Machining device and method for double-layer casing of aero-engine

Abstract

The invention discloses a machining device and method for a double-layer casing of an aero-engine. The device comprises an end surface gland, a shell, an inner sleeve, movable tensioning blocks, an air bag, a supporting rod, supporting arm nuts, supporting arms, a connecting seat, a ball head guiding rod, an inner hole fixing claw, an outer stand column, a transverse top head and a pressing plate.A turning and milling compound machining method is adopted, when an inner hole and an end surface are turned, the mode that an outer supporting is matched with the air bag for tensioning is adopted,and when an outer boss is milled, the mode that an inner supporting is matched with the air bag for tensioning is adopted; and according to the machining device, the high-quality and high-efficiency machining of the similar thin-wall double-layer casing can be achieved, and it is ensured that the circular degree of the casing meets the requirement.

Description

technical field [0001] The invention relates to a manufacturing method and device for a thin-walled double-layer casing in an aero-engine, in particular to a clamping and supporting method and device in casing processing. Background technique [0002] As the main component of the aero-engine, the casing is divided into integral ring casing, split ring casing, radial plate ring casing, etc. according to the structure. According to the material, it is divided into superalloy casing, titanium alloy casing, stainless steel casing, Aluminum alloy casings, etc., are divided into forging casings, casting casings, welding casings, sheet metal casings, etc. according to the manufacturing process; due to the complex structure, thin wall, and difficult processing of materials of advanced aero-engine casings, the structure is double-layer , the welding process is difficult, and the machining allowance is large. After the casing is processed, there are different degrees of residual stres...

AI Technical Summary

Problems solved by technology

[0003] The processing of double-layer casings, especially thin-walled barrel-type double-layer casings, is difficult to achieve by traditional machining methods, and the processing efficiency is low

For this kind of parts, although the processing requirements can be met by ordinary processing methods, this will inevitably increase the processing cost, the efficiency is low, and a series of problems caused by the deformation of the parts cannot be avoided.

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