JP2002199666A - Rotary electric machine and its manufacturing method - Google Patents
Rotary electric machine and its manufacturing methodInfo
- Publication number
- JP2002199666A JP2002199666A JP2000393268A JP2000393268A JP2002199666A JP 2002199666 A JP2002199666 A JP 2002199666A JP 2000393268 A JP2000393268 A JP 2000393268A JP 2000393268 A JP2000393268 A JP 2000393268A JP 2002199666 A JP2002199666 A JP 2002199666A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- core
- mandrel
- inner diameter
- teeth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims description 26
- 229920005989 resin Polymers 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 25
- 238000000465 moulding Methods 0.000 claims description 21
- 230000000452 restraining effect Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 11
- 239000011295 pitch Substances 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 9
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 102100025490 Slit homolog 1 protein Human genes 0.000 description 1
- 101710123186 Slit homolog 1 protein Proteins 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、永久磁石モータ、
シンクロナスモータ、インダクションモータ、ステッピ
ングモータ等、固定子と回転子で構成されるモータ、あ
るいは発電機などの回転電機に係り、特にその固定子を
ヨーク部と突極磁極であるティース等に分割し、樹脂で
成形、またはその他の締結方法で成形加工した回転電機
および製造方法に関する。TECHNICAL FIELD The present invention relates to a permanent magnet motor,
The present invention relates to a motor composed of a stator and a rotor, such as a synchronous motor, an induction motor, and a stepping motor, or a rotating electric machine such as a generator.In particular, the stator is divided into a yoke and teeth, which are salient magnetic poles. TECHNICAL FIELD The present invention relates to a rotating electric machine formed by molding with a resin, or by other fastening methods, and a manufacturing method.
【０００２】[0002]
【従来の技術】上記モータの固定子コアを樹脂成形する
方法に関する従来技術としては、特開平８−７０５５０
号公報，特開平１０−２４８１９３号公報（従来技術
１）、および特開平６−１０５４８７号公報（従来技術
２）が知られている。2. Description of the Related Art As a prior art relating to a method of resin-molding a stator core of the above-mentioned motor, Japanese Patent Application Laid-Open No. Hei 8-70550 is known.
JP-A-10-248193 (Prior Art 1) and JP-A-6-105487 (Prior Art 2) are known.
【０００３】従来技術１に代表される固定子コア構造
は、図２（ａ）に示すように、突極磁極のティース部３
とヨーク部４からなる固定子コアが一体で打抜きされ、
そのコアに巻線を施し、樹脂封止することによって固定
子を得る構造を持つ。この構造は、コイルの絶縁確保と
コアとコイルの固定を目的としている。また、樹脂成形
で、固定子をハウジング及びエンドブラケットに固定す
る基準部分（インロー部）、軸受け保持部などを成形で
形成し、高精度化する目的も併せ持つ。As shown in FIG. 2A, a stator core structure represented by prior art 1 has teeth portions 3 of salient poles.
And the stator core composed of the yoke part 4 is punched integrally,
It has a structure in which a stator is obtained by winding the core and sealing it with resin. This structure aims at securing insulation of the coil and fixing the core and the coil. In addition, the resin molding is used to form a reference portion (inlay portion) for fixing the stator to the housing and the end bracket, a bearing holding portion, and the like, and also has a purpose of improving accuracy.
【０００４】また、従来技術２は、図２（ｂ）に示すよ
うにヨーク部とティース部を含めて複数に分割すること
で、ボビン巻線が可能となり巻線の高密度化を実現でき
るため、従来技術１に比べてモータを小形、高効率化で
きる。これは、固定子の１突極分のヨーク部とティース
部を持つピースを円周上に固定子の突極数分を配置する
ことにより固定子コアを得るため、コイル巻線作業を容
易にすることが可能となる。Further, in the prior art 2, as shown in FIG. 2 (b), a bobbin winding is made possible by dividing it into a plurality of parts including a yoke part and a tooth part, thereby realizing a high-density winding. In addition, the motor can be reduced in size and efficiency as compared with the prior art 1. This is because the stator core is obtained by arranging pieces of the stator having a yoke portion and a tooth portion for one salient pole of the stator on the circumference by the number of salient poles of the stator, thereby facilitating coil winding work. It is possible to do.
【０００５】[0005]
【発明が解決しようとする課題】上記従来技術１におい
ては、固定子コアに巻線を施す場合に、固定子のティー
ス先端部の開口部から、巻線を施すことになるので、占
積率の高い巻線ができないという問題がある。In the prior art 1 described above, when the winding is applied to the stator core, the winding is applied from the opening at the tip end of the teeth of the stator. However, there is a problem that high winding cannot be obtained.
