Coupling for a detachable fixing of components at...

B - Operations – Transporting – 23 – Q

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82/16, 29/19

B23Q 3/157 (2006.01) B23B 29/04 (2006.01) B23B 31/02 (2006.01) B23B 31/06 (2006.01) B23C 5/26 (2006.01) B23Q 3/12 (2006.01)

Patent

CA 2026442

A coupling for a detachable, torsionally and axially rigid fixing of parts, in particular of tool components, at corresponding carrier members, such as a tool base receiver or basic holder. At the carrier member a receiver for a conical or cylindrical centering extension of the part is provided. A chuck member can be actuated by a set screw from the exterior of the part so as to force the two members against each other through a support ring surface pairing. In order to provide an easy handling, a favourable application of force between the parts and a compatibility with already existing coupling systems having a centrally disposed drawbar, the chuck member comprises three clamp-like chuck claws positioned a circumferential distance with respect to each other which are disposed or arranged each in an axial plane of the coupling. The chuck claws are supported by an anchor portion at a shoulder in the receiver and are movable into an undercut interior recess with a radially outwardly projecting clamping portion. To this effect, the set screw is screwed into one of the chuck claws so that it fits with its radially internal thrust head uniformly against the contacting portions of the two other chuck claws.

Est décrit un accouplement pour la fixation amovible solidaire en rotation et axialement de pièces, notamment de composants d'outillage, à des parties de support correspondantes telles qu'un raccordement de base d'outil. Un raccordement destiné à un prolongement de centrage conique ou cylindrique de la pièce est prévu sur la partie de support. Les deux parties sont pressées l'une contre l'autre au niveau d'une paire de surfaces annulaires de support par un dispositif de serrage actionné depuis l'extérieur de la pièce au moyen d'une vis de réglage. Afin d'assurer un fonctionnement aisé, une chaîne cinématique avantageuse entre les pièces et une compatibilité avec des systèmes d'accouplement existants pourvus d'une biellette centrale, le dispositif de serrage comprend trois griffes de serrage en forme de crampon, disposées à distance circonférentielle les unes des autres, chacune se trouvant dans un plan axial de l'accouplement. Les griffes de serrage comprennent une section d'ancrage qui vient buter contre un épaulement ménagé dans le raccordement, et comportent une section de crampon en saillie extérieure qui peut pivoter dans un évidement interne présentant une dépouille. A cet effet, la vis de réglage se visse dans l'une des griffes de serrage, de sorte que sa tête de compression, laquelle est située radialement à l'intérieur, appuie uniformément contre des portions de contact des deux autres griffes de serrage.

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