Method for testing assembly performance of rotor of aircraft engine

Abstract

The invention discloses a method for testing the assembly performance of a rotor of an aircraft engine, which comprises the following steps of: firstly exciting and vibrating a rotor of an aircraft engine with a vibration exciter; obtaining a multiple carrier-coupled impulse response signal of the rotor of the aircraft engine with a vibrating sensor and signal-acquiring system software; analyzing the obtained multiple carrier-coupled impulse response signal of the rotor of the aircraft engine by means of dual-tree complex wavelet transform to obtain eight signal carrier-coupled impulse response signals of the rotor of the aircraft engine; and distilling the average assembly performance index of the obtained eight signal carrier-coupled impulse response signals of the rotor of the aircraft engine, wherein the assembly performance of the rotor of the aircraft engine is judged to be qualified if the obtained average assembly performance index is larger than or equal to 10, and the assembly performance of the rotor of the aircraft engine is judged not to be qualified if the obtained average assembly performance index is less than 10, so that the rotor needs to be repaired.

Description

technical field [0001] The invention belongs to the field of aero-engine manufacturing, and in particular relates to a method for detecting the assembly performance of an aero-engine rotor. Background technique [0002] Assembly is the last link of product manufacturing, and the quality of product assembly determines the final quality of the product to a large extent. In order to ensure that the specified structural strength, aerodynamic performance and other indicators are achieved after assembly, aero-engines have very high requirements for assembly accuracy. However, due to the similar models and specifications of aero-engine rotor parts, a large number, complex structure and shape, and complex assembly processes, and the current engine assembly is mainly manual, the assembly accuracy and assembly quality are mostly dependent on the assembly workers' operating experience and experience. Proficiency, which makes the success rate of one assembly very low, resulting in mult...

AI Technical Summary

Problems solved by technology

However, due to the similar models and specifications of aero-engine rotor parts, a large number, complex structure and shape, and complex assembly processes, and the current engine assembly is mainly manual, the assembly accuracy and assembly quality are mostly dependent on the assembly workers' operating experience and experience. Proficiency, which makes the success rate of one assembly very low, resulting in multiple rework and rework, seriously affecting the quality and efficiency of aero-engine assembly

At present, due to the lack of automatic methods and advanced technologies for effectively testing the assembly performance of aero-engine rotors, the assembly performance of aero-engine rotors can only be indirectly reflected during the test run of the aero-engine after the complete assembly of the aero-engine. The evaluation results obtained about the assembly performance of aero-engine rotors are poor in accuracy, long in time and costly

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