The CFRP composite has a lot of merits such as mechanical characteristic, light and thermal resistance. For these merits, CFRP is applied to so many industrial area. In order to use the composite materials in the aircraft structures or machine elements, accurate surfaces for bearing mounting or joints must be provided, which require precise ,machining. In this study, the specimens differentiating the stacking sequence of 5kinds were used. When drilling the carbon fiber reinforced plastics, it was checked on whether the stacking sequence reached any effect on the cutting force. Also relationship between the drill diameter is examined from the drilling experiment, which is the drilling of Fabric, Unidirectional specimen with ∅6mm, ∅10mm, ∅12mm cemented carbide drill. Considering cutting force and drilling diameter, the results are analyzed.

Abstract
 1. 서론
 2. 실험장치 및 실험방법
  2.1 시험편 제작 및 공구
  2.2 실험장치 및 실험방법
 3. 결과 및 고찰
 4. 결론
 참고문헌

• 김선범(전북대 공과대학 일반대학원) | S.B.Kim
• 신형곤(전북대 기계시스템 공학부) | H.G.Shin
• 김태영(전북대 기계시스템 공학부) | T.Y.Kim