FOR 1087: Damping Effects in Machine Tools

随着新的高动态和柔性加工任务的出现，对机床的动态要求越来越高。机床的性能经常被由不利的动态机器行为引起的振动现象所降低。目前，机床动态性能的可靠确定只能在真实的原型上进行，并借助于试验研究。随后的措施，以改善动态行为代表了严重的时间和费用涉及的机床的发展。因此，借助虚拟样机确定激励工具的动态特性越来越成为制造商关注的焦点。通过使用高度开发的软件解决方案和高性能处理器，可以正确计算机床结构的动态行为。然而，大多数计算结果是有缺陷的。其原因在于，没有关于机器部件的阻尼行为的知识，并且缺乏有能力的模型和参数。研究单位的目标是根据其阻尼行为分析最重要的机器部件。基于广泛的测量和合适的模型来描述仿真中的阻尼，该项目将为改善机床动态行为的预测奠定基础。

Todays dynamic demand on machine tools is increasing arithmetically with new highly dynamic and flexible machining tasks. The performance of machine tools is often diminished by vibration phenomena which are caused by adverse dynamic machine behaviour. Currently the reliable determination of the dynamic behaviour of machine tools can only be performed on real prototypes with the help of metrological investigations. Subsequent measures to improve the dynamic behaviour represent a serious time and expense involved in the development of machine tools. For this reason, the determination of the dynamic behaviour of exciting tools with the help of virtual prototypes in recent times is increasingly becoming the focus of manufacturers. By the use of highly developed software solutions and high performance processors the dynamic behaviour of the machine tools structure can be calculated properly. Nevertheless most calculated results are defective. The reason can be find in the fact, that there is no knowledge about the damping behaviour of the machines components and the lack of capable models and parameters. The Research Units target is to analyse the most important machine-components according to their damping behaviour. Based on extensive measurements and suitable models to describe damping in the simulation the project will establish a basis to improve the forecast of the dynamical behaviour of machine tools.