一、前言在一般的单动冲床上,是不能进行深拉深工艺的,更不能生产超过行程允许的深拉深件。由于缺少压边装置和冲床行程不足的限制。一方面拉深件起皱使深拉深无法进行,另一方面也无法将零件从模具中取出。若要使单动冲床能进行超行程的深拉深工 First, the foreword In the general single action punch, can not be deep drawing process, but can not produce more than stroke allowed deep drawing. Due to the lack of blank holder and punch stroke limit. On the one hand, drawing deep-wrinkled parts can not deep drawing, on the other hand can not be removed from the mold parts. To make single-action punch can be super-stroke deep drawing