Estudo das causas de variação do processo de construção da estrutura inferior de uma carroceria automotiva em uma indústria

Abstract

The variability of an industrial process is frequent and must be considered in the construction of the engineering projects, to establish limits for such variations, só that the production itself can be as homogeneous as possible. Processes that deviate from this rule can generate costs, the necessity to rework on the item, customer complaints, repairs to be done outside the company or even a recall on the final product. To ensure a stable process is the key to lower unplanned costs and secure a product that will attend to the costumer’s and the company’s demands. The Lean Six Sigma method offers a range of measures to be applied in a process that aim stabilization, and to reduce, or eliminate, unplanned variations and increase the sigma level of the process, which makes a low rate of defective products and low waste possible. Using the DMAIC method, together with six sigma the study was able to find nonconformities in the supplier machine, that affected in the variation observed. Other variation points were not identified.