ACTUATOR 2016 Manuscript P 49

Author: Hubert Borgmann
Pages: 4
Language: English
Publication date: 26/07/2016
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Manuscript P 49 published in Conference Proceedings ACTUATOR 2016
Novel Radial Locking Actuator with Magnetoactive Polymer

H. Böse, T. Gerlach
Fraunhofer ISC, Würzburg, Germany

A new magnetically switchable locking actuator based on magnetoactive polymers (MAP) is introduced. It contains two MAP rings between an inner shaft and an outer housing, rotatable with respect to each other, and a coil which generates the magnetic field. In the non-activated state without magnetic field, free rotation between the inner and outer components is possible. However, when the magnetic field is activated by a current in the
coil, the MAP rings expand radially and clamp the inner and outer components of the actuator to each other. A demonstrator of the radial locking device was designed, the magnetic circuit was simulated and the device was manufactured and tested. The maximum locking torque in the activated state was measured as nearly 3 Nm and the minimum torque in the non-activated state was found to be negligible. Due to the radial expansion of the MAP rings and the corresponding uniform attachment to the inner shaft of the actuator, the clamping process is very smooth.
El vendedor asume toda la responsabilidad de esta entrada.
Hubert Borgmann, MESSE BREMEN,
Project Manager ACTUATOR, International Conference and Exhibition on New Actuators and Drive Systems, Bremen, Germany, and Editor of the ACTUATOR Conference Proceedings (
Project Manager ITHEC, International Conference and Exhibition on Thermoplastic Composites, Bremen, Germany, and Editor of the ITHEC Conference Proceedings (

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