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Introduction to stamping process
Sep 04, 2017

Introduction to stamping process

The stamping process is the production technology of the product parts with certain shape, size and performance by means of the power of the conventional or special stamping equipment to deform the sheet metal directly in the die and deform it. Sheet metal, die and equipment are the three elements in stamping process. Stamping is a method of cold metal deformation processing. Therefore, it is called cold stamping or sheet metal stamping, referred to as stamping. It is one of the main methods of metal plastic processing (or pressure processing), and also belongs to material forming engineering technology.

Stamping die used as stamping die, referred to as die. Die is a special tool for processing material (metal or non-metal) into batch parts. The stamping die is very important in stamping. There is no die which meets the requirement. It is difficult to carry out batch stamping. Without advanced stamping die, the advanced stamping process can not be realized. Stamping process and die, stamping equipment and stamping materials constitute the three elements of stamping processing, only they can be combined with each other to obtain stamping parts.

Compared with other methods of mechanical processing and plastic processing, stamping has many unique advantages in both technical and economic aspects. The main features are as follows.

(1) the production efficiency of stamping is high, and the operation is convenient. It is easy to realize mechanization and automation. This is because the stamping dies and stamping equipment rely on to complete the processing, ordinary press trips per minute up to dozens of times, high pressure per minute up to hundreds or even thousands of times, and each press stroke may get a red piece.

(2) when the stamping die to ensure the dimension and shape precision stamping parts, and generally do not damage the surface quality of stamping, and die life is generally longer, so the stamping quality, good interchangeability, "as like as two peas" feature.

(3) stamping processing size range is large, complicated shape parts, such as a small clock stopwatch, large car rails panels, plus the stamping material hardening effect of cold deformation, punching strength and stiffness were higher.

(4) the stamping usually has no chip crumbs, the material consumption is less, and no other heating equipment, so it is a kind of material saving method, the cost of stamping parts is lower.

As stamping has such advantages, stamping process has been widely used in various fields of national economy. For example, in aerospace, aviation, military, machinery, agricultural machinery, electronics, information, railways, posts and telecommunications, transportation, chemicals, medical equipment, household electrical appliances and light industry and other departments, there are stamping processing. Not only is it used in industry as a whole, but everyone has direct contact with stamping products. Like airplanes, trains, cars, tractors, there are lots of big, medium and small stampings. Car body parts, frame and rim are punching out. According to the survey, bicycles, sewing machines, watches there are 80% stampings; TV, tape recorders, video cameras there are 90% stamping parts; and food metal shell, steel boiler, enamel basin and stainless steel tableware, all products using stamping dies; even the lack of computer hardware is also not stamping.

However, stamping dies used in general is specific, sometimes a complex part needs several sets of molds can be formed, and the mold manufacturing of high precision, high technical requirements, is a technology intensive products. Therefore, only in the production of large quantities of stamping parts, the advantages of stamping processing can be fully reflected in order to achieve better economic results.

Of course, the stamping process also has some problems and shortcomings. Mainly in the process of noise and vibration caused by two kinds of pollution, and the operator's security incidents have occurred. However, these problems are not entirely due to the stamping process and the mold itself, but mainly due to the traditional stamping equipment and backward manual operation. With the progress of science and technology, especially the development of computer technology, with the progress of mechatronics technology, these problems will be resolved as soon as possible, two perfect.

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