WO2011070883A1 - 回転子の製造方法及び製造装置 - Google Patents
回転子の製造方法及び製造装置 Download PDFInfo
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- WO2011070883A1 WO2011070883A1 PCT/JP2010/069961 JP2010069961W WO2011070883A1 WO 2011070883 A1 WO2011070883 A1 WO 2011070883A1 JP 2010069961 W JP2010069961 W JP 2010069961W WO 2011070883 A1 WO2011070883 A1 WO 2011070883A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
- Y10T29/49012—Rotor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53143—Motor or generator
Definitions
- the present invention relates to a method and apparatus for manufacturing a rotor in which permanent magnet pieces are respectively inserted into a plurality of magnet insertion holes formed in a rotor laminated core (rotor core) and fixed with a thermosetting resin (for example, epoxy resin). About.
- Patent Document 1 discloses a technique (magnet molding method) in which a permanent magnet piece is inserted into a magnet insertion hole provided in a rotor laminated core and the permanent magnet piece is fixed with resin.
- this magnet molding method at the time of resin molding, the rotor laminated iron core is sandwiched between the upper mold and the lower mold, and the resin is filled into the magnet insertion hole into which the permanent magnet piece is inserted from the surface of the rotor laminated iron core.
- the surface of the rotor laminated core is deformed by 1) the press pressure when forming the caulking protrusions, 2) the pressure when the rotor laminated core is clamped with the lower and upper molds, and 3) the pressure when filling the resin.
- there is a problem is generated between the rotor laminated iron core and the upper and lower molds, and the resin leaks from the gap.
- the caulk connection part 51 has a bulge (or a depression) 52 above the caulking connection part 51.
- the surface of the mold 53 cannot be adhered.
- a slight gap is generated between the surface of the rotor laminated core 54 and the upper mold 53, and there is a risk of causing resin leakage during resin sealing.
- symbols 55 and 56 in a figure show the runner (resin flow path) currently formed in the back surface of the upper mold
- the present invention has been made in view of such circumstances, and the surface of the rotor laminated core is slightly affected by caulking connection portions (that is, caulking protrusions and bulges or depressions formed around the caulking projections) formed on the rotor laminated core.
- An object of the present invention is to provide a method and an apparatus for manufacturing a rotor that does not cause resin leakage even when there is unevenness.
- a plurality of iron core pieces are caulked and laminated via caulking connection portions to form a rotor laminated iron core having a magnet insertion hole, Inserting a permanent magnet piece into the magnet insertion hole; Sandwiching the rotor laminated core between the upper mold and the lower mold,
- a rotor manufacturing method for manufacturing a rotor by filling the magnet insertion hole with resin from a resin reservoir pot formed in the upper mold or the lower mold, There is provided a method of manufacturing a rotor, wherein the caulking connection portion is arranged at the center of the resin reservoir pot to perform resin sealing on the magnet insertion hole.
- the center of the caulking connection portion may coincide with the center of the resin reservoir pot.
- the resin reservoir pot and the magnet insertion hole may be connected via a runner. Moreover, you may fill resin into a part of magnet insertion hole directly from a resin reservoir pot.
- a plurality of pairs of magnet insertion holes in which the magnet insertion holes are paired are provided, Each of the magnet insertion hole pairs is formed such that the interval between the radially inner ends is wider than the interval between the radially outer ends when viewed from the axial direction of the rotor laminated core,
- the caulking connection portion may be provided on the radially inner side of the center of the magnet insertion hole pair.
- the diameter of the resin reservoir pot may be in the range of 3 to 10 times the maximum width of the caulking connection portion.
- a recess due to the caulking connection portion may be formed on a surface of the rotor laminated core in contact with the upper die or the lower die on which the resin reservoir pot is formed. Good.
- a plurality of iron core pieces are caulked and laminated via caulking connections, and a rotor laminated iron core with permanent magnet pieces inserted into each magnet insertion hole is sandwiched between the upper die and the lower die, and the upper die or the lower die is attached.
