Realtime 3D simulation of 3-axis milling using isometric projection.
ABSTRACT The paper presents an efficient realtime simulator for 3-axis milling processes. In this system, solid modeling is performed using isometric projection with a z-map structure. As a result, all the solid elements are either fully exposed or fully hidden, and they are well arranged and symmetrical. These characteristics make visible surface determination for the raster display more efficient, and they reduce the memory requirements considerably. As a result, this efficient and realtime voxel-based model can simulate NC milling processes satisfactorily even in personal computers, without the aid of extra hardware devices or coprocessors. This simulation system will be useful to NC programmers and machining operators for identifying programs and checking gross programming errors visually.
Conference Proceeding: Development of a Software for Effective Cutting Simulation using Advanced Octree Algorithm[show abstract] [hide abstract]
ABSTRACT: The objective of this study is to develop the simulation software for numerical control (NC) machining. This paper presents the visualization and analysis of cutting process in slope machining by using advanced octree method. A software based on advanced octree algorithms has been developed and used as the basis in this study. The suggested algorithm with supersampling techniques in computer graphics used for developing the simulation software can improve efficiently the computation and visualization of cutting process, reduce memory waste, computation time and obtain high level of accuracy. The simulation results of cutting process in slope machining verified that the application of advanced octree model can overcome several limitations of decomposition model in term of achieving high level of accuracy in cutting simulation with fast computation time.Computational Science and its Applications, 2007. ICCSA 2007. International Conference on; 09/2007
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ABSTRACT: This paper attempts to propose a virtual operating system applied to operation training of manufacturing facility and manufacturing process simulation. The system is based on VRML and browser/server structure, so user only needs to install a free plug-in, and run the package normally via Microsoft Internet Explorer. Initially this paper studies the system framework, structure models and concept models. Then, a communication approach based on VRML, Java and HTML, which is key to realize the virtual operating of CNC machines, has been presented. The algorithm of material removed simulation based on VRML Z-map is also presented in this paper. It has the advantages such as a lower memory requirement, and a faster computation speed. Finally, in order to validate the feasibility of the proposed approach, the CNC milling machine has been taken as an illustrative example for the prototype development.Computers in Industry. 01/2009; 60:686-697.
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ABSTRACT: A method for boundary extraction of cutting area is presented. With this method, the compound surfaces are approximated by the Z-map model to address the issues regarding cutting area generation. The run-length code is constructed to represent the object area in each cutting layer. A boundary tracing algorithm extracts boundaries by sequentially linking nodes according to the connectivity information of runs. The formed boundaries are sorted and arranged in a boundary representation tree representing the topological structure of the cutting area in the cutting layer. The presented method, simple and effective, has the capability of automatic recognition of contours and islands. The experimental NC machining results demonstrate the feasibility of the algorithm.International Journal of Advanced Manufacturing Technology 01/2007; 33(9):1010-1016. · 1.21 Impact Factor