Aero-engine rotor assembly measuring device and three-target optimization method based on three-point weighing

Abstract

The invention relates to an aero-engine rotor assembly measuring device and three-target optimization method based on three-point weighing. Based on a four-head measuring device, a concentricity errorof the radial assembling surface and a parallelism error of the axial assembling surface of each stage of rotor are extracted; based on a three-point weighing measuring device, radial coordinates ofthe centroid of each stage of rotor are extracted; based on a rotor assembly attitude transmission model, an optimal assembly angle of each stage of rotor is obtained through genetic optimization by taking the coaxiality, the unbalance amount and the rotational inertia of a rotor assembly as three optimization targets; and based on a torsion rod measuring device, the rotational inertia of the longitudinal axis of the assembly is obtained. The device and the method can effectively solve the over-standard problem of the coaxiality, the unbalance amount and the rotational inertia of the assembledaero-engine rotor, and have the characteristics of integrated measurement of rotor geometry and mass characteristics, high one-time assembly qualification rate and reduced engine vibration.

Description

technical field [0001] The invention relates to the technical field of mechanical transfer, and relates to a three-point weighing-based aeroengine rotor assembly measuring device and a three-objective optimization method. Background technique [0002] Aeroengines are the most precise and complex rotating machinery in contemporary industry. Assembly technology is the final process stage in the engine manufacturing process, especially the core components typically represented by high-pressure compressor rotors. The assembly quality directly affects the high-speed operation stability of the engine. sex. [0003] Rotor coaxiality, rotor unbalance and excessive moment of inertia are all important causes of aero-engine failures. How to realize synchronous optimization of rotor coaxiality, unbalance and moment of inertia in the assembly stage has long plagued the aero-engine manufacturing industry at home and abroad. key common technical issues. [0004] At present, research team...

AI Technical Summary

Problems solved by technology

The problem with this method is that the influence of the mass characteristics of the rotor on the assembly quality is not considered, and the optimization of the rotor unbalance and moment of inertia cannot be taken into account while the rotor coaxiality is up to standard.

The problem with this method is that the optimal assembly phase of the rotors at each stage cannot be directly given, and the assembly position can only be fitted layer by layer according to the rotor shape and position tolerance. Assembly position fitting, low assembly efficiency

[0006] At present, the domestic engine rotor assembly technology still largely depends on the operator's skill level and experience, and there is a lack of a high-speed and effective optimization method to guide the assembly of aero-engine rotors to meet the requirements of rotor coaxiality, unbalance and moment of inertia at the same time. indicators, greatly improving the efficiency of aero-engine rotor assembly and the pass rate of one-time assembly

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