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Use of spatially distributed damper systems in a machine tool

在机床中使用空间分布式阻尼系统

基本信息

批准号：
390684552
负责人：
Professor Dr.-Ing. Christian Brecher
金额：
--
依托单位：
Forschungsbereich Werkzeugmaschinen
依托单位国家：
德国
项目类别：
Research Grants (Transfer Project)
财政年份：
2018
资助国家：
德国
起止时间：
2017-12-31 至 2021-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/390684552?language=en
关键词：
Use spatially distributed damper systems

项目摘要

The dynamic behavior is a deciding factor in modern high-performance machine tools. Mainly for existing machines, passive dynamic auxiliary systems like tuned mass dampers can be used to improve the dynamic compliance by damping specific vibration modes. The advantage of passive systems over active ones is the possibility of a low-cost retrofit due to simple designs and low subsequent costs. Disadvantages include the substantial local mounting space requirements, the iterative and time-consuming commissioning and the vulnerability towards changes in the structural dynamics of the base system.During the first funding period of the preceding research project "Optimal positioning and tuning of multi-mass dampers within a combined topology optimization method", which generated the foundation for this knowledge transfer project, an automated optimal positioning and new analytic tuning method for multi-mass dampers was developed and experimentally verified. By dividing the auxiliary mass over many individually and mutually tuned masses and by spatially distributing them over the structure, the above-mentioned drawbacks of tuned mass dampers shall be alleviated. The effectivity and benefits of multi-mass dampers were successfully verified in a laboratory environment.The goal of this transfer project is to synthesize the gained insights and concepts that were created under academic testing conditions into a product that is suitable for industrial use and which can be tested under operating conditions. Thus, valuable knowledge and insights for further development of the optimal tuning and positioning, especially regarding the process stability, can be fed back into future research.

在现代高性能机床中，动态特性是一个决定性因素。对于现有的机器，可以使用被动动力辅助系统，如调谐质量阻尼器，通过对特定的振动模式进行减振来提高动态柔度。与主动系统相比，被动系统的优势在于，由于设计简单，后续成本较低，因此有可能进行低成本的改造。针对多质量阻尼器局部安装空间需求大、调试迭代且耗时长、易受结构动力学变化影响等缺点，提出了一种多质量阻尼器自动优化定位与调整的新方法，并进行了实验验证。通过将辅助质量划分为多个单独和相互调谐的质量，并将它们空间分布在结构上，调谐质量阻尼器的上述缺点将得到缓解。多质量阻尼器的有效性和效益在实验室环境中得到了成功的验证。该转移项目的目标是将在学术测试条件下获得的见解和概念综合成适合工业使用并可以在操作条件下进行测试的产品。因此，对于进一步发展优化调整和定位，特别是关于过程稳定性的有价值的知识和见解，可以反馈给未来的研究。