- a rotor manufacturing apparatus for filling the magnet insertion hole with resin from the formed resin reservoir pot, A rotor manufacturing apparatus is provided in which the center of the caulking connection portion is aligned with the center of the resin reservoir pot to perform resin sealing on the magnet insertion hole.
- the resin reservoir pot may be provided in the upper mold.
- resin for example, thermosetting resin
- the bulge or recess around the dowel can be positioned in the area of the resin reservoir pot by arranging the caulking connection portion at the center of the resin reservoir pot. . Since the upper mold or the lower mold in which the resin reservoir pot is formed can press a region having a high degree of parallelism on the surface of the rotor laminated core (that is, a region close to a flat surface with no difference in level), The gap generated between the upper mold or the lower mold in which the resin reservoir pot is formed is eliminated, and resin leakage can be prevented. Further, by arranging the resin reservoir pot so that the center of the caulking connection portion and the center of the resin reservoir pot coincide with each other, the bulge or the depression around the caulking connection portion can be positioned more securely in the resin reservoir pot. .
- the center of the caulking connection area and the center of the resin accumulation pot are the same. Since the upper mold or the lower mold in which the resin reservoir pot is formed can press a region having a high degree of parallelism on the surface of the rotor laminated iron core, it is possible to prevent resin leakage. Become.
- FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. It is a partial longitudinal cross-sectional view of the manufacturing apparatus of the rotor which concerns on other embodiment of this invention. It is a fragmentary top view which shows the manufacturing method of the rotor which concerns on a prior art example.
- FIG. 6 is a cross-sectional view taken along the line BB in FIG. 5.
- a rotor manufacturing apparatus 10 has a plurality of magnet insertion holes 12 provided around a central shaft hole of a rotor laminated core 11.
- the inserted non-excited permanent magnet piece 13 can be sealed with resin.
- the rotor laminated core 11 is arranged so that the protrusions of the caulking connection portions (caulking protrusions) 15 that connect the upper and lower iron core pieces 14 face the upper mold 17.
- the rotor laminated iron core 11 is a cylindrical member in which a plurality of iron core pieces 14 are caulked and laminated via caulking connection portions 15.
- the caulking connection portion 15 includes a protrusion protruding in one axial direction (upward in the present embodiment) of the rotor laminated core 11 and a recess formed on the back surface of the protrusion.
- the plurality of iron core pieces 14 are in a state in which the protrusions of the caulking connection portions 15 provided on one iron core piece 14 match the concave portions of the caulking connection portions 15 of the iron core pieces 14 stacked on the iron core pieces 14.
- the core pieces 14 are connected to each other by pressing up and down (in the axial direction of the rotor laminated core 11) and caulking the protrusions and recesses of the caulking connection portion 15.
- the rotor laminated iron core 11 is formed in the upper die 17 with the upper die 17 and the lower die 18 being sandwiched.
- An epoxy resin 21, which is an example of a sealing resin, is filled into the magnet insertion hole 12 from the resin reservoir pot (cal) 19 that is formed on the upper mold 17 through the runners 20 and 20 a, and the magnet insertion hole 12 is sealed. Is done.
- the center of the resin reservoir pot 19 having a circular cross section formed in the upper die 17 is formed on the radially inner side of the center of each magnet insertion hole pair 22 of the rotor laminated core 11, and the caulking connection portion 15.
- the magnet insertion hole pair 22 has two magnet insertion holes 12 in a "C" shape (inverted V shape with English bottom cut out, Chinese The distance between the radially inner ends is wider than the distance between the radially outer ends.
- the caulking connection portion 15 is a bulge formed by V-shaped caulking when viewed from the axial direction and when viewed from the axial cross-section, or by circular half punching when viewed from the axial direction. Sometimes).
