Controle dimensional e geométrico de corpos de prova utilizados em reparo por atrito

Abstract

This work aimed to define the measurement procedures to perform the dimensional and geometric control of the test bodies used in the repair by friction and verify if they meet the tolerances indicated in the project. To reach the proposed objective, the test bodies (pins and blocks) were identified. In order to identify all measurands and the most adequate measurement system in each case, a wide study of the technical drawings was carried out. Subsequently, the dimensional and geometric control of the test bodies was carried out, as well as the measurement uncertainty evaluation. Finally, the measuring procedures for all the measurands were elaborated. It was possible to conclude that: four measurands did not meet the project tolerance (measurands 1, 2, 10 and 11); the observed deviations between the measured values and project tolerances were significant; and the repeatability of the measurement results was adequate, assuming in the worst condition ± 0.012 mm for a reliability of 95.45 % (measurands 7, 10 and 11).