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Driving Force Constraint Corner Smoothing Method for High-Speed Machine Tools

[+] Author Affiliations
Bingran Li, Hui Zhang, Peiqing Ye

Tsinghua University, Beijing, China

Paper No. DETC2017-67466, pp. V006T10A012; 9 pages
doi:10.1115/DETC2017-67466
From:
  • ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 6: 13th International Conference on Multibody Systems, Nonlinear Dynamics, and Control
  • Cleveland, Ohio, USA, August 6–9, 2017
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5820-2
  • Copyright © 2017 by ASME

abstract

This paper presents a trajectory planning method for high-speed CNC machine tools. Generally, the kinematic parameters of a machine are limited to an agreed range in the trajectory planning process. However, a new single-step strategy trajectory planning method is proposed under a driving force limit condition. This method minimizes the acceleration and deceleration time when the speed changes. This kind of force limit method guarantees the tracking performance of a servo system. This paper proposes a method for time domain automatic feed rate adjustment to meet the requirements of the planning trajectory. In this method, two trajectory planning processes are provided. These processes are the two-axis straight line segment and the two-axis corner transfer segment planning process. An adapter for asymmetric contour error calculation method is then proposed, and the continuous G-code trajectory planning method is realized under this error calculation method. Finally, we compare our proposed algorithm with other algorithms through simulations and experiments, and then we prove the superiority of our proposed algorithm.

Copyright © 2017 by ASME

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