新型人字齿同步带与带轮结构参数的优化设计

Optimization Design of the New Type Double Helical Tooth Synchronous Belt and Pulley Structure Parameter

基于等共轭曲率高阶接触啮合理论,建立新型人字齿同步带和带传动三维模型,并利用非线性有限元分析软件对一对完全啮合状态的新型人字齿同步带与带轮进行应力与变形分析,研究了螺旋角、侧隙、带轮结构参数对带齿、强力层应力和变形影响变化规律;优化具有高综合承载能力新型人字齿同步带的结构参数。通过实验室台架疲劳寿命实验,证明新型人字齿同步带比同齿廓的直齿同步带疲劳寿命更长。

Based on higher order contact meshing theory of conjugate curvature,a three-dimensional model of the new type double helical tooth synchronous belt and the belt drive are established.The nonlinear finite element analysis software is used to analyze the stress and deformation of the new type double helical tooth synchronous belt and the pulley.Through the analysis,the change law of the helix angle,backlash,and pulley structural parameters on the stress and deformation of belt tooth and strength layers is studied,and the structural parameters of the new type double helical tooth synchronous belt with high integrated load carrying capacity are optimized.During laboratory bench fatigue life test,the new type double helical tooth synchronous belt has longer fatigue life than the same tooth profile with straight tooth synchronous belt.