Device for cutting bar-shaped or tubular workpieces

Details Device for cutting bar-shaped or tubular workpieces Device for cutting bar-shaped or tubular workpieces

B - Operations, Transporting

23

B

B23B 5/12 (2006.01)

Patent

CA 2653897

A device for cutting bar-shaped or tubular workpieces (1, 27), for example a peeling machine, is presented, in which, for the first time, the advance of the tools (7, 26, 44, 46) is brought about by a relative rotation between a toolholder (3, 25, 45) carrying the tools (7, 26, 44, 46) and an advancing sleeve (4, 24, 47). The toolholder (3, 25, 45) and advancing sleeve (4, 24, 47) are driven via gearwheels (19, 18) arranged on the same gear shaft (17) and having an oppositely oriented helical toothing. By means of an axial movement of the gear shaft (17), a relative rotation between the toolholder (3, 25, 45) and advancing sleeve (4, 24, 47) is achieved on account of the helical toothing. Moreover, it is proposed to use milling cutters (26, 44) as tools.

L'invention concerne un dispositif pour usiner des pièces en forme de barre ou de tuyau (1, 27) par enlèvement de copeaux, par exemple une machine à écroûter. Les outils (7, 26, 44, 46) sont avancés en premier lieu au moyen d'un mouvement de rotation relatif entre un porte-outil (3, 25, 45) qui supporte les outils (7, 26, 44, 46) et un manchon d'avance (4, 24, 47). Le porte-outil (3, 25, 45) et le manchon d'avance (4, 24, 47) sont entraînés par l'intermédiaire de roues dentées (19, 18) qui sont disposées sur le même arbre d'entraînement (17) et qui comportent une denture oblique à orientation opposée. Un mouvement axial de l'arbre d'entraînement (17) induit en mouvement de rotation relatif entre le porte-outil (3, 25, 45) et le manchon d'avance (4, 24, 47), en raison de cette denture oblique. Selon l'invention, les outils peuvent se présenter sous la forme de fraises (26, 44).

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