Feature recognition technology for aircraft structural parts based on a holistic attribute adjacency graph

Abstract A feature-recognition method based on an holistic attribute adjacency graph is put forward to solve the problems that complex features of aircraft structural parts find difficult to recognize by traditional feature-recognition methods. Extending the attribute's information and adding n...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part B, Journal of engineering manufacture Journal of engineering manufacture, 2010-02, Vol.224 (2), p.271-278
Main Authors: Li, Y G, Ding, Y F, Mou, W P, Guo, H
Format: Article
Language:English
Subjects:
Aeronautics
Aircraft
Aircraft components
Algorithms
Aviation
CAD
Component parts
Composite materials
Computer aided design
Control systems
Feature recognition
Graph algorithms
Machining
Micromachining
Searching
Topology
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Summary:Abstract A feature-recognition method based on an holistic attribute adjacency graph is put forward to solve the problems that complex features of aircraft structural parts find difficult to recognize by traditional feature-recognition methods. Extending the attribute's information and adding node types based on a traditional attribute adjacency graph, the method not only represents freeform surfaces and edge features, but also describes geometric information of topology elements precisely and completely. Combining feature recognition based on a graph with that based on hint, the method can deal with feature recognition of freeform surfaces, edge features, intersecting features, and convex features by a uniform algorithm, which virtually performs hint search, hint extension, and feature combination with hints of seed faces. According to the research, an original system has been used in a numerically controlled machining process of integer frame parts in certain large aviation enterprises.
ISSN:0954-4054
2041-2975
DOI:10.1243/09544054JEM1634