With the continuous innovation and improvement of the manufacturing industry,the importance of the multi-material 3D printing process is becoming more and more obvious.The multi-material modeling technology is the core module of the 3D printing process.A multi-material 3D printing modeling method based on the secondary development of UG was proposed in this study.First of all,the existing 3D modeling software UG(Unigraphics NX)was used to create a 3D model of the parts to be printed.By using the enclosing box principles and intersection algorithms,the material space micro-differentiation of the 3D model was achieved.Secondly,UG was selected to add color to its single or local small cubes.The color information through the color material mapping table mapped to the material information and output multi material model text file.Finally,the 3D model was imported into the material space,and the multi-material parts that meet the functional and appearance requirements were printed.This modeling method can provide reference for the research of multi-material 3D printing modeling technology.
Multi-material partsUGBounding box principleGeometric spaceMaterial space