Discretization and interpolation of curves are two frequently adopted practices when machining complex curves using computer numerically controlled (CNC) machines. Both practices stem from the need to sample curves at discrete time intervals corresponding to the sampling period of the CNC machine. This paper proposes new techniques for discretization and interpolation that account for the change of tool orientations in five-axis machining. First, the method for discretization proposed in this paper is based on sampling the curves such that specified contour, feedrate, and orientation errors are not exceeded. Second, the interpolator proposed in this paper will be able to avoid excessive angular speeds arising from sampling the curves based on the feedrate alone. [S1087-1357(00)01401-5]
Discretizors and Interpolators for Five-Axis CNC Machines
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received Aug. 1998; revised Aug. 1999. Associate Technical Editor: C. H. Meng.
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Sarma , R., and Rao , A. (August 1, 1999). "Discretizors and Interpolators for Five-Axis CNC Machines ." ASME. J. Manuf. Sci. Eng. February 2000; 122(1): 191–197. https://doi.org/10.1115/1.538896
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