【摘要】 以圆筒形工件为冷冲拉深实验对象,运用回归正交试验与分析理论,设计冷冲拉深成形多试验因素回归试验方案;运用Dynaform软件对该冷冲拉深工件进行数值模拟仿真成形分析。采集多项仿真分析试验指标值,运用模糊数学中的综合评判法,对多项试验指标进行科学综合评价。运用多元线性回归的方法对实验结果进行分析,建立了各工艺因素与成形制品质量之间的回归模型,并通过方差、残差分析等对所建立的回归方程进行检验。试验最终得出凸凹模具间隙、压边力、凸缘半径对零件质量有显著影响。更多还原

【Abstract】 With the cold strong tensile experiment object of cylindrical workpiece,the test plan of cold punching stretch forming mulit-factor regression is designed with the theory of regression orthogonal experiment and analysis; Dynaform software is used for numerical simulation analysis of the cold drawing workpiece forming. A number of simulation analysis test indicators are gathered,and the comprehensive evaluation method in fuzzy mathematics is applied for scientific comprehensive evaluation of these indicators. The experimental results are analyzed with the method of multiple linear regression,and the regression model between the various process factors and the quality of products is established. Then the obtained regression equation is tested by variance and residual analysis. The experiments show that the concave-convex mold clearance,blank holder force and flange radius have significant impacts on the quality of parts.更多还原