Abstract: The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).

Abstract: In a method of manufacturing a rotor of an electric motor to be arranged inside a stator, a permanent magnet is formed in a ring-shape, and a rotating shaft and the permanent magnet are concentrically arranged in a mold. Then, a rubber material in a fluid state is poured into a space between the permanent magnet and the rotating shaft to vulcanize and mold a cushioning member having predetermined hardness. The permanent magnet and the rotating shaft are integrally coupled through the cushioning member.

Abstract: In a method of manufacturing a rotor of an electric motor to be arranged inside a stator, a permanent magnet is formed in a ring-shape, and a rotating shaft and the permanent magnet are concentrically arranged in a mold. Then, a rubber material in a fluid state is poured into a space between the permanent magnet and the rotating shaft to vulcanize and mold a cushioning member having predetermined hardness. The permanent magnet and the rotating shaft are integrally coupled through the cushioning member.

Abstract: Between a permanent magnet formed in a ring shape and a rotating shaft arranged at the center of the permanent magnet, a cushioning member made of rubber material is vulcanized and molded, and the permanent magnet and the rotating shaft are integrally coupled through the cushioning member, whereby vibration isolation, eccentricity and the like of a rotor are realized with a small number of components to manufacture an electric motor at low cost.