| dc.description.abstract | This study utilizes the statistical software Minitab and experimental design methods to investigate the impact of sampling methods on the optimization results of filling rate and maximum forming torque in threaded hole formation. To minimize the interference from other factors, this study also designs and provides objective data sampling methods. For the torque analysis, a single experiment, nine experiments, and the four experiments with the smallest standard deviation are selected as sampling techniques. For the filling rate analysis, complete four teeth, left tooth, and right tooth are chosen as the sampling methods. Based on the aforementioned sampling methods, corresponding regression models are established and residual analysis is conducted to ensure the regression meets the basic assumptions of the theory. Subsequently, point error analysis and model variance analysis are employed to examine the differences among the sampling methods. Finally, parameter optimization is applied to each regression model to evaluate the potential impact of the sampling methods on the optimization analysis results by limiting the optimization problem. Through the analysis results, it is expected that this study can serve as a reference for the industry in exploring threaded hole processing research, thereby optimizing and improving existing manufacturing techniques. | en_US |