Rotor manufacturing method

A rotor manufacturing method for manufacturing a rotor including a rotating support ring having an annular shape around a rotation axis, magnetic bodies provided alongside the rotating support ring in a radial direction, and a composite material that integrally restrains the rotating support ring and the magnetic bodies, the method comprising:

• a first step of disposing the rotating support ring and the magnetic bodies to be arranged in the radial direction;
• a second step of spirally winding the composite material around the rotating support ring and the magnetic bodies arranged in the radial direction as a core, the composite material being not cured and containing reinforcement fibers infiltrated with a resin that is not cured, in which a fiber direction of the reinforcement fibers is a longitudinal direction;
• and
• a third step of curing the resin contained in the composite material,
• wherein in the second step, the composite material is wound around the rotating support ring and the magnetic bodies while causing turns of the composite material to overlap each other in a circumferential direction of the rotating support ring.

A rotor manufacturing method for manufacturing a rotor including a rotating support ring having an annular shape around a rotation axis, magnetic bodies provided alongside the rotating support ring in a radial direction, and a composite material that integrally restrains the rotating support ring and the magnetic bodies, the method comprising:

• a first step of disposing the rotating support ring and the magnetic bodies to be arranged in the radial direction;
• a second step of spirally winding the composite material around the rotating support ring and the magnetic bodies arranged in the radial direction as a core, the composite material being not cured and containing reinforcement fibers infiltrated with a resin that is not cured, in which a fiber direction of the reinforcement fibers is a longitudinal direction;
• and
• a third step of curing the resin contained in the composite material,
• wherein in the second step, the composite material is wound around the rotating support ring and the magnetic bodies to form at least two layers, and the composite material forming one layer is wound in a forward rotation direction whereas the composite material forming the other layer is wound in a reverse rotation direction.