图1所示为某厂生产的钮扣配件,材料为软铝皮,厚度为0·3mm,厂方称其为“铝帽”。该产品的生产批量为50万件/月。工件要求筒壁直,周边平整,无毛刺,外观与尺寸要求较高。图1零件结构该厂原采用向上拉深、打料杆打料的复合模进行冲制生产,但在实际生产中,存在三个方面的问题:(1)落 Figure 1 shows a factory button accessories, the material is soft aluminum, a thickness of 0.3mm, the factory called “aluminum hat.” The production volume of the product is 500,000 pieces / month. Workpiece requires straight tube wall, the surrounding flat, no burrs, the appearance and size of the higher requirements. Figure 1 Parts Structure The factory originally used to pull up, playing a shot hit the compound die for punching production, but in actual production, there are three aspects of the problem: (1)