在圆柱蜗杆传动中，当头数较多，螺旋角较大时，用径向进给法加工蜗轮，有时会发现蜗轮两端齿面切去一部分，如附图所示。如果是右旋，发生在C、B处，左旋则发生在A、D处，这种现象常称为“边切”。虽然发生在边上但严重时，使啮合时的接触面积减少，降低蜗轮的动性能。边切实 In the cylindrical worm drive, when the number of heads is larger, the helix angle is larger, the radial feed method is used to process the worm gear, and sometimes a portion of the gear faces of both ends of the worm gear is cut away, as shown in the figure. If it is right-handed, occurred in the C, B Department, left-handed occurs in the A, D Department, this phenomenon is often referred to as “side cut.” Although it occurs on the edge but serious, the meshing contact area is reduced, reducing the dynamic performance of the worm wheel. Realistically