Automatic feeding and discharging structure of numerical control gear hobbing machine

The automatic feeding and discharging structure of the numerical control gear hobbing machine comprises a cylinder, a groove is formed in the cylinder, a threaded rod is arranged in the groove, one end of the threaded rod is connected with a connecting block in a rotating mode, and the end, away from the connecting block, of the threaded rod penetrates through the outer wall of the cylinder. The threaded rod is connected with the cylinder through threads, a first sliding rod is hinged to the outer wall of the connecting block, a sliding sleeve is slidably connected to the end, away from the connecting block, of the first sliding rod, a supporting rod is hinged to the outer wall of the sliding sleeve, and one end of the supporting rod is fixedly connected with the interior of the groove. The connecting block is arranged at one end of the threaded rod, the threaded rod can drive the first sliding rod to move by adding the connecting block, the sliding sleeve can swing by adding the supporting rod, the movement