The machining of carbon fiber reinforced polymer (CFRP) can cause damages such as delamination or fiber protrusion. Those damages weaken the structure and thus can result into premature failure of CFRP parts. In this paper, a novel machining process for machining CFRP is proposed. The tool oscillates in a small angle at a high frequency. This cutting motion is superimposed by a feed motion in the tool's axial direction. The tools are hollow drills equipped with an abrasive body. In the experiments, different tool designs as well as different feed rates of this short amplitude torsion pendulum drilling are examined.
Heberger, L., Kirsch, B., Henn, B., & Aurich, J. C. (2017). Machining of CFRP via Short Amplitude Torsion Pendulum Drilling. In Procedia CIRP (Vol. 66, pp. 169–174). Elsevier B.V. https://doi.org/10.1016/j.procir.2017.03.222