Method for assembling wheel disc and shaft in large interference fit in non-detachable rotor

Abstract

The invention discloses a method for assembling a wheel disc and a shaft in large interference fit in a non-detachable rotor. The method comprises the following steps: (1) a wheel disc component (1) and the shaft (2) are placed on a precision rotary table, the wheel disc component (1) sleeves the shaft (2), and the midline of the shaft (2) is perpendicular to a positioning surface (111) of the wheel disc component (1). The method for assembling the wheel disc and the shaft in large interference fit in the non-detachable rotor breaks through technical difficulty of large interference assembly in blind assembly, realizes assembly of a low-pressure compressor rotor, lowers influence of artificial factors, improves the assembly efficiency and the assembly quality, realizes gradual conversion of engine component assembly from traditional manual operation to intelligence and is wider in application range and convenient to popularize.

Description

technical field [0001] The invention relates to the technical field of disk shaft assembly methods, and in particular provides a large interference fit disk shaft assembly method in a non-detachable rotor. Background technique [0002] With the increasing development of domestic aero-engine technology, aero-engines with different functions in various fields are constantly being introduced. The design structure of the new low-pressure rotor of the engine will be widely used in modern aero-engines. The design of the rotor with this new structure Angle considerations also add more stringent new assembly technology requirements. Traditional aero-engine low-pressure rotors mostly adopt a disc-and-drum two-stage structure, and the material is made of stainless steel. The matching precision of parts and components requires a small interference connection. The emergence of this new structure of low-pressure rotors poses new challenges for rotor assembly. [0003] Over the years, th...

AI Technical Summary

Problems solved by technology

The original press-fitting method is only suitable for small interference fit between two parts. For the new structure rotor with large interference fit of the multi-stage disk shaft assembly, the original manual press-fitting assembly method is still used, which increases the Assembly controllability risk, it is not suitable to ensure that the design puts forward new assembly requirements. In order to realize the assembly of the new rotor disk shaft, a new assembly process method must be studied to meet the assembly requirements of the disk shaft

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