Numerical modelling of tool wear in turning with cemented carbide cutting tools

Abstract

A numerical model is proposed for analysing the flank and crater wear resulting from the loss of material on cutting tool surface in turning processes due to wear mechanisms of adhesion, abrasion and fracture. By means of this model, the material loss along cutting tool surface can be analysed, and the worn surface shape during the workpiece machining can be determined. The proposed model analyses the gradual degradation of cutting tool during turning operation, and tool wear can be estimated as a function of cutting time. Wear-land width (VB) and crater depth (KT) can be obtained for description of material loss on cutting tool surface, and the effects of the distinct wear mechanisms on surface shape can be studied. The parameters required for the tool wear model are obtained from bibliography and experimental observation for AISI 4340 steel turning with WC-Co cutting tools.

Mini symposium on cutting and machining: 25 years of ESAFORM activity

“…The wear models were discussed in the flank wear prediction (Umbrello et al 2008). As another wear model, adhesion, abrasion, and fracture are included with the initial and the fast wear process (Franco et al 2007).…”