What is stamping?

Stamping processing is the production technology of using the power of conventional or special stamping equipment to directly subject the sheet metal to the deformation force and deform in the mold, so as to obtain product parts with a certain shape, size and performance. Sheet material, mold and equipment are the three elements of stamping processing. Stamping is a method of metal cold deformation processing. Therefore, it is called cold stamping or sheet metal stamping, or stamping for short. It is one of the main methods of metal plastic processing (or pressure processing), and it also belongs to material forming engineering technology.

The die used in stamping is called stamping die, or die for short. The die is a special tool for batch processing of materials (metal or non-metal) into the required stamping parts. Punching dies are very important in stamping. Without a die that meets the requirements, mass stamping production will be difficult; without advanced stamping dies, advanced stamping processes cannot be realized. The stamping process and die, stamping equipment and stamping materials constitute the three elements of stamping processing. Only when they are combined can stamping parts be obtained. Compared with other methods of mechanical processing and plastic processing, stamping processing has many unique advantages in both technical and economic aspects. (Guide: Sheet metal processing precautions and processing flow introduction)

The main performance is as follows.

(1) The stamping process has high production efficiency, convenient operation, and easy realization of mechanization and automation. This is because stamping relies on punching dies and stamping equipment to complete the processing. The number of strokes of ordinary presses can reach dozens of times per minute, and the high-speed pressure can reach hundreds or even thousands of times per minute. May get a stamped part.

(2) When stamping, because the mold guarantees the size and shape accuracy of the stamping parts, and generally does not damage the surface quality of the stamping parts, and the life of the mold is generally longer, the quality of the stamping is stable, the interchangeability is good, and it has Exactly the same characteristics.

(3) Stamping can process parts with a large size range and more complex shapes, such as stopwatches as small as clocks and clocks, as large as automobile longitudinal beams, covering parts, etc., plus the cold deformation and hardening effect of materials during stamping, stamping The strength and rigidity are high.

(4) Stamping generally does not generate chips and scraps, consumes less material, and does not require other heating equipment, so it is a material-saving and energy-saving processing method, and the cost of stamping parts is lower. Because of the superiority of stamping, stamping has a wide range of applications in various fields of the national economy. For example, in aerospace, aviation, military industry, machinery, agricultural machinery, electronics, information, railways, post and telecommunications, transportation, chemical industry, medical equipment, household appliances and light industry, there are stamping processes. Not only the entire industry uses it, but everyone has direct contact with stamping products. There are many large, medium and small stamping parts on airplanes, trains, automobiles, and tractors. The car body, frame, rim and other parts are all stamped out. According to relevant survey statistics, 80% of bicycles, sewing machines, and watches are stamped parts; 90% of TV sets, tape recorders, and cameras are stamped parts; there are also food metal tank shells, steel boilers, enamel bowls and stainless steel tableware. They are all stamping products that use molds; even computer hardware cannot lack stamping parts.

However, the molds used in stamping processing are generally specialized. Sometimes a complex part needs several sets of molds to be processed and formed, and the mold manufacturing has high precision and high technical requirements. It is a technology-intensive product. Therefore, only when the stamping parts are produced in large batches, the advantages of stamping processing can be fully realized, so as to obtain better economic benefits. Of course, stamping processing also has some problems and shortcomings. It is mainly manifested in the noise and vibration generated during the stamping process, and the operator's safety accidents occur from time to time. However, these problems are not entirely due to the stamping process and the mold itself, but mainly due to traditional stamping equipment and backward manual operations. With the advancement of science and technology, especially the development of computer technology, along with the advancement of mechatronics technology, these problems will surely be solved as soon as possible.

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