Application of planar curve offset compensation in path modification

Abstract

Abstract Offset compensation is an indispensable functional module in the current CNC system. But offset compensation is not only used to improve machining accuracy, but also can be used to modify path. This paper first discusses the origin of the curve offset in the CNC system, and points out that the essence of the offset curve is a method of path modification. Then the general formula for offset compensation of plane curve is obtained through normalization. Then the classification of offset compensation is explained. Finally, line segments, arcs and B-spline curves are taken as examples to verify the feasibility and practicability of the offset compensation method applied to path processing. The offset compensation method is a flexible and effective path modification method.