Research On Simulation Algorithm Of Spiral Bevel Gear’s Virtual Manufacturing

Due spiral bevel gear has many advantages of high carrying capacity, smooth transmission,high transmission efficiency, low noise and large overlap coefficient, which is widely used in thefields of aviation, navigation and automobile, and the demand of spiral bevel gear is growing.Now the manufacturing process of spiral bevel gears is developing to digital virtualmanufacturing process, and virtual machining simulation is the key link in this process. But forthe moment, most3D models used for simulation of spiral bevel gear are built in some secondarydeveloped modeling software, and this kind of means need the support of commercialengineering software, which is copyrighted. Another problem is that the model has almost noreusability, which means we need to build a new model when the parameters are changed.Because of these reasons, this paper have conducted the thorough research of the simulationalgorithm of spiral bevel gear, under Delphi development environment, combining OpenGLinteraction techniques, this algorithm does not rely the existing commercial software.The main research contents are listed below.1. Based on spiral bevel gear formate theory, the tooling, workblank, machining coordinatesare established, the tool, workblank and milling parameters, lay a solid theoretical foundation forthe development of the simulation algorithm and simulation system.2. Based on the theory of spiral bevel gears meshing, the inner and outer rake face withblank front cone, back cone, surface cone and root cone equation are established, the toothboundary points in the machine tool coordinate system and the key problem of function with oneunknown under Delphi are solved. The solving of the tooth boundary points is the key arithmeticof tooth modeling.3. Based on Delphi+OpenGL developed software, the simulation environment is established.Workblank and the gears are established with these parameters, intersection theory and triangularpatches.4. Based on analyzing of the NC codes, the process of manufacturing of the spiral bevelgears is simulated.5. The input of multiple big wheel parameters into the simulation system achieves thecutting process simulation in real-time, which verified the generality and instantaneity of thissoftware. This paper created molding method milling big wheel virtual machining process based onDelphi+OpenGL interactive graphics technology, the system does not rely on existing3Dsoftware, laid the foundation for the subsequent error detection gear, strength analysis.