锻压技术

1060铝板凸曲台件外轮廓支撑渐进成形壁厚均匀临界角研究

英文标题：Research on critical angle of uniform wall thickness in incremental forming with outer contour support for convex curved part of 1060 aluminum sheet

作者：施文强高锦张

单位：东南大学

关键词：1060铝板凸曲台件渐进成形壁厚均匀临界成形角

分类号：TG379.6

出版年,卷(期):页码：2019,44(9):27-32

摘要：

基于ANSYS/LS-DYNA有限元软件，对1060铝板凸曲台件外轮廓支撑渐进成形壁厚均匀临界角进行研究。建立外轮廓支撑渐进成形凸曲台件的有限元模型，利用数值模拟方法研究了外轮廓支撑渐进成形凸曲台件的壁厚均匀临界成形角θ均匀，并进行了实体实验，实验结果验证了模拟结果的可信性。分析了板料厚度、工具头直径和轴向进给量对θ均匀的影响。结果表明：θ均匀随着板料厚度的增大而逐渐增大，随着工具头直径的增大而减小，轴向进给量对θ均匀基本无影响。同时，比较了单道次、2道次、3道次自上而下和3道次自下而上这4种不同成形方式下大切角凸曲台件的壁厚分布。结果发现：3道次自下而上的方法能获得壁厚更加均匀的凸曲台件。

The critical angle of uniform wall thickness in the incremental forming with outer contour support for convex curved part of 1060 aluminum sheet was studied by finite element software ANSYS/LS-DYNA, and its finite element model was constructed. Then, the critical forming angle θ均匀 of uniform wall thickness for convex curved part in incremental forming with outer contour support was researched by numerical simulation method, the physical experiment was carried out, and the experimental results verified the credibility of the simulation results. Furthermore, the influences of sheet thickness, tool head diameter and axial feeding on θ均匀 were analyzed. The results show that the θ均匀 increases gradually with the increasing of the sheet thickness and decreases with the increasing of the tool head diameter, and the axial feeding has little effect on θ均匀. At the same time, the wall thickness distributions of large-angle convex curved part were compared by different forming methods of single-pass, two-pass, three-pass up-bottom and three-pass bottom-up. The results find that the three-pass bottom-up method obtains the convex curved part with more uniform wall thickness.

基金项目：

先进数控技术江苏省高校重点建设实验室开放基金项目（KXJ05017）

施文强（1996-），男，硕士研究生 E-mail：1468256885@qq.com 通讯作者：高锦张（1963-），男，硕士，副教授 E-mail:drd.0412@aliyun.com

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