采用曲面柔性轧制方法可以实现三维曲面板类件的连续、柔性成形，为了验证该方法的可行性，本文基于曲面柔性轧制原理，设计出成形装置并研究了装置关键部件工作辊的驱动方式，驱动方式可以分为单端与双端两种；进行相关成形实验并对曲面柔性轧制成形工艺进行了分析，探讨了成形过程。结果表明：一次调形成形工艺适用于小变形量情况，成形质量好，效率高；渐进调形成形工艺，以小的压下量逐渐使板料成形，在一定程度上可以消除板料边缘皱褶，减小回弹，利于板料成形；理论上讨论了实时调形成形工艺，该种工艺将会提高成形自动化与效率。对成形件进行了成形精度与厚度分布研究，表明成形效果良好，验证了曲面柔性轧制成形方法的可行性与实用性。
Three dimensional sheet metal parts can be formed continuously and flexibly by the method of surface flexible rolling. To verify the feasibility of the method, the forming device is designed and the critical components, working rolls, driving modes are studied based on the principle of surface flexible rolling. The modes can be divided into two kinds:single-ended and double-ended. The results show that one-step forming process can be used in the case of small amount deformation and will achieve good forming quality and high efficiency. The multi-step forming process makes a small reduction in the sheet metal forming each time gradually and can eliminate the plate edges folding, reduce the rebound conducive to some extent. The real-time forming process which will enhance the flexible rolling forming automation and efficiency is discussed theoretically. The forming precision and thickness distribution of the pieces are favorable.
参考文献
| [1] | 李光耀,王琥,杨旭静,郑刚.板料冲压成形工艺与模具设计制造中的若干前沿技术[J].机械工程学报,2010(10):31-39. |
| [2] | REUTZEL E W,ZHANG L,MICHALERISP.A differential geometry approach to analysis of thermal forming [J]. International Journal of Mechanical Sciences, 2006, 48(10):1046-1062.,2006. |
| [3] | HEMMALI S J,SHINJ G.Estimation of flame param-eters for flame bending process[J]. International Jour-nal of Machine Tools and Manufacture, 2007, 47(5):799-804.,2007. |
| [4] | WANG T,PLATTS M J,LEVERS A.A process mod-el for shot peen forming[J]. Journal of Materials Pro-cessing Technology, 2006, 172(2):159-162.,2006. |
| [5] | WANG T,PLATTS M J.A computer aided blank de-sign method for the peen forming process[J]. Journal of Materials Processing Technology, 2002, 122 (2/3):374-380.,2002. |
| [6] | SHI Yongjun,YAO Zhenqiang,SHEN Hong,et al. Research on the mechanisms of laser forming for the metal plate[J]. International Journal of Machine Tools and Manufacture, 2006, 46(12/13):1689-1697.,2006. |
| [7] | 胡孝昀,沈以赴,李子全,顾冬冬,史长根.金属粉末激光快速成形的工艺及材料成形性[J].材料科学与工艺,2008(03):378-383. |
| [8] | MAO F,MO J H,HUANG S H.Study on instability of the point bolster sheet metal dieless forming [J]. Journal of Materials Processing Technology, 2006, 176 (1/2/3):13-18.,2006. |
| [9] | AMBROGIO G,De NAPOLI L,FILICE L,et al.Ap-plication of incremental forming process for high cus-tomized medical product manufacturing[J]. Journal of Materials Processing Technology, 2005, 162-163:156-162.,2005. |
| [10] | LI Mingzhe, LIU Yuhong, SU Shizong, et al. Multi-point forming:a flexible manufacturing method for a 3-d surface sheet[J]. Journal of Materials Processing Technology, 1999, 87(1/2/3):277-280.,1999. |
| [11] | LI M Z, CAI Z Y, SUI Z, et al. Multi-point forming technology for sheet metal [J]. Journal of Materials Processing Technology, 2002, 129(1/2/3):333-338.,2002. |
| [12] | 李明哲,胡志清,蔡中义,龚学鹏.自由曲面工件多点连续成形方法[J].机械工程学报,2007(12):155-159. |
| [13] | CAI Zhongyi, LI Mingzhe, LAN Yingwu. Three-di-mensional sheet metal continuous forming process based on flexible roll bending:principle and experi-ments[J]. Journal of Materials Processing Technology, 2012, 212(1):120-127.,2012. |
| [14] | HU Z Q, LI M Z, CAI Z Y, et al. Continuous flexible forming of three-dimensional surface parts using bend-able rollers[J]. Materials Science and Engineering A, 2009, 499(1/2):234-237.,2009. |
| [15] | 王鹏飞,张殿华,刘佳伟,王军生,俞小峰.冷轧板形测量值计算模型的研究与应用[J].机械工程学报,2011(04):58-65. |
| [16] | 董永刚,张文志,宋剑锋.钢轨万能轧制过程金属延伸规律的理论与试验研究[J].机械工程学报,2010(06):87-92. |
| [17] | LI Renjun, LI Mingzhe, QIU Ningjia. Development of flexible rolling device for 3D plate [J]. Applied Me-chanics and Materials, 2013, 271-272:852-857.,2013. |
| [18] | 李明哲,蔡中义,李任君,兰英武,邱宁佳.基于弯曲辊轧制的曲面零件连续成形方法[J].机械工程学报,2012(14):44-49. |
| [19] | 胡志清,李明哲,刘家安.三维曲面卷板柔性辊设计与成形工艺分析[J].农业机械学报,2010(04):213-216. |
| [20] | 龚学鹏. 三维曲面板类件的多点滚压成形研究[D].长春:吉林大学, 2010.,2010. |
| [21] | 祝世平,强锡富.工件特征点三维坐标视觉测量方法综述[J].光学精密工程,2000(02):192-197. |
| [22] | 蔡中义,李明哲.三维曲面连续辊压成形的力学机制及弯曲变形的计算[J].机械工程学报,2013(02):35-41. |
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