Research on Fine Blanking Process with Stepped-Edge Punch
The fine blanking process with a stepped-edge punch was researched by finite element method (FEM) and experiment investigation. Finite element analysis showed that the hydrostatic stress of the blank around the edges changes a little during fine blanking process using a stepped-edge punch with negative clearance. The burnish zone of sheared surface increases with the increase of the relative negative clearance. The reasonable forming parameters were presented by a lot of experiment investigations. Parts of three kinds of materials, Q235 steel, copper and industrial aluminum, were formed using fine blanking process with a stepped-edge punch. Full burnish zone were obsearved for all the parts.
Kai Cheng, Yongxian Liu, Xipeng Xu and Hualong Xie
S. J. Qin et al., "Research on Fine Blanking Process with Stepped-Edge Punch", Applied Mechanics and Materials, Vols. 16-19, pp. 495-499, 2009