403 Temperature Predictions in Machining

概要

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In this paper, a numerical model based on the finite difference method is presented to predict tool and chip temperature fields in continuous machining and time varying milling processes. Machining operations are studied by modeling the heat transfer between the tool and chip at the tool rake face contact zone. The shear energy created in the primary zone, the friction energy produced at the rake face-chip contact zone and the heat balance between the moving chip and stationary tool are considered. The temperature distribution is solved using finite difference method. The model is also extended to milling where the cutting is interrupted and the chip thickness varies with time. The proposed model models combines the steady-state temperature prediction in continuous machining and the transient temperature evaluation in interrupted cutting operations. The mathematical models and simulation results are in satisfactory agreement with experimental temperature measurements reported in the literature.
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