GB1260807A - Cross-wedge rolling machines - Google Patents

Abstract

1,260,807. Transverse rolling. VYZKUMNY USTAV TVARECICH STROJU A TECHNOLOGIE TVARENI. 12 May, 1970, No. 22829/70. Heading B3M. A cross-wedge rolling machine, in which a workpiece 3 is rolled between wedge-shaped tools 4, 4<SP>1</SP> on rolls 5, 5<SP>1</SP>, incorporates first and second guiding and feeding means 7, 15; and 6, for axially feeding a workpiece between the rolls. When the front end of a workpiece has been heated by an induction heater 14 to the required temperature, it is clamped by jaws 15 and moved from a position A, Fig. 4, to a position B. The bush 7, which also moves to position B, contacts a switch 16 which effects movement of the bush 6 from a position C to a position D. The jaws 15 release the workpiece and together with the bush 7 return to the position A where they clamp on to the workpiece again. This clamping and releasing action is repeated until the workpiece enters a recess 21 in the stop 1 causing movement of element 17 which actuates the roll drive for a single rotation. During the rolling, the bush 1 is moved out of the working space to the left as seen in Fig. 10 by the expansion of the rolled workpiece while the bush 6 is moved out of the working space to the right by the same distance by the edge 22 of wedge 4. When the rolling process is finished, Fig. 11, the rolled part 24 is severed and cam 12 on the roller 5<SP>1</SP> engages switch 13 which causes clamping of jaws 15 and bush 7 on to the workpiece at the position A. The jaws and bush subsequently move to position B which actuates the switch 16 to cause the release of the workpiece by the jaws 15 and bush 7 and clamping of the workpiece by bush 6. The bush 6 is also moved into the position D and the working cycle repeated.