Research On Modeling For Wire Harness Technological Graph

The rapid development of CAD modeling technology and the wide application of general CAD platform in wire harness technological design field for motor had paved the way for research on wire harness technological graph(WHTG)modeling. This dissertation does research on modeling for WHTG,under the analysis of different representations,classification of the information and summarization of the features for WHTG of many wire harness enterprises,which is based on the introduction of knowledge about wire harness technological design.To provide theoretical foundation and technical support for the application of CAD modeling in wire harness technological design field,this dissertation does further research for WHTG modeling with OO methods,which used the CAD modeling experience of many other fields for reference.The main contents include:1)Information classification and features summarization for WHTG.The information of WHTG is classified under the analysis of different representations for WHTG of many wire harness enterprises,which is based on different classification criterion.The formalization description of WHTG is given under the summarization of the features,including geometry simpleness, region assembly,local constrains,global constrains,and so on.2)Modeling for WHTG.The description of information below is presented, including geometry entity information,engineer and physical attributes,local constrains among components,global constrains in WHTG,and so on.A convenient interaction environment is established,based on modeling for operation information.Furthermore,the interface is designed for different representations of WHTG,and transplant on different CAD and database platform.3)System implementation and validation.The WHTG aided plotting module in wire harness aided design system is designed and implemented,considering the status of wire harness technological design and manufacture in many wire harness enterprises.The work of user is simplified,and the data for next steps in wire harness technological design is supported.The system has been used in wire harness design and manufacture,and comes into effect.