Tool for setting self-piercing rivets

B - Operations – Transporting – 21 – J

Patent

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Details

B21J 15/10 (2006.01) B21J 15/02 (2006.01) B21J 15/36 (2006.01)

Patent

CA 2355343

The invention relates to a tool for applying punched rivets, especially full rivets or semi-tubular rivets (14), comprising a blank holder for pretensioning assembly pieces, especially metal sheets (2,3); a rivet punch (25) that can move in an axial direction (26) in a cylinder (24) pertaining to the blank holder (24), whereby pressure can be exerted on the punch; and a die (26) that is arranged opposite the blank holder (20) and provided with an elevation (34) on a section of the front surface (36) facing the rivet punch (20). Outside the elevation (34), the front surface (36) of the die is radially divided and the outer sections (35) of the front surface (36) can be moved towards each other according to the penetration depth of the rivet (14) in the assembly pieces (2,3) or the force that the rivet punch (25) exerts on the rivet (26).

L'invention concerne un outil de pose de rivets, notamment de rivets pleins ou de rivets semi-tubulaires (14). Cet outil comprend un presseur (20) permettant de serrer les pièces à assembler, notamment des tôles (2, 3), une bouterolle (25) qui est mobile dans un cylindre (24) du presseur (20) dans le sens axial (26) et sur laquelle on peut appliquer une force ainsi qu'une matrice (27) opposée au presseur (20). Une section de la surface frontale (36), faisant face au presseur (20), de la matrice (27) est pourvue d'une élévation (34). La surface frontale (36) de la matrice a une division radiale en dehors de l'élévation (34) et les sections extérieures (35) de la face frontale (36) peuvent être rapprochées en fonction de la profondeur de pénétration du rivet semi-tubulaire (14) dans les pièces à assembler (2, 3) ou par la force que la bouterolle (25) exerce sur le rivet semi-tubulaire (14) dans le sens axial (26).

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