Abstract: A manufacturing method of a core of a rotating electrical machine includes: a preparation step of preparing a press device; a fixing step of fixing a steel sheet to a shaft member held by the press device by passing the shaft member through a hole provided in the steel sheet and extending in a stacking direction; and a processing step of performing press-working on the steel sheet by the press device in a state where the steel sheet is fixed to the shaft member.

Abstract: A method of manufacturing a rotational electric machine rotor includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face of the rotor core.

Abstract: A method of manufacturing a rotational electric machine rotor includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face of the rotor core.

Abstract: A method of manufacturing a rotational electric machine rotor includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face of the rotor core.

Abstract: A mandrel formed of urethane is inserted into a hollow shaft and is compressed axially by a die and a pad. The shaft is then fit in a shaft through hole of a rotor core. Thereafter, compression of the mandrel is released or reduced, and the mandrel is removed from the shaft. Thus, in fitting the hollow shaft in the shaft through hole of the rotor core, deformation of the shaft is reduced.

Abstract: Provided is a method for producing a fuel cell that can reduce the amount of an adhesive applied to join a pair of sheet-like separators together while also avoiding failures in the conveyance of the separators. A separator, which has a bent portion on the peripheral edge thereof and has a recess and a projection formed on one surface and the other surface, respectively, of the separator by the bent portion, is used. The conveying step includes gripping the bent portion at opposite ends of each separator using grippers. The seal portion forming step includes disposing an adhesive in the recess formed by the bent portion of one of the separators, and fitting the projection formed by the bent portion of the other separator in the recess.

Abstract: A shaft of a rotor includes a cylindrical core member and a resin member. An uneven portion made up of first hole portions is formed on an outer peripheral surface of the core member. The resin member covers the outer peripheral surface of the core member, while being adhesively fixed to the first hole portions. A rotor core is attached to a periphery of the resin member.

Abstract: A method of manufacturing a rotational electric machine rotor includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face of the rotor core.

Abstract: A method of manufacturing a rotational electric machine rotor includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face of the rotor core.

Abstract: A method of manufacturing a rotational electric machine rotor includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face of the rotor core.

Abstract: A rotor core includes a laminated iron core in which an electrical steel sheets are laminated, a magnet slot being provided in the laminated iron core and extending in a lamination direction of the laminated iron core, and a magnet that is fixed to an inside of the magnet slot through resin. The resin includes a filler, and the filler has a length in a longitudinal direction larger than a length in a width direction. The filler is oriented such that the longitudinal direction is directed towards a surface of the magnet.

Abstract: In a rotor of a rotating electric machine, a rotor core is fixed by plastically deforming a shaft having a simple structure. The rotor core is formed by laminating steel sheets provided with shaft holes. The shaft is formed of a hollow metal component and is inserted so as to penetrate through the shaft holes in the steel sheets. A wall surface of the shaft is partially cut in the circumferential direction, and of two wall surface regions aligned in the axial direction with a cut portion in between, the wall surface region positioned on the side farther from the rotor core is plastically deformed in the radial direction. In this way, protruding portions that open the cut portions are formed. End surfaces of the rotor core are pressure bonded and fixed by the cut portions of these protruding portions.

Abstract: A method for producing a fuel cell separator capable of ensuring the working accuracy for a separator material. A surface of a mold is provided with grooves, each groove having a depth and width each equivalent to or larger than the thickness of a coating layer and equivalent to or smaller than the thickness of the separator material, the mold including an upper die having a projection/recess pressing surface on which projecting and recessed surfaces extending in a predetermined direction are alternately provided, and a lower die having a projection/recess pressing surface in a shape complementary to that of the pressing surface of the upper die.

Abstract: A shaft of a rotor includes a cylindrical core member and a resin member. An uneven portion made up of first hole portions is formed on an outer peripheral surface of the core member. The resin member covers the outer peripheral surface of the core member, while being adhesively fixed to the first hole portions. A rotor core is attached to a periphery of the resin member.

Abstract: A rotor core includes a laminated iron core in which an electrical steel sheets are laminated, a magnet slot being provided in the laminated iron core and extending in a lamination direction of the laminated iron core, and a magnet that is fixed to an inside of the magnet slot through resin. The resin includes a filler, and the filler has a length in a longitudinal direction larger than a length in a width direction. The filler is oriented such that the longitudinal direction is directed towards a surface of the magnet.

Abstract: Provided is a method for producing a fuel cell that can reduce the amount of an adhesive applied to join a pair of sheet-like separators together while also avoiding failures in the conveyance of the separators. A separator, which has a bent portion on the peripheral edge thereof and has a recess and a projection formed on one surface and the other surface, respectively, of the separator by the bent portion, is used. The conveying step includes gripping the bent portion at opposite ends of each separator using grippers. The seal portion forming step includes disposing an adhesive in the recess formed by the bent portion of one of the separators, and fitting the projection formed by the bent portion of the other separator in the recess.

Abstract: A mandrel formed of urethane is inserted into a hollow shaft and is compressed axially by a die and a pad. The shaft is then fit in a shaft through hole of a rotor core. Thereafter, compression of the mandrel is released or reduced, and the mandrel is removed from the shaft. Thus, in fitting the hollow shaft in the shaft through hole of the rotor core, deformation of the shaft is reduced.

Abstract: A method of manufacturing a rotational electric machine rotor includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face of the rotor core.

Abstract: A manufacturing method of a core of a rotating electrical machine includes: a preparation step of preparing a press device; a fixing step of fixing a steel sheet to a shaft member held by the press device by passing the shaft member through a hole provided in the steel sheet and extending in a stacking direction; and a processing step of performing press-working on the steel sheet by the press device in a state where the steel sheet is fixed to the shaft member.

Abstract: In a rotor of a rotating electric machine, a rotor core is fixed by plastically deforming a shaft having a simple structure. The rotor core is formed by laminating steel sheets provided with shaft holes. The shaft is formed of a hollow metal component and is inserted so as to penetrate through the shaft holes in the steel sheets. A wall surface of the shaft is partially cut in the circumferential direction, and of two wall surface regions aligned in the axial direction with a cut portion in between, the wall surface region positioned on the side farther from the rotor core is plastically deformed in the radial direction. In this way, protruding portions that open the cut portions are formed. End surfaces of the rotor core are pressure bonded and fixed by the cut portions of these protruding portions.