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Proceedings Paper

Adaptive welding of fillet welds using a fast seam-tracking sensor in combination with a standard industrial robot
Author(s): Alexandra Pischetsrieder
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Paper Abstract

In laser welding, problems often arise from the accuracy required by the laser process, particularly where joints have narrow tolerance limits, e.g. with a fillet weld at an overlap joint. In a number of applications seam-tracking sensors can improve this situation. They are able to detect and follow the joint geometry autonomously. In addition to the tolerances, a varying gap between the parts to weld can cause welding flaws. To solve the problems caused by the height of the gap a functionality for adaptive welding can be integrated into the tracking sensor, rendering possible a determined influence on process parameters. Functional dependencies between the height of the gap and the welding parameters are presented in this paper. To further enhance the accuracy of path tracking the dynamic behavior of the system is investigated. With the integration of these dependencies into the tracking sensor, an algorithm for adaptive welding has been obtained, which takes another step towards the raise of profitability of laser installations by a simplified weld seam preparation and an enhanced stability of the welding process.

Paper Details

Date Published: 26 August 1996
PDF: 10 pages
Proc. SPIE 2787, Rapid Prototyping, (26 August 1996); doi: 10.1117/12.248589
Show Author Affiliations
Alexandra Pischetsrieder, Technische Univ. Muenchen (Germany)

Published in SPIE Proceedings Vol. 2787:
Rapid Prototyping
Rolf-Juergen Ahlers; Gunther Reinhart, Editor(s)

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