IJAT Vol.14 No.3 pp. 409-416
doi: 10.20965/ijat.2020.p0409

Technical Paper:

Automating Accuracy Evaluation of 5-Axis Machine Tools

Guido Florussen, Koen Houben, Henny Spaan, and Theresa Spaan-Burke

IBS Precision Engineering BV
201 Esp, Eindhoven 5633AD, Netherlands

Corresponding author

October 30, 2019
December 27, 2019
May 5, 2020
5-axis machine tools, machine correction, metrology, non-contact

A wireless non-contact 3D measuring head is used to determine the accuracy of 5-axis machine tools. The measuring head is inserted in the spindle by the tool exchanger automating the measurement routine used. For checking the linear machine axes, a cross shaped artefact containing 13 precision balls is introduced, named Position Inspector, enabling the determination of positioning and straightness errors of two linear axes in one setup. The squareness error between both axes is also determined in this setup. This artefact can be mounted on a pallet system for automatic loading and is measured in a bi-directional run. This artefact can be measured in different orientations (i.e., horizontal, inclined, vertical) and is pre-calibrated with a CMM. The measurement sequence using this artefact is executed in eight minutes and its design and support system is addressed in this paper. The location errors and orientation errors of the axis average line (or pivot line) of both rotary axes are determined with the Rotary Inspector using the same measuring head with a single precision ball. For this, kinematic tests are used from ISO10791-6, e.g., the BK1 test, BK2 test which apply for trunnion or swivel table machines. Derived parameters can be used for machine correction resulting in a significantly improved machine accuracy. An example is given where this correction is performed automatically by implementing this measurement system in the machine’s controller. Finally the machine tool is tested using the BK4 test. For this test all 5-axes are moved simultaneously and the measured displacements between the machine’s spindle and table in X-, Y-, and Z-directions are compared to tolerance levels. This final test reveals the machine’s overall accuracy and dynamic behavior.

