锻压技术

金属板料单点渐进成形下压点分散的等高线混合成形轨迹生成

英文标题：Generation of contour-mixed forming trajectories of the pressure points dispersion under single point incremental forming for sheet metal

作者：周建宇杨明顺李言袁启龙徐青李韩博

单位：西安理工大学

关键词：单点渐进成形数控渐进成形表面质量成形轨迹等高线混合成形轨迹

分类号：TG335

出版年,卷(期):页码：2017,42(2):38-44

摘要：

等高线成形轨迹是现行金属板料单点渐进成形的主要加工方式。针对板料渐进成形过程中由于成形工具头挤压造成的工具头下压点过于集中产出的成形件局部凹陷、破裂及成形件整体扭曲和板厚分布不均匀等问题，提出了一种结合商业Unigraphics NX 10.0（UG 10.0）软件轮廓铣削加工中混合加工策略和沿部件斜进刀方式结合的金属板料单点渐进成形等高线成形轨迹生成的方法。Abaqus有限元数值模拟和实验分析表明，使用上述方法成形的成形件不仅避免了成形表面局部凹陷和破裂问题，还解决了成形件整体扭曲和板厚分布不均匀等问题。

Contour forming trajectory is the main way of single point incremental forming for sheet metal. For the problems of local sag, rupture, whole distortion and uneven thickness distribution produced by tool head extrusion leading to the concentrated tool head landing points in sheet metal incremental forming, it is proposed that the trajectory generation of single point incremental forming for sheet metal combining mix processing strategy in the contour milling and bevel angle feeding type along the sheet metal based on Unigraphics NX10.0（UG 10.0）. Abaqus finite element numerical simulation and experimental analysis show that the problems of local sag, local surface depressions or corrugations as well as overall distortion and uneven thickness distribution are both avoided by the above forming method.

基金项目：

国家自然科学基金资助项目（50975229）；陕西省科技计划项目（2016JM5074）

周建宇（1991-），男，硕士研究生杨明顺（1974-），男，博士，副教授

参考文献：

［1］张勇, 李鹏阳, 王权岱,等. 基于ABAQUS的单点增量成形的数值分析[J]. 机械强度, 2015,37(1):99-103.Zhang Y, Li P Y, Wang Q D, et al. Based on ABAQUS single point incremental forming numerical analysis [J]. Journal of Mechanical Strength, 2015,37(1):99-103.
［2］李华溢, 朱虎, 刘一波,等. 数控渐进成形下压点分散的等高线成形轨迹生成[J]. 机床与液压, 2015, 43(17):32-34.Li H Y, Zhu H, Liu Y B, et al. Generation of underdraught points dispersed contour forming path for NC incremental forming [J]. Machine Tool & Hydraulics, 2015, 43 (17): 32-34.
［3］Araghi B T, 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.
［4］Malhotra R, Reddy N V, Cao J. Automatic 3D spiral toolpath generation for single point incremental forming[J]. Journal of Manufacturing Science & Engineering, 2010, 132(6):885-896.
［5］Lu B, Chen J, Ou H, et al. Feature-based tool path generation approach for incremental sheet forming process[J]. Journal of Materials Processing Technology, 2013, 213(7):1221-1233.
［6］朱虎, 扶建辉, 姜在宽. 金属板材数控渐进成形螺旋线轨迹生成[J]. 农业机械学报, 2009, 40(10):223-226.Zhu H, Fu J H, Jiang Z K. Generation of spiral tool path for sheet metal CNC incremental forming [J]. Transactions of the Chinese Society for Agricultural Machinery, 2009, 40 (10): 223-226.
［7］李丽华. 板料点压渐进成形的成形性能研究[J]. 锻压技术, 2015, 40(1):51-55.Li L H. Research on forming performance of pressing point incremental forming for sheet metal [J]. Forging & Stamping Technology, 2015, 40 (1): 51-55.
［8］毛锋. 金属板材数控渐进成形关键技术研究[D]. 武汉：华中科技大学, 2005.Mao F. Research on Key Technology of NC Incremental Forming of Sheet Metal [D]. Wuhan：Huazhong University of Science and Technology, 2005.
［9］莫健华, 丁勇, 黄树槐. 金属板材数控单点渐进成形加工轨迹优化研究[J]. 中国机械工程, 2003, 14(24):2138-2140.Mo J H, Ding Y, Huang S H. Research on tool-path optimization of sheet metal numerical control single point incremental forming [J]. China Mechanical Engineering, 2003, 14 (24): 2138-2140.
［10］Yamashita M, Gotoh M, Atsumi S Y. Numerical simulation of incremental forming of sheet metal [J]. Journal of Materials Processing Technology, 2008, 199:163-172.

服务与反馈：

【文章下载】【加入收藏】