Metal deforming – By application of fluent medium – or energy field – With cutting
Reexamination Certificate
2008-05-05
2010-10-12
Jones, David B (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
With cutting
C072S056000, C072S057000, C072S060000, C072S063000, C072S700000, C029S419100, C029S421100
Reexamination Certificate
active
07810366
ABSTRACT:
A method of electrohydraulically trimming a blank involving positioning a blank on a trimming member having a cutting edge such that a portion to be trimmed extends over the cutting edge and is in fluid communication with a chamber. Immobilize the blank with respect to the trimming member. Position a pair of electrodes in the chamber proximate the portion of the blank to be trimmed such that the electrodes and the trimming member are on opposite sides of the blank. Electrically connect the electrodes to a capacitor. Charge the capacitor. Fill the chamber with fluid to submerge the electrodes and to contact the portion of the blank to be trimmed. Discharge the capacitor across the electrodes to generate a pressure pulse that pushes the portion of the blank to be trimmed against the cutting edge thus trimming it off the blank.
REFERENCES:
patent: 3232086 (1966-02-01), Inoue
patent: 3248917 (1966-05-01), Herring, Jr.
patent: 3253442 (1966-05-01), Glove, Jr. et al.
patent: 3267780 (1966-08-01), Roth
patent: 3394569 (1968-07-01), Smith
patent: 3416128 (1968-12-01), Allen
patent: 3423979 (1969-01-01), Smith et al.
patent: 3486062 (1969-12-01), Schrom
patent: 3491564 (1970-01-01), Hundley et al.
patent: 3495486 (1970-02-01), Fuchs, Jr.
patent: 3512384 (1970-05-01), Inoue
patent: 3553434 (1971-01-01), Murray
patent: 3559435 (1971-02-01), Gerber
patent: 2566647 (1971-03-01), Inoue
patent: 3566645 (1971-03-01), Lemelson
patent: 3572072 (1971-03-01), Hundley et al.
patent: 3575631 (1971-04-01), Pratt
patent: 3591760 (1971-07-01), Inoue
patent: 3593551 (1971-07-01), Roth
patent: 3603127 (1971-09-01), Seiffert et al.
patent: 3611765 (1971-10-01), Harvey
patent: 3631699 (1972-01-01), Roth
patent: 3640110 (1972-02-01), Inoue
patent: 3678577 (1972-07-01), Weglin et al.
patent: 3742746 (1973-07-01), Erlandson
patent: 3786662 (1974-01-01), Roth
patent: 3814892 (1974-06-01), Inoue
patent: 3894925 (1975-07-01), Inoue
patent: 4030329 (1977-06-01), Chachin et al.
patent: 4942750 (1990-07-01), Conaway
patent: 5445001 (1995-08-01), Snavely
patent: 5911844 (1999-06-01), Benedyk
patent: 5948185 (1999-09-01), Krajewski et al.
patent: 6033499 (2000-03-01), Mitra
patent: 6094809 (2000-08-01), Grassi
patent: 6178796 (2001-01-01), Hellgren
patent: 6215734 (2001-04-01), Moeny et al.
patent: 6227023 (2001-05-01), Daehn et al.
patent: 6349467 (2002-02-01), Karafillis et al.
patent: 6519992 (2003-02-01), Schnupp
patent: 6591649 (2003-07-01), Gafri et al.
patent: 6615631 (2003-09-01), Kleber et al.
patent: 6708542 (2004-03-01), Gafri et al.
patent: 6751994 (2004-06-01), Horton et al.
patent: 6947809 (2005-09-01), Ren et al.
patent: 7130708 (2006-10-01), Wang et al.
patent: 7155948 (2007-01-01), Hellgren
patent: 7165429 (2007-01-01), Steingroever
patent: 7240532 (2007-07-01), Zhang et al.
patent: 7266982 (2007-09-01), Guza
patent: 7493787 (2009-02-01), Golovashchenko et al.
patent: 2005/0113722 (2005-05-01), Schultheiss
patent: 2005/0199032 (2005-09-01), Krajewski
patent: 2006/0201229 (2006-09-01), Zhu et al.
patent: 1068440 (1967-05-01), None
patent: 1095276 (1967-12-01), None
patent: 1165902 (1969-10-01), None
patent: 1241343 (1971-08-01), None
patent: 1244922 (1971-09-01), None
patent: 1250901 (1971-10-01), None
patent: 1252997 (1971-11-01), None
patent: 1262072 (1972-02-01), None
patent: 1294240 (1972-10-01), None
patent: 2158644 (2000-11-01), None
“Optimization of Initial Blank Shape Predicted Based on Inverse Finite Elelment Method”, Science Direct, Finite Elements in Analysis and Design 43 (2007), pp. 218-233.
“General Motors' Quick Plastic Forming Process”, James G. Schroth, TMS (The Minerals, Metals & Materials Society), 2004, pp. 9-20.
FY 2005 Progress Report, Automotive Lightweighting Materials, pp. 136-140.
“Demonstration of the Preform Anneal Process to Form a One-Piece Aluminum Door Inner Panel”, Lee et al., SAE Technical Paper Series, No. 2006-01-0987, 2006 SAE World Congress, Detroit, MI, Apr. 3-6, 2006.
“Retrogression Heat Treatments in AA6111” Paul E. Krajewski, General Motors R&D Center, Materials and Processing Laboratory, Oct. 23, 2002.
“Metal Forming with Capacitor Discharge Electro-Spark”, E.C. Schrom, Paper SP62-80, published in Advanced High Energy Rate forming. Book II, ASTME, 1962.
“Research in Electric Discharge Forming Metals”, R.L. Kegg et al., Paper SP62-78, published in Advanced High Energy Rate Forming, Book II, ASTME, 1962.
“Formability of Sheet Metal with Pulsed Electromagnetic and Electrohydraulic Technologies”, S.F. Golovashchenko, et al., Proceedings of TMS Symposium “Aluminum-2003”, San Diego, CA 2003.
“The Effect of Tool/Sheet Interaction in Damage Evolution of Electromagnetic Forming of Aluminum Alloy Sheet”, J. Imbert et al, Transactions ASME, Journal of Engineering Materials and Technology, Jan. 2005, vol. 127, pp. 145-153.
“Equipment and Technological Processes with the Employment of Electrohydraulic Effect” G.A. Guliy, et al., Moscow: Mechanical Engineering, 1977.
“Electrohydraulic Effect and Some Potential Applications”, L.A. Yutkin, St. Petersburg, 1959.
Concurred: Project Leader of MSTC Project N 1593—Mar. 31, 2003 “Technical Report on Scientific Research Project: Development of the Technology of Static-Electrohydropulsed Drawing on the Punch of Parts of Boxed Shape”, Town of Sarov, 2003.
“Heat Treating, Cleaning and Finishing”, Metals Handbook, 8th Ed., vol. 2, Amer.Soc.for Metals, pp. 277-278, printed 1976.
“Plants That Have Tough Metals and Large Parts To Form Watch Cautiously As . . . High Velocity Takes Off Again”, J. E. Sanford, Iron Age Technical Features, Mar. 4, 1969, vol. 203, pp. 91-95.
Brooks & Kushman P.C.
Coppiellie Raymond L.
ford Global Technologies, LLC
Jones David B
LandOfFree
Electrohydraulic trimming, flanging, and hemming of blanks does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrohydraulic trimming, flanging, and hemming of blanks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrohydraulic trimming, flanging, and hemming of blanks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4173789