Cite this article as:
G. Florussen, K. Houben, H. Spaan, and T. Spaan-Burke, “Automating Accuracy Evaluation of 5-Axis Machine Tools,” Int. J. Automation Technol., Vol.14 No.3, pp. 409-416, 2020.
Data files:
  1. [1] G. Schlessinger, “Inspection tests on Machine Tools,” Machinery Publishing Co., 1932.
  2. [2] NAS 979, “Uniform cutting test,” NAS Series, Metal Cutting Equipment Specifications, pp. 34-37, 1969.
  3. [3] W. Knapp, “Test of the three-dimensional uncertainty of machine tools and measuring machines and its relation to the machine errors,” Annals of CIRP, Vol.32, No.1, pp. 459-464, 1983.
  4. [4] VDI 2617, Blatt3 VDI/VDE Richtlinien, “Genauigkeit vom Koordinatenmessgeraeten, Komponenten der Messabweichung des Geraetes,” May 1989 (in German).
  5. [5] J. Bryan, “International Status of Thermal Error Research,” Annals of CIRP, Vol.39, No.2, pp. 645-656, 1990.
  6. [6] Y. Kakino, Y. Ihara, and A. Shinohara, “Accuracy Inspection of NC Machine Tools by double Ball Bar Method,” Johannes Heidenhain GmbH (Eds.), Carl Hanser Verlag, 1993.
  7. [7] J. C. Ziegert, “Measurement of machine tool parametric errors using the laser ball bar,” Proc. of ASPE 9th Annual Conf., pp. 76-79, 1994.
  8. [8] M. Weck, P. A. McKeown, R. Bonse, and U. Herbst, “Reduction and compensation of thermal errors in machine tools,” Annals of CIRP, Vol.44, No.2, pp. 589-597, 1995.
  9. [9] H. Spaan, “Software Error Correction of Machine Tools,” Ph.D. thesis, Eindhoven University of Technology, 1995.
  10. [10] C. J. Evans, R. J. Hocken, and W. T. Estler, “Self-Calibration: Reversal, Redundancy, Error Separation, and ‘Absolute Testing’,” Annals of CIRP, Vol.45, No.2, pp. 617-634, 1996.
  11. [11] G. Florussen, F. L. M. Delbressine, M. J. G. van de Molengraft, and P. H. J. Schellekens, “Assessing Geometrical Errors of Multi-axis Machines by three-dimensional Length Measurements,” Measurement, Vol.30, pp. 241-255, 2001.
  12. [12] G. Florussen, “Accuracy Analysis of Multi-axis Machines by 3D Length Measurements,” Ph.D. thesis, Eindhoven University of Technology, 2002.
  13. [13] E. Trapet, J. J. Aguilar Martin, and H. Spaan, “Method for checking a rotary axis with self-centring sensing device,” Patent EP2 050 534 B1, 2003.
  14. [14] M. Tsutsumi and A. Saito, “Identification and Compensation of Systematic Deviations Inherent to 5-Axis Machining Centers,” Int. J. of Machine Tools and Manufacture, Vol.43, pp. 771-780, 2003.
  15. [15] S. Weikert, “R-test, a New Device for Accuracy Measurements on Five Axis Machine Tools,” Annals of CIRP Manufacturing Technology, Vol.53, No.1, pp. 429-432, 2004.
  16. [16] ISO 230-4, “Circular tests for numerically controlled machine tools,” Second edition, April 2005.
  17. [17] B. Bringmann and W. Knapp, “Model based ‘Chase-the-ball’ Cailibration of a 5-axes Machining Centre,” Annals of CIRP, Vol.55, No.1, 2006.
  18. [18] G. Florussen and H. Spaan, “Static R-test: allocating the centreline of rotary axes of machine tools,” 8th Lamdamap, pp. 196-202, 2007.
  19. [19] H. Schwenke, W. Knapp, H. Haitjema, A. Weckenmann, R. Schmitt, and F. Delbressine, “Geometric error measurement and compensation of machines – An update,” Annals of CIRP – Manufacturing Technology, Vol.57, No.2, pp. 560-575, 2008.
  20. [20] G. Florussen, M. Morel, and H. Spaan, “Assessing the impact of rotary axes on the dynamic accuracy of machine tools,” 9th Lamdamap, pp. 28-37, 2009.
  21. [21] S. H. H. Zargarbashi and J. R. R. Mayer, “Single setup estimation of a five axis machine tool eight link errors by programmed end point constraint and on the fly measurement with Capball sensors,” Int. J. of Machine Tools and Manufacture, Vol.49, pp. 759-766, 2009.
  22. [22] S. Ibaraki, C. Oyama, and H. Otsubo, “Construction of an error map of rotary axes on a five-axis machining center by static R-test,” Int. J. of Machine Tools and Manufacture, Vol.51, pp. 190-200, 2011.
  23. [23] S. Ibaraki and W. Knapp, “Indirect Measurement of Volumetric Accuracy for Three-axis and Five-axis Machine Tools: A Review,” Int. J. Automation Technol., Vol.6, No.2, pp. 110-124, 2012.
  24. [24] ISO 230-1, “Geometric accuracy of machine operating under no load or quasi static conditions,” Third edition, March 2012.
  25. [25] H. Spaan and G. Florussen, “Determining the 5-axes machine tool contouring performance with dynamic R-test measurements,” 12th euspen Conf., Stockholm, Sweden, pp. 377-381, June 2012.
  26. [26] C. Hong and S. Ibaraki, “Non-contact R-test with laser displacement sensors for error calibration of five-axis machine tools,” Precision Engineering, Vol.37, No.1, pp. 159-171, 2013.
  27. [27] ISO 230-2, “Determination of accuracy and repeatability of positioning of numerically controlled axes,” Fourth edition, May 2014.
  28. [28] ISO 10791-6, “Accuracy of speeds and interpolations,” Second edition, December 2014.
  29. [29] ISO 230-7, “Geometric accuracy of axes of rotation,” Second edition, May 2015.
  30. [30] S. Ibaraki, Y. Nagai, H. Otsubo, Y. Sakai, S. Morimoto, and Y. Miyazaki, “R-test Analysis Software for Error Calibration of Five-Axis Machine Tools – Application to a Five-Axis Machine Tool with Two Rotary Axes on the Tool Side –,” Int. J. Automation Technol., Vol.9, No.4, pp. 387-395, 2015.
  31. [31] ISO 230-11, “Measuring instruments suitable for machine tool geometry tests,” Technical report, First edition, 2017.
  32. [32] S. Ibaraki and I. Yoshida, “A Five-Axis Machining Error Simulator for Rotary-Axis Geometric Errors Using Commercial Machining Simulation Software,” Int. J. Automation Technol., Vol.11, No.2, pp. 179-187, 2017.

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