Abstract: A core metal includes, on an outer circumference thereof, a plurality of attachment surfaces to which a plurality of strings are attached, and a plurality of guided portions are formed along an axial direction of the core metal and disposed between two of the attachment surfaces. A string supply device includes a string supply unit that supplies the strings to the outer circumference of the core metal, an attaching unit that arranges and attaches the strings on the attachment surfaces of the core metal in a circumferential direction of the core metal, and a plurality of guiding units, in contact with the guided portions of the core metal, which guides the core metal.

Abstract: A core metal includes, on an outer circumference thereof, a plurality of attachment surfaces to which a plurality of strings are attached, and a plurality of guided portions are formed along an axial direction of the core metal and disposed between two of the attachment surfaces. A string supply device includes a string supply unit that supplies the strings to the outer circumference of the core metal, an attaching unit that arranges and attaches the strings on the attachment surfaces of the core metal in a circumferential direction of the core metal, and a plurality of guiding units, in contact with the guided portions of the core metal, which guides the core metal.

Abstract: A shaft-like composite member made by laminating the 0 degree layer which is a base layer wherein an alignment direction of a carbon fiber (long fiber) is parallel to an axis of the shaft-like composite member; the +/?45 degrees layer which is placed on the inner diameter side of the 0 degree layer wherein an alignment direction of a carbon fiber (long fiber) is oblique to the axis of the shaft-like composite member; an inner glass fiber reinforced plastic layer which is interposed between the 0 degree layer on the outer diameter side and the +/?45 degrees layer on the inner diameter side so as to serve as a stress relaxation layer; and the outer glass fiber reinforced plastic layer which is placed on the outer diameter side of the 0 degree layer is provided.

Abstract: To provide a method of manufacturing a shaft-shape composite member in which a bent section is suitably treated. A plurality of thermosetting fiber-reinforced resin materials made of a UD material is supplied to a bending section of a mold in a state of being aligned in parallel to an axial direction of a cavity to form a UD material layer. Subsequently, after forming a tubular member having the UD material layer by the metal mold, by thermally curing the tubular member, the shaft-shape composite member having the bent section can be obtained. When manufacturing the shaft-shape composite member, a cross-section orthogonal to the axial direction of each of the fiber-reinforced resin materials has a circular shape.

Abstract: A bent part of a shaft-shaped composite member is formed by stacking a 0° layer located on a radial outer side and having a carbon fiber orientation direction parallel to an axial direction of the shaft-shaped composite member and a ±45° layer located on a radial inner side and having a carbon fiber orientation direction obliquely intersecting the axial direction of the shaft-shaped composite member. A stress relaxation layer is interposed between the 0° layer and the ±45° layer. The stress relaxation layer is set to have a flexural rigidity lower than a flexural rigidity of the 0° layer and a torsional rigidity lower than a torsional rigidity of the ±45° layer.