中国机械工程2024，Vol.35Issue(8)：1348-1357,10.DOI:10.3969/j.issn.1004-132X.2024.08.002
椭圆横断截面新型双轴柔性铰链设计及分析
Design and Analyses of a Novel Two-axis Flexure Hinge with Elliptical Transverse Cross-sections
摘要
Abstract
Two-axis flexure hinges with orthogonally-collocated notches comprised rectangular transverse cross-sections which increased the stress concentration on the sharp edges.In addition,such effects could not be avoided through notch optimization.Consequently,a novel kind of two-axis flexure hinge with elliptical transverse cross-sections was developed herein.Firstly,the parametric model of the flexure hinges with circular notches was established.Then,the compliance and stress models of the flexure hinges were developed based on the Castigliano's second theorem.The analytical models were verified through finite element analyses and the parametric simulations were performed to evaluate the characteristics of compliances and stress concentration.Finally,the compliances of a flexure specimen were tested through experiments.The results show that the ETC flexure hinges have two-dimensional anisotropic compliances.The sharp-edge structures are avoided.Therefore,the stress concentration effects are reduced and the motion capability is increased.Compared to exiting two-axis flexure hinges with identical notch profiles but rectangular transverse cross-sections,the motion capa-bility of the ETC type flexures hinges is increased by 47.9％.The ETC type two-axis flexure hinges expand the design spaces of the primary flexure structures.关键词
柔性铰链/柔性机构/椭圆横断截面/双轴柔性铰链Key words
flexure hinge/flexure mechanism/elliptical transverse cross-section(ETC)/two-axis flexure hinge分类
机械制造引用本文复制引用
魏华贤,赵永杰,杨楠,王奉涛,牛小东..椭圆横断截面新型双轴柔性铰链设计及分析[J].中国机械工程,2024,35(8):1348-1357,10.基金项目
国家自然科学基金(11872046) （11872046）
广东省自然科学基金(2022A1515010172) （2022A1515010172）
广东省科技计划(STKJ2021189,2021KTSCX031) （STKJ2021189,2021KTSCX031）
省部共建精密电子制造技术与装备国家重点实验室开放课题(JMDZ2021013) （JMDZ2021013）
