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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.2; 20051026-28; Nanjing(CN) >Virtual Machining Process of Peripheral Milling of Thin-walled Workpiece
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Virtual Machining Process of Peripheral Milling of Thin-walled Workpiece

机译：薄壁工件外围铣削的虚拟加工工艺

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摘要

Thin-walled workpiece is easy to deform in machining. In order to predict the dimensional error of machined surface of thin-walled workpiece, computer simulation technology is studied, which is called virtual machining process. For the simulation of workpiece deformation, much numerical analysis should be done. Research indicates using FEA (Finite Element Analysis) in each step of simulation process needs too much time to meet the requirements of industrial application. Therefore it is important to decrease the simulation time. In this paper, a new method is proposed to realize rapid analysis of workpiece deflection in virtual machining process, which combines rapid analytical solution method with a few times of accurate FEA, thus greatly decreases the time required for whole simulation. For the simulation, several peripheral milling process models are presented with increasing order of sophistication and accuracy, which can be applied to simulate cutting process with the effect of workpiece deformation caused by cutting force. In the final section, the comparison between simulation results and experiments shows the proposed methods and models can closely predict dimensional error and texture of machined surface of flexible workpiece.
机译：薄壁工件在加工中容易变形。为了预测薄壁工件加工表面的尺寸误差，研究了计算机仿真技术，称为虚拟加工过程。为了模拟工件变形，应进行大量数值分析。研究表明，在仿真过程的每个步骤中使用FEA（有限元分析）需要太多时间才能满足工业应用的要求。因此，减少仿真时间很重要。本文提出了一种在虚拟加工过程中实现工件变形快速分析的新方法，该方法结合了快速解析解方法和几次精确的有限元分析，从而大大减少了整个仿真所需的时间。为了进行仿真，提出了几种周向铣削加工模型，其复杂程度和精确度从高到低，可以将其用于模拟切削过程，并受切削力引起的工件变形的影响。最后一部分，仿真结果和实验结果的比较表明，所提出的方法和模型可以精确地预测柔性工件的加工表面尺寸误差和纹理。

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