Mechanistic force coefficient identification is widely used in the machining industry to predict cutting forces accurately, chatter stability diagrams, forced vibrations, and deflection marks left on the finished parts. This paper presents a generalized cutting force coefficient identification model applicable to machining both isotropic (e.g., metal alloys) and anisotropic (e.g., composite) materials. A general mechanics model that applies to any machining operation is used as a basis. The cutting force on the rake face of the tool is expressed as a function of products of force coefficients and uncut chip area, flank wear, and edge contact length. The cutting force coefficients on the rake face can then be extracted from cutting forces collected from any machining test, such as milling, drilling, or turning. The cutting force coefficients are estimated in the frequency domain to consider the dependency on the fiber orientation in composites or the runout effect in isotropic alloys. The modeled cutting force coefficients on the rake face are independent of process kinematics, workpiece material, and cutter geometry. The proposed technique is validated in the milling and drilling metal alloys and CFRP composites.

中文翻译：

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基于FFT的各向同性和各向异性材料统一的机械力系数辨识模型

机械力系数识别广泛应用于机械加工行业，以准确预测切削力、颤振稳定性图、受迫振动以及成品零件上留下的偏转痕迹。本文提出了一种适用于加工各向同性（例如金属合金）和各向异性（例如复合材料）材料的广义切削力系数识别模型。适用于任何加工操作的通用力学模型被用作基础。刀具前刀面上的切削力表示为力系数与未切屑面积、后刀面磨损和刃接触长度的乘积的函数。然后，可以从任何加工测试（例如铣削、钻孔或车削）收集的切削力中提取前刀面上的切削力系数。在频域中估计切削力系数，以考虑对复合材料中纤维取向的依赖性或各向同性合金中的跳动效应。前刀面上的建模切削力系数与加工运动学、工件材料和刀具几何形状无关。所提出的技术在金属合金和 CFRP 复合材料的铣削和钻孔中得到了验证。