Surface shape prediction in high speed milling
Surface shape prediction in high speed milling
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DOI：
10.1016/j.ijmachtools.2004.06.005
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发表时间：
2004-12
影响因子：
14
通讯作者：
H. Paris;G. Peigné;R. Mayer
中科院分区：
文献类型：
--
作者：
H. Paris;G. Peigné;R. Mayer
颤振是影响加工零件表面质量的主要原因之一。由于这种情况发生在加工工艺不稳定时，因此选择可促进稳定性的工艺参数非常重要。然而，仅此条件不足以确保良好的表面形状，因为整个加工系统的动态也会影响最终的表面。因此，即使没有颤振，工具或零件也可能发生显着移动，从而导致表面缺陷。这种效果在高速铣削中非常显着。为了选择最佳加工参数，基于新型加工表面生成模型开发了一种计算高效的模拟器，能够准确可靠地预测表面形状。用 MATLAB® 编写的程序可预测表面形状，从而确定表面光洁度、波纹度、形状和位置参数。由频率相对较低的二阶动态模式组成的测试台用于容纳测试样本。在加工中心上获得的结果表明，预测结果与实验结果相比较。
Chatter is one of the main causes affecting the surface quality of machined parts. Since it occurs when a machining process is unstable, it is important to select process parameters that promote stability. However, this condition alone is not sufficient to ensure good surface shape because the dynamics of the machining system as a whole also affects the resulting surface. Thus, even in the absence of chatter, significant movement of the tool or the part may occur causing surface defects. This effect is significant in high speed milling. In order to select optimal machining parameters, a computationally efficient simulator has been developed based on a novel machined surface generation model capable of accurate and reliable prediction of the surface shape. The programme written in MATLAB®predicts the surface shape from which surface finish, waviness, form and position parameters can be determined. A test bench consisting of a relatively low frequency second order dynamic mode is used to hold a test sample. The results obtained on a machining centre show that the predictions favourably compare with experimental results.