Start of the research project »Influence of tool clamping devices«


Start of the research project »Influence of tool clamping devices«

In February the research project »Influence of tool clamping devices on the workpiece quality in shear cutting and deep drawing processes« was initiated.

The variation of the type and number of clamping devices changes certain properties of the tool such as the rigidity and vibration behaviour. Based on scientific investigations it is known that the tool rigidity has an influence on the achievable part quality. Furthermore, tool vibrations affect the punch wear. Nevertheless, neither tool manufacturers nor providers of clamping devices offer technically concrete and clear instructions for the design of the tool clamping situation. The issue of the impact of the tool clamping situation on the forming process is not investigated yet. At the same time it offers great potential for process optimization.

The aim of the research project is to measure and evaluate the influences of tool clamping systems on process variables in deep drawing and shear cutting processes. The analysis of this influence will be used for the systematic selection of suitable clamping devices. In addition, the possibilities and limitations of an innovative, magnetic tool clamping system – to influence the tool bahaviour and to optimize the process quality – will be shown.

To achieve the desired research results the tool geometry and tool vibration are determined by measurement during the forming process. Furthermore, the component quality is investigated. By varying the tool clamping situation and by the comparison with a reference state, the context of the clamping situation and the impact on the process can be indicated.

The results of the project are included in a leaflet, in which – depending on for example the tool size or process requirements – guidelines for the use of tool clamping devices will be given. The leaflet will be available to industry and is used in particular to secure the competitiveness of SMEs.

The research project is funded by the German Federation of Industrial Research Associations (AiF).

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