在铣削加IT形槽铣刀的左右族间隔螺旋齿（见图亚）时，分度头手柄旋转圈数的调整计算较复杂，对操作工人的技术要求较高。本文通过计算，推导出一种简便实用的手柄转数调整计算公式。设T形槽铣刀直径为d，宽度为l，螺旋角为。，齿数为。，工作铣刀至T形槽铣刀端面距离为人T形槽 The adjustment of the number of turns of the indexing head handle is more complicated when milling the left and right interlaced helical teeth (see Figure 1) of an IT-slot cutter, and the technical requirements for operating the worker are high. In this paper, a simple and practical formula to calculate the rotation speed of the handle is deduced through calculation. Let T-groove cutter diameter d, width l, helix angle. , The number of teeth. , Work milling cutter to T-groove cutter end surface of the human T-slot