The Development Of Feature Recognition And Quick Reconstruction System For Digital Model Based On NX

In the manufacture of electron beam fuses,the electron beam fuse additive manufacturing process requires a series of processes from the design model to the STL production model due to various factors such as digital structure characteristics,solidification shrinkage,and forming accuracy during the workpiece stacking process.The model is reconstructed to meet the characteristics of the electron beam additive manufacturing process,so that the workpieces that meet the requirements of subsequent machining and actual use can be obtained in actual production.Traditional model reconstruction methods can only be modified by hand,which is time consuming,labor intensive,and inefficient.The 3D CAD software is used to assist the model processing,and the typical structural features of the electron beam fuse additive manufacturing parts are characterized,and the parameters are extracted and reconstructed,which can realize the rapid and accurate reconstruction of the design model.However,the general 3D CAD software does not provide a dedicated digital-to-analog reconstruction module,which requires secondary development based on the software platform.Based on current status,this paper uses UG NX 10.0 as the development platform and C/C++ as the development language.Under the Visual Studio 2012 environment,the UG secondary development technology is used to develop the digital model feature recognition and quick reconstruction system to realize the electron beam fuse.Adding material manufacturing digital model feature extraction,and the function of digital model quick reconstruction.The main work includes:(1)System master plan.Based on the analysis of logarithmic model reconstruction requirements,the system structure,function modules and design flow are determined anddivided based on the UG secondary development framework,and the human-computer interaction interface is designed.(2)The construction of the digital model reconstruction feature library.On the basis of the research work of various structural features in the process of digital model reconstruction,the basic methods of feature description and feature recognition are studied to achieve the purpose of feature recognition and extraction.(3)Development of digital model reconstruction function.Based on the feature recognition result of the feature library,the feature parameters are extracted,and different types of features are reconstructed according to the rules.For individual complex features,the fast reconstruction function is realized and the efficiency is improved.Based on the above work,the digital-analog feature recognition and quick reconstruction system developed can realize rapid digital-analog reconstruction and can be applied to the digital-analog reconstruction process of electron beam fuse additive manufacturing..The use shows that the use of digital-analog reconstruction system greatly shortens the cycle of digital-to-analog reconstruction process and improves the standardization of digital-analog reconstruction design.