Process and device for correcting dynamic misalignments in...

B - Operations – Transporting – 23 – Q

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B23Q 15/007 (2006.01) B23Q 5/54 (2006.01) B23Q 11/00 (2006.01) B23Q 15/18 (2006.01) B23Q 17/22 (2006.01) F16F 15/02 (2006.01) G05B 19/402 (2006.01)

Patent

CA 2248271

The aim of the process and associated device is a substantially more accurate correction of dynamic misalignments caused unavoidably by vibrations in the machine than is possible with known processes. In the process, the disturbances which directly determine the misalignments at the point of action between tool and workpiece are determined. A mathematical process model is generated from the disturbances and used to generate the non-statistical components of the disturbances. On the basis of the process model, a preliminary estimate is formulated of the future behaviour of the disturbance at the point of action and this is then used to correct the misalignment. The process can be used with machine tools to improve surface finish.

L'invention concerne un procédé et un dispositif associé permettant de compenser des décalages dynamiques provoqués inévitablement par des vibrations dans la machine, de façon sensiblement plus précise qu'avec les procédés connus. Ce procédé consiste à déterminer les perturbations conditionnant directement les décalages au niveau de leur point d'action entre l'outil et la pièce, à générer, à partir de ces perturbations, un modèle de processus mathématique sur la base duquel les composantes non statistiques des perturbations sont générées. Une pré-estimation du comportement futur des perturbations apparaissant au point d'action est effectuée sur la base du modèle de processus mathématique et la compensation du décalage est commandée en fonction de ce comportement futur des perturbations. Ce procédé peut être appliqué sur des machines-outils pour améliorer la qualité de surface.

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