Abstract Compliant hinges are one of the most widely used design elements in precision mechanism design. They enable higher precision rotation than multi-part hinges and facilitate the adaptation of macro-scale parallel mechanisms into micro-scale. Existing hinge designs offer either a large range at the expense of rotational accuracy or attempt to produce accuracy at the expense of range and stiffness. This paper investigates novel hinge structures which increases range, stiffness and precision and characterises the trade-off between the parameters. A computational topology optimization methodology is developed, and the effects of varying geometry and orientation investigated. Two novel hinges are proposed based on the results, which can be employed in heuristic mechanism designs and their enhanced performance demonstrated in a 3-PRR positioning mechanism.

中文翻译：

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用于精度和范围最大化的刚度约束挠性铰链的拓扑优化

摘要 柔性铰链是精密机械设计中应用最广泛的设计元素之一。与多部分铰链相比，它们能够实现更高的旋转精度，并有助于将宏观平行机构适应于微观尺度。现有的铰链设计要么以牺牲旋转精度为代价提供大范围，要么试图以牺牲范围和刚度为代价来提高精度。本文研究了增加范围、刚度和精度的新型铰链结构，并表征了参数之间的权衡。开发了一种计算拓扑优化方法，并研究了不同几何形状和方向的影响。根据结果​​提出了两种新颖的铰链，