Research On Data Process Of STL Model On Welding Rapid Prototyping

Not including CAD, the software system in RP has to import another file which has so many errors.Thus, error diagnosis and correction tool plays an important role in software.Departing from the introduction of our metal direct rapid prototyping system including the deposit hardware platform and the prototyping software, the investigation of the error diagnosis and correction of STL model exported from CAD, this paper makes a study of the 3D graphics vision system based on the OpenGL, integrated of geometry shaping theory in CAD thus then designs and realizes one tool of error diagnosis and correction of STL model. Also the relative algorithms have been researched.Firstly,some relevant theories of the fusion welding rapid prototyping and its data process technology are introduced in this paper .Also it gives some analysis to the present condition of the error diagnosis and correction of STL model exported from CAD based on the theories and some current errors diagnosis and correction tool.Secondly,exhausts some conception of OpenGL vision display technology,which is a popular graphics software interface widely used in graphics system. After that, the advantage and application of them in building systems will be introduced.Finally,according to the actual requirement of fusion welding craftwork,we hold out the project's design of error diagnosis and correction of STL model, including system total configuration, design model, model distribution and each model's function.At the same time, emphasize the topological information build algorithm between points and edges, between facets and points also between facets and edges. It decreases complexity of model processing; improve the speed of loading STL model. The most importance is that it provide the efficient method dealing with the diagnosis and correction of STL model on topological information between geometry entity.