The triply periodic minimal surface lattice structure is innovatively introduced into the design of flexure hinges in this paper. Four types of triply periodic minimal surface lattices are generated by approximate mathematical expressions. The compliance characteristics of these four lattices are simulated by finite element analysis (FEA), and it is found that the primitive lattice (P-lattice) is the most suitable lattice for flexure hinges. Simplified model of single P-lattice and one-dimensional parallel structure composed of several P-lattices are proposed. Finally, the P-lattice is integrated into the beam portion of flexure hinges by Boolean operation, and this new type of flexure hinge is additively manufactured. The FEA and experimental results show that the compliance and compliance ratio of this new type of leaf flexure hinges are greatly improved.

本文将三重周期的最小表面晶格结构创新性地引入到挠性铰链的设计中。通过近似的数学表达式生成四种类型的三重周期最小表面晶格。通过有限元分析（FEA）对这四个晶格的顺应特性进行了仿真，发现原始晶格（P-lattice）是最适合挠性铰链的晶格。提出了单P晶格的简化模型和由多个P晶格组成的一维平行结构。最后，通过布尔运算将P晶格集成到挠性铰链的梁部分中，并以叠加方式制造这种新型挠性铰链。