PROCEDE ET DISPOSITIF DE TRONCONNAGE D'UNE PIECE TUBULAIRE EN MATERIAU RIGIDE,NOTAMMENT A SECTION OVALISEE TELLE QU'UN TUYAU EN FONTE

摘要

Cutting tools 12 are individually connected in common to rollers 2b supporting a rotationally driven tube T to be cut. The tools and rollers are paired mechanically such that the cutting edge of each tool and the tangent point G between the associated roller and the surface of the tube lie in the same radial plane passing through the longitudinal axis T-T of the tube. This arrangement makes it possible to maintain constant the penetration depth of the cutting tools into the surface of the tube even if the tube is oval or elliptical.