Cutting head for steel bar taper thread screw-threading machine

The utility model discloses a cutting head for steel bar taper thread screw-threading machine, comprising a flange plate and a tool post body. The tool post body is successively sheathed with a poke ring, a worm fixing ring, an active ring and a fixed ring from back to front; the front end of the tool post body is provided with a tool post; a comb-shaped tool is fixed on the tool post; the comb-shaped tool is tangentially arranged corresponding to the outer circumference of a processed steel bar; the bottom width of the comb-shaped tool is larger than the top width of the comb-shaped tool to form an included angle which is coincident with the cone angle of the processed steel bar. Using the utility model to process the steel bar, cutting force is small, the service life of a cutting tool is long, and processing cost is low.