Study And Development Of Multi-position Progressive Die Structure Design System Based On UG

Progressive die, one of the main type of stamping die has the feature of complex，high-precision and high-productivity．Currently, the design and manufacturing technologylevel of stamping die is relatively backward in domestic, unable to meet requirements of themarket very well. The production efficiency can be increased several times or even dozens oftimes by means of multi-position progressive die CAD system, and it also reducetime-wasting caused by human error. The faults that caused by human errors can be reducedby using progressive die CAD system, which plays a important role in realizing refinementand efficient during progressive die design. The research project is supported by “High-levelTalents of Higher Education of Guangdong Province”(No.x2jqN9101140)-“Research onPrecise Design Technology of Multi-position Progressive Die of High Strength SteelAutomotive Structural Parts”, and “Production, Teaching&Research Collaborative Projectbetween Guangdong Province and Ministry of Education ofChina”(No.2010B090400094)-“Virtual Manufacturing and Industrial Application of HighStrength Steel Multi-position Progressive Die”.The structure of progressive die is the main research object of this paper, thedevelopment method of progressive die CAD system was obtained by using Visual C++andsecondary development tools of UG. Hiberarchy-based assembly restriction model is used todiscribe the progressive die in UG. This paper puts forward a new method to establishstandard parts of progressive die based on UG/MoldWizard module. Mold plate divisionfunction was developed based on the feature of multi-position progressive die. Working partsdesign module was developed by using database technology and UDF technology. The CADsystem was used to design a automotive soleplate component part to test the practicality. Themain research contents and conclusions of this paper are summarized as follows:(1) The key technology of the secondary development method based on UG. Thesoftware structure and function structure of multi-position progressive die structure designsystem were established based on parameter driving and associated design technology of UG,considering features of the progressive die designing as well as the design method of structureand components.(2) Research status of the assembly model as well as the demand of multi-positionprogressive die structure designing were analysed in this paper. A constraint assembly modelbased on level structure of multi-position progressive die was achieved based on the research on the assembly mechanism of UG. Assembly model of multi-position progressive die wasdescribed in UG environment. This assembly model describes the components and theirassemble relations successfully，and can effectively support multi-position progressive diestructure design．Based on the research developed the multi-position progressive die setsdesign module by using UG OPEN/UIstyler、UG OPEN/Menuscript、UG OPEN API andVisual C++.(3) The library of standard part for progressive die CAD system was built in this paperafter analysising several building methods of standard parts library; and the examples how tobuild standard parts, standard part group and standard assembly based parameterizationmodeling, parameterization skech, expression technology were described in detail. It wouldreduce the time of by developing standard parts library.(4) Mold plate divition function of multi-position progressive die designing applied inactual situation was developed in this paper based on the UG clone function and assemblydesign method; algorithm was derived to determine the position and demention of the dividedmold plate. The user defined features were called programmatically, a module for thestructural design of working parts based on user defined feature was developed. This modulecontains the common structure of working parts at the same time. The efficiency and qualityin designing the structure of working parts can be enhanced greatly by adapting this module.(5) The research result was used to design the progressive die of automotive soleplatecomponent part. The result showed, the system met the requirements of the progressive diedesigning.