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Proceedings Paper

Measuring coaxiality and perpendicularity of the axis-to-end plane using optical method
Author(s): Qun Hao; Yang Zhao; Dacheng Li; Mang Cao
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Paper Abstract

In this paper a novel method of measuring coaxiality and perpendicularity using laser alignment, diffraction imaging and CCD image detecting is proposed. In this method, we use a laser diode fiber alignment beam as the datum reference of straightness, deviation of the center of the hole from this datum, coaxiality, can be detected by a CCD camera. By rotating a penta-prism that makes this alignment beam bend a right angle a scanning datum plane is generated which can be used to detect the perpendicularity of the axis to an end plane. In the paper the factors that affect the accuracy of the system are analyzed. The experiment result shows that the measurement accuracy of the system is 3 + 2.3 X 10+6.

Paper Details

Date Published: 7 July 1997
PDF: 4 pages
Proc. SPIE 3174, Videometrics V, (7 July 1997); doi: 10.1117/12.279795
Show Author Affiliations
Qun Hao, Tsinghua Univ. (China)
Yang Zhao, Tsinghua Univ. (United States)
Dacheng Li, Tsinghua Univ. (China)
Mang Cao, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 3174:
Videometrics V
Sabry F. El-Hakim, Editor(s)

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