上海交通大学学报(自然版)

• 金属学与金属工艺 • 上一篇    下一篇

高速加工中的速度规划与段间连接

杨林,张承瑞,王科,李鹏   

  1. (山东大学 机械工程学院, 济南 250061)
  • 收稿日期:2009-04-29 修回日期:1900-01-01 出版日期:2010-01-29 发布日期:2010-01-29

Speed Planning and Segment Connection in High Speed Machining

YANG Lin,ZHANG Chengrui,WANG Ke,LI Peng

  

  1. (School of Mechanical Engineering, Shandong University, Ji’nan 250061, China)
  • Received:2009-04-29 Revised:1900-01-01 Online:2010-01-29 Published:2010-01-29

摘要: 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.

关键词: 计算机数控系统, 高速加工, 速度规划, 段间连接

Abstract: 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.

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