Polishing device for quartz stone processing

The utility model relates to the technical field of quartz stone polishing, and discloses a polishing device for quartz stone processing, which comprises a quartz stone polishing device, the quartz stone polishing device comprises a polishing box and a quartz stone block, and an inner cavity of the polishing box is provided with a turnover mechanism. According to the polishing device for quartz stone machining, a quartz stone block is placed in the middle of a clamping plate, then a fourth motor is started to drive a second screw rod to rotate, the second screw rod rotates to drive a threaded block to move, the threaded block moves to drive the clamping plate to move, and the clamping plate moves to clamp the quartz stone block; and a third motor is started to drive a rotating shaft to rotate, the rotating shaft drives a rotating plate to rotate, and the rotating plate rotates to drive a clamping plate and the quartz stone to rotate, so that the quartz stone is turned over under the condition of stable clampi