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Wholly smoothing cutter orientations for five-axis NC machining based on cutter contact point mesh. (English) Zbl 1380.70009
Summary: Cutting forces with respect to different cutter orientations are analyzed for five-axis NC machining of a ball-end cutter. A measure is then defined to quantify the effects of cutter orientation variation. According to the measure, a novel model and algorithm are proposed to wholly optimize cutter orientations based on a cutter contact (CC) point mesh. The method has two advantages. One is that the cutter orientation smoothness along the feed direction and pick-feed direction are both wholly optimized. The other is that only the accessibility cones of mesh points are required to compute and the computation efficiency is improved. These advantages are shown by simulating the machining efficiency, the stability of feed velocities and the smoothness of cutting force. A computational example and a cutting experiment are finally given to illustrate the validity of the proposed method.

MSC:
70B15 Kinematics of mechanisms and robots
Software:
DistMesh
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