On the Influence of Cutter Paths on Geometrical Work Accuracy

In this paper, the relation between the geometrical work accuracies and cutter paths generated by a CAD program on a personal computer is investigated in two points. The first, two kinds of machining center, semi-closed loop feed back type A and closed-loop type B with the same computerized numerical controler are used. In both, the sphericity is generally better in linear interpolation than in circular. But the cutter path giving the best sphericity is different. The second, the roundness in disk cutting with the machining center A in the various kind of interpolated cutter path are shown. The roughness is worse but the roundness is better in an linear interpolation than in circular. In linear interpolations the suitable number of division exists.