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摘要：
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依据双重正间隙冲裁新工艺的原理,利用已在生产中被更换下来的多副旧汽车钢圈轮辐冲大孔模,针对原冲头工作刃口,按新工艺原理要点给以修改设计,组装成新的冲大孔模。在原加工条件下,进行了多次冲裁试验,获得的轮辐大孔断面剪切面高度大于料厚一半,达到原剪切面高度的两倍,并进行了相关分析。
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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.
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基金项目：
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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
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作者简介：
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参考文献：
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[1]卢险峰.冲压工艺模具学[M].2版.北京:机械工业出版社,2006.
[2]中国机械工程学会锻压学会.锻压手册:第2卷冲压[M].2版.北京:机械工业出版社,2002.
[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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