In order to eliminate the meshing interference between the flexspline and circular spline after the taper deformation of the flexspline,the radial deformation difference method,major and minor axis fitting method,and ...In order to eliminate the meshing interference between the flexspline and circular spline after the taper deformation of the flexspline,the radial deformation difference method,major and minor axis fitting method,and ellipse fitting method are used to modify the tooth thickness of the flexspline and analyze the performance indexes such as the assembly stress,transmission error,and fatigue life.Firstly,the conjugate tooth profile is solved based on the quadruple-circular-arc tooth profile and modified kinematic method.Then,based on the finite element radial deformation of the flexspline,the principle and characteristics of three modification methods are analyzed,and the modification amount of each section of the flexspline tooth is calculated.Finally,the influence of the three modification methods on the performance of the harmonic drive is compared.The results show that the radial deformation difference method can initially determine the modification amount.The minimum static assembly stress is 406.22 MPa by the major and minor axis fitting method.The ellipse fitting method has the best dynamic performance,small transmission error fluctuation,a peak-to-peak value of 3.060",and a maximum fatigue life of 10^(7.558)cycles.展开更多
为解决谐波减速器运行中因轮齿干涉及齿面接触不充分导致的应力集中问题,提出了一种基于有限元法(Finite Element Method,FEM)的螺旋线方向修形方法。首先,基于齿面接触分析(Tooth Contact Analysis,TCA)设计柔轮与刚轮齿廓,为实现对谐...为解决谐波减速器运行中因轮齿干涉及齿面接触不充分导致的应力集中问题,提出了一种基于有限元法(Finite Element Method,FEM)的螺旋线方向修形方法。首先,基于齿面接触分析(Tooth Contact Analysis,TCA)设计柔轮与刚轮齿廓,为实现对谐波减速器工作状态的精准模拟奠定基础。随后,基于齿面接触分析的有限元法重构柔轮模型。在保持柔轮原齿廓完整性的前提下,进行螺旋线方向修形。最后,通过有限元仿真验证修形效果。结果表明,修形后柔轮齿面最大等效应力与啮合压力显著降低,齿面接触区域明显扩大。该方法有效解决了轮齿干涉与应力集中问题,显著提升了传动平稳性,为谐波减速器齿轮啮合性能优化提供了技术参考。展开更多
文摘In order to eliminate the meshing interference between the flexspline and circular spline after the taper deformation of the flexspline,the radial deformation difference method,major and minor axis fitting method,and ellipse fitting method are used to modify the tooth thickness of the flexspline and analyze the performance indexes such as the assembly stress,transmission error,and fatigue life.Firstly,the conjugate tooth profile is solved based on the quadruple-circular-arc tooth profile and modified kinematic method.Then,based on the finite element radial deformation of the flexspline,the principle and characteristics of three modification methods are analyzed,and the modification amount of each section of the flexspline tooth is calculated.Finally,the influence of the three modification methods on the performance of the harmonic drive is compared.The results show that the radial deformation difference method can initially determine the modification amount.The minimum static assembly stress is 406.22 MPa by the major and minor axis fitting method.The ellipse fitting method has the best dynamic performance,small transmission error fluctuation,a peak-to-peak value of 3.060",and a maximum fatigue life of 10^(7.558)cycles.
文摘为解决谐波减速器运行中因轮齿干涉及齿面接触不充分导致的应力集中问题,提出了一种基于有限元法(Finite Element Method,FEM)的螺旋线方向修形方法。首先,基于齿面接触分析(Tooth Contact Analysis,TCA)设计柔轮与刚轮齿廓,为实现对谐波减速器工作状态的精准模拟奠定基础。随后,基于齿面接触分析的有限元法重构柔轮模型。在保持柔轮原齿廓完整性的前提下,进行螺旋线方向修形。最后,通过有限元仿真验证修形效果。结果表明,修形后柔轮齿面最大等效应力与啮合压力显著降低,齿面接触区域明显扩大。该方法有效解决了轮齿干涉与应力集中问题,显著提升了传动平稳性,为谐波减速器齿轮啮合性能优化提供了技术参考。
