The utility model discloses a cylindrical
metal packaging
tin inner and outer wall
polishing device which is characterized in that a transmission groove is formed in the middle of a base, four driving grooves are evenly distributed in the periphery of the base, driving lead screws in the grooves are meshed pairwise through gears in the transmission groove to achieve synchronous rotation, and a
polishing assembly is driven to move in the horizontal direction; and the
polishing requirements of inner and outer walls of tanks with different diameters are met. A transverse plate on the stand column is driven by a stand column motor and a lead screw to vertically move, and the height of the suction cup rotating
assembly is adjusted to adapt to different tank heights. The suction cup rotating
assembly adsorbs and fixes the tank body through an
air pump, an air cylinder drives an extending block to be matched with a
threaded rod, constant-speed rotation of the tank body is achieved, and full-circumferential automatic polishing is completed by combining positioning of a polishing plate. A central axis channel of the
threaded rod optimizes the gas path
layout, and the adsorption stability is ensured. According to the device, efficient switching and
machining of polishing of the inner walls and the outer walls of tanks of different specifications are achieved through linkage transmission and height adjustment, and the production efficiency and the equipment universality are improved.