Hemming machine and method

Details Hemming machine and method Hemming machine and method

1991-06-28

1992-09-29

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

29511, 292435, B21D 3902, B23P 1100

Patent

active

051505088

ABSTRACT:
This invention relates to a machine and a method for forming a unitary structure from a first steel panel having an upturned flange and a second steel panel having a flat edge portion. The machine is comprised of a support surface for receiving the two panels in a nested relation. The support surface, holding the nested panels, is moved to a pre-hem position. The support surface then presses the flange of the first panel against a pre-hem flange engaging member to bend the flange to approximately 45.degree. with respect to the plane of the first panel. The support surface moves the nested panels to a final hem position. The support surface then presses the flange against a final hem engaging member to bend the flange into full engagement with the edge portion of the second panel to form a unitary structure.

REFERENCES:
patent: 3598073 (1971-08-01), St. Denis
patent: 4455728 (1984-06-01), Hesse
patent: 4891964 (1990-01-01), Hallstron

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