Because of the outstanding characteristics of stamping tool, it has been widely used in the production of various fields of national economy. For example, in aerospace, aviation, military, machinery, agricultural machinery, motor, electronics, railway, posts and telecommunications, transportation, chemical, medical equipment, daily appliances, and light industry and other fields, there are stamping processing. According to the relevant survey statistics, in the automobile, motorcycle, agricultural machinery products, stamping parts account for about 75%-80%; Bicycles, about 90%; In the aviation and aerospace industry, stamping parts also occupy a large proportion; There are food metal cans box, steel pot pot, enamel bowl and stainless steel tableware, almost are stamping processing products; Even computer hardware is lacking in stamping parts.