一、问题的提出在试制摩托车零件(花键齿套)中,其内套齿是一种大螺旋角矩形花键,由于花键螺旋角度大(约45°),套齿的加工成了关键。对于螺旋内套齿的加工,有的厂是采用在车床上用车内螺旋槽的办法,但这办法不适用我厂。原因是我厂的内套齿小(内孔直径φ20:套齿槽宽3.35),这样,车槽刀刀头小,车刀刀头刚性差,再则螺旋角大了以后,刀头左右切削条件相差很大,螺旋槽又是多头,车槽时等分不易保证,这样,螺旋套齿的精度必然保证不了。国内有的厂也采用过“在拉床上用靠模法”的拉削工艺,也 First, the issue put forward In the manufacture of motorcycle parts (spline gear), the sleeve teeth is a large helix angle rectangular spline, spline helix angle (about 45 °), set of teeth into the process The essential. For the processing of spiral sleeve teeth, and some plants are used in the lathe spiral groove car approach, but this approach does not apply to our plant. The reason is that the inner sleeve of our factory is small (bore diameter φ20: sleeve width 3.35). In this way, the grooved cutter head is small and the rigidity of the cutter head is poor. After that, when the helix angle is large, the cutter head cuts left and right Conditions vary widely, the spiral groove is long, trough when the car is not easy to guarantee, so that the accuracy of the spiral sleeve tooth inevitable guarantee. Some domestic factories have also adopted the “broaching mode with the broaching method” broaching process, also