Conduit closing-in clamp and closing-in method

Abstract

The invention discloses a conduit closing-in clamp and a closing-in method, belonging to the technical field of aero-engine manufacturing and machine manufacturing. The clamp comprises a first lining sleeve closing-in clamp and a second lining sleeve closing-in clamp, wherein the first lining sleeve closing-in clamp comprises a barrel, a mold block, a lining barrel and a sleeve; the outer surface of the mold block corresponds to the inner surface of the lining barrel; the inner surface of the mold block corresponds to the outer surface of the first lining sleeve; the inner surface of the lining barrel corresponds to the outer surface of one end of the barrel; a plug cover is arranged at the other end of the barrel; the second lining sleeve closing-in clamp comprises a barrel, a mold block, a lining barrel, a sleeve and a protecting sleeve; the outer surface of the mold block corresponds to the inner surface of the lining barrel; the inner surface of the mold block corresponds to the spherical surface of the second lining sleeve; the inner surface of the lining barrel corresponds to the outer surface of one end of the barrel; a plug cover is arranged at the other end of the barrel; and a through hole in one end of the protecting sleeve corresponds to the cylindrical surface of the second lining sleeve. According to the method disclosed by the invention, the protecting sleeve is adopted to control the deformation of the cylindrical surface and an adhesive tape is adopted to control the periphery deformation so as to prevent the surface damage of a plated layer.

Description

technical field [0001] The invention belongs to the technical field of aero-engine manufacturing and mechanical manufacturing, and in particular relates to a pipe closing fixture and a closing method thereof, which are suitable for the closing connection requirements of high-precision parts. Background technique [0002] Closing connection is one of the basic processes in the tube manufacturing process, and this process is widely used in the manufacture of aero-engine tubes; but for the closing connection of high-precision parts, there is a problem of out-of-tolerance parts after the closing connection. For example, in the production of the external oil return pipe of the rear bearing, the size design of the sphere is relatively strict, and the tolerance is only 0.047mm; and the surface of the bush is silver-plated, and the deformation of the sphere cannot be repaired. Grinding and repairing will damage the silver layer, and the silver layer of the bush cannot be damaged in t...

AI Technical Summary

Problems solved by technology

[0002] Closing connection is one of the basic processes in the tube manufacturing process. This process is widely used in the manufacture of aero-engine tubes; however, for the closing connection of high-precision parts, there is a problem of out-of-tolerance parts after the closing connection

For example, in the production of the external oil return pipe of the rear bearing, the size design of the sphere is relatively strict, and the tolerance is only 0.047mm; and the surface of the bush is silver-plated, and the deformation of the sphere cannot be repaired. Grinding and repairing will damage the silver layer, and the silver layer of the bush cannot be damaged in the assembly Electroplating and repairing caused the size of the sphere to be out of tolerance, and a large number of parts were scrapped

Closing with the existing closing method cannot meet the design requirements of high-precision parts, so it is an urgent problem to be solved to study a new closing fixture and closing method

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