ORGANIZATION OF CAPITAL REPAIR OF UNIVERSAL CYLINDRICAL GRINDING MACHINE MODEL 3B12

Introduction.. 4

1........ ORGANIZATIONAL PART. 5

1.1 Selection of repair organization at the enterprise. 5

1.2 Determination of the category of repair complexity of the equipment. 5

1.3 Structure of the repair cycle. 6

1.4 Duration of the repair cycle, between repairs and inspections periods  6

1.5 Duration of equipment downtime during repairs. 7

1.6 Schedule of planned preventive repairs for this type of equipment  8

1.7 Calculation of the annual program of the repair and mechanical shop. 9

1.8 Determination of the annual labor intensity of repair work. 10

1.9 Determination of the quantity and composition of equipment in the RMC.. 12

1.10 Determination of the area of the repair and mechanical shop. 15

2 Technological part.. 17

2.1 Purpose of the equipment, its design and structure. 17

2.2 Description of the design and purpose of the repaired unit. 18

2.3 Dismantling of equipment. 20

2.5 Description of the repaired part. Chemical composition, physical and chemical properties of the material of the repaired part. 24

2.6 Technology process of repairing the part. Calculation of labor intensity of the repair. 26

2.7 Installation of equipment. Installation drawing of the equipment. Calculation of the foundation base pressure. 28

2.8 Inspection of the equipment after repair. Scheme for checking the machine for geometric accuracy. 31

2.9 Measures for operation, maintenance, and lubrication of the equipment. 34

3 ECONOMIC PART. 40

3.1 Determination of the number of workers by professions. 40

3.2 Determination of the annual wage fund for repair workers. 41

3.3 Preparation of the estimate of shop expenses. 44

3.4 Preparation of the estimate of costs for major repairs. 47

3.5 Technical and economic indicators of the execution of repair work. 49

CONCLUSION.. 50

List of used sources  51

The magnitude of the repair complexity category of various types of equipment depends on their design and technological features, as well as weight characteristics.

The initial data for determining the repair complexity of various 

models of equipment are the technical specifications contained in the passports.

The universal cylindrical grinding machine 3B12 is designed for grinding cylinders, shallow and steep cones, cylindrical and conical holes.

Grinding can be performed both in fixed centers and in a chuck.

The sliding blocks of the grinding spindle and the grinding spindle itself are made rotatable, which allows for grinding cones whose length exceeds the width of the circle.

By rotating the front spindle or the upper rotary table, it is possible to grind conical holes.

The machine automates the longitudinal movement of the table and the transverse feed of the grinding wheel for each table stroke. Both of these movements can also be performed manually.