数控系统连续微线段加工方法研究

Study on Machining Method of Continuous Micro Line Segment in Numerical Control System

针对当前微小线段加工中存在加减速频繁、曲线加工处理算法复杂等缺陷,提出一种简单、易于实现的基于曲线分段微线段加工方法。分析了曲线微小线段加工与速度控制方法,给出了分段加工思想。基于“离散曲率”原理,推导了分段算法,结合直接过渡及圆弧过渡两种方法,对曲线加工速度进行规划设计,给出了算法实现流程及前瞻加工的实现要点。最后利用该方法对平面曲线进行了分段加工实验。实验结果表明,该加工方法计算简单,加工效率高,加减速较其它方法少,加工平稳。

In view of the defects such as frequent acceleration and deceleration and complex curve processing algorithm, a simple implement method based on segmental curve is proposed. The method of processing and speed control of curve micro-segment is analyzed, and the idea of segmental machining is given. Based on the principle of "discrete curvature", the piecewise algorithm is deduced, and the curve processing speed is planned and designed by combining the direct transition and circular transition methods,and the realization flow of the algorithm and the key points of prospective machining are given. Finally, the plane curve is piecewise machined with this method. The experimental results show that this method is simple in calculation, high in efficiency,less in acceleration and deceleration than other methods, and smooth in processing.