Patent ID: 7290318
Filing Date: 2007-11-06
Classification: B21D,Y10T

Abstract:
1. A method of applying electromagnetic force (EMF) for hemming together edges of at least two metal panels to form an edge hemmed panel assembly, the method comprising: holding at least first and second metal panels with faces aligned in mated face engagement, the first panel having a flange bent at an angle generally perpendicular to the mated face of the first panel across and beyond an edge face of the second panel; positioning an EMF hemming coil closely opposite an outer face of the bent flange; and energizing the coil to generate eddy currents in the flange that form opposing magnetic fields between the coil and the flange and apply a force that bends the flange against and generally parallel to the mated face of the second panel to form a finished hem of the first panel around the edge face of the second panel.