Open AccessThermally Caused Location Errors of Rotary Axes of 5-Axis Machine Tools
Author(s) -
Michael Gebhardt,
Alexander Schneeberger,
Sascha Weikert,
Wolfgang Knapp,
Konrad Wegener
Publication year - 2014
Publication title -
international journal of automation technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.513
H-Index - 18
eISSN - 1883-8022
pISSN - 1881-7629
DOI - 10.20965/ijat.2014.p0511
Subject(s) - compensation (psychology) , orientation (vector space) , machine tool , thermal conduction , thermal , focus (optics) , position (finance) , mechanical engineering , computer science , control theory (sociology) , engineering , materials science , geometry , physics , optics , artificial intelligence , mathematics , psychology , finance , control (management) , meteorology , psychoanalysis , economics , composite material
This paper presents the results of detailed thermal analysis of a 5-axis machine tool with focus on the rotaryaxes. The rotaryaxesare characterizedregarding 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.
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