锻压技术

面向数控渐进成形鼓包问题的成形轨迹生成与规划

英文标题：Generation and planning of the forming path for bump phenomenon in NC incremental forming

作者：朱虎鞠晋张伟

单位：沈阳航空航天大学

分类号：TG335.5

出版年,卷(期):页码：2015,40(5):15-21

摘要：

针对数控渐进成形中鼓包的问题，提出了基于STL (Sterolithography)模型的等高线轮廓扫描、等高线轮廓与底面扫描、各等高层由外向内全扫描和各等高层由内向外全扫描4种挤压工具扫描运动轨迹类型，并给出了基于STL模型顶点偏置算法和多边形边偏置算法的各类型挤压运动轨迹生成方法；同时,采用有限元分析软件对这4种扫描运动轨迹的数控渐进成形效果进行了数字模拟仿真分析。研究结果表明，采用各等高层由内向外全扫描的轨迹进行数控渐进成形时不发生鼓包现象，并且能够减少制件的整体厚度差。

For the bump phenomenon in the NC incremental forming, four kinds of scanning paths for extrusion tool such as the contour outline scanning path, the contour outline and underside scanning path, the full scanning path from outside to inside by each contour layer, and the full scanning path from inside to outside by each contour layer were put forward based on STL (Sterolithography), and each type of path generation algorithm based on the algorithm of STL model vertex offset and polygon edge offset was given. At the same time, the NC incremental forming effects of the above four scanning paths were simulated by finite element analysis software. The results show that during the CNC incremental forming the bulge phenomenon does not occur by the full scanning path from inside to outside on each contour layer, and the thickness differences in the whole decrease.

基金项目：

国家自然科学基金资助项目(51175351)

朱虎(1964-)，男，博士，教授

参考文献：

［1］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): 2138-2139.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): 2138-2139.
［2］Lu B, Chen J, Ou H, et al. Feature-based tool path generation approach for incremental sheet forming process [J]. Journal Materials Processing Technology, 2013, 213(7): 1221-1233.
［3］Micari F, Ambrogio G, Filice L. Shape and dimensional accuracy in single point incremental forming state of the art and future trends [J]. Journal of Materials Processing Technology, 2007, 191(1-3): 390-395．
［4］Park J J, Kim Y H. Fundamental studies on the incremental sheet metal forming technique [J]. Journal of Materials Processing Technology, 2003, 140(1-3): 447-453.
［5］Rauch M, Hascoet J Y, Hamann J C, et al. A new approach for tool path programming in Incremental Sheet Forming [J]. International Journal of Material Forming, 2008, 1(1): 1191-1194.
［6］Zhu Hu, Lin Wenwen，Bai Jinlan. An overview of the sheet metal CNC incremental forming toolpath generation [J]. Advanced Materials Research, 2012, 503-504: 35-39.
［7］崔震, 高霖, 徐岩,等. 数控渐进成形中的鼓包问题分析[J]. 机械科学与技术, 2008, 27(12): 1581-1585.Cui Z, Gao L, Xu Y, et al. Analyses of the bump phenomenon in sheet metal incremental forming [J]. Mechanical Science and Technology for Aerospace Engineering, 2008, 27(12): 1581-1585.
［8］Qu Xiuzhi, Stucker Brent. A 3D surface offset method for STL-format models [J]. Rapid Prototyping Journal, 2003, 9(3): 133-141.
［9］朱虎，韩福辰，林雯雯. 金属板材件三维激光切割轨迹生成[J].中国激光, 2013, 40(8): 0803007-1-0803007-5.Zhu H, Han F C, Lin W W. Generation of three-dimensional laser cutting path for sheet metal part [J]. Chinese Journal of Lasers, 2013, 40(8): 0803007-1-0803007-05.
［10］Ye X G, Fuh J Y H, Lee K S. A hybrid method for recognition of undercut features from moulded parts [J]. Computer-Aided Design, 2001, 33(14): 1023-1034.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】