GB1423639A - Rolling mill for shaping bars - Google Patents

Abstract

1423639 Rolling mills R P KRAUSE 17 July 1974 31627/74 Heading B3M A mill for tapering bars includes a housing through which extend longitudinal guide beams 21 on which two carriages are fed; a work carriage 25 supporting a heated bar on an anvil 30, and a roll carriage 7 supporting rolls 8 and 9, the upper roll 8 of which co-operates with a fixed template 16 in the housing to taper the upper surface of the bar. From the position shown (Fig. 2), the carriage 25 is moved to the right until the middle of the bar is between the rolls, the carriage 7 then being moved with the work carriage. The lower roll 9 transmits rolling forces from the bottom of the carriage 25 to a fixed base 5 of the housing during rolling. As the upper roll 8 is forced to approach the bar by the template 16, tapering takes place from the centre of the bar towards its left hand end, the roll carriage 7 now moving more slowly than the work carriage. When one half of the bar has been tapered, the template 16 is moved laterally in the stand by a ram 46 (Fig. 3) and a further template 36 (tapering in the opposite sense) placed in position. Reverse movement of the carriages then tapers the right hand half of the bar. The templates are held in place by tapered dovetail connections and are longitudinally movable to adjust their vertical positions.