A manufacturability analysis method for sheet metal based on rule reasoning

Abstract

Sheet metal parts are the fundamental components for realizing the structural characteristics of aircraft, and their design efficiency and quality directly influence the cost and performance of products. Currently, many aviation enterprises rely on experiential methods to inspect the design quality of parts, leading to challenges such as inconsistent inspection specifications, low efficiency and a high likelihood of errors. To address these issues, a manufacturability analysis method for sheet metal part is proposed based on rule reasoning. Firstly, the topological information of sheet metal part is classified and combined according to geometric characteristics and its topological relationships, and the topological face set of the features is constructed. Secondly, the manufacturing feature recognition methods based on rule reasoning is proposed, and standardized information models are established based on these manufacturing features. Subsequently, the manufacturability rules are established based on the process criteria in the actual processing requirements. The attribute information contained in the design model is compared with the process rule information to identify the attributes that do not comply with the processing requirements. Finally, a manufacturability evaluation software system for aircraft sheet metal part is developed, and several typical parts containing various concave features are successfully tested.