Patent ID: 8966950
Filing Date: 2015-03-03
Classification: B21D,B23H,Y10S,Y10T

Abstract:
1. A method of reinforcing a part comprising: forming a metal panel into a three dimensional shape that includes a predetermined area requiring reinforcement; placing the predetermined area between a one-sided die and an electro-hydraulic chamber that includes a first plurality of wire electrodes that extend in a first direction; discharging a stored electrical charge through the sires to form a first set of grooves into a V-shaped cross-section having an internal radius of less than one-half the thickness of the panel in the one-sided die; placing the predetermined area between the one-sided die and the electro-hydraulic chamber that includes a second plurality of wire electrodes that extend in a second direction that is different than the first direction; and discharging a stored electrical charge through the wires to form a second set of grooves into a V-shaped cross-section having an internal radius of less than one-half the thickness of the panel, wherein the first and second sets of grooves intersect at a predetermined angle.