提出了一种磁流变抛光去除函数形状的动态预测方法。建立了去除函数形状的演变机制，并根据实际的磁流变抛光应用范围，通过数值计算分析得到了较简单的去除函数形状的演变方法。分析表明，对于实际抛光过程，去除函数长度和宽度的改变量与浸入深度的改变量有很好的线性关系，其决定系数均在95%以上。与实验结果对比，对去除函数的49次预测中，长度预测的相对误差在-4.52%~5.51%之间，宽度预测的相对误差在-7.20%~6.63%之间。

The dynamic prediction method is proposed to calculate the shape of magnetorheological finishing (MRF) removal function. After the establishment of transition mechanism of the shape of removal function, numerical analysis is performed to simplify this mechanism and hence resulting in the rapid prediction method for common MRF process configurations. The result indicates that, for most MRF settings, the variations of length and width change linearly with the variation of immersion depth, exhibiting coefficients of determination higher than 95%. Among the 49 prediction results, the relative errors for predictions of length range from -4.52% to 5.51% and the same figure for width predictions fluctuates from -7.2% to 6.63%.