A four-point weighing-based aeroengine rotor assembly measuring device and a dual-objective optimization method

An aero-engine and rotor assembly technology, which is applied in the direction of measuring devices, electrical devices, optical devices, etc., can solve problems such as the inability to take into account the optimization of rotor unbalance, low assembly efficiency, and failure to consider the influence of rotor assembly quality.

Inactive Publication Date: 2020-08-07
HARBIN INST OF TECH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this method is that the influence of the quality characteristics of the rotor on the assembly quality is not considered, and the optimization of the rotor unbalance cannot be taken into account while the rotor misalignment reaches the 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 lacks a high-speed and effective optimization method to guide the assembly of aero-engine rotors to meet the rotor misalignment and unbalance indicators at the same time. Significantly improve the assembly efficiency and one-time assembly pass rate of aero-engine rotors

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A four-point weighing-based aeroengine rotor assembly measuring device and a dual-objective optimization method
  • A four-point weighing-based aeroengine rotor assembly measuring device and a dual-objective optimization method
  • A four-point weighing-based aeroengine rotor assembly measuring device and a dual-objective optimization method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0069] according to figure 2 and image 3 As shown, the present invention provides an aero-engine rotor assembly measurement device based on four-point weighing, which includes: a base 1, an air bearing shaft system 2, a load cell 3, a centering and tilting workbench 4, a hydraulic Chuck 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 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 rotor 10 to be tested, the air bearing shafting 2 Installed on the center point of the base 1;

[0070] The air bearing shaft system 2 includes an air bearing upper plate 2a, an air bearing main shaft 2b, an air b...

specific Embodiment 2

[0076] according to figure 1 As shown, the present invention provides a kind of bi-objective optimization method of aero-engine rotor assembly based on four-point weighing, comprising the following steps:

[0077] Step 1: Adjust the centering and tilting of the centering and tilting table 4, ensure that the centroid of the assembly reference plane is concentric with the rotation axis of the 4-axis system of the centering and tilting table, and ensure that the assembly reference plane is flat with the centering and tilting table 4 Parallel, so that the assembly reference is the bottom surface of the bottom rotor, the rotation axis of the air bearing shaft system 2 is the Z axis, the intersection of the rotation axis and the upper surface of the air bearing upper plate 2a is the coordinate origin, and the coordinate origin is crossed and transverse to the base 1 The parallel straight line is the X-axis, and the straight line passing through the coordinate origin and perpendicula...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an aero-engine rotor assembly measuring device based on four-point weighing and a dual-objective optimization method. The method comprises the steps of determining angular positioning of a turntable based on a circular grating; ensuring that, based on a centering and tilting device, the measurement and assembly of the concentricity, parallelism, and center of mass coordinates of a measured rotor are performed under the same reference; extracting, based on a four-probe measuring device, a concentricity error of a radial assembly surface and a parallelism error of an axial assembly surface of each stage of rotor, respectively; extracting, based on a four-point weighing measuring device, radial coordinates of the center of mass of each stage of rotor; and obtaining, based on a rotor assembly posture transfer model, an optimal assembly angle of each stage of rotor by genetic optimization taking the coaxiality and offset of the center of mass of the rotor assembly asdual optimization objectives. The device can effectively solve the problem that the coaxiality and the imbalance of the aero-engine rotor after assembly are over standards, and has the characteristics of integrated measurement of rotor geometry and quality characteristics, high one-time assembly qualification rate, and reduction of 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 dual-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 misalignment and rotor unbalance are the two major causes of aero-engine failures. How to realize the synchronous optimization of rotor misalignment and unbalance in the assembly stage is a key common technical problem that has plagued the aero-engine manufacturing industry at home and abroad for a long time. [0004] At present, research teams at home and abroad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/312G01B7/30G01B11/26G01M1/12B23P19/00B23P19/10
CPCB23P19/00B23P19/10G01B7/30G01B7/312G01B11/26G01M1/122
Inventor 崔继文陈越谭久彬
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap