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本文叙述的变齿距圆柱形滚刀适于在滚齿机上以单面切削法切制直齿和螺旋齿锥齿轮。锥齿轮与在切齿过程中由滚刀切削刃的轨迹所形成的变齿距齿条相啮合的可能性是成形过程的基础,在这种情况下侧面齿形为球面渐开线,而轮齿的轴线一直齿轮为直线,螺旋齿轮为螺旋线。变齿距滚刀的结构具有以下特点(图1):装配滚刀的心轴1同一般用在滚齿机上相近。滚刀的每个齿都是分别制成的,并具有一定长度的扇形块2,扇形刀齿外面有一个具有齿条齿形的切削部份,其高度与被加工齿轮最大的
This article describes the variable pitch cylindrical hob suitable for hobbing machine with single-sided cutting method of cutting straight spur and helical bevel gear. The possibility of the bevel gear meshing with the variable-pitch racks formed by the path of the cutting edge of the hob during the cutting process is the basis for the forming process, in which case the side profile is a spherical involute and the gear teeth The axis of the gear has been a straight line, spiral gear for the helix. Variable pitch hob structure has the following features (Figure 1): Assembly hob spindle 1 with the general hobbing machine used in similar. Each tooth of the hob is made separately and has a segment 2 of a certain length outside of which is a cutting portion having a rack tooth profile with a maximum height of the to-be-machined gear