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Inherent thermal error compensation of machine tool structures with grated meneral casting

: Neugebauer, Reimund

TU Chemnitz:
Matar 2012, 9th International Conference on Machine Tools, Automation, Robotics and Technology. CD-ROM : 12 - 14 September 2012, Prague, Czech Republic
Prague, 2012 (MM Science Journal 2012, Special Issue)
Art. 12053, 5 S.
International Conference on Machine Tools, Automation, Robotics and Technology (MATAR) <9, 2012, Prague>
Fraunhofer IWU ()
thermal effect; compensation; mineral casting

Thermal effects on machine tools from processing and the environment often lead to non-axis-parallel deformations of machine components. For ensuring precision machining under workshop-typical conditions, the article describes the modelling and simulation of a machine tool bed with layers of a different thermal expansion made by mineral casting. By reducing the surface warping the internal compensation within the machine controls will be significantly simplified. In order to obtain optimum graded structures, it's important to analyze the expansion behaviour of the heterogeneous material. For this purpose, a measurement method is presented which makes it possible to determine the expansion coefficient precisely.