屏蔽罩零件(见图1)的生产,过去是先将它引伸成18.5mm以上高度的盒体,然后用一副切角模分四次切出4个转角,再用两副切脚模分别切出6个小脚。按常规,该零件需两次引伸,才能成型,生产周期长,成本高。后经分析,零件成型后,4个转角处高度尺寸是13mm,加上切边余量△h=0.04h后,H_角=13+△h=13 Shielded parts (see Figure 1) production, the past is the first to extend it to 18.5mm above the height of the box, and then use a pair of chamfering mode four times cut out four corners, and then cut the two cut feet die Out of 6 feet. As a general rule, the parts need to be extended twice to form, long production cycle, high cost. After analysis, after the part is formed, the height of the four corners is 13mm, plus the allowance margin △ h = 0.04h, H_ angle = 13 + △ h = 13