Resumen-La validación de un modelo constituye un paso fundamental para garantizar la confiabilidad de la información. En este artículo se presenta una aplicación de las técnicas de validación propuesta por varios autores para un modelo dinámico en un caso de estudio real de aplicación industrial, en el ramo del área metal-mecánica. Se presenta un esquema metodológico de varios aspectos y pasos de la validación formal del modelo propuesto, en el cual se especifica las pruebas de validación en dos etapas: estructura del modelo y estructura del comportamiento. Los principales resultados muestras que estas técnicas de validación disminuyen el riesgo asociado a errores potenciales del desarrollo del modelo y su representación con la realidad al ser comparado con eventos de la vida real Palabras claves-Simulación de sistemas, modelado de sistemas continuos, verificación y validación.
General Equipment Efficiency (GEE) index allows to contrast the theoretical use of a machine with the real use given to it and thus proceed to identify possible problems and the need to implement improvement actions [1]. In order to continuously evaluate the total efficiency of a pump assembly line, a dynamic model was developed in which actions derived from failure analysis were incorporated. During the evaluation scenarios developed in the simulation, the impact of the improvements on the performance of the assembly line bottleneck station is evaluated.
In this study, the automation of an assembly process using a collaborative robotic arm (Cobot) was analyzed. The manual process is the assembly of a Lego® bricks structure and was analyzed using the technique of predetermined movements MTM-1. Moves were defined and processing time was set. The results obtained show that the automated process can increase production capacity by up to 40% using the same personnel as the manual process, but in different shifts. Likewise, defects due to a bad union between the edges of the bricks, which is the main problem in the manual process, are avoided. Finally, the automation process was detailed by associating the manual movements with the Cobot® commands in the simulation environment of the PolyScope Robot User Interface®. What has application to automate other types of manufacturing sequences and manual assemblies.
Keywords: Automatization, Robotic arm; Methods-Time Measurement; Cobot®; Lego® bricks.
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