繊維強化複合材料の切削加工に関する研究(第2報) : FRP の切削仕上面創成機構

概要

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For getting good surface finish in the cutting of FRP, fiber must be fractured with little deflection at the point of contact with cutting edge. In practice, however, the point of fracture varies with the mechanical properties of FRP, fiber angle and cutting conditions. In this paper, the relationship between surface finish and the behavior of fiber during cutting is investigated in orthogonal cutting test of FRP having uniaxial laminate. Three modes of fiber fracture found in the test are analysed theoretically. Then it is concluded that the position of fiber fracture, which determines the surface finish, is mainly dominated by the rake angle of cutting tool and the fracture strain of fiber as well as E modulus of FRP. When the fiber angle is larger than 90 deg, appreciable elastic recovery of machined surface after cutting causes the tool flank rubbing. The amount of the recovery depends upon fiber angle and cutting edge sharpness.
公益社団法人精密工学会の論文
1991-08-05