Elastic algorithm for calculating rotor assembly pose based on end jump measurement

Abstract

The invention discloses an elastic algorithm for calculating a rotor assembly pose based on end jump measurement. A rotor matching surface is equivalent to a plurality of micro-convex body contact pairs; the contact elastic deformation is calculated by using a Hertz contact rule, contact pairs which actually contact with each other are separated; the final contact state is judged through the energy and torque balance equation, the normal vector of the contact plane is finally solved to represent the contact pose, the rotor assembly pose prediction accuracy is improved, the assembly coaxialitycan be well reflected, and rotor assembly phase prediction and optimization are better achieved. The method is based on actually measured end hop data in actual production; elastic deformation generated in the assembly process is considered; the method has the advantages that the defects of a rigid prediction algorithm are overcome, the accurate prediction of the assembly pose before assembly is realized, the rotor coaxiality after assembly is improved, meanwhile, the one-time assembly qualification rate is greatly improved, and the method has important practical guiding significance for axisprediction and assembly phase adjustment and optimization in the assembly process of the aero-engine rotor piece.

Description

technical field [0001] The invention proposes an elastic algorithm for calculating the axis pose of rotor assembly, which can be applied to axis prediction and assembly phase optimization in the assembly process of important components such as aeroengine high-pressure compressor rotors, high-pressure turbine discs, and low-pressure rotor assemblies. , During the assembly guidance process. Background technique [0002] In the assembly process of high-precision aero-engine components, it is necessary to ensure the coaxiality after assembly. Since "trial and error" assembly requires repeated trial assembly and deployment, in order to improve assembly efficiency, reduce costs, and improve the assembly accuracy of rotor components, it is necessary to accurately predict and optimize the phase before assembly. Therefore, to improve the success rate of an assembly, it is necessary to seek the relationship between the runout shape before assembly and the axis deflection after assemb...

AI Technical Summary

Problems solved by technology

[0004] A common flaw of these prediction algorithms is that they assume rigid stacking and do not take into account actual contact deformation

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