蜗杆齿厚的测量方法之一是测量M值,该测量方法准确而方便。本文就车削的圆弧齿圆柱蜗杆的M值计算公式进行推导。车削蜗杆3时,车刀2原始安装位置如图1所示。该图是蜗杆的一个轴截面。由图1可得a和b之值: 图2示出了坐标o_ux_uy_uz_u和o_1x_1y_1之间的相对运动关系,即车刀和蜗杆之间的相对运动关系。当坐标系o_ux_uy_uz_u(与车刀相固连) Worm tooth thickness measurement method is to measure the M value, the measurement method is accurate and convenient. In this paper, we deduced the M value calculation formula of circular arc tooth worm with turning. Turning worm 3, the original position of the turning tool 2 shown in Figure 1. The figure is an axial section of the worm. The values ​​of a and b are obtained from FIG. 1: FIG. 2 shows the relative movement between the coordinates o_ux_uy_uz_u and o_1x_1y_1, ie the relative movement between the turning tool and the worm. When the coordinate system o_ux_uy_uz_u (fixed with the turning tool)