THE STUDY OF VIRTUAL DEBUGGING OF AUTOMOBILE MOLDS BASED ON AUTOFORM

摘要

By using AUTOFORM software, virtual debugging of automobile molds is analyzed and investigated, which consists of setting up stamping technological scheme, defining the additional form of technology and their correlative stamping parameters. According to the finite element stimulating results, the data, such as the forming, the changes of thickness, the size of stress and strain, and material FLD of sheet metal are obtained. The time and the part of cracking and wrinkling, and the geometric dimensions are shown dynamically in the forming processes. By analyzing the finite element stimulating results, the correlative parameters of fillets of convex-concave dies, blank sizes, frictional forces, pressing edge forces, shapes and sizes of braking beads and the technological compensation can be adjusted. Acceptable punches whose stamping defects are eliminated can be gotten with the help of careful calculation. Therefore, virtual debugging of molds can be implemented before they are machined.