加工汽车变速齿轮的圆锥形啮合齿(见图1)或插齿刀齿形后角的粗加工,在本厂若无专用设备的条件下,通常利用滚齿机进行改装来达到的。但大多数情况由于改装后结构复杂或操作不便,一经改装就成了专用机床。为了适应多品种小批量的工厂生产规模,我厂对Y38型滚齿机进行了改装,只要对该机 Cone meshing gears (see Fig. 1) for the machining of gearboxes for automotive transmissions or roughing of the chamfered corners of gear shaper cutters are usually done by hobbing machines without the need for special equipment. But in most cases due to the complex structure or inconvenient after modification, once converted into a special machine tool. In order to adapt to small-scale multi-species plant production scale, I plant Y38 hobbing machine was modified, as long as the aircraft