锻压技术

1060铝板单道次渐进成形圆孔翻边临界翻边参数的数值模拟研究

英文标题：Research on numerical simulation of critical flange parameters for hole-flanging in single pass incremental forming of 1060 aluminum sheet

作者：张沈杨高锦张

单位：东南大学材料科学与工程学院

关键词：渐进成形圆孔翻边单道次临界翻边系数翻边高度

分类号：TG379.6

出版年,卷(期):页码：2020,45(1):186-192

摘要：

利用DYNAFORM软件构建有限元模型，对1060铝板单道次渐进成形圆孔翻边进行了研究，分析了预制孔径大小对壁厚分布规律的影响。结果表明：预制孔径过小会导致翻边出现中部减薄区；增大预制孔径，壁厚呈线性变化区和均匀分布区，中部减薄现象消除；预制孔径较大时，翻边壁厚线性分布。探究了在5种板料厚度下，不同翻边孔径对应的临界预制孔径，以及临界预制孔径对应的翻边高度，并将翻边孔径和临界预制孔径以及临界预制孔径和翻边高度之间的关系拟合成参数化方程。发现增加板料厚度，临界预制孔径减小，翻边件的成形极限增大。

A finite element model was established by software DYNAFORM to study the hole-flanging in single pass incremental forming of 1060 aluminum sheet, and the influence of the size for pre-fabricated aperture on the distribution law of wall thickness was analyzed. The results show that a small size of pre-fabricated aperture results in the central thinning zone in the flange, and when the pre-fabricated aperture increases, the wall thickness presents linearly variation zone and evenly distributed zone to vanish the central thinning zone. Therefore, when the pre-fabricated aperture is larger, the flanged wall thickness is distributed linearly. Furthermore, the critical pre-fabricated apertures corresponding to different flanged apertures and the flange heights corresponding to the critical pre-fabricated apertures were investigated under five kinds of sheet thicknesses, and the relationship between the flanged aperture and the critical pre-fabricated aperture as well as the critical pre-formed aperture and the flange height were fitted to a parametric equation. The results show that when the thickness of sheet increases, the critical pre-fabricated aperture reduces, and the forming limit of flanging part increases.

基金项目：

先进数控技术江苏省高校重点建设实验室基金开放项目（KXJ05017）

作者简介：张沈杨（1994-），男，硕士研究生 E-mail：320483205@qq.com 通讯作者：高锦张（1963-），男，硕士，副教授 E-mail：101005299@seu.edu.cn

参考文献：

[1]高锦张. 板料数控渐进成形技术[M]. 北京：机械工业出版社, 2011.

Gao J Z. NC Incremental Sheet Forming Technology[M]. Beijing: China Machine Press, 2011.

[2]莫健华, 韩飞. 金属板材数字化渐进成形技术研究现状[J]. 中国机械工程, 2008, 19(4): 491-497.

Mo J H, Han F. State of the arts and latest research on incremental sheet NC forming technology
［J］.China Mechanical Engineering，2008，19（4）：491-497.

[3]卜小芬. 圆孔翻边渐进成形的模拟研究[D]. 南京: 东南大学, 2017.

Bu X F. Simulation Study on Hole-flanging in Incremental Forming [D]. Nanjing: Southeast University, 2017.

[4]崔震，高霖，陆启建. 数控渐进成型技术在圆孔翻边中的应用[J]. 机械工程材料,2008,32(7):5-8.

Cui Z, Gao L, Lu Q J. Application of CNC incremental forming in hole-flanging process[J]. Materials for Mechanical Engineering, 2008,32(7):5-8.

[5]Duflou J R, Verbert J, Belkassem B, et al. Process window enhancement for single point incremental forming through multi-step toolpaths[J]. CIRP Annals, 2008, 57(1): 253-256.

[6]Hussain G, Gao L, Hayat N, et al. A new formability indicator in single point incremental forming [J]. Journal of Materials Processing Technology, 2008, 11: 1-15.

[7]Ambrogio G, Cczza V, Filice L, et al. An analytical model for improving precision in single point incremental forming [J]. Journal of Materials Processing Technology, 2007, 191(1-3): 92-95.

[8]赵仕宇,周超,詹艳然. 5052铝合金薄板数控渐进成形制件表面质量分析[J].塑性工程学报,2018,25(6):34-40.

Zhao S Y, Zhou C, Zhan Y R. Surface quality analysis of 5052 aluminum alloy thin sheet workpieces formed by numerical control incremental forming[J]. Journal of Plasticity Engineering, 2018, 25(6):34-40.

[9]高锦张. 塑性成形工艺与模具设计 [M]. 北京: 机械工业出版社, 2008.

Gao J Z. Metal Molding Technology & Design of Models [M]. Beijing: China Machine Press, 2008.

[10]高锦张,曹宇,贾俐俐. 单道次渐进成形圆孔翻边的数值模拟[J]. 塑性工程学报,2015,22(3):79-85，97.

Gao J Z, Cao Y, Jia L L. Numerical simulation for hole flanging by single stage incremental forming[J]. Journal of Plasticity Engineering, 2015,22(3):79-85，97.

[11]谷岩波,王辉,王会廷.AA5754 铝合金板材渐进成形壁厚均匀性研究[J].锻压技术,2018,43(1):33-41.

Gu Y B, Wang H, Wang H T, et al.Study on wall thickness uniformity in incremental forming for aluminum alloy AA5754 sheet[J]. Forging & Stamping Technology, 2018, 43(1):33-41.

[12][JP3]王泓宇,李细锋,陈军. AA1100 铝合金渐进成形的微观组织与力学性能分析[J].塑性工程学报,2018,25(6):180-188.

Wang H Y, Li X F, Chen J. Analysis on microstructure and mechanical properties of AA1100 aluminum alloy in incremental sheet forming[J]. Journal of Plasticity Engineering,2018,25(6):180-188.

[13]顾仲，高锦张. 1060铝板单道次渐进成形圆孔翻边高度与壁厚分布的研究[J]. 锻压技术，2019,44（4）：48-56.

Gu Z，Gao J Z, Study on height and wall thickness distribution of hole-flanging by single-pass incremental forming for 1060 aluminum plate[J]. Forging ＆ Stamping Technology, 2019,44（4）：48-56.

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