Project 1 Machining Technology of Shaft Parts
Teaching objectives 1
Work task 1
1? 1 knowledge about processing technology of shaft parts 2
1? 1? 1 related practical knowledge 2
(1) shaft parts overview 2
(2) Processing technology analysis of shaft parts 3
1? 1? 2 Relevant theoretical knowledge 4
(A) the basic knowledge of machining process 4
(2) Process analysis of parts 1 1
(3) the choice of blank 13
(4) Positioning datum 17
(5) Formulating process route20
(6) Determination of machining allowance 30
(VII) Calculation of dimension chain and determination of process dimension 37
1? 1? 3 Expand knowledge 43
(1) Basic knowledge of assembly process 43
(II) Technological methods to ensure assembly accuracy 44
(3) Assembling dimension chain 48
(4) Assembly Process Formula 56
1? 1? 4 Exercise 62
1? 2 preparation of processing technology for shaft parts 63
1? 2? Analysis of processing technology of 1 transmission shaft 63
1? 2? 2 Relevant theoretical knowledge
(A) the determination of turning parameters 67
(II) Determination of cutting parameters of drilling, reaming and reaming 7 1
1? 2? 3 exercise 77
The second sleeve parts processing technology 78
Teaching objectives 78
Work task 78
2? 1 sleeve parts processing technology knowledge 79
2? 1? 1 related practical knowledge 79
(1) Overview of sleeve parts 79
(2) Processing technology of sleeve parts 8 1
2? 1? 2 Relevant theoretical knowledge
(A) the determination of machine tools and process equipment 82
(b) Time quota and economic analysis
(3) The concept of machining accuracy and surface quality 86
(4) Method of Obtaining Machining Accuracy 87
(5) The influence of surface roughness on the performance of parts 88
2? 1? 3 Expand knowledge 89
(A) the factors affecting the surface roughness and its control 89
(2) Factors affecting the physical and mechanical properties of the surface layer and their control 9 1
2? 1? 4 exercise 94
2? 2 preparation of sleeve parts processing technology 94
2? 2? Processing technology analysis of 1 connecting sleeve 94
2? 2? 2 Example of Machining Process of Step Sleeve 97
(a) Part drawing analysis 97
(2) Determine the blank 97
(3) Determine the machining method of the main surface 97.
(4) Determining the Positioning Datum 97
(5) Division of Processing Stages 97
(6) Machining dimensions and cutting parameters 97
(seven) the formulation of mechanical processing technology 97
2? 2? 3 exercise 98
Item 3 Processing Technology of Box Parts 100
Teaching objectives 100
Task 100
3? 1 knowledge about processing technology of box parts 10 1
3? 1? 1 related practical knowledge 10 1
(1) Overview of box parts 10 1
(2) Box structure technology 10 1
(3) 102 box processing technology and process analysis
(4) Processing method of box plane 103
(5) Processing method of box hole system 103
3? 1? 2 related theoretical knowledge 106
(1) Error of machining principle 107
(2) Static error of process system 107
(3) The dynamic error of the process system is 1 15.
(IV) Technical Measures to Ensure and Improve Machining Accuracy 124
3? 1? 3 Extended knowledge 125
(a) the nature of the machining error 125
(2) Statistical analysis method of machining error 125
3? 1? 4 exercise 132
3? 2. Compile the processing technology of box parts 133.
3? 2? 1 reducer 133 processing technology analysis
3? 2? 2 related theoretical knowledge 133
(1) milling factor 133
(2) Selection of milling parameters 133
3? 2? 3 exercise 138
Item 4 Processing Technology of Cylindrical Gear Parts 139
Teaching objectives 139
Task 139
4? 1 knowledge about machining process of cylindrical gear parts 140
4? 1? 1 related practical knowledge 140
(1) Overview of cylindrical gear parts 140
(2) Gear material, heat treatment and blank 14 1
(3) Gear blank machining technology 14 1
(4) Processing technology of cylindrical gear 14 1
4? 1? 2 related theoretical knowledge 143
(1) hobbing 143
(2) Gear shaper 147
(3) Comparison of technological characteristics between gear shaping and gear hobbing 148
4? 1? 3 exercise 149
4? 2. Compile the processing technology of cylindrical gear parts 149
4? 2? Analysis of 1 cylindrical gear machining process
4? 2? 2 related theoretical knowledge 150
(1) Measuring gear tooth deviation 150
(2) Measurement of gear tooth profile deviation 153
(3) Measure the gear radial runout deviation 153
(4) Measurement of gear pitch deviation 153
(5) Measurement of common normal length deviation and its change of gears 154
Project 5 155 Part of Processing Technology Example
5? Processing technology of 1 lower guide wheel seat 155
5? Processing technology of 2 roller 157
5? Machining technology of triaxial 159
5? 4 Processing technology of lower bearing 16 1
5? 5 Processing technology of pointer bearing seat 163
Reference 165