Abstract: A method and apparatus for cutting pipes into sections are described. A punching unit (7) forms apertures (8) in strip (2) from which pipe (4) is formed on winding core (3). A cutting device (5) has a circular shears (10) which has a first, smaller-diameter cutting roller (13) and a second cutting roller (14) each having two cutting edges. The first cutting roller (13) is swivelled through aperture (8) into the pipe (4). Rotary movement of the pipe (4) effects cutting, during which the cutting rollers (13, 14) move in synchronism with the pipe (4) so that the pipe is cut from the inside and the outside by the cutting rollers (13, 14).

Abstract: A tube cutting machine has a cutting station and an intermittently operable feed means comprising an air cylinder operating a feed clamp assembly. The cylinder and clamp assembly axially advance an elongated section of tubing to present trailing end portions of leading end tube sections at the cutting station. A cutting clamp assembly securely holds the tube rearwardly of each trailing end portion for the cutting operation. A centrally apertured rotary cutting head has three radially movable rotary cutters or rollers which effect a partial cut at each trailing end portion. The cutting head and its operating means include positive mechanical actuating means for the small rotary cutters or rollers and an adjustable means is provided for precisely limiting inward cutter or roller movement in accordance with tube diameter and wall thickness.