Gear cold extrusion processing device

The utility model relates to a gear machining technical field discloses a gear cold extrusion processing device, including frame, upper die base, fix die holder and motor in the frame, the both sidesthreaded connection of upper die base have with spiral shell rasp bar, one of them spiral shell rasp bar's one end is connected with the die holder rotation with the output shaft fixed connection of motor and the other end, still be fixed with the guide arm on the upper die base, the bottom of guide arm is fixed with the terrace die, the die holder is equipped with the guide way, is equipped withdown the die in the guide way, and the bottom of lower die is equipped with the through -hole, and the below of through -hole is equipped with closed pole, the die holder is fixed with the pneumatic cylinder, and the output shaft and the closed pole fixed connection of pneumatic cylinder, die holder are equipped with the air cavity, and one side of air cavity is equipped with the check valve thatadmits air, and the opposit