TWO-ROLL MACHINE FOR ROLLLNG ARTICLES OF DISC FORM

摘要

1440412 Rolling metal discs N I INST TEKHNOL TRAKTOR I SELSK-KHOZ MASHINOSTROENIA 28 Aug 1974 37544/74 Heading B3M A disc rolling machine comprises a frame 2, 3 supporting pivots 4, 5, 6, 7 and part circular guides 11, Figs. 1 and 2, on which move two sliders 8, 9, a rolling head 28 on each slider and a work roll 46 on each head, Fig. 4, a disc-supporting carriage 57 movable on the frame, and drives for the various movements. As shown, the sliders are rotatable about their shafts by gears 21 engaging racks 23 on the sliders and driven by a common motor 12. Each rolling head 28 is adjustable on its slider about pivot 29 by jack 31 and toggle linkage 33, 34 adjustable by nuts 38. The workpiece 60 is supported by arms 58 urged to the holding position by spring 59 but operable by levers 63 operable by jack 62. Each roll 46 is supported in its head 28 in a spindle 41 mounted by radial and thrust bearings 39, 40, 42. The roll is retained by head 44, cone 43, and puller 45 and nuts 50. Each roll is driven by its own electric motor 51 through gears 52, 53, 54, 55. In operation, at the beginning of a cycle, the sliders are located remote from the central axis O-O, and the rolls are moved away from the rolling zone B by rotation of the heads on the sliders by retraction of jacks 31 and collapse of linkages 33, 34. The carriage 57 is withdrawn to a loading zone. Jack 62 is extended to permit loading of a workpiece on to the arms 58, and retracted to secure the workpiece. The carriage is advanced to position the workpiece in the rolling zone. The rolls are driven, and advanced into the rolling zone by extension of jacks 31 to straighten the toggles. The sliders are then rotated towards the axis O-O, while the carriage is automatically moved along axis O-O to position the workpiece suitably as rolling proceeds. When rolling is terminated by the sliders operating switches 24, 25, the starting position is resumed and the workpiece falls to a discharge device.