斜齿轮成形磨削加工时，根据当量齿数直齿轮修整成形砂轮精度不易保证。

When a nelial gear is under form grinding, it is not easy for form grinding wheel, if dressed by the equivalent number of teeth of spur gear, to attain the precision required by standards.

youdao

借助一个渐开线斜齿圆柱齿轮的刀具齿面推导出蜗杆砂轮齿面，由蜗杆砂轮齿面经双参数包络生成斜齿面齿轮齿面。

Using a helical involute pinion surface to form the grinding worm surface, a helical face gear is formed via a two-parameter worm envelope.

youdao