单轴圆弧型柔性铰链制造误差对刚度性能的影响  

Influence of manufacturing errors on the stiffness of a uniaxial circular flexure hinge

作　　者：秦宇[1] 冯之敬[1] 

机构地区：[1]清华大学精密仪器及机械学系,北京100084

出　　处：《清华大学学报（自然科学版）》2007年第8期1320-1324,共5页Journal of Tsinghua University(Science and Technology)

摘　　要：为了减小柔性铰链性能对制造误差的敏感性,应用多变量函数T ay lor级数展开的方法,建立了单轴圆弧型柔性铰链制造误差与其性能的线性误差传递函数。分析结果显示,柔性铰链性能对最小铰链厚度t的制造误差最敏感,其次是铰链圆弧半径R和铰链厚度b,铰链宽度h的影响最小。在制造中,t应采取较高精度的加工方法,R和b在合理范围内分别应取较小值和较大值。To improve the manufacturing of precision flexible hinges, a linear transfer function was developed to relate manufacturing errors in uniaxial circular flexure hinges to their performance using a multi-variable Taylor series expansion. The performance of the flexure hinge is most sensitive to manufacturing errors of the minimum thickness, t, of the hinge. Manufacturing errors of the hinge radius, R, and the hinge thickness, b, had moderate influence on the performance. Errors in the hinge width had little influence on the performance. Therefore, the minimum hinge thickness t should be manufactured with the highest precision where the radius, R, and the thickness, b, can be manufactured with normal precision.

关 键 词：柔性铰链 制造误差 误差传递函数 误差分析 

分 类 号：TH112.5[机械工程—机械设计及理论]