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Title: Process concatenation to reduce thermal changes in machine tools

Authors: E. Wenkler; M. Selch; A. Hellmich; S. Ihlenfeldt

Addresses: Institute for Machine Tools and Control Engineering, Technische Universität Dresden, Dresden, 01062, Germany; Fraunhofer Institute for Machine Tools and Forming Technology IWU, Dresden, 01069, Germany ' Fraunhofer Institute for Machine Tools and Forming Technology IWU, Dresden, 01069, Germany ' Fraunhofer Institute for Machine Tools and Forming Technology IWU, Dresden, 01069, Germany ' Institute for Machine Tools and Control Engineering, Technische Universität Dresden, Dresden, 01062, Germany; Fraunhofer Institute for Machine Tools and Forming Technology IWU, Dresden, 01069, Germany

Abstract: Thermal effects in machine tools are responsible for a significant amount of produced scrap. Therefore, various approaches have been investigated and applied on machine tools to reduce thermal changes during manufacturing. Most of them target the machine tool and its operational state and can therefore just react to the thermal changes caused by the process. This paper shows how thermal changes can be reduced already in the manufacturing planning stage. With the use of a virtual numerical control (VNC) and loss models, power losses can be estimated, enabling the concatenation of processes to achieve minimal jumps in power loss from one process to another.

Keywords: temperature; thermal error; heat treatment; machine tool; machining; energy efficiency; planning; simulation; optimisation; economics.

DOI: 10.1504/IJMMS.2022.124918

International Journal of Mechatronics and Manufacturing Systems, 2022 Vol.15 No.2/3, pp.167 - 184

Received: 28 Oct 2021
Accepted: 19 Jan 2022
Published online: 16 Aug 2022 *