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针对直线段与圆弧连接处的过渡,采用微小线段插补进行处理;通过前瞻分析的方法,控制直线段与圆弧段过渡处的进给速度提前减速,有效地减少了直线与圆弧过渡处的加工误差,建立混合S型双向加减速曲线模型,实现了圆弧段拐角处速度的控制.为了更好地优化数控刀具的加工时间,改进S型加速曲线原来加速缓慢耗时的前半部分,建立非零启动S型曲线加减速模型,从而减少启动时间,这种改进极大地优化刀具在走圆弧时的时间及平稳性.
Aiming at the transition between the straight line and the circular arc, the interpolation of the small line segment is used for processing. By forward analysis, the feed speed at the transition between the straight line segment and the circular arc segment is reduced in advance, which effectively reduces the transition between the straight line and the arc The processing error, the establishment of hybrid S-type two-way acceleration and deceleration curve model to achieve the circular arc corner of the speed control.In order to better optimize the NC tool machining time, improve the S-type acceleration curve was accelerated the first half of the slow time-consuming , The establishment of non-zero start S-curve acceleration and deceleration model, thereby reducing the start-up time, this improvement greatly optimize the tool in the arc when the time and stability.