Electromagnetic flanging and hemming apparatus and method

Details Electromagnetic flanging and hemming apparatus and method Electromagnetic flanging and hemming apparatus and method

2007-11-06

2007-11-06

Bryant, David P. (Department: 3726)

Metal working

Method of mechanical manufacture

Magnetically shaping

C029S505000

Reexamination Certificate

active

10929207

ABSTRACT:
Apparatus and methods are disclosed for applying electromagnetic force (EMF) to flanging and hemming metal panels to form a hemmed panel assembly. First and second apparatus and method steps use a translating EMF coil to flange a sheet and to finish a hem by progressive non-planar bending. An alternate embodiment uses EMF hemming for difficult-to-hem portions of a flange and optionally precedes this with conventional hemming of straight hem portions.

REFERENCES:
patent: 4602139 (1986-07-01), Hutton et al.
patent: 6138355 (2000-10-01), Grassi
patent: 6365883 (2002-04-01), Pohl
patent: 6523244 (2003-02-01), Bissonnette
patent: 6523277 (2003-02-01), Bissonnette
patent: 6927370 (2005-08-01), McClure et al.
patent: 6968718 (2005-11-01), Imamura

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