Saw blade positioning device for tooth grinding machine

The utility model discloses a saw blade positioning device for a tooth grinding machine. The saw blade positioning device comprises a saw blade clamp and an eccentric vibration mechanism, wherein the saw blade clamp is installed on the tooth grinding machine slidingly, and the eccentric vibration mechanism comprises a base fixedly connected with the saw blade clamp and a vibration motor installed on the base. In working, the vibration motor generates a high amplitude and a low amplitude to drive the saw blade clamp to vibrate on the tooth grinding machine. When a saw blade passes under a sand wheel, the same saw tooth portion of the saw blade is contacted with the sand wheel of the tooth grinding machine for twice continuously due to the eccentric vibration effect of the eccentric vibration mechanism, and the tooth shape of the saw blade can be processed once compared with the prior art which needs to perform tooth grinding twice. The saw blade positioning device for the tooth grinding machine is reasonable i