Parametric Design Of Automotive Components

Now foreign automobile part industry is developing in order to decrease the period of designing new product, improve technology composed in product, universalize, reduce cost and increase electronical technology, which has a high level in scientific management, automatic design and global market. To the contrary, automobile part industry in our country has lagged behind and doesn' t have the ability to supply complete parts for automobiles made in China, especially cars. China' s ability to compete with international Automobile industry is weak. Many aspects lag behind other developed country for at least several ten years, for example science and technology strength, sale achievement, technology composed in products, corporation management scale and labor ratio. Our country has entered WTO. Foreign corporations, which produce automobile and automobile parts, is stepping into our country' s automobile and automobile parts market. Although as a developing country, we have 5 years protection transition period. Considering future and now, we must take powerful measures to improve abilities to tap product and to compete with international automobile part industry.Base on a commercial software-AutoCAD, we develop the automated gearbox designing system, and realized the parametric feature based design of the circumrotation parts in gearboxes. Both the design methods about the interface the guiding the user' s design and the data system in the gearbox design are also introduced.AutoCAD is tapped by using ObjectARX 2000 in the thesis and applied program ARX is tapped in the programming environment of Microsoft Visual C++ 6. 0. The thesis not only realizes that parts of gearbox is automatically created by parameters, but also breaks through the limits in the three-dimension shaping of AutoCAD, so that a feasible method is supplied, by which three-dimension model can be created quickly.