| 摘要 |
PCT No. PCT/GB93/00438 Sec. 371 Date Nov. 4, 1993 Sec. 102(e) Date Nov. 4, 1993 PCT Filed Mar. 3, 1993 PCT Pub. No. WO93/17803 PCT Pub. Date Sep. 16, 1993.A cutting apparatus usable in a machine having a forming head for helically winding a metal strip into a helically wound metal tubing and for issuing the helically wound metal tubing along a defined path. The apparatus includes a first mounting for supporting the forming head, and a carriage guided and longitudinally movable along the first mounting in a direction of travel parallel to the defined path. A cantilever boom has one end mounted to a first end of the carriage and a free end opposite to the one end. The boom extends generally parallel to the direction of travel. A cutting blade is connected to the free end of the cantilever boom and extends in a plane generally perpendicular to the direction of travel. A second mounting is guided with the carriage and is extendible in a direction generally perpendicular to the direction of travel. A rotary shaft is carried by the second mounting. A cutting wheel is mounted to the rotary shaft and extends in the plane generally perpendicular to the direction of travel to cooperate with the cutting blade. The cutting wheel is movable both toward and away from the cutting blade to penetrate a wall of the helically wound metal tubing interposed therebetween. A driving motor with a drive shaft is mounted on a second end of the carriage. A universally jointed transmission shaft couples the rotary shaft to the drive shaft of the driving motor and allows for the extending of the second mounting. |
