Ingeniería en Sistemas, Electrónica e Industrial

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Herramientas de Lean Manufacturing para la mejora del proceso de forrado de estructuras metálicas en la empresa carrocera Alme.
(2025-07) Ortega Cushqui Edwin Agustín; Escobar Naranjo Juan Camilo; Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Carrera de Ingeniería Industrial
This research was carried out at the ALME car body company, located in the city of Ambato, which specializes in the manufacture and repair of bus bodies. The purpose of the study was to propose Lean Manufacturing tools to improve the process of lining metal structures. These strategies were compiled in a manual with the objective of reducing the waste identified in the process and, in this way, contribute to the optimization of the production process of lining. For the development of this project, a comprehensive analysis of the company's current situation was carried out, which allowed us to identify the different areas of work, as well as the activities carried out in them. The study is specifically focused on the lining process, for which information was collected on the existing sub-processes. Subsequently, a time study was carried out and the main types of waste or muda were identified, such as: unnecessary movements accounting for 43.7% of the total, reprocessing accounting for 35.2%, transport accounting for 15.5%, and waiting accounting for 5.6%. These data were used to draw up the current VSM, which provided information on the initial state of the plant. Through a root cause analysis, opportunities for improvement were identified for each type of waste found. This process was complemented by a literature review focused on the advantages and benefits of each methodology, allowing for their subsequent selection. Improvement proposals were then developed, choosing three tools, resulting in the following conclusions: for rework waste, the best methodology is POKA YOKE or “zero defects”; for motios and transport, the best option is the 5S methodology, and for waiting times, the KANBAN tool.
Modelo lean manufacturing para la eliminación de desperdicios en la empresa Curtiembre Aldas
(Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Carrera de Ingeniería Industrial, 2025-02) Peñafiel Ibarra Juan Carlos; Ortiz Guerrero Daysi Margarita
This project presents a proposal for implementing Lean Manufacturing methodology at Curtiembre Aldas, located in the Tungurahua province of Ecuador. The company specializes in transforming cattle hides into finished leather for footwear and clothing. The main focus of this proposal is to eliminate non-value-adding activities, targeting key wastes such as unnecessary movements, excessive transport, and waiting times. Through the use of Lean tools, these issues within the company were addressed effectively. The research suggests the application of the 5S methodology to improve workstations by introducing manuals and systems for order and cleanliness. This approach aims to minimize time lost searching for tools or cleaning equipment, resulting in a significant 35.6% improvement compared to the company’s initial performance. As part of the SMED methodology implementation proposal, internal activities were converted into external ones, effectively organizing the necessary tools and equipment at the workstations. This led to reduced machine changeover times: from 25.83 minutes to 15.11 minutes on the splitting machine, from 68.44 minutes to 46.54 minutes on the trimming machine, and from 31.42 minutes to 19.06 minutes on the fleshing machine. Following the implementation of both methodologies, noticeable improvements were achieved in the production processes of Curtiembre Aldas, particularly in the ribera area.