Foundation convenient for fine adjustment of position of manipulator

The utility model discloses a foot margin convenient for fine adjustment of the position of a manipulator, which comprises a supporting bottom plate, a screw rod is arranged at the central position of the supporting bottom plate, a movable plate, an adjusting nut and a manipulator connecting piece are sequentially arranged on the screw rod from bottom to top, and a universal ball bearing sleeve is arranged on the bottom surface of the movable plate. A universal ball bearing is arranged in the universal ball bearing sleeve; a screw is arranged on the movable plate and penetrates through the movable plate to be connected with the universal ball bearing sleeve, and a through hole is formed in the position, corresponding to the universal ball bearing sleeve, of the supporting bottom plate. The mechanical arm is novel and reasonable in structure and convenient to use, the universal ball bearing arranged in the bearing sleeve can horizontally move in all directions, the installation position of the mechanical arm c