The method of stamping parts in molding is simulation.

  The slip line field of Dalian stamping parts can only be established by the relatively simple shape stamping parts, and the mathematical expression of the slip line can only be obtained from the solution of the characteristic square under the very simple boundary conditions. Moreover, the slip line method is difficult to solve in the blank of stamping parts because of the complicated mathematical operation. It is widely applied in actual production. At the same time, the geometric mapping method is also one of the blank design methods for stamping parts. Its theoretical basis is to realize the mapping from workpiece to blank according to some assumptions without considering the boundary conditions such as deformation force, stress-strain relationship and boundary friction.

  But nowadays, the method widely used in blank forming of stamping parts is simulation method. Under certain assumptions, according to the similarity of mathematical description of many physical problems, the processing of metal stamping parts of sheet metal flange is simulated by means of mathematical similarity theory and model composed of other physical media. The power of the pressing equipment makes the sheet metal directly deformed by the deformation force in the die, so as to obtain the production technology of the product parts with certain shape, size and performance. It can be seen that sheet metal, mold and equipment are the three elements of stamping parts processing. Not only that, metal stamping processing is also a kind of metal cold deformation processing method, it is one of the main methods of metal plastic processing, but also belongs to material forming engineering technology. Compared with castings and forgings, the hardware stamping parts have the characteristics of thin, uniform, light and strong.