Method and means for processing metal sheets

Details Method and means for processing metal sheets Method and means for processing metal sheets

1978-11-03

1980-07-08

Mehr, Milton S.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

With work-distorting clamp

72312, 72351, 72378, B21D 2200

Patent

active

042111021

ABSTRACT:
Method of processing metal sheets which includes the steps of applying tensile stress to an intermediate region of a sheet of metal by engaging the sheet on opposite sides of the region, deforming the intermediate region of the sheet and removing the tensile stress applied to the sheet. The intermediate region of the sheet may be deformed by embossing and the tensile stress can be applied to the intermediate region of the sheet by forming a bead on opposite sides of the region. The means for processing metal sheets comprises first means including die members for forming beads on opposite sides of a metal sheet, and second means for deforming the intermediate region of the sheet while the stress is applied thereto by the first means.

REFERENCES:
patent: 1923334 (1933-08-01), Spatta
patent: 2064160 (1936-12-01), Hochreiter et al.
patent: 2350884 (1944-06-01), Ernst
patent: 2485354 (1949-10-01), Brennan
patent: 3990288 (1975-07-01), Mackenzie

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