Title: Accuracy improvement of laser line scanning for feature measurements on CMM
Authors: Igor, Bešić ×
Van Gestel, Nick
Kruth, Jean-Pierre
Bleys, Philip
Hodolič, Janko #
Issue Date: Nov-2011
Publisher: Applied Science Publishers
Series Title: Optics and Lasers in Engineering vol:49 issue:11 pages:1274-1280
Abstract: Because of its high speed and high detail output, laser line scanning is increasingly included in coordinate metrology applications where its performance can satisfy specified tolerances. Increasing its accuracy and repeatability will open the possibility to use it in other areas where contact methods are still dominant. Multi sensor systems allow to select discrete probing or scanning methods to measure part elements. Decision is often based on the principle that tight toleranced elements should be measured by contact methods, while other more loose toleranced elements can be laser scanned. This paper aims to introduce a method for improving the output of a CMM mounted laser line scanner for metrology applications. This improvement is achieved by filtering of the scanner's random error and by combination with widely spread and reliable but slow touch trigger probing. The filtered point cloud is used to estimate the form deviation of the inspected element while few tactile obtained points were used to effectively compensate for errors in the point cloud position.
ISSN: 0143-8166
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Production Engineering, Machine Design and Automation (PMA) Section
× corresponding author
# (joint) last author

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