Mitsui High-tec Incorporated

Other

Toyota Jidosha Kabushiki Kaisha

Mistui High-tec, Inc.

Go Kato

Akira Nagai

Takashi Fukumoto

Kenji Katsuki

Yasutaka Oba

Kohei Yoshida

Masashi Matsumoto

Shoichi Ono

Kazuki Namaike

Kei Sameshima

Syoichi Ono

Shinya Sano

Tatsuhiko Mizutani

Satoshi Matsubayashi

Jin Oda

Yoshitada Yamagishi

Hirokazu Arakawa

Mei Ogata

Mei Arazoe

Syo Yamaguchi

Yuzo Ohta

A method for manufacturing a rotor core includes detecting a height of a projecting portion formed on a lower die by a height detecting unit, and placing onto the lower die a core body in which a magnet insertion hole is formed such that the projecting portion is positioned in the magnet insertion hole when the height detecting unit has determined that the height of the projecting portion is within a set range. Additionally, the method includes bringing a permanent magnet in the magnet insertion hole into contact with an upper end of the projecting portion, and placing onto the core body a holding member after bringing the permanent magnet into contact with the upper end of the projecting portion. Melted resin is injected into the magnet insertion hole in which the permanent magnet has been inserted after placing the holding member onto the core body.

Method for manufacturing rotor core

A method of manufacturing a rotating body includes disposing an end plate on an end surface of the core body in a height direction, and forming the rotating body by welding the end plate and the core body together. The rotating body is formed by welding the end plate and the core body together while a temperature of the core body and the end plate is within a predetermined operational a temperature range associated with rotation of the rotating body in a manufactured state of operation.

Method of manufacturing rotating body

A method of manufacturing a core product includes injecting molten resin into a resin injection portion provided in a core body so as to extend in a longitudinal direction of the core body, and forming a core product by welding the core body. A buffer region is set between the resin injection portion and a periphery of the core body in a lateral direction of the core body. The core product is formed by welding the core body so that a weld bead formed on the core body is prohibited from reaching the buffer region, and so that the weld bead is spaced apart from the resin injection portion in the lateral direction of the core body.

Method of manufacturing core product, and core product

There is provided a method for measuring a laminated iron core. The method includes preparing a laminated iron core in which two or more kinds of metal plates with different shapes are laminated and a deformed part is formed inside a hole continuing in a lamination direction of the laminated iron core, acquiring a surface profile data indicating a surface shape of the deformed part through an inlet of the hole by a non-contact sensor located in an outside of the hole, and calculating a length from the inlet of the hole to the deformed part in the lamination direction by a calculator based on the surface profile data.

Method for measuring laminated iron core

A method of manufacturing a rotor core having a plurality of core members stacked together includes determining weight imbalances for the plurality of core members with respect to a central axis of the rotor core; combining the weight imbalances of the plurality of core members to determine a weight distribution of the rotor core; and displacing the weight imbalances of one or more of the plurality of core members to adjust a position of the weight distribution of the rotor core with respect to the central axis.

Method of manufacturing laminated rotor core

A laminated core includes: a laminate in which 1to N(N is a natural number of two or more) core members are laminated in this order; and a distinguishing mark formed with a marking that is placed on a peripheral surface of the laminate so as to be continuously positioned over all of the 1to Ncore members.

Laminated core and method for manufacturing the same

In the case of a laminated rotor core, insertion of permanent magnetsand filling of resininto each of magnet insertion holesare performed in order to cancel out a problem of an imbalanced weight estimated from a deviation of lamination thickness in a circumferential direction of a laminated core body, and a manufacturing method includes a step of measuring a deviation of lamination thickness in which an imbalanced weight is estimated by measuring the deviation of lamination thickness in the circumferential direction of the laminated core body, and a step of balance adjustment in which the insertion of the permanent magnetsinto each of the magnet insertion holesand the filling of resininto each of the magnet insertion holesare performed in a manner that cancels out a problem of this imbalanced weight.

