The application of a biarc technique in CNC machining

It is frequently necessary to machine a contour which has been defined by discreet co-ordinate information. Traditionally, this had been achieved by contour-fitting procedures such as mathematical, parametric or B-splines. A technique has been established for fitting circular arcs to such data to give smooth curves. This article describes how that technique may be used on a PC to generate numerical control (NC) data. A successful machining exercise is detailed