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Identification and verification of location errors of rotary axes on five-axis machine tools by using a touch-trigger probe and a sphere

  • Yu-Ta Chen
  • Pruthvikumar More
  • Chien-Sheng LiuEmail author
ORIGINAL ARTICLE
  • 19 Downloads

Abstract

As a foundation to enhance the machining accuracy of five-axis machine tools, a robust, efficient, and precise method to measure the location errors of rotary axes on five-axis machine tools has been proposed in this study. This precise identification and calibration methodology for on-machine measurement of location errors of rotary axes is achieved by using a touch-trigger probe and a precise sphere installed on a tilting rotary table. Compared to commercially available devices, such as the double ball bar and R-test, the proposed measurement method has the advantages of efficient and automated calibration procedures in each periodical measurement. This proposed calibration algorithm builds a kinematic error model and measurement equations by using a forward and inverse kinematic approach and estimates the location errors by applying the least squares method. Moreover, the proposed calibration algorithm defines the location errors of the two rotary axes so they can be estimated and separated individually to avoid coupling effects. All the location errors of the rotary axes measured using the proposed measurement method were identified after compensation to improve the accuracy of the five-axis machine tool. A simulation was implemented to inspect the influence of uncertainties on the identified location errors of the rotary axes. Finally, an experimental demonstration on a five-axis machine tool with a tilting rotary table validates the feasibility of the proposed measurement method.

Keywords

Location errors Rotary axis Five-axis machine tool Touch-trigger probe Error identification 

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Notes

Acknowledgements

The authors gratefully acknowledge the financial support provided to this study by the Ministry of Science and Technology of Taiwan under Grant Nos. MOST 106-2218-E-194-011, 106-3114-8-194-001, and 107-2218-E-194-002.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Mechanical Engineering and Advanced Institute of Manufacturing with High-Tech InnovationsNational Chung Cheng UniversityMinhsiung TownshipTaiwan
  2. 2.Department of Mechanical EngineeringNational Cheng Kung UniversityTainan CityTaiwan

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