Study on Blanking of Thick Steel Plate and Failure of Punch

Abstract

Through the study of the blanking mechanism, it is found that the blanking clearance and the convex die cutting edge radius seriously influence the quality of fracture surface, the wear depth of the punch and the load of the punch. Establishing the appropriate models, it is applied finite element analysis software Deform-3D to simulate and analyze the above forming parameters. Obtain the curves between the forming parameters and the quality of fracture surface, the wear depth of the punch and the load of the punch, optimizing the optimal forming parameters. On these bases, presents 5 solutions to improve the punch structure. Find that the comprehensive performances of internal spherical punch is best by comparing the quality of fracture surface, the wear depth of the punch and the max principal stress of the punch.