Research And Realization On The Remote Regeneration Technology Of NC Machining 3D Scene

The objective of this dissertation is to characterize the realization technologies of the reality -based 3-D scene remote regeneration system (RBTSRRS) under network environment, focusing on the engineering application, the structure, modeling of RBTSRRS, and the STL-based deforming algorithm of work piece, which are put into reality in the project of developing the EView remote monitoring and controlling system for Jiujiang Rectifier Factory.At first, the open structure model of RBTSRRS is established. An open RBTSRRS is a web-based remote monitoring and controlling service platform managing and scheduling the 3-D scene model resources and devices, through which, specific RBTSRRS is reconstructed to meet with the different user requirements, this system has three features: the opening for resources, territory, and data collecting interface.Secondly, the software structure of an RBTSRRS can be developed and reconstructed in two layers: the reconstructing of graphic model resources block and 3-D scene displaying. With the help of the reusable structure model of graphic subsystem and the function units developed by OOP technique, which envelops graphic resource subsystem, the re-utility of software module is improved greatly, and the design of RBTSRRS gets easier.Thirdly, the research involves in the retrieving and transferring technique of 3-D scene characteristic parameter, elaborates the principle of 3-D scene characteristic retrieving (TDSCR), which provides the reality-based data resource of 3-D scene and proposes MSML (the Machine Tool Simulation Markup Language), a kind of data transferring medium, to transfer the 3-D scene characteristic information from the processing location. The organic combination of TDSCR, MSML and Internet, the physical connection of remote transfer, forms the data driving system of RBTSRRS, which provides a feasible measure for the establishment of 3-D scene.In addition, a deforming algorithm of cutting work piece in RBTSRRS is addressed. The deforming of work piece in cutting process is key point of RBTSRRS. The utility of STL which ,as the factual model standard for RP manufacture service, is a file format interface protocol widely used, and Open GL (Open Graphic Library) ,which is the industry standard for 3-D graphic displaying and scene disposing under all kinds of software platforms, in the re-construction of the virtual NC machining scene results in good compatibility. The research focuses on the distinguishing and storage algorithm of STL file format, the triangle algorithm of work piece model facets and the re-construction algorithm of the STL substantiality model based on Open GL.Finally, the key reality techniques of remote monitoring system developing platform and the typical steps of scheduling and running monitoring system are delivered. Using VC++ as basic tool, a remote monitoring system developing software is developed, which , by means of real example, is introduced as an application for 3-D scene scheduling and running monitoring system, this remote monitoring system, which adopts a data-centered structure in order to improve the flexibility and re-usability, is the important application of RBTSRRS. Moreover, the research designs and develops the prototype system of 3-D scene remote regeneration system.