Method and forming machine for deforming a hollow workpiece

Details Method and forming machine for deforming a hollow workpiece Method and forming machine for deforming a hollow workpiece

B - Operations, Transporting

21

D

B21D 22/14 (2006.01)

Patent

CA 2415936

The invention relates to a method and a forming apparatus (1) for deforming a hollow workpiece (5) having at least one open end, wherein the workpiece (5) is clamped down in a clamping device (4, 60, 66), a first forming tool (13) is placed into contact with the outer surface of the workpiece (5), said workpiece (5) and said tool (13) are rotated about an axis of rotation (17) relative to each other and said workpiece (5) is deformed by means of said first tool (13). A second forming tool (19) is placed into the cavity defined by the workpiece (5) and into contact with the inner surface of the hollow workpiece (5), after which the workpiece (5) is deformed by means of said second tool (19).

L'invention concerne un procédé et un appareil à former (1) destinés à déformer une pièce à travailler creuse (5) possédant au moins une extrémité ouverte. Cette pièce à travailler (5) est immobilisée dans un dispositif de serrage (4, 60, 66), un premier outil à former (13) est mis en contact avec la surface extérieure de la pièce à travailler (5), ladite pièce (5) et ledit outil (13) sont mis en rotation, autour d'un axe de rotation (17), l'un par rapport à l'autre, la pièce à travailler (5) étant déformée au moyen de cet outil (13). Un second outil à former (19) est placé dans la cavité définie par la pièce à travailler (5) et mis en contact avec la surface intérieure de la pièce à travailler creuse (5), après quoi, la pièce à travailler (5) est déformée au moyen de ce second outil (19).

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