摘要
针对目前数控小线段加工过程中频繁加减速引起的加工效率和加工精度降低的问题,提出了数控系统离散路径上小线段的前瞻控制方法。先对线段和线段之间的衔接角度进行分析计算,找出通过线段衔接的最大速度。由于速度同时也受限于线段长度,因此通过前瞻路径上各个线段之间的关系来确定前瞻控制的最优策略,最终确定数控插补的加减速过程。此前瞻控制策略在满足加工精度的同时最大程度地减少前瞻控制中的计算量。实例加工结果证明,本算法有效地提高了加工效率和加工质量。
Aiming at the high speed and high precision requirements , it analyzes a continuous path look -ahead interpolation algorithm .According to the constraints at the small lines joints , it calculates the optimal feedrate , obtains the feedrate relationship between the adjacent path .It uses an optimal look-ahead control stratege to de-termin the joint feedrate according this relationship .This stratege can reduce the computation at most .The ex-perimental results provide to verify the feasibility and precision of the proposed interpolation algorithm .
出处
《机械设计与制造工程》
2013年第12期32-35,共4页
Machine Design and Manufacturing Engineering
关键词
数控前瞻
微小线段
前瞻策略
CNC Look-ahead Control
Continuous Path
Optimal Look-ahead Method
