Hybrid methods of metal forming using electromagnetic forming

• US 6,050,121 A
• Filed: 08/17/1998
• Issued: 04/18/2000
• Est. Priority Date: 08/17/1998
• Status: Expired due to Term

• Current Assignee: Ohio State University
• Original Assignee: Ohio State University
• Inventors: Daehn, Glenn S., Vohnout, Vincent J.
• Primary Examiner(s): JONES, DAVID B
• Application Number:
  US09/135,538
• Time in Patent Office: 610 Days
• Field of Search: 72/54, 72/56, 72/57, 72/60, 72/430, 72/707
• US Class Current: 72/57
• CPC Class Codes: B21D 1/06 Removing local distortions
• CPC Class Codes: B21D 22/02 Stamping using rigid devices or tools
• CPC Class Codes: B21D 26/14 applying magnetic forces
• CPC Class Codes: B30B 1/42 by magnetic means, e.g. electromagnetic
• CPC Class Codes: Y10S 72/707 Magnetism

Abstract

The present invention includes a method of forming a metal work piece into a target shape, said method comprising the steps: (a) obtaining a metal work piece, said work piece having an original shape; and (b)forming said metal work piece by mechanical action while simultaneously subjecting said work piece to electromagnetic forming, so as to deform said metal work piece from said original shape to said target shape. The present invention includes a method of forming a metal work piece into a target shape, the method comprising the steps: (a) obtaining a metal work piece, the work piece having an original shape; (b) disposing the metal work piece in a mold comprising an electronic actuator, the mold comprising: (i) an male mold portion having a mold side and a back side; (ii) a female mold portion having a mold side and a back side; the mold side of the male mold portion and the mold side of the female mold portion adapted to mate so as to deform a work piece disposed therebetween; (iii) at least one of the mold portions comprising at least one electromagnetic actuator; and (iv) a current power source adapted to produce a current pulse through the at least one electromagnetic actuator, so as to produce a magnetic field so as to be capable of deforming the work piece; (c) closing the mold sides upon the metal work piece while causing at least one current pulse to pass through the actuator, so as to deform the metal work piece from the original shape to the target shape. Preferably, the at least one current pulse comprises a series of current pulses.

Claims

1. A method of forming a metal work piece into a target shape, said method comprising the steps:

(a) obtaining a metal work piece, said work piece having an original shape;

(b) disposing said metal work piece in a mold comprising at least one electromagnetic actuator, said mold comprising;

(i) a male mold portion having a mold side and a back side;

(ii) a female mold portion having a mold side and a back side;

said mold side of said male mold portion and said mold side of said female mold portion adapted to mate so as to deform a work piece disposed therebetween;

(iii) at least one of said mold portions comprising said at least one electromagnetic actuator; and

(iv) a current power source adapted to produce a current pulse through said at least one electromagnetic actuator, so as to produce a magnetic field so as to be capable of deforming said work piece;

(c) closing said mold sides upon said metal work piece while causing at least one current pulse to pass through said at least one electromagnetic actuator, so as to deform said metal work piece from said original shape to said target shape.

2. A method according to claim 1 wherein said at least one current pulse comprises a series of current pulses.

3. A method of forming a metal work piece into a target shape, said method comprising the steps:

(a) obtaining a metal work piece, said work piece having an original shape; and

(b) forming said metal work piece by mechanical action while simultaneously subjecting said work piece to electromagnetic forming, so as to deform said metal work piece from said original shape to said target shape.