文章提出一种基于预测加工理论的三维车削分析力模型，采用非等距剪切区模型，将工件材料属性、刀具几何形状和切削条件作为输入数据。在该模型中，刀具的真实切削刃被分解为一系列微元切削体，微元的切削作用相当于斜角切削过程，其边界条件是相邻切屑单元之间的相互作用使所有切屑单元沿同一方向流动。

该文章基本信息如下：

标题：An analytical force mode applied to three-dimensional turning based on a predictive machining theory

作者：Zhongtao Fu;Xubing Chen;Jincheng Mao;Tao Xiong

摘要：Cutting forces play an important role in the three-dimensional turning processes and are commonly calculated by the mechanistic or empirical models which are considered time-consuming and impractical for various cutting conditions and workpiece-tool pair. Therefore, this paper proposes an analytical force model in three-dimensional turning based on a predictive machining theory, which adopts the non-equidistant shear zone model and regards the workpiece material properties, tool geometry and cutting conditions as the input data. In this model, the real cutting edge of the turning tool is decomposed into a series of infinitesimal cutting elements and the cutting action of which is equivalent to the oblique cutting process with the imposed condition that all chip elements flow in the same direction on account of the interaction between adjacent chip ones. Consequently, the cutting force components applied on each cutting element can be calculated using a modified version of predictive oblique cutting model and the total cutting forces are obtained by summing up the forces contributed by all cutting elements. Finally, the global and local chip flow angles are investigated under various conditions of tool geometry (edge inclination angle, lead angle, nose radius) and cutting parameters (depth of cut, feed, cutting velocity) in this model. Furthermore, a detailed parametric study is provided by the proposed analytical model of cutting forces in order to analyze the influences of cutting parameters and tool geometry on cutting forces, which are verified respectively by the experimental data. Good agreement shows the effectiveness of the proposed analytical model.

期刊：International Journal of Mechanical Sciences.