| 摘要 |
In an diaphragm chuck ( 1 ) with clamping jaws ( 3 ) inserted in its chuck body ( 2 ) that are in a driven connection with a diaphragm ( 4 ) that can be deformed by an axially adjustable actuator ( 5 ) and is provided with clamping jaws ( 3 ) with contact pieces ( 22 ), in which counterweights ( 8 ) assigned to the clamping jaws ( 3 ) are inserted into recesses ( 7 ) of the chuck body ( 2 ) and the clamping jaws ( 3 ) can be clamped against the diaphragm ( 4 ) by means of quick-clamping devices ( 31 ) engaging in the contact pieces ( 22 ), the clamping jaws ( 3 ) being supported directly against a first reference surface ( 23 ) running axially in parallel to the chuck body ( 2 ) in the clamping position and against a second reference surface ( 24 ) running at right angles to the first reference surface ( 23 ) and worked onto the diaphragm ( 4 ), the contact pieces ( 22 ) are each provided with an intermediate element ( 101 ), for example in the form of a ball joint ( 102 ), in the area between the clamping jaws ( 3 ) and the quick-clamping devices ( 31 ) by means of which the flexural moments and/or rotational torques created by the quick-clamping device ( 31 ) can be eliminated and it is possible to transmit exclusively axially vectored tensile forces onto the clamping jaws ( 3 ). The effect of this embodiment is that the clamping jaws ( 3 ) are not unfavourably influenced by the moments created by the quick-clamping devices ( 31 ). This is because moments of this kind are no longer transferred onto the clamping jaws ( 3 ) but rather the clamping jaws ( 3 ) are only exposed to axially vectored tensile forces with the effect that the clamping jaws ( 3 ) are not lifted off the reference surfaces ( 23, 24 ). <FIGREF IDREF="DRAWINGS">FIG. 1</FIGREF>
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