Laminated rotor and method for balancing the same

A method of manufacturing a laminated stator core includes: blanking an electrical steel sheet at 1st to Nth (N is a natural number equal to or greater than 2) positions arranged in the width direction of the electrical steel sheet to form 1st to Nth blank members, and laminating the 1st to Nth blank members to form a laminated stator core. The shape or arrangement of at least one odd-shaped part of a plurality of odd-shaped parts in the kth (k is a natural number of 1 to N) blank member differs from the shape or arrangement of at least one odd-shaped part of a plurality of odd-shaped parts in the mth (m is a natural number of 1 to N and satisfying m&#x2260;k) blank member such that the shapes of given two blank members do not agree with each other.

Method of manufacturing laminated core

There is provided a method for measuring a laminated iron core. The method includes preparing a laminated iron core in which two or more kinds of metal plates with different shapes are laminated and a deformed part is formed inside a hole continuing in a lamination direction of the laminated iron core, acquiring a surface profile data indicating a surface shape of the deformed part through an inlet of the hole by a non-contact sensor located in an outside of the hole, and calculating a size of the deformed part by a calculator based on the surface profile data.

In a method of manufacturing a laminated core, a laminated core bodyincluding magnet insertion holesandwith magnet piecesinserted therein is placed between a molding (upper) dieand a retaining (lower) dieand a molding resinis filled from resin reservoir portions (pots)to fix the piecesin the holesandBetween the dieand the bodya guide memberis placed, which includes resin passagesprovided from the portionsto the holesandand gatesconnecting to the holesandon downstream sides of the passagesThe method can reduce lead time of a production line without replacing the molding dies for different laminated rotor cores and thus without preparing different types of molding dies.

In a method of manufacturing a laminated core, a laminated core bodyincluding magnet insertion holesandwith magnet piecesinserted therein is placed between a molding (upper) dieand a retaining (lower) die, and a molding resinis filled from resin reservoir portions (pots)to fix the piecesin the holesand. Between the dieand the body, a guide memberis placed, which includes resin passagesprovided from the portionsto the holesandand gatesconnecting to the holesandon downstream sides of the passages. The method can reduce lead time of a production line without replacing the molding dies for different laminated rotor cores and thus without preparing different types of molding dies.

There is provided a method of manufacturing a laminated rotor core, including: a mounting step of placing a core body on a carrier tray, the core body having a plurality of magnet insertion holes provided around the shaft hole, the carrier tray having a mount plate and a columnar guide member standing on a front surface of the mount plate, the placement of the core body being carried out by fitting the guide member into the shaft hole; an inserting step of inserting permanent magnets respectively in the magnet insertion holes; an injecting step of injecting a liquefied resin material in each of the magnet insertion holes; and a first preheating step of heating the core body before the mounting step, wherein the inserting step and the injecting step are carried out in a state in which the core body is placed on the carrier tray.

A method of resin sealing a permanent magnet in a magnet insertion portion of a laminated body, the body formed by laminating plural core sheets and including the plural portions formed around a shaft hole in a center of the plural portions, the portion connected to an internal space via an opening. The method includes a first process of positioning a blocking member blocking the opening from a side of the space in a way that the member is vertically-placed in a lower die or an upper die, while the both dies hold the body from both sides in an axial direction and close the portion; and a second process of filling a resin extruded from a resin reservoir portion provided in the die or the die into the portion having the magnet inserted and having the opening closed by the member.

Method of resin sealing permanent magnet and laminated core manufactured thereof

A method of manufacturing a laminated core, having a laminated core bodyformed by laminating plural core sheetsand having magnet insertion holeswith openingsopening to a inner spaceor an external side, inserting and resin-sealing permanent magnetsin the magnet insertion holes, with the openingsblocked by a blocking member, the method including: temporarily connecting blocking member piecesto be the blocking memberin each of the core sheetsand removing the blocking memberwith the laminated core bodyresin-sealed. By this, without a special blocking member, the permanent magnetsare resin-sealed while the magnet insertion holes, parts of which have the openings, are blocked.

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Kitakyushu, Japan

Go Kato