Browsing by Author "Cuesta Chaca, Silvana Alexandra"

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Optimization of Assembly Processes Based on Lean Manufacturing Tools. Case Studies: Television and Printed Circuit Boards (PCB) Assemblers
(ICAT, 2020) Cuesta Chaca, Silvana Alexandra; Sigüenza Guzmán, Lorena Catalina; Llivisaca Villazhañay, Juan Carlos
In the current global context, where competition is growing, it is necessary to change the ways how companies operate, eliminating waste through the implementation of optimization tools such as the ones included in the Lean Manufacturing (LM) philosophy. LM is defined as a systematic process of waste elimination, which achieves a sustained rate of improvement over time. This research describes an optimization proposal with LM tools, performing an analysis of the processes’ state of two companies focused on the assembly of televisions and Printed Circuit Boards (PCB) for televisions, respectively. Through Value Stream Mapping (VSM), it was possible to identify problems in the production processes within the two case studies. Regarding televisions, the use of various tools such as 5S and Workloads led to the elimination of one workstation, projecting an increase of almost 5% of the units produced in the assembly capacity of the plant. In the case of PCBs, the distances traveled by operators was reduced with the use of plant distribution strategies and the creation of a supermarket to supply post-assembly activities. These actions allowed the company to reduce 35% in traveled distances and increase 3.69% in the number of produced units. Validation of the optimization proposal was done through computer simulations using a process modeling software.
Propuesta de optimización de procesos basado en herramientas de manufactura esbelta en industrias de ensamblaje. Caso de estudio: ensambladoras de televisores y de tarjetas electrónicas
(Universidad de Cuenca, 2019-11-07) Cuesta Chaca, Silvana Alexandra; Llivisaca Villazhañay, Juan Carlos
In the current global context, where competition is growing, it is necessary to change the way companies operate, eliminating waste through the implementation of tools such as those of the Lean Manufacturing (ME) philosophy. Defined as a systematic process of waste elimination, which achieves a sustained rate of improvement over time. The present work proposes an optimization proposal with ME tools, performing an analysis of the state of the processes of two companies dedicated to the assembly of televisions and the assembly of printed circuit boards for televisions. Through Value Stream Mapping (VSM), it was possible to identify problems in the production processes for the two case studies. Here, the use of various tools such as 5S and Workloads led, in the case of televisions, to the elimination of one workstation. Projecting an increase in the assembly capacity of the plant, with up to almost 5% of the units produced, and the reduction of a workstation. In the case of printed circuit boards, this meant reducing the distances travelled by operators with plant distribution and the creation of a supermarket for the supply of post-assembly activities. With a 35% reduction in distances travelled and a 3.69% increase in the number of units produced. Validation of the optimization proposal was done through computer simulations using process modeling software.