梳齿形柔性铰链的设计与分析  

Design and Analysis of Comb-Shaped Flexure Joint

作　　者：邱丽芳[1] 孟天祥[1] 张九俏 杨德斌[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083

出　　处：《东北大学学报（自然科学版）》2014年第9期1316-1320,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51275034)

摘　　要：提出了一种基于平面折展机构的梳齿形状的新型柔性铰链,设计了该铰链的结构形式,并对其进行了分析,推导出该结构形式铰链的弯曲等效刚度计算公式.通过设计实例的理论计算和有限元仿真分析,验证了计算公式和仿真模型的正确性,同时也验证了新型铰链的弯曲等效刚度在较大角位移下仍能保持良好的线性.对设计实例的强度进行了校核,在铰链达到最大角位移时具有较大的安全系数,并对设计实例的扭转等效刚度进行了仿真分析.最后,将设计实例的弯曲等效刚度与文献给出的IT-LEJ及LET铰链的弯曲等效刚度进行了比较.A new comb-shaped flexure joint was proposed and designed in lamina emergent mechanisms. The equivalent stiffness of the comb-shaped flexure joint was deduced. Using theoretical calculation and finite element simulation analysis of the design example, the correctness of the calculation formula and simulation models was verified. Meanwhile, the equivalent stiffness could maintain a linear relationship even in large angular displacement. The strength of the example had been checked under the maximum angular displacement of the joint. Torsion stiffness of the joint was also simulated and analyzed. The bending stiffness of the example was compared among the comb-shaped flexure joint, IT-LEJ joint and LET joint.

关 键 词：平面折展机构 柔顺机构 梳齿形铰链 等效刚度 有限元分析 

分 类 号：TH122[机械工程—机械设计及理论]