Tesis y Trabajos de Investigación PUCP

URI permanente para esta comunidadhttp://54.81.141.168/handle/123456789/6

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Autorsearch.filters.applied.operator.equals: search.filters.author.Pomiano Picon, Victor ArturoTemasearch.filters.applied.operator.equals: search.filters.subject.Mecanismos (Maquinaria)

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    Adjustment of the relative position of compliant joints within a monolithic mechanism
    (Pontificia Universidad Católica del Perú, 2019-09-27) Pomiano Picon, Victor Arturo; Theska, René; Barriga Gamarra, Eliseo Benjamín; Darnieder, Maximilian
    The sensitivity of electromagnetic force compensated weighing cells can be enhanced by adjusting the relative distance between two specific joints in its mechanism. However, owing to the difficulties of the adjustment of the flexure hinge position in the compliant mechanism, this adjustment option has not yet been realized. In this scientific thesis, an adjustment device was developed. This adjustment device can be integrated into an EMFC weighing cell and allows adjustments while the balance is in operation. To this end, the guideline VDI 2221 was applied in the design process to develop possible concept solutions. The most suitable option was selected by a technical-economic analysis. The technical realization of the selected solution concept was elaborated based on design guidelines and model equations. The adjustment device was designed to work under a tensile force of up to 15 N. A finite element analysis was performed to evaluate the operation of the adjustment device. This analysis demonstrates the feasibility of the device to shift the flexure hinge within a displacement range of 6 mm. The numerical analysis reveals an angular deflection up to 7.2 arcsec perpendicular to the rotational axis of the adjusted joint. Based on the original model, geometry variations of certain components were investigated to identify optimization possibilities. It was found that the angular distortion can be diminished by a more symmetric setup, especially concerning the linear guide.