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提出了一种激光冲击形成飞片,进而驱动飞片直接成形工件的复合工艺。结合剪切模具,使用波长1064nm的Nd:YAG平顶型短脉冲激光束,在厚度为50μm的铜箔上冲击得到高质量飞片,利用高速飞片直接在成形模具上进行塑性成形,获得了具有良好成形效果的胀形件和环形剪切件。对激光冲击驱动飞片复合成形的机理和性能进行了探讨,并对实验过程中出现的现象及问题进行了初步分析。作为一种高效冲压成形方法,不仅拓展了激光微冲击成形技术的应用领域,也为激光驱动飞片加载金属薄板成形微结构等研究提供了参考。
A composite process of forming the flyer by laser shock and driving the flyer directly forming the workpiece is proposed. In combination with a shear die, a high-quality flyer was impacted on a copper foil having a thickness of 50 μm by using a Nd: YAG flat-topped short-pulse laser beam with a wavelength of 1064 nm and subjected to plastic forming directly on a forming die using a high- Bulging and ring shear with good forming effect. The mechanism and performance of laser impact driven flying sheet forming were discussed, and the phenomena and problems in the experiment were analyzed preliminarily. As an efficient stamping method, it not only expands the application field of laser micro-impact forming, but also provides a reference for the research on the microstructure of laser-driven flyer loaded sheet metal.