Numerical Prediction of Static Form Errors in Peripheral Milling of Thin-Walled Workpieces With Irregular Meshes
Numerical Prediction of Static Form Errors in Peripheral Milling of Thin-Walled Workpieces With Irregular Meshes
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DOI：
10.1115/1.1828055
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发表时间：
2005-02
影响因子：
4
通讯作者：
M. Wan;Weihong Zhang;K. Qiu;T. Gao;Yonghong Yang
中科院分区：
文献类型：
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作者：
M. Wan;Weihong Zhang;K. Qiu;T. Gao;Yonghong Yang
本文研究了复杂薄壁工件外铣削静形误差的有限元计算公式。研究了铣削过程中刀具建模、切削力有限元离散化、刀具-工件耦合及工件刚度变化等关键问题。为了能够预测复杂形状加工表面的静态形状误差，在铣削过程中材料去除的适当建模和刀具-工件挠度的迭代计算方面进行了大量改进。提出了一种基于三维不规则有限元网格的通用仿真方法。通过算例，将刚性模型和柔性模型与已有模型进行了比较，验证了该方法的有效性。
The finite element formulation is studied in this paper to predict static form errors in the peripheral milling of complex thin-walled workpieces. Key issues such as cutter modeling, finite element discretization of cutting forces, tool-workpiece coupling and variation of the workpiece 's rigidity in milling are investigated. To be able to predict static form errors on the machined surface of complex form, considerable improvements are made on the proper modeling of the material removal in milling and the iterative calculations of tool-workpiece deflections. A general simulation approach is developed based on 3D irregular finite element meshes. By using illustrative examples, rigid and flexible models are compared with existing ones to show the validity of the approach.