目前,采用专用高精度单头滚刀实现范成法的加工是超精密(相当于 CT CзB 642—77所规定的4级和5级精度)小模数圆柱齿轮主要的精加工方法。通常,滚齿时滚刀是沿轮齿的轴线方向切入的,并且是粗走刀和精走刀都使用同一把滚刀。然而,用多次走刀来滚切小模数齿轮必要性的理论根据是不充分的;对精走刀余量推荐为由0.02～0.05毫米到0.3～0.5毫米并非单一值,且它们之间还存在着矛盾。众所周知,减少走刀次数是提高滚齿效率的重 At present, the machining of Fan Chengfa using special precision single-head hobbing is the main finishing method of ultra-precision (equivalent to grade 4 and 5 precision of CT CзB 642-77) small module spur gears. In general, when hobbing, the hob is cut along the axis of the gear tooth, and the same hob is used both for the rough pass and the fine pass. However, the rationale for using multiple passes to tare the small-modulus gear is insufficient; the recommended run-off allowance is not a single value from 0.02 to 0.05 mm to 0.3 to 0.5 mm, and between them There are still contradictions. As we all know, reducing the number of passes is to improve the hobbing efficiency