Adjustable self-centering precise flat tongs

The utility model discloses adjustable self-centering precise flat tongs, and belongs to the technical field of flat tongs. Comprising a base, a centering assembly, a walking driving piece, a rotating support and a pedestal, a first sliding way is formed in the base, and protruding parts are integrally manufactured at the two ends of the base; the centering assembly comprises two slope sliding blocks arranged on the inner side of the first sliding way in a sliding mode, the slope sliding blocks are arranged oppositely, penetrating holes are formed in the two sides of the lower portion of each slope sliding block, and a sliding shaft penetrates through the penetrating holes. The two ends of the sliding shaft are fixed to the protruding parts. The walking driving piece and the slope sliding block are mounted; the rotating support is fixed to the middle of the top face of the base in a right-facing mode. The bottom face of the pedestal is of a slope structure attached to the slope sliding block, and swing shafts