Graph-based heuristics for recognition of machined features from a 3D solid model
Computer-Aided Design
Efficient face-based feature recognition
SMA '93 Proceedings on the second ACM symposium on Solid modeling and applications
A graph-based framework for feature recognition
Proceedings of the sixth ACM symposium on Solid modeling and applications
A discourse on geometric feature recognition from CAD models
Journal of Computing and Information Science in Engineering
Feature Recognition from CAD Models
IEEE Computer Graphics and Applications
Spatial Reasoning for the Automatic Recognition of Machinable Features in Solid Models
IEEE Transactions on Pattern Analysis and Machine Intelligence
Geometric Reasoning for Extraction of Manufacturing Features in Iso-Oriented Polyhedrons
IEEE Transactions on Pattern Analysis and Machine Intelligence
Novel ANN-based feature recognition incorporating design by features
Computers in Industry
Sequencing of interacting prismatic machining features for process planning
Computers in Industry
Simulated rolling method for the recognition of outer profile faces of aircraft structural parts
Advances in Engineering Software
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This paper presents a new hybrid (graph+rule based) approach for recognizing the interacting features from B-Rep CAD models of prismatic machined parts. The developed algorithm considers variable topology features and handles both adjacent and volumetric feature interactions to provide a single interpretation for the latter. The input CAD part model in B-Rep format is preprocessed to create the adjacency graphs for faces and features of associated topological entities and compute their attributes. The developed FR system initially recognizes all varieties of the simple and stepped holes with flat and conical bottoms from the feature graphs. A new concept of Base Explicit Feature Graphs and No-base Explicit Feature Graphs has been proposed which essentially delineates between features having planar base face like pockets, blind slots, etc. and those without planar base faces like passages, 3D features, conical bottom features, etc. Based on the structure of the explicit feature graphs, geometric reasoning rules are formulated to recognize the interacting feature types. Extracted data has been post-processed to compute the feature attributes and their parent-child relationships which are written into a STEP like native feature file format. The FR system was extensively tested with several standard benchmark components and was found to be robust and consistent. The extracted feature file can be used for integration with various downstream applications like CAPP.