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Measuring Points Selection for Laser Tracker Measurement of Five-Axis Machine Tool

[+] Author Affiliations
Qingzhao Li, Wei Wang, Hai Li, Jing Zhang, Zhong Jiang

University of Electronic Science and Technology of China, Chengdu, China

Paper No. IMECE2018-88314, pp. V002T02A018; 8 pages
doi:10.1115/IMECE2018-88314
From:
  • ASME 2018 International Mechanical Engineering Congress and Exposition
  • Volume 2: Advanced Manufacturing
  • Pittsburgh, Pennsylvania, USA, November 9–15, 2018
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5201-9
  • Copyright © 2018 by ASME

abstract

Due to the advantages of high efficiency, good flexibility and large measurement scale, the laser tracker measurement method is widely used in the error measurement of the machine tool. For the laser tracker measurement, the selection of the measuring points in the workspace has a significant influence on the identification effect of the errors. In this paper, the method to select the optimal measuring points is proposed. By construction of the suitable error vector and its corresponding error transformation matrix, the optimization criterion in robotic area is adopted to evaluate the identification effect of the measuring points. Based on the optimization criterion, the scheme of the measuring points selection can be established. The method proposed is validated by a case study. The method can help increase both the measurement efficiency and the error identification effect.

Copyright © 2018 by ASME
Topics: Lasers , Machine tools

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