Influence of the Flexure Hinge Shape on Compliant Gripper Small Displacements
Keywords:
Compliant mechanism, flexible hinge shape, finite elements analysis, materials, displacementAbstract
This paper proposes a new model of compliant gripper used to micromanipulate small objects. The gripper is designed with 16 flexible hinges of the same shape and the same overall dimensions. The influence of the lengths of the kinematic elements on the displacement amplification is studied. The shape of the flexible hinges is an essential factor in the final displacement of the tweezers. So, it was analyzed the displacement for: corner filleted with different radii, circular, elliptic and parabolic shape. Compliant mechanisms perform differently depending on the elasticity of the materials from which they are made, so this aspect is also analyzed. Finally, the results obtained from the finite element analysis are presented comparatively.
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