ANÁLISE DE UM SISTEMA DE MEDIÇÃO POR MEIO DA FERRAMENTA DE CONTROLE ESTATÍSTICO REPETITIVIDADE E REPRODUTIBILIDADE

Abstract

The analysis of a measurement system comprises the sources of variation that can influence the measurement results. The main objective of this work is to find out if the measurement system did not interfere in the total variation of the process. A case study was made, applying the statistical analysis tool in measurement systems that most covered its process: the R&R (Repeatability and Reproducibility) at the company in the city of Varginha, WB Tooling. A sample consisting of 10 (ten) pieces representing the real or expected range of the process variation and 3 (three) operators that used and influenced the measurement system studied was separated. The measurements of each evaluator were obtained at a time and the measurements of all 10 (ten) pieces made in different sequential orders were recorded, changing the order in each of the 3 (three) measurements collections. According to the results, the study was approved, having as observation only the result of the percentage of the R&R in relation to the tolerance of the process having its report considered acceptable. Anyway, the measurement system did not interfere in the total variation of the process in the case of the company in question, however through this type of analysis, some other company may come to discover errors in its production process and consequently improve its quality.