【０００６】従来技術２は、従来技術１の問題を解決可
能であるが、固定子コアを分割し、巻線後に再組立する
ため、固定子の内径寸法精度，内径真円度等の組立精度
を確保できないといった問題点がある。また、この従来
技術では、組立後の固定子コアは円筒形状の心金を用い
て樹脂により封止される構造をとるが、分割されたコア
を封止する場合に、巻線後に再組立するため、一体打抜
きされたコアに比べて組立後の精度を確保するのに比較
的手間を必要とする。更に、固定子封止のためには成形
型に固定子をセットする必要があり、高精度に封止固定
子を得る為にはクリアランスがゼロの状態で型へセット
することが望ましいが、上記理由で作業が困難な為、あ
る程度のクリアランスが必要であり、位置決め誤差を誘
発し、封止製品の機械精度が悪化する課題があった。本
発明の目的は、分割コアを採用し、巻線を高占積率化し
たものを用いるモータにおいて、モータ効率を高め、か
つ、ティース先端部（固定子内径部）の寸法精度を高
め、モールドなどの固定法によって機械的強度を高め、
コギングトルクの少ない電動機を提供することにある。The prior art 2 can solve the problem of the prior art 1. However, since the stator core is divided and reassembled after winding, assembly accuracy such as inner diameter dimension accuracy and inner diameter roundness of the stator is required. Cannot be secured. Further, in this conventional technique, the assembled stator core has a structure in which the stator core is sealed with a resin using a cylindrical mandrel, but when the divided core is sealed, it is reassembled after winding. For this reason, it takes relatively much time and effort to secure the accuracy after assembling as compared with a core that is integrally punched. Furthermore, for sealing the stator, it is necessary to set the stator in the molding die, and in order to obtain the sealing stator with high precision, it is desirable to set the stator in a state with zero clearance. For this reason, the work is difficult, so that a certain amount of clearance is required, and there is a problem that a positioning error is induced and the mechanical accuracy of the sealed product is deteriorated. SUMMARY OF THE INVENTION An object of the present invention is to improve the motor efficiency and improve the dimensional accuracy of the tooth tip (the inner diameter of the stator) in a motor using a split core and a winding having a high space factor. Increase the mechanical strength by fixing methods such as
An object of the present invention is to provide a motor having a small cogging torque.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、固定子コアを樹脂封止する構造におい
て、封止金型の固定子内径部を拘束する心金部は、内側
から外側に向かって開くことができる構造を有し、その
心金部に、心金部の内径よりも大きい外径を有する軸を
挿入することによって、心金部、すなわち、固定子セッ
ト時は可能最小内径以下の寸法にて心金を挿入し、その
後、可能最大内径の寸法に心金寸法を拡張し、固定子内
径部のばらつきを可能最大内径に揃えた後、樹脂封止な
どの成形加工を施すことで、製品内径部の精度向上を狙
う。内径部の精度は、ティースピッチ間のばらつき、内
径真円度、内径寸法などをいう。In order to achieve the above object, the present invention relates to a structure for sealing a stator core with a resin, wherein a mandrel for restraining an inner diameter portion of a stator of a sealing mold has an inner core portion. Has a structure that can be opened outward from the shaft, and by inserting a shaft having an outer diameter larger than the inner diameter of the mandrel into the mandrel, the mandrel, that is, when setting the stator, Insert a mandrel with dimensions smaller than the smallest possible inner diameter, then expand the mandrel dimensions to the largest possible inside diameter, adjust the variation of the stator inside diameter to the largest possible inside diameter, and then mold with resin, etc. By processing, we aim to improve the accuracy of the inner diameter of the product. The accuracy of the inner diameter portion refers to variations between teeth pitches, inner diameter roundness, inner diameter dimensions, and the like.
【０００８】[0008]
【発明の実施の形態】本発明に係るモータ製造方法の実
施の形態について、図面を用いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a motor manufacturing method according to the present invention will be described with reference to the drawings.
【０００９】図１には、本発明に係るモータ封止金型の
一実施の形態である基本的な１２突極磁極でなる固定子
コア内径拘束心金構造を示す。FIG. 1 shows a basic structure of a stator core inner diameter restraining mandrel comprising 12 basic salient magnetic poles as an embodiment of a motor sealing mold according to the present invention.
【００１０】図１に示したコア構造は、円筒状のヨーク
部分（以下ヨーク部と称する）４と、分割された１２個
の突極磁極でなるティース部３を持つ回転電機固定子コ
アの例である。The core structure shown in FIG. 1 is an example of a rotating electric machine stator core having a cylindrical yoke portion (hereinafter referred to as a yoke portion) 4 and a teeth portion 3 comprising twelve divided salient poles. It is.
【００１１】この分割コア固定子を樹脂封止する金型の
内径拘束心金１は円筒状であり、固定子コアのティース
先端部スロット開口部をガイドする１２個のブレード１
ａを有し、固定子コアの突極磁極数に合わせてそのスロ
ットピッチ角度に等分され、さらに１２個のスリット１
ｂを有する構造を持つ。この内径拘束心金１の内径側に
心金１の内径よりも大きい外径を有する軸２を挿入する
ことによって、心金１は固定子内径を径方向に拡張する
機能を持つ。The inner diameter restricting mandrel 1 of the mold for resin-sealing the split core stator is cylindrical, and has twelve blades 1 for guiding the slot opening of the teeth tip of the stator core.
a, the slot pitch angle is equally divided according to the number of salient magnetic poles of the stator core, and twelve slits 1
b. By inserting a shaft 2 having an outer diameter larger than the inner diameter of the mandrel 1 into the inner diameter side of the inner diameter restraining mandrel 1, the mandrel 1 has a function of expanding the inner diameter of the stator in the radial direction.
