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

Abstract

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.