一般蜗轮切齿都在滚齿机上以径向进给方式加工,虽然机床、刀具、工件、工装都符合技术要求,滚齿机刀架调整在零度状态(滚刀轴处于水平位置),工件会出现齿长方向与蜗杆接触面精度达不到技术要求的现象,滚刀经多次刃磨后更为突出。经分析齿长方向误差主要是螺旋角误差引起的。而螺旋 General worm gear cutting hobbing machine on the way to the radial feed, although the machine tools, tools, workpieces, tooling are in line with technical requirements, hobbing machine tool holder adjustment at zero state (hob axis in horizontal position), the workpiece will appear in the tooth length direction Worm contact surface accuracy of less than the technical requirements of the phenomenon, the hob after multiple sharpening more prominent. The analysis of tooth length error is mainly caused by helix angle error. And spiral