Thermal Test for Error Maps of Rotary Axes by R-Test

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Thermal distortions are regarded as one of major error factors in a machine tool. ISO 230-3 [1] describes tests to evaluate the influence of thermal distortions caused by linear motion and spindle rotation on the tool center position (TCP). No test is described in these standards on the thermal influence of a rotary axis. Furthermore, conventional thermal tests only measure thermal influence on the positioning error at a single point, not error motions of an axis. This paper proposes a method to calibrate thermal influence on error motions of rotary axes in five-axis kinematics by the static R-test. The R-test measurement clarifies how error motions of a rotary table changes with the rotation of a swiveling axis, and how error motions are influenced by thermal changes. Experimental demonstration will be presented.

Info:

Periodical:

Key Engineering Materials (Volumes 523-524)

Edited by:

Tojiro Aoyama, Hideki Aoyama, Atsushi Matsubara, Hayato Yoshioka and Libo Zhou

Pages:

809-814

DOI:

10.4028/www.scientific.net/KEM.523-524.809

Citation:

S. Ibaraki and C. F. Hong, "Thermal Test for Error Maps of Rotary Axes by R-Test", Key Engineering Materials, Vols. 523-524, pp. 809-814, 2012

Online since:

November 2012

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Price:

$35.00

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