一种基于非完整点云数据的航空发动机叶片边缘半径获取方法

doi:10.3969/j.issn.1000-1158.2023.04.06

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Abstract The non-contact measurement technology does not rely on the original design model of the blade and quickly obtains the key geometric parameters of the blade, but the point clouds obtained in the area of high curvature of the edge of the blade are sparse and scattered, so that it is difficult to obtain the radius of the leading edge of the blade. In order to solve this problem, a method to obtain the leading edge radius of blade based on incomplete point cloud data is proposed. In this method, the contours of leaf basin and leaf back are obtained by point cloud segmentation, and the leaf edge arc tangent to leaf basin and leaf back is obtained by dichotomy approximation method. Compared with the results obtained by measuring the blade edge radius by the contact CMM, the deviation is less than 30%, which is in line with the expectation.This method can improve the point cloud distortion of non-contact measurement of high curvature surface to a certain extent, and provides a useful reference from the rapid reconstruction of blades.

Key words： metrology front and rear edges of the blade incomplete point cloud data ;non-contact measurement point cloud segmentation parameter acquisition

Received: 03 November 2021 Published: 18 April 2023

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TB92

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	Articles by authors
	CAO Guo-qiang
	GUO Xu
	YE Chang-long
	DING Jian

Cite this article:

CAO Guo-qiang,GUO Xu,YE Chang-long, et al. A Method for Obtaining Edge Radius of Aeroengine Blade Based on Incomplete Point Cloud Data[J]. Acta Metrologica Sinica, 2023, 44(4): 527-533.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2023.04.06 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2023/V44/I4/527

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