Apparatus and method for joining sheet metal layers

Details Apparatus and method for joining sheet metal layers Apparatus and method for joining sheet metal layers

1997-09-15

2000-04-25

Hughes, S. Thomas

Metal working

Method of mechanical manufacture

Assembling or joining

292435, 29505, 72313, 72 57, B23P 1100

Patent

active

060528877

ABSTRACT:
A method for joining together two superimposed sheet metal layers includes clamping the sheet metal layers together on a base and positioning a resiliently deformable hemming bead adjacent the superimposed layers. One of the layers includes an outer peripheral flange that extends beyond the outer peripheral edge of the other layer. An anvil has a lower face that follows the bead around the periphery of the superimposed layers and presses against the bead to deform the bead toward the flange. Deformation of the hemming bead causes the peripheral flange of the one layer to bend around the peripheral edge of the other layer in a single operation to thereby join the superimposed sheet metal layers together.

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