The aim of this study is to evaluate the machining accuracy and metrological performance of a turning process through the identification of geometric errors which influence the preferencial machining plane. Therefore, experiments were conducted on a horizontal lathe according to the Indirect Calibration Method. Data were collected by a measurement system consisting of a callibrated metal artifact, a linear variable differential transformer displacement probe (LVDT) and a measuring column. The Least Squares Method was applied to correct the experimental data misalignement. Statistical analyses were conducted with the analysis of variance (ANOVA) and Tukey Test. The results indicated that geometric errors significantly affect the machine performance. The variations in the error magnitude were observed on a micrometric scale across different transverse. Besides, the position of the lathe's carriage significantly influences the errors, indicating that machined workpieces with distinct diameters and lengths must have differences in their deviations according to the error values in each position in the workspace. These findings provide valuable insights for quality and precision of machined parts, with potential to help manufacturers to identify optimal machining positions and improve product quality, advancing the metrology field knowledge by offering a unique approach to error evaluation.
Baldan et al. (Mon,) studied this question.