Effect of machining variables and coolant application on HSS tool temperature during turning on a CNC lathe

2nd International Conference on Engineering for Sustainable World

Ejieji, T.^1 ; Adedayo, S.M.^1 ; Bello, O.W.^1 ; Abdulkareem, S.^1

Department of Mechanical Engineering, University of Ilorin, Ilorin, Nigeria^1

关键词: Carbon equivalent;    CNC lathe;    Computerized numerical control;    Coolant applications;    Cutting parameters;    Ferritic stainless steel;    Temperature profiles;    Variables selections;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/413/1/012004/pdf
DOI  :  10.1088/1757-899X/413/1/012004

来源: IOP

【 摘 要 】

Cutting variables in the operation of a Computerized Numerical Control (CNC) lathe machine can affect parameters such as the work piece, tool temperature, material surface finish, material properties and vibration. A programmable CNC lathe machine was used in this work to examine the effect of different cutting variables on HSS tool temperature. Carbon steel material of C20 carbon equivalent and ferritic stainless steel was machined at different cutting speeds, depth of cut with an HSS tool. A type K thermocouple was fitted at a distance 5 mm from tool nose by a direct surface contact on tool under an applied pressure. A constant feed rate was maintained throughout the experiments. Temperature profiles were obtained for different depth of cut ranging between 0.5 and 2.5 mm and cutting speed range of 500 to 800 rpm and a constant feed rate of 7 mm/minute. Tool Temperatures were observed to increase with cutting speed and depth of cut. Increase in depth of cut from 0.5 to 1.5 mm resulted into a 64% increase in tool temperature while coolant application reduced tool temperature by as much as 63.2% in stainless steel. Tool life can be significantly enhanced by appropriate machining variables selection.