Articolo in rivista, 2022, ENG, 10.14733/cadaps.2022.896-912

Enhancing Product Semantics Understanding Through Automatic Part Type Recognition in CAD Assembly Models

B. Bonino, F. Giannini, M. Monti and R. Raffaeli

DIME, Universitá degli Studi di Genova, Italy; IMATI, Consiglio Nazionale delle Ricerche, Italy; DISMI, Universitá degli Studi di Modena e Reggio, Italy

Focus of this work is the recognition of the standard parts contained in a CAD assembly model, with the aim of enhancing the model semantics. Standard parts are components typically used in mechanical industry, which have a specificc engineering meaning and follow international standards. In particular eight categories of standard parts are considered, i.e. screws, nuts, O-ring, washers, circlips,keys, studs and pins. The provided algorithm relies on the geometric and topological analysis of the CAD model parts. A part is assigned to one of the categories if it satisfies the geometric requirements extracted for that specific category, based on engineering knowledge and design rules. In addition, if a part is recognized as standard part, besides the class of membership, further information is provided as result, namely its engineering dimensions.

Computer-Aided Design and Applications 19 (5), pp. 896–912

Keywords

CAD Model Processing, Type Recognition, Part Classication, Standard Part Detection, Assembly Semantics

CNR authors

Bonino Brigida, Monti Marina, Giannini Franca

CNR institutes

IMATI – Istituto di matematica applicata e tecnologie informatiche "Enrico Magenes"