Method and apparatus for producing forging by rotary forging
AssigneeHitachi Metals, Ltd.
InventorsEiji SHIMOHIRA, Koji SATO, Tsuyoshi FUKUI
Life of this patent
Estimating the term…
Abstract
A cycle is repeated a plurality of times, which includes a forging process for placing a material to be forged in a lower die and pressing the material to be forged in this state and then separating an upper die from the material to be forged; an elevation process for lifting the material to be forged by using an elevation device to separate the material to be forged from the lower die; a rotation process for rotating the material to be forged around its center by using a rotation device; and a lowering process for placing the material to be forged rotated by the elevation device in the lower die.
Claims12
A method for producing a forging by rotary-forging a material to be forged, the method comprising:
- a forging step for pressing an upper die against the material to be forged placed on a lower die and then separating the upper die from the material to be forged;
- a lifting step for lifting and separating the material to be forged from the lower die by using elevation means;
- a rotation step for rotating the material to be forged around a center thereof in a state in which the material to be forged is separated from the lower die;
- and
- a lowering step for placing the rotated material to be forged onto the lower die by the elevation means, and
- wherein a cycle including the steps from the forging step to the lowering step is repeated a plurality of times.
A rotary forging apparatus comprising:
- an upper die configured to press a material to be forged;
- a lower die on which the material to be forged is placed;
- elevation means configured to lift and separate the material to be forged from the lower die, lower the material to be forged, and place the material to be forged in the lower die;
- and
- rotation means configured to rotate the material to be forged around a center thereof in a state in which the material to be forged is separated from the lower die.
Dependencies are inferred from the claim text.