High-rigidity high-precision boring and milling power head

The high-rigidity and high-precision boring and milling power head comprises a shell, a connecting box is fixedly installed on the top of the shell, a driving motor is fixedly installed on the right side of the connecting box, the output end of the driving motor is connected with a rotating shaft, a driving belt wheel is fixedly installed on the outer surface of the rotating shaft, and a driving shaft is fixedly installed on the driving belt wheel. The outer side of the driving belt wheel is connected with a belt, the inner side of the other end of the belt is connected with a driven belt wheel, the inner side of the driven belt wheel is connected with a main shaft, the right side of the driven belt wheel is provided with two first bearings, and the two first bearings are fixedly installed on the outer surface of the main shaft. A second bearing is arranged on the right side of the first bearing, and one end of the spindle is connected with a mounting head. According to the high-rigidity and high-precision bo