Method of making a ring

Details Method of making a ring Method of making a ring

B - Operations, Transporting

21

K

B21K 1/76 (2006.01) B21D 53/16 (2006.01)

Patent

CA 2725746

A method of making a ring comprising cutting a raw material stock to a predetermined length, cutting a slit through the raw material stock along its length to form a blank (10), inserting the blank (10) into a tool, expanding the middle of the slit while simultaneous-ly applying a compressive force to the ends of the blank, and expanding the middle of the slit until the blank is round

L'invention concerne un procédé de fabrication d'un anneau comprenant la découpe d'un demi-produit de matière première selon une longueur prédéterminée, la découpe d'une fente au travers du demi-produit de matière première le long de sa longueur pour former un flan (10), l'insertion du flan (10) dans un outil, l'expansion de la partie centrale de la fente tout en exerçant simultanément une force de compression sur les extrémités du flan, et l'expansion de la partie centrale de la fente jusqu'à ce que le flan devienne rond.

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