基于增材制造的交叉簧片柔性铰链设计与分析  

Design and Analysis of a Cross-spring Flexure Hinge Based on Additive Manufacturing

作　　者：陈霖 陆秋阳 赵凯 岳义 CHEN Lin;LU Qiuyang;ZHAO Kai;YUE Yi(School of Mechanical and Automotive Engineering,Shanghai University Of Engineering Science,Shanghai 201620,China;Shanghai Aerospace Equipments Manufacturer Co.,Ltd.,Shanghai 200245,China;Shanghai Engineering Research Center of Additive Manufacturing,Shanghai 200245,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620 [2]上海航天设备制造总厂有限公司,上海200245 [3]上海复杂金属构件增材制造工程技术研究中心,上海200245

出　　处：《上海航天(中英文)》2025年第1期126-133,共8页Aerospace Shanghai(Chinese&English)

基　　金：国家自然科学基金资助项目(No.51905337);上海市地方院校能力建设资助项目(22010501700)。

摘　　要：柔性铰链作为柔性机构的关键部件,得到了国内外研究者的广泛关注,为探究增材制造技术应用在柔性铰链设计领域中的可行性,本文面向增材制造工艺设计了一种交叉簧片柔性铰链。首先,建立了交叉簧片柔性铰链的等效转动刚度模型。其次,选取了簧片厚度t、孔洞尺寸a、b以及交叉角度α,3个关键设计参数设计并采用激光选区熔化(SLM)技术制作了一组铰链实例,对其进行了理论分析,采用有限元仿真,搭建了视觉测试平台对铰链实例进行测试。结果表明:铰链刚度的理论值、仿真值和实验值具有较好的一致性,验证了模型的有效性。最后,采用在簧片与基体接触处设置圆角,以及非等厚度簧片的设计对柔性铰链结构进行了优化,提升了柔性铰链结构制造稳定性,并优化了铰链的传动性能。The flexure hinge,as a critical component of compliant mechanisms,has garnered widespread attention from researchers worldwide.To explore the feasibility of applying the additive manufacturing technology in the design of flexure hinges,a cross-spring flexure hinge for additive manufacturing processes is designed.First,an equivalent stiffness model of the crossed-spring flexure hinge is established.Second,three key design parameters,i.e.,the spring thickness t,the hole dimensions a and b,and the crossing angleα,are selected,and the selective laser melting(SLM)technique is used to fabricate a set of hinge prototypes.Third,the fabricated prototypes are analyzed theoretically,simulated by the finite element method,and tested by a visual testing platform.The results demonstrate good consistency among the theoretical,simulation,and experimental stiffness values,verifying the validity of the proposed model.Finally,the flexible hinge structure is optimized by introducing reeds at the contact points between the springs and the matrix and employing springs with non-uniform thicknesses,which enhances the manufacturing stability and improves the transmission performance of the hinge.

关 键 词：柔性铰链 交叉簧片 增材制造 等效刚度 弯扭耦合 

分 类 号：TH122[机械工程—机械设计及理论]