Metal stamping parts 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 produce in batch; if the technology of stamping die is not improved, the stamping process can not be improved. Stamping process and die, stamping equipment and stamping materials constitute the three elements of stamping process. Only when they are combined with each other can stamping parts be produced.
Compared with other processing forms such as mechanical processing and plastic processing, metal stamping processing has many advantages in terms of technology and economy. The main manifestations are as follows:
(1) 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 production cost of stamping parts is low.
(2) as like as two peas in the stamping process, the stamping parts are ensured to have the size and shape accuracy, and generally do not damage the surface quality of stamping parts, while the die life is generally longer.
(3) Metal stamping parts can process parts with large size range and complex shape, such as stopwatch of clock and watch, longitudinal beam of automobile and cage cover. In addition, the cold deformation hardening effect of materials during stamping makes the stamping strength and rigidity higher.
(4) The production efficiency of metal stamping parts processing is high, and easy to operate, and easy to realize mechanization and automation. Because stamping depends on the stamping die and stamping equipment to complete the processing, the ordinary press stroke times per minute can reach dozens of times, high-speed pressure can reach hundreds or even more than 1000 times per minute, and each stamping stroke can get one punch, so the production of metal stamping parts can achieve high-efficiency mass production.
Because of the superiority of stamping, metal stamping parts processing is widely used in various fields of national economy. For example, in aerospace, aviation, military industry, machinery, agricultural machinery, electronics, information, railway, post and telecommunications, transportation, chemical industry, medical appliances, daily electrical appliances and light industry, there are stamping processing. Not only is it used by the whole industry, but everyone has direct contact with stamping products: for example, there are many large, medium and small stamping parts on airplanes, trains, automobiles and tractors; the body, frame and rim of cars are all processed by stamping. According to relevant investigation and statistics, 80% of bicycles, sewing machines and watches are stamping parts; 90% of TV sets, tape recorders and cameras are stamping parts; there are also metal food cans, steel precision boilers, enamel pots and bowls and stainless steel tableware. All of them are stamping products, and even the computer hardware can not do without stamping parts.
However, the dies used in metal stamping process are generally special. Sometimes, a complex part needs several sets of dies to process and form. The mold manufacturing precision is high, and the technical requirements are high, which is a technology intensive product. Therefore, only in the case of a large number of stamping parts, the advantages of metal stamping can be fully reflected, so as to obtain better economic benefits.
