Research On The Virtual Simulation Of Complex Curve Surface Process

As the development of modern industry such as aerospace and automobile industry, the research on complex curved surface is going in greater depth day by day. The modeling of tradtional curved surface is not fit for development of modern industry because of their long design and manufacturing circle, low precision of manufacture, inferior coordination. Trying to cut with the wax model, and verifying NC program make the debugging so long and the cost too high. But computer performance rapid enhancing, computer graphics and picture processing technology become the new domain. Furthermore, the simulation of modeling manufacture has formed the new domain of modeling manufacture. Virtual Manufacturing is the essential embodiment of the actual manufacturing process with the simulation and virtual display technology of computer, and it makes designers observe the processing path and effect directly from CRT.This thesis pays the emphases on the research of the virtual simulation of complex curved surface process on the basis of concluding and summarizing the status quo of domestic and overseas virtual manufacturing, and introduces the modeling of complex curved surface and the application of OpenGL (Open Graphics Library) under the environment of Visual C++6.0. On these conditions, this article discusses the roughcast modeling, cutting tool modeling and NC program translating and editing. And it also establishes the system of the virtual simulation of complex curved surface process in order to vertify the correctness of NC program, reduce the cost and time of trial-manufacture, enhance the efficiency , and avoid many phenomenon such as cutting too lot or few, interference and so on.·To analyze the description of complex curved surface, the essentiality of simulation technology and its domestic and overseas status quo.·To propose the different complex curved surface modeling method, emphatically to analyze the NURBS (Non-Uniform Rational B-Spline) curved surface modeling.·To realize the virtual simulation of complex curved surface process with the roughcast and cut modeling by OpenGL, the demonstration by double buffers technology and the automatically translation and edit of NC program by GAPT(Graphic Automatically Programmed Tools).