锻压技术

盒形件增量拉深成形数值模拟及工艺试验

英文标题：Numerical simulation and process testing of box part incremental deep drawing

作者：张庆丰金文中周旭东

分类号：TG302

出版年,卷(期):页码：2011,36(1):34-38

摘要：

为了探索板料增量拉深成形的特点和规律，设计了增量拉深成形轨迹，用Deform-3D模拟软件，对盒形件增量拉深过程进行了数值模拟，分析了凹模圆角半径和凸模进给速度对成形件质量的影响，获得了成形过程中的等效应力和等效应变；并设计了具有双向调节机构的增量拉深模，在Gleeble1500D热模拟试验机上进行了工艺试验验证。结果表明:凹模圆角半径R=1.5 mm、凸模进给速度v=2.5 mm·s-1时能获得高质量的成形件；盒形件的等效应力和应变随着变形程度的增加而增大，最大应力和最大厚度减薄发生在盒形件筒壁直段与凸模圆角相切的部位，此处为零件最易破裂部位。

In order to explore characteristics and laws of the sheet incremental deep drawing， the track of incremental deep drawing was designed and the incremental deep drawing simulation of box was carried out by Deform-3D, then the effects of die radius and punch speed on the formed parts quality were analyzed. The effective stress and effective strain of the forming process were obtained. Finally incremental drawing die with two-way adjusting mechanism was designed and the engineer testing process was proceeded in the Gleeble 1500D heat imitating machine. Results indicate that a high-quality formed part is got if die corner radius is 1.5 mm and punch feed rate is 2.5 mm·s-1; the effective stress and strain of the box increase with the increase of deformation degree, maximum stress and minimum thickness of the thinning occur in the tangent position between straight section of tube wall and punch corner of box, where the parts are easy to be broken.

基金项目：

河南省教育厅基础研究基金资助（200410464013）

参考文献：

［1］ Nakagawa. Advances in prototype and low volume sheet forming and tooling [J].Journal of Materials Processing Technology,2000,98(4):244-250.
［2］ Jeswiet J, Micari F, Hirt G,et al.Asymmetric single point incremental forming of sheet metal[J].CIRP Annals Manufacturing Technology, 2005, 54(2):623-649.
［3］ Verbert J, Belkassem B, Henrard C,et al. Multi-Step toolpath approach to overcome forming limitations in single point incremental forming[J].International Journal of Material Forming,2008,1(1):203-206.
［4］张庆丰，贾平，周旭东.板料增量成形的研究进展[J].锻压技术,2009,34(4):65-68.
［5］ Saotome Y,Okamoto T.An in-situ incremental microforming system for three-dimensional shell structures of foil materials[J]. Journal of Materials Processing Technology, 2001,113(6):636-640.
［6］ Tanaka S,Nakamura T.Miniature incremental forming of millimeter-sized thin sheet structures [A]. Proceeding of the 7th ICTP[C].Yokohama: K Hayakawa ,2002.
［7］ David Young. Formability in computer numerically controlled single point incremental forming [D]. Canada: Queens University, 2003.
［8］ Verbert J,Belkassem B,Henrard C,et al. Multi-Step toolpath approach to overcome forming limitations in single point incremental forming[J].International Journal of Material Forming,2008,1(1):203-206.
［9］ Talebaraghi B,Manco G L, Bambach M, et al. Investigation into a new hybrid forming process: Incremental sheet forming combined with stretch forming[J].CIRP Annals Manufacturing Technology, 2009,58(1) :225-228.
［10］ Bambach M, TalebAraghi B, Hirt G. Strategies to improve the geometric accuracy in asymmetric single point incremental forming[J].Production Engineering，2009,3(2):145-156.

［11］ Meier H,Buff B, Laurischkat R,et al.Increasing the part accuracy in dieless robot-based incremental sheet metal forming[J].CIRP Annals Manufacturing Technology, 2009,58(1) : 233-238.
［12］夏琴香，阮锋，岛进,等.杯形件的单道次拉深旋压成形工艺研究[J].锻压技术,2002,27(6):42-45.
［13］贾俐俐，高锦张，郑勇，等. 金属直壁筒形件数控增量成形工艺研究[J]. 锻压技术,2006,26(5):133-135.
［14］贾俐俐，王书鹏，高锦张.基于挖槽方式的直壁件增量成形方法[J]. 锻压技术,2008,33(4):29-33.
［15］李湘吉，李明哲，蔡中义.板料单点渐进成形数值模拟研究[J].锻压技术,2009,34(4):79-82.
［16］周六如.基于数控渐进成形技术的方形盒成形工艺[J]. 锻压技术,2009,34(4):65-68.
［17］周六如.基于数控渐进成形技术的翼子板成形工艺[J]. 锻压技术,2010,35(2):47-49.
［18］胡世光.钣料冷压成形的工程解析[M].北京：北京航空航天大学出版社出版，2009 .

服务与反馈：

【文章下载】【加入收藏】