Apparatus and method for laser welding in a hemmer apparatus

Details Apparatus and method for laser welding in a hemmer apparatus Apparatus and method for laser welding in a hemmer apparatus

B - Operations, Transporting

23

K

B23K 26/02 (2006.01) B23K 26/20 (2006.01) B23K 26/24 (2006.01) B23K 33/00 (2006.01)

Patent

CA 2306604

A hemmer apparatus has at least one welding laser attached to the moveable crown for controlled welding of the hemmed panels to hold the panels with respect to one another, at least temporarily, and/or to maintain geometry between the panels until permanently fixed, such as when the adhesive cures or when additional welding is performed. Laser welding in the hemmer apparatus can be performed by providing relief in the steel used to form the hem, or by providing a tab in the hem material extending beyond the steel forming the hem, or a combination of the two, in order to allow access of the laser beam to the location where the geometry stabilizing tack weld is desired to be placed. Multiple welds are placed in spaced locations about the periphery of the hemmed panels as required for the specific application.

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