The invention belongs to the technical field of flat drills, and discloses a three-blade efficient drilling wood
drill and a manufacturing method thereof.The wood
drill comprises a rod body, three blade plates are fixedly connected to the upper end of the rod body, the three blade plates are distributed in a circular
equidistant array mode, and protruding blade heads are arranged on the sides, away from the rod body, of the tops of the blade plates; a transverse
cutting edge is formed in the top of the
blade plate, and a
polishing cutting edge is formed in the side, away from the rod body, of the
blade plate. By means of the three blade plates which are distributed in a circular
equidistant array mode,
cutting contact points are increased, the protruding blade heads at the tops of the blade plates are matched to rapidly pierce the
surface layer of wood, the transverse cutting effect of the transverse cutting edges is achieved, the drilling time is greatly shortened, the positioning head arranged on the cone is matched with tapping threads, accurate positioning is achieved, slipping is not prone to occurring, and drilling deviation is avoided; the three blade plates are uniformly stressed, and the
polishing effect of the
polishing cutting edges on the sides, away from the rod body, of the blade plates on the hole wall is combined, so that burrs are reduced, and the drilling roundness and the
surface smoothness are improved.