Device for drawing sheet materials in particular sheet blanks

Details Device for drawing sheet materials in particular sheet blanks Device for drawing sheet materials in particular sheet blanks

1991-12-18

1993-10-26

Jones, David

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

72 63, 72465, 294211, B21D 2600

Patent

active

052555500

ABSTRACT:
A device is provided for drawing sheet materials, in particular, sheet blanks. The device includes a cushion of elastic material disposed in an enclosure, a die for forming the sheet blank, the die having a peripheral portion constituting an upper blank holder. The device also includes a lower blank holder for supporting and maintaining at least a portion of the sheet blank which is placed directly on the cushion of elastic material and cooperates with the upper blank holder for clamping the sheet blank in at least localized zones. The lower blank holder bears against a slidable element disposed around lateral faces of the cushion.

REFERENCES:
patent: 2342858 (1944-02-01), Hansen
patent: 2761405 (1956-09-01), Moller
patent: 2796253 (1957-06-01), Schulze et al.
patent: 3382690 (1968-05-01), Achler et al.
patent: 4770015 (1988-09-01), De Smet
patent: 4833903 (1909-05-01), de Smet
patent: 5016458 (1991-05-01), De Smet
patent: 5067336 (1991-11-01), de Smet
patent: 5081859 (1992-01-01), DeSmet

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