Aviation engine blade profile measuring method

An aero-engine and measurement method technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of inability to obtain surface information, unsuitable for blade measurement, and high measurement cost

Active Publication Date: 2016-07-06
CIVIL AVIATION FLIGHT UNIV OF CHINA
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Problems solved by technology

First, based on single-point high-precision measurement methods, such as the three-coordinate method, some studies use methods to improve the design of auxiliary measuring tools and measurement paths for measurement. This type of measurement method has high measurement accuracy, but its existing problems are: The measurement efficiency is low, the measurement cost is high, and all surface i

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  • Aviation engine blade profile measuring method
  • Aviation engine blade profile measuring method
  • Aviation engine blade profile measuring method

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Embodiment Construction

[0059] The present invention is the measurement method of aeroengine blade profile, at first, this measurement method is based on a measurement system (disclosed prior art), see figure 1 As shown, the measurement system includes computer A, binocular industrial cameras (B1, B2), projector C, turntable D and positioning plane E. Among them, the computer A is used to control the actions of the turntable D, the projector C and the binocular industrial cameras (B1, B2), and the corresponding data processing program is provided on the computer A, and the measurement data collected by scanning is processed through the processing program. deal with. The projector C is used to project the structured light onto the object to be measured on the turntable D—the blade F (ie, the blade of the aeroengine). The binocular industrial cameras (B1, B2) are used to capture the deformed fringe pattern generated by the projection of the projector C onto the measured object-blade F. The positionin...

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Abstract

The invention discloses an aviation engine blade profile measuring method. The measuring method is based on a measuring system. The measuring system comprises a computer, a binocular industrial camera, a projector, a turntable and a positioning plane. The measuring method comprises the steps of: calibrating the integral system; positioning the turntable with a positioning plane serving as a reference; fixing the blade on the turntable; projecting blue structured light to the measured blade by the projector; respectively capturing deforming stripes by the binocular industrial camera; performing phase resolving and matching and obtaining blade point cloud data of once measurement; automatically controlling the turntable by a program on the computer; repeating the projecting, capturing and solving processes, and obtaining 360-degree multi-view-angle measuring data of the blade; using a positioning quaternion and a rotating center to calculate the measured data; and automatically completing splicing of the blade profile and obtaining a complete fused data of the blade profile. The aviation engine blade profile measuring method has the advantages that the measuring precision is high and the measuring efficiency is high.

Description

technical field [0001] The invention relates to the measurement technology of blade profiles, in particular to a method for measuring the profile of aeroengine blades. Background technique [0002] The blade is the core component of an aero-engine, and the measurement technology of its profile is an important step in operations such as reverse engineering, quality inspection, blade design, and maintenance guidance. Therefore, the measurement technology of the aero-engine blade profile has always been researched hotspot. [0003] At present, measurement techniques for aeroengine blades are generally divided into two categories. First, based on single-point high-precision measurement methods, such as the three-coordinate method, some studies use methods to improve the design of auxiliary measuring tools and measurement paths for measurement. This type of measurement method has high measurement accuracy, but its existing problems are: The measurement efficiency is low, the me...

Claims

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Application Information

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IPC IPC(8): G01B11/25G01B11/24
CPCG01B11/2433G01B11/2522
Inventor 魏永超黎新傅强赖安卿敖良忠王瀚艺赵伟
Owner CIVIL AVIATION FLIGHT UNIV OF CHINA
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