| 摘要 |
An exchanging device is for exchangeably holding a sensor, probe element or tool on a machine or on a machine part or a rotation-pivot unit on a machine or a machine part, preferably, a coordinate measuring apparatus. The exchanging device includes a take-up holder having a first bearing part and a counter piece ( 22 ) having a second bearing part corresponding to the first bearing part. A releasable clamping unit ( 42 ), for example, a magnetic clamping unit, is provided with which a clamping force is generated between the first and second bearing parts when the counter piece is accommodated on the take-up holder. A locking device having a first locking element ( 29 ) is provided on the take-up holder and a counter piece corresponding to the locking element ( 29 ) of the take-up holder is provided on the counter piece ( 22 ), for example, in the form of a slider ( 30 ). With the locking device, the counter piece can be mechanically coupled to the take-up holder in the state when it is taken up by the take-up holder. The locking element ( 29 ) includes a separation interface ( 31 ) and a securing element ( 33 ) is provided in the form of a line pretensioned by a compression spring ( 35 ) via which the separation at the separation interface ( 31 ) is limited to a predetermined distance. With the locking element and with the separation interface, it is achieved that, in the case of a collision, no forces which are too great can be applied to the components in that the locking element ( 29 ) is lifted out of its seat at the separation interface ( 31 ). With the securing element, it is ensured in the case of a collision that the counter piece ( 22 ) remains connected to the take-up holder ( 21 ) and a component, which is carried by the counter piece, does not drop off.
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