Method and device for measuring the position and/or...

G - Physics – 05 – B

Patent

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G05B 19/404 (2006.01) G01B 11/14 (2006.01)

Patent

CA 2311525

The invention relates to a method for measuring the position and/or orientation of interacting machine units in measuring machines, handling devices or especially tools, spindles and workpieces in machine tools. At least one machine unit can move in relation to another and at least the positions of the machine units can be corrected. The invention is characterised in that each machine unit comprises sensors which measure at least two variables (distance, angle, orientation) or a variation thereof, and the planar or spatial position and/or orientation of said machine units in relation to each other or in relation to a common reference system or different reference systems is measured simultaneously or substantially simultaneously, continuously or at regular intervals that are as short as possible, independently of the drive axes of said machine units and without placing the sensors or machine units in a special measuring position.

L'invention concerne un procédé qui permet de mesurer la position et/ou l'orientation des différents éléments constitutifs des machines de mesure, des dispositifs manipulateurs et notamment des outils, des arbres et des pièces de machines-outils, dans lesquels au moins un élément peut se déplacer par rapport à un autre et la position des éléments peut éventuellement être corrigée. Chaque élément comporte des capteurs qui mesurent au moins deux grandeurs (distance, angle, orientation) ou leurs variations. La position et/ou l'orientation dans un plan ou dans l'espace des éléments les uns par rapport aux autres, des éléments par rapport à un système de coordonnées commun ou des éléments par rapport à différents systèmes de coordonnées, sont mesurées simultanément ou sensiblement simultanément, en continu ou à des intervalles réguliers les plus courts possible, indépendamment des axes d'entraînement des éléments et sans mettre les capteurs ou les éléments dans une position de mesure particulière.

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