A four-point weighing-based aeroengine rotor assembly measurement device and three-objective optimization method

Abstract

The invention relates to an aeroengine rotor assembly measuring device based on four-point weighing and a three-target optimization method. The method comprises the following steps of respectively extracting concentricity error of the radial assembly surfaces and parallelism error of the axial assembly surfaces of various stages of rotors based on a four-measuring head measurement device; respectively extracting centroid radial coordinates of various stages of rotors the measurement device based on four-point weighing measurement device; based on a rotor assembly pose transfer model, serving the coaxiality, amount of unbalance and rotational inertia of the rotor assembly as three optimization targets, and obtaining the optimal assembling angle of various stages of rotors through genetic optimization; and obtaining a longitudinal axis rotational inertia of the assembly based on a torsion bar measurement device. The overproof problems of the coaxiality, amount of unbalance and rotationalinertia after assembling the aeroengine rotor can be effectively solved, and the measurement device has the features of realizing integrated measurement of geometric and mass characteristics of the rotor, being high in one-time assembling qualification rate, and reducing engine vibration.

Description

technical field [0001] The invention relates to the technical field of mechanical transfer, and relates to a four-point weighing-based aeroengine rotor assembly measurement 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 tea...

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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