一种基于OpenGL的渐开线齿轮三维几何模型构建方法  

An OpenGL-based approach to build 3D geometry model for involute gear

作　　者：王永超[1] 

机构地区：[1]广东技术师范学院广东省数控技术重点实验室,广州510635

出　　处：《现代制造工程》2007年第10期51-54,共4页Modern Manufacturing Engineering

基　　金：广东省自然科学基金资助项目(20040773)

摘　　要：三维几何模型是齿轮有限元分析及齿轮机构虚拟仿真的基础,通常的CAD系统要通过编程才能实现齿轮三维模型的构建。为此提出一种基于开放性图形库(OpenGL)的齿轮三维模型直接构建方法。该方法定义了构建齿轮的基本单位即齿元,并利用图元构造齿轮齿元。通过对齿轮齿元进行顶点操作实现阵列功能,以及对齿元进行模型变换实现拉伸功能,来实现整个齿轮的三维模型构建。这一方法可通过指定顶点数量自由控制齿元建模精度,提高整个齿轮几何模型的精确度,较方便地满足齿轮CAE和虚拟仿真的要求。Gear 3D geometry model is a stepping-stone for such applications as FEM and virtual simulation. However programming is often required in CAD software packages when building these models. Presents a straightforward modeling method, which based on OpenGL, to construct gear 3 D model. In this method, the modeling unit, named mata-tooth, is defined with graphical primitives in OpenGL. Gear model is got by perform operations on mata-tooth in sequence. Specifying different vertex number of mata-tooth results in different model accuracy. Therefore this method can meet requirements of different applications such as CAE and virtual simulation.

关 键 词：齿轮齿元 精确建模 几何模型 开放性图形库 

分 类 号：TH16[机械工程—机械制造及自动化]