This paper proposes a new method to simultaneously calibrate the milling force coefficients and the cutter runout parameters in helical end milling. The linear cutting force model is utilized with the consideration of the runout of the cutter, and the mathematical relationships between the instantaneous milling forces and the milling force coefficients are expressed by an underdetermined system of linear equations. Then the least squares method is employed, and a calibration procedure is presented by defining an objective function, which is utilized to estimate the deviations between the simulated results and the measured results. Finally, experimental studies are carried out to verify the accuracy of the milling force coefficients and the cutter runout parameters calibrated by the proposed method. Results indicate that the predicted results agree well with the experiment results, and the errors of predicted results are much smaller than those of the average force method, which means that the proposed method has a higher accuracy than the average force method.

本文提出了一种在螺旋端铣中同时校准铣削力系数和刀具跳动参数的新方法。利用线性切削力模型，考虑刀具的跳动，瞬时铣削力与铣削力系数之间的数学关系用欠定线性方程组表示。然后采用最小二乘法，通过定义目标函数提出校准程序，用于估计模拟结果与测量结果之间的偏差。最后，通过实验研究验证了所提出的方法校准的铣削力系数和刀具跳动参数的准确性。