曲面辊弯成形的实验研究  

Experimental study on curved surface roll-bending

作　　者：兰英武 胡松景 李鹏 蔡中义[2] Lan Yingwu;Hu Songjing;Li Peng;Cai Zhongyi(Henan Derry New Energy Automobile Co.,Ltd.,Anyang 455000,China;Dieless Forming Technology Center,Jilin University,Changchun 130022,China)

机构地区：[1]河南德力新能源汽车有限公司,河南安阳455000 [2]吉林大学辊锻工艺研究所,吉林长春130022

出　　处：《锻压技术》2021年第6期99-105,共7页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51075186);国家863计划项目(2009AA04Z117)。

摘　　要：为了满足高效地制造单件或小批量的个性化、多样化、大型化的三维曲面钣金零件的市场需求,开发了一种新的柔性成形技术——曲面辊弯成形技术。该工艺采用一个上柔性辊和两个下柔性辊作为成形工具,并可以在垂直方向上调整柔性辊的轴线形状,通过柔性辊的旋转,钣金同时在纵向和横向上发生弯曲,可以实现连续成形。阐述了曲面辊弯成形的原理及其实验装置,进行了典型的双曲面零件——鞍面件和凸面件的成形实验,并利用双目立体视觉测量系统对实验结果进行了测量,分析了成形曲面件的成形精度、光滑度及厚度的变化规律。结果表明:成形曲面件具有良好的精度,成形曲面与所要求的曲面形状吻合良好,为曲面辊弯成形工艺的开发设计提供了一定的参考。In order to meet the market demand for effectively manufacturing of single piece or small batches of personalized, diversified and large-scale sheet metal parts with three-dimensional curved surface, a new flexible forming technology, namely, curved surface roll-bending technology was developed, which used an upper flexible roll and two lower flexible rolls as forming tools and adjusted the axis shape of flexible roll in the vertical direction. The sheet metal parts were bent in both longitudinal and transverse directions simultaneously by the rotation of flexible rolls to realize continuous forming. Then, the principle and experimental device of curved surface roll-bending process were introduced, and the forming experiments of typical hyperboloid parts such as saddle part and convex part were conducted. Furthermore, the experiment results were measured and analyzed by a binocular stereo vision measurement system, and the change laws for forming accuracy, smoothness and thickness of formed curved surface parts were analyzed. The results show that the formed curved surface part has good precision, and the formed curved surface is in good agreement with the required curved surface shape to provide a certain reference for the development and design of curved surface roll-forming process.

关 键 词：辊弯成形 曲面测量 成形精度 表面光滑度 厚度 

分 类 号：TG306[金属学及工艺—金属压力加工]