Implementation and demonstration of characteristic diagram as well as structure model based correction of thermo-elastic tool center point displacements

• Autorzy: Putz M. , Ihlenfeldt S. , Kauschinger B. , Naumann C. , Thiem X. , Riedel M.
• Języki publikacji: EN

Abstrakty

EN

In milling machines, waste heat from motors, friction effects on guides and most importantly the milling process itself greatly affect positioning accuracy and thus production quality. Therefore, active cooling and lead time are used to reach thermal stability. A cheaper and more energy-efficient approach is to gather sensor data from the machine tool to predict and correct the resulting tool center point displacement. Two such approaches are the characteristic diagram based and the structure model based correction algorithms which are briefly introduced in this paper. Both principles have never been directly compared on the same demonstration machine, under the equal environmental conditions and with the same measurement setup. The paper accomplishes this comparison ona hexapod kinematics examined in a thermal chamber,where the effectiveness of both approaches is measured and the strengths and weaknesses of both are pointed out.

Słowa kluczowe

EN

hexapod; characteristic diagram; thermal error; simulated; measured; correction algorithm

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2016
• Tom: Vol. 16, No. 3
• Strony: 88--101
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Putz M.

• Fraunhofer Institute for Machine Tools and Forming Technology IWU

autor

Ihlenfeldt S.

• Dresden University of Technology TUD

autor

Kauschinger B.

• Dresden University of Technology TUD

autor

Naumann C.

• Fraunhofer Institute for Machine Tools and Forming Technology IWU

autor

Thiem X.

• Dresden University of Technology TUD

autor

Riedel M.

• Dresden University of Technology TUD

Bibliografia

• [1] BRYAN J., 1990, International status of thermal error research, CIRP Annals - Manufacturing Technology, 39/2, 645-656.
• [2] GROSSMANN K. et al., 2015, Thermo-energetic design of machine tools, Springer.
• [3] PRIBER U., 2003, Smoothed grid regression, proceedings workshop fuzzy systems, 13, Dortmund.
• [4] MAYR J. et al., 2009, Compensation of thermal effects on machine tools using a fdem simulation approach, 9th International Conference and Exhibition on LASER Metrology, Machine Tool, CMM and Robotic Performance, London.
• [5] NAUMANN C., PRIBER U., 2012, Modellierung des Thermo-Elastischen Verhaltens von Werkzeugmaschinen mittels Hochdimensionaler Kennfelder, Proceedings Workshop Computational Intelligence, Dortmund.
• [6] NAUMANN C. et al., 2015, Characteristic diagram based correction algorithms for the thermo-elastic deformation of machine tools, Proceedings 48th CIRP Conference on Manufacturing Systems, Naples.
• [7] HERZOG R., RIEDEL I., 2015, Sequentially optimal sensor placement in thermo-elastic models for real time applications, Optimization and Engineering, 16/4, 737-766.
• [8] GROSSMANN K., MÜHL A., THIEM X., 2014, Modular control integrated correction of thermoelastic errors of machine tools based on the thermoelastic functional chain, Advanced Materials Research, 1018, 411-418.
• [9] ESS M., 2012, Simulation an compensation of thermal errors of machine tools, Dissertation, ETH Zurich.
• [10] GALANT A., GROSSMANN K., MÜHL A., 2011, Model order reduction for thermo-elastic models of frame structural components on machine tools, in ANSYS Conference & 29th CADFEM Users’ Meeting Stuttgart.
• [11] GALANT A. et al., 2012, Berechnung von Temperaturfeldern an Werkzeugmaschinen. Vergleichende Untersuchung alternativer Methoden zur Erzeugung kompakter Modelle, ZWF Zeitschrift für wirtschaftlichen Fabrikbetrieb, 107/6, 457-461.
• [12] KAUSCHINGER B., SCHRÖDER S., 2015, Uncertain parameters in thermal machine-tool models and methods to design their metrological adjustment process, Applied Mechanics and Materials, 794, 379-386.
• [13] GROSSMANN K. et al., 2015, Challenges in the development of a generalized approach for the structure model based correction, Applied Mechanics and Materials, 794, 387-394.
• [14] ISO 230-1 : 1996, Prüfregeln für Werkzeugmaschinen Teil 1: Geometrische Genauigkeit von Maschinen, die ohne Last oder unter Schlichtbedingungen arbeiten, Beuth, July, 1999.
• [15] FAN K. et al., 2015, Integrated geometric and thermal error modeling and compensation for vertical machining centers, The International Journal of Advanced Manufacturing Technology, 76/5-8, 1139-1150.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.