Working principle of the tooth rubbing machine and the difference between it and tapping machine

Teeth rubbing machineWorking principle: When processing helical tooth marks on the tooth plate, the tooth distance is equal to the distance of the thread to be obtained. The angle of the tooth marks is equal to the angle of the thread to lift the thread. Place the machining part between the two tooth plates and add the force distance equal to the height of the tooth. Rub it to process the thread you want.
The working principle of wire rubbing: two pieces are the same, and the wire rubbing surface has the same spiral angle as the bolt thread. When the wire rubbing plates move each other, the threads are rubbed out of the bolt blank between the two wire rubbing plates. The wire rubbing plate is processed one bolt thread at a time, and the speed is quite high. Wire rubbing is mostly used for small bolt processing. Summary: teeth rubbing is the processing of the outer surface of the cylindrical workpiece.
A tapping machine refers to threading the inner wall of the hole; its function is to make threads. The working principle of making the corresponding bolts or screws can be connected to them is 2 pieces. The threading surface has the same tooth shape as the bolt thread and the same spiral angle as the bolt thread. When the threading plates move each other, the threading plates are rubbed out the threads. The threading plate is processed one bolt thread at a time, and the speed is quite high. Wire rubbing is mostly used for small bolt processing. Summary: Tapping is the processing of the empty inner wall, and the threading is the processing of the outer surface of the cylindrical workpiece.
The tooth rubbing machine uses two identical pieces, and the thread-scrubbing surface has the same tooth shape as the bolt thread, and the thread-scrubbing machine is used to rub the bolt blank between the two thread-scrubbing boards out of threads when the thread-scrubbing board moves to each other. The tooth rubbing board is processed one bolt thread at a time, and the speed is quite high. The tooth rubbing is mostly used for small bolt processing.