Identification of a friction model for minimum quantity lubrication machining

In this paper, we present the development of a friction model as a function of the cutting speed and tool feed rate when machining with minimum quantity lubrication. A finite element model of the minimum quantity lubrication process is developed and simulated by considering the friction coefficient as a state variable. The tool-chip friction coefficients for different machining conditions are obtained through inverse modelling and presented as a mechanistic model. The validated model is utilized to understand the effects of machining conditions, temperature, and contact length of the tool-chip interface.