ACTUATOR 2016 Manuscript P 57


Author: Hubert Borgmann
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Pages: 4
Language: English
Publication date: 01/06/2016
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Manuscript P 57 published in Conference Proceedings ACTUATOR 2016
Design of a Balancing Device for Small High Speed Rotors

D. Pfeffer, F. Klug, H.F. Schlaak, P.P. Pott
Technische Universität Darmstadt, Darmstadt, Germany

Abstract:
An unbalance in high speed rotating machines leads to unwanted noise and vibration and thus to increased wear in bearings and higher friction losses. Therefore, it is desired to reduce the unbalance of the rotor to a welldefined amount, at which the radial forces and moments do not peril the intended life-time of the whole system. Taking an air-driven small-scale turbine as an exemplary application, a balancing device for small high speed rotors has been designed and characterized. The device is designed to allow rotational speeds up to 65 000 rpm. Based on dynamic force measurement using piezo-electric PZT stacks and digital lock-in-amplifiers, unbalance can be measured down to less than 1 mg·mm. In an iterative process, manual correction of the unbalance using a hand-operated rotary tool is verified and, if necessary, repeated. A key experiment shows, that an initial unbalance of 300 mg·mm can be reduced by a factor of more than 100, using the balancing device outlined above.
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 (www.actuator.de)
Project Manager ITHEC, International Conference and Exhibition on Thermoplastic Composites, Bremen, Germany, and Editor of the ITHEC Conference Proceedings (www.ithec.de)

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