大直径差阶梯筒形件成形工艺研究

通过对大直径差的阶梯筒形件的成形工艺分析，提出从平板毛坯上先胀形后拉深小直径形状，再拉深大直径形状的新方法，从而大大减少拉深工序数，降低生产成本。

This paper analyzes the forming process of the stepped cylindrical workpieces, which always have more difference in diameters. A new method is put forward,in the process of which the plate is expanded first, then drawed into the small diameter from expanded shape and hence the larger diameter finally formed. Thus the number of drawing is reduced and the production cost is reduced.