How to prevent wrinkling of Dalian stamping parts

How to prevent wrinkling of Dalian stamping parts

  At present, the numerical technology of sheet metal forming process has made great progress. According to the forming load, the geometric deformation, the stress and strain distribution and the processing condition of the finite element simulation technology, the geometric shape, the material grade and the boundary condition of the die are adjusted to improve the die design. The section line of the die is described by several non uniform rational B spline curves. Each section of the B spline curve with different density, the dangerous section description mold that can be better, but also can improve the efficiency of the contact judgment. Metal stamping industry is an important branch in the metal forming industry. It is the basic industry of machinery manufacturing industry.

  According to the process classification, can be divided into two major categories of separation process and forming process. The separation process is also called blanking, the purpose of which is to make the metal stamping parts separated from the sheet along a certain contour line, while ensuring the quality requirements of the separation section. The purpose of the forming process is to make the plastic deformation of the sheet material without breaking the blank, and to make the required shape and size of the workpiece. Wrinkling is one of the most important and difficult problems in stamping production. Wrinkle defects will cause a lot of adverse consequences, serious will form a stack. Wrinkle will have a serious impact on the appearance of the surface of parts, especially in the coating after severe wrinkling will make parts cannot be repaired, leading to the scrap parts.