Prediction of the position dependent dynamic behavior of a machine tool considering local damping effects
Prediction of the position dependent dynamic behavior of a machine tool considering local damping effects
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DOI：
10.1016/j.cirpj.2019.08.001
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发表时间：
2019-11-01
影响因子：
4.8
通讯作者：
Zaeh, M. F.
中科院分区：
文献类型：
--
作者：
Semm, T.;Rebelein, C.;Zaeh, M. F.
机床在不同的轴位置上经常表现出变化的动态特性。本文提出了一种方法，以准确地建模的位置相关的动态，同时保持计算时间小。机器被分成缩小的子结构，并组装在所需的轴位置。由此产生的模型，它考虑了局部阻尼行为，耦合摩擦和控制模型，调查局部阻尼效应。在不同的机器位置与测量的三轴机床的模拟动态行为的比较表明，如果当地的阻尼参数是已知的，准确地预测的动态行为的能力。(C)2019年CIRP。
Machine tools often show a changing dynamic behavior for different axis positions. This paper presents an approach to accurately model the position dependent dynamics, while keeping the calculation times small. The machine is divided in reduced substructures and assembled at the desired axis positions. The resulting model, which considers the local damping behavior, is coupled with friction and control models to investigate local damping effects. A comparison of the simulated dynamic behavior in different machine positions with measurements of a three-axis machine tool shows the ability to accurately predict the dynamic behavior if the local damping parameters are known. (C) 2019 CIRP.