Method and device for producing workpieces with a...

B - Operations – Transporting – 23 – Q

Patent

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B23Q 27/00 (2006.01)

Patent

CA 2258763

The invention concerns a method and device for producing workpieces with a non- circular internal and/or external shape on a machine holding at least one workpiece (8) driven to rotate at constant speed and at least one tool (5), in particular a machining tool, movend by means of a carriage (3) both radially to the axis of rotation (2) of the workpieces and longitudinally along this axis (2). In order to provide a method which enables workpieces with widely different internal and/or external shapes to be produced on commercially available equipment, the tool (5) is driven to rotate so that its cutting surface describes a circular path, at a constant speed which differs in magnitude and direction from the rotational speed of the workpiece (8), about an axis (6) which differs from the axis of rotation (2) of the workpiece.

L'invention concerne un procédé et un dispositif permettant de réaliser des contours intérieurs et/ou extérieurs déviant de la forme circulaire sur une machine où se trouvent maintenus par serrage au moins une pièce (8) entraînée en rotation à vitesse constante et au moins un outil (5), notamment pour un usinage par enlèvement de copeaux, ledit outil pouvant être déplacé à l'aide d'un chariot (3) aussi bien dans le sens radial par rapport à l'axe de rotation (2) de la pièce que dans le sens axial, c'est-à-dire dans le sens longitudinal dudit axe de rotation (2). Afin qu'un procédé permette de réaliser différents contours intérieurs et/ou extérieurs sur des dispositifs disponibles dans le commerce, l'outil (5) est entraîné en rotation autour d'un axe de l'outil (6), au niveau de sa surface active, sur une trajectoire circulaire, à une vitesse constante s'écartant de la vitesse de rotation de l'outil (8) en termes de grandeur et/ou de sens de rotation.

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