Metal deforming – By application of fluent medium – or energy field – By kinetic energy of fluid or field
Reexamination Certificate
2008-05-05
2010-11-09
Jones, David B (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
By kinetic energy of fluid or field
C072S063000, C072S707000, C029S421100, C029S421200
Reexamination Certificate
active
07827838
ABSTRACT:
A tooling method for calibrating a partially formed metal part in an electro-hydraulic forming tool. The method includes loading a partially formed metal part onto a forming surface of a die. The part is then clamped onto the forming surface and the part is pulsed with a high rate energy pulse to overcome a spring-back effect in the part. The EHF calibration tool includes a punch to which a part is held by clamps while a capacitive discharge circuit is discharged through electrodes provided in the tool. Upon discharge of the capacitive discharge circuit through the electrodes, a high rate energy pulse is applied through a liquid to calibrate the part.
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Brooks & Kushman P.C.
Coppiellie Raymond L.
Ford Global Technologies LLC
Jones David B
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