工作中,如果碰到紧急的而周期又短的特大孔眼冲制任务时,可利用图中所示的简易模具来顺利完成。其中,冲模上的定位销应与待冲孔眼的中心孔配合,冲头的半径R应符合待冲孔眼直径的一半。这样只要将工件依次旋转,大孔即可通过逐次冲切而最后完成。用这种方法冲制的孔眼,其边缘接口处十分光滑, Work, if you encounter an urgent and short cycle of large holes punching task, you can use the simple mold shown in the figure to successfully complete. Among them, the positioning pin on the die should be punched hole center hole with the punch radius R should be consistent with the hole diameter to be punched half. So long as the workpiece in turn, large holes can be punctured by one by one and finally completed. Hole punched in this way, the edge of the interface is very smooth,