Modeling And Tooth Contact Analysis For Spiral Bevel Gear Based On Discrete Tooth Surface

AbstractSpiral bevel gears are widely used transmission components in aircraft, ships, precision machine tools, construction machinery and vehicles. Precise three-dimensional solid models are essential for the finite element analysis, dynamic analysis, digital simulation. Based on the research of results presented of process on the spiral bevel gear, three-dimensional modeling and tooth contact analysis, author proposed a modeling approach based on discrete tooth surface model of spiral bevel gear, a tooth contact analysis approach based on discrete tooth surface, and established a software system to achieve modeling and tooth contact analysis.The first chapter introduced the research status of the process of spiral bevel gear, the three-dimensional solid modeling method, spiral bevel gear tooth contact analysis and parametric modeling for spiral bevel gear. And presented the content and organizational structure of the paper.The second chapter presentd a discretized modeling method for spiral bevel gear. According to different forming principle of tooth surfaces and different geometry, established the grid model of the discrete surface for big-tooth. Based on the mathematical model of the tilt method, established the vector equation of small-tooth surface, and then acquire discretization data to established small-tooth model.The fourth chapter developed a design and modeling system which also can achieve tooth contact analysis for spiral bevel gear, based on the research of discretization modeling and tooth contact analysis, using VC++with Pro/Toolkit and Matlab library in Visual Studio2005environment.The fifth chapter summarized the contents of research work and outlooked the endeavor orientation of the future research.