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本文概要介绍国外精密冲压技术的当前水平及其发展方向。精冲是精密冲压的简称,是在普通冲裁基础上发展起来的一种精密冲压加工技术。主要特点是在三动专用精冲压力机上采用特殊结构的精冲模具,对原材料实行强力压边和反顶施压,然后再进行冲压。从而获得尺寸允差小,形位精度高,剪切面光洁、平整的精密冲压零件。它们不需要再进行后续切削加工,可直接
This article outlines the current state of precision stamping technology abroad and its development direction. Fine blanking is the abbreviation of precision blanking, which is a precision blanking technology developed on the basis of ordinary blanking. The main feature is the use of special precision punching machine in the three moving fine punching die, the implementation of the raw material of the strong pressure side and anti-top pressure, and then stamping. To obtain the size tolerance small, high-precision position, the shearing surface clean, smooth precision stamping parts. They do not need to be followed by cutting, can be direct