组合冲模的出现和在生产上的实际应用,为冲件的小批和试制生产开掘了一条比较经济有效的途径。众所周知,在电器、仪表,无线电产品中,有一些冲件的外形尺寸很小,厚度较薄,而且多为有色金属,因此对模具间隙和凸模、凹模互相的配合要求极严,从而给模具制造带来了一定的困难。但如果用组合冲模加工,由于定位和安全等方面的问题,实践证明也不是一 The emergence of combination die and its practical application in production have found a more economical and effective way for small batch and trial production of stamping parts. As we all know, in electrical appliances, instruments, radio products, some of the pieces of the small size, thinner, and mostly non-ferrous metals, so the mold gap and the punch and die with each other very stringent requirements to give Mold manufacturing has brought some difficulties. However, if the combination of die processing, due to positioning and safety and other issues, the practice proved not to be a