Clinching tool, die and method for use thereof

Details Clinching tool, die and method for use thereof Clinching tool, die and method for use thereof

B - Operations, Transporting

21

D

B21D 39/00 (2006.01) B21D 39/03 (2006.01)

Patent

CA 2586776

A clinching tool for mechanically interconnecting at least two stacked sheets manufactured of a ductile material comprises a punch and a die axially aligned thereto. The die cavity features a radiused surface profile at its closed end thus facilitating material flow therein during clinching action. This design, while minimizing tooling material stresses and reducing the likelihood of premature tooling failure, allows for clinch fastening of thicker sheets by forming a secure and distinguishable clinch.

L'invention concerne une pince à river permettant de rassembler mécaniquement au moins deux feuilles empilées composées d'une matière ductile, ladite pince comprenant un perforateur et un poinçon alignés axialement. La cavité du poinçon présente un profil de surface rond au niveau de son extrémité fermée, ce qui permet de faciliter l'écoulement de matière, pendant l'action de rivure. Tandis que ce modèle, permet de minimiser des contraintes de matière et de diminuer la probabilité d'une défaillance d'usinage prématurée, il sert à fixer par rivure des feuilles plus épaisses, au moyen de la formation d'une rivure sécurisée et distincte.

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