我厂矩形和椭圆形拉伸零件(见图1)的切边和切底工序过去是在一付或两付模具上分几次来完成的,这种方法不仅切边质量差,而且效率也低。最近几年我们设计和制造了几付浮动凹模切边模和浮动凸模切底模,通过几年的生产实践,证明这种切边模和切底模不仅冲裁质量好,而且生产效率也比老方法提高四倍以上。 I plant rectangular and oval stretch parts (see Figure 1) trimming and cutting process in the past is to pay in one or two pairs of molds to be completed in several times, this method not only the poor quality of the margin, but also efficiency low. In recent years, we have designed and manufactured several pairs of floating die trimming die and floating die cutting die, after several years of production practice to prove that the trimming die and cutting die not only punching good quality, and production efficiency More than four times more than the old method.