Influence of tool deterioration on the density of heat flux distribution in the cutting area in end milling of OT4 titanium alloy

Abstract

The influence of end mill teeth flank wear on the density of heat fluxes taking place in the cutting area is discussed in the paper. The following densities of heat fluxes are dealt with: the density of heat flux which occurs as a result of plastic deformation, the density of heat flux which occurs due to the friction of chips against the cutting face of the mill teeth and that which occurs as a result of flank surface friction against the workpiece being machined.The dependence of the cutting temperature on the value of the tool wear has been obtained. The thermal field in the tool has been calculated. The presented results of the numerical experiment have been obtained by a customized procedure that represents a revised procedure developed by Professor A.N. Resnikov for the conditions of endmilling.  The article describes the main stages of adaptation. There are four of them, and they are based on the geometrical specificity of the chip. Immediate calculation of temperature fields in the cutting area in the endmilling process was performed using a computer finite - element model. The model takes into account the hydrodynamics of the cooling lubricant which, in most cases, takes place in endmilling and other machining processes.

About the authors

D. V. Evdokimov

Samara State Aerospace University

Author for correspondence.
Email: dmitry.evd.ssau@gmail.com

Postgraduate student

Russian Federation

D. L. Skuratov

Samara State Aerospace University

Email: skuratov@ssau.ru

Doctor of Science (Engineering), Professor

Head of the Department of Engine Production Technology

Russian Federation

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