The introduction of the servo press in recent years has opened up options for metal stamping; within this context, enhancing material formability and reducing stamping time are important goals. Focusing on a case study of rectangular cup stamping, this study optimized the pulsating curve for a servo press. First, the forming depths, thinning ratios, and forming time resulting from a pulsating curve and a crank curve were compared. Experiment results indicated that the pulsating curve could produce 92.3 % greater forming depth and an 8% smaller thinning ratio at the same forming depth as the crank curve. Next, finite element software was used to optimize the lifting velocity, press-in velocity, lifting distance, and press-in distance of the pulsating curve with forming time, thinning ratio, and forming force as single objectives. For single-objective optimization, the smaller-the-better formula of the Taguchi method was used and the analysis values of the optimal parameter combinations were compared with the optimal analysis values of nine analysis. The optimal parameter combinations produced a shorter forming time (0.06 s less), a lower thinning ratio lower (0.1425 % less), and a smaller forming force (808 N smaller). Using ANOVA and multiple regression analysis, the influence of the four process parameters on the quality characteristics and derived their mathematical relationships were calculated and their mathematical relationships derived. Next, with forming time, thinning ratio, and forming force as the quality objectives, multi-objective optimization was conducted using the Taguchi method. The grey-entropy method, and grey relational analysis were also used. Experimental verification results revealed that the grey relational grade of the optimal parameter combination was higher than those of the nine analysis. Furthermore, lifting velocity exerted the greatest influence on the multiple quality characteristics with a contribution of 55.01 %.

近年来，伺服压力机的推出为金属冲压开辟了新的选择。在这种情况下，提高材料可成型性和减少冲压时间是重要的目标。以矩形杯冲压为例，该研究优化了伺服压力机的脉动曲线。首先，比较由脉动曲线和曲柄曲线产生的成形深度，稀化比和成形时间。实验结果表明，在与曲柄曲线相同的成形深度下，脉动曲线可产生92.3％的成形深度，而细化率减小8％。接下来，使用有限元软件以单个时间为目标，优化脉动曲线的提升速度，压入速度，提升距离和压入距离。对于单目标优化，使用Taguchi方法的较小公式，并将最佳参数组合的分析值与9个分析的最佳分析值进行比较。最佳参数组合可缩短成型时间（减少0.06 s），降低稀疏率（减少0.1425％）以及减小成型力（减小808 N）。使用方差分析和多元回归分析，计算了四个工艺参数对质量特性的影响并推导了它们的数学关系，并推导了它们的数学关系。接下来，以成形时间，稀薄率和成形力为质量目标，使用田口方法进行多目标优化。还使用了灰色熵方法和灰色关联分析。实验验证结果表明，最优参数组合的灰色关联度高于九种分析的灰色关联度。此外，提升速度对多重质量特性的影响最大，贡献率为55.01％。