| 摘要 |
A clamping device for clamping a machine element (3), in particular a tool holder for a drilling, milling or grinding tool or the like, which rotates about an axis of rotation (9), comprises a base body unit (11) which has a receiving opening (21) which is central with respect to the axis of rotation (9) and into which a coupling shank (5) of the machine element (3) can be fitted axially from one end, a chuck (23) which is arranged in the receiving opening (21), and a chuck-actuating unit (25), which is guided on the base body unit (11) in such a manner that it can be displaced in the axial direction relative to the latter, for actuating the chuck (23). In order to achieve a high reproducibility of the measurements of unbalance when using this clamping device (1) in a balancing machine, the chuck-actuating unit (25) is axially guided by means of a rolling body arrangement (35) on the base body unit (11), the rolling bodies (39) of which arrangement roll along rolling surfaces (41, 43) of the base body unit (11) and of the chuck-actuating unit (25). The rolling body arrangement (35) is preferably formed by a ball cage unit, the balls of which (39) are fitted with prestress between the base body unit (11) and the chuck-actuating unit (25).
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