In order to achieve line contact and improve the load carrying capacity of the crossed axis helical gears, the gear can be made to curve partially around the pinion, in somewhat the same way that a nut envelops a screw. 翻译:为了得到线接触和改进螺旋齿轮的横向轴向的传动载荷能力,大齿轮可能被做成弯曲形状以围绕小齿轮,有时类似于螺帽套在螺钉上,这样的结果就是圆柱形的涡轮蜗杆。