基于角度二分法的NC代码转换理论和试验研究

Theoretical and experimental research on the transformation of NC codes based on the method of angle dichotomy

为使普通数控机床能够加工差分插补NC代码所表示的工件,研究了一种基于角度二分法的多段微线段高精度逼近曲线方法,从而克服了等误差法的计算难度大以及等间距法曲线节点过于密集等缺点.OpenGL视口图形模拟和加工实例表明,该方法成功实现了差分插补NC代码到普通NC代码的转换,且程序运行稳定可靠,界面友好易用,加工效果理想.

In order to make the general NC machine process the workpieces which are represented by difference interpolation NC code,a method for the high-precision approximation curve using multi-segment micro line is studied based on angle dichotomy.This method overcame the short-comings of the great calculation difficulty of equal error method and the overdense curve nodes of equal space method.Through the test of OpenGL viewport graphic simulation and machining ex-periments,this method achieved the conversion from the differential interpolation of NC code into ordinary NC code,and the program is running stable and reliable with friendly interface easy to use,and obtained the ideal processing effect.