Method and apparatus for ascertaining tool path contours approximating curved contour intersection lines in numerically controlled machines

摘要

The method and apparatus according to the present invention interpolates curves with arbitrary accuracy. The accuracy is predetermined by a scalar value and indicates the maximum deviation (d) of a linearization segment of the curve (K). The maximum deviation (d) in this case is defined as the length of a vertical (d) which results from the intersection of the vertical from the rectilinear interpolation line between the points P1 and P2 of an interval with the curve (K) itself and the rectilinear interpolation line (K.sub.i). The increment width is determined dynamically, that is, the number of interpolating linearizing segments depends on the concrete properties of the curve such as the curve parameters.