Patent ID: 6530255
Filing Date: 2003-03-11
Classification: B21D

Abstract:
A forming press apparatus for manufacturing a forming by press-forming a pre-drawn workpiece in a plurality of successive forming steps, comprising:a single press; upper and lower die sets mounted to the press and carrying en bloc a plurality of forming die pairs corresponding to the plurality of forming steps, the plurality of forming die pairs including a trimming die pair for trimming a pre-drawn forming, a coarse bending die pair for carrying out coarse bending on a trimmed forming thus obtained, and a finish bending die pair for carrying out finish bending on a coarsely bent forming thus obtained, so that the plurality of forming steps can be carried out simultaneously, each of the forming die pairs having a spring-biased pressing pad for holding the pre-drawn workpiece while a corresponding one of the forming steps is carried out, the plurality of forming die pairs being disposed on the die sets in the order of the forming steps, each of the forming die pairs having an upper die with a pressing surface and a lower die; and a moving member mounted on the lower die set wherein said pressing surface presses on said moving member and said moving member thereby moves inward toward the lower die to further form the workpiece.