• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2022, Vol. 58 ›› Issue (21): 78-91.doi: 10.3901/JME.2022.21.078

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Configuration Design and Compliance Modeling of Hybrid Flexure Hinges

LI Lijian1, YAO Jiantao2,3, GUO Fei1, WANG Yingjia1, WANG Lijun1   

  1. 1. School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045;
    2. Parallel Robot and Mechatronic System Laboratory of Hebei Province, Yanshan University, Qinhuangdao 066004;
    3. Key Laboratory of Advanced Forging & Stamping Technology and Science of Ministry of National Education, Yanshan University, Qinhuangdao 066004
  • Received:2021-12-06 Revised:2022-08-04 Online:2022-11-05 Published:2022-12-23

Abstract: By segmenting and naming symmetric flexure hinges, a design method for hybrid flexure hinges based on the serial combination of base and mirrored segments is presented. Utilizing the Castigliano's second theorem, the compliance modeling of base segments is transformed into several definite integrals associated with the function of notch contours. The compliance mapping between the mirrored and its base segments and the compliance matrix of multi-segment base segments are derived, and then the generalized compliance and precision models of two-segment hybrid flexure hinges are constructed. The conic-section, rectangular beam and frustum pyramid base segments are selected, and ninety-six kinds of novel hybrid flexure hinges are designed with the presented method. The correctness of theoretical models is validated by combining examples of flexure hinges with finite element analysis, and the performances for the designed and existing configurations of flexure hinges are uniformly analyzed and evaluated. This study can provide a theoretical guidance for the configuration optimization and characteristic evaluation of flexure hinges.

Key words: hybrid flexure hinge, configuration design, compliance modeling, base segment, mirrored segment

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