Use of spatially distributed damper systems in a machine tool

• Applicant: Professor Dr.-Ing. Christian Brecher
• Subject Area: Production Automation and Assembly Technology
• Term: from 2018 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 390684552

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.

• DFG Programme: Research Grants (Transfer Project)
• Application Partner: Dörries Scharmann Technologie GmbH