Error map construction for rotary axes on five-axis machine tools by on-the-machine measurement using a touch-trigger probe |
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| Affiliation: | 1. Department of Micro Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan;2. Okuma Corporation, Oguchi-cho, Niwa-gun, Aichi 480-0193, Japan;1. Department of Micro Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan;2. Faculty of Engineering, Kinki University, Japan;3. National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Japan;1. Aix-Marseille Université, CNRS, ISM UMR 7287, 13288 Marseille cedex 09, France;2. Etalon AG, Bundesallee 100, Braunschweig, Germany;3. Centre for Precision Technologies, School of Computing and Engineering, University of Huddersfield, United Kingdom;4. Fraunhofer Institute for Production Technology (IPT), Steinbachstraße 17, 52074 Aachen, Germany;5. Institute for Machine Tools and Factory Management, Technische Universität Berlin, Pascalstr. 8-9, 10587 Berlin, Germany |
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| Abstract: | Position-dependent geometric errors, or “error map,” of a rotary axis represent how position and orientation of the axis of rotation change with its rotation. This paper proposes a scheme to calibrate the error map of rotary axes by on-the-machine measurement of test pieces by using a contact-type touch-trigger probe installed on the machine's spindle. The present scheme enables more efficient and automated error calibration, which is crucial to implement periodic check of rotary axes error map or periodic update of its numerical compensation for five-axis machine tools. The uncertainty analysis of the error calibration is also presented with a particular interest in the influence of error motions of linear axes. The experimental demonstration is presented. |
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