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公开(公告)号：US09647518B2
公开(公告)日：2017-05-09
申请号：US14741924
申请日：2015-06-17
CPC分类号： H02K15/03 , B21D28/10 , B21D28/22 , B21D28/246 , B21D28/26 , B65H35/0006 , B65H35/008 , H02K15/02 , H02K15/024 , Y10T156/1002 , Y10T156/1056 , Y10T156/1075 , Y10T156/13 , Y10T156/1304
摘要： In a method for manufacturing a laminated iron core from a thin sheet, the method includes coining the thin sheet from below to form a thinned bridge portion on an outer peripheral portion of an iron core piece, blanking the iron core piece from the thin sheet from above or below after forming the bridge portion, and laminating the iron core piece on another iron core piece to manufacture the laminated iron core.
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公开(公告)号：US09641055B2
公开(公告)日：2017-05-02
申请号：US14742012
申请日：2015-06-17
CPC分类号： H02K15/03 , B21D28/10 , B21D28/22 , B21D28/246 , B21D28/26 , B65H35/0006 , B65H35/008 , H02K15/02 , H02K15/024 , Y10T156/1002 , Y10T156/1056 , Y10T156/1075 , Y10T156/13 , Y10T156/1304
摘要： In a method for manufacturing a laminated iron core from a thin sheet, the method includes coining the thin sheet from above to form a thinned bridge portion on an outer peripheral portion of an iron core piece, blanking the iron core piece downwardly from the thin sheet using a set of an outer-shape blanking punch and a die after forming the bridge portion, wherein the outer-shape blanking punch includes a projection portion fitted into the bridge portion when blanking, and laminating the iron core piece on another iron core piece to manufacture the laminated iron core.
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公开(公告)号：US11121610B2
公开(公告)日：2021-09-14
申请号：US16158633
申请日：2018-10-12
摘要： A method of manufacturing a laminated core includes supplying a stator material to a punching device and obtaining an electromagnetic steel plate corresponding to a rectangular processed body by punching the stator material. To obtain the electromagnetic steel plate ES, a slit is formed outside a processed body forming area in the stator material along a long side of the processed body forming area, and a center portion of the processed body forming area is punched out in a circular shape. Additionally, the processed body forming area is punched out after the slit is formed and the center portion is punched out. The laminated core is obtained by laminating and fastening a plurality of the electromagnetic steel plates.
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4.发明授权公开(公告)号：US10707015B2
公开(公告)日：2020-07-07
申请号：US15460589
申请日：2017-03-16
摘要： A method for manufacturing a laminated iron core includes setting a blanking position on a strip-shaped workpiece for iron core pieces each including a yoke piece part having a linear shape and a magnetic pole piece part extending from the yoke piece part, such that a pair of iron core pieces are opposed each other and the magnetic pole piece part of one iron core piece is arranged between adjacent magnetic pole piece parts of the other iron core piece among the pair of iron core pieces, simultaneously blanking a front end side of the magnetic pole piece part and a back surface side of the yoke piece part of the one iron core piece from the strip-shaped workpiece before simultaneously blanking those of the other iron core piece from the strip-shaped workpiece, and blanking the iron core pieces from the strip-shaped workpiece.
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公开(公告)号：US09757786B2
公开(公告)日：2017-09-12
申请号：US15003093
申请日：2016-01-21
摘要： A die apparatus includes a first die and a second die which are respectively used in adjacent working stations that sequentially blank or stamp out a progressively fed thin metal sheet. The first and second dies are held in a state where outer peripheral surfaces of the first and second dies directly contact each other.
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公开(公告)号：US10751782B2
公开(公告)日：2020-08-25
申请号：US16064701
申请日：2016-01-27
发明人： Akihiro Hashimoto , Tadashi Iida , Masahiro Izumi
摘要： At least one caulking group (13) that includes a plurality of caulking parts (14, 15) with different directions is formed on a plurality of thin plates (10) placed in a stacked state to fix the position of the stacked thin plates (10), and then a preset punching process is performed with respect to the thin plates (10) that have been positioned with pilot holes (12). This makes it possible to perform a high-accuracy punching process when punching the plurality of thin plates (10) placed in a stacked state, since positional deviations between the thin plates (10) are avoided and pilot pins (11) are prevented from deforming the periphery of the pilot holes (12).
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公开(公告)号：US10284058B2
公开(公告)日：2019-05-07
申请号：US14863736
申请日：2015-09-24
发明人： Akihiro Hashimoto
IPC分类号： H02K15/02
摘要： At the time of manufacturing both a laminated rotor core 13 and a laminated stator core 14 by punching out a plurality of iron core pieces 11 and 12 from a same strip material 10 and laminating the punched out iron core pieces 11 and 12, respectively, a plurality of kinds of laminated rotor cores 13 and 13a are manufactured by further punching out a plurality of iron core pieces 11a from the strip material 10 and laminating the punched out iron core pieces 11a. Here, the plurality of kinds of the laminated rotor cores 13 and 13a can be used for different electric motors.
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公开(公告)号：US20190009324A1
公开(公告)日：2019-01-10
申请号：US16064701
申请日：2016-01-27
发明人： Akihiro Hashimoto , Tadashi Iida , Masahiro Izumi
摘要： At least one caulking group (13) that includes a plurality of caulking parts (14, 15) with different directions is formed on a plurality of thin plates (10) placed in a stacked state to fix the position of the stacked thin plates (10), and then a preset punching process is performed with respect to the thin plates (10) that have been positioned with pilot holes (12). This makes it possible to perform a high-accuracy punching process when punching the plurality of thin plates (10) placed in a stacked state, since positional deviations between the thin plates (10) are avoided and pilot pins (11) are prevented from deforming the periphery of the pilot holes (12).
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公开(公告)号：US11469652B2
公开(公告)日：2022-10-11
申请号：US16519011
申请日：2019-07-23
发明人： Akihiro Hashimoto , Daisuke Komiya
摘要： A method of manufacturing a stacked core includes forming a first pilot hole in a metal plate, forming a worked portion of the metal plate in a state in which a first pilot pin is inserted into the first pilot hole, the worked portion being displaced relative to a plane of the metal plate, press-fitting the worked portion of the metal plate to reposition the worked portion to extend along the plane of the metal plate, forming a second pilot hole in the metal plate after press-fitting the worked portion of the metal plate, and forming a blanked member by blanking the metal plate in a state in which a second pilot pin is inserted into the second pilot hole, the blanked member including the worked portion.
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公开(公告)号：US09692281B2
公开(公告)日：2017-06-27
申请号：US14178767
申请日：2014-02-12
CPC分类号： H02K15/024 , H02K1/2773 , H02K15/03 , Y10T29/49012
摘要： There is provided a method for producing a rotor laminated core by laminating circular core pieces. The method determines a first blanking area, a second blanking area and a third blanking area in the magnetic steel board, wherein the first blanking area defines a shape of the core piece, the second blanking area defines a shape of a magnet-insertion hole, and the third blanking area defines a shape of an arbitrary part in the magnetic steel board. The method also forms a temporary aperture in the second blanking area, forms a thinning part which extends from the temporary aperture to the third blanking area, and blanks the first blanking area, the second blanking area and the third blanking area, thereby producing each circular core piece including the thinning part and magnet-insertion holes formed in a circumferential direction.
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