Ingeniería en Sistemas, Electrónica e Industrial

Permanent URI for this communityhttp://repositorio.uta.edu.ec/handle/123456789/1

Browse

Filters

20202

Settings

Subject: search.filters.subject.Metodología DMAIC

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Análisis de fallas en el proceso productivo de harina de trigo mediante herramientas de control de calidad en la Empresa Molinos Miraflores S.A.
    (Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Carrera de Ingeniería Industrial en Procesos de Automatización, 2020-10) Analuiza Maiza, Álvaro Alfonso; Morales Perrazo, Luis Alberto
    ABSTRACT Despite the fact that “Molinos Miraflores S.A” company keeps control of the production process, there are internal and external factors such as personal production, raw materials or methods used that cause problems and impairs quality of final product. For this reason, the purpose of this research is to perform a failure analysis in the wheat flour production process through the use of quality control tools. The developed research is based on a qualitative - quantitative approach, based on DMAIC methodology of the Six Sigma tool, over a period of eight calendar months, which by collecting data from 30 working days for analysis of attributes and database managed by the company continuous variables analysis corresponding to January 2020, allow a technical-scientific study about current situation of wheat flour production process with respect to the quality and causes of variability. The obtained results indicate that in production areas the parameters that present a constant variability NTE INEN 616 standard, are the moisture content, wet gluten and protein, variation in the index of damaged starch, the drop rate and the presence of foreign matter. Furthermore, in the reception area a potential capacity of the process (Ppk) equal to 1.04 and a sigma level 3, in conditioning a Ppk = 0.75 and a sigma level of 2.26, in milling and sieving a Ppk = 1.14 and a sigma level of 4.12 and finally in the packaging a Ppk = 0.61 and a sigma level of 1.81, generating problems of nutrient deficiency, safety, rejected product and reprocessing that indicate direct losses for the company and decrease in prestige in the market. It is concluded that the processes that are currently being developed in the company are unstable and unable to comply with the specifications, requiring improvement activities such as standardized procedures for quality analysis, maintenance of equipment and machinery, and training on quality control issues in mill industry production processes that seek to reduce variability and production of units with quality problems.
  • No Thumbnail Available
    Item
    Análisis Lean Six Sigma en el proceso de inyección de suelas de calzado en la Empresa Plasticaucho Industrial S.A.
    (Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Carrera de Ingeniería Industrial en Procesos de Automatización, 2020-08) Abril Flores, Luis Byron; Morales Perrazo, Luis Alberto
    Abstract The waste of the productive processes as delays detects the breach of the production plan as well as the losses of capacity and economic, therefore, this investigation has as a consequence a Lean Six Sigma analysis in the process of injection of shoe soles in the company Plasticaucho Industrial S.A. The project has a quantitative and qualitative approach, based on the DMAIC methodology that has the stages of definition, measurement, analysis, improvement and control of Lean Six Sigma, a non-probabilistic sampling is used for convenience and cycle time data is collected of mold change by means of the zero-turn timing technique; The data collected is processed using the Minitab software, to finally establish a proposal for improvement through the SMED system and validate the results with the simulation in FlexSim 2019. Based on the results obtained, the main problem that affects the fulfillment of the production plan is the change of normal mold, which is mainly due to not using necessary work tools and undetermined roles of the workers, then the sigma level is determined having a value of 2,33 on average, indicating that the centering of the process is approximate. It is concluded that the mold change process has an average yield of 79.34%, and an annual loss amount of $ 38.564,04. Therefore, it indicates the process does not meet the specification and requires improvement actions for the entire injection area.