Apparatus for forging a large caliber ring

Details Apparatus for forging a large caliber ring Apparatus for forging a large caliber ring

1992-07-22

1993-12-21

Crane, Daniel C.

Metal deforming

With means to drive tool

Including pneumatic- or fluid-actuated tool support

7245318, 72307, 100269R, B21J 912

Patent

active

052712621

ABSTRACT:
A large caliber ring forging apparatus which is able to uniformly forge a ring blank. The apparatus includes a vertical cylinder device (4) adapted such that a vertical ram (4a) thereof is pressurized by a source of pressurization and a horizontal cylinder device (5) adapted such that a horizontal ram (5a) is allowed to execute its forward operation by a pressurized liquid supplied from the vertical cylinder device (4). An anvil (6) is removably secured to the horizontal ram (5a) and to a return cylinder device (7) connected to a hydraulic pressure supply source (8) for returning the anvil 6 to a return position. Disposed in opposition to the anvil is a mandrel (9) used to forge a ring blank (15) and supported by upper and lower tension bars (3, 11). A table roller device (14) supports the ring blank and rotationally drives the ring blank (15). A plurality of the above-mentioned vertical cylinder devices (4) are disposed in a horizontal direction and a plurality of the above-mentioned horizontal cylinder devices (5) are disposed in a vertical direction. The respective vertical cylinder devices 4 are connected to the separate horizontal cylinder devices 5 by means of separate liquid passages (10a, 10b) and the operation strokes of each set of vertical/horizontal cylinder devices (4, 5) are set to be equal to one another.

REFERENCES:
patent: 2182401 (1939-12-01), Kreis
Soviet Invention Illustrated Section Ch, Week 9017, Jun. 6, 1990, Derwent Publications Ltd, London Great Britain; Class M, AN 90-130900 and SU-A-1 493 378, Jul. 15, 1989 (Abstract).

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