关键词: 滚切加工原理, B样条插值, 精确建模, 瞬态啮合分析

Abstract: Aiming at the lightweight design and optimization of cylindrical gears,a new technique of precise modeling and meshing simulation analysis for cylindrical gears was proposed based on hobbing principle.According to the spatial meshing principle and general parametric equations of hob cutting surface,the general tooth surface equations of cylindrical gear was derived.The parameter equations of hob cutting surfaces with Archimedes gear hob were deduced by using standard structural parameters.Accurate tooth surface of cylindrical gear was built based on B-spline surface interpolation.By using the functions of simulation analysis and parametric further-development of ANSYS software,the precise modeling and transient meshing analysis of cylindrical gears were performed.Simulation examples and comparative analysis showed that the proposed method could be used to effectively simulate the gear meshing process and accurately analyzed the meshing characteristics and stress levels of the gear pair at any instantaneous engagement position,which provided a reliable guarantee for fatigue life analysis and structural optimization of gears.

Key words: hobbing principle, B-spline surface interpolation method, precise modeling, transient meshing analysis