Development Of 3D CAD And Research Of Virtual Assembly Of Electric Switch Cabinets

This project develops a three-dimensional CAD system module for electric switch cabinet.It is based on Unigraphics NX (UG NX) which is a integrated CAD/CAE/CAM software of UGS Corporation of American and Visual C++6.0 which is a classics programming software of Microsoft Corporation,The project has a further study in it by synthetically using a series of development methods and electric switch cabinet's serialized characters: complex structure, tight time limit for a project and big workload.The author has mainly carried on the following researches in this paper:Studied the solid modeling of UG NX thoroughly,including the application of solid modeling, express and Parameter-driven modeling. Studied Secondary development methods of UG NX, including UG/OPEN API, MenuScript and UIStyler. Studied the whole process of secondary development. Studied design and manufacturing process of electric switch cabinet. Studied the shape characteristics of mechanical standard parts as well as the development methods of parts library.Base on the above researches,the author brought forward the master design of electric switch cabinet CAD system; finished all modeling work of electric switch cabinet's parts by using the basic principles of feature model and parameterized design; designed and developed CAD software—electric switch cabinet CAD system. The system only demand users'basic operation of UG NX, fit to serialize designed products, and the design efficiency can be greatly promote by using this system. The system has the following features: simple interface, easy to use,favorable man-machine conversation,expandability,transplantation etc.