Hobbing of hardened tooth surface gear

The utility model relates to the technical field of gear machining, and discloses a hardened tooth face gear hobbing which comprises a shell, a rotating disc is arranged on the shell in a rotating mode, a hobbing blank is arranged on the rotating disc, a gear hobbing mechanism and a rotating mechanism are arranged on the shell, and the gear hobbing mechanism is used for conducting hobbing machining on the hobbing blank. The rotating mechanism is used for driving the gear hobbing blank to rotate so as to complete gear hobbing in a matched mode. A cooling mechanism is further arranged on the shell and comprises a first supporting seat arranged on the shell, a water pipe is arranged on the first supporting seat, and a spray head is arranged on the water pipe; according to the hardened face gear hobbing, the multiple annularly-distributed spray heads are adopted for covering the contact face of the hobbing blank and the hobbing cutter with cooling liquid in a spraying mode, the spraying area is enlarged through r