我厂在研制高精度的球面车床中,上、下回转盘的多环导轨的加工质量直接影响球体的加工精度。多环导轨如图1所示。上、下回转盘各有4条环形导轨,V型槽的夹角为90°,槽的最大宽度为6mm, I plant in the development of high-precision spherical lathe, on the next round of multi-ring guide rail processing quality directly affects the ball’s machining accuracy. Multi-ring rail shown in Figure 1. Upper and lower turntables each have four annular rails, V-groove angle of 90 °, the maximum width of the groove is 6mm,