Transactions of Materials and Heat Treatment

Title：Practical experiment research on new blanking process with dual-positive-clearance for spoke big hole

Authors： LU Xian-feng1 HU Zhi-peng1 3 LI Hu-feng1 XU Lan-feng2 HUANG Qi-hua2 LI Jia-ning2(1.School of Mechanical and Electrical Engineering Nanchang University Nanchang 330031 China 2.Vehicle Framework Workshop JMC Nanchang 330001 China 3.Institute of Material Res

Unit：

KeyWords： piercing die stepped-punch dual-positive-clearance blanking burnish length

ClassificationCode：TG386.2

year,vol(issue):pagenumber：2008,33(4):51-53

Abstract：

Based on the theory of dual-positiveclearance blanking and made use of piercing dies for big hole of automobile spoke which had been discarded in production,a new piercing die for big hole was assembled only with amending and processing on cutter-edge of the original punch.Under the previous manufacturing conditions,blanking experiments were carried out and was obtained advancement The burnish length in the cross-section of big hole was more than half of material thickness,which was twice over the original burnish length.The relative analysis was done.

Funds：

江西省“十五”重点学科建设项目——材料加工工程学科建设资助项目

Reference：

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[3]中国机械工程学会,中国模具设计大典编委会.中国模具设计大典:第3卷冲压模具设计[M].南昌:江西科学技术出版社,2003.
[4]周开华.简明精冲手册[M].2版.北京:国防工业出版社,2006.
[5]卢险峰,胡志鹏,戴源德,等.双重正间隙冲裁法[P].国家发明专利申请号:200510126576.3.

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