Clamping fixture including a chuck for releasably locating a...

B - Operations – Transporting – 23 – Q

Patent

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Details

B23Q 3/06 (2006.01) B23B 31/10 (2006.01) B23Q 16/00 (2006.01)

Patent

CA 2639810

The clamping fixture features a chuck (1) provided with a locking mechanism (2) for releasably locating a workpiece pallet (33). The locking mechanism (2) comprises a plurality of clamping members (5) which in the locked position are engineered to engage a clamping spigot (30) connected the workpiece pallet. Each clamping member (5) is provided with a feedthru drilling (8, 8a) which on correct locking and/or release of the corresponding clamping members (5) is closed off at one end. Additionally, or alternatively, each clamping member (5) is assigned an actuating member(10) provided with a feedthru drilling (12) which on correct locking and/or release of the corresponding clamping members (5) is closed off at one end. The feedthru drillings (8, 8a, 12) of the clamping members (5) and actuating members (10) respectively are connectable by a common connecting conduit to a compressed air source. In addition, at least one sensor is provided for sensing air flow in the connecting conduit. By means of the sensor it can detected whether the clamping members (5) are correctly released or locked.

Dispositif de serrage comportant un mandrin (1) doté d'un mécanisme de fixation (2) pour fixer ou libérer une plaque à usiner (33). Le mécanisme de fixation (2) comprend une pluralité d'éléments de serrage (5) qui, lorsqu'en position de fixation, servent à enclencher un dispositif de serrage (30) sur la plaque à usiner. Chaque élément de serrage (5) est traversé d'un orifice (8, 8a) qui, lorsqu'en position de fixation et/ou de libération des éléments de serrage correspondants (5), est fermé à une extrémité. De plus, chaque élément de serrage (5) est associé à un élément d'actionnement (10) traversé d'un orifice (12) qui, lorsqu'en position de fixation et/ou de libération des éléments de serrage correspondants (5), est fermé à une extrémité. Les orifices (8, 8a, 12) des éléments de serrage (5) et des éléments d'actionnement (10) peuvent respectivement être reliés par un conduit commun à une source d'air comprimé. De plus, au moins un capteur est fourni pour détecter la circulation d'air dans le conduit. Les capteurs permettent de vérifier si les éléments de serrage (5) sont correctement libérés ou fixés.

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