抄録
A force model is presented to predict the cutting force in drilling of anisotropic materials. The cutting process of rolled titanium alloy depend on the edge orientation with respect to the rolling direction of the workpiece plate. In drilling of the rolled titanium alloy, the cutting force oscillates during a rotation of the tool. The prominent frequency at the oscillation is double frequency of the spindle speed, which is induced by anisotropy in the material. The force model makes three dimensional chip flow with piling up the orthogonal cuttings, which are given by the orthogonal cutting data. The chip flow direction is determined to minimize the cutting energy. Then, the cutting force is predicted in the determined chip flow model. In order to consider anisotropy in the material, the shear stress on the shear plane in the orthogonal cutting data is associated with the edge orientation.
