Magnetic clutch for locking swivel joint in swivelable tracer, has magnet which is arranged at coupling part such that it is movable between two different positions, where magnet adheres to coupling unit in one position

摘要

The clutch has a permanent magnet (42), which is arranged at a coupling unit (26) such that the magnet is movable between two different positions. The magnet magnetically adheres to a coupling unit (28) in one position to generate retaining force between the coupling units. An electromagnet (38) is formed to move the magnet (42) in one of the positions. The magnet (42) adheres to the coupling unit (26) in the other position. An independent claim is also included for a probe head for a coordinate measuring device, comprising a base.