422 Analysis of Surface Generating Mechanism of Ball End Mill Based on Deflection by FEM

Abstract

This paper deals with the analysis of the surface generating mechanism of a ball end mill based on deflection. The FEM model of a ball end mill is made out and the cutter deflection due to cutting force is calculated using the model. The shape of the machined surface is predicted by summation of cutting edge positions which are obtained by the cutter deflection and the cutter rotation during machining. The predicted surface is almost coincident to the experimental shape, so the method of calculation of the machined shape is verified.