Modélisation du comportement thermique d'un outil de fraisage : approche par identification de système non entier

Battaglia, Jean-Luc; Elmoussami, Haj; Puigsegur, L.

doi:10.1016/s1631-0721(02)01542-5

Cited by 9 publications

(2 citation statements)

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“…This contact pressure value has been recently confirmed by a thermomechanical model [12] and numerical approaches [6,10]. The interfacial temperature is mainly generated by the plastic strains undergone in the primary shearing zone and by the friction at the tool-chip interface [13]. A temperature of 800 °C is observed in the tool tip against 1100 °C in a hot zone located at some tenth of millimetres from the tool tip [14].…”

Section: Methodology For Friction Analysismentioning

confidence: 56%

Contact and friction analysis at tool-chip interface to high-speed machining

et al. 2008

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Numerical approaches to high-speed machining are necessary to increase productivity and to optimise tool wear and residual stresses. In order to apply such approaches, the rheological behaviour and the friction model have to be correctly determined. The existing numerical approaches that are used with current friction models do not generate good correlations of the process variables, such as the cutting forces or toolchip contact length. This paper proposes a new approach for characterizing the friction behaviour at the toolchip interface in the zone near the cutting edge. An experimental device was designed to simulate the friction behaviour at the tool-chip interface. During the upsetting-sliding test conducted on this devise, the indenter rubs the specimen with a constant velocity, generating a residual friction track. The contact pressure and friction coefficient are determined from the test's numerical model and are then used to identify the friction data according to the interface temperature and the sliding velocity. These initial findings can be further developed for implementation in FEA machining models in order to increase productivity.

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Section: Methodology For Friction Analysismentioning

confidence: 56%

Contact and friction analysis at tool-chip interface to high-speed machining

et al. 2008

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“…The particularity of our approach is that the direct model that expresses the temperature at the sensors according to the heat fluxes has been established from the non integer system identification approach. Such an approach has already been exploited to estimate heat fluxes applied on each insert of a milling tool during machining (see [16] and [17]). Section 2 presents the complete experimental device that has been developed for temperature measurement in the tool during a drilling process.…”

Section: Introductionmentioning

confidence: 99%

Estimation of heat fluxes during high-speed drilling

Battaglia

Kusiak

2005

Int J Adv Manuf Technol

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Heat fluxes on each cutting edge of a carbide double cutting drill are estimated during a high-speed machining process from temperature measurements in the drill tool and a direct model that has been established using the non integer system identification approach. A single experiment is required in order to characterize the transient thermal behavior of the tool. The non integer system identification method is based on the recursive linear least square algorithm. The inverse method is based on the constant function specification approach. Results obtained during machining lead to predict the tool wear and possible tool positioning defect.

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