Process, apparatus and tool for cutting a tubular bar

Details Process, apparatus and tool for cutting a tubular bar Process, apparatus and tool for cutting a tubular bar

B - Operations, Transporting

26

D

B26D 1/15 (2006.01) B23D 21/04 (2006.01) B26D 3/16 (2006.01)

Patent

CA 2213068

A process carried out by an apparatus for cutting a tubular bar comprises a first cutting stage performed by a first disc-shaped rotary cutting tool, oriented so as to rotate about an axis parallel to a line of extension of the bar and also movable gradually along the contour of the bar, which is made to penetrate into the peripheral wall of the bar over a distance less than the thickness thereof, forming a groove therein. In a second and successive cutting stage, a second stationary cutting tool, oriented transversely with respect to the line of extension of the bar and movable along the contour of the bar inside the groove, is made to penetrate into the remaining thickness of the peripheral wall so as to cause gradual shearing of the bar.

Méthode employée dans une installation utilisée pour couper des éléments tubulaires; la méthode comporte une première étape réalisée au moyen d'un outil de coupe rotatif en forme de disque tournant selon un axe parallèle à l'élément tubulaire et qui, en déplacement autour de l'élément tubulaire, pénètre la paroi extérieure sur une profondeur inférieure à son épaisseur, produisant une rainure circulaire. Une deuxième étape fait appel à un outil de coupe à poste fixe orienté transversalement à l'axe longitudinal de l'élément tubulaire et qui, en déplacement autour de l'élément tubulaire, est inséré dans la rainure circulaire pour pénétrer graduellement l'épaisseur résiduelle de la paroi jusqu'au sectionnement complet de l'élément tubulaire.

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