Most of the steel is stamped, and stamping can produce workpieces with stiffeners, ribs, undulations or flanging that are difficult to manufacture in other ways to increase their rigidity. Moreover, the stamping parts are thin, uniform, light and strong compared with the castings and forgings. The precision of the workpiece can reach micron level, and the repeating precision is high and the specifications are the same. The holes and the bosses can be punched out.

     The stamping part is a forming method of applying a force to a plate, a strip, a pipe, a profile, and the like by a press and a mold to cause plastic deformation or separation to obtain a workpiece of a desired shape and size. In the process, it will inevitably encounter some problems, how to deal with and deal with it?

    When the cross-section quality and dimensional accuracy of the workpiece are required to be high during the processing of the stamping part, the trimming process may be added after the punching process or the precision punching process may be directly used. In order to improve the stability of the precision stamping process, it is sometimes necessary to increase the number of processes to ensure the quality of the stampings.

    In many cases, the number of processes for a curved member depends primarily on the complexity of its structural shape, depending on the number of bend angles, relative position, and direction of bending. When the bending radius of the bending member is less than the allowable value, a shaping process is added after the bending.

    Similarly, the number of processes of the drawn parts is related to the material properties, the drawing height, the number of drawing steps, the drawing diameter, the material thickness, etc., and can be determined by drawing process calculation. When the depth of the fillet is small or the dimensional accuracy is high, a shaping process is required after the drawing.

   On this basis, the number of stamping parts must be determined in accordance with the company's existing mold making capabilities and stamping equipment. The mold-making ability should ensure the corresponding improvement of the mold processing and assembly precision, otherwise the number of processes can only be increased.

  In the case of punching a simple shape of a workpiece, a single-step mold is used; instead, a stamping member having a complicated shape is punched out, and since the structure or strength of the mold is limited, the inner and outer contours thereof are divided into several parts, and multiple punching processes are required.