Technological process of the part type "Bushing"

Contents

1.    Analysis of the initial data for the design. 5

2.    Determination of the type of production. 6

3.    Numbering of treated surfaces. 7

4.    Formation of the initial blank. 8

4.1.     Selection of the method of obtaining the workpiece. 8

4.2.     Determination of allowances, tolerances and nominal dimensions of the initial workpiece. 8

4.2.1.Defining the Initial Index. 8

4.2.2.Definition of basic  allowances. 9

4.2.3. Determination of additional and general allowances and nominal dimensions of the workpiece. 9

4.2.4. Assignment of tolerances, limit deviations and sizing of the reference workpiece  10

5.    Determination of stages and methods of surface treatment. 11

6.    Formation of operations and development of operational sketches. 11

6.1.Formation of the route description. 11

6.2.Justification for the choice of equipment. 19

7.    Determination of diametrical dimension allowances. 23

8.    Dimensional analysis. 26

8.1.Dimensional diagram of the technological process. 26

8.2. Assignment of preliminary tolerances on the operating dimensions of the initial workpiece. 27

8.3.Graph construction. 27

8.4. Canonical Equations of Dimensional Chains. 29

8.5. Checking the Accuracy of Design Dimensions. 30

8.6. Checking the allowance scattering field. 30

8.7. Determination of technological dimensions. 31

9.    Selection of cutting modes. 34

9.1. Selection of cutting modes for operation 005 Turning-turret operation. 34

9.2. Selection of cutting modes for operation 010 Vertical - milling operation. 35

9.3. Selection of cutting modes for operation 015 Vertical drilling operation. 36

9.4. Selection of cutting modes for operation 020 Round grinding operation. 37

9.5. Selection of cutting modes for operation 025 In-grinding operation. 37

10.      Determination of the technical norm of time. 41

11.      Adjustment dimensions..  45

12.      Design of the device. 50

12.1. Choice of analogue of the device. 50

12.2. Accurate calculation of the device. 50

12.3. Calculation of the components of cutting forces. 51

12.4. Calculation of the clamping force of the workpiece in the device. 51

12.5. Calculation of the drive of the device. 53

Bibliography. 54