Inspection of thin-walled blade profile considering curvature characteristics and machining deformation Online publication date: Fri, 13-Dec-2024
by Jingwen Lao; Sitong Xiang; Hainan Zhang; Ben Yu; Jianguo Yang
International Journal of Mechatronics and Manufacturing Systems (IJMMS), Vol. 17, No. 3, 2024
Abstract: Thin-walled blades are prone to machining deformation, while the traditional inspection method does not consider the machining deformation. This paper proposes an inspection method of the blade based on curvature characteristics and machining deformation. According to the curvature and machining deformation, the blade is divided into different sections and areas. In each area, the chord deviation method is used but the chord deviation value and the amount of sampling points are optimised according to the proportions of machining deformation of each region. Compared with traditional methods, the overall fitting maximum and average deviation of the blade is reduced by 37.5% and 16.3%, meanwhile the amount of sampling points is reduced by 18.8%. The proposed method matches the blade curvature characteristics and the machining deformation, and improves the efficiency and accuracy of inspection.
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