PROCUREMENT PROCESS TOOLING DESIGN

Contents

Contents

Introduction

1. Design of stamped forgings

1.1 Selection of die parting surface

1.2 Determination of initial forging index

1.3 Purpose of allowances, tolerances and allowances for machining of forgings

1.4 Determination of jumper parameters in the hole mark

1.5 Determination of the forging diameter along the perimeter of the shell cut and the diameter of the hole to be pierced

2. Calculation and construction of hammer stamp

2.1 Design of the shroud groove

2.2 Determination of stock weight

2.3 Determination of weight of falling parts of hammer

2.4 Determination of profile and dimensions of the initial workpiece

2.5 Determination of dimensions of hammer die and dimensions of shanks of upper and lower dies

Conclusion

List of literature

Application

COURSE PROJECT ASSIGNMENT

1. Course Project Topic Procurement Process Tooling Design

2. Terms of Reference

Design stamped forging for Worm Wheel part (Steel 45);

Design a hammer die for stamped forging;

Draw up forging and hammer stamp drawings.

3. Execution of the course project

3.1. Calculation and explanatory note on 15 sheets of A4 format.

3.2. List of CP graphic material (posters, diagrams, drawings, etc.)

- Gear wheel - 1 sheet of A2 format;

- Gear wheel (forging) - 1 sheet of A2 format;

- Hammer stamp - 1 sheet of A1 format

Introduction

The purpose of the course project is to form practical skills for designing technological systems and processes, developing models of procurement processes in mechanical engineering.

Forging of various shapes and sizes from steel, non-ferrous metals and alloys on hammers, presses and other machines is made by hot stamping. At volumetric stamping on hammers open dies are used, in which along the perimeter of the main stream of the die there is an area groove. The starting material for bulk forging is mainly bar metal, mainly of circular cross-section, cut into blanks. Before deformation, the metal blank is heated in special heating devices. Development of the process of forging by hot stamping includes the following tasks:

1. Develop a forging drawing.

2. Design of die finish stream.

3. Determination of metal deformation forces and selection of punching hammer power.

4. Defines the profile and dimensions of the original workpiece.

5. Construction of a hammer die.

The initial data for developing a forged forging drawing are:

- part drawing with specification and indication of initial (draft) bases of machining;

- a forging release program, which determines the selection of the forging method and the accuracy class of forging.

Conclusion

During the course work, the following tasks were solved:

- defined material group, accuracy class, degree of complexity and initial index of forging for drawing development;

- weight of forging is calculated;

- allowance, allowance and permissible limit deviations of dimensions are defined;

- forging drawing developed;

- design of die finishing stream is performed;

- calculation of the shroud groove is performed;

- the metal deformation force is determined and the punching hammer power is selected;

- the profile and dimensions of the original workpiece have been determined;

- Molotov die is designed and its drawing is developed.