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Proceedings Paper

Study on measurement of leading and trailing edges of blades based on optical scanning system
Author(s): Bi Chao; Hongguang Liu; Longxiang Bao; Di Li
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Paper Abstract

In the field of aeronautics, the geometry and dimensional accuracy of the blade edges has a large influence on the aerodynamic performance of aero engine. Therefore, a non-contact optical scanning system is established to realize the measurement of leading and trailing edges of blades in a rapid, precise and efficient manner in the paper. Based on the mechanical framework of a traditional CMM, the system is equipped with a specified sensing device as the scanning probe, which is made up by two new-style laser scanning sensors installed at a certain angle to each other by a holder. In the measuring procedure, the geometric dimensions of the measured blade edges on every contour plane are determined by the contour information on five transversals at the leading or trailing edges, which can be used to determine the machining allowance of the blades. In order to verify the effectiveness and practicality of the system set up, a precision forging blade after grinded is adopted as the measured object and its leading and trailing edges are measured by the system respectively. In the experiment, the thickness of blade edges on three contour planes is measured by the optical scanning system several times. As the experiment results show, the repeatability accuracy of the system can meet its design requirements and the inspecting demands of the blade edges. As a result, the optical scanning system could serve as a component of the intelligent manufacturing system of blades to improve the machining quality of the blade edges.

Paper Details

Date Published: 24 October 2017
PDF: 8 pages
Proc. SPIE 10458, AOPC 2017: 3D Measurement Technology for Intelligent Manufacturing, 104580R (24 October 2017); doi: 10.1117/12.2283558
Show Author Affiliations
Bi Chao, Beijing Precision Engineering Institute for Aircraft Industry (China)
Hongguang Liu, Tianjin Institute of Metrological Supervision and Testing (China)
Longxiang Bao, Beijing Precision Engineering Institute for Aircraft Industry (China)
Di Li, Beijing Precision Engineering Institute for Aircraft Industry (China)


Published in SPIE Proceedings Vol. 10458:
AOPC 2017: 3D Measurement Technology for Intelligent Manufacturing
Wolfgang Osten; Anand Krishna Asundi; Huijie Zhao, Editor(s)

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