油石与被加工工件圆周方向接触弧长所对的圆心角称为油石包容角,简称包角。本文用正交试验,验证了包角在超精研中改善圆度的作用,并用正交多项式回归分析的方法,建立了影响超精后圆度的显著因素与超后圆度值的回归方程。 Whetstone and the workpiece to be processed in the circumferential direction of the contact arc length of the center angle known as the stone inclusion angle, referred to as wrapping angle. In this paper, orthogonal experiment was used to verify the effect of wrapping angle on the improvement of roundness in the ultraprecision study. The regression equation of the significant factor that affects the roundness of the hyperfineness and the back circularity was established by orthogonal polynomial regression analysis .