网站首页期刊简介编委会过刊目录投稿指南广告合作征订与发行联系我们English
基于STL模型的数控渐进成形模型姿态确定
英文标题:Determination of model posture in CNC incremental forming based on STL model
作者:朱虎 张伟 鞠晋  
单位:沈阳航空航天大学 
关键词:板材成形 数控渐进成形 模型姿态 
分类号:
出版年,卷(期):页码:2015,40(4):74-78
摘要:

针对数控渐进成形中板材件容易破裂、厚度不均问题,提出了一种基于STL (S Tereo Lithography)模型的数控渐进成形件模型姿态确定方法。在根据各三角面片的成形角大小差异对三角面片进行筛选的基础上,利用成形角和成形件厚度的关系,通过定量计算各个三角面片的成形角之差来确定模型绕X轴和Y轴的旋转角度,并调整待成形件模型姿态,进而确保各三角面片的成形角之差最小,从而实现数控渐进成形中板材件厚度的均匀化。算法应用实例表明,模型姿态调整后板材件厚度分布更加均匀且厚度差明显减小,厚度差减小幅度为0.413 mm。

For problems of the easy broken of sheet metal parts and the uneven thickness in Computer Numerical Control (CNC) incremental forming, a determination method of the model posture in CNC incremental forming based on the STL (S Tereo Lithography) model was proposed. After screening the triangular facets by different forming angles, using the relationship between the thickness of the sheet metal parts and the forming angles, and calculating the difference of forming angle of triangular facets quantificationally to determine the rotation angles of the model that rotating the X-axis and Y-axis, the model posture of sheet metal part was adjusted to ensure the minimum difference of forming angles between triangular facets and to realize the even thickness in sheet metal parts. The application examples of algorithm show that the thickness distribution becomes more even and small thickness differences are obtained after adjusting the model posture. As a result, the decreasing amplitude of thickness difference is 0.413 mm.

基金项目:
辽宁省自然科学基金资助项目(2014024011)
作者简介:
朱虎(1964-),男,博士,教授
参考文献:

[1]Tisza M. General overview of sheet incremental forming [J]. Journal of Achievements in Materials and Manufacturing Engineering, 2012, 55(1): 113-119.


[2]王耿,王进,姜虎森,等.工具转速和进给速度对数控渐进成形温升影响[J]. 锻压技术,2014,39(11):29-32.


Wang G,Wang J,Jiang H S,et al. Influence of rotational speed and feed speed on temperature rise in NC rotational incremental sheet forming [J]. Forging & Stamping Technology,2014,39(11):29-32.


[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]蔡改贫,陈宗玉,姜志宏. 金属板材渐进成形中局部纵向力的分析[J].锻压技术, 2014, 39(9): 31-35.


Cai G P,Chen Z Y,Jiang Z H. Analysis on local vertical force during the process of sheet metal incremental forming [J]. Forging & Stamping Technology, 2014, 39(9): 31-35.


[5]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.


[6]冯帆,高锦张,贾俐俐,等. 直壁筒形件凸模支撑渐进成形工艺的数值模拟[J]. 锻压技术,2014,39(2):46-52.


Feng F,Gao J Z,Jia L L,et al. Numerical simulation for male die supporting incremental forming process of vertical wall cylinder [J]. Forging & Stamping Technology,2014,39(2):46-52.

 

服务与反馈:
本网站尚未开通全文下载服务】【加入收藏
《锻压技术》编辑部版权所有

中国机械工业联合会主管 北京机电研究所有限公司 中国机械工程学会塑性工程分会主办
联系地址:北京市海淀区学清路18号 邮编:100083
电话:+86-010-82415085 传真:+86-010-62920652
E-mail: fst@263.net(稿件) dyjsjournal@163.com(广告)
京ICP备07007000号-9