Identification of thermal effects on the diameter deviation of inhomogeneous aluminum metal matrix composite workpieces when dry turning

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Schindler S, Zimmermann M, Aurich JC, Steinmann P
Zeitschrift: Production Engineering
Verlag: Springer Verlag
Jahr der Veröffentlichung: 2015
Band: 9
Heftnummer: 4
Seitenbereich: 473-485
ISSN: 0944-6524
eISSN: 1863-7353
Sprache: Englisch


Abstract


The use of dry cutting is associated with considerable thermal loads on the machine tool, the tool and the workpiece because of the missing heat convection through the cutting fluid. These thermal loads cause thermal expansions of the components. The accuracy of machining is thus decreased. In recent years, particularly the thermal expansions of the workpiece and the tool attained significance due to the increased demands on the machining accuracy. Aluminum metal matrix composites (Al-MMCs) show a poor machinability due to the reinforcement of light metal alloys via hard and abrasive materials. Dry turning of such composites is therefore accompanied with high thermal workpiece and tool loads. In this paper, finite element models of the workpiece and the tool are used in order to calculate the temperature distribution and thus the thermally induced expansion of the workpiece and the tool when turning AL-MMC regarding the cutting condition used. The removal of material and the heat flow to the environment are considered. The required boundary conditions (e.g. the heat flow into the workpiece) for the simulations were determined using experimental results. A new evaluation method of experimental diameter measurement validates the numerically calculated diameter deviations and reveals a considerable effect of the thermal expansions of the workpiece and the tool on the accuracy of machining.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Schindler, Stefan
Lehrstuhl für Technische Mechanik
Steinmann, Paul Prof. Dr.-Ing.
Lehrstuhl für Technische Mechanik


Einrichtungen weiterer Autorinnen und Autoren

Technische Universität Kaiserslautern


Zitierweisen

APA:
Schindler, S., Zimmermann, M., Aurich, J.C., & Steinmann, P. (2015). Identification of thermal effects on the diameter deviation of inhomogeneous aluminum metal matrix composite workpieces when dry turning. Production Engineering, 9(4), 473-485. https://dx.doi.org/10.1007/s11740-015-0629-4

MLA:
Schindler, Stefan, et al. "Identification of thermal effects on the diameter deviation of inhomogeneous aluminum metal matrix composite workpieces when dry turning." Production Engineering 9.4 (2015): 473-485.

BibTeX: 

Zuletzt aktualisiert 2019-06-08 um 09:03