Automatic partition algorithm for profile feature machining of aircraft structural parts

被引：0
|
作者：
Gao X. [1 ]
Li R. [1 ]
Wang B. [1 ]
Li W. [1 ]
Zhao Z. [1 ]
机构：
[1] AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2021年 / 42卷 / 07期
关键词：
Aircraft structural parts; Automatic partition; Machining area division; Profile feature; Virtual boundary;
D O I：
10.7527/S1000-6893.2021.25346
中图分类号：
学科分类号：
摘要：
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. © 2021, Beihang University Aerospace Knowledge Press. All right reserved.
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