| 摘要 |
The invention relates to a device for measuring the geometry of a wheel axle of a motor vehicle, said device comprising a clamping chuck ( 56 ) which is provided with clamping jaws ( 32, 34, 36 ) and is used to receive a hub of a wheel axle, and a drive for rotating the clamping chuck ( 56 ). In order to increase the measuring precision, the drive is embodied as an electric drive, especially as a servomotor, and both rotatably drives the clamping chuck ( 56 ) and actuates the clamping jaws ( 32, 34, 36 ) of the clamping chuck ( 56 ) in the radial direction. Furthermore, according to the invention, the clamping jaws are radially displaced by means of a link motion with an eccentric plate or a spiral motion with a spiral of Archimedes in such a way as to obtain an automatic lock.
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