在苏联弗拉基米尔自动仪器工厂里,曾经使用一种新型结构的冲模——在切料模内镶有可调整凹模的冲模,用它来冲制像图1那样的工件,效果相当好。这种工件是在成形后,再冲裁外形轮廓和冲出全部圆孔的。原来要用两付冲模,也就是用一付冲模冲裁外形轮廓和冲出3个φ4.5孔,用另一个冲模冲出φ25、φ16 In the Vladimir U.K. factory in the Soviet Union, a new type of die was used - a die with an adjustable die was inserted into the die and the workpiece was machined like the one in Figure 1 and the result was quite good . The workpiece is formed, and then blanking contour and out of all the holes. The original use of two pairs of die, which is punched with a pair of die contour shape and out of three φ4.5 holes, with another punch out φ25, φ16