Análise da confiabilidade dimensional da impressora 3D tipo core xy na produção de furos circulares

Abstract

3D printing processes are becoming increasingly known and used, with fused deposition modeling (FDM) being one of the most common. In this context, additive manufacturing has evolved a lot due to its advantages compared to traditional manufacturing processes, such as the possibility of making parts with complex geometries and reducing material loss. In the same comparison, one of the disadvantages of the 3D printing process, specifically with FDM (fusion and deposition modeling) technology, is related to precision and accuracy. In this way, the products made by these machines may have several differences, among them, dimensional and surface finishes. Therefore, it is through the metrological area such as quality control and the use of measuring instruments that we can obtain more detailed information about the accuracy of the FDM method. Thus, the objective of this evaluation was to evaluate the dimensional accuracy of the Core XY printer in the manufacture of circular holes in the vertical position. In industries, metrology is one of the most important areas, as it is indispensable both for those who manufacture and for the consumer. Having a good metrological process means that the industry values the quality of the products and consequently gives a differentiated view in the market. The first stage of this work consisted of the historical study of additive manufacturing and metrology. In the second part there was the definition of the standard part and the sizes of the diameters that would be printed in addition to the printing parameters according to the material used. In the next step, the specimens were made and soon after measurements were made with the appropriate equipment and in the final section there was a visual and statistical analysis. It was verified that the printer obtained a good surface finish performance, presenting low levels of errors. In view of the percentage statistical analysis, we concluded that the error decreases according to the increase in diameter. For the numerical analysis in mm, the error had an inverse behavior, that is, the larger the diameter, the greater the error (mm). With this, through the study of the error curve, the maximum error of the printer was observed within the printing range that was defined for the test specimens.