【００１２】この拡張によって、分割コアを再組立した
ときのコア精度を心金１の加工精度程度に向上すること
ができる。また、ブレード１ａが周方向の等分割機能を
有している。[0012] By this expansion, the core accuracy when the split core is reassembled can be improved to the processing accuracy of the mandrel 1. Further, the blade 1a has a function of equally dividing in the circumferential direction.
【００１３】図１に示すような構造の分割コアにおいて
は、ヨーク部４とティース部３を略台形形状で形成され
た嵌合部６に組立のための微小な隙間（ギャップ）が必
要である。たとえば、この図１のように軸方向に組立す
る構造においては、はめあい公差程度の隙間が必要とな
る。その隙間のうち、ラジアル方向（径方向）の隙間を
なくす必要がある場合の組立方法として本発明が有効で
ある。In the split core having the structure as shown in FIG. 1, a small gap (gap) is required for assembling the yoke portion 4 and the teeth portion 3 in the fitting portion 6 having a substantially trapezoidal shape. . For example, in the structure assembled in the axial direction as shown in FIG. 1, a gap having a fitting tolerance is required. The present invention is effective as an assembling method when it is necessary to eliminate a radial (radial) gap among the gaps.
【００１４】本発明の心金構造は、分割コア組立後の内
径部分の精度を成形前に矯正し、その状態を保持したま
ま、組立後の精度を向上して樹脂成形するための方法で
ある。図３に心金１の構造を示す。中空の円筒に軸方向
に一部スリットもブレードも設けない箇所を残し突極磁
極数と同じ１２ヶ所のスリット１ｂと、１２個の隣あわ
せる突極磁極間の開口部２１に挿入されるブレード１ａ
を等ピッチで配置しスリットのある部分が径方向にある
程度可動できる構造とする。その内径寸法をφｄ１とす
る。φｄ2部分に固定子コアが配置される。スリット１
ｂとブレード１ａは固定子コアの軸方向長さに対し、長
い寸法で構成され、その軸端部にはスリットとブレード
は設けていない。The mandrel structure of the present invention is a method for correcting the accuracy of the inner diameter portion after assembling the divided core before molding, and improving the accuracy after assembling while maintaining the state to perform resin molding. . FIG. 3 shows the structure of the mandrel 1. Twelve slits 1b having the same number of salient poles except a part where no slit or blade is provided in the hollow cylinder in the axial direction, and a blade 1a inserted into an opening 21 between twelve adjacent salient poles
Are arranged at an equal pitch so that a portion having a slit can be moved to some extent in the radial direction. The inner diameter and .phi.d 1. The stator core is arranged in the φd 2 portion. Slit 1
The length b and the blade 1a are longer than the length of the stator core in the axial direction.
【００１５】図４に心金１に挿入する軸２を示す。この
軸の外径寸法は、φｄ2とし、心金内径との関係を式1に
示すように、心金１の内径寸法φｄ１よりも軸２の外径
寸法φｄ2を大きくする関係とする。この関係をもつこ
とで、図５に示すように、心金へ軸を挿入する前の心金
外径寸法φＤ１よりも心金へ軸を挿入した後の心金外径
寸法φＤ2が大きくなる式２の関係となる。この構造を
固定子内径の拡張位置決めに採用し、固定子内径の精度
向上を実現する。FIG. 4 shows a shaft 2 to be inserted into the mandrel 1. The outer diameter of the shaft is φd 2 , and the relationship with the inner diameter of the mandrel is as shown in Expression 1, so that the outer diameter of the shaft 2 is larger than the inner diameter φd 1 of the mandrel 1. . By having this relationship, as shown in FIG. 5, the mandrel outer diameter dimension φD 2 after the shaft is inserted into the mandrel is larger than the mandrel outer diameter dimension φD 1 before the mandrel is inserted into the mandrel. Equation 2 is obtained. This structure is employed for the extended positioning of the inner diameter of the stator, thereby improving the accuracy of the inner diameter of the stator.
【００１６】図６にその手順を示す。（ａ）に固定子の
横断面図を示す。手順としてまず、（ｂ）に示すように
固定子に心金をセットする。心金のブレード１ａは磁極
間の開口部に挿入される。また、心金１のスリット部１
ｂはティース先端部の周方向中央部に位置する。この心
金は突極磁極の内径に比べ小さいので固定子内径の精度
などの出来如何にかかわらず、容易にセットすることが
できる。次に、心金の内側に、テーパ形状の部分から軸
を挿入し、心金の内径、外径を広げ、固定子内径のティ
ースの嵌合部隙間によるガタ分の遊びを吸収する。これ
によって、この心金装着時のティース先端位置精度は、
この心金の加工精度程度に抑えることができる。この精
度を保ち、図６のセット状態で固定子を樹脂封止するこ
とで固定子の内径部精度の確保ができる。FIG. 6 shows the procedure. (A) shows a cross-sectional view of the stator. As a procedure, first, a mandrel is set on the stator as shown in FIG. The mandrel blade 1a is inserted into the opening between the magnetic poles. Also, the slit portion 1 of the mandrel 1
b is located at the center in the circumferential direction of the tooth tip. Since this mandrel is smaller than the inner diameter of the salient pole, it can be easily set regardless of the accuracy of the inner diameter of the stator. Next, a shaft is inserted from the tapered portion inside the mandrel, the inner diameter and the outer diameter of the mandrel are increased, and the play of the backlash due to the clearance between the teeth of the stator inner diameter is fitted. As a result, the tooth tip position accuracy when attaching this mandrel is
The processing accuracy of the mandrel can be suppressed to about the same level. By maintaining this accuracy and sealing the stator with a resin in the set state of FIG. 6, the accuracy of the inner diameter portion of the stator can be ensured.
