Tail self-tapping and flat-cutting screw mechanism

The utility model provides a self-tapping tail flat-cutting screw mechanism, which relates to the technical field of screw production and processing and comprises a static tooth plate, a square through hole is arranged on one side of the static tooth plate, a blade is movably inserted in the square through hole, mounting grooves are arranged on one side of the static tooth plate and close to two sides of the square through hole, and the blade is movably inserted in the mounting grooves. And fixing frames are fixedly mounted in the two mounting grooves, adjusting bolts are mounted on one sides of the fixing frames in a threaded mode, C-shaped fixing plates are rotatably mounted at the other ends of the adjusting bolts, and the interiors of the C-shaped fixing plates and one sides of the blades are fixedly mounted. According to the thread rolling machine, the movable tooth plate and the static tooth plate are matched to continuously move and roll out threads, meanwhile, the thread rolling screw passes through t