This paper introduces the optimization of the machining process of ball support parts in detail, through the optimization of the technological process and the numerical control program of these parts, and rationally designs the tools, selects the new type of convertible tools, and then optimizes the machining cutting parameters through orthogonal experiments. Finally, the machining verification is carried out. It improves the production efficiency of this kind of part, saves the part material, improves the surface quality of the part, and has a certain reference for the processing of this type of part in the future.