Li Lijian, Zhang Dan, Guo Sheng, Qu Haibo
School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China.
School of Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
Sensors (Basel). 2017 Sep 19;17(9):2154. doi: 10.3390/s17092154.
As a kind of important flexible joint, two-axis flexure hinges can realize in-plane and out-of-plane motions and can be used for constructing flexure-based spatial compliant mechanisms. The paper introduces a common two-axis elliptical-arc-filleted flexure hinge that is generated by two different elliptical-arc-filleted cutout profiles and that provides some new hinge types. The analytical compliance equations of both half-segments of the two-axis elliptical-arc flexure hinges are firstly formulated, and then, based on a generic compliance modeling method of a flexure serial chain, the closed-form compliance and precision matrices of two-axis elliptical-arc-filleted flexure hinges are established and validated by the finite element method. Some numerical simulations are conducted to compare the effect of different design geometric parameters on the performance of the two-axis flexure hinges.
作为一种重要的柔性关节，双轴柔性铰链能够实现平面内和平面外运动，可用于构建基于柔性的空间柔顺机构。本文介绍了一种常见的双轴椭圆弧圆角柔性铰链，它由两种不同的椭圆弧圆角切口轮廓生成，并提供了一些新的铰链类型。首先推导了双轴椭圆弧柔性铰链两个半段的解析柔度方程，然后基于柔性串联链的通用柔度建模方法，建立了双轴椭圆弧圆角柔性铰链的闭式柔度和精度矩阵，并通过有限元方法进行了验证。进行了一些数值模拟，以比较不同设计几何参数对双轴柔性铰链性能的影响。
