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图1所示工件圆周上均布八个槽,原采用分度盘卡活插床剔槽,既慢又难保证质量。后来改用冲床冲制,工件由三爪卡簧6卡固如图2所示,扳动手柄5就可松紧。上冲采用八爪(数量由工件槽数而定)式卡簧,卡簧底部各爪通过中心铣有镶刀槽,刀由压刀板压牢,扳动手柄1可使卡簧胀缩,
Figure 1 shows the circumference of the workpiece are evenly distributed on the eight slots, the original use of sub-card slot slot live card, both slow and difficult to ensure quality. Later use punching punch, the workpiece by the three claw card spring 6 card as shown in Figure 2, pull the handle 5 can be elastic. The use of eight claw on the red (the number of parts by the number of slots) type circlip, the claw at the bottom of the claw through the center of the milling cutter groove, the knife pressed by the pressure plate firmly, pull the handle 1 can make the card expansion and contraction,