Apparatus and method for manufacturing hollow shafts

Details Apparatus and method for manufacturing hollow shafts Apparatus and method for manufacturing hollow shafts

B - Operations, Transporting

21

D

B21D 5/12 (2006.01) B21C 37/08 (2006.01) B21C 37/18 (2006.01) B23K 11/02 (2006.01)

Patent

CA 2413346

An apparatus and method for welding a shaft having an open seam defined between opposed longitudinal edges. The method comprising passing the shaft along its longitudinal axis through an array of pressure rollers which contact the surface of the shaft at a plurality of discrete points and compress the shaft by applying inwardly directed radial forces to the shaft. An electrical resistance welding assembly welds the seam while closed by the pressure rollers.

La présente invention concerne un procédé et un appareil de soudage d'un arbre présentant une ligne ouverte formée entre les bords longitudinaux opposés. Ce procédé consiste d'abord à faire passer l'arbre, le long de son axe longitudinal, par un ensemble de rouleaux de pression qui touchent la surface de l'arbre en une pluralité de points distincts, et à compresser ensuite l'arbre en exerçant sur lui des forces radiales dirigées vers l'intérieur. Un ensemble de soudage à résistance électrique exécute la soudure de la ligne, laquelle est fermée sous l'action des rouleaux de pression.

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