JP3979293B2 - Coil correcting device, coil correcting method, and motor manufacturing method - Google Patents

Coil correcting device, coil correcting method, and motor manufacturing method Download PDF

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JP3979293B2
JP3979293B2 JP2003005388A JP2003005388A JP3979293B2 JP 3979293 B2 JP3979293 B2 JP 3979293B2 JP 2003005388 A JP2003005388 A JP 2003005388A JP 2003005388 A JP2003005388 A JP 2003005388A JP 3979293 B2 JP3979293 B2 JP 3979293B2
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connecting member
coil
screw
screw shaft
screw section
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JP2004222386A (en
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正宜 芳賀
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Toyota Motor Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は，コアのスロットに挿入されたコイルの形状を修正するコイル修正装置およびコイル修正方法およびモータの製造方法に関する。さらに詳細には，スロットの入口側および出口側の双方のコイルエンド部を同時に修正するコイル修正装置およびコイル修正方法およびモータの製造方法に関するものである。
【０００２】
【従来の技術】
従来より，例えばモータステータとして，略円環状の珪素鋼板などを積み重ねた積層コアや筒形のコアに，複数のコイルが取り付けられて形成されるものがある。図１１に示すように，このようなコア１０１には，内周側に軸方向の複数の溝（スロット１０２）が形成されており，あらかじめ巻回されたコイル１０３がそのスロット１０２に押し込まれる。押し込まれたコイル１０３は，コア１０１の両端面から突出したループ状のコイルエンド部１０３ａ，１０３ｂを有する。この図は，一般的なインサータによってコア１０１の図中上方側からコイル１０３が押し込まれた状態を示したものである。このコイルエンド部は，次工程の支障とならないようにスロット１０２の外径側へ折り曲げ，できるだけコンパクトな形状に成形する必要がある。そのため，このコイルエンド部を成形するためのコイル成形装置が各種提案されている（例えば，特許文献１，特許文献２参照。）。
【０００３】
ところが，挿入されたコイル１０３のコイルエンド部は，挿入入口側１０３ａ（図中上方）と挿入出口側１０３ｂ（図中下方）とでは異なった形状をとる。そして，図１２の断面図に示すように，一般に入口側１０３ａの内径長ＬＡは比較的余裕があるのに対し，出口側１０３ｂの内径長ＬＢは短くなる。そのため，特に出口側１０３ｂにおいては，コイル１０３の成形に大きな負荷が必要となり，被膜が破損する等のおそれがあった。また，出口側１０３ｂの内径長ＬＢが十分に長くなるように，あらかじめ大きく巻いたコイルを使用することは，導線の使用量が増加するので好ましくない。
【０００４】
これに対して，図１３に示すように，適正な大きさで四角錐台形に巻回したコイル１１０によって，挿入後のコイル１１０の出口側内径部１１１の周長が十分となるようにしたインサータ１１２が考案されている（特許文献３参照。）。このインサータ１１２によれば，ブレード１１３に挟み込んだコイル１１０を，第１押し上げ機構１１４によってその先端形状を保って軸方向へ押し上げる。その後，第２押し上げ機構１１５によってコイル１１０の出口側内径部１１１を外径方向に押し上げるのである。なお，図１３では，コアの下方から上方へ向かってコイル１１０を押し上げるインサータ１１２として示している。
【０００５】
【特許文献１】
特開昭６３−５９７５１号公報（第１−４図）
【特許文献２】
特開平７−１８４３５９号公報（第１図）
【特許文献３】
特開２００２−１２５３４０号公報（第６−９頁，第２０図）
【０００６】
【発明が解決しようとする課題】
しかしながら，前記した従来の技術では，コイル１１０の入口側は修正されていない。出口側と入口側とは連続した導線であるので，片方を修正することによって他方の形状が変わる場合がある。従って，両側のコイルエンド部を同時に修正できることが望ましい。また，既存のインサータを無駄にすることなく，簡単な作業でできるコイル修正方法が望まれていた。
【０００７】
本発明は，前記した従来のコイル修正方法が有する問題点を解決するためになされたものである。すなわちその課題とするところは，コアのスロットに挿入されたコイルの両側のコイルエンド部を容易に修正可能なコイル修正装置およびコイル修正方法およびモータの製造方法を提供することにある。
【０００８】
【課題を解決するための手段】
