Transactions of Materials and Heat Treatment

Title：Research of a single-step punching as contrasted to three-step punching without burr

Authors： Zhongyuan Institute of Technology Li Jianhua Fan Weifu Zhan Jinhao

Unit：

KeyWords： Single step Three step Burr Punching

ClassificationCode：TG386

year,vol(issue):pagenumber：2002,27(4):29-30

Abstract：

The paper advances a process of single step punching without burr, and researches the process as contrasted to a three step punching without burr, The die structure of the single step punching are simple,and convenience to operate. The precision of the die and the die cost are low.The length of bright shearing fracture to the hole reaches 80% of the thickness of the plate workpiece. The precision of size, shape and position to the hole has been raised extremely.The process of the single step has a great worth in the engineering manufacturing.

Funds：

河南省科技攻关项目 ( 991110 352 )

Reference：

1　李建华模锻件无毛刺冲连皮锻压技术,2001,26(1)
2　李建华一种往复冲裁工艺郑州纺织工学院学报,1997,8(1)

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