Tool Condition Monitoring While Hard Turning EN19 Alloy Steel Using Coated Carbide Insert | Original Article

ABSTRACT:

This paper presents study of tool condition monitoring of Titanium Aluminium Nitride coated carbide insert while hard turning EN 19 alloy steel. A set of experiments were performed on CNC lathe with coolant. Cutting forces were measured by Kistler piezo-electric dynamometer. Tool flank wear was measured by tool maker’s microscope. Influence of cutting speed, feed rate and depth of cut on tool wear is investigated. Experiments were conducted by varying one cutting parameter at a time. In this study, depth of cut is 0.3mm and it is kept constant throughout the experiment. Graphs are plotted to find the relation between cutting force and tool wear. Experimental results show that three directional cutting force components increase with flank wear. Among three components of cutting forces, tangential cutting force is largest and radial cutting force is smallest. Tangential cutting force component increases sharply when tool wear increases.