Grinding device capable of conducting double-face grinding and used for motor shaft production and machining

The utility model discloses a polishing device capable of polishing two sides for producing and processing a motor shaft, which comprises a bottom plate, side columns are fixed on two sides of the upper end of the bottom plate, connecting blocks are arranged at the upper ends of the side columns, pressing blocks are arranged on the connecting blocks, a motor shaft is arranged between the pressing blocks on two sides, and a first motor is arranged in the connecting blocks. A power shaft of the first motor is a rotating shaft, the rotating shaft extends out of the connecting block and is connected with the rotating disc, the first motor drives the pressing block to rotate, meanwhile, the electric telescopic rod can drive the pressing block to move left and right, and the position of the motor shaft is limited; the second motor drives the two-way lead screw to rotate, so that the two-way lead screw drives the internal thread blocks on the two sides to move oppositely and reversely, and the arc-shaped grinding bl