Method and device for the optical assessment of welding quality during welding
AssigneePrecitec Vision GmbH & Co. KG
InventorJoachim Schwarz
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Abstract
In laser welding, the welding area is depicted coaxially in relation to the laser beam (3) through the laser optics (4), wherein not only a triangulation line and a grey or colour image of the solidified weld is recorded but also the process radiation of the welding process. From these three image elements, an optimum quality assessment of the welding process and of the weld can be made.
Claims22
A method for optical assessment of welding quality during welding, in particular during laser welding or during arc welding, in the case of which the welding zone is observed by an optical sensor, and a laser triangulation line is laid over the already solidified part of the weld, characterized in that on the one hand the process illumination of the still liquid welding material shining in the visible region, and on the other hand a gray or color image of the solidified weld and the laser triangulation line are recorded in various image regions (A, B).
Dependencies are inferred from the claim text.