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Machine translation
1. (WO1981002535) A METHOD OF BENDING SHAPED METAL SHEET AND APPARATUS FOR CARRYING OUT THE METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002535    International Application No.:    PCT/SE1981/000054
Publication Date: 17.09.1981 International Filing Date: 02.03.1981
IPC:
B21D 11/08 (2006.01), B21D 11/20 (2006.01)
Applicants:
Inventors:
Priority Data:
8001670 04.03.1980 SE
Title (EN) A METHOD OF BENDING SHAPED METAL SHEET AND APPARATUS FOR CARRYING OUT THE METHOD
(FR) PROCEDE DE PLIAGE DE FEUILLES METALLIQUES FACONNEES ET DISPOSITIF DE MISE EN OEUVRE DU PROCEDE
Abstract: front page image
(EN)Bending of shaped sheet metal, which shows alternatingly occuring longitudinal ridges and valleys, the lateral portions of which constitute lateral portions of the ridges, about an axis, which extends perpendicularly to the longitudinal direction of the ridges and valleys and is in parallel with the plane of the sheet. Known methods of bending such shaped sheet metal have proved to have certain limitations with respect to applicability and smallest bending radius to be obtained in one or more coherent bending moments or steps. For eliminating these shortcomings a method of bending shaped sheet metal is proposed, in which the bending takes place in at least subsequent moments or steps. At the first bending moment transverse ridges are formed from below along at least one line in parallel with said axis in the valleys for partially bending the sheet (A), an at the second bending moment transverse ridges are formed from below on both sides of the transverse ridges formed at the first bending moment, for finally bending the sheet (A) to the desired bending angle.
(FR)Pliage de feuilles metalliques faconnees, presentant des sommets et des creux longitudinaux alternes, dont les parties laterales constituent des parties laterales des cretes, le long d"un axe, s"etendant perpendiculairement a la direction longitudinale des cretes et des creux et paralleles au plan de la feuille. Les procedes connus de pliage de telles feuilles metalliques faconnees ont presente certaines limitations par rapport a leurs possibilites d"application et au plus petit rayon de pliage pouvant etre obtenu lors d"un ou plusieurs moments ou etapes de pliage coherent. Afin d"eliminer ces inconvenients un procede de pliage de feuilles metalliques faconnees est propose, dans lequel le pliage a lieu dans au moins deux moments ou etapes consecutives. Lors de la premiere etape de pliage des cretes transversales sont formees par le bas le long d"au moins une ligne parallelement audit axe dans les creux de maniere a plier partiellement la feuille (A), et lors de la deuxieme etape de pliage des cretes transversales sont formees par le bas sur les deux cotes des cretes transversales formees lors de la premiere etape de pliage, de maniere a plier definitivement la feuille (A) selon l"angle de pliage desire.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)