Cutting head for hard rock tunneling

The invention belongs to the technical field of tunneling machines, and discloses a cutting head for hard rock tunneling. The cutting head for hard rock tunneling comprises a cutting head body, cutting teeth are fixedly installed on the cutting head body, a cavity is formed in the bottom of the cutting head body, a cooling mechanism is arranged in the cavity, the cooling mechanism comprises a communicating pipe, and the communicating pipe is arranged in the cavity. According to the cutting head for hard rock tunneling, through the design of the cooling mechanism, when the cutting head body conducts tunneling, high-flash-point lubricating oil can be rotationally sprayed to the rock surface and the cutting teeth, the temperature of the cutting teeth can be effectively reduced, the cutting lubricating effect is enhanced, and the service life of the cutting head is prolonged. The cutting head body and the cutting teeth have good service life and better use effect, and meanwhile, the high-flash-point lubricating o