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HYBRID Bi-Directional Flexure Joint



Vincent D. Lee, James M. Gibert, John C. Ziegert


Flexural bearing joints are utilized in precision mechanisms that require repeatable and friction free motion. As such, there exist numerous embodiments of a flexural bearing. The work in this paper expands the pool of existing flexure designs by introducing a novel two-degree of freedom (DOF) flexural joint, dubbed the Hybrid Bi-Directional Flexure Joint (HBFJ). Manufactured using planar processes, the HBFJ also permits motions out of the plane, unlike most of its traditional counterparts. It is constructed with an open, thin walled cavity as the base joint which can be filled with an elastomeric material. The filler is intended to limit axial deflection, while still permitting it to bend in and out of plane. Additionally, the elastomer provides vibration damping to the joint. This paper examines the concept of the HBFJ, the design approach, and possible applications along with presenting experimental results for stiffness, range of motion, and vibration damping.
Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology


flexure, precision instruments, damping


Lee, V. , Gibert, J. and Ziegert, J. (2014), HYBRID Bi-Directional Flexure Joint, Precision Engineering-Journal of the International Societies for Precision Engineering and Nanotechnology, [online], (Accessed July 24, 2024)


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Created April 14, 2014, Updated November 10, 2018