Sheet Stamping Technology

Contents

Contents

Introduction

1. Development of "Khomut" part sheet stamping technology

1.1Part Drawing, Processability Analysis

1.2 Discussion of possible versions of part manufacturing and selection of the most rational

1.3 Procurement Calculation (Drilldown)

1.4 Optimization of cutting (when stamping from sheet), determination of cutting coefficient, CMM and consumption rate

1.5 Content and Flow Definition

1.6 Calculation of process transitions

(tool forces and geometry)

2. Stamp Design

2.1 Justification of design selection

2.2 Determination of dimensions of working parts, selection of standard die parts

2.2.1 Determination of die pressure center

2.2.2 Determination of dimensions of working parts of the die

3. Bending Die Design

3.1 Justification of stamp selection

3.2 Calculation of process force during bending

3.3.Determination of dimensions of working parts, selection of standard parts

3.3.1 Definition of matrix dimensions

3.3.2 Selection of guide columns

3.3.3 Selection of guide bushings

3.3.4 Selection of ejector device

3.4 Equipment Selection

3.5 Shank Selection

3.6 Bending Spring Accounting

3.7 Safety Accounting

Bibliographic list

Application

Application

Introduction

Sheet stamping is one of the types of metal forming carried out in dies installed on presses. Cold sheet stamping is one of the most advanced technological methods of production; it has a number of advantages over other types of metal processing, both technically and economically. Sheet stamping involves the use of a starting material in the form of a sheet, strip, tape, roll. As a rule, sheet stamping production is focused on the mass production of parts.

The development of mechanical engineering and metalworking requires further improvement of technological processes and organization of production, increase of its efficiency and increase of labor productivity based on automation of production processes.

Discuss possible manufacturing options for the part and choose the most rational

Combining several operations in one die (for example, bending and punching) would complicate the stamping process, operations would become more time consuming. In view of the fact that this is a small-scale production, it makes no sense to make a complex stamp. This will be economically inefficient and more labour-intensive. It makes sense to make two stamps. Punching die and bending die.

As already mentioned, the "clamp" part has a complex configuration, so it can be manufactured as follows:

Punch holes and cut the contour of a part.

Bending in the second die with one transition.

Stamp Design

Two stamps must be used to obtain the Clamp part. Sequential die for punching and cutting, and simple die for bending.

2.1 Substantiation of design selection.

For cutting stamp - punches:

1) The lower and upper plates have diagonal arrangement of guide elements (columns and bushings), since the upper and lower halves of the die are well centered;

2) The die is attached to the stamping plate by means of grips;

3) Guide bushings - stepped, guide columns - stepped

4) The overall dimensions of the bottom plate shall ensure that the lower part of the die can be fixed: the plate shall protrude beyond the package by a size sufficient for the installation of fastening bolts or tacks.

5) Stamping occurs on failure.

6) A movable extractor is used in the die.

For bending die:

1) The lower and upper plates have a rear arrangement of guide elements (columns and bushings), since they facilitate access to the stamping zone and are convenient for maintenance;

2) The die is attached to the stamping plate by means of grips;

3) Guide bushings - stepped, guide columns - stepped, identical diameters;

4) The overall dimensions of the bottom plate shall ensure that the lower part of the die can be fixed: the plate shall protrude beyond the package by a size sufficient for the installation of fastening bolts or tacks.