Stamping is the power of conventional or special stamping equipment, so that the sheet in the mold is directly subjected to deformation forces and deformation, so as to obtain a certain shape, size and performance of the product parts of the production technology. Sheet, mold and equipment is the three elements of stamping. Stamping is a metal cold deformation processing method. Therefore, it is called cold stamping or sheet metal stamping, or stamping for short. It is one of the main methods of metal plasticity processing (or pressure processing), and also belongs to the material molding engineering technology.
The mold used for stamping is called a stamping die, or stamping die for short. The die is a special tool for batch processing of materials (metallic or non-metallic) into the required punches. Stamping die in stamping is crucial, no meet the requirements of the stamping die, batch stamping production is difficult to carry out; no advanced die, advanced stamping process can not be realized. Stamping process and molds, stamping equipment and stamping materials constitute the three elements of stamping processing, only they are combined with each other in order to come up with stamped parts.
Compared with other methods of machining and plastic processing, stamping process has many unique advantages in terms of technology and economy. The main performance is as follows.
(1) the high productivity of stamping, and easy to operate, easy to realize mechanization and automation. This is because stamping is relying on the stamping die and stamping equipment to complete the process, the number of ordinary press strokes per minute up to dozens of times, high-speed pressure per minute up to hundreds or even thousands of times above, and each stamping stroke may be a punch.
(2) Stamping due to the mold to ensure that the size and shape of the stamped parts of the precision, and generally do not destroy the surface quality of the stamped parts, and the life of the mold is generally longer, so the quality of the stamping is stable, interchangeable, and has the characteristics of the "one and the same".
(3) stamping can be processed out of a larger range of sizes, shape more complex parts, such as small to the stopwatch, large to the longitudinal beam of the car, cover, etc., coupled with the cold deformation of the material hardening effect of stamping, stamping of the strength and stiffness are higher.
(4) Stamping is generally not generated by chips and debris, less material consumption, and does not require other heating equipment, so it is a material-saving, energy-saving processing methods, the cost of stamped parts is low.
Because stamping has such a superiority, stamping is widely used in various fields of national economy. For example, in the aerospace, aviation, military, machinery, agricultural machinery, electronics, information, railway, post and telecommunications, transportation, chemical industry, medical equipment, daily appliances and light industry and other sectors have stamping processing. Not only the whole industry uses it, but also everyone is directly related to stamping products. Like airplanes, trains, automobiles, tractors, there are many large, medium and small stamping parts. Small car body, frame and rim and other parts are stamping processed out. According to relevant survey statistics, bicycles, sewing machines, watches, 80% of the stamping parts; TV, recorders, video cameras, 90% of the stamping parts; and food metal cans and shells, steel pots and pans stove, enamel pots and bowls and stainless steel cutlery, all of which are the use of molds of the stamping process products; even the computer hardware is also missing in the stamping parts.
However, the molds used in stamping are generally specialized, sometimes a complex part requires several sets of molds to be processed and shaped, and the molds are manufactured with high precision and high technical requirements, and are technology-intensive products. Therefore, only in the case of larger production batches of stamping parts, the advantages of stamping processing can be fully realized, so as to obtain better economic benefits.
Of course, there are some problems and shortcomings of stamping. Mainly in the stamping processing of noise and vibration produced by the two public nuisance, and the operator's safety accidents occur from time to time. However, these problems are not entirely due to the stamping process and 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 solved as soon as possible.
Precision stamping can generally be called a molding, minimize the processing after stamping.
Ordinary stamping is stamping is finished, still need post-processing.
That's all I know
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