直廓环面蜗轮(下称蜗轮)副传动具有较高的承载能力,如回柱绞车所采用这种传动与普通圆柱蜗轮副传动相比,在尺寸、材料相同情况下,其承载能力可提高2～4倍。因此,它在国内外矿山机械、冶金机械、煤矿机械中得到了广泛的应用。提高这种蜗轮副的制造精度是提高其承载能力的关键问题之一,尤其是蜗轮的齿面洼坑展成区加工较 Straight profile toroidal worm (hereinafter referred to as worm gear) Vice drive with high carrying capacity, such as the return winch used in this type of drive and ordinary cylindrical worm gear drive in the same size, material, the carrying capacity can be increased 2 to 4 times. Therefore, it has been widely used in mining machinery, metallurgical machinery and coal mining machinery at home and abroad. Increasing the manufacturing precision of such a worm gear pair is one of the key problems to increase the carrying capacity of the worm gear pair. In particular,