Drilling machine with automatic positioning function

The utility model relates to the technical field of drilling machines, and discloses a drilling machine with an automatic positioning function, which comprises a supporting table, a first fixing plate fixedly connected to the side edge of the supporting table, a first sliding groove arranged in the first fixing plate, a sliding plate slidably connected in the first sliding groove, a second sliding groove arranged on the sliding plate and a second fixing plate fixedly connected to the sliding plate. A plurality of sets of teeth are fixedly connected to the second fixing plate, and a first fixing frame is fixedly connected to the side, away from the supporting table, of the first fixing plate. Compared with the prior art, the device has the advantages that the motor is started to drive the first connecting rod to rotate, so that the first rotating disc is driven to rotate, the first rotating disc drives the belt to move, the belt drives the second rotating disc to rotate, meanwhile, the second rotating disc dri