key punching error [计] 键盘穿孔错
This paper introduces cold heading and combined forming process of extrusion and punching for gear cluster, a key part of automotive gearbox.
介绍了汽车变速箱中的一个关键零部件—双联主动齿轮的冷态镦粗、挤压及冲孔的复合成型工艺。
One of the key factors to effect the punching accuracy of multiple-station progressive die is the constitution and structure design of its positioning system.
影响多工位连续模冲压精度的关键因素之一是其定位系统的构成及其结构设计。
A drawing process for sealing cover of automobile connecting rod and a method of chamfering by punching were analyzed. The die structures designed for the key procedures were introduced.
分析了汽车连杆油封盖拉伸工艺及用冲压成形完成倒角的方法，介绍了关键工位的模具结构。
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