Improved Method for Rotational Accuracy of Flexure Hinges

裴旭; 宗光华; 于靖军

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Improved Method for Rotational Accuracy of Flexure Hinges

更新时间：2026-09-14

- Improved Method for Rotational Accuracy of Flexure Hinges
- 柔性铰链的转动精度改进法
- Vol. 34, Issue 2, Pages: 120-123(2013)
- 作者机构：
  
  北京航空航天大学机械工程及自动化学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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裴旭, 宗光华, 于靖军. Improved Method for Rotational Accuracy of Flexure Hinges[J]. 2013, 34(2): 120-123.
DOI：

裴旭, 宗光华, 于靖军. Improved Method for Rotational Accuracy of Flexure Hinges[J]. 2013, 34(2): 120-123. DOI：

摘要

传统切口型铰链在转动时存在转动中心的漂移

如果柔性铰链转动角度不是很大

铰链的转动中心在沿轴向的位移远小于在垂直轴线方向的位移时

则可对柔性铰链转动中心漂移模型进行简化.提出了将连接两刚体的两个切口型铰链正交放置且让转动中心轴线重合

以便抑制柔性铰链转动中心漂移的设计方法.引入了平面虚拟转动中心运动机构

实现了铰链之间的虚拟交叉约束.使用此方法可以对不同切口形状的铰链进行改进

以提高铰链的转动精度.设计了圆弧切口和直角切口的组合铰链

通过有限元仿真与传统形式的铰链进行了比较

仿真结果证明了这种方法的有效性.

Abstract

The traditional incision type hinge’s rotation pivot had center-shift

when it rotated.When the rotation angle of a flexure hinge was small

the axial displacement of the hinge’s rotation pivot was far less than the perpendicular displacement.The model of center-shift of flexure hinges was simplified.A way that cross two hinges which connect two rigid body and put the hinges’ rotation center on a common axis to restrain the center-shift was brought forward.The planar VCM(Virtual Center of Motion) mechanism was utilized to realize a virtual cross restriction of hinges.By this way

different hinges could be improved

to improve the rotation accuracy.Two flexure structures which respectively consist of leaf and circle hinges were constructed

and compared with traditional flexure hinges by the finite element analysis software.The analysis results show that the method can improve the rotation accuracy.

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references

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