The working principle of the hand-stacked tooth rubbing machine is based on the principle of wire rubbing, that is, using two identical pieces, the wire rubbing surface has the same spiral angle as the bolt thread. When the wire rubbing boards move each other, the bolt blank between the two wire rubbing boards is rubbed out the thread. There are helical tooth marks on the tooth plate, and the tooth distance is equal to the tooth distance of the thread to be obtained, and the angle of the tooth mark is equal to the tooth lifting angle of the thread. Place the machining part in the middle of the two tooth plates and add a force distance equal to the tooth height to rub it, and the required thread can be processed.