Cutting Edge Nose Radius and Cutting Parameters Effect on Productivity in Turning of Cylinder Liners with Interrupted Area

Productivity in the machining of grey cast iron with interrupted area is adversely affected to tool failure which is significantly affect on the cycle time or processing time which increases the cost of the production. It can be overcome by proper selection of inserts, tool geometry, and cutting conditions to obtain economical benefits. Tool nose radius has significant influence on tool life which reduces the tool changing time with least cycle time. In this research work, an attempt has been made to investigate the effect of tool nose radius under different cutting conditions and their effect on cycle time and productivity. The measurement has been carried out from rough boring operation at three cutting speed (vc) and feed rate (f). Depth of cut (doc) is kept constant at 2.5mm.cutting tool used in this work is multilayer coated tool of nose radius 0.8mm and 1.2mm nose radius. Tool coated with titanium nitride (tin) + titanium carbo nitride (ticn) + aluminium oxide (al2o3) coating. The insert is designated with snmg 120408. Cutting conditions used is speed (vc) 100m/min, 125m/min and 150m/min. Feed rate (f) 0.20mm/rev, 0.25mm/rev, 0.27mm/rev.results of the present work determine the appropriate parameter for increasing the productivity by decreasing the cycle time using two different nose radius tools.