Einaxiger linear/rotierender Antrieb

摘要

The actuator comprises an actuator probe (14) mounted on a housing (12). A magnet (26) and an electric coil (24) are fixedly and slidably mounted on the housing, respectively. The electric coil is moved by interaction of magnetic fluid of the magnet and the electromagnetic field of the coil. A rotatable drive shaft (40) of a motor (32) that is mounted on the coil, is interconnected with the actuator probe through a rotary servo coupling. The rotational and translational motion of the probe around and along a predetermined axis is then carried by the motor and the coil, respectively. A bearing unit comprising two bearing assemblies (44,46) that are dislanied from each other, is mounted on the housing and is engaged with the actuator probe for stabilising translational movement of the actuator probe.