`Additive Manufacturing of Compliant Mechanisms Designed for Small Displacements of Optical Components
摘要
This paper primarily investigates the influence of two geometric parameters on the mechanical behavior of a cross-axis flexural pivot (CAFP), which enables motion along two axes. The objective of this study is to explore the potential for optimizing material consumption and reducing the mass of compliant mechanisms that incorporate CAFP structures. To achieve this, a design strategy was proposed in which each blade is replaced by two parallel blades of equal thickness, thereby minimizing material usage without compromising functionality. For reference, structures with whole blades were also studied. The varied parameters are the distance between the outer walls of a bar and, respectively, the distance between the inner walls of the blade. Due to the complexity of the structure, the most suitable manufacturing methods are 3D printing or injection. A Finite Element Analysis (FEA) was used to observe behavior under static loads in the plane of motion of the CAFP and to determine the modal frequencies. The results suggest that blade separation increases the resistance of CAFP against forces that would cause a rotational movement but decreases the resistance against forces that would cause compression. It was also observed that the volume of material used largely determines the modal frequencies of these CAFP structures with separated blades but has a more limited impact on those with whole blades.