Journal of South China University of Technology(Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (11): 59-64,81.

• Mechanical Engineering • Previous Articles     Next Articles

Comparison and Analysis of Three Flexible Hooke Hinges

Sun Wei  Zhang Xian-min  Wang Nian-feng  Guan Yi-sheng   

  1. School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-04-20 Revised:2011-07-13 Online:2011-11-25 Published:2011-10-03
  • Contact: 孙炜(1977-) ，女，博士生，讲师，主要从事柔顺机构设计与分析研究． E-mail:sunwei@scut.edu.cn
  • About author:孙炜(1977-) ，女，博士生，讲师，主要从事柔顺机构设计与分析研究．
  • Supported by:

    国家杰出青年科学基金资助项目( 50825504) ; NSFC-广东联合基金资助项目( U0934004)

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Abstract:

Three large-deflection flexible Hooke hinges using reeds as the basic units are constructed,and their own structural characteristics are analyzed in detail. Then,the deformations of the flexible Hooke hinges under pure torque loads are analyzed by using a pseudo-rigid model. Moreover,under the given parameter conditions,theoretical calculations are performed for the Hooke hinges,and the results are compared with those of the finite element
analysis. It is indicated that these three flexible Hooke hinges are all of the basic rotation characteristics of original Hooke hinges and can provide large two-dimension rotating deflection,that the theoretical results obtained by the pseudo-rigid model accord with those of the nonlinear finite element analysis,and that,under the given structural parameters,Hooke hinge C is a new type of large-deformation flexible hinge because it is of large output angle up to ± 11.9 °,small rotational center drift and small input coupling,so that it can be applied to the flexible parallel mechanism and flexible precision positioning platform.

Key words: flexible hinge, flexible beam, large-deflection, Hooke hinge