滚齿法是圆柱齿轮加工中最普遍采用的方法之一。用滚齿法加工齿轮时通常都是采用单头滚刀。只有粗加工时才采用多头滚刀,因为采用多头滚刀时可以明显地提高劳动生产率。但是,用多头滚刀所加工的齿轮的精度和表面光洁度都比单头的差。当采用多头滚刀时,由于滚刀槽数选择不当可使形成齿廓 Gear hobbing is one of the most commonly used methods in cylindrical gear machining. Hobbing gear processing are usually used when the single-head hob. Multi-head hobs are used only for roughing, as labor-productivity can be significantly increased with multiple hobs. However, the gear machined with the hob has worse precision and surface finishes than the single head. When using multi-hob, due to improper selection of hob slots can be formed tooth profile