Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates
Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates
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DOI：
10.1016/j.ijmachtools.2012.01.001
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发表时间：
2012-05-01
影响因子：
14
通讯作者：
Deger, Burak
中科院分区：
文献类型：
--
作者：
Karpat, Yigit;Bahtiyar, Onur;Deger, Burak
碳纤维增强聚合物（CFRP）在航空航天工业中的使用一直在稳步增长，这是由于其上级的材料性能，例如高强度、低重量、高耐腐蚀性和低热膨胀系数。此外，CFRP零件生产近净形，一个过程，消除了粗加工操作。然而，机加工操作，如钻孔，侧铣，开槽仍然是必要的，使碳纤维增强塑料部件的最终形状。CFRP层合板的加工研究主要集中在钻削方面。关于碳纤维复合材料铣削的研究数量相当有限。在这项研究中，铣削CFRP的机械切削力模型，提出了基于实验收集的切削力数据在单向CFRP层压板使用两种不同的多晶金刚石刀具槽铣削。径向和切向的切削力系数作为纤维切削角的函数计算。该关系用简单的正弦函数表示。所示的机理模型是能够预测铣削过程中的多向CFRP层压板的切削力。铣削力的实验测量和预测的铣削力吻合良好。并进行了表面铣削实验，研究铣削力与表面质量的关系。在此基础上，对CFRP层合板的铣削加工提出了一些建议。(c)2012爱思唯尔有限公司保留所有权利。
Carbon fiber reinforced polymer (CFRP) usage in the aerospace industry has been steadily increasing due to its superior material properties such as high strength, low weight, high resistance to corrosion, and a low thermal expansion coefficient. In addition, CFRP parts are produced near-net-shape, a process that eliminates rough machining operations. However, machining operations such as drilling, side milling, and slotting are still necessary to give the CFRP parts their final shape. A majority of the studies on machining of CFRP laminates are on drilling. The number of studies on milling of CFRPs is quite limited. In this study, a mechanistic cutting force model for milling CFRPs is proposed based on experimentally collected cutting force data during slot milling of unidirectional CFRP laminates using two different polycrystalline diamond cutters. Cutting force coefficients in radial and tangential directions are calculated as a function of fiber cutting angle. The relationship is represented with simple sine functions. The mechanistic model is shown to be capable of predicting cutting forces during milling of multidirectional CFRP laminates. The experimental milling force measurements and predicted milling forces agree well with each other. Surface milling experiments were also conducted to investigate the relationship between milling forces and surface quality. Some suggestions on surface milling of CFRP laminates are given based on these observations. (c) 2012 Elsevier Ltd. All rights reserved.