B - Operations – Transporting – 21 – K
Patent
B - Operations, Transporting
21
K
B21K 1/60 (2006.01) F16B 19/06 (2006.01) F16B 19/10 (2006.01)
Patent
CA 2679341
The invention relates to a method for making a rivet (R), of the type comprising, by deformation of the material of a substantially cylindrical metal segment, the operations of preforming a milled head (100) at the end of a rod (200), characterised in that it comprises, by deformation of the material (cold stamping) the following operations: creating a portion with a lower diameter (210) from the free end; creating a substantially cylindrical hollow core (220) for forming a tubular portion; preforming the hollow core (220) as a truncated cone; performing the lower diameter outer surface as a truncated cone. The invention also relates to the rivet obtained by said method.
L'invention concerne un procédé de fabrication d'un rivet (R) du type de celui comprenant par déformation du matériau d'un tronçon métallique sensiblement cylindrique, les opérations de préformation d'une tête fraisée (100) à l'extrémité d'une tige (200), remarquable en ce qu'il consiste à réaliser par déformation du matériau (frappe à froid) les opérations suivantes : création d'une partie de diamètre inférieur (210) à partir de l'extrémité libre, - création d'une âme creuse (220) sensiblement cylindrique pour former une partie tubulaire, - préformation en tronc de cône de l'âme creuse (220), - préformation en tronc de cône de la surface externe de moindre diamètre. L'invention concerne également le rivet obtenu selon ce procédé.
Eris
Robic
LandOfFree
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