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本文讨论了一套虚拟数控铣削几何及物理仿真系统,提出了仿真系统的总体框架,建立了几何模型和物理仿真模型,分析了铣削加工过程中的影响因素,并建立了各种标准件库,进行了加工参数优化,实现了虚拟数控几何仿真与物理仿真的集成。 相似文献
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本文评述了虚拟制造技术和三维数控仿真的含义和发展,结合虚拟制造技术对数控仿真系统进行了研究,提出了三维可视化虚拟加工环境的系统结构,通过对设计过程中相关技术要点的探讨,运用OpenGL、VB和VC 等软件,开发出基于虚拟制造的三维数控仿真系统。 相似文献
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本文在分析虚拟制造在制造单元层实现机理的基础上,介绍了一种虚拟制造单元(VMC)几何建樟与仿真的开放式体系结构;描述了作者开发的VMC仿真系统(VMC/SIM)的系统构成及功能,并对其实现技术进行了讨论。 相似文献
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本文从虚拟制造概念出发,结合航空发动机制造过程中的工艺特点,研究虚拟仿真软件间的协同工作方式,并以软件开发的方式实现。文章主要从数据管理、流程控制、仿真报告生成和数据传递等四个方面详细介绍了虚拟加工平台的功能特点并加以说明。 相似文献
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本文从虚拟制造概念出发,结合航空发动机制造过程中的工艺特点,研究虚拟仿真软件间的协同工作方式,并以软件开发的方式实现。文章主要从数据管理、流程控制、仿真报告生成和数据传递等四个方面详细介绍了虚拟加工平台的功能特点并加以说明。 相似文献
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郑晓利 《自动化技术与应用》2009,28(11):107-109,119
本文介绍了数控车削零件的仿真加工技术。它采用CAXA软件生成NC代码,利用CAXA软件的CAM功能进行数控仿真,加载到VNUC仿真软件的计算机模拟机床里,模拟真实机床运动,最后通过数据线将G代码传输到实际机床,形成"虚拟+现实"的仿真模式。这种模式弥补了CAD/CAM软件数控仿真的不足,将虚拟的机床运动与实际的数控操作融为一体,可使用户既掌握数控铣削加工的基本原理,又掌握数控系统操作的基本技能。 相似文献
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NC milling simulation has become an important step in computer aided manufacturing (CAM). To achieve real-time simulation, the total number of polygons has to be reduced, which results in poor image quality. This paper presents an adaptive triangular mesh algorithm to reduce the number of polygons while image quality remains high. Binary tree is used to represent the milling surface, and the optimization of the mesh is performed dynamically in the process of simulation. In this algorithm, the resolution of triangles is automatically updated according to local surface flatness, thus greatly reducing the number of triangles at planar regions. By doing this, real-time and high quality of visual presentation is insured and the translation, rotation and zooming operations are still applicable. When machining precision is evaluated, or overcut, undercut and interference are inspected, full resolution model stored in memory is automatically loaded to ensure the accuracy and correctness of these inspections. Finally, an example is presented to illustrate the validity of proposed algorithm. 相似文献
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S.Q. Liu Author Vitae Author Vitae Y.P. Chen Author Vitae Author Vitae 《Computer aided design》2006,38(4):378-391
The Z-buffer based NC milling simulation approach has been widely used in a number of commercial application softwares. However, this approach is essentially based on image and hence it has many drawbacks. Some polygon-based approaches have been presented to overcome these drawbacks, but these approaches are mostly not optimal. In order to achieve real-time simulation, the total number of polygons has to be reduced in these approaches, which results in poor image quality. Using those proposed level-of-detail mesh algorithms can reduce the number of polygons, but the majority of those algorithms are not suitable for dynamic real-time NC milling simulation. Therefore, it is necessary to develop an approach to reduce the number of polygons without much loss in image quality. An adaptive regular mesh decimation algorithm is proposed in this paper. It uses a quadtree to represent the milling surface and enabled flags are used to perform the optimization of the mesh, actual insertion and deletion operations of triangles do not exist. This algorithm can automatically adjust the polygon density to approximate the milling surface according to its changes in real-time, and numerical inspections of any area of the machined surface can be performed with full resolution. 相似文献
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Interactive modeling and simulation of virtual manufacturing assemblies: An agent-based approach* 总被引:3,自引:0,他引:3
In this paper, an agent-based design and development of an interactive virtual environment for a manufacturing assembly process is described. Agents in the assembly are identified through their respective responsibilities and are implemented so that they coordinate between one another to accomplish the PC assembly/disassembly process. The robot agent, crucial to the assembly operation, is designed to handle multiple failure situations, wherein it coordinates with the part agent to accommodate the failure. 相似文献
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