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Electrical-assisted double side incremental forming and processes thereof

United States Patent

June 3, 2014
View the Complete Patent at the US Patent & Trademark Office
A process for forming a sheet metal component using an electric current passing through the component is provided. The process can include providing a double side incremental forming machine, the machine operable to perform a plurality of double side incremental deformations on the sheet metal component and also apply an electric direct current to the sheet metal component during at least part of the forming. The direct current can be applied before or after the forming has started and/or be terminated before or after the forming has stopped. The direct current can be applied to any portion of the sheet metal. The electrical assistance can reduce the magnitude of force required to produce a given amount of deformation, increase the amount of deformation exhibited before failure and/or reduce any springback typically exhibited by the sheet metal component.
Roth; John (Mckean, PA), Cao; Jian (Wilmette, IL)
The Penn State Research Foundation (University Park, PA), Northwestern University (Evanston, IL)
13/ 221,304
August 30, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Grant No. DE-EE0003460, awarded by the Department of Energy. The Government has certain rights in the invention.