Investigation of a combined embossing and blanking process using laser shock wave
Investigation of a combined embossing and blanking process using laser shock wave
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DOI：
10.1007/s12289-014-1171-1
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发表时间：
2015-04
影响因子：
2.4
通讯作者：
Xiao Wang;D. Zhang;C. Gu;Zongbao Shen;Tangbiao Qiu;Y. Gu;Huixia Liu
中科院分区：
文献类型：
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作者：
Xiao Wang;D. Zhang;C. Gu;Zongbao Shen;Tangbiao Qiu;Y. Gu;Huixia Liu
激光冲击成形是一种三维成形技术。在实现精密、可控、低成本、高效率的三维金属微结构方面具有广阔的应用前景。本文采用实验和模拟相结合的方法，研究了铜板的压花和冲裁相结合的工艺，即铜板的压花和冲裁只需一次操作即可完成。为了在一次加工中获得多个零件，实验中采用了重叠的激光光斑。此外，还考虑了激光能量对工件的影响，结果表明，在合适的能量下，模具凸台表面的微观特征能够成功地复制到铜箔的冲裁表面上。通过对表面粗糙度数据的评定，可以看出零件表面可以与模具表面相匹配。同时，还对压花落料组合成形过程进行了数值模拟研究，模拟结果表明，有限元分析能较好地预测零件的最终形状，验证了该工艺的可行性。
Laser shock forming is a three-dimensional forming technique. It is promising for achieving precise, well-controlled, low-cost, high efficiency 3D metallic microstructures. In this research, a combined process of embossing and blanking is studied by experimental and simulation methods, in which the embossing and blanking of copper sheets are performed at the same time in only one operation. In order to obtain multi-workpieces in one process, overlapping laser spots were applied in the experiment. Moreover, the influence of laser energies on the work pieces were considered, and the results show that the micro features on the boss surface of the mold were successfully replicated on the blanking copper foil surface with the suitable energy. By evaluating the surface roughness data, it can imply that the work piece surface can fit the mold surface. Meanwhile, the process of the combined embossing and blanking was also studied by numerical simulation, the simulation results show that the finite element analysis can predict the final shape of work piece properly, verifying the feasibility of this process.