抄録
In this paper describes the optimal shape of cutting edge on the ball-nose end mill for cutting technique of CFRP composite plates without burrs and delaminations. The shape of a ball-nose end mill is evaluated as one of the useful cutting tools for CFRP drilling by our experiments. The connection point which is between outer peripheral side flute edges and bottom blade on the ball-nose end mill is remarkably affected to finished surface and accuracy of diameter on the drilled holes. The cutting edge around connection point of tip and side cutting edge lift the top layer of CFRP as burrs and delaminations.
