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加工键槽时,在键槽拉刀尾部加装了一个倒角刀头,可以把拉槽和倒角两道工序一次完成。加装方法很简单(见附图)。倒角刀头柄部尺寸d与拉刀按d_4公差配合,并取d≈B-(3～8)毫米;紧固螺钉按D
When the keyway is machined, a chamfering cutter head is installed at the end of the keyway broach, which can complete the two steps of drawing groove and chamfering at once. Installation method is very simple (see photo). Chamfer head handle size d and broach press d_4 tolerance with and take d ≈ B- (3 ~ 8) mm; tighten the screw by D