Geometry Modeling of Spiral Bevel Gears Based on Generating Tooth-surface

According to the processing principle of spiral bevel gear,the tooth-surface equations of gear and pinion were deduced in detail from the cutter parameters based on gear meshing theory. The data of tooth-surface were collected and calculated in MATLAB according to machining parameters of a pair of gears. Surface-fitting was based on the data denoising and smoothing in Pro/E.The accurate generating surface was established. The data of generating surface was helpful to gear CAE.The test results indicated that the accurate tooth-surface model of spiral bevel gear has high precision.The 3-D model of spiral bevel gear established can be used for simulating assembly,interference inspection,dynamic simulation of engagement and FEM. The work in this paper lays the foundation of the optimization design,manufacturing and analysis of spiral bevel gear.