Method and apparatus for making forming pins

B - Operations – Transporting – 21 – G

Patent

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Details

B21G 3/00 (2006.01) B21G 3/12 (2006.01) B21G 3/16 (2006.01) B21G 3/20 (2006.01) F16B 19/14 (2006.01)

Patent

CA 2089050

A forming pin having a shank, a head, a point and a pair of like grooves on opposite sides of the shank is made by gripping an elongate wire in a position wherein an end of the wire is exposed, forming a head at the exposed end of the wire while gripped, advancing the wire by a predetermined distance and simultaneously forming the point and forming the grooves. The forming pin thus formed is severed from the remaining wire as the point and the grooves are formed. A pair of dies are used, which are movable so as to pinch the wire therebetween, along with mechanisms for closing the dies. The dies are configured similarly to define suitable forming edges.

Goujon de formage comportant une tige, une tête, une pointe et une paire de rainures de part et d'autre de la tige; celui-ci est obtenu en immobilisant un fil dans un dispositif de serrage de telle sorte qu'une de ses extrémités soit exposée; une tête est formée à l'extrémité du fil ainsi immobilisé; on fait alors avancer le fil sur une distance prédéterminée pour ensuite former simultanément la pointe et les rainures latérales. Le goujon de formage ainsi obtenu est sectionné du reste de la bobine de fil au moment où la pointe et les rainures sont formées. Une paire de matrices sont utilisées pour pincer le fil et rapprochées l'une de l'autre au moyen d'un dispositif mécanique. Les matrices sont configurées de même façon en vue de définir des empreintes de forme appropriée.

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