Self-adaptive method for line-interpolation of B-spline tabulated curve

A self-adaptive method is proposed which can make line-interpolating of a cubic B-spline tabulated curve and generate varied step length cutter location points according to the machining accuracy. It generates short step length points where the curvatures are big and long step length points where the curvatures are small, and can meet the needs of the machining accuracy at the same time. This method is steady and reliable, and can be applied to NC machining of tabulated curve and tabulated surface.