Ingeniería Mecánica

Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/900

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Subject: search.filters.subject.MADERA

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    Diseño y construcción de una máquina afiladora de cuchillas de widia para la maderera Guambuguete’s de la ciudad de San José de Chimbo
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2025-02) Guambuguete Yauqui, Andrés Isaías; Muisin Martínez, Alex Efraín; Analuiza Maiza, Oscar Iván
    The design and construction of the widia blade sharpening machine for Maderera Guambuguete's arose due to the difficulty of sharpening the blades, the distance from the sharpening machines and the high cost of this process, factors that limited production and reduced efficiency in the daily preparation of wood. The methodology applied employs the documentary research method, as well as field research, with a design approach; while the types of research employed are descriptive, which begins with an analysis of the constituent parts, followed by analytical design, as well as CAD, CAE analysis, and the preparation of plans, continuing with the acquisition of materials, the machining of each part and the assembly of the set. The design began with the determination of the Knoop hardness of 7000 HK, using a 0.4 hp motor and an AISI 1045 steel blade holder, with a diameter of 2” and 600 mm. It includes a 5 mm sliding plate, 4 mm protective box, and a 126 mm power screw. The structure is formed by the base plate, collector, guide plate and 50x6 AL 50x6 stops. A 0.85 hp coolant recirculation pump was selected, with a flow rate of 10 lpm, meeting the required standards; while the safety factors vary between the one calculated and the one given by finite elements with an error percentage ranging from -4 to +20 percent that serves as a reference for the proper execution of the project. With the analyses carried out, using components and materials according to the specifications, the design and construction of the widia blade sharpening machine was achieved and the respective testing was carried out.
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    Análisis de la velocidad de combustión y su incidencia en los materiales utilizados en el interior de carrocerías para vehículos
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Villena Portero, José Luis; Castro Miniguano, Christian Byron
    In the present experimental work the flammability index of some of the materials in the construction of bodies is obtained, the process to carry out these tests is found in the ISO 3795 standard, the inflammability index that the materials in the construction in the bodies have a good behavior in front of the fire said materials should help to repel the fire. The ISO 3795 standard establishes the following principles: Composite materials: Interior roof lining (Fiberglass + polyester resin) and Interior side lining (Fiberglass + polyester resin); Textile materials Pranna flexible polyester (seat lining) and Textile based on vinyl (floor lining) and Wood Triplex marine (body floors of mass transport vehicles) The allowed flammability indices are: 100 mm / min and 250 mm / min respectively. The INEN 1668 and 1323 norms indicate what the flammability index is allowed in the construction materials of bodywork interiors. There is no need to comply with the provisions of the regulations.
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    Análisis y determinación de las propiedades mecánicas de los tipos de maderas usados en la construcción de pisos de buses urbanos o bus tipo
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2017-10) Suqui Pintado, German Israel; Castro Miniguano, Christian Byron
    The present work was based on the analysis of a material composed of wood, which is used in the manufacture of the floors of the metalworking bodies of the urban buses, the research allowed to determine the properties of flexural, tensile and impact of this material, because in the sector must comply with standards that can certify their models, which improves the quality and guarantees their products. The documentary and bibliographical modality project identified the characteristics of the mentioned materials, consequently proceeded to make specimens for the mentioned test, which must be established with the following standards (flexion, tensile with the ASTM D143, impact with ASTM E23). From the results obtained in the tensile, flexural and impact tests, was determined that the wood plywood marine 12 mm with a resistance of 44,9 N/mm is ideal for the preparation of the floors of the urban buses or bus type.