Examinando por Materia "Incremental forming"

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    Ítem
    Statistical analysis of the main incremental forming-SPIF process parameters that contribute to the change the roughness in an experimental geometry
    (FEDERACION ASOCIACIONES INGENIEROS INDUSTRIALES ESPANA, 2016-11-01) Paramo-Bermúdez, G.-J.; Bustamante-Correa, F.-A.; Benítez-Lozano, A.-J.; Paramo-Bermúdez, G.-J.; Bustamante-Correa, F.-A.; Benítez-Lozano, A.-J.; Universidad EAFIT. Departamento de Ingeniería de Producción; Grupo en Tecnologías para la Producción
    Over time the process of incremental deformation of sheet metal without matrix in its variant (SPIF), has been developed in different countries with the aim of meeting the needs of flexible production with no investment in tooling and low production costs. As in any manufacturing process is important to obtain a surface quality of the part that meets customer needs, this variable is evaluated by the average roughness (Ra). For this reason the purpose of this study is to investigate the influence of the variation of three process parameters and determine which of them contributes in greater proportion to the change in the average roughness (Ra) measured parallel and perpendicular to the path followed by the tool. Besides this, it wants to validate the impact that has the spindle speed in the analyzed variable and the orange peel defect. To this end, a full multifactorial design of experiments with three factors and two levels () and three replicates were performed, in order to obtain greater reliability in the model. Subsequently, an analysis of variance is executed and the results are formalized, finding which parameters influence more than others in changing roughness and how the orange peel defect depends on the spindle speed. Additionally, the results are compared with the authors cited. The aspects developed in this study highlight the importance of improving quality variables in any field of sheet metal processing in the international industrial environment.
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    Statistical analysis of the parameters in SPIF/DPIF in the thickness reduction in an experimental geometry
    (Inderscience Publishers, 2019-01-01) Giraldo-Castrillon F.-A.; Giraldo-Castrillon Y.-M.; Páramo-Bermúdez G.-J.; Giraldo-Castrillon F.-A.; Giraldo-Castrillon Y.-M.; Páramo-Bermúdez G.-J.; Universidad EAFIT. Departamento de Ingeniería de Producción; Grupo en Tecnologías para la Producción
    The objective of the present study was to determine the thickness reduction during the incremental deformation process with two techniques: SPIF/DPIF. A geometric structure was built using software computer-aided design (CAD) and the paths simulated in software computer-aided manufacturing (CAM). Experimental design of a full factorial type was made 23, for each technique, eight simulations, and three replicas. The variables studied in each experiment were the wall angle, the depth increase and the diameter of the tool. The three parameters are associated with the incremental deformation, although the angle was the most influential and the interaction between them in both techniques was significant. There was no difference in the comparative analysis between the different points in which the reduction of the thickness measured, just as neither one technique showed to be superior to the other. The angle of 68°, the depth of 1.0707 mm and the diameter of 9.3737 mm produced the least deformation with the SPIF technique and the angle of 60°, the depth of 1.2 mm and the diameter of 8 mm produced the least deformation with DPIF. © 2019 Inderscience Enterprises Ltd.