基于正交试验的半球形拉深成形工艺参数优化

Optimization of Process Parameters of Hemispherical Deep Drawing Based on Orthogonal Test

以某半球形TA1钛合金拉深成形件为例,通过ABAQUS有限元软件建立了拉深成形三位模型和数值模拟正交试验方案。以是否破裂和起皱为衡量指标,探究凹凸模间隙、拉深速度和压边力对拉深成形件质量的影响,结果表明:起皱现象主要出现在压边区域不影响成形件质量,对底部最小厚度的影响从大到小依次为拉深速度、压边力以及凹凸模间隙。基于正交试验结果设计优化方案,得到最优工艺参数组合并将其应用于实际生产得到表面质量较好的拉深成形件,结果表明:基于正交试验对拉深成形工艺参数优化的方案可行,可以为企业生产提供指导,具有一定的工程应用价值。

Taking a hemispherical TA1 titanium alloy deep drawing piece as an example, a three-position model of deep drawing and a numerical simulation orthogonal test scheme were established by ABAQUS finite element software. Taking the rupture and wrinkling as the index, the influence of the gap of the concave and convex mold, the drawing speed and the blanking force on the quality of the deep-drawn forming parts was investigated. The results show that the wrinkling phenomenon mainly occurs in the crimping area and does not affect the quality of the formed parts. The influence of the minimum thickness of the bottom from the largest to the smallest is the drawing speed, the blanking force and the embossing mode gap. Based on the orthogonal test results, the optimal design of the process parameters was obtained and applied to the actual production of deep-drawn parts with good surface quality. The results show that the optimization of the parameters of deep drawing process based on orthogonal test is feasible. It can provide guidance for enterprise production and has certain engineering application value.