Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Plural or complex apparatus
Patent
1987-12-28
1989-08-15
Crane, Daneil C.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Plural or complex apparatus
72322, 72446, B21D 504
Patent
active
048563153
ABSTRACT:
The bending machine for the production of rectangular sheet metal panels includes a vertically traversing blank holder which is formed of a plurality of blank-holding elements, two end elements and two spacers, a fixed counterblade, two opposing blades fixed to a vertically traversing C support and structure for positioning the metal sheet to be bent on the counterblade. There are provided on the machine programming elements traversing along the blankholder to vary the side extension of said blankholder according to the dimensions of the metal sheet to be bent. There is also provided the possibility of expanding and contracting the blankholder sidewise at the beginning and at the end respectively of the bending operation of a long side of the metal sheet.
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patent: 4532792 (1985-08-01), Hongo
patent: 4658625 (1987-04-01), Koyama et al.
patent: 4722214 (1988-02-01), Hayashi et al.
Crane Daneil C.
Salvagnini Transferica S.p.A.
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