Wheels of unitary construction and method of making same

Details Wheels of unitary construction and method of making same Wheels of unitary construction and method of making same

B - Operations, Transporting

21

H

B21H 1/02 (2006.01) B21H 1/04 (2006.01)

Patent

CA 2552927

This invention relates to a unitary steel wheel as well as an apparatus and method for producing a unitary steel wheel. The unitary wheel comprises rim and disc components. In one embodiment, the unitary wheel further comprises approximately a 50 taper bead-seat for flat or semi-drop cantar rims, produced from a generally circular steel blank. The blank preferably has a cantar hole of predeter.mined size. In a first step, the blank is initially placed in a spinning machina to form disk and rim portlons of a predetermined profila and shape. The preform is further spun and flow formed in the spinning machlne, to form a gutter, well, bead-Seat, and/or fixed flange. The preform is then forward and reverse spun to form the final profila and shape of the gutter, wall, bead-seat, and/or fixed flange.

La présente invention concerne une jante en acier monobloc ainsi qu'un appareil et un procédé destinés à la production d'une jante en acier monobloc. Cette jante monobloc comprend une partie de jante et une partie de disque. Dans un mode de réalisation, la jante monobloc comprend également un repos de talon à conicité 50 approximativement pour des jantes à base plane ou demi-creuse, produites à partir d'une ébauche d'acier globalement circulaire. L'ébauche comporte de préférence un orifice central de largeur prédéterminée. Dans une première étape, l'ébauche est placée initialement dans une machine à repousser pour former la partie de jante et la partie de disque avec un profil et une forme prédéterminés. La préforme est davantage repoussée et fluotournée dans la machine à repousser, pour former une goulotte, une paroi, un repos de talon et/ou un bord de jante fixe.

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