A newly developed woven metal wire tool with electrodeposited diamond grains and its application for CFRP core drilling

Abstract

Drilling into carbon fiber reinforced plastic (CFRP) with conventional tools often results in defects like delamination, fiber pull-out, etc. In order to achieve high-quality machining of CFRP, this study newly developed a woven metal wire tool with electrodeposited diamond grains. A hole of 20 mm in diameter was drilled using the developed tool with hyper grinding, which supplies a coolant through the grinding wheel at the grinding point. As a result, this method made a good hole without delamination at the entry and exit of the hole. In addition, an excellent surface roughness of 0.64 μm Ra was achieved.