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Machine translation
1. (WO1980000667) METHOD FOR PRODUCING BY REPOUSSE WORK OF A METAL SHEET BENT PIPE,WITH A THIN WALL AND WITHOUT A JOINT BEAD,SPECIFIC RADIUS OF CURVATURE,OPENING ANGLE AND PIPE DIAMETER,WITH OR WITHOUT TERMINAL CYLINDRICAL ENDS,FROM A THICK WALL TUBULAR BLANK,AND MACHINE FOR IMPLEMENTING SUCH METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000667    International Application No.:    PCT/CH1979/000116
Publication Date: 17.04.1980 International Filing Date: 03.09.1979
IPC:
B21C 37/28 (2006.01), B21D 22/16 (2006.01)
Applicants:
Inventors:
Priority Data:
10543/78 11.10.1978 CH
Title (EN) METHOD FOR PRODUCING BY REPOUSSE WORK OF A METAL SHEET BENT PIPE,WITH A THIN WALL AND WITHOUT A JOINT BEAD,SPECIFIC RADIUS OF CURVATURE,OPENING ANGLE AND PIPE DIAMETER,WITH OR WITHOUT TERMINAL CYLINDRICAL ENDS,FROM A THICK WALL TUBULAR BLANK,AND MACHINE FOR IMPLEMENTING SUCH METHOD
(FR) PROCEDE DE FABRICATION PAR REPOUSSAGE D"UN TUYAU COUDE EN TOLE, A PAROI MINCE ET SANS CORDON DE RACCORD, A RAYON DE COURBURE, ANGLE D"OUVERTURE ET DIAMETRE DU TUYAU DETERMINES, AVEC OU SANS EMBOUTS CYLINDRIQUES TERMINAUX, A PARTIR D"UNE EBAUCHE TUBULAIRE A PAROI EPAISSE, ET MACHINE POUR LA MISE EN OEUVRE DU PROCEDE
Abstract: front page image
(EN)Method and machine for implementing such method for producing by repousse work a sheet metal elbow pipe having a thin wall, with no welding bead and no bending line, with specific radius of curvature, angle of opening and diameter of the pipe, from a thick wall short tubular blank. The blank (25) is positioned on an arcuated core (24) corresponding to the desired radius of curvature, between the press rollers (15) mutually adjustable and radially arranged on a head (4). The core (24) pivots according to the desired radius of the arc without rotating on itself, to allow the lamination of the blank (25) by rotation of the rollers (15) about the piece to be machined to form the angle of bent pipe (33) to the desired length, with a thickness of the wall comprised between 0.2 and 1.5 mm approximately.
(FR)Procede et machine pour la mise en oeuvre du procede pour la fabrication par repoussage d"un tuyau coude en tole, a paroi mince, sans cordon de soudure ni ligne de pliage, a rayon de courbure, angle d"ouverture et diametre du tuyau determines, a partir d"une ebauche tubulaire courte et a paroi epaisse. L"ebauche (25) est placee sur un noyau arque (24) correspondant au rayon de courbure voulu, entre des rouleaux presseurs (15) reciproquement reglables et disposes radialement sur une tete (4). Le noyau (24) pivote selon le rayon de l"arc voulu sans tourner sur lui-meme, pour permettre le laminage de l"ebauche (25) par rotation des rouleaux (15) autour de la piece a usiner pour former le tuyau coude (33) a la longueur voulue, avec une epaisseur de paroi comprise entre environ 0,2 et 1,5 mm.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)