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针对铝板冲压成形的质量问题,提出了一种变间隙压边的成形工艺优化方法。以某铝制车身内板件为例,将压边圈分块,以各压边块和凹模之间的间隙值为自变量,最小减薄率和最大增厚率为目标函数建立数学模型。首先应用拉丁超立方试验设计方法安排仿真并构造二次多项式响应面近似模型,然后基于Pareto解集的多目标粒子群优化算法得到一组非劣解集,最后从非劣解集中选取一组最优粒子。结果表明,该方法能明显改善铝板冲压的成形质量。
Aiming at the quality problem of aluminum sheet stamping, a method of forming process optimization with variable clearance blank is proposed. Taking an aluminum body panel as an example, the blank holder was divided into blocks, and the mathematical model was set up with the objective function of the minimum thinning rate and the maximum thickening rate as the independent variables with the gap values of blank holder and die as independent variables . Firstly, the Latin Hypercube test design method is used to arrange the simulation and construct the quadratic polynomial response surface approximation model. Then a multi-objective particle swarm optimization algorithm based on Pareto solution set is used to obtain a set of non-inferior solution sets. Finally, Excellent particles. The results show that this method can significantly improve the forming quality of aluminum stamping.