Ambient Influences on Thermal Errors in Machine Tools: Challenges, Modelling and Compensation Konferenzpaper uri icon

 

Abstract

  • Abstract Thermally induced errors are one of the main factors contributing to positioning inaccuracies of cutting machine tools. They are caused by machine-internal, process-related and external heat sources and sinks. Of these three causes, ambient effects pose a particular challenge, because these effects are slow, but large-scale and thus very strong. This paper presents various methodologies to accurately and efficiently model ambient effects in simulation-based thermal machine tool studies. This includes a simplified method for categorizing natural convection based on the surface orientation, methods for obtaining localized heat transfer coefficients via computational fluid dynamics (CFD) simulations and for applying them in real-time to thermal FEM simulations and methods for modelling the complex conditions in the machine tool workspace during cutting operations. The paper also presents some best practices for measuring ambient effects and for the parametrization of CFD simulation models. For a specific milling machine tool, various relevant load scenarios were simulated as well as measured and the results will be shown to demonstrate the efficacy of the simulation models and the scope of the ambient effects. Aside from the mere study and modelling of ambient effects, their reduction or compensation will also be addressed. Different methods for predicting the environment-induced thermal error will be presented, including the use of data-driven black-box methods, transfer functions and simulation-based methods.

AutorInnen

Veröffentlichungszeitpunkt

  • 2026

Review-Status

  • Peer-Reviewed

Zugangsrechte

  • Open Access

Startseite

  • 239

letzte Seite

  • 271

Seitenzahl

  • 32

Internationale Standardbuchnummer (ISBN) 13

  • 9783032011930
  • 9783032011947