Abstract. Taking the static pressure of the oil film, carrying capacity and stiffness of the table as the main study subjects, in order to achieve the optimum design of oil film thickness, optimization method of the objective function with the linear weighting has been proposed, and the optimum oil film thickness is calculated by using the tool box of MATLAB to program GUI and internal code. The result provides theoretical support for the design of oil film thickness in engineering practice.

Abstract. For large heavy-duty rotary table, in order to improve the machining precision of the workbench in practical work, the workbench is usually set above the oil film with stable thickness.