Three-dimensional Solid Parts Of Feature-based Modeling Software Development And Research

CAD ( Computer Aided Design )is the application of the computer in the course of designing of technology. Designing and manufacturing automation era of high development nowadays, CAD technology gets fast development and extensive application, and becomes the indispensable handling tool in each design trade.Based on Visual C++ design platform, this paper adopts object-oriented method to design and develop the sofeware of 3D solid modeling. And its purpose is exploring the design software with perfect function high efficiency and reliable capability , as well as according with habits of project designers of our country.The technology of feature modeling is the result that the artificial intelligence technology applies to CAD. The product information that it expresses is not only complete but also contains the abundant semanteme information, which makes the technology of feature modeling the essential and effective foundation of system integration of CAD/CAE/CAM/PDM.This paper is based on 3D feature modeling software systematic frame of JhSolid, and it regards 3D entity modelling kernel of Parasolid as the exploring platform, uses OpenGL as the figure interface. During this period, this subject has mainly developped three basic function of feather modeling: Rotate, Swept and Loft, and feather modeling method of standard part including Flat key, Spline, Gear, Sprocket and Belt pulley function.Worked out by the procedure, debugs and test repeatedly, it has verified that this procedure has succeeded in realizing above-mentioned functions, which prove the correctness and feasibility of this method.