Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
Volume 224, Issue B2, Pages 271-278Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1243/09544054JEM1634
Keywords
feature recognition; holistic attribute adjacency graph; seed face; hint search; hint extension
Funding
- National Key Technology R&D Program, China [2006BAF01A43, 2007AA04Z135, YN0814]
- NNSFC (National Natural Science Foundation of China) Research [50905087]
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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.
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