Planning criteria: the planned stamping parts must be satisfied with the product application and skill function, and can be easily assembled and repaired. The planned stamping parts are necessary to improve the utilization rate of metal data, reduce the types and standards of data and reduce the consumption of data as much as possible. Choose low-priced materials as promised, and try to punch the parts without waste and with less waste as much as possible. It is necessary for the planned stamping parts to be simple in shape and reasonable in structure, so as to simplify the die structure and the number of processes, that is, to finish the processing of the whole part with the least and simplest stamping process, and to reduce the need to use other methods for processing, and to facilitate the stamping operation, facilitate the arrangement of mechanized and automated production, and improve the labor productivity. Under the condition of ensuring normal operation, the planned stamping parts should make the requirements of standard precision grade and surface roughness grade as low as possible, which is conducive to product exchange, reducing waste products and ensuring stable product quality. The planned stamping parts should be conducive to the use of existing equipment, process equipment and process flow to process them as much as possible, and to the extension of the service life of the stamping die. The use scale of car wiper chassis The stamping of car occupation in the field of car wiper chassis hardware stamping parts. Mainly drawing. In China, this part is mainly concentrated in car factories, tractor factories, aircraft manufacturers and other large factories, and independent large-scale stamping and drawing factories are rare. Stamping of professional parts such as cars. The first thing is punching and shearing.

Many of some enterprises belong to standard parts factories, and there are also some independent stamping factories. Now there are many such small factories near some car factories or tractor factories. Electrical equipment stamping factory. This kind of factory is a new industry. With the development of electrical appliances, this branch factory will be concentrated in the south. Daily necessities stamping factory. Making some handicrafts, tableware, etc., these factories have also made great progress in recent years.

Stamping plant for household electrical appliance parts. These factories emerged only after the development of household appliances in China, and most of them were scattered in household appliance enterprises. Special stamping enterprise. For example, the stamping of aviation parts belongs to this kind of enterprises, but these craft factories also belong to some big factories.