A tool for overall assembling
welding of an engine outer ring
assembly comprises a base plate, a positioning ring, a pressing plate, a main expansion block, an auxiliary expansion block, a pressing cover, a screw rod, a guide plate, a spring, a
rubber mat, a locking nut, an end cover nut, a shoulder nut, a guide column, a cone, a
pipe connecting
nozzle, an air guide
pipe and an air
nozzle. By means of the tool, two circular
welding seams of the engine outer ring
assembly and three groups of mounting seat
welding seams can be integrated in one device for limiting
machining, so that the number of tools required in the
machining process is greatly reduced, and the
machining cost is greatly reduced; meanwhile, one-time clamping machining is achieved, error accumulation caused by repeated clamping is avoided, clamping positioning is accurate, rapid and stable, dismounting is convenient and rapid, meanwhile, the
error prevention effect is achieved, the conditions of wrong mounting, neglected mounting and the like are avoided, and the machining efficiency is greatly improved; and in addition, the device can achieve manual welding and automatic welding expansion, and meanwhile the multi-application requirements of products are met.