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Proceedings Paper

Laser Sensor For Adaptive Welding
Author(s): Bretislav Beranek; Jean-Paul Boillot; F P Ferrie
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Paper Abstract

An autosynchronized laser scanning mechanism is integrated in a compact, mobile unit mounted on a six axis, articulated robot wrist. This camera combines a new geometrical arrangement for improving the performance of optical triangulation with the latest solid-state laser and CCD sensor technology. The camera enables in-process, 3D mea-surements of the welded workpiece and the optimization of the robotic arc welding process. Joint and weld geometry analysis can be performed in real time with high precision, even during high current arc welding. This provides information about weld joint geometry in front of the arc (e.g. seam tracking) and behind the weld pool (e.g. inspection of finished welds), both of which are required for closed loop adaptive welding. High dimensional resolution combined with high signal to noise ratio provides an ideal tool for the further development of expert welding systems. Furthermore, the vision system can be used for the generation of 3D object data, which can be used in conjunction with a computer graphics system for offline robot programming.

Paper Details

Date Published: 23 October 1986
PDF: 5 pages
Proc. SPIE 0665, Optical Techniques for Industrial Inspection, (23 October 1986); doi: 10.1117/12.938744
Show Author Affiliations
Bretislav Beranek, Servo-Robot (Canada)
Jean-Paul Boillot, Servo-Robot Inc. (Canada)
F P Ferrie, Servo-Robot Inc. (Canada)


Published in SPIE Proceedings Vol. 0665:
Optical Techniques for Industrial Inspection
Paolo G. Cielo, Editor(s)

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