Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
STUDY OF MEASURING INSTRUMENT CAPABILITY THROUGH Cdl* AND Cg COEFFICIENTS AND CONTROL CHARTS
Submission Author:
Felipe Roque de Albuquerque Neto , PE , Brazil
Co-Authors:
Felipe Roque de Albuquerque Neto, José Eduardo Ferreira de Oliveira
Presenter: Felipe Roque de Albuquerque Neto
doi://10.26678/ABCM.COBEM2023.COB2023-1876
Abstract
This work presents a study about Cdl* and Cg capability coefficients and control charts applied to the control of a dimensional measurement process. The Cdl* capability coefficient was developed by the Tolerancing and Metrology research group of the Federal Institute of Pernambuco (IFPE). The mean and range Shewhart control charts were elaborated, so that there was the possibility to analyze the behavior of the capability coefficients before the control charts. Both studies started with a group of 20 samples, each containing five measurements/points, performed with a digital caliper with a nominal range of 0 – 150 mm. Measurements were made on a standard high speed steel block with a nominal dimension of 50 mm. It should be noted that, before generating the capability coefficients using the Cdl* Web Software and the control charts using the Control Chart Software, the samples were tested for normality, using the Shapiro-Wilk, Cramér-Von Mises and Kolmogorov method. -Smirnov via ACIC Normality, and by an outlier detection, by the methods of Dixon, Grubbs, Chauvenet, via Analysis Outliers.
Keywords
High-speed steel standard block, mean-range control chart, Cg capability index, Cdl* capability index, digital caliper
