飞机结构件轮廓特征加工自动分区算法

doi:10.7527/S1000-6893.2021.25346

Abstract

Abstract: The profile feature of aircraft structural parts is connected with aerodynamic shapes, which contains a large number of complex surfaces. The process pad is mostly used for clamping, which results in numerous factors to be considered in profile feature programming. In the automatic programming mode, programming of profile features still relies heavily on manual labor, and the programming time of profile feature accounts for more than 40% of the whole programming time of the aircraft structural part. To address this problem, an automatic algorithm for profile feature partition considering the complex surface and interference objects information is proposed in this paper. First of all, the profile features are initially partitioned based on convex edge constraints and properties of connection edges between adjacent profile surfaces. Then, the virtual boundary is constructed based on the information of interference objects. The horizontal and longitudinal machining regions of the initial partition results are divided based on the virtual boundary. Finally, the partition results for profile feature machining are obtained by combining the divided regions. An automatic partition system for profile features of aircraft structural parts is developed based on the proposed method. Testing of many structural parts shows that the proposed method is stable and reliable, and can provide support for profile feature programming.

Key words: aircraft structural parts, profile feature, virtual boundary, machining area division, automatic partition

CLC Number:

V262.3⁺3

GAO Xin, LI Renzheng, WANG Binli, LI Weidong, ZHAO Zhonggang. Automatic partition algorithm for profile feature machining of aircraft structural parts[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(7): 625346-625346.

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Automatic partition algorithm for profile feature machining of aircraft structural parts

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