Driver plate for electromagnetic forming of sheet metal

Details Driver plate for electromagnetic forming of sheet metal Driver plate for electromagnetic forming of sheet metal

2011-06-07

2011-06-07

Ekiert, Teresa M (Department: 3725)

Metal deforming

Tool and/or tool holder

Including flexible or yieldable tool or support

C072S054000

Reexamination Certificate

active

07954357

ABSTRACT:
A multi-layer driver plate is disclosed for use in electromagnetic sheet metal forming operations. In one embodiment, the driver plate comprises a first layer characterized by low electrical resistivity and thickness for inducement and application of a suitable electromagnetic forming force, a second layer comprising an elastomeric material for compressing a sheet metal workpiece against a die surface and then regaining its original pre-forming structure, and a third layer interposed between the first layer and the second layer to protect the EMF force providing layer and to provide overall strength and durability to the EMF driver plate.

REFERENCES:
patent: 3618350 (1971-11-01), Larrimer, Jr. et al.
patent: 7069756 (2006-07-01), Daehn
patent: 7076981 (2006-07-01), Bradley et al.
patent: 7550189 (2009-06-01), McKnight et al.
W.H. Larrimer, Jr. and D.L. Duncan, “Transpactor-A Reusable Electromagnetic Forming Tool . . . ”, Technical Paper, 1973, pp. 1-14, Society of Manufacturing Engineers, Dearborn, MI.

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