この課題の解決を目的としてなされた本発明のコイル修正装置は，第１ネジ区間，および，これと逆向きの第２ネジ区間を有する第１ネジ軸と，第１ネジ区間と相対する第３ネジ区間，およびこれと逆向きであるとともに第２ネジ区間と相対する第４ネジ区間を有し，第１ネジ軸と平行に配置された第２ネジ軸と，第１ネジ区間に螺合するとともに第１ネジ軸の回転により軸方向に移動する第１連結部材と，第２ネジ区間に螺合するとともに第１ネジ軸の回転により軸方向に，かつ，第１連結部材の移動と逆向きに移動する第２連結部材と，第３ネジ区間に螺合するとともに第２ネジ軸の回転により軸方向に移動する第３連結部材と，第４ネジ区間に螺合するとともに第２ネジ軸の回転により軸方向に，かつ，第３連結部材の移動と逆向きに移動する第４連結部材と，第１連結部材に回動可能に取り付けられた第１拡張部材と，第２連結部材に回動可能に取り付けられた第２拡張部材と，第１拡張部材と第３連結部材とを結ぶ第１リンク部材と，第２拡張部材と第４連結部材とを結ぶ第２リンク部材とを有するものである。
【０００９】
すなわち，本発明では，第１ネジ軸の回転によって，第１連結部材と第２連結部材とがそれぞれ逆方向へ移動される。また，第２ネジ軸の回転によって，第３連結部材と第４連結部材とがそれぞれ逆方向へ移動される。すなわち，第１ネジ軸と第２ネジ軸との回転を制御することにより，第１連結部材と第３連結部材とを，その間隔を変更するように移動させたり，間隔を変更せずに同時に移動させたりすることが可能である。このとき，第２連結部材と第４連結部材とは，それぞれ第１連結部材または第３連結部材と逆方向へ同様に移動される。一方，第１拡張部材は，第１リンク部材によって，第１連結部材と第３連結部材との間隔に応じて角度が変更される。同様に第２拡張部材は，第２リンク部材によって，第２連結部材と第４連結部材との間隔に応じて角度が変更される。つまり，第１ネジ軸と第２ネジ軸とを適宜回転させれば，第１拡張部材と第３拡張部材とを開閉したり，角度を保って移動させたりすることができるのである。
そこで，この第１拡張部材と第２拡張部材とを，その角度を変更させることにより，コアの両端面とコイルエンド部との間の空間に挿入させることができる。さらに，挿入させた状態からその角度を保って互いに離れる方向へ移動させることにより，コイルエンド部を両側へ引っ張って広げることができる。
【００１０】
具体的には，まず第１拡張部材と第２拡張部材を閉じた状態で，このコイル修正装置をコイルに相対させる（第１のステップ）。そして，第１ネジ軸を回転させて，第１連結部材が第３連結部材に近づき，同時に第２連結部材が第４連結部材に近づくように移動させる（第２のステップ）。これにより，第１拡張部材は，第１リンク部材を回動させて，その一端部が第３連結部材に近づけられる。そのため，他端部は第３連結部材から遠ざかるように開かれる。同様に第２拡張部材も開かれる。このとき，これらの拡張部材がコイルエンド部に挿入されるように，第１のステップにおける配置を設定しておく。次に，第２ネジ軸を回転させて，第３連結部材と第４連結部材とが互いに遠ざかる方向へ移動させる（第３のステップ）。これにより，第１拡張部材と第２拡張部材とが互いに遠ざかる方向に移動される。このとき，第１連結部材と第２連結部材とにそれぞれ，第３連結部材や第４連結部材と同じように移動させれば，第１拡張部材や第２拡張部材の開き角度は変更されない。
従って，このコイル修正装置によれば，コイルエンド部を両側同時に外側へ向けて引っ張るので，その後の成形作業に最適な配置とすることができる。すなわち，コアのスロットに挿入されたコイルの両側のコイルエンド部を容易に修正可能である。
【００１１】
本発明のコイル修正装置においてはまた，第１ネジ軸は，第１ネジ区間と第２ネジ区間との間隔が可変なものであり，第１ネジ区間は，第３連結部材に対して，軸方向にはともに移動し，軸周りには自在に回転できるように取り付けられており，第２ネジ区間は，第４連結部材に対して，軸方向にはともに移動し，軸周りには自在に回転できるように取り付けられていることが望ましい。
このようにすれば，第３のステップにおいて，第１ネジ軸を回転させる必要がない。すなわち，第１ネジ区間と第２ネジ区間との間隔を軸方向に変更させることによって，第１連結部材と第２連結部材とに，第３連結部材や第４連結部材と同じ動きをさせることが可能だからである。
【００１２】
あるいはまた，本発明のコイル修正装置においては，第１ネジ軸と第２ネジ軸との間で回転が伝達される状態と，回転が伝達されない状態とを切り替える回転伝達手段を有し，回転伝達手段は，伝達状態では，第１連結部材と第３連結部材とが同じ向きに移動するように回転を伝達することとしてもよい。
この場合，第２のステップでは，回転が伝達されない状態として第１ネジ軸を回転させればよい。そして，第３のステップでは，回転が伝達される状態とする。そうすれば，第１連結部材と第２連結部材とに，第３連結部材や第４連結部材と同じ動きをさせることが可能だからである。
【００１３】
さらに，本発明のコイル修正装置においては，第１連結部材と第３連結部材との接近および第２連結部材と第４連結部材との接近を規制する規制部材と，第１ネジ軸を回転操作する操作手段とを有することが望ましい。
このようにすれば，第１連結部材と第３連結部材とが接近しすぎたり，第２連結部材と第４連結部材とが接近しすぎることによる部材同士の衝突等が避けられる。また，操作手段によれば，第１ネジ軸の回転操作が容易に可能だからである。
【００１４】
さらに，本発明は，第１ネジ区間，および，これと逆向きの第２ネジ区間を有する第１ネジ軸と，第１ネジ区間と相対する第３ネジ区間，およびこれと逆向きであるとともに第２ネジ区間と相対する第４ネジ区間を有し，第１ネジ軸と平行に配置された第２ネジ軸と，第１ネジ区間に螺合するとともに第１ネジ軸の回転により軸方向に移動する第１連結部材と，第２ネジ区間に螺合するとともに第１ネジ軸の回転により軸方向に，かつ，第１連結部材の移動と逆向きに移動する第２連結部材と，第３ネジ区間に螺合するとともに第２ネジ軸の回転により軸方向に移動する第３連結部材と，第４ネジ区間に螺合するとともに第２ネジ軸の回転により軸方向に，かつ，第３連結部材の移動と逆向きに移動する第４連結部材と，第１連結部材に回動可能に取り付けられた第１拡張部材と，第２連結部材に回動可能に取り付けられた第２拡張部材と，第１拡張部材と第３連結部材とを結ぶ第１リンク部材と，第２拡張部材と第４連結部材とを結ぶ第２リンク部材とを有するコイル修正装置を用い，第３連結部材と第４連結部材とを接近させ，第１連結部材と第３連結部材とを離間させ，第２連結部材と第４連結部材とを離間させた状態で，第１拡張部材および第２拡張部材をコイルと対面させ，第１ネジ軸を回転させることにより，第１連結部材と第３連結部材とを接近させるとともに第２連結部材と第４連結部材とを接近させて，第１拡張部材および第２拡張部材をコイルに挿入し，第２ネジ軸を回転させることにより，第１連結部材と第３連結部材との間隔および第２連結部材と第４連結部材との間隔を維持しつつ，第３連結部材と第４連結部材とを離間させて，第１拡張部材および第２拡張部材によりコイルを軸方向に拡張させることを特徴とするコイル修正方法にも及ぶ。
【００１５】
さらに，本発明は，上記のコイル修正方法によって，モータに取り付けられたコイルを修正してモータを製造する方法にも及ぶ。
【００１６】
【発明の実施の形態】
「第１の実施の形態」
以下，本発明の第１の実施の形態について図面を参照にして詳細に説明する。本実施の形態のコイル修正装置は，ステータコア等のスロットに挿入された８個のコイルの形状を全極同時に修正するものである。
【００１７】
本実施の形態のコイル修正装置１では，図１と図２とに示すように，上下両端のガイド板１２，１２と，これらを結ぶガイドバー１１，１１とにより全体の骨格が構成されている。ここで，図２は図１のＡ−Ａ矢視図であり，図１は図２のＢ−Ｂ矢視図である。ガイド板１２，１２の間には，第１拡張部２０と，第２拡張部３０とが配置されている。ここでは，８個のコイルを同時に修正する装置としているので，第１拡張部２０では，図２に示されるように，第１連結部材２１に対し８つのコイル拡張爪１３，１３…が等配に配置され，それぞれリンク１４，１４…によって回動可能に取り付けられている。また，第２拡張部３０は，第１拡張部２０と上下対称に構成されている。すなわち，第２連結部材３１に対し８つのコイル拡張爪１５，１５…が等配に配置され，それぞれリンク１６，１６…によって回動可能に取り付けられている。このコイル拡張爪１３，１３…が第１拡張部材に相当し，コイル拡張爪１５，１５…が第２拡張部材に相当する。また，リンク１４，１４…が第１リンク部材に相当し，リンク１６，１６…が第２リンク部材に相当する。
【００１８】
また，コイル修正装置１には，図１に示すように，拡張ネジ軸１７と開閉ネジ軸１８とがともにガイドバー１１に平行に設けられている。拡張ネジ軸１７は，図中中央部分を除いた両側にネジが設けられ，図中上部には右ネジ部１７ａ，図中下部には左ネジ部１７ｂが形成されている。また，開閉ネジ軸１８には，図中上部に左ネジ部１８ａ，図中下部に右ネジ部１８ｂが形成されている。そして，左ネジ部１８ａと右ネジ部１８ｂとが，軸方向に溝が切られたスプライン軸１９によって連結されている。
【００１９】
スプライン軸１９の両端部には，スプライン軸１９の溝に合う突起を有して軸方向に摺動可能なボス２２，２３が設けられている。そして，左ネジ部１８ａはボス２２に，右ネジ部１８ｂはボス２３に，それぞれ取り付けられている。すなわち，開閉ネジ軸１８の左ネジ部１８ａと右ネジ部１８ｂとは，その間の距離は伸縮可能で，回転は伝達されるように連結されている。ここで，開閉ネジ軸１８が第１ネジ軸に相当し，左ネジ部１８ａと右ネジ部１８ｂとが第１ネジ区間，第２ネジ区間にそれぞれ相当する。また，拡張ネジ軸１７が第２ネジ軸に相当し，右ネジ部１７ａと左ネジ部１７ｂとが第３ネジ区間と第４ネジ区間とに相当する。
【００２０】
第１拡張部２０についてさらに説明する。コイル拡張爪１３，１３…は第１連結部材２１に，それぞれ回動可能に取り付けられている。第１連結部材２１には，図２に示されるように，拡張ネジ軸１７を自由に通過させる貫通孔２１ａと，開閉ネジ軸１８の左ネジ部１８ａとかみ合うネジ孔２１ｂとが設けられている。また，２本のガイドバー１１，１１をそれぞれ通過させる貫通孔２１ｃ，２１ｃも設けられている。
【００２１】
また，図１に示されるように，リンク１４，１４…の一端は，第３連結部材２４にそれぞれ回動可能に取り付けられている。リンク１４，１４…の他端は，コイル拡張爪１３，１３…のほぼ中央部に回動可能に取り付けられている。第３連結部材２４には，拡張ネジ軸１７の右ネジ部１７ａとかみ合うネジ孔２４ａと，開閉ネジ軸１８を通過させる貫通孔２４ｂとが設けられている。貫通孔２４ｂには接続部材２５が取り付けられ，接続部材２５を介してボス２２が固定されている。これにより，第３連結部材２４に対して開閉ネジ軸１８が自由に回転でき，かつ，第３連結部材２４が上下に移動すると左ネジ部１８ａもこれに伴って移動するようにされている。
【００２２】
次に，第２拡張部３０について説明する。第２拡張部３０は第１拡張部２０と上下対称に構成されている。すなわち，コイル拡張爪１５，１５…は第２連結部材３１にそれぞれ回動可能に取り付けられている。第２連結部材３１には，拡張ネジ軸１７を自由に通過させる貫通孔３１ａと，開閉ネジ軸１８の右ネジ部１８ｂにかみ合うネジ孔３１ｂとが設けられている。
【００２３】
また，図１に示されるように，リンク１６，１６…の一端は，第４連結部材３４にそれぞれ回動可能に取り付けられている。リンク１６，１６…の他端は，コイル拡張爪１５，１５…のほぼ中央部に回動可能に取り付けられている。第４連結部材３４には，拡張ネジ軸１７の左ネジ部１７ｂとかみ合うネジ孔３４ａと，開閉ネジ軸１８を通過させる貫通孔３４ｂとが設けられている。貫通孔３４ｂには接続部材３５が取り付けられ，接続部材３５を介してボス２３が固定されている。これにより，第４連結部材３４に対して開閉ネジ軸１８が自由に回転でき，かつ，第４連結部材３４が上下に移動すると右ネジ部１８ｂもこれに伴って移動するようにされている。
【００２４】
この構成から，ネジ孔２１ｂと左ネジ部１８ａとのかみ合いによって，開閉ネジ軸１８の回転は第１連結部材２１の上下動に変換される。同様に，開閉ネジ軸１８の回転は第２連結部材３１の上下動にも変換される。ただし，移動の向きは逆向きである。一方，第３連結部材２４と第４連結部材３４とは，拡張ネジ軸１７とかみ合い，拡張ネジ軸１７の回転によって上下動される。ただし，こちらも移動の向きは逆向きである。
【００２５】
次に，このコイル修正装置１の動作を説明する。ここでは，従来技術で説明したような，一般的なインサータによってコア１０１に挿入されたコイル１０３に対して本装置を適用する。すなわち，図１２に示す形状になったコイル１０３を修正対象として，コイル修正装置１によって形状を修正するのである。
【００２６】
まず，コイル修正装置１を図１に示した初期状態にする。そのために，第３連結部材２４と第４連結部材３４とを接近させ，第１連結部材２１と第３連結部材２４とを離間させ，第２連結部材３１と第４連結部材３４とを離間させた状態とする。これにより，コイル拡張爪１３，１３…とコイル拡張爪１５，１５…とは，拡張ネジ軸１７や開閉ネジ軸１８に対して平行に近い角度の閉じた状態となる。また，第３連結部材２４と第４連結部材３４との距離は，コア１０１の積層厚とほぼ等しくしておくとよい。この状態で，コイル１０３の入口側１０３ａが突出している側（図１２中上側）からコア１０１の中央孔にコイル修正装置１を差し込む。これにより，図３に示すように，出口側１０３ｂがコイル拡張爪１５，１５…に押されてやや外側へ広げられる。このとき，コア１０１の軸方向中央部にコイル修正装置１の軸方向中央部を合わせるように配置する。
【００２７】
次に，開閉ネジ軸１８を図中下から見て反時計回りに回転させる。拡張ネジ軸１７は回転させない。すると，第１拡張部２０では，第１連結部材２１は図中下方へ移動し，第３連結部材２４は移動しない。従って，図４に示すように，第１連結部材２１は第３連結部材２４に接近することとなる。そのため，リンク１４，１４…が回動し，コイル拡張爪１３，１３…が傘のように開く。これによって，コイル拡張爪１３，１３…は，開閉ネジ軸１８に対して垂直に近い角度となり，コイル１０３の入口側１０３ａのコイルエンド部に挿入される。同時に，第２拡張部３０では，第２連結部材３１が第４連結部材３４に接近するように移動し，コイル拡張爪１５，１５…が開く。これによって，コイル拡張爪１５，１５…は，コイル１０３の出口側１０３ｂのコイルエンド部に挿入される。
【００２８】
次に，開閉ネジ軸１８の回転を停止し，拡張ネジ軸１７を図中下から見て反時計回りに回転させる。すると，今度は第３連結部材２４が図中上方へ，第４連結部材３４が図中下方へ移動する。このとき，第３連結部材２４の移動とともにボス２２がスプライン軸１９の溝に沿って摺動し，図中上方へ移動する。これにより左ネジ部１８ａも，回転することなく上方へ移動する。このため第１連結部材２１も第３連結部材２４との間隔を維持しつつ上方へ移動する。すなわち，第１拡張部２０の全体が，コイル拡張爪１３，１３…の角度をそのままに保ちつつ上方へ移動する。同様にして第２拡張部３０も，コイル拡張爪１５，１５…の角度をそのままに保ちつつ下方へ移動する。従って，図５に示すように，コイル拡張爪１３，１３…およびコイル拡張爪１５，１５…は，その開き角度はそのままで互いの距離が離れるように移動する。
【００２９】
このようなコイル修正装置１の動作により，コイル１０３は，まず，内向きとなっていたコイルエンド部が入口側１０３ａと出口側１０３ｂとも外側へ向かって広げられ，次に，両側から同じように上下方向に引っ張られる。これにより，コイル１０３は，その両側が同形となり，巻き線のたるみやよじれのない最適な配置に修正される。元のコイル１０３はコア１０１の外径方向への成形に適する形状として，内径側の周長が外径側より長く形成されており，その形状に戻すように修正される。この後，拡張ネジ軸１７と開閉ネジ軸１８とをそれぞれ回転させ，コイル拡張爪１３，１３…とコイル拡張爪１５，１５…とをすぼめ，コイル修正装置１をコア１０１の間から取り出す。以上でコイル修正動作が終了する。
【００３０】
以上詳細に説明したように，本実施の形態のコイル修正装置１では，コイル１０３が巻かれたコア１０１の中央部にセットして，拡張ネジ軸１７と開閉ネジ軸１８とを順次回転させる。これによって，コイル拡張爪１３，１３…とコイル拡張爪１５，１５…とを同時に開き，互いに離れる方向へ移動させる。従って，コイル１０３の入口側１０３ａと出口側１０３ｂとのコイルエンド部を同時に同形状に修正できる。つまり，コイル１０３をこの後のコイル成形に最も適した配置とすることができる。
【００３１】
このとき，開閉ネジ軸１８が，左ネジ部１８ａと右ネジ部１８ｂとがスプライン軸１９によって連結されているので，拡張ネジ軸１７を回転させるだけで第３連結部材２４と第４連結部材３４とを互いに離れる方向へ移動させることができる。従って，コイル拡張爪１３，１３…とコイル拡張爪１５，１５…との開き角度を保って，互いに離れる方向に移動させることが容易となった。
【００３２】
「第２の実施の形態」
次に，本発明の第２の実施の形態について，図面を参照して詳細に説明する。この実施の形態のコイル修正装置２は，図６に示すように，伝達機構部４０を有し，スプライン軸１９を有していない。そのため，この実施の形態の開閉ネジ軸１８は，第１の実施の形態の開閉ネジ軸１８のように左ネジ部１８ａと右ネジ部１８ｂとの間隔を変更することはできない。そして，拡張ネジ軸１７と開閉ネジ軸１８とがともに，それぞれ中央でネジの向きの変化したネジ軸となっている。なお，図６では，ガイドバー１１やガイド板１２は省略しており，図１と比較して拡張ネジ軸１７と開閉ネジ軸１８との配置が左右逆になっている。それ以外の部分は第１の実施の形態のコイル修正装置１とほぼ同様であり，同じ符号を付して説明を省略する。また以下のコイル修正装置２についての説明では，上方・下方等の位置や方向の表現は全て，図６中の方向に合わせて記載する。
【００３３】
伝達機構部４０には，ハンドル４１とその回転軸に固定されたかさ歯車４２と開閉ネジ軸１８に固定されたかさ歯車４３とが備えられている。かさ歯車４２とかさ歯車４３とはそれらの回転軸が互いに９０度の角度をなしてかみ合わされている。このハンドル４１が操作手段に相当する。伝達機構部４０にはさらに，開閉ネジ軸１８に固定された平歯車４４と，拡張ネジ軸１７の外周に配置された平歯車４５と，平歯車４５の上方に配置されたつまみ４６と，つまみ４６を係止するための係止部材４７とが備えられている。そして，これらが支持板４８によって支持されて，伝達機構部４０が構成されている。
【００３４】
平歯車４４は，開閉ネジ軸１８の回転を平歯車４５に伝達するためのものである。平歯車４５は，平歯車４４と同径同歯数の歯車であり，平歯車４４とかみ合って逆向きに同速度で回転する。つまみ４６は，上下に移動させることにより，平歯車４５と拡張ネジ軸１７とを連動させたり切り離したりするためのものである。図６に示したのは，つまみ４６を押し下げて平歯車４５と拡張ネジ軸１７とを連動させた状態である。つまみ４６を引き上げた状態では，図７に示すように，つまみ４６は係止部材４７によって係止されるとともに，平歯車４５と切り離される。
【００３５】
つまみ４６の下面には複数の突起４６ａ，４６ａが設けられ，平歯車４５の上面には複数の凹部４５ａ，４５ａが設けられている。これらは，つまみ４６を下げることによって，図６に示すように，突起４６ａが凹部４５ａに入り込むようになっている。これによって，平歯車４５の回転がつまみ４６を介して拡張ネジ軸１７に伝達される。そして，この状態では開閉ネジ軸１８と拡張ネジ軸１７とは逆向きに同速度で回転する。ここで，平歯車４４と平歯車４５とつまみ４６によって構成される部分が回転伝達手段に相当する。
【００３６】
このほかにこのコイル修正装置２では，第４連結部材３４に固定されたストッパ５１と，第２連結部材３１に固定されたあて板５２を有している。これらは，第２連結部材３１と第４連結部材３４とが所定の距離まで近づいたときに，ストッパ５１があて板５２に当接するようにその長さや位置が設定されている。このストッパ５１およびあて板５２が規制部材に相当する。
【００３７】
さらに，このコイル修正装置２は，図８に示すように，支持板４８がその上方からガイドバー６１，６１とガイド板６２によってつり下げられて使用される。さらに，ガイド板６２を貫通して移動軸６３が設けられ，ガイド板６２は，移動軸６３に沿って上下方向に移動可能にされている。移動軸６３の所定の箇所には移動ストッパ６４が取り付けられ，ガイド板６２のそれより下方への移動が規制されている。また，修正対象であるコイル１０３が巻かれたコア１０１を支持するための，ワーク支持部材６５が設けられている。そして，移動軸６３，移動ストッパ６４，ワーク支持部材６５のそれぞれは，基台６６によって支持されて，互いの位置関係が保持されている。すなわち，ガイド板６２を移動ストッパ６４に当接する位置まで下降させたとき，第１拡張部２０と第２拡張部３０との中央がコア１０１の軸方向中央部に配置されるようになっている。
【００３８】
次に，このコイル修正装置２の動作を説明する。まず，ワーク支持部材６５にワークとなるコア１０１をセットする。そして，第１拡張部２０と第２拡張部３０とをコイル拡張爪１３，１３…やコイル拡張爪１５，１５…が閉じた状態である初期状態にする。この状態でガイド板６２を下降させ，移動ストッパ６４に当接させる。これにより，コア１０１の軸方向中央部に第１拡張部２０と第２拡張部３０との中央が配置される。このとき，第３連結部材２４と第４連結部材３４との間の距離は，ほぼコア１０１の積層圧と同等に設定しておくとよい。
【００３９】
次に，つまみ４６を操作して平歯車４５と拡張ネジ軸１７とを切り離し，平歯車４５の回転が拡張ネジ軸１７に伝達されないようにしておく（図７参照）。この状態でハンドル４１を反時計方向に回転させる。このハンドル４１の回転は，かさ歯車４２，４３を介して開閉ネジ軸１８の回転として伝達される。これにより，第１連結部材２１が下方へ，第２連結部材３１が上方へ移動する。第３連結部材２４と第４連結部材３４とは拡張ネジ軸１７とかみ合っており，拡張ネジ軸１７は回転していないので移動しない。従って，コイル拡張爪１３，１３…とコイル拡張爪１５，１５…とが開かれ，コアの両端面とコイルエンド部との間に挿入される。そして，第２連結部材３１の移動により，第２連結部材３１と第４連結部材３４とが所定の距離まで近づくと，ストッパ５１があて板５２に当接するので，ハンドル４１の回転を停止する。
【００４０】
次に，つまみ４６を操作して平歯車４５の回転が拡張ネジ軸１７に伝達されるようにする（図６参照）。この状態では，ハンドル４１の回転はかさ歯車４２，４３を介して開閉ネジ軸１８の回転として伝達されるとともに，平歯車４４，４５を介して拡張ネジ軸１７の回転としても同時に伝達される。このとき，拡張ネジ軸１７は，開閉ネジ軸１８とは逆方向に同速度で回転する。そこで，この状態でハンドル４１を時計方向に回転させる。
【００４１】
すると，開閉ネジ軸１８は先と逆の回転となるので，第１連結部材２１が上方へ第２連結部材３１が下方へ移動する。そして同時に，拡張ネジ軸１７が開閉ネジ軸１８の逆回転をするが，拡張ネジ軸１７には開閉ネジ軸１８とは逆向きのネジが形成されている。そのため，第３連結部材２４は，第１連結部材２１と同方向である上方へ移動する。同時に，第４連結部材３４は，第２連結部材３１と同方向である下方へ移動する。拡張ネジ軸１７と開閉ネジ軸１８とは，同速度で回転するので，第１連結部材２１と第３連結部材２４，あるいは第２連結部材３１と第４連結部材３４とは同方向へ同速度で移動することとなる。すなわち，コイル拡張爪１３，１３…とコイル拡張爪１５，１５…とは，ともに開いた状態を保って互いに離れる方向へ移動する。従って，第１の実施の形態のコイル修正装置１と同様に，コイル１０３のコイルエンド部を上下両方向に同時に引っ張ることにより，その形状を修正することができる。
【００４２】
以上詳細に説明したように，本実施の形態のコイル修正装置２によれば，ハンドル４１とつまみ４６との操作によって，コイル拡張爪１３，１３…とコイル拡張爪１５，１５…とを開き，コイル拡張させることができる。従って，容易にコイル１０３のコイルエンド部を修正することができる。
【００４３】
また，この実施の形態では，開閉ネジ軸１８と拡張ネジ軸１７との回転の伝達は，つまみ４６の上下によって切り換えられるので，伝達状態と非伝達状態との切換は容易である。従って，まず開閉ネジ軸１８のみを回転させて，後に開閉ネジ軸１８と拡張ネジ軸１７とをともに回転させることにより，容易にコイル１０３の修正ができる。
また，この実施の形態では，ストッパ５１とあて板５２とを設けたので，第２連結部材３１と第４連結部材３４とが接近しすぎることが防止されている。従って，コイル拡張爪１３，１３…とコイル拡張爪１５，１５…とを最適な角度まで開くことが容易となった。
【００４４】
「第３の実施の形態」
次に，上記コイル修正装置１（第１の実施の形態）または上記コイル修正装置２（第２の実施の形態）を使用したモータの製造方法について説明する。この実施の形態のモータの製造方法は，次の３工程を有している。（第１の工程）一般的なインサータによる挿入工程，（第２の工程）上記のコイル修正装置１またはコイル修正装置２による修正工程，（第３の工程）一般的な拡張装置による拡張工程の３工程である。
【００４５】
ここで用いられるコイル１０３は，コア１０１の内径側に配置される部分の周長が外径側より長く形成された四角錐台形のものである。このコイル１０３は，予め各部の周長が以下のように形成されている。コア１０１の外径側に配置される周長の短い部分では，コア１０１の極歯の周長よりやや長い程度とする。また，コア１０１の内径側に配置される周長の長い部分では，これにスロット１０２の深さの４倍を加えた程度とする。さらに中間部では，その周長がなだらかに変化するようにする。
【００４６】
このモータの製造方法では，このように形成されたコイル１０３に対して，まず第１の挿入工程を行う。すなわち，一般的なインサータによってコイル１０３をコア１０１のスロット１０２に挿入する。その結果，スロット１０２に挿入されたコイル１０３は，先に述べたように挿入入口側と挿入出口側とではコイルエンド部の形状が異なるものとなる。
【００４７】
次に第２の修正工程を行う。すなわち，コイル修正装置１またはコイル修正装置２によって，挿入入口側と挿入出口側のコイルエンド部の修正を行う。これにより，両側のコイルエンド部はともに同形状となり，たるみやよじれのない形状に修正される。これにより，次工程の拡張工程が容易となるのである。
【００４８】
次に，第３の拡張工程を行う。すなわち，修正工程によって修正されたコイルエンド部を，一般的な拡張装置によって拡張する。一般的な拡張装置によれば，コイルエンド部はコア１０１の外径側へ押し出され，そのまま外側へ倒れるように拡張される。この結果，以上の３工程が終了した後のコイルエンド部の形状は，図９のようになる。なおここでは，コア１０１の片側のコイルエンド部のみを示しているが，修正工程が実行されることにより両側のコイルエンド部は同形状になっている。
【００４９】
従来の製造方法では，修正工程がなく，挿入工程後そのまま拡張工程が実施されていた。この場合，挿入入口側と挿入出口側とでコイルエンド部の形状が異なる状態のままで拡張される。そのため，拡張工程において，すべての部分のコイルエンド部をスロット１０２より外側に拡張できるようにするためには，最も短く挿入される部分を考慮して，コイルエンド部の長さにある程度の余裕を持たせる必要があった。従って，図９に示したような，線長に無駄のないちょうどよい長さのコイル１０３を使用することはできなかった。これに対し，挿入工程の後に修正工程を加えることで，ちょうどよい長さのコイル１０３を活用できるようになった。
【００５０】
一方，全周長が等しい直方体形のコイル１０３を使用した場合は，次のようになる。このようなコイル１０３をスロット１０２に挿入し，コイル修正装置１またはコイル修正装置２でコイルエンド部の修正をした後，一般的な拡張装置でコイルエンド部の拡張をした場合のコイルエンド部の形状は，一般に図１０のようになる。すなわち，コイルエンド部のうち，コア１０１の内径側に配置された部分と外径側に配置された部分との長さがほぼ等しいので，内径側部１０３ｃの経路が最短距離となるように中央部分を折り返すのである。この方法では，この折り曲げられた部分の巻線同士は互いに擦れ合い，皮膜に傷が付く等のおそれがある。このため，絶縁確保や，コイルエンド部の小型化等の点で問題があった。
【００５１】
従って，四角錐台形のコイル１０３を使用して，このモータの製造方法で製造すれば，コイル１０３を折り返す必要がないので拡張が容易であり，拡張工程においてもコイル１０３の巻線の皮膜に傷が付く等のおそれがない。さらに，コイル１０３に使用する巻線長を削減することができる。従って，巻線の使用量を減少させ，コンパクトで無駄のないモータコアを製造することが可能となった。
【００５２】
以上詳細に説明したように，本実施の形態のモータの製造方法によれば，コイル１０３は，モータのコアに挿入された後にコイル修正装置１またはコイル修正装置２によってコイルエンド部の形状が修正される。従って，予めちょうどよい長さに形成されたコイル１０３を使用することができる。これにより，コイルの巻線の使用量を削減できた。また，次工程の拡張工程が容易となり，巻線の皮膜に傷が付くおそれもないモータの製造方法となった。
【００５３】
なお，本実施の形態は単なる例示にすぎず，本発明を何ら限定するものではない。したがって本発明は当然に，その要旨を逸脱しない範囲内で種々の改良，変形が可能である。
例えば，コイル拡張爪１３，１３…やコイル拡張爪１５，１５…の爪の数はこれに限るものでなく，対象となるステータ等のコイル数に合わせて構成すればよい。
また例えば，拡張ネジ軸１７，開閉ネジ軸１８等のネジの向きは，これに限るものではない。コイル拡張爪１３，１３…やコイル拡張爪１５，１５…に上記のような動作をさせることができればよく，例えば全てのネジの向きを逆にして操作回転方向を逆にしてもよい。あるいは，拡張ネジ軸１７と開閉ネジ軸１８とが同じ方向のネジ軸でも可能である。上記第２の実施の形態においてこのようにする場合には，平歯車４４と平歯車４５との間に別の歯車を設けるか，平歯車４４と平歯車４５とを歯付ベルトまたはチェーンで連結すればよい。
【００５４】
【発明の効果】
以上の説明から明らかなように本発明によれば，コアのスロットに挿入されたコイルの両側のコイルエンド部を容易に修正可能なコイル修正装置およびコイル修正方法およびモータの製造方法が提供されている。
【図面の簡単な説明】
【図１】第１の実施の形態に係るコイル修正装置の正面断面図である。
【図２】第１の実施の形態に係るコイル修正装置の平面断面図である。
【図３】コイル拡張の手順を示す説明図である。
【図４】コイル拡張の手順を示す説明図である。
【図５】コイル拡張の手順を示す説明図である。
【図６】第２の実施の形態に係るコイル修正装置の正面断面図である。
【図７】拡張ネジ軸と開閉ネジ軸との連動を切り離した状態を示す説明図である。
【図８】第２の実施の形態に係るコイル修正装置の使用方法を示す説明図である。
【図９】四角錐台形のコイルを使用したコイルエンド部の形状を示す説明図である。
【図１０】直方体形のコイルを使用したコイルエンド部の形状を示す説明図である。
【図１１】挿入後のコイルの状態を示す説明図である。
【図１２】挿入後のコイルの状態を示す断面図である。
【図１３】従来のインサータを示す断面図である。
【符号の説明】
１，２ コイル修正装置
１３，１５ コイル拡張爪（第１，第２拡張部材）
１４，１６ リンク（第１，第２リンク部材）
１７ 拡張ネジ軸（第２ネジ軸）
１７ａ 右ネジ部（第３ネジ区間）
１７ｂ 左ネジ部（第４ネジ区間）
１８ 開閉ネジ軸（第１ネジ軸）
１８ａ 左ネジ部（第１ネジ区間）
１８ｂ 右ネジ部（第２ネジ区間）
２１ 第１連結部材
２４ 第３連結部材
３１ 第２連結部材
３４ 第４連結部材
４４ 平歯車（回転伝達手段）
４５ 平歯車（回転伝達手段）
４６ つまみ（回転伝達手段）
４１ ハンドル（操作手段）
５１ ストッパ（規制部材）
５２ あて板（規制部材）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coil correcting device, a coil correcting method, and a motor manufacturing method for correcting the shape of a coil inserted into a slot of a core. More specifically, the present invention relates to a coil correction device, a coil correction method, and a motor manufacturing method that simultaneously correct coil end portions on both the inlet side and the outlet side of a slot.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, a motor stator is formed by attaching a plurality of coils to a laminated core or a cylindrical core in which substantially annular silicon steel plates are stacked. As shown in FIG. 11, the core 101 has a plurality of axial grooves (slots 102) formed on the inner peripheral side, and the coil 103 wound in advance is pushed into the slot 102. The pushed coil 103 has loop-like coil end portions 103 a and 103 b protruding from both end faces of the core 101. This figure shows a state in which the coil 103 is pushed from the upper side of the core 101 in the figure by a general inserter. The coil end portion needs to be bent to the outer diameter side of the slot 102 so as not to interfere with the next process and formed into a compact shape as much as possible. Therefore, various coil forming apparatuses for forming the coil end portion have been proposed (see, for example, Patent Document 1 and Patent Document 2).
[0003]
However, the coil end portion of the inserted coil 103 has different shapes on the insertion inlet side 103a (upper side in the figure) and the insertion outlet side 103b (lower side in the figure). As shown in the sectional view of FIG. 12, in general, the inner diameter length LA of the inlet side 103a has a relatively large margin, whereas the inner diameter length LB of the outlet side 103b becomes shorter. Therefore, particularly on the outlet side 103b, a large load is required for forming the coil 103, and the coating may be damaged. Also, it is not preferable to use a coil wound in advance so that the inner diameter length LB of the outlet side 103b is sufficiently long, because the amount of conductive wire used increases.
[0004]
On the other hand, as shown in FIG. 13, an inserter in which the peripheral length of the outlet-side inner diameter portion 111 of the coil 110 after insertion is sufficient by the coil 110 wound in a square pyramid shape with an appropriate size. 112 has been devised (see Patent Document 3). According to the inserter 112, the coil 110 sandwiched between the blades 113 is pushed up in the axial direction by the first push-up mechanism 114 while maintaining its tip shape. Thereafter, the outlet-side inner diameter portion 111 of the coil 110 is pushed up in the outer diameter direction by the second push-up mechanism 115. In FIG. 13, an inserter 112 is shown that pushes up the coil 110 from the bottom to the top of the core.
[0005]
[Patent Document 1]
Japanese Unexamined Patent Publication No. 63-59751 (Fig. 1-4)
[Patent Document 2]
JP-A-7-184359 (FIG. 1)
[Patent Document 3]
JP 2002-125340 A (pages 6-9, FIG. 20)
[0006]
[Problems to be solved by the invention]
However, in the conventional technique described above, the inlet side of the coil 110 is not modified. Since the outlet side and the inlet side are continuous wires, the shape of the other may change by correcting one of them. Therefore, it is desirable that both coil end portions can be corrected simultaneously. In addition, there has been a demand for a coil correction method that can be easily performed without wasting existing inserters.
[0007]
The present invention has been made to solve the problems of the conventional coil correction method described above. That is, an object of the present invention is to provide a coil correcting device, a coil correcting method, and a motor manufacturing method capable of easily correcting the coil end portions on both sides of the coil inserted into the core slot.
[0008]
[Means for Solving the Problems]
The coil correction device of the present invention made for the purpose of solving this problem includes a first screw section, a first screw shaft having a second screw section opposite to the first screw section, and a third screw section facing the first screw section. A second screw shaft having a screw section and a fourth screw section opposite to the second screw section and facing the second screw section, and screwed into the first screw section. And a first connecting member that moves in the axial direction by the rotation of the first screw shaft, and an axial direction by the rotation of the first screw shaft that is screwed into the second screw section and opposite to the movement of the first connecting member. The second connecting member that moves to the third screw section and the third connecting member that moves in the axial direction by the rotation of the second screw shaft, and the second connecting member that screwes to the fourth screw section and the second screw shaft. Rotate in the axial direction and in the opposite direction to the movement of the third connecting member A moving fourth connecting member; a first expansion member rotatably attached to the first connection member; a second expansion member rotatably attached to the second connection member; a first expansion member; The first link member that connects the three connecting members, and the second link member that connects the second expansion member and the fourth connecting member.
[0009]
That is, in the present invention, the first connecting member and the second connecting member are moved in opposite directions by the rotation of the first screw shaft. Further, the third connecting member and the fourth connecting member are moved in opposite directions by the rotation of the second screw shaft. That is, by controlling the rotation of the first screw shaft and the second screw shaft, the first connecting member and the third connecting member can be moved so as to change the interval or simultaneously without changing the interval. It is possible to move. At this time, the second connecting member and the fourth connecting member are similarly moved in the opposite direction to the first connecting member or the third connecting member, respectively. On the other hand, the angle of the first expansion member is changed by the first link member according to the interval between the first connection member and the third connection member. Similarly, the angle of the second expansion member is changed by the second link member in accordance with the interval between the second connection member and the fourth connection member. That is, if the first screw shaft and the second screw shaft are appropriately rotated, the first expansion member and the third expansion member can be opened and closed or moved while maintaining an angle.
Therefore, the first expansion member and the second expansion member can be inserted into the space between the both end faces of the core and the coil end portion by changing the angle thereof. Furthermore, the coil end portion can be extended by pulling it to both sides by moving it away from the inserted state while maintaining its angle.
[0010]
Specifically, first, the coil correcting device is made to face the coil with the first expansion member and the second expansion member closed (first step). Then, the first screw shaft is rotated to move the first connecting member closer to the third connecting member and simultaneously move the second connecting member closer to the fourth connecting member (second step). As a result, the first expansion member rotates the first link member so that one end thereof is brought close to the third connecting member. Therefore, the other end is opened away from the third connecting member. Similarly, the second expansion member is opened. At this time, the arrangement in the first step is set so that these expansion members are inserted into the coil end portions. Next, the second screw shaft is rotated to move the third connecting member and the fourth connecting member away from each other (third step). As a result, the first expansion member and the second expansion member are moved away from each other. At this time, if the first connecting member and the second connecting member are moved in the same manner as the third connecting member and the fourth connecting member, the opening angles of the first expanding member and the second expanding member are not changed.
Therefore, according to this coil correction device, the coil end portion is pulled outward at the same time on both sides, so that it can be optