Full-automatic numerical control mechanical arm

The utility model discloses a full-automatic numerical control mechanical arm which comprises two or more rotating arms, a lifting frame, a slewing frame, a balance weight frame and tongs, the heads and the tails of the rotating arms are connected through servo rotating mechanisms I, an arm body of the first rotating arm is mounted on a stand column through a servo rotating mechanism II, the lifting frame is mounted at the tail end of the last rotating arm through a servo lifting mechanism, the slewing frame is mounted on the lifting frame through a servo slewing mechanism, the two tongs are mounted on the slewing frame and are in left and right symmetry relative to the rotating center of the slewing frame, the balance weight frame is mounted at the head end of the first rotating arm through a servo moving mechanism, and the length of the working section arm body of the first rotating arm is larger than that of the balance weight section arm body of the first rotating arm. The working range of the full-automatic numerical control mechanical arm can be designed according to needs, and the demands for the working range can be met by changing the height of the stand column, and the length and the number of the rotating arms.