Polishing tool for light guide plate machining

The utility model discloses a polishing tool for light guide plate machining. Polishing device comprises a polishing box, the tops and the bottoms of the two ends of the polishing box are provided with a first hydraulic cylinder, a second hydraulic cylinder and a polishing disc correspondingly. Linear sliding tables are mounted on output shafts of the first hydraulic cylinder and the second hydraulic cylinder; a vacuum suction cup is installed on a sliding table of the linear sliding table, one end of the air suction pipe communicates with a dust removal box, breathing paper is installed in the dust removal box, the top of the dust removal box communicates with a vacuum pump, a water pipe is installed in the polishing box, and the lower side of the water pipe communicates with a spray head. According to the utility model, the first hydraulic cylinder drives the vacuum chuck on the linear sliding table to adsorb the light guide plate; the linear sliding table drives the light guide plate to move on the surface