特种成形栏目是由北京机电研究所塑性工程技术中心①赞助刊出
第41卷第9期 Vol. 41No. 9
假
压技
FORGING & STAMPING TECHNOLOGY
连续辊压成形中的起皱缺陷分析
陈庆敏，胡维学，李明哲，蔡中义（吉林大学辑银工艺研究所，吉林长春130025）
2016年9月 Sep-2016
成形。利用数值模拟方法对连续辑压过程中板材的最大压缩率和板材厚度对起皱缺陷的影响进行了研究。研究结果表明，当最大压缩率过大时，凸曲面件中间部位与筱形件边缘易产生起皱缺陷，起皱程度随最大压缩率增加而增大。增大板材厚度，对失稳起皱具有抑制作用。对数值模拟结果进行实验验证，利用PROCMM光学追踪器对实验件进行三维型面测量分析，实验结果证明了模拟结果的正确性。
关键词：板材成形：辑压：PROCMM；起皱；三维曲面 DOI: 10. 13330/j. issn. 1000-3940. 2016. 09, 011
中图分类号：TG335
文献标识码：A
文章编号：1000-3940（2016）09-0052-06
Analysisonthewrinklingincontinuousrollforming
Chen Qingmin, Hu Weixue, Li Mingzhe, Cai Zhongyi
( Roll Forging Research Institute, Jilin University, Changchun 130025, China)
Abstract : 3D continuous roll forming is a new type of sheet metal forming technology. A double curvature part can be formed by a pair of bendable rolls and formed roll gap. The influence of the maximum compression ratio and the thickness of the sheet on the wrinkling defects were studied by numerical simulation method. The results show that when the maximum compression ratio is too large, wrinkling appears on the edges of the saddle surface parts and central area for the eonvex surface parts. Furthermore, the wrinkling degree increases with the increase of the maximum compression natio. Inereasing thickness of the plate can reduce the degree of wrinkling. Experiments were con-ducted to verify the numerical simulation results, and the wrinkling degree of experimental parts were measured and analyzed by PRO
CMM optical tracker equipment. The experimental results show the validity of the simulation results. Key words: sheet metal forming; rolling; PRO CMM; wrinkling; three dimensional surface
曲面连续辊压成形是一种新型的板材柔性成形
收稿日期：20160120；修订日期：20160630 基金项目：国家自然科学基金资助项目（51275202）作奢筒介：陈庆板（1965-），男，学士，工程师 E-mail: chenqm@ jlu edu cn
通讯作者：胡维孚（1989-），男，碳士 E-mail: huwsjlu@ 163. eom
Cui Z, Gao L, La Q J. Incremental forming methods on complicat-ed sheet parts [J]. Chinese: Joumal of Mechanieal Engineering, 2007, 43 (12) : 235 239.
[10]
李敏，张李超，莫键华，等，面向板材渐进成形工艺的单元路径生成.华中科技大学学报：自然科学版，2012，40(1)：15. Li M, Zhang L C, Mo J H, et al. Unit tool-path generation using sheet metal incremental foming process [J].- Joumnal of Huazhong University of Science and Technology: Natural Scienee Edition, 2012, 40 (1) : 1 5.
技术，可以实现三维曲面件的连续、柔性加工，：
在
成形过程中板材产生较大的塑性变形，因此回弹较小，可以通过一套设备成形出不同形状的零件，适用于生产小批量或单件生产，也适用于不同形状大型三维曲面件的成形，具有良好的应用前景
李明哲等在传统卷板与多点成形的基础上，
提
出了连续柔性成形技术，该方法由对称分布的两个
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刘一波，朱虎。基于数控渐进成形的回凸板材件制作研究[J]. 热加工工芝, 2015, 44 (19) : 153 156
Liu Y B, Zhu H. Making research on sheet part with oncave and conves hased on NC incremental forming [J]. Hot Working Tech-Bology, 2015, 44 (19) ; 153 156.
Allwood J M, Bramley A N, Ridgman T W, et al. A nowel method for the rapid production of inexpensive dies and moulds with sur-faces made hy ineremental sheet forming [A]. Proceedings of the Institution of Mechanical Engineers [ C]. London, 2006