The solution formula of dwell time is deduced by using the pulse iteration method and the smoothing fourier transition method , and the formula can be simplified referring to workpiece shape . according to the anastomotic status of the tool and workpiece surface , we present the new model of the inherent relation among local pressure density , removal rate , convergence ratio and residual errors , and the corresponding formulas are given . the forming cause of the edge effect in the polishing process is analyzed , and the means which reduces the edge effect is put forward 2 、針對計算機控制光學表面成形( ccos )的加工方式、誤差收斂特點,研制了去除函數呈高斯分布的雙轉子結構研拋模;采用脈沖迭代法、平滑因子傅立葉變換法推導出駐留時間的算法,求解過程中根據工件面形的特點作了各種形式的簡化;提出了工件表面和研拋模的吻合誤差與局部壓強、材料去除率、收斂比之間內在關系的數學模型,并推導出相應的計算公式;分析了邊緣效應產生的原因,在加工過程中采用相對壓力因子對去除函數進行修正,可以消除邊緣效應的影響。