
浏览全部资源
扫码关注微信
北京航空航天大学机械工程及自动化学院,北京,100083
纸质出版:2013
移动端阅览
裴旭, 宗光华, 于靖军. 柔性铰链的转动精度改进法[J]. 中北大学学报(自然科学版), 2013,34(2):120-123.
裴旭, 宗光华, 于靖军. Improved Method for Rotational Accuracy of Flexure Hinges[J]. 2013, 34(2): 120-123.
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.
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.
Li H,Ibrahim R,Cheng K.Design and principles ofan innovative compliant fast tool servo for precisionengineering[J].Mech.Sci.,2011(2):139-146.
Howell L L.Compliant Mechanisms[M].New York:Wiley,2001.
Zelenika S,Bona F D.Analytical and experimentalcharacterization of high-precision flexural pivotssubjected to lateral loads[J].Journal of theInternational Societies for Precision Engineering andNanotechnology,2002,26:381-388.
Yu Y Q,Feng Z L,Xu Q P.A pseudo-rigid-body 2Rmodel of flexural beam in compliant mechanisms[J].Mechanism and Machine Theory,2012,55(9):18.
Awtar S,Slocum A H.Constraint-based design ofparallel kinematic XY flexure mechanisms[J].Journal of Mechanical Design,2007,129:816.
于靖军,宗光华,毕树生.全柔性机构与MEMS[J].光学精密工程,2001,9(1):1-5.Yu Jingjun,Zong Guanghua,Bi Shusheng.Fullycompliant mechanisms and MEMS[J].Optics andPrecision Engineering,2001,9(1):1-5.(in Chinese)
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 withspace curve notches[J].Optics and PrecisionEngineering,2010,18(10):2192-2198.(in Chinese)
Smith S T.Flexures:Elements of Elastic Mechanisms[M].New York:Gordon and Breach Science,2000:2-5.
Jensen B D,Howell L L.The modeling of cross-axisflexural pivots[J].Mechanism and Machine Theory,2002,37:461-476.
Moon Y M,Trease B P,Kota S.Design of large-displacement compliant joints[C].In Proceedings,ASME International Design Engineering TechnicalConference,Montreal,Canada,2002.
陈贵敏,贾建援,刘小院,等.柔性铰链精度特性研究[J].仪器仪表学报,2004,25(4):107-109.Chen Guimin,Jia Jianyuan,Liu Xiaoyuan,et al.Study on the accuracy of flexure hinges[J].ChineseJournal of Scientific Instrument,2004,25(4):107-109.(in Chinese)
0
浏览量
388
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621