Method and forming machine for working a workpiece

Details Method and forming machine for working a workpiece Method and forming machine for working a workpiece

B - Operations, Transporting

21

D

B21D 22/14 (2006.01)

Patent

CA 2479090

The invention relates to a method and a forming machine for working a workpiece (13), for example by deforming it or fixing it in another workpiece, in which the workpiece is fitted over a mandrel (17), at least a part of the mandrel is expanded so as to fix the workpiece, the workpiece and at least one tool, such as a forming roller, are rotated about an axis relative to each other and the workpiece (11) is worked by means of said tool. Less than half of the expanded or expandable part of the mandrel engages portions of the workpiece that are being worked with the tool.

L'invention concerne un procédé et une machine à former permettant de travailler une pièce (13), par exemple par déformation de cette pièce ou fixation de cette dernière dans une autre pièce. Selon ce procédé, la pièce est ajustée sur un mandrin (17), au moins une partie du mandrin est allongée de façon à fixer la pièce, la pièce et au moins un outil tel qu'un rouleau à former sont pivotés autour d'un axe l'un par rapport à l'autre, et la pièce (11) est travaillée au moyen de cet outil. Moins de la moitié de la partie allongée ou pouvant être allongée du mandrin se met en prise avec des parties de la pièce étant travaillées avec l'outil.

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