Abstract
Current machine tools for the machining of small workpieces show a remarkable disproportion of the machines’ size and the size of the components they produce. When trying to miniaturise such machine tools, feed axes play an important role. They position the workpiece and tool relative to each other and are, therefore, crucial for the accuracy and productivity of the machining process. The research and development of a highly accurate feed axis with a compact build space was the task of this project in the priority program SPP1476. Within the two phases of the priority program, different demonstrators for compact feed axis systems have been developed and evaluated. The final system uses a hydraulic fluid in order to realise a feed axis with a combined guidance system in a compact body. The use of piezoelectric valves enables a precise and highly dynamic control of the oil flows in the axis. In contrast to conventional hydrostatic guidance systems, the axis can not only absorb forces of the machining process and component movements but also provide functionalities for an active compensation of geometric errors. This compensation can be achieved by actively controlling the oil flow in the guidance system with piezoelectric orifices. The oil flow affects the gap widths between fixed guidance prisms and the moving housing of the axis. It can, therefore, compensate geometric errors by making small correctional movements in five degrees of freedom. An evaluation of the developed axis system shows that it meets the specified requirements and can provide highly accurate and dynamic movements within the desired build space.
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A linear compensation in x-direction can be achieved with offset-values for the linear actuator.
References
Bauer, J.: Hochintegriertes hydraulisches Vorschubsystem für die Bearbeitung kleiner Werkstücke mit hohen Fertigungsanforderungen. Shaker, Aachen (2016). ISBN 978-3-8440-4665-6
Kotschenreuther, J.: Empirische Erweiterung von Modellen der Makrozerspanung auf den Bereich der Mikrobearbeitung. Aachen: Shaker (Forschungsberichte aus dem Wbk, Institut für Produktionstechnik, Universität Karlsruhe (TH), Bd. 141) (2008). ISBN: 978-3-8322-7041-4
Utsch, T.P.: Steigerung der Arbeitsgenauigkeit mehrachsiger Maschinensysteme durch Kompakt- und Integralbauweise am Beispiel einer 5-Achs-Maschine. Apprimus-Verl, Aachen (2012). http://swb.bszbw.de/DB=2.1/PPN?PPN=362769249
Brecher, C., Utsch, P., Klar, R., Wenzel, C.: Compact design for high precision machine tools. Des. Ultraprecis. Micro Mach. Tools Key Enabling Technol. 50(4), 328–334 (2010). doi:10.1016/j.ijmachtools.2009.11.007
Bauer, J., Mack, D., Fleischer, J.: Highly integrated high precision fluidic feed axis. In: 6th CIRP International Conference on High Performance Cutting, HPC2014 14 (0), pp. 339–344 (2014). doi:10.1016/j.procir.2014.03.084
Bauer, J., Kern, D., Ayhan, S., Scherr, S., Fleischer, J., Seemann, W., Zwick, T.: Planar positioning stage for micro machining. Production Engineering, Jahrgang 2013, Special Issue. Springer (2013.). ISBN/ISSN. doi:10.1007/s11740-013-0474-2
Gleichner, A.: Aktive hydrostatische Führungen mit elektrorheologischen Flüssigkeiten. Vulkan, Essen (2000). http://swb.bsz-bw.de/DB=2.1/PPN?PPN=087022672
Knödel, A.: Adaptronische hydrostatische Drucktascheneinheit. Funktionserweiterung hydrostatischer Führungssysteme in Werkzeugmaschinen. Shaker, Aachen (2008). http://swb.bsz-bw.de/DB=2.1/PPN?PPN=285785540
Park, C.H., Oh, Y.J., Shamoto, E., Lee, D.W.: Compensation for five DOF motion errors of hydrostatic feed table by utilizing actively controlled capillaries. Precis. Eng. 30(3), 299–305 (2006). doi:10.1016/j.precisioneng.2005.10.002
Klee, B., Bauer, J., Graule, D., Brenner, D., Fleischer, J.: Compensation of geometric errors using a highly integrated hydraulic feed axis. In: WGP Congress 2015, 7–8.9.2015, Hamburg, Deutschland, Progress in Production Engineering, pp. 395–402. Trans Tech Publications, Pfaffikon (2015)
Norm DIN V 8602-1: Verhalten von Werkzeugmaschinen unter statischer und thermischer Beanspruchung—Allgemeine Regeln für die Prüfung von Fräsmaschinen (1990)
Norm DIN ISO 230-1: Werkzeugmaschinen—Prüfregeln für Werkzeugmaschinen—Teil 1: Geometrische Genauigkeit von Maschinen, die ohne Last oder unter Schlichtbedingungen arbeiten (1999) (ISO 230-1:1996)
Norm DIN ISO 230-2: Prüfregeln für Werkzeugmaschinen—Teil 2: Bestimmung der Positioniergenauigkeit und der Wiederholpräzision der Positionierung von numerisch gesteuerten Achsen (2011) (ISO 230-2:2006)
Weck, M., Brecher, C.: (Hg.): Werkzeugmaschinen 5. Messtechnische Untersuchung und Beurteilung, dynamische Stabilität. 7., neu bearbeitete Auflage. Springer, Berlin (SpringerLink: Bücher) (2006). http://swb.bsz-bw.de/DB=2.1/PPN?PPN=264360443
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Bauer, J., Klee, B., Fleischer, J. (2017). Highly Integrated Self-compensating Hydraulic Feed Axis for Small Machine Tools. In: Wulfsberg, J., Sanders, A. (eds) Small Machine Tools for Small Workpieces. Lecture Notes in Production Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-49269-8_7
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