformation of Bar Members
learning target
introduce
2. 1 overview
The strength and stiffness are 2. 1. 1 bar.
2. 1.2 internal force and section method
The basic deformation is 2.65438 0.3 bar.
2.2 Axial tension and compression
2.2. 1 the concept of tension and compression
Axial force and stress
2.2.3 Mechanical properties of materials in tension and compression.
2.3 Shear and extrusion
2.4 Torsion of the round shaft
2.5 Bending of straight beam
*2.6 Combined deformation of bending and torsion
case analysis
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Chapter 3 Basic knowledge of mechanical engineering materials
learning target
introduce
3. 1 Mechanical properties of metal materials
3.2 steel
3.2. 1 properties, characteristics and application of non-alloy steel (carbon steel)
3.2.2 Properties, characteristics and application of alloy steel
3.3 Cast steel
3.4 Heat Treatment of Steel
3.4. 1 steel annealing and normalizing
3.4.2 Quenching and Tempering of Steel
3.4.3 Steel surface heat treatment
3.5 cast iron
3.5. 1 gray cast iron
malleable (cast) iron
nodular cast iron
Worm graphite cast iron
3.6 Nonferrous metals
3.6. 1 copper and copper alloys
Aluminium and aluminium alloys
3.7 engineering plastics
3.8 Selection of Mechanical Engineering Materials
case analysis
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Chapter IV Planar Linkage Mechanism
learning target
introduce
4. 1 kinematic pairs and their classification
4.2 Basic forms of planar four-bar mechanism
4.2. 1 hinge four-bar mechanism
4.2.2 slider four-bar mechanism
*4.3 Basic characteristics of planar four-bar mechanism
case analysis
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Chapter V Other Commonly Used Institutions
learning target
introduce
5. 1 Types and applications of cam mechanism
5.2 Common motion laws of driven parts
5.2. 1 Working process of cam mechanism
5.2.2 Common motion laws of driven parts
5.3 Pressure Angle of Cam Mechanism
*5.4 Structure and material of cam
*5.5 Working principle, types and applications of ratchet mechanism
*5.6 Working principle, types and applications of pulley mechanism
case analysis
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Chapter 6 Belt Drive and Chain Drive
learning target
introduce
6. Working principle, types and characteristics of1belt drive
6.2 Common V-belts and V-pulleys
6.3 Analysis of Working Capacity of Belt Drive
6.4 Tension, installation and maintenance of belt drive
6.5 chain drive
6.5. 1 Overview
Roller chains and sprockets
6.5.3 Failure Form of Chain Drive
6.5.4 Chain transmission lubrication
case analysis
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Chapter VII Gear Transmission
learning target
introduce
7. 1 overview
7.2 Main parameters of involute cylindrical gear
7.2. 1 Name of gear parts
Main parameter
7.3 Structure of cylindrical gear and geometric dimensions of standard spur gear
7.3. 1 Structure of cylindrical gear
7.3.2 Geometric dimensions of standard spur gears
7.4 Correct gear meshing conditions
*7.5 Tooth cutting principle of involute gear
7.6 Common failure forms and material selection of gears
7.6. 1 gear tooth failure form
7.6.2 Common materials for gears and their heat treatment
7.7 Maintenance of Gear Transmission
7.8 worm drive
7.8. 1 characteristics and application of worm drive
7.8.2 Basic parameters and geometric dimensions of worm drive
7.8.3 Motion analysis and fault form of worm drive
7.8.4 Maintenance of Worm Drive
case analysis
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Chapter VIII Gear train
learning target
introduce
8. 1 fixed shaft gear train
8. 1. 1 Example of fixed shaft gear train
8. 1.2 Calculation of transmission ratio of fixed-axis gear train
8.2 reducer
8.2. 1 Main forms, characteristics and applications of reducer
8.2.2 reducer structure
case analysis
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Chapter 9 Connection
learning target
introduce
9. 1 thread basics
9.2 threaded connection
9.2. 1 Main types of threaded connections
9.2.2 Common threaded connector
9.2.3 Pre-tightening and locking of threaded connection
9.2.4 Structural design of bolt group connection
9.3 key connection
9.3. 1 Types, standards and applications of loose bond connection
9.3.2 Types, standards and applications of tight key connection
9.4 Spline connection
9.5 Pin connection
case analysis
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Chapter 10 Supporting Parts
learning target
introduce
Classification and application of 10. 1 axis
10. 1. 1 classified by load.
10. 1.2 according to the geometry of the shaft.
Material and selection of 10.2 axis
Structural analysis of 10.3 axis
Positioning and Fixing of Parts on Axis 10.3. 1
Machining and assembly technology of 10.3.2 shaft
10.4 rolling bearing
10.4. 1 Functions and characteristics of bearings
10.4.2 structure and types of rolling bearings
10.4.3 Types and codes of rolling bearings
10.4.4 types, characteristics and selection of rolling bearings
10.4.5 Installation and removal of bearings
10.5 sliding bearing
10.5. 1 Structure and type of sliding bearing
10.5.2 structure and bearing material of bearing bush (shaft sleeve)
10.5.3 bearing lubrication and sealing
10.5.4 sealing of bearings
10.6 coupling
10.6. 1 Structure and characteristics of common couplings
10.6.2 selection of coupling
10.7 clutch
case analysis
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Chapter 1 1 mechanical energy saving, environmental protection and safety protection
learning target
introduce
1 1. 1 Friction and lubrication of machinery
11.1.1friction and wear
1 1. 1.2 lubrication
1 1.2 Formation and protection of mechanical noise
1 1.2. 1 What is noise?
1 1.2.2 noise characteristics
1 1.2.3 noise level and impact
1 1.2.4 noise protection
1 1.3 mechanical safety protection
1 1.3. 1 machinery industry safety summary
1 1.3.2 protective measures for mechanical transmission mechanism
1 1.3.3 Types of mechanical hazards and preventive measures
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refer to