- the diameter of the resin reservoir pot 19 is 3 to 10 times (more preferably 4 to 8 times) the maximum width of the caulking connection portion 15. As shown in FIG. 3, in the process of forming the caulking connection portion 15 on the hollow disk-shaped iron core piece 14, the surface of the rotor laminated iron core 11 around the caulking connection portion 15 is deformed so as to swell upward. Further, since the swelling around the caulking connection portion 15 is swelled symmetrically in the resin reservoir pot 19 with respect to the center of the resin reservoir pot 19, the swelling around the caulking connection portion 15 is the resin reservoir pot. It can be located in the area of the pot 19, and there is no gap for the resin to leak between the periphery of the resin reservoir pot 19 and the surface of the rotor laminated core 11.
- the manufacturing method of the rotor which concerns on one embodiment of this invention is demonstrated.
- the permanent magnet piece 13 is inserted into each magnet insertion hole 12 of the rotor laminated core 11, and the upper die 17 and the lower die 17 are
- the rotor laminated iron core 11 is disposed between the molds 18 so that the center of the resin reservoir pot 19 provided in the upper mold 17 and the center position of the caulking connection portion 15 formed on the rotor laminated iron core 11 coincide with each other.
- the laminated iron core 11 is positioned.
- the rotor laminated core 11 is disposed between the upper die 17 and the lower die 18 so that the protrusions of the caulking connection portions 15 of the iron core pieces 14 face upward. It is also possible to place the iron core 11 between the upper mold 17 and the lower mold 18 with the iron core 11 placed on a transport tray (for example, described in Japanese Patent No. 3786946).
- the transport tray has positioning means for the rotor laminated core 11.
- the epoxy resin 21 is poured into the resin reservoir pot 19 of the upper mold 17 to be melted, and the melted epoxy resin 21 is pushed by the plunger 23 from above to runner 20. , 20a through the magnet insertion hole 12.
- the resin reservoir pot 19 covers the bulge caused by the caulking connection portion 15.
- the gap between the surfaces of the upper mold 17 and the rotor laminated core 11 is eliminated, and the occurrence of resin leakage is eliminated.
- FIG. 4 shows a rotor manufacturing apparatus 26 according to another embodiment of the present invention. Note that the same constituent elements as those in FIG. In this embodiment, the rotor laminated core 27 is arranged so that the projections of the caulking connection portions 28 of the core pieces 14 face the lower mold, and around the caulking connection portion 28 on the upper surface of the rotor laminated core 27. Is formed with a depression (may be bulged in some cases).
- the caulking connection portion 28 is disposed at the center of the resin reservoir pot 19, when the rotor laminated core 27 is clamped with the upper mold 17, the periphery of the resin reservoir pot 19 is flat. Thus, no resin leakage occurs when the resin is sealed after clamping.
- the resin reservoir pot 19 is arranged on the surface (upper surface in this figure) of the rotor laminated iron core 27 on the side where the depression by the caulking connection portion 28 is formed. The surfaces of the child laminated iron cores 27 are easily adhered to each other, and a gap that causes resin leakage is unlikely to occur.
- the swollenness due to the caulking connection portion 15 has high rigidity, but is less likely to be in close contact with the upper mold 17. Therefore, if the resin reservoir pot 19 is enlarged and the bulge generated around the caulking connection portion 15 is not positioned almost completely within the region of the resin accumulating pot 19, resin leakage is likely to occur. It is preferable that the recess generated by the formation of the caulking connection portion 15 is located in the resin reservoir pot 19 with the projecting direction of the resin facing the direction opposite to the resin sealing side.
- the present invention is not limited to the above-described embodiment.
- the resin storage pot can be directly used without providing a runner.
- the present invention is applicable even when the magnet insertion hole is filled with resin.
- the resin reservoir pot (cal) is provided in the upper mold, but the present invention is also applied to the case where the resin reservoir pot is provided in the lower mold and the resin is filled from the lower side of the magnet insertion hole.
- the bulge or depression around the dowel can be positioned in the area of the resin reservoir pot by arranging the caulking connection portion at the center of the resin reservoir pot. it can. Since the upper mold or the lower mold in which the resin reservoir pot is formed can press a region having a high degree of parallelism on the surface of the rotor laminated core (that is, a region close to a flat surface with no difference in level), The gap generated between the upper mold or the lower mold in which the resin reservoir pot is formed is eliminated, and resin leakage can be prevented. Further, by arranging the resin reservoir pot so that the center of the caulking connection portion and the center of the resin reservoir pot coincide with each other, the bulge or the depression around the caulking connection portion can be positioned more securely in the resin reservoir pot. .
