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Proceedings Paper

Surface roughness measurement of tooling spheres for laser measurements
Author(s): Dennis P. Sarr; Paul W. Reed
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Paper Abstract

The usage of chrome or highly polished precision tooling (reference) spheres is common in the calibration and operational characterization of measurement systems such as a Coordinate Measurement Machine (CMM). The usage of a three-dimensional, (3D) laser triangulation, non-contact measurement system on CMMs and other scanning systems pose several obstacles. The highly specular mirror finish on the tooling sphere provides an accurate mechanical entity that has adverse results with laser sensors. The development of tooling spheres with a diffuse surface would benefit laser based measurement systems. The surface roughness and reflectivity properties have an effect on the laser measurements' accuracy. Efforts to develop spheres and establish meaningful measurements of spheres with modified surface finishes are investigated.

Paper Details

Date Published: 12 February 2001
PDF: 10 pages
Proc. SPIE 4189, Machine Vision and Three-Dimensional Imaging Systems for Inspection and Metrology, (12 February 2001); doi: 10.1117/12.417198
Show Author Affiliations
Dennis P. Sarr, Boeing Co./Phantom Works (United States)
Paul W. Reed, Boeing Co./Phantom Works (United States)

Published in SPIE Proceedings Vol. 4189:
Machine Vision and Three-Dimensional Imaging Systems for Inspection and Metrology
Kevin G. Harding; John W. V. Miller; Bruce G. Batchelor, Editor(s)

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