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Proceedings Paper

Application of phase-shift optical triangulation to precision gear gauging
Author(s): Guowen Lu; Shudong Wu; Nicholas Palmer; Hongyu Liu
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Paper Abstract

Traditionally, gear tooth profile is measured by coordinate measurement machines using mechanical probe scanning, which is very time consuming. Therefore, normally only a few lines are scanned across the gear tooth surface, which often do not faithfully represent the whole tooth surface profile. In this paper, a phase-shift optical triangulation technique is applied to the gear profile measurement, which has the advantages of redundant information, speed and non-contact nature. When examining a 2 cm2 area, comparative measurement accuracy better than 1 micrometers and resolution about 0.1 micrometers has been successfully demonstrated with the system; this corresponds to a 5 by 10-5 relative accuracy. The measurement result from the optical system displaced good correlation with those form a mechanical probe on a coordinate measurement machine. A few teeth/second measurement speed can also be expected. Different factors to effect the measurement accuracy are discussed, and the possible solutions are provided.

Paper Details

Date Published: 29 December 1998
PDF: 12 pages
Proc. SPIE 3520, Three-Dimensional Imaging, Optical Metrology, and Inspection IV, (29 December 1998); doi: 10.1117/12.334350
Show Author Affiliations
Guowen Lu, The Pennsylvania State Univ. (United States)
Shudong Wu, The Pennsylvania State Univ. (United States)
Nicholas Palmer, The Pennsylvania State Univ. (United States)
Hongyu Liu, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 3520:
Three-Dimensional Imaging, Optical Metrology, and Inspection IV
Kevin G. Harding; Donald J. Svetkoff; Katherine Creath; James S. Harris, Editor(s)

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