IJAT Vol.8 No.4 pp. 511-522
doi: 10.20965/ijat.2014.p0511


Thermally Caused Location Errors of Rotary Axes of 5-Axis Machine Tools

Michael Gebhardt*, Alexander Schneeberger*, Sascha Weikert**,
Wolfgang Knapp*, and Konrad Wegener*

*Institute of Machine Tools and Manufacturing (IWF), ETH Zurich, CLA G6, Tannenstrasse 3, 8092 Zurich, Switzerland

**Inspire, Transfer Institute for Mechatronic Systems and Manufacturing Technology, Zurich, Switzerland

October 7, 2013
April 16, 2014
July 5, 2014
thermal behavior, 5-axis machining, modeling, simulation
This paper presents the results of detailed thermal analysis of a 5-axis machine tool with focus on the rotary axes. The rotary axes are characterized regarding their position and orientation errors as a function of the underlying thermal load, contributing significantly to the overall accuracy. A physical model is presented, which allows the simulation of the thermal behavior of the rotary axes based on the power input to the drives of the rotary axes and the heat conduction in a swiveling rotary table unit and convection into environment. This enables an external online-compensation of thermal errors. The compensation model is verified and validated.
Cite this article as:
M. Gebhardt, A. Schneeberger, S. Weikert, W. Knapp, and K. Wegener, “Thermally Caused Location Errors of Rotary Axes of 5-Axis Machine Tools,” Int. J. Automation Technol., Vol.8 No.4, pp. 511-522, 2014.
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