The estimation of cutting force coefficients in milling of thin-walled parts using cutter with different tooth radii

Abstract

The precise estimation of the cutting force coefficients in milling is very important, which has great impact on the precise calculation of the milling forces and the stability lobes of the system. On the basis of the imprecise estimation of cutting force coefficients in milling of thin-walled part using cutter with different tooth radii, the calculation process of actual cutting force coefficients is proposed in this article. First, based on the different amplitudes of milling forces caused by the long and short teeth of cutter, the nominal milling forces and nominal cutting force coefficients are constructed, and the radii error of the long and short teeth of cutter is calculated. Then, actual cutting force coefficients are derived based on radii error of cutter teeth. Finally, an experiment is performed to verify the validity of the calculation process of actual cutting force coefficients proposed in this article, and the results show that the actual cutting force coefficients obtained by consideration of radii error are more effective than theoretical cutting force coefficients obtained without consideration of radii error in the calculation of milling forces.