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摘要：
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研究了一种单工步无飞边冲孔工艺 ,对该工艺与三工步无飞边冲孔工艺进行了对比研究 ,其模具结构简单 ,操作方便 ,制造精度及费用低 ,孔剪切口光洁剪切带长度达到材料厚度的80 % ,提高了孔的尺寸及形位精度 ,在工程生产中具有很高的实际应用价值。
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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.
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基金项目：
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河南省科技攻关项目 ( 991110 352 )
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作者简介：
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参考文献：
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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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