【００１７】図７に樹脂成形金型の構造を示す。樹脂金
型の下型１２に心金1，軸２と嵌合する箇所を設け、成
形型内部に固定子、心金をセットできる構造とする。金
型上部には、樹脂の注入口９を設け、その注入口を有す
る上型の内部に心金の一部が拘束される構造とする。こ
れにより、上型と下型のは心金によって軸ずれのない構
造となる。型で囲まれた空間部に樹脂を注入すること
で、モールドされた固定子を得ることができる。この成
形後の内径真円度は心金によって位置決めされた状態の
まま成形されるため、心金の加工精度程度の真円度を確
保できる。FIG. 7 shows the structure of a resin molding die. The lower mold 12 of the resin mold is provided with a place where the mandrel 1 and the shaft 2 are fitted, so that the stator and the mandrel can be set inside the mold. A resin injection port 9 is provided at the upper part of the mold, and a part of the core is restrained inside the upper mold having the injection port. As a result, the upper mold and the lower mold have a structure that is free from axial misalignment due to the mandrel. By injecting resin into the space surrounded by the mold, a molded stator can be obtained. Since the roundness of the inner diameter after the forming is formed while being positioned by the mandrel, the roundness of the processing accuracy of the mandrel can be secured.
【００１８】本実施例によれば、軸２を挿入することに
よって、心金１の外径側がティースの内径側に密着する
ので、ティースの回転子に対向する内径側に樹脂が付か
ない状態で樹脂封止できる。樹脂封止したときにティー
スの内側に薄い樹脂膜ができると、電磁振動によっては
がれ落ちる虞があるが、本実施例によればこのようなこ
とがない。According to the present embodiment, since the outer diameter side of the mandrel 1 is brought into close contact with the inner diameter side of the teeth by inserting the shaft 2, the resin is not attached to the inner diameter side of the teeth facing the rotor. Can be sealed with resin. If a thin resin film is formed inside the teeth when the resin is sealed, there is a possibility that the thin film is peeled off by electromagnetic vibration. However, according to the present embodiment, such a problem does not occur.
【００１９】図８に本発明の実施例にさらに工程を加え
ることで高精度化できる例を示す。固定子のコイルの占
積率が高い場合など、ティースの傾きによって軸を挿入
することが困難な場合に、軸を挿入する場合に加振器で
振動を加えながら挿入することが有効である。ＸＹＺ方
向の細かい振動を与えることによって、ティース先端を
矯正することができ、小さな挿入力で軸の挿入ができ
る。また、挿入後にθ方向に細かい正逆の加振を行なう
ことで、組立したティースとヨークの局部的な残留応力
を開放することが出来るため、位置が落ち着く効果があ
る。この場合、加振周波数は１００Hz〜１kHzとする。
また、加振振幅(p-p)は、ティースとヨークの嵌合部の
微少隙間程度を与えるのが良い。例えば本実施例ではテ
ィースとヨークの嵌合部の微少隙間が１０μｍ程度なの
で加振振幅(p-p)を１０μｍ程度とする。FIG. 8 shows an example in which the accuracy can be improved by adding further steps to the embodiment of the present invention. When it is difficult to insert the shaft due to the inclination of the teeth, for example, when the space factor of the coils of the stator is high, it is effective to insert the shaft while applying vibration with a vibrator when inserting the shaft. By giving fine vibration in the XYZ directions, the tip of the teeth can be corrected, and the shaft can be inserted with a small insertion force. Further, by performing fine forward and reverse vibrations in the θ direction after the insertion, local residual stresses of the assembled teeth and yoke can be released, so that the position is calmed down. In this case, the excitation frequency is 100 Hz to 1 kHz.
Further, the vibration amplitude (pp) is preferably set to give a small gap between the fitting portion of the teeth and the yoke. For example, in the present embodiment, the vibration amplitude (pp) is set to about 10 μm because the minute gap between the fitting portion of the teeth and the yoke is about 10 μm.
