发明名称 |
Apparatus for forging a large caliber ring. |
摘要 |
<p>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. <IMAGE></p> |
申请公布号 |
EP0524815(A1) |
申请公布日期 |
1993.01.27 |
申请号 |
EP19920306713 |
申请日期 |
1992.07.22 |
申请人 |
THE JAPAN STEEL WORKS, LTD. |
发明人 |
MORITANI, HIROAKI;MURAI, ETSUO;DEI, TAKAYOSHI |
分类号 |
B21H1/06;B21H1/18;B21J9/02;B21J9/12;B21K1/76;B21K21/06;B30B1/32 |
主分类号 |
B21H1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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