Middle supporting plate for precise numerical control machine tool

The utility model relates to the technical field of numerical control machine tools, in particular to a middle supporting plate for a precise numerical control machine tool, which comprises a supporting plate main body, a limiting inserting plate is slidably connected to the rear side of the upper end of the supporting plate main body, a sliding block is slidably connected to the inside of the limiting inserting plate, and an inserting buckle is fixedly connected to the lower end of the sliding block. The lower side of the front end of the limiting insertion plate is fixedly connected with a bent limiting plate, and the front side of the upper end of the supporting plate body is slidably connected with a limiting insertion column. Through the arrangement of the positioning holes, not only can the insertion buckles be inserted, but also the limiting insertion column can be installed, and meanwhile the limiting insertion plate can be positioned and installed; the two-way screw rod can drive the sliding block to