Title:
【発明の名称】大口径リングの鍛造装置
Document Type and Number:
Japanese Patent JPH07100209
Kind Code:
B2
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.
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Inventors:
Hiroaki Moriya
Murao Etsuo
Takashi Idei
Murao Etsuo
Takashi Idei
Application Number:
JP20454291A
Publication Date:
November 01, 1995
Filing Date:
July 22, 1991
Export Citation:
Assignee:
Japan Steel Works, Ltd.
International Classes:
B21H1/06; B21H1/18; B21J9/02; B21J9/12; B21K1/76; B21K21/06; B30B1/32; (IPC1-7): B21K21/06; B21H1/06; B21J9/02; B30B1/32
Domestic Patent References:
| JP539182B2 | ||||
| JP5134379B2 | ||||
| JP5929339B2 |
Attorney, Agent or Firm:
Hiroyuki Maeda