通过分析铲磨床滚刀加工误差的来源，提出了应用误差补偿技术来修正被加工滚刀的螺旋线误差、齿距偏差的一种新方法。即在滚刀加工的最后一道加工工序中，将检测出滚刀的螺旋线误差送入计算机，数控步进电机则根据各齿的误差值发出相对应的修正脉冲数，补偿磨削砂轮轴向位置误差，达到修正滚刀螺旋线误差的目的。该方法可使Ｂ级精度滚刀较为稳定提高到Ａ级 By analyzing the origin of hobbing error of the shovel grinding machine, a new method of applying the error compensation technology to correct the helix error and pitch deviation of the hob is proposed. In the hobbing process, the helix error of the hob will be detected and sent to the computer. The CNC stepping motor will issue the corresponding correction pulse number according to the error value of each tooth to compensate the grinding wheel axial direction Position error, to achieve the purpose of correcting the hob helix error. This method can make B grade precision hob relatively stable to A level