Transactions of Materials and Heat Treatment

Title：Extraction technology of precision forged aeroengine blade profile parameters based on the second development of UG

Authors： Wang Yihong Lyu Yanming Liu Zetao Liu Dongshuai Yang Hua

Unit： Jiangnan University

KeyWords： blade profile parameters aeroengine blade the second development of UG parameter extraction least square method

ClassificationCode：V263.1

year,vol(issue):pagenumber：2020,45(3):197-202

Abstract：

For the practical requirements for extracting the characteristic parameters for precision forged aeroengine blade profile, the extraction technology based on the second development of UG was proposed, and the detection of the blade profile was mainly aimed at the various cross-section parameters of blade, such as the front and back edges, the chord length and the maximum thickness of the blade profile. Then, for the characteristics of front and back edges for the blade profile, the contour fitting was conducted by the least square method with restraint, and for the chord characteristics, based on the principle of coordinate transformation, the chord length and angle were solved by the projection method. In view of the characteristics for middle arc, the method of inscribed circle was adopted to solve the problem, at the same time, the center position of the inscribed circle was extracted, and the maximum thickness of the blade profile was obtained. Finally, for a certain type of blade, the extracted data with the theoretical blade profile parameter values were compared to verify the accuracy of the technology. Thus, the extracted profile data provides theoretical support for the parameters needed for the measurement path planning, measurement data registration and line contour error evaluation.

Funds：

国家自然科学基金资助项目(61409230303)

王溢鸿（1992-），男，硕士研究生 E-mail：2424233659@qq.com 通讯作者：吕彦明（1966-），博士，教授，硕士生导师 E-mail:lvyanming126@126.com

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