Effects of hot chips in dry cutting processes on the temperature field and displacement of the machine tool table

• Autorzy: Albrecht Tom , Thiem Xaver , Penter Lars , Ihlenfeldt Steffen

Identyfikatory

DOI

10.5604/01.3001.0013.4078

• Języki publikacji: EN

Abstrakty

EN

In machining up to 75% of the geometrical variations of work piece, features are caused by thermally induced deformations of machine components [1]. Since in dry cutting up to 80% of the thermal energy is stored in the chips [2], we expected a significant effect of these process-dependent heat sources on the machine accuracy. Based on preliminary simulation results, we systematically applied determined quantities of heated chips to a machine table to understand their impact on the temperature field. Temperature sensors where used to measure the temperature change on the tables surface and in the structure. Length measuring probes measured the corresponding deformations at 24 points distributed over the table. The measurements show a temperature change of 4 K at the surface and 3 K in the structure near the heat source after 6 minutes of exposure to 500°C chips. In this case, the impact on the temperature field is local but causes the bending of the table. We recorded 8 micron of thermo-elastic deformations. The results suggest that high-accuracy processes with large energy input, such as hard turning, require the heat induced into the machine structure by hot chips to be implemented into compensation methods and correction algorithms.

Słowa kluczowe

EN

accuracy; thermal error; deformation

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2019
• Tom: Vol. 19, No. 3
• Strony: 31--42
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Albrecht Tom

• Institute of Mechatronic Engineering Dresden (IMD), TU Dresden, Germany

autor

Thiem Xaver

• Institute of Mechatronic Engineering Dresden (IMD), TU Dresden, Germany

autor

Penter Lars

• Institute of Mechatronic Engineering Dresden (IMD), TU Dresden, Germany
• Fraunhofer Institute for Machine Tools and Forming Technology (IWU), Germany

autor

Ihlenfeldt Steffen

• Institute of Mechatronic Engineering Dresden (IMD), TU Dresden, Germany
• Fraunhofer Institute for Machine Tools and Forming Technology (IWU), Germany

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).