Numerical Prediction of Static Form Errors in Peripheral Milling of Thin-Walled Workpieces With Irregular Meshes

Author:

Wan Min1,Zhang Weihong1,Qiu Kepeng1,Gao Tong1,Yang Yonghong2

Affiliation:

1. Sino-French Laboratory of Concurrent Engineering, School of Electromechanics, Northwestern Polytechnical University, P.O. Box 552, 710072 Xi’an, Shaanxi, China

2. Xi’an Aircraft International Corporation, 710089 Xi’an, Shaanxi, China

Abstract

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.

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering

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