Slipline Field Analysis of Deformation In Metal Machining with Worn Tool with Adhesion Friction in Contact Regions

Abstract

The subject of friction is important in all engineering applications wherever solid surfaces are in sliding contact with each other. This is particularly true in metal working processes where the sliding pair of surfaces are metals and where plastic deformation of the softer of the two metals usually takes place under conditions of high normal pressure. In orthogonal metal cutting processes frictional drag apparently is encountered on the rake face between chip and tool and as the tool wears, additional frictional drag also occurs between flank of the tool and the work piece. Friction at these contact regions affects the chip formation process, power consumption, metal removal rate, quality of machined surface and active life of the cutting tools. Although, friction in cutting is of interest for fundamental studies of wear and chemical reaction, under conditions of high temperature and high pressure, there seems to be a lack of agreement as to how to represent this interface...