Experimental Investigation to Study the Effect of the Cutting Fluid and Carbide Insert Shapes on Machining of AISI 4140

Abstract — There are many machining parameters which affects the surface finish of product. One important machining parameter is the shape of the cutting tool and another one is the cutting condition (dry or wet). In this study, the performance of three different shapes of carbide inserts (triangular, round and square shapes) were investigated when turning AISI 4140 under wet conditions. Depth of cut, cutting speed and feed has been selected as the machining parameters for this study. Full factorial design was used for this experimental study. It has been observed that cutting tool shape and conventional cutting fluid has a great role in controlling the surface quality along with the other machining parameters. Index terms- Surface roughness, speed, feed, depth of cut and tool shape. I