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Kinematically Coupled Force Compensation—Experimental Results and Advanced Design for the 1D-Implementation

1
TU Dresden, Faculty of Mechanical Science and Engineering, Institute of Mechatronic Engineering, Chair of Machine Tools Development and Adaptive Controls, 01062 Dresden, Germany
2
Fraunhofer Institute for Machine Tools and Forming Technology IWU, 01187 Dresden, Germany
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Author to whom correspondence should be addressed.
This paper is an extended version of the conference paper: Ihlenfeldt, S.; Müller, J.; Merx, M.; Peukert, C. Kinematically coupled Force Compensation-experimental results for the 1D-implementation. In Proceedings of the XIVth International Conference on High Speed Machining, Donostia/San Sebastian, Spain, 17–18 April 2018.
J. Manuf. Mater. Process. 2019, 3(1), 24; https://doi.org/10.3390/jmmp3010024
Received: 31 December 2018 / Revised: 22 February 2019 / Accepted: 27 February 2019 / Published: 18 March 2019
(This article belongs to the Special Issue New Findings and Approaches in Machining Processes)
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Abstract

Typically, the feed dynamics of machine tools are limited to reduce excitations of machine structure oscillations. Consequently, the potential increase in productivity provided by electrical direct drives cannot be exploited. The novel approach of the Kinematically Coupled Force Compensation (KCFC) combines the principles of redundant axes and force compensation to achieve an increase in the machine’s feed dynamics. Because the drive reaction forces are directly applied to the machine frame, they cancel out each other perfectly if the relative motion at the Tool Centre Point (TCP) is split according to the mass ratio of the slides. In this paper, the principle of KCFC is introduced briefly and possible improvements in the design of machine structures and control are presented. The results of experimental investigations obtained by means of a 1D-KCFC Test Bed illustrate the effectiveness of the principle. Moreover, a further increase of the compensation quality can be achieved by decoupling the force flow from the machine frame, by means of elastic elements. Finally, an outlook on future research with reference to the 1D-implementation as well as possible applications of the KCFC in highly productive processes is given. View Full-Text
Keywords: linear motor; control; compensation; feed drive; redundant axis linear motor; control; compensation; feed drive; redundant axis
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Ihlenfeldt, S.; Müller, J.; Merx, M.; Peukert, C. Kinematically Coupled Force Compensation—Experimental Results and Advanced Design for the 1D-Implementation. J. Manuf. Mater. Process. 2019, 3, 24.

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