Method and device for thermally supporting mechanical joints

Details Method and device for thermally supporting mechanical joints Method and device for thermally supporting mechanical joints

B - Operations, Transporting

21

J

B21J 15/08 (2006.01) B21J 15/02 (2006.01) B23K 11/11 (2006.01)

Patent

CA 2310396

The invention relates to a method and device for thermally supporting mechanical joints by means of punched rivets with a semi-hollow rivet or a solid rivet or by pounding. The method is characterized in that a local and time limited heating of the joint parts (1a, 1b) occurs by means of electric resistance heating in the future forming zone, whereby the heating is carried out by means of a hold-down device (5) and a matrix (4) or by elements (10/11, 12/13) arranged next to or elements (14, 15) arranged in front of said hold- down device and matrix. The heating is initiated at the start of or immediately before the joining process and is completed before the forming begins.

L'invention concerne un procédé pour l'assemblage mécanique assisté par chauffage, par rivetage-poinçonnage au moyen de rivets semi-creux ou de rivets pleins ou par perçage. Le procédé est caractérisé en ce que dans la future zone de déformation, on effectue un chauffage, d'une durée limitée, des pièces à assembler (1a, 1b), par chauffage électrique par résistance, le chauffage s'effectuant par serre-flan (5) et matrice (4) ou par ces éléments ajoutés (10/11, 12/13) ou pré-agencés (14, 15), le chauffage étant déclenché au début du processus d'assemblage ou immédiatement avant et devant être terminé avant le début de la déformation.

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