Continuous sheet metal forming for doubly curved surface parts
Continuous sheet metal forming for doubly curved surface parts
复制标题
双曲面零件的连续钣金成形
DOI：
10.1007/s12541-012-0263-4
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发表时间：
2012-11-01
影响因子：
1.9
通讯作者：
Wang, Mi
中科院分区：
文献类型：
--
作者：
Cai, Zhong-Yi;Lan, Ying-Wu;Wang, Mi
板料连续成形是一种新型的双曲面板料成形技术。该工艺采用一个上柔性辊和两个下柔性辊作为成形工具，随着柔性辊的旋转，板材同时在纵向和横向上弯曲。介绍了CSMF系统的基本原理，建立了CSMF过程控制的基本数学模型。通过对板料纵向变形的分析，得到了确定板料最终曲率和估算上辊向下位移的公式。进行了圆环面和马鞍面的成形实验。对零件的尺寸精度和光洁度进行了测量和分析。实验结果验证了所建立的数学模型的正确性，表明CSMF可以有效地应用于双曲面零件的成形。
Continuous sheet metal forming (CSMF) is a novel technology for manufacturing doubly curved sheet metal parts. In this process, an upper flexible roll and two lower flexible rolls are employed as a forming tool, with the rotation of flexible rolls, the sheet metal is bent in the longitudinal and transverse directions simultaneously. In this study, the basic principle of CSMF system is introduced and the basic mathematical model to control the CSMF process is presented. Based on the analysis of the sheet metal deformation in longitudinal direction, the formulations to determine the finial curvature of the deformed sheet metal and to estimate the downward displacement of upper roll are obtained. Forming experiments for torus-shaped surface and saddle-shaped surface were carried out. The dimensional accuracy and smoothness of the CSMF parts were measured and analyzed. The experiment results confirm the validity of the presented mathematical models and shows that CSMF can be effectively used in forming of doubly curved surface parts.