G040082 CFRPの放電切削加工法の開発([G04008]機械材料・材料加工部門一般セッション(8))

概要

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Recently, carbon fiber reinforced plastic(CFRP)laminate is used for structural parts of airplane, car, and so on,because it has high specific intensity, high specific stiffness and high chemical resistant. However CFRP is difficult tobe drilled clear holes. Moreover, cutting tool is easily worn out with each drilling. The more cutting tool is worn, themore delamination of CFRP is easy to occur. This paper describes the attempt of electric discharge assisted drilling ofCFRP to improve the quality of drilling holes. Cutting experiments were performed using tungsten carbide drills 6.Omm in diameter with electric discharge. Electric discharge enhanced drilling may have effect to reduce delaminationbecause electric discharge damages the carbon fiber and decreases the thrust force of drilling to cut the carbon fiber. It isrequired to optimize the electric discharge power in future work. Because in the high power case, epoxy resin is burnedand in the low power case, carbon fiber is not damaged.
一般社団法人日本機械学会の論文
2011-09-11