高速加工中的速度规划与段间连接

Speed Planning and Segment Connection in High Speed Machining

在复杂型面高速加工中,针对离散速度控制的特点,采用基于时间分割的前加减速算法对前瞻处理后的路径进行离散速度规划;在满足周期性、速度、加速度和定位要求的前提下,对速度规划后的残余长度在减速段进行平摊处理;对于无法进行平摊的残余长度,给出了空间直线与圆弧相互连接的计算公式.结果表明,该方法能够满足复杂型面高速加工的插补精度和加工效率要求.

A speed planning method was presented in high speed machining of complex shape parts. After look-ahead process, a time division based acceleration/deceleration interpolation algorithm is used to implement discrete speed control. Computational error caused by non-continuity is eliminated by deceleration phase compensation and smooth connection processing between segments. The experiment shows that the proposed algorithm satisfies the requirements of interpolation accuracy and machining efficiency in high speed machining.