锻压技术

基于MSC.Marc的板材多点渐进成形路径的有限元分析

英文标题：FEM analysis for the path of plate in the multi-point incremental forming based on MSC.Marc

作者：蔡改贫周小磊王俊朱宏亮

单位：江西理工大学

分类号：

出版年,卷(期):页码：2014,39(10):63-67

摘要：

针对金属板材单点渐进成形中受力不均、易引起各种失稳且耗时长等问题，本文在金属板材多点复合渐进成形的基础上，提出了方锥台制件的两种加工路径。通过建立路径1和路径2的有限元模型，设定合理的工艺参数，再对成形件的等效塑性应变、成形精度、壁厚等模拟结果的对比分析表明，较路径2而言，板材以路径1方式进行成形时所获得的最大等效塑性应变较小、相邻塑性应变变化量小、变形更均匀，所得到的制件底部鼓包小、与理论轮廓偏离小、外形精度较高，所获取的制件的最小壁厚更大、壁厚更均匀，路径1更适合金属板材多点复合渐进成形。

For the problems of uneven load in single point incremental forming (SPIF) that caused various instability and time-consuming, two kinds of paths processing on truncated pyramid-shaped workpieces were presented on the basis of plate multi-point composite incremental forming (MPCIF). The reasonable process parameters were set by establishing two finite element models on path 1 and path 2. The simulated results of equivalent plastic strain, forming precision and wall thickness of deformed parts with path 1 and path 2 are compared and show that plate with path 1 can obtain smaller values of the maximum equivalent plastic strain and change quality of plastic deformation, more uniform wall thickness, smaller bulge in the bottom of the specimen and deviation from the theoretical outline, better shape accuracy, larger value of the minimum wall thickness and more uniform. Therefore, path 1 is more suitable for MPCIF.

基金项目：

国家自然科学基金资助项目（50975131）

蔡改贫（1964-），男，博士，硕士生导师

参考文献：

[1]Micari F, Ambrogio G, Filice L. Shape and dimensional accuracy in single point incremental Forming: state of the art and future trends[J]. Mater. Process Technol.,2007,191(1-3):390-395.

[2]Kochan A. Dieless forming[J]. Assemb. Automa., 2001, 21(4):321-322.

[3]岗野广之, 吕言. 3次元デジタル制御技术－－ダイレスNCフォミングの现状[J]．塑性と加工，2004，45(526):2-6．

Okano Heruyoki,Lv Y.State of the dieless NC forming research on three-dimensional digital control technology[J].Plasticity and Forming,2004,45(526):2-6.

[4]Jeswiet J,Micari F, Hirt G, et al. Asymmetric single point incremental forming of sheet metal[J]. CIPR Annals-Manufacturing Technology,2005,54(2): 623-650.

[5]松原茂夫. 板材の逐次张出し·绞り成形[A].平成７年度塑性加工春季讲演会论文集[C]. 东京, 1995.

Matsuhara Shigeo.Sheet sequential forming·Mixed forming[A].The Proceedings of Plastic Processing Spring Lecture at HeiSei 7 year[C].Tokyo,1995.

[6]李密, 秦勤, 吴迪平, 等.刀具路径对单点渐进成形的影响[J].机电产品开发与创新, 2008，(2):148-149.

Li M, Qin Q, Wu D P, et al.The influence of cutting tool path of single point incremental forming [J]. Development & Innovation of Machine,2008，(2):148-149.

[7]王进, 姜虎森, 陶龙, 等. 板料渐进成形极限图测试方法研究[J]. 锻压技术, 2013,38(2):34-39.

Wang J, Jiang H S, Tao L, et al.Study on experimental method of measuring forming limit diagram in incremental sheet forming [J].Forging & Stamping Technology , 2013,38(2):34-39.

[8]Fu Z M，Mo J H, Han F, et al.Tool path correction algorithm for single-point incremental forming of sheet metal[J]. Int. J. Adv. Manuf. Technol., 2013,64:1239-1248.

[9]Erman Tekkaya A, Ravi Shankar, Gerd Sebastiani, et al. Surface reconstruction for incremental forming[J].Prod.Eng. Res. Devel.,2007, 1:71-78.

[10]蔡改贫, 朱宏亮, 姜志宏, 等.板材多点对称式渐进成形过程模拟研究[J].锻压技术,2012,37(6):26-29.

Cai G P, Zhu H L, Jiang Z H, et al. Simunation research on plate multi-point symmetric type incremental forming process[J]. Forging & Stamping Technology,2012,37(6):26-29.

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