High production laser welding assembly and method

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B23K 26/00 (2006.01) B23K 26/10 (2006.01) B23K 26/24 (2006.01) B23K 26/26 (2006.01)

Patent

CA 2072197

A method for butt welding metallic sheets along a relatively long common seam line by providing a plurality of laser welding devices aligned above the common seam line, and effectively spaced from one another along a longitudinal axis. In a preferred embodiment, each welding device is independently adjustable in a direction parallel to a transverse axis which is perpendicular to the longitudinal axis. The metallic sheets are aligned on the upper surface in abutting relationship along the seam line and clamped for welding. Each laser welds only a portion of the sheets along the seam line, and the length of the relative movement between the welding devices and the sheets is greater than the effective spacing distance between welding devices to insure that a continuous weld bead is provided along the common seam line.

Méthode de soudage bout à bout de feuilles métalliques avec joint de soudure commun de longueur relativement importante à l'aide d'une pluralité d'appareils de soudage au laser alignés au-dessus du joint de soudure commun, et espacés les uns des autres dans un axe longitudinal. Dans une version préférée, chaque appareil de soudage peut être réglé indépendamment dans une direction parallèle à un axe transversal perpendiculaire à l'axe longitudinal. Les feuilles de métal sont alignées en about le long du joint commun et maintenues en place par des pinces. Chacun des appareils de soudage au laser ne soude qu'une longueur déterminée du joint commun, et la longueur du mouvement relatif entre les appareils de soudage et les feuilles est supérieure à la distance qui sépare les appareils de soudage de façon à assurer la continuité de la soudure sur toute la longueur du joint.

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