Multi-size cylindrical part assembling device

The utility model belongs to the technical field of automatic assembly of parts, and particularly relates to an assembly device for multi-size cylindrical parts. The device comprises a positioning bottom plate, a first sliding rail arranged longitudinally, a second sliding rail arranged transversely, a sliding groove plate, an opening sliding plate, a first positioning cylinder, a second positioning cylinder, a threaded support and a top plate. The first positioning barrel is driven by the air cylinder to move on the first sliding rail, and the second positioning barrel is driven by the air cylinder to move on the second sliding rail; the top plate is installed above the working table top through four threaded supports with threads at the two ends, and a synchronous wheel driven by a servo motor is installed below the top plate, so that the synchronous wheel drives the top plate to move up and down; a plurality of staggered hydraulic cylinders are further installed on the bottom face of the top plate, hydraul