Abstract
Surface machining system based on spherical coordinate, which is used in non-contour control, is present for the thin-walled director sphere part turning, to improve the efficiency and quality of part machining. In this system, a thickness surface B-spline model is set up based on spherical coordinate, the space spiral path generation method is planned. To meet the requirement of surface quality, row spacing angle is determined by scallop height and blunt radius of cutting tool, and angle B-spline model for back cutting depth is given. Moreover, space spiral interpolation algorithm is present in CNC.
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