Stability prediction for milling process with multiple delays using an improved semi‐discretization method
Stability prediction for milling process with multiple delays using an improved semi‐discretization method
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DOI：
10.1002/mma.3543
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发表时间：
2016-03
影响因子：
2.9
通讯作者：
G. Jin;H. Qi;Yujun Cai;Qichang Zhang
中科院分区：
文献类型：
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作者：
G. Jin;H. Qi;Yujun Cai;Qichang Zhang
铣削颤振导致表面光洁度差、刀具过早磨损以及对机床或刀具的潜在损坏。因此，期望预测和避免这种不稳定性的开始。考虑到变螺距铣削或刀具跳动情况下的稳定性具有多时滞的特点，提出了一种改进的半离散化方法来预测多时滞铣削过程的稳定性波瓣。以变螺距铣削为例，通过与已有方法的比较，验证了该方法在低径向浸入比和高径向浸入比下的稳定性预测精度和效率。此外，所提出的方法的收敛速度也进行了评估。结果表明，该方法具有较高的计算效率.版权所有© 2015约翰威利父子有限公司
Milling chatter leads to a poor surface finish, premature tool wear, and potential damage to the machine or tool. Thus, it is desirable to predict and avoid the onset of this instability. Considering that the stability of milling with variable pitch cutter or tool runout case is characterized by multiple delays, in this paper, an improved semi‐discretization method is proposed to predict the stability lobes for milling processes with multiple delays. Taking the variable pitch milling, for example, a comparisonwith prior methods is conducted to verify the accuracy and efficiency of the proposed approach for the stability prediction both in low and high radial immersion ratios. In addition, the rate of convergence of the proposed method is also evaluated. The results show that the proposed method has high computational efficiency. Copyright © 2015 John Wiley & Sons, Ltd.