本文分析了圆锥滚子贯穿超精加工时,滚子与螺旋导辊的接触状况,推导出导辊螺旋槽底母线的方程,提出了一种计算该母线曲线的新的较方便的方法。计算实例说明,当圆锥滚子的锥角较小时,将导辊螺旋槽底母线简化为直线,误差很小;当滚子锥角较大时,误差将增大。 This paper analyzes the contact condition between the roller and the spiral guide roller when the tapered roller passes through the superfinishing process and deduces the equation of the bottom generatrix of the spiral groove of the guide roller. A new and convenient method for calculating the curve of the generatrix is ​​proposed. The calculation example shows that when the taper angle of tapered roller is small, the bottom busbar of spiral guide groove is simplified to a straight line, the error is very small; when the cone angle of roller is larger, the error will increase.