Abstract
It is necessary to optimize the supply of oil mist and compressed air in the drilling case of long distance and small diameter using MQL (Minimal Quantity of Lubrication) method. In this study, firstly the total energy for deformation process and distributions of cutting heat were analyzed, then under the condition that a steady-state compressible adiabatic turbulent flow is assumed based on the ordinary MQL cutting conditions, the relationships of main parameters were obtained through the analysis of the calculation software, such as the thickness of oil mist, the flow speed, the temperature of the compressed air, and the average temperature of tool. Finally, the optimal volumes of oil mist and compressed air of MQL in drilling were presented for the cutting process.
