Projection welded panel spacer and method of making the same

Details Projection welded panel spacer and method of making the same Projection welded panel spacer and method of making the same

B - Operations, Transporting

62

D

B62D 21/09 (2006.01) B21D 35/00 (2006.01) B21D 47/00 (2006.01) B21D 51/10 (2006.01) B23K 11/00 (2006.01) B23K 11/14 (2006.01) B23K 33/00 (2006.01)

Patent

CA 2310093

A method for making a spacer assembly comprises: forming a plurality of projections (56) along an edge of a portion of sheet metal; roll forming the portion of sheet metal into a tubular configuration (72); positioning the roll formed portion of sheet metal and a metal base member (16) to which the roll formed portion of sheet metal is to be welded in a discharge welding apparatus having a pair of electrodes so that the projections (56) of the roll formed portion of sheet metal contact a surface of the metal base member (16); providing a force so that the projections are disposed in forcible engagement with the surface of the metal base member, and supplying an electrical current between the pair of electrodes and through the roll formed portion of sheet metal and the metal base member so that the projections reach a molten metal stage and are subsequently solidified to enable the roll formed portion of sheet metal to be welded to the metal base member.

Cette invention concerne un procédé de fabrication d'un système d'espacement, lequel procédé comprend les étapes suivantes: former plusieurs protubérances (56) sur le bord d'un morceau de tôle métallique; former par laminage le morceau de tôle métallique de manière à obtenir une configuration tubulaire (72); placer le morceau de tôle métallique formé par laminage ainsi qu'un élément de base métallique (16) auquel ledit morceau doit être soudé dans un appareil de soudage par décharge et comprenant deux électrodes, ceci de manière à ce que les protubérances (56) du morceau de tôle métallique formé par laminage entrent en contact avec une surface de l'élément de base métallique (16); appliquer une force de manière que les protubérances entrent en contact par pression contre la surface de l'élément de base métallique; et envoyer un courant électrique entre les électrodes ainsi qu'à travers ledit morceau de tôle métallique et l'élément de base métallique de sorte que les protubérances atteignent le niveau de fusion du métal et qu'elles se solidifient ensuite afin de souder ledit morceau de tôle à l'élément de base.

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