Main shaft rotating device

The utility model discloses a main shaft rotating device which comprises a mounting base, a motor is fixedly installed on one side of the top of the mounting base, a rotating main shaft is fixedly installed at the driving end of the motor, a rotating plate is fixedly installed at the top end of the rotating main shaft, and a fixing table is fixedly installed on the other side of the top of the mounting base. A limiting groove is formed in the top of the fixing table. According to the main shaft rotating device, the mounting base, the fixing table, the sliding block, the first movable column, a limiting rod, a limiting groove, a transmission plate, a second movable column, a rotating plate, a rotating main shaft, a limiting block, a stabilizing plate, a supporting plate, a motor, a sliding way, a rolling wheel and a groove are used in cooperation, and the rotating main shaft can drive the limiting block to rotate in the rotating process; rotation of the limiting blocks can drive the rolling wheels to roll on t