The problems in the process of blanking such as the collapse of gear needle and the burr have been solved through up-and-down blanking and increasing hydrostatic pressure of blanking deformation zone.
英
美
- 采用上、下冲裁法,提高变形区静水压力,解决了冲裁中出现的齿尖塌陷、毛刺等缺陷。