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Aero-engine blade intake and exhaust edge shape detection method

An air intake and exhaust edge, aero-engine technology, applied in image data processing, instruments, calculations, etc., can solve problems such as low blade detection efficiency

Pending Publication Date: 2021-09-14
HUST WUXI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for detecting the edge shape of an aeroengine blade intake and exhaust, which solves the problem of low blade detection efficiency in the related art

Method used

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  • Aero-engine blade intake and exhaust edge shape detection method
  • Aero-engine blade intake and exhaust edge shape detection method
  • Aero-engine blade intake and exhaust edge shape detection method

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Embodiment Construction

[0061] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0062] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments of some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0063] It should be noted that the terms "f...

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Abstract

The invention relates to the technical field of aero-engine blade detection, and particularly discloses an aero-engine blade intake and exhaust edge shape detection method, which comprises the steps of obtaining blade profile contour theoretical point cloud data, blade profile contour actual measurement point cloud data and a deviation value of a blade; performing curve fitting according to the theoretical point cloud data of the blade profile to obtain a theoretical blade profile curve and a theoretical blade profile mean camber line, and performing curve fitting according to the actually measured point cloud data of the blade profile to obtain an actually measured blade profile curve and an actually measured blade profile mean camber line; performing calculating according to the theoretical blade profile curve and the theoretical mean camber line to obtain a front edge theoretical vertex and a rear edge theoretical vertex; performing calculating according to the actually measured blade profile curve and the actually measured mean camber line to obtain a front edge actually measured vertex and a rear edge actually measured vertex; calculating a front edge actual measurement vertex curvature radius and a rear edge actual measurement vertex curvature radius; and comparing and judging the front edge shape and the rear edge shape of the blade. According to the aero-engine blade intake and exhaust edge shape detection method provided by the invention, the defect detection efficiency of the blade is improved.

Description

technical field [0001] The invention relates to the technical field of aeroengine blade detection, in particular to a method for detecting the edge shape of an aeroengine blade intake and exhaust. Background technique [0002] The blade is one of the important components of an aero-engine, and the shape of its intake and exhaust edges (leading edge and trailing edge) has a great influence on the aerodynamic performance of the engine. The shape of the leading / trailing edge of the blade is generally designed as a circular arc or an elliptical arc. In the actual production process, due to the influence of the processing technology, the leading / trailing edge of the blade often takes an unideal circular arc shape. In item 6.6 on page 21 of the standard HB5647-1998 "Blade Airfoil Marking, Tolerance and Surface Roughness of Blade Body", the "leading / trailing edge arc shape control" is specifically defined. The shape of the leading / trailing edge, the smoothness of the transition be...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/12G06T7/13G06T7/136
CPCG06T7/0004G06T7/13G06T7/12G06T7/136G06T2207/10028G06T2207/30164Y02T90/00
Inventor 李大力陈雷张旭王婧雯
Owner HUST WUXI RES INST
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