B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
B23D15/06—Sheet shears
B23D15/10—Sheet shears with a blade moved in a curved surface, e.g. for producing an edge with a curved cross-section
Procede et dispositif de tronconnage d'une piece tubulaire de grand diametre en materiau rigide notamment a section ovalisee, telle qu'un tuyau en fonte