摘要
精密平台是一种能够提供微位移的高精度工作平台,柔性铰链作为传动机构,在精密平台设计中广泛应用。柔性铰链是决定平台性能的关键,柔性铰链的结构形式和尺寸参数影响着定位精度的高低。设计了一种叠加支链形式的柔性铰链结构,推导了基于该柔性铰链的二维精密平台的工作刚度、耦合刚度、耦合系数、铰链应力等性能指标的解析公式,并采用了有限元软件对性能指标进行了验证。仿真表明,两者具有良好的一致性,为应用于精密平台的柔性铰链设计提供参考。
The precision platform is a kind of high precision working platform which can provide the micrometer displacement. In precision platform design, flexible hinge structure is widely used as mechanism of transmission. The flexible hinge plays the key role in determining the performance of the platform, the structure shape and size parameters of the flexible hinge affect the positioning accuracy. A novel flexible hinge structure constructed by superimposed branched chain is described, and the working stiffness, coupling stiffness, cou- pling coefficient as well as hinge stress performance of the platform based on this flexible hinge are calculated. In order to testify the accuracy of the results, finite element analysis software is utilized to cross validation. At last, it is showed that both the calculation and the simulation results have good consistency, which provides a reference for the design of flexure hinge used in precision platform.
作者
常旭
高思田
李东升
李琪
施玉书
钱晓力
Chang Xu Gao Sitian Li Dongsheng Li Qi Shi Yushu Qian Xiaoli(China Jiliang University, Hangzhou 310018, China National Institute of Metrology, China, Beijing 102200, China)
出处
《机械传动》
CSCD
北大核心
2017年第10期70-74,共5页
Journal of Mechanical Transmission
基金
国家重点研发计划(2016YFF0200602)
国家科技支撑计划(2011BAK15B01)
中国计量院基本科研业务费项目(31-AKY1710)
关键词
柔性铰链
叠加支链
刚度
耦合性
应力
有限元分析
Flexure hinge Superimposed branched chain Stiffness Coupling property Stress Finite element analysis
