介绍一种精修磨圆柱蜗杆的新方法 ,即用高精度的渐开线齿轮形超硬修磨轮对圆柱蜗杆进行双自由度精修磨 .理论分析表明 ,修磨后的蜗杆齿面形状为 ZI蜗杆齿形 ,且在一定条件下 ,也可得到 ZA蜗杆齿形 .该方法也可用于精加工其它齿形的蜗杆 ,且操作简便 ,成本低 ,易于推广应用 This paper introduces a new way to finely polish a cylindrical worm, that is to use a high-precision involute gear-shaped super-hard grinding wheel to perform two degrees of freedom fine grinding on a cylindrical worm.It is shown by theoretical analysis that the shape of the worm tooth after grinding is ZI worm tooth profile, and under certain conditions, ZA worm tooth profile can also be obtained. This method can also be used for finishing other tooth-shaped worm, and the operation is simple, low cost and easy to promote the application