空载下礼帽形柔轮的变形分析与试验验证  

DEFORMATION ANALYSIS AND EXPERIMENTAL VERIFICATION OF HAT⁃TYPE FLEXSPLINE UNDER NO LOAD

作　　者：徐少岩 李国平[1,2] 岑国建 黄炳 罗利敏 娄军强 XU ShaoYan;LI GuoPing;CEN GuoJian;HUANG Bing;LUO LiMin;LOU JunQiang(Zhejiang Key Laboratory of Parts Rolling Forming Technology,Ningbo University,Ningbo 315211,China;Ningbo Zhongda Leader Intelligent Transmission Co.,Ltd.,Ningbo 315301,China)

机构地区：[1]宁波大学浙江省零件轧制与成型技术重点实验室,宁波315211 [2]宁波中大力德智能传动股份有限公司,宁波315301

出　　处：《机械强度》2024年第4期839-845,共7页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(52375103);宁波市科技创新2025重大专项(2019B10078,2021Z068,2023Z002);浙江省自然科学基金项目(LGF21E050002)资助。

摘　　要：柔轮作为谐波减速器的核心部件,其装配过程中的接触应力和变形分布,影响着可靠性寿命。采用礼帽形柔轮进行有限元的装配模拟过程分析,分别提取柔轮长短轴以及齿圈前后端并进行变形与应力分析。结果表明,长轴和短轴处变形与实际相符,呈现线性降低趋势;齿圈前后端变形呈周期性变化。等效应力在长轴和短轴的轴向齿宽部分呈下降趋势。齿圈前后端较大等效应力产生在长轴和短轴处,而最大等效应力出现在筒底的过渡区,为327.91 MPa,低于材料许用强度。运用高精度三坐标测量机对柔轮装配过程变形测量,以长轴和短轴的轴向齿宽方向间隔1 mm作为检测点,将测量结果与仿真结果对比验证,误差结果在5%以内,验证了该仿真分析的适用性。为后续的谐波减速器设计提供数据支持。As the core component of the harmonic reducer,the contact stress and deformation distribution during the assembly process of the flexispline affect the reliability life.The finite element assembly simulation process analysis was carried out by using hat⁃type flexispline,and the deformation and stress analysis of the long and short shafts of the flexispline and the front and rear end of the ring gear were extracted respectively.The results show that the deformation at the long axis and the short axis show a linear decrease trend in line with the actual situation,and the deformation of the front and rear end of the ring gear changes periodically.The equivalence stress shows a downward trend in the axial tooth width part of the major and minor axes.The large equivalence stress at the front and rear end of the ring gear is generated at the long and short axes,while the maximum equivalence stress appears in the transition zone at the bottom of the cylinder at 32791 MPa,which is lower than the permissible strength of the material.The deformation measurement of the flexispline assembly process was measured by the high⁃precision coordinate measuring machine,the axial tooth width interval of the long axis and the short axis was 1 mm as the detection point,and the measurement results were compared with the simulation results to verify.The error results are within 5%,which verifies the applicability of the simulation analysis and provides data support for subsequent harmonic reducer designs.

关 键 词：谐波减速器 柔轮 有限元仿真 变形测量 

分 类 号：TH132.43[机械工程—机械制造及自动化]