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IJAT Vol.8 No.1 pp. 20-27
doi: 10.20965/ijat.2014.p0020
(2014)

Paper:

Error Calibration for Five-Axis Machine Tools by On-the-Machine Measurement Using a Touch-Trigger Probe

Soichi Ibaraki and Yusuke Ota

Department of Micro Engineering, Kyoto University, Katsura, Nishigyo-ku, Kyoto 616-8540, Japan

Received:
August 1, 2013
Accepted:
November 11, 2013
Published:
January 5, 2014
Keywords:
five-axis machine tools, touch-trigger probe, geometric errors, error map, error calibration
Abstract

This paper presents a scheme to calibrate the error map of the rotary axes of a five-axis machine tool. This is done by means of on-the-machine measurement of a test piece using a contact-type touch-trigger probe. The present probing-based approach is more suitable for efficient and automated “self-calibration,” than conventional calibration schemes, such as ball bar tests or R-test. It is thus advantageous in the application to periodic checking of the error map, or periodic updating of its numerical compensation. In the present approach, a test piece of arbitrary geometry, e.g. a raw unmachined workpiece, can be used as the probing target. An experimental demonstration is presented.

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Last updated on Aug. 21, 2017