PERFECCIONAMIENTOS INTRODUCIDOS EN UNA MAQUINA PARA FORMAR FUELLES A PARTIR DE UNA PIEZA ELEMENTAL METALICA, FLEXIBLE, TUBULAR Y ALARGADA.

摘要

In bellows forming with internal and external forming rolls, the external forming roll is rigidly supported, as each convolution is formed in a blank, to permit accurate control of each convolution. The blank is indexed independently of the convolutions.