Rotary drum type automatic polishing machine

The utility model relates to mechanical equipment for conducting surface treatment on parts such as a rotary drum and the like, belonging to the technical field of the mechanical equipment. The rotary drum type automatic polishing machine is characterized by comprising a base, wherein an idler wheel is fixed on the base, the idler wheel is provided with the rotary drum, a track of the rotary drum is clamped on the idler wheel, the rotary drum is internally provided with a wear-proof lining plate, the wear-proof lining board is provided with a spiral material guiding board; and two ends of the rotary drum are respectively provided with a material charging door and a material discharging door. The rotary drum type automatic polishing machine has large treating quantity, can infinitely adjust the speed according to the requirement of a polished work piece, can realize the mechanical material charge and the automatic material discharge, is safe, environment-friendly, high in work efficiency and good in product qu