Doubling thread surface flatness detection equipment

The utility model discloses a doubling thread surface flatness detection device. Fixing plate, the upper surface of the fixing plate is fixedly connected with a vertically-arranged supporting rod. Theends, away from the fixing plate, of the supporting rods are rotationally connected with rotating rods through first damping rotating shafts. The end, away from the first damping rotating shaft, of the rotating rod is rotationally connected with a threaded sleeve through a second damping rotating shaft. The inner wall of the threaded sleeve is provided with an internal thread, a protective shellis inserted into the threaded sleeve, the outer side wall of the upper end of the protective shell is provided with an external thread matched with the internal thread, and the inner wall of the protective shell is fixedly connected with a vertically-arranged magnifying camera. The utility model relates to doubling thread production equipment, which is characterized in that a convex lens is matched with an amplification ca