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US 11,235,369 B2Granted
Draw press die assembly and method of using the same
AssigneeHonda Motor Co., Ltd.
InventorsDennis O'Connor, Julio Malpica, Hideo Yazaki
Life of this patent
Estimating the term…
Abstract
A draw press die assembly includes an upper die, a lower die positioned beneath the upper die, a blankholder for supporting an associated workpiece, and a blankholder drive mechanism connected with at least one of the upper die and the blankholder. The blankholder drive mechanism is configured to provide a pulsating movement of the blankholder with respect to the upper die.
Claims17
A blankholder of a draw press, the blankholder comprising:
- a main blankholder;
- a sub blankholder movably connected to the main blankholder;
- and
- a blankholder drive mechanism mounted directly to the main blankholder;
- wherein the blankholder drive mechanism oscillates the sub blankholder relative to the main blankholder during operation of the draw press;
- wherein during the operation of the draw press, the blankholder drive mechanism oscillates the sub blankholder with respect to an upper die of the draw press such that the upper die and the sub blankholder release an associated workpiece during each movement of the sub blankholder away from the upper die during the oscillation;
- wherein the main blankholder and the sub blankholder directly contact each other at a common interface;
- and
- wherein during the operation of the draw press, the main blankholder presses against the upper die other than through the sub blankholder.
6 more elements
A draw press die assembly comprising:
- an upper die;
- a lower die positioned beneath the upper die;
- a blankholder for supporting an associated workpiece, the blankholder including:
- a main blankholder, and
- a sub blankholder movably connected to the main blankholder;
- and
- a blankholder drive mechanism mounted directly to the main blankholder;
- wherein the blankholder drive mechanism oscillates the sub blankholder relative to the main blankholder during operation of the draw press;
- wherein during the operation of the draw press, the blankholder drive mechanism oscillates the sub blankholder with respect to an upper die such that the upper die and the sub blankholder release the associated workpiece during each movement of the sub blankholder away from the upper die during the oscillation;
- wherein the main blankholder and the sub blankholder directly contact each other at a common interface;
- and
- wherein during the operation of the draw press, the main blankholder presses against the upper die other than through the sub blankholder.
9 more elements
A method of drawing a metal part comprising:
- moving an upper die in a downward direction toward the metal part positioned on a blankholder, wherein the blankholder includes a main blankholder, and a sub blankholder movably connected to the main blankholder;
- and
- controlling a blankholder drive mechanism mounted directly to the main blankholder to oscillate the sub blankholder relative to the main blankholder during said moving the upper die in the downward direction,
- wherein the oscillation of the sub blankholder includes movements of the sub blankholder away from and towards the upper die;
- wherein the sub blankholder includes an upper surface;
- wherein during said moving the upper die in the downward direction, the metal part is positioned between the upper surface and the upper die;
- wherein said moving the upper die in the downward direction, the blankholder drive mechanism oscillates the sub blankholder with respect to the upper die such that the upper die and the sub blankholder release the metal part during each movement of the sub blankholder away from the upper die during the oscillation;
- wherein the main blankholder and the sub blankholder directly contact each other at a common interface;
- and
- wherein during the operation of the draw press, the main blankholder presses against the upper die other than through the sub blankholder.
7 more elements
Dependencies are inferred from the claim text.