Semantic Intelligent Reasoning Method for Shape and Position Tolerance of Box Parts Based on Ontology
In order to solve the problem that the form and position tolerance semantics of box parts still rely on manual understanding,which leads to the difference of tolerance understanding and the inconsistency of measurement certification,ontology technology is introduced to realize the intelligent reasoning of form and position tolerance semantics of box parts.The semantic hierarchical representation model of form and posi-tion tolerance of box parts was constructed,and the adjacency matrix was used to represent the information or hierarchical relationship within the layer.It is transformed into a computer readable and interpretable me-ta-ontology model.According to the tolerance principle applied in geometric norms,the corresponding form and position tolerance semantics(tolerance zone or effective boundary)are deduced;Taking the geometric specification of reducer casing as an example,the automatic generation process of form and position toler-ance zone or actual boundary is shown,and the effectiveness of the method is verified.
ontologybox partstolerance semanticstolerance zone
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