【００２０】図９には本発明の第２の実施例を示す。図
２の（ｂ）の構造をもつ分割コアモータにおいても、こ
の手法が適用可能である。この分割コア方法を用いる場
合には、コアが分割されているため、心金による内径方
向からの拡張作用により外径方向に押されて、コアが開
いてしまわないように、外径部押さえ金具１１でコアの
外周方向から内径側に向かう方向に押しつけて組立する
ことが必須であるが、内側にも外側からの力に耐える心
金が必要であるため、本発明の心金が有効である。つま
り、分割コアを組立するときに、内側と外側から押し付
け合い、正規の位置にコアを位置決めした状態で、第１
実施例の樹脂封止固定の代わりにレーザ溶接などの分割
コア固定を行なうことで高精度の内径をもつモータ固定
子を得ることができる。FIG. 9 shows a second embodiment of the present invention. This method is also applicable to a split core motor having the structure shown in FIG. When this split core method is used, since the core is divided, the outer diameter portion pressing bracket is pressed so that the core is not opened by being pushed in the outer diameter direction by the expansion action from the inner diameter direction by the core. It is essential to assemble the core by pressing in the direction from the outer peripheral direction to the inner radial side of the core at 11, but the core metal of the present invention is effective because a core metal that can withstand a force from the outside is also required inside. . In other words, when assembling the split core, the first and second cores are pressed against each other from the inside and outside, and the core is positioned at a regular position.
A motor stator having a highly accurate inner diameter can be obtained by performing split core fixing such as laser welding instead of the resin sealing fixing of the embodiment.
【００２１】図１０に本発明の第３の実施例をしめす。
図１０に示すように本発明の心金にスリットとブレード
を構成した心金は、アウターロータ型のモータの固定子
に対しても同様の効果を持つ。また、その組立方法も内
径と外径を反転するだけで基本的な考え方は同じであ
る。また、本発明のブレード形状は、三角形状としても
周方向分割精度を確保される。FIG. 10 shows a third embodiment of the present invention.
As shown in FIG. 10, the mandrel of the present invention in which the mandrel is formed with slits and blades has the same effect on the stator of the outer rotor type motor. In addition, the basic concept of the assembling method is the same except that the inner diameter and the outer diameter are reversed. In addition, the blade shape of the present invention secures circumferential division accuracy even if it is triangular.
【００２２】また、第１の実施例の心金の拡張方法は、
心金内径よりも太い軸の挿入のほか、空気，油圧式バル
ーンチャック、ねじ式拡張機構なども応用できる。図１
１にバルーンチャックによって拘束する構造を示す．金
型の内部に、心金１の内側に圧縮空気を供給する配管１
５を設け、その配管を通じて圧縮空気を供給する。心金
の内側には、ゴムなどの収縮可能な部材で構成されたバ
ルーンチャックを設け、圧縮空気の供給により、心金を
拡張する。図１２にネジ式の拡張機構を示す。ネジを締
めつけすることによって心金１を拡張することができる
構成となっている。The method of expanding the mandrel of the first embodiment is as follows.
In addition to inserting a shaft larger than the inner diameter of the mandrel, pneumatic, hydraulic balloon chucks, screw-type expansion mechanisms, etc. can also be applied. FIG.
Fig. 1 shows the structure restrained by the balloon chuck. Piping 1 for supplying compressed air to the inside of the mandrel 1 inside the mold
5 is provided, and compressed air is supplied through the piping. A balloon chuck made of a contractible member such as rubber is provided inside the mandrel, and the mandrel is expanded by supplying compressed air. FIG. 12 shows a screw type expansion mechanism. The structure is such that the mandrel 1 can be expanded by tightening the screws.
【００２３】なお、本発明は、発電機であってもモータ
と同様に適用できる。The present invention can be applied to a generator as well as a motor.
【００２４】[0024]
【発明の効果】本発明によれば、樹脂モールドによって
コア，コイルを固定する方式のため、機械的強度が高
い。また、心金にスリットとブレードを設けた構成で、
心金を基準で成形するため、内径真円度などの精度も高
いモータを実現することが可能である。これによってモ
ータとしてコギングトルクが低減でき、特に低速回転時
の制御性が向上し、脈動トルクが小さくなるので低振
動、低騒音なモータを実現することが可能となる。According to the present invention, since the core and the coil are fixed by the resin mold, the mechanical strength is high. In addition, with the configuration that the slit and the blade are provided in the mandrel,
Since the mandrel is formed on the basis of the mandrel, it is possible to realize a motor having high accuracy such as roundness of the inner diameter. As a result, the cogging torque of the motor can be reduced, the controllability at the time of low-speed rotation is improved, and the pulsation torque is reduced, so that a motor with low vibration and low noise can be realized.
【図１】本発明に係る電動機コア内径成形方法の基本的
な構造を示す断面図である。FIG. 1 is a sectional view showing a basic structure of an electric motor core inner diameter forming method according to the present invention.
【図２】本発明に関連する公知のコア形状の形態を示す
図である。FIG. 2 is a view showing a form of a known core shape related to the present invention.
【図３】本発明の内径拘束心金の構造を示す断面図およ
び側面図である。FIG. 3 is a cross-sectional view and a side view showing the structure of the inner diameter restraining mandrel of the present invention.
【図４】本発明の内径拘束心金の内側に挿入する軸形状
を示す側面図である。FIG. 4 is a side view showing a shaft shape to be inserted inside the inner diameter restraining mandrel of the present invention.
【図５】本発明の内径拘束心金と軸の組立関係を示す側
面図である。FIG. 5 is a side view showing an assembling relationship between the inner diameter restraining mandrel and the shaft according to the present invention.
【図６】本発明の内径拘束心金と軸をモータ固定子の内
径部拡張に使用する例を示す図面。FIG. 6 is a drawing showing an example in which the inner diameter restricting mandrel and the shaft of the present invention are used for expanding the inner diameter portion of a motor stator.