Abstract
Description
複数の鉄心片をかしめ接続部を介してかしめ積層して磁石挿入孔を有する回転子積層鉄心を形成し、
前記磁石挿入孔に永久磁石片を挿入し、
前記回転子積層鉄心を上型と下型の間に挟み、
前記上型又は前記下型に形成された樹脂溜めポットから前記磁石挿入孔に樹脂を充填して回転子を製造する回転子の製造方法において、
前記かしめ接続部を前記樹脂溜めポットの中心に配置して前記磁石挿入孔への樹脂封止を行うことを特徴とする回転子の製造方法が提供される。
前記磁石挿入孔が対となった磁石挿入孔対が複数組設けられ、
前記各磁石挿入孔対は、前記回転子積層鉄心の軸方向から見て、互いの径方向内側端部同士の間隔が互いの径方向外側端部同士の間隔よりも広くなるように形成され、
該磁石挿入孔対の中央の半径方向内側に前記かしめ接続部が設けられていてもよい。
複数の鉄心片がかしめ接続部を介してかしめ積層され、各磁石挿入孔に永久磁石片が挿入された回転子積層鉄心を上型及び下型の間に挟み、前記上型又は前記下型に形成された樹脂溜めポットから前記磁石挿入孔に樹脂を充填する回転子の製造装置において、
前記かしめ接続部の中心を前記樹脂溜めポットの中心に一致させて、前記磁石挿入孔への樹脂封止を行うことを特徴とする回転子の製造装置が提供される。
更に、かしめ接続部の中心と樹脂溜めポットの中心とを一致させるように樹脂溜めポットを配置することで、より確実にかしめ接続部周囲の膨らみ又は窪みを樹脂溜めポット内に位置させることができる。
この回転子の製造装置10を用いて回転子積層鉄心11の樹脂封止を行う場合には、回転子積層鉄心11の各磁石挿入孔12に永久磁石片13を挿入し、上型17と下型18の間に回転子積層鉄心11を配置し、上型17に設けた樹脂溜めポット19の中心と回転子積層鉄心11に形成されたかしめ接続部15の中心位置が一致するように回転子積層鉄心11を位置決めする。
図4に示すように、かしめ接続部28による窪みが形成された側の回転子積層鉄心27の面(この図では上面)に樹脂溜めポット19を配置することで、上型17の底面と回転子積層鉄心27の表面が互いに密着し易く、樹脂漏れを起こす隙間が発生し難い。
また、前記実施の形態においては、上型に樹脂溜めポット(カル)を設けたが、下型に樹脂溜めポットを設け、磁石挿入孔の下側から樹脂を充填する場合も本発明は適用される。
本出願は、2009年12月9日出願の日本特許出願(特願2009-279690)に基づくものであり、その内容はここに参照として取り込まれる。
更に、かしめ接続部の中心と樹脂溜めポットの中心とを一致させるように樹脂溜めポットを配置することで、より確実にかしめ接続部周囲の膨らみ又は窪みを樹脂溜めポット内に位置させることができる。
Claims (8)
- 複数の鉄心片をかしめ接続部を介してかしめ積層して磁石挿入孔を有する回転子積層鉄心を形成し、
前記磁石挿入孔に永久磁石片を挿入し、
前記回転子積層鉄心を上型と下型の間に挟み、
前記上型又は前記下型に形成された樹脂溜めポットから前記磁石挿入孔に樹脂を充填して回転子を製造する回転子の製造方法において、
前記かしめ接続部を前記樹脂溜めポットの中心に配置して前記磁石挿入孔への樹脂封止を行うことを特徴とする回転子の製造方法。 - 請求項1記載の回転子の製造方法において、前記かしめ接続部の中心を前記樹脂溜めポットの中心に一致させることを特徴とする回転子の製造方法。
- 請求項1又は2記載の回転子の製造方法において、前記樹脂溜めポットと前記磁石挿入孔はランナーを介して連結されていることを特徴とする回転子の製造方法。
- 請求項1~3のいずれか1記載の回転子の製造方法において、前記磁石挿入孔が対となった磁石挿入孔対が複数組設けられ、
前記各磁石挿入孔対は、前記回転子積層鉄心の軸方向から見て、互いの径方向内側端部同士の間隔が互いの径方向外側端部同士の間隔よりも広くなるように形成され、
該磁石挿入孔対の中央の半径方向内側に前記かしめ接続部が設けられていることを特徴とする回転子の製造方法。 - 請求項1~4のいずれか1記載の回転子の製造方法において、前記樹脂溜めポットの直径は、前記かしめ接続部の最大幅の3~10倍の範囲にあることを特徴とする回転子の製造方法。
- 請求項1~5のいずれか1記載の回転子の製造方法において、前記樹脂溜めポットが形成された前記上型又は前記下型に接する前記回転子積層鉄心の表面には、前記かしめ接続部による窪みが形成されていることを特徴とする回転子の製造方法。
- 複数の鉄心片がかしめ接続部を介してかしめ積層され、各磁石挿入孔に永久磁石片が挿入された回転子積層鉄心を上型及び下型の間に挟み、前記上型又は前記下型に形成された樹脂溜めポットから前記磁石挿入孔に樹脂を充填する回転子の製造装置において、
