Abstract
This paper deals with the effect of minimal quantity lubrication (MQL) of cutting oil in terms of quantity of oil supply, viscosity grade of oil and concentration of EP additives. Experiments were conducted by simulating bobbing by fly tool cutting on a milling machine. The results obtained are summarized as follows. (1)The quantities of oil supply of 1mL/h to 15mL/h in the MQL system are suitable for the bobbing with regard to decreasing the flank wear. (2)The polyol ester having low viscosity grade of 19.1mm^2/s is suitable for the MQL system. (3)Sulfurized fatty oil, of which the concentration is 1.0%, is suitable for the MQL system.
