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Mechatronic options for increasing productivity and accuracy in production

 
: Drossel, W.-G.; Neugebauer, Reimund; Pagel, K.; Bucht, A.; Junker, T.

:
Postprint urn:nbn:de:0011-n-1416179 (1.3 MByte PDF)
MD5 Fingerprint: f47ea4cc4c37f64c42fad25cac427640
Created on: 30.3.2011


Neugebauer, Reimund ; Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik -IWU-, Chemnitz:
Sustainable production for resource efficiency and ecomobility : Manufacturing Colloquium, September 29-30, 2010 Chemnitz; ICMC 2010
Zwickau: Verlag Wissenschaftliche Scripten, 2010 (Berichte aus dem IWU 54)
ISBN: 978-3-942267-04-5
pp.579-602
International Chemnitz Manufacturing Colloquium <2010, Chemnitz>
English
Conference Paper, Electronic Publication
Fraunhofer IWU ()
mechatronic; adaptive spindle; Actuator-Sensor-Unit; thermal compensation

Abstract
This paper presents mechatronic options to increase the productivity and accuracy in Production. Additional piezo-based components in drive trains can significantly improve the dynamic behaviour of machine tools. In this article we present a piezo-based actuator-sensor-unit that is able to reduce uniaxial vibrations in ball screw driven feed axis of machine tools. Using this component yielded in an increase of the drives controller parameters by more than 100%. Beyond this piezo-based-components also possess to increase the accuracy during milling operations and even allow additional fine positioning movements during machining operations. In this paper we present an adaptive spindle as an example to benefit both. This is achieved by an overlaid piezo-based hexapod-kinematics that is mounted between the machine structure and the motor spindle. Shape Memory Alloys and Phase Change Materials represent another group of active materials that are usable to increase accuracy and dynamics. Concerning thermal machine behaviour they are suitable to compensate thermal deformations. Compared to piezo-based solutions they rather don't need additional energy because the activation energy is supplied by the process.

: http://publica.fraunhofer.de/documents/N-141617.html