RT info:eu-repo/semantics/doctoralThesis
T1 Diseño de ruedas de posicionado de precisión para ambientes criogénicos basadas en cojinetes autolubricados
A1 Redondo Caicoya, Pablo Gustavo
K1 Materiales
K1 Rodamientos
K1 Cojinetes (Maquinaria)
AB This Thesis studies the design of cryogenic precision positioning wheels,applied to the fabrication of the filter and grisms wheels of EMIR, the InfraredMulti-Object Spetcrograph for the Gran Telescopio de Canarias.Throughout this work a review is made of the available technology for this type of mechanisms –which allows them to operate in cryo-vacuum environments– and the improvements and novel ideas incorporated are described.One of the most significative contributions is the fabrication of plain bearings and friction brakes based on special auto lubricating surface treatments over an aluminium alloy substrate. These components allow a reduction in the start up times of the instrument EMIR and are essential to attain the position stability of the wheels in operation.The wheels in EMIR are the first precision  ryogenic mechanisms to incorporate this improvement
PB Universidad de La Laguna. Servicio de Publicaciones
SN 978-84-15910-93-0
YR 2014
FD 2014
LK http://riull.ull.es/xmlui/handle/915/99
UL http://riull.ull.es/xmlui/handle/915/99
LA es
DS Repositorio institucional de la Universidad de La Laguna
RD 25-abr-2024