前記かしめ接続部の中心を前記樹脂溜めポットの中心に一致させて、前記磁石挿入孔への樹脂封止を行うことを特徴とする回転子の製造装置。 - 請求項7記載の回転子の製造装置において、前記樹脂溜めポットは前記上型に設けられていることを特徴とする回転子の製造装置。
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US13/512,997 US8869379B2 (en) | 2009-12-09 | 2010-11-09 | Method for producing rotor |
CN201080055919.0A CN102652389B (zh) | 2009-12-09 | 2010-11-09 | 用于制造转子的方法和装置 |
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JP2009279690A JP5560031B2 (ja) | 2009-12-09 | 2009-12-09 | 回転子の製造方法及び製造装置 |
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EP2963788B1 (en) * | 2013-02-28 | 2019-09-04 | Mitsubishi Electric Corporation | Apparatus for injecting resin into layered core, method for injecting resin, and rotating electrical machine using same method for injecting resin |
JP6301822B2 (ja) | 2014-02-24 | 2018-03-28 | 株式会社三井ハイテック | 鉄心片の打ち抜き方法 |
JP6213654B2 (ja) * | 2015-11-12 | 2017-10-18 | ダイキン工業株式会社 | モータコア、およびそれを用いたモータならびに圧縮機 |
JP6597594B2 (ja) * | 2016-12-27 | 2019-10-30 | トヨタ自動車株式会社 | 回転子製造装置 |
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US5806169A (en) * | 1995-04-03 | 1998-09-15 | Trago; Bradley A. | Method of fabricating an injected molded motor assembly |
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JP4143631B2 (ja) * | 2005-09-01 | 2008-09-03 | トヨタ自動車株式会社 | ロータの製造方法 |
WO2011145399A1 (ja) * | 2010-05-18 | 2011-11-24 | 株式会社三井ハイテック | 回転子積層鉄心の製造方法 |
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JP2004357347A (ja) * | 2003-05-27 | 2004-12-16 | Toyota Motor Corp | 回転電機用ロータ |
JP2007215301A (ja) * | 2006-02-08 | 2007-08-23 | Toyota Motor Corp | ロータの製造方法 |
JP2007236020A (ja) * | 2006-02-27 | 2007-09-13 | Toyota Motor Corp | ロータおよび電動車両 |
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JP5560031B2 (ja) | 2014-07-23 |
CN102652389B (zh) | 2015-08-12 |
JP2011125116A (ja) | 2011-06-23 |
CN102652389A (zh) | 2012-08-29 |
US8869379B2 (en) | 2014-10-28 |
US20120227249A1 (en) | 2012-09-13 |
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