Boring centering mechanism of environment-friendly equipment metal vertical milling machine

The utility model discloses a boring centering mechanism of a metal vertical milling machine of environmental protection equipment, which comprises a mounting block, a connecting shaft fixedly arranged at the bottom of the mounting block, a bearing sleeved at the bottom of the outer wall of the connecting shaft, a turntable fixedly arranged on the outer wall of the bearing, a gear ring fixedly arranged at the edge of the top of the turntable, and a mounting rod fixedly arranged on one side of the connecting shaft. A motor support is fixedly arranged at one end of the mounting rod, a driving motor is fixedly arranged at the top of the mounting support, a transmission gear is arranged at the output end of the driving motor, the transmission gear is meshed with the gear ring, and the driving motor rotates to drive the transmission gear, the gear ring and the telescopic rod to rotate so as to drive the mounting support and the lever indicator to rotate; by means of the method, the function that the lever indicato