Tube cutting machine with break off means

Details Tube cutting machine with break off means Tube cutting machine with break off means

B - Operations, Transporting

26

D

164/51

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

Patent

CA 1077388

TUBE CUTTING MACHINE WITH BREAK OFF MEANS ABSTRACT OF THE DISCLOSURE A tube cutting machine has a cutting station and an in- termittently 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 (3) radially movable ro- tary cutters or rollers which effect a partial cut at each trail- ing 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. The adjustable means comprises an adjustably mounted limit switch which terminates operation of an air cylinder which in turn effects a drive belt deflection result- ing in an angular displacement of a cutter actuator pulley rela- tive to a head driving pulley. With a circumferentially uniform partial out of controlled depth, a subsequent break-off operation effects a clean break with minimal ID reduction. Break off means comprise a quill and an air cylinder and, alternatively, a hinged break off supporting cylinder swingably operated by an air cylinder. -1-

302580

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