The feasibility of fast slotting thick CFRP laminate using fiber laser-CNC milling cooperative machining technique
The feasibility of fast slotting thick CFRP laminate using fiber laser-CNC milling cooperative machining technique
复制标题
光纤激光-数控铣协同加工技术快速开槽厚CFRP层合板的可行性
DOI：
10.1016/j.optlastec.2021.107794
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发表时间：
2022-05-01
影响因子：
5
通讯作者：
Yang, Xujing
中科院分区：
文献类型：
--
作者：
Chen, Limei;Li, Maojun;Yang, Xujing
由于碳纤维与树脂基体热性能的显著差异，在激光切割CFRP复合材料时不可避免地会产生热损伤，严重影响复合材料结构的装配精度和使用性能。本文提出了一种新型光纤激光-数控铣削协同加工10.0 mm厚CFRP板的工艺，该工艺综合了大功率激光切割加工效率高、材料去除率高、铣削表面质量好、切割余量小、切割速度快的优点。全面研究了不同加工策略/方法、切削参数和热损伤对表面质量和形貌的影响。热缺陷包括裂纹、条纹、纤维突出和基体衰退，是激光加工CFRP厚板的主要损伤。激光-数控铣削协同加工技术成功开槽10.0 mm厚CFRP板，无热损伤和切口角，表面粗糙度（Sa）降至5.4 μ m。实验结果表明，该协同加工技术是开槽厚CFRP板的一种替代方法，具有较高的质量和效率。
Thermal damage is inevitable during laser cutting CFRP laminates due to significantly different thermal properties between carbon fiber and resin matrix, which severely affects the assembly accuracy and service performance of composite structures. This work proposed a newly designed fiber laser-CNC milling cooperative machining technique to slot 10.0 mm thick CFRP plates, it integrated the advantages of high efficiency and high material removal rate during high-power laser cutting process, together with good surface quality in milling with limited cutting allowance and high cutting speed. The influence of different machining strategy/method, cutting parameters and thermal damage on surface quality and morphology were comprehensively investigated. Thermal defects including cracks, striations, protruding fibers and matrix recession were the main damage during laser processing thick CFRP laminates, while laser-CNC milling cooperative machining technique successfully slotted 10.0 mm thick CFRP plate without thermal damage and kerf angle with the surface roughness (Sa) down to 5.4 mu m. Experimental results from this work indicated that the proposed cooperative machining technique was an alternative method for slotting thick CFRP laminates with superior quality and efficiency.