High-performance tools for machining composite materials
Themes: Process- and Joining Technology, Leichtbau, Mechanical Engineering
In the development of innovative high-performance tools, Gühring pursues a holistic optimization approach in the carbide geometry-surface system.
Based on these principles, tools for manual and mechanical machining of CFRP materials will be presented in the current lecture. In addition to examples of applications for drilling different CFRP variants, the drilling of complex metal CFRP composite structures is considered a particular challenge.
In addition to topics such as avoiding excessively high machining temperatures and delaminations within the fiber structures, the focus of these machining operations is above all on the ideal chip transport.
In general, the investigations presented include both the group of carbide tools and the group of PCD tools.
PCD as a cutting material has advantages with regard to absolutely sharply ground cutting edges, which guarantee a clean cutting through of carbon fibres. Carbide tools, on the other hand, allow tool designs with far more varied and complex geometries.
Recent coating developments for tools made from carbide cutting materials specially optimised for the machining of CFRP allow very considerable performance with their sharp cutting geometries, completely without diamond coating.