Abstract Mechanistic cutting force models are commonly used to compute milling forces in terms of the machining parameters such as feedrate, axial, and radial depths of cut. In isotropic (e.g. metallic) materials, the parameters of mechanistic models are treated as constants which which are identified using well-established experimental procedures. Mechanics of chip formation in anisotropic Carbon Fibre Reinforced Polymers (CFRP) varies depending on fibre cutting angle, which continuously changes as the tool rotates in milling operations. To address this variation, a mechanistic model with parameters that depend on fibre cutting angle is proposed. Also, a new experimental method is presented to identify the parameters of the proposed model. The model parameters are assumed to be periodic functions of fibre cutting angle, and the Fourier coefficients of the periodic function are identified from the milling forces measured during a set of milling operations at various feedrates and fibre orientations. The experimental validation of the presented force modelling approach confirms its accuracy to predict forces in milling of Unidirectional as well as Multi-directional CFRP.

中文翻译：

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碳纤维增强聚合物铣削切削力的建模与识别

摘要 机械切削力模型通常用于根据加工参数（例如进给率、轴向和径向切削深度）计算铣削力。在各向同性（例如金属）材料中，机械模型的参数被视为常数，这些常数是使用完善的实验程序确定的。各向异性碳纤维增强聚合物 (CFRP) 中的切屑形成机制因纤维切削角度而异，纤维切削角度随着刀具在铣削操作中旋转而不断变化。为了解决这种变化，提出了一种具有取决于光纤切割角度的参数的机械模型。此外，还提出了一种新的实验方法来确定所提出模型的参数。假设模型参数为纤维切割角的周期函数，周期函数的傅立叶系数是根据在不同进给率和纤维方向的一组铣削操作期间测量的铣削力确定的。所提出的力建模方法的实验验证证实了其预测单向和多向 CFRP 铣削力的准确性。