Design of flexure hinges with space curve notches

LI Lin; YANG Yong

doi:10.3788/OPE.20101810.2192

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Design of flexure hinges with space curve notches

Article | 更新时间：2020-08-12

- Design of flexure hinges with space curve notches
- Optics and Precision Engineering Vol. 18, Issue 10, Pages: 2192-2198(2010)
- 作者机构：
  
  北京航空航天大学能源与动力工程学院北京,100191
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20101810.2192
  CLC： TH133
- Received：27 December 2009，
  
  Revised：25 March 2010，
  
  Published Online：28 October 2010，
  
  Published：20 October 2010
- 稿件说明：
移动端阅览
李琳, 杨勇. 空间曲线切口式柔性铰的设计[J]. 光学精密工程, 2010,18(10): 2192-2198

LI Lin, YANG Yong. Design of flexure hinges with space curve notches[J]. Editorial Office of Optics and Precision Engineering , 2010,18(10): 2192-2198
李琳, 杨勇. 空间曲线切口式柔性铰的设计[J]. 光学精密工程, 2010,18(10): 2192-2198 DOI： 10.3788/OPE.20101810.2192.

LI Lin, YANG Yong. Design of flexure hinges with space curve notches[J]. Editorial Office of Optics and Precision Engineering , 2010,18(10): 2192-2198 DOI： 10.3788/OPE.20101810.2192.

摘要

为了满足精密仪器连接部件的柔度和强度需求

以切口曲线为二次曲面和圆柱面的相贯线的柔性铰为例

研究了一类空间曲线切口式柔性铰的设计方法。推导了此类柔性铰转动柔度的一般设计计算公式

分析了设计参数对柔度特性的影响

在此基础上提出了此类柔性铰的设计方法。依据提出的方法设计了空间曲线切口式柔性铰

并利用有限元分析方法对设计实例进行了柔度和强度校核

同时建立了模态实验系统识别其柔度。结果表明

两种柔度校核结果与设计计算公式结果吻合较好

最大误差不超过5%

验证了设计方法的有效性

为此类柔性铰应用于精密仪器的工程设计提供了参考。此外

文中给出的有限元建模分析方法以及试验测试方法也可用于相同类型的精密构件的力学特性研究与分析。

Abstract

In order to satisfy the needs of compliances and strengths of transmission parts in a variety of precision instruments

the flexure hinges with space curve notches that are intersecting lines of quadric surfaces and cylinders were studied in detail. Firstly

a general design equation for calculating the rotation compliance of this kind of hinge was deduced

and the effects of the design parameters on the compliance characteristics were discussed. Based on the analyses

a design method of this kind of hinge was proposed

and a design example was used to illustrate the usage of the method. The compliance and the strength of the example were verified by finite element analysis and experiments.Results show that the obtained compliances from the three methods are in a good agreement

and the maximum error is less than 5%

which indicates that the design method is effective and can be used for engineering design of this kind of hinge. In addition

the finite element model method illustrated in this paper and the proposed model testing method can be used to determine the mechanical properties of this kind of hinge.

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references

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