Abstract:In order to understand lubrication condition and antifriction mechanism of surface texture,the flow of lubricating fluid between contact surfaces was analyzed by the FLUENT.The pressure distribution,bearing capacity and inlet mass flow rate of the lubricating fluid with different texture area rate,depth and shape parameters were studied.The optimization parameters of texture were obtained,and the influence of the velocity of oil film upper wall and the oil film thickness on the lubrication performance was analyzed.The results show that with the increase of the area ratio,the dynamic pressure effect is first increased and then decreased,and the total bearing capacity is decreased continuously.With the increase of the texture depth,the total pressure bearing capacity is firstly increased and then tends to remain unchanged,and the dynamic pressure effect tends to decrease.Square pit texture has better total pressure bearing capacity,straight groove texture has the best dynamic load,and wave groove texture has better dynamic and total load.With the increase of oil film thickness,the inlet mass flow rate is increased sharply,and the total pressure is decreased.With the increase of the velocity of oil film upper wall,the total pressure of the oil film changes little,and the dynamic pressure is decreased rapidly.The optimized texture can reduce the friction of the toolchip interface and the tool wear rate,and the selection of the cutting speed and the oil film thickness can guide the setting of machining parameters.