【図７】本発明の内径拘束心金を装着した固定子を樹脂
成形する場合の樹脂成形金型構造を示す断面図である。FIG. 7 is a cross-sectional view showing a resin-molding mold structure when resin-molding a stator to which the inner diameter restraining mandrel of the present invention is mounted.
【図８】本発明の内径拘束心金をモータ固定子に装着
し、加振器によって振動を与える方法を説明する側面図
である。FIG. 8 is a side view for explaining a method of attaching the inner diameter restraining mandrel of the present invention to a motor stator and applying vibration by a vibrator.
【図９】本発明の内径拘束心金を異なる分割コア構造の
モータに適用する例を示す断面図である。FIG. 9 is a sectional view showing an example in which the inner diameter restricting mandrel of the present invention is applied to motors having different split core structures.
【図１０】本発明の心金をアウターロータタイフ゜のモータ
に適用し、外径側を拘束する心金とした例を示す断面図
である。FIG. 10 is a cross-sectional view showing an example in which the mandrel of the present invention is applied to a motor of an outer rotor type, and is a mandrel for restraining the outer diameter side.
【図１１】本発明の心金の内側にゴムなどの部材のバル
ーンチャックを設け圧縮空気によって、拡張して内径を
拘束する心金とした例を示す断面図である。FIG. 11 is a cross-sectional view showing an example in which a balloon chuck made of a member such as rubber is provided inside a mandrel of the present invention, and the mandrel is expanded by compressed air to restrict the inner diameter.
【図１２】本発明の心金をネジによって内径を拡張して
拘束する心金とした例を示す断面図である。FIG. 12 is a cross-sectional view showing an example in which the mandrel of the present invention is a mandrel that expands the inner diameter with a screw and restricts the mandrel.
１…心金、 １ａ…ブレード、 １ｂ…スリット、 ２
…軸、 ３…突極磁極であるティース、 ４…ヨーク、
５…コイル、 ６…ティースとヨークの嵌合部、 ７
…シャフト、 ８…マグネット、 φｄ１…内径拘束心
金の軸挿入前の内径寸法、 φｄ２…軸の外径寸法、
φＤ１…内径拘束心金の軸挿入前の外径寸法、 φＤ２
…内径拘束心金の軸挿入後の外径寸法、 ９…樹脂注入
口、 １０…レーザ溶接ヘッド、 １１…外径部押え治
具、 １２…樹脂成形金型、 １３…加振器、 １５…
空気配管、 １６…バルーンチャック、 １７…拡張ネ
ジ、２０…固定子コア、 ２１…開口部。1 ... mandrel, 1a ... blade, 1b ... slit, 2
... axis, 3 ... teeth which are salient magnetic poles, 4 ... yoke,
5 ... coil, 6 ... fitting part of teeth and yoke, 7
… Shaft, 8… Magnet, φd 1 … Inner diameter before insertion of inner diameter restraining mandrel, φd 2 … Outer diameter of shaft,
φD 1 … Diameter of inner diameter restraining mandrel before shaft insertion, φD 2
... Outer diameter of inner diameter restraining mandrel after shaft insertion, 9 ... Resin injection port, 10 ... Laser welding head, 11 ... Outer diameter part holding jig, 12 ... Resin molding die, 13 ... Vibrator, 15 ...
Pneumatic piping, 16: balloon chuck, 17: expansion screw, 20: stator core, 21: opening.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 種田 幸記 神奈川県横浜市戸塚区吉田町292番地 株 式会社日立製作所生産技術研究所内 (72)発明者 大原 光一郎 千葉県習志野市東習志野七丁目１番１号 株式会社日立ドライブシステムズ内 (72)発明者 酒井 俊彦 千葉県習志野市東習志野七丁目１番１号 株式会社日立ドライブシステムズ内 (72)発明者 虻川 俊美 東京都千代田区神田美土代町７ 日本サー ボ株式会社内 Ｆターム(参考） 5H002 AA07 AA08 AA09 AB06 AC02 AC07 AC08 5H604 AA05 AA08 BB01 BB03 BB09 BB10 BB14 BB15 CC01 CC05 CC16 DB01 PE06 5H615 AA01 BB01 BB02 BB06 BB07 BB08 BB14 PP01 PP07 PP10 RR07 SS10 SS13 SS17 SS44 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuki Taneda 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside of Hitachi, Ltd. Production Technology Research Institute (72) Inventor Koichiro Ohara 7-1-1 Higashi-Narashino, Narashino-shi, Chiba 1 Hitachi Drive Systems Co., Ltd. (72) Inventor Toshihiko Sakai 7-1-1 Higashi Narashino, Narashino City, Chiba Prefecture Hitachi Drive Systems Co., Ltd. F term in Servo Co., Ltd. (reference)
Claims (12)
どに分割されたコアで構成される回転電機の固定子コア
の製造方法において、回転子面と対向する固定子のティ
ース面を基準とする真円を形成した部材をティース部と
ヨーク部の嵌合部のギャップを極小化する方向に拡張し
てティースを押すとともに、各ティースの円周方向の角
度割出位置の精度を補償する複数の突起部をそのスロッ
ト数に応じて前記部材の円周上に割出精度良く配置し、
各ティース間に嵌入させ、さらに、各ティースの径方向
の角度精度を補償するティース先端の回転子との相対面
に基準となる真円を形成した拡張治具を用いた方法で位
置決め固定して組み立てることを特徴とした固定子コア
の製造方法。1. A method of manufacturing a stator core of a rotating electric machine comprising a core divided into a cylindrical yoke core and a tooth core, etc., wherein a stator tooth surface facing a rotor surface is used as a reference. A member that forms a perfect circle that expands in the direction to minimize the gap between the fitting portion of the tooth portion and the yoke portion, pushes the tooth, and compensates for the accuracy of the angular indexing position in the circumferential direction of each tooth. The protrusions are arranged with good indexing accuracy on the circumference of the member according to the number of slots,
It is inserted between each tooth, and further, it is positioned and fixed by a method using an expansion jig that forms a perfect circle as a reference on a relative surface with a rotor at the tip of the tooth to compensate for the angular accuracy in the radial direction of each tooth. A method for manufacturing a stator core, characterized by assembling.
どの分割されたコアで構成される内側回転子構造の回転
電機の固定子コアの製造方法において、固定子内径部に
スリットを有する中空円筒状の心金部を装着し、固定子
内径を拡張させる機能をもち、その機能を内径の真円度
を補正する手段として成形を行なうことを特徴とする固
定子コアの製造方法。2. A method for manufacturing a stator core of a rotating electric machine having an inner rotor structure comprising a divided core such as a cylindrical yoke core and a teeth core. A method of manufacturing a stator core, comprising: mounting a cylindrical mandrel to expand a stator inner diameter; and performing molding as a means for correcting the roundness of the inner diameter.
どの分割されたコアで構成される外側回転子構造の回転
電機の固定子コアの製造方法において、固定子外径部に
スリットを有する中空円筒状の心金部を装着し、固定子
内径を収縮させる機能をもち、その機能を外径の真円度
を補正する手段として成形を行なうことを特徴とする固
定子コアの製造方法。3. A method for manufacturing a stator core of a rotating electric machine having an outer rotor structure comprising a divided core such as a cylindrical yoke core and a teeth core, wherein a stator outer diameter portion has a slit. A method for manufacturing a stator core, comprising: mounting a hollow cylindrical mandrel and contracting the inner diameter of a stator, and performing molding as a means for correcting the roundness of the outer diameter.
どの分割されたコアで構成される内側回転子構造の回転
電機の固定子コアの製造方法において、固定子内径部に
中空円筒状の心金部を装着し、その心金部は外周に固定
子の磁極極数と同数の分割ピッチで固定子スロットの開
口部をガイドするブレードを設けることにより、固定子
内径のティース周方向位置を拘束できる構造を有し、そ
の心金部を装着した状態で成形を行なうことを特徴とす
る固定子コアの製造方法。4. A method for manufacturing a stator core of a rotating electric machine having an inner rotor structure comprising a divided core such as a cylindrical yoke core and a teeth core. The cored bar is mounted, and the cored bar is provided on the outer circumference with a blade that guides the opening of the stator slot at the same division pitch as the number of magnetic poles of the stator, so that the teeth circumferential position of the stator inner diameter can be adjusted. A method for manufacturing a stator core, characterized in that the stator core has a structure capable of being restrained, and is formed with the mandrel attached.
どの分割されたコアで構成される外側回転子構造の回転
電機の固定子コアの製造方法において、固定子外径部に
中空円筒状の心金部を装着し、その心金部は外周に固定
子の磁極極数と同数の分割ピッチで固定子スロットの開
口部をガイドするブレードを設けることにより、固定子
外径のティース周方向位置を拘束できる構造を有し、そ
の心金部を装着した状態で成形を行なうことを特徴とす
る固定子コアの製造方法。5. A method for manufacturing a stator core of a rotating electric machine having an outer rotor structure comprising a divided core such as a cylindrical yoke core and a teeth core. By installing a blade on the outer periphery of the outer periphery of the stator with the same number of divided poles as the number of magnetic poles of the stator to guide the opening of the stator slot, the outer diameter of the stator in the teeth circumferential direction is provided. A method for manufacturing a stator core, having a structure capable of restraining the position, and performing molding with the mandrel attached.
心金部を装着し、その心金部は外周に固定子の磁極極数
と同数の分割ピッチで固定子スロットの開口部をガイド
するブレードを設けることにより、固定子内径のティー
ス位置を拘束できる構造を有し、その心金部を装着した
状態で加振器などにより、心金部、または、固定子コア
全体に振動を与えながら成形を行なうことを特徴とする
モータ固定子の製造方法。6. A hollow cylindrical mandrel is mounted on the inner or outer diameter portion of the stator, and the mandrel has an opening of a stator slot on the outer periphery at a division pitch equal to the number of magnetic poles of the stator. By providing a blade to guide the teeth, the teeth position of the stator inner diameter can be restrained, and the mandrel or the whole stator core is vibrated by a vibrator or the like with the mandrel attached. A method for manufacturing a motor stator, wherein forming is performed while applying force.
心金部を装着し、その心金部は外周に固定子の極数と同
数の分割ピッチで固定子スロットの開口部をガイドする
ブレードを設けることにより、固定子内径のティース位
置を拘束できる構造を有し、その心金部を装着した状態
で、かつ、外周部からコアを内周に向かって押えながら
コア分割部のレーザ溶接などのコア締結加工を行なうこ
とを特徴とするモータ固定子の製造方法。7. A hollow cylindrical mandrel is attached to the inner or outer diameter portion of the stator, and the mandrel has an opening of a stator slot on the outer periphery at a division pitch equal to the number of poles of the stator. By providing a blade to guide, it has a structure that can restrain the teeth position of the inner diameter of the stator, with the mandrel attached, and while pressing the core from the outer periphery toward the inner periphery, A method for manufacturing a motor stator, comprising performing a core fastening process such as laser welding.
造された固定子コアを有する回転電機。8. A rotating electric machine having a stator core manufactured by the manufacturing method according to claim 1.
前記中空円筒状の心金部の中空部の内側に挿入する前記
円筒状部の内径寸法より外径寸法の大きな軸とを備え、
前記心金部を固定子コアの内径側に挿入し前記軸を前記
心金部の内径側に挿入することにより前記心金部の内径
を拡張して該心金部の外径側を前記固定子のティース内
周面に真円度を補正するように密着させて樹脂成形を行
なう樹脂成形金型。9. A hollow cylindrical mandrel having a slit,
A shaft having a larger outer diameter than the inner diameter of the cylindrical portion to be inserted inside the hollow portion of the hollow cylindrical cored portion,
The inner diameter of the mandrel is expanded by inserting the mandrel into the inner diameter side of the stator core and the shaft is inserted into the inner diameter of the mandrel to fix the outer diameter side of the mandrel. A resin molding die that performs resin molding by closely contacting the inner peripheral surface of the teeth of the child so as to correct the roundness.
と、中空円筒状部の内径が前記心金部の中空円筒状部の
外径より小さな寸法である軸を備え、前記心金部を固定
子コアの外径側に外嵌し、前記軸を前記心金部の外径側
に外嵌することにより前記心金部の外径側を圧縮して該
心金部の内径側を前記固定子のティース外周面に真円度
を補正するように密着させて樹脂成形を行なう樹脂成形
金型。10. A hollow cylindrical mandrel having a slit, and a shaft having an inner diameter of the hollow cylindrical portion smaller than an outer diameter of the hollow cylindrical portion of the mandrel. The outer diameter side of the stator core is externally fitted to the outer diameter side of the stator core, and the outer diameter side of the core metal part is compressed by fitting the shaft to the outer diameter side of the core metal part. A resin molding die that performs resin molding by closely contacting the outer circumference of the teeth of the stator so as to correct the roundness.
金部と、前記心金部の外周側に固定子の極数と同数の分
割ピッチで固定子スロットの開口部をガイドするブレー
ドを有し、その心金部を固定子内側表面に装着した状態
で成形を行なうことを特徴とする樹脂成形金型。11. A hollow cylindrical mandrel to be mounted on the inner diameter of the stator, and a blade for guiding the opening of the stator slot on the outer peripheral side of the mandrel at the same divisional pitch as the number of poles of the stator. A resin molding die, characterized in that molding is performed in a state where the mandrel is mounted on the inner surface of the stator.
金部と、前記心金部の内周側に固定子の極数と同数の分
割ピッチで固定子スロットの開口部をガイドするブレー
ドを有し、その心金部を固定子外側表面に装着した状態
で成形を行なうことを特徴とするモータ固定子の樹脂成
形金型。12. A hollow cylindrical mandrel to be mounted on the outer diameter of the stator, and guides the opening of the stator slot on the inner peripheral side of the mandrel at the same pitch as the number of poles of the stator. A resin molding die for a motor stator, characterized in that molding is performed in a state in which the core is mounted on the outer surface of the stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000393268A JP3936534B2 (en) | 2000-12-21 | 2000-12-21 | Stator core and motor stator manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000393268A JP3936534B2 (en) | 2000-12-21 | 2000-12-21 | Stator core and motor stator manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002199666A true JP2002199666A (en) | 2002-07-12 |
| JP3936534B2 JP3936534B2 (en) | 2007-06-27 |
Family
ID=18859095
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|---|---|---|---|
| JP2000393268A Expired - Fee Related JP3936534B2 (en) | 2000-12-21 | 2000-12-21 | Stator core and motor stator manufacturing method |
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| Country | Link |
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| JP2006271093A (en) * | 2005-03-23 | 2006-10-05 | Harmonic Drive Syst Ind Co Ltd | Method and tool for attaching stator of split core motor |
| WO2008099661A1 (en) * | 2007-02-13 | 2008-08-21 | Daikin Industries, Ltd. | Stator |
| JP2011109774A (en) * | 2009-11-16 | 2011-06-02 | Mitsubishi Electric Corp | Rotating electric machine |
| US8205322B2 (en) | 2004-09-09 | 2012-06-26 | Mitsui High-Tec, Inc. | Method of manufacturing laminated core |
| JP2013138586A (en) * | 2011-12-28 | 2013-07-11 | Daikin Ind Ltd | Armature and manufacturing method thereof |
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