Integrated high-precision polishing rotary table

The utility model relates to the technical field of ultra-precision optical machining, in particular to an integrated high-precision polishing rotary table which comprises a supporting assembly, a workbench, a connecting assembly, a transmission assembly, a protection assembly and a sealing assembly, the supporting assembly comprises a supporting frame and a supporting plate, and the connecting assembly comprises a supporting bearing, a first connecting shaft and a second connecting shaft. The transmission assembly comprises a servo motor, a planetary reducer and a driver, the protection assembly comprises an outer protection cover and an inner protection cover, and the sealing assembly comprises a bearing seat sealing piece, a table top sealing piece and a shaft sealing piece. The polishing rotary table in the scheme can replace an original torque motor transmission mode and an original belt pulley transmission mode, semi-closed-loop angle control can be achieved, a band-type brake, cooling and an adjusting