Installation for laser welding of overlapping parts

Details Installation for laser welding of overlapping parts Installation for laser welding of overlapping parts

B - Operations, Transporting

23

K

B23K 26/02 (2006.01) B23K 26/24 (2006.01)

Patent

CA 2296756

The invention concerns an installation (2) for laser welding of two overlapping parts (4, 5) comprising a laser source (16), a head (18) focusing, in the overlapping zone (6), a laser beam emitted by the source, a support mechanism (24) on one first part (4) designed to co-operate with means (26) retaining another part (5) to maintain the parts to be welded against each other at their overlapping zone, and means (10, 14) for displacing the head relatively to the overlapping zone of the parts to be welded. The support mechanism (24) is subjected to the displacement of the head parallel to the overlapping zone. The support mechanism comprises a support element (44) for running means designed to run on the first part (4). Said element is freely rotating about an axis. The running means are automatically oriented in the head (18) displacement direction parallel to the overlapping zone (6) by said element rotation. The invention is useful for welding metal sheets for external covering of railway car bodies.

Cette installation (2) de soudage laser d'au moins deux pièces (4, 5) en chevauchement comprend une source laser (16), une tête (18) de focalisation, dans la zone de chevauchement (6), d'un faisceau laser émis par la source, un mécanisme (24) d'appui sur une première (4) des pièces destiné 8 coopérer avec des moyens (26) de retenue d'une auge pièce (5) pour maintenir les pièces à souder l'une contre l'autre su niveau de leur zone de chevauchement, et des moyens (10, 14) de déplacement relatif de la tête par rapport à la zone de chevauchement des pièces il souder. Le mécanisme (24) d'appui est assujetti au déplacement de la tête parallèle à la zone do chevauchement. Le mécanisme d'appui comprend un élément (44) d'appui de moyens de roulement destinés à rouler sur la première pièce (4). Cet élément est libre en rotation autour d'un axe. Les moyens de roulement s'orientent automatiquement dans la direction de déplacement de la tête (18) parallèlement à la zone de chevauchement (6) par rotation dudit élément. Application au soudage de tôles d'habillage extérieur de caisses de véhicules ferroviaires.

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