Development, The Components Of The External Gear Pump Parametric Cad System Based On Solidworks

Along with the coming of information times and economic globalization, many mechanical manufacture enterprises must have the ability of quick development and innovation if they want to survive and develop in the severe market competition. It has been proved that three-dimensional CAD technology plays a prominent part in accelerating product development, improving product quality and reducing cost. It also is an effective measure to strengthen the competence of product innovation and enhance the market competition.Outer-tooth Gear Pump is widely used in hydraulic system because of simple structure, low manufacture cost, work reliability etc. As its strong solid modeling and good practicability, SolidWorks has been the first choice during choosing three-dimensional design software. Because the products of enterprise have been serial, it is very important to develop a three-dimensional parameterized CAD system combined with feature modeling technology on the basis of redevelopment of SolidWorks.The target of this article is to develop a three-dimensional parameterized CAD system of the parts of Outer-tooth Gear Pump. The work that the author has done mainly includes several aspects as followed:(1) The technology of redevelopment of SolidWorks, which includes the principle of redevelopment, the methods of redevelopment and the tools of redevelopment, has been deeply explored.(2) The technology of mechanical three-dimensional solid modeling is entirely expounded, and it also establishes the design thought of feature-based parameterized design combined with the technology of feature modeling and parameterized design.(3) A three-dimensional parameterized CAD system of the parts of Outer-tooth Gear Pump has been designed with Visual Basic6.0. Many aspects of system development are expounded in detail.(4)The parameterized design program of parts has been set up with the methods of dimension drive and program drive, and it also realizes management of the design information with database technology.The target of designing this system is to deeply study actual application of the redevelopment technology of SolidWorks, and also have value to be referenced in the development of special CAD system of other product.