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图1所示的可调装配式铰刀与标准铰刀不同,它在本体2/3长度上的各齿之间开有两端交错分布的槽,而在内孔表面具有两个呈圆锥花键孔表面的凸缘,位于两端面附近与槽相交,其圆锥花键孔表面与心轴1∶30的圆锥面相配合,可以保证在调整铰刀直径时切削刃的跳动最小。在校正刃部分倒锥增大到0.06毫米,以便在调整时不会出现正锥。配合孔的直径用标准尺寸系列按公式d=(0.5～0.6)D确定,以减小本体的刚度,
The adjustable reamer shown in Fig. 1 is different from a standard reamer in that it has slots at both ends in the length of 2/3 of the body with two conical flowers The flange of the key hole surface intersects with the groove near both end surfaces. The conical spline hole surface matches the conical surface of the mandrel 1:30, so as to ensure that the edge of the cutting edge is minimal when the diameter of the reamer is adjusted. The taper at the edge of the correction edge increases to 0.06 mm so that a positive taper does not appear when adjusting. With the diameter of the hole with a standard series of sizes according to the formula d = (0.5 ~ 0.6) D to reduce the body stiffness,