一方向FRP材を切削加工した場合の工具摩耗への母材特性の変化の影響

抄録

This paper describes tool wear in cutting of unidirectional glass fiber reinforced plastic materials with high-speed steel bits. It was clarified that the changes in both the characteristic of matrix and the direction of fiber influenced the tool wear. It was found that the roughness of the cut surface of specimen was strongly affected by as well. The following results were obtained:
(1) The wear width of flank face was made longer with an increase in Young's modulus of matrix.
(2) The hard matrix produced unusual wear of rake face like a step at both directions of fiber, π/2 and 2π/3.
(3) The lower Young's modulus of matrix resulted in the larger roughness of surface.
(4) The wear width of flank face was strongly affected by the direction of fiber, while that of rake face was not so much.