Polishing device for inner runner of aviation case type part

The utility model discloses an aviation casing type part inner runner polishing device which comprises a working table, a V-shaped conveyor is fixedly installed on the top of the working table, a controller is fixedly connected to the front side of the working table, a limiting mechanism is arranged on the top of the working table, and a fixing frame is fixedly connected to the right side of the bottom of the working table. Through cooperation of the connecting block, the polishing disc, the mounting clamping frame, a second threaded rod, a first threaded plate and a limiting clamping block, polishing parts can be replaced conveniently, so that when parts of different models are machined, the parts can be disassembled and replaced quickly, the practicability of the equipment is improved, and the practicability of the equipment is improved. And through cooperation of a supporting frame, a second motor, a third threaded rod, a second threaded plate, a first electric push rod, a limiting clamping plate, a second