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

An aero-engine and rotor assembly technology, which is applied in the direction of measuring devices, electrical devices, optical devices, etc., can solve the problem of low assembly efficiency, inability to directly give the optimal assembly phase of the stage rotor, and failure to consider the influence of rotor assembly quality, etc. question

Inactive Publication Date: 2019-12-24
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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

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specific Embodiment 1

[0079] according to figure 2 and image 3 As shown, the present invention provides an aero-engine rotor assembly measurement device based on three-point weighing, said device comprising: a base 1, an air bearing shaft system 2, a load cell 3, a leveling and tilting platform 4, a hydraulic clamp Pan 5, left column transverse guide rail 6a, right column transverse guide rail 6b, left column vertical guide rail 7a, right column vertical guide rail 7b, left lower transverse measuring rod 8a, left upper transverse measuring rod 8b, right lower transverse measuring rod 8c, upper right horizontal measuring rod 8d, lower left telescopic inductive sensor 9a, upper left telescopic inductive sensor 9b, lower right lever inductive sensor 9c, upper right lever inductive sensor 9d and the measured rotor 10;

[0080] The air bearing shaft system 2 includes an air bearing upper plate 2a, an air bearing main shaft 2b, an air bearing lower plate 2c, a circular grating ruler 2d, a circular gra...

specific Embodiment 2

[0086] according to figure 1 As shown, the present invention provides a three-objective optimization method for aero-engine rotor assembly based on three-point weighing, comprising the following steps:

[0087] Step 1: For centering and tilting of the leveling and tilting platform 4, ensure that the centroid of the assembly reference plane is concentric with the rotation axis of the 4-axis system of the leveling and tilting platform, and ensure that the assembly reference plane is parallel to the plane of the leveling and tilting platform 4, so that The assembly reference is the bottom surface of the bottom rotor, the axis of rotation of the air bearing shaft system 2 is the Z axis, the intersection of the axis of rotation and the upper surface of the upper air bearing plate 2a is the origin of coordinates, and a straight line passing through the origin of coordinates and parallel to the base 1 is used is the X-axis, and the Y-axis is a straight line passing through the coordi...

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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...

Claims

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Application Information

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IPC IPC(8): G01B7/312G01B7/30G01B11/26G01M1/12B23P19/00B23P19/10
CPCB23P19/00B23P19/10G01B7/30G01B7/312G01B11/26G01M1/122
Inventor 陈越崔继文谭久彬
Owner HARBIN INST OF TECH
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