Signature Mdt Platform Based On The Mechanical Parts Of The Group Technology Research And Development

Group Technology(GT) is a course of product technology science,it resourch that how to disentomb and identify the comparability of some things in the product activity,and use the comparability serve the product. It's basic means is the best scheme of resolve a group similar problem. When Group Technology is used in the machine process, the part is sorted to comparability part group by form character comparability and technics or manufacture comparability.The methods of sort part group have many ,part classified coding is in many use in the mechine design ,it include design attribute and manufacture attribute. Using the design attribute of part classed coding class part, the parts having same coding have same or similar form feature and maching technics.Contemporaneity CAD system use the idea of feature design,the feature is parametric to convenient for later editor. MDT(mechanical desktop) Autodesk provided is completely parametric three dimension mechanical design software system based feature design. ObjectARX(AutoCAD Runtime extension)is one of develop tool of MDT, it is second develop environment faced to object and application interface. It include a group Visual C++ class library and a group dynamic link library, And ARX application wizard is installed in the VC environment, using the ARX application wizard to establish arx application frame.and adding application code to the arx application,arx application is created after compiled by VC,arx application may be load in the MDT. Arx visit directly figure system core and create new command and extend system function. MCAD API(Autodesk Mechanical Application Programming Interface)is a application interface tool,it is a function collection,its parameter is class object, it support feature's establish, looking up.editor and so on funtion.The article resourch deeply the part class code system of Group Technology and CAD software based feature design and corresponding develop tool, and bring forward the basic idea of establish the machine part feature library based Group Tehcnoly in the MDT platform, using Visual C++,ARX class library and MCAD API second develop tool to realize the establish,manage,using of feature library. The feature library use part classified coding to express the basic feature of part and as the parameter of feature library looking up and transfering, the feature library may add,modify,look up,transfer feature,and run well in the MDT environment.The feature library improve the design efficiency of part, ameliorate the design quality.and easy to the unification of CAD/CAM/CAPP.