Positioning and punching device for flange machining

The utility model discloses a positioning perforation device for flange processing, which comprises a base station, a pneumatic chuck, a perforation mechanism and an electric cylinder, the pneumatic chuck is arranged at the upper end of the base station, a positioning seat for fixing is arranged at the bottom of the pneumatic chuck, the perforation mechanism is arranged above the pneumatic chuck, and the electric cylinder is arranged above the perforation mechanism. Wherein the perforating mechanism is composed of a hollow disc, a drill bit, a connecting arm, an X-shaped rotating frame and a rotating arm, the rotating arm is fixedly connected with a transmission shaft of the driving motor, the protective cover is arranged outside the perforating mechanism, the driving motor is sleeved with a guide sleeve, and supporting arms used for being connected with the supporting frame are arranged on the two sides of the guide sleeve. The multi-hole punching machine is reasonable in structure, easy to operate, capable