An assembly device and method for an aeroengine spline sleeve gear coupling

Abstract

The invention relates to an assembling device and method of a splined sleeve gear coupling of an aircraft engine. The structure of the device is shown in fig.1. The device mainly comprises a driving assembly (1), a housing assembly (2) and a spring bolt assembly (3). With the adoption of the device, the splined sleeve gear coupling of the aircraft engine can be safely and reliably assembled, and the engine is prevented from damage caused by assembling the structure through a general device; a device for indicating the rotating angle of a shaft end nut (4) is provided. The invention also relates to a method for assembling the splined sleeve gear coupling. With the adoption of the device and method, the assembling position of the shaft end nut (4) can be accurately determined; an inner bushing (5) spline can be smoothly sprung out from an inner spline of the shaft end nut (4) in one time. With the adoption of the method, the assembling efficiency of the splined sleeve gear coupling can be improved, and the assembling circle is reduced; and meanwhile the engine assembling quality is ensured; and the quality risk of damage of parts and assemblies of the engine in the splined sleeve gear coupling assembling process can be obviously reduced.

Description

technical field [0001] The invention belongs to the technical field of aero-engine assembly, and in particular relates to an aero-engine spline bushing gear coupling assembly device and method. Background technique [0002] The spline sleeve gear coupling structure is widely used in the industry due to its small number of parts, high structural reliability and light weight. However, the assembly and disassembly of the structure has always been a technical difficulty in the industry. Because the spring 6 needs to be kept in a compressed state during the assembly and disassembly process, the engagement splines of the shaft end nut 4 and the inner bushing 5 are separated at this time, and the shaft end nut 4 is rotated with a large torque to tighten or loosen it. Taking a medium-thrust engine as an example, the torque is generally between 1000N·m and 3000N·m. More adoption in the industry image 3 The shown front end has the device of spline and boss to realize the assembly a...

AI Technical Summary

Problems solved by technology

Due to the characteristics of the aero-engine industry, such as small production batches, high component manufacturing costs, long processing cycles, and small stock of spare parts, once structural damage occurs, the assembly and disassembly cycle of the engine will be greatly increased

For military engines in service, the extension of the overhaul cycle will seriously affect the integrity rate of military equipment and directly affect the combat effectiveness of aviation arms

In addition, in the existing method, because the circumferential position of the shaft end nut 4 cannot be seen during the assembly process, multiple attempts are required to make the splines of the inner bushing 5 pop out of the inner splines of the shaft end nut 4 smoothly, so the assembly efficiency lower

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