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Development of a Flexure Mechanism for High-Precision Applications in Scanning Applications

Devakant D. Baviskar, A.S. Rao, Prasanna P. Raut

Abstract


The utilization of the Planar XY Flexural Mechanism is extensive in precision motion systems, where it induces relative motion between a fixed support and a motion stage through the utilization of material flexibility. In contrast to rigid link mechanisms, this mechanism presents noteworthy advantages, including zero backlash, frictionless motion, and high-order repeatability, all within a considerably more compact form. Notably, flexure mechanisms are characterized by their construction from a single monolith. This research primarily concentrates on modeling the flexural process to achieve precise scanning across a broader range at increased speeds. In the assessment of the motion stage's static deflection, Finite Element Analysis (FEA) is employed in the static analysis. Subsequently, the mechanism undergoes activation using a weight pan and weights, with displacement being monitored through a Dial Gauge Indicator. The experimental setup encompasses the flexural mechanism, Dial Gauge, Weight Pan and Weights, Pulley, String, Small metal strip, and Optical Bread Board. A comparison of experimental and analytical findings reveals minimal variation, affirming the effectiveness of the flexural mechanism in delivering precise motion for high-precision applications.


Keywords


Monolith mechanism, ANSYS, Optical Bread Board, Weight pan, Dial Gauge

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References


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DOI: https://doi.org/10.37591/joeam.v14i2.7640

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