The processing of metal stamping parts is a kind of production technology, which can make the sheet metal directly subject to the deformation force and deform in the mold with the help of the power of conventional or special stamping equipment, so as to obtain a certain shape, size and performance of product parts. Sheet metal, die and equipment are the three elements of stamping. Stamping is a kind of metal cold deformation processing method. 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 the material forming engineering technology.
Metal stamping used by the die known as stamping die, referred to as the die. Stamping die is a special tool for batch processing materials (metal or nonmetal) into required stamping parts. The stamping die is very important in stamping. If there is no die that meets the requirements, it is difficult to carry out the batch stamping production; without the advanced die, the advanced stamping process can not be realized. Stamping process and die, stamping equipment and stamping materials constitute the three elements of stamping process, only when they are combined can stamping parts be obtained.
Compared with other methods of mechanical processing and plastic processing, stamping has many unique advantages in both technical and economic aspects. The main performance is as follows.
1) The production efficiency of stamping process is high, and the operation is convenient, and it is easy to realize mechanization and automation. This is because stamping depends on the stamping die and stamping equipment to complete the processing, ordinary press stroke times can reach dozens of times per minute, high-speed pressure can reach hundreds or even more than 1000 times per minute, and each stamping stroke may get a stamping part.
2) stamping dies as like as two peas, which ensure the size and shape accuracy of stamping parts, and generally do not damage the surface quality of stamping parts, and die life is generally longer, so stamping quality is stable, interchangeability is good, and has the same characteristics.
3) Stamping can produce parts with large size range and complex shape, such as stopwatch of clock, longitudinal beam of automobile, covering parts, etc. in addition, the cold deformation hardening effect of material during stamping makes the strength and rigidity of stamping higher.
4) Generally, there is no chip and broken material in stamping, the consumption of material is less, and other heating equipment is not needed. Therefore, stamping is a kind of material saving and energy-saving processing method, and the cost of stamping parts is low.