基于VRML的齿轮机构运动仿真

虚拟设计是CAD研究的重要内容,它在机构设计中得到广泛应用,现在许多CAD软件都可以对机构进行虚拟设计并进行运动仿真以验证其正确性.但其存在文件大、交互性差、不便于网上传输的缺点,VRML对解决该存在的问题提供了一种崭新的思路和方法.文章介绍了VRML语言特点,研究了利用CAD软件和VRML建立虚拟静态模型和动态模型的方法与原理,并以齿轮-齿轮、齿轮-齿条机构为例重点阐述实现其运动仿真的关键技术,在此基础上完成了包括直齿圆柱齿轮机构、斜齿圆柱齿轮机构、齿轮齿条机构、圆锥齿轮机构、蜗轮蜗杆以及内齿轮啮合机构的齿轮机构三维运动仿真.

The Simulation of Gear Mechanism Movement Based on VRML

Virtual Design is very important aspect in CAD research and it is widely apphed in the design of mechanism. Now many CAD software can realize the virtual design of mechanism and simulation of mechanism movement. But its file is bulky and the ability of interaction is weak so it is difficult to transfer on web. VRML provide a brand-new thought or method to resolve the question. The feature of VRML is introduced in this paper and the method and principle of creating static and dynastic virtual model using CAD software and VRML is researched. The key technology of realizing movement simulation of gear-gear mechanism and gear-rack mechanism is emphasized , On the basis, the 3D simulation of gear mechanisms movement is realized including straight-gear cylinder mechanism , oblique-gear cyhnder mechanism, gear-rack mechanism , cone-gear mechanism, worm mechanism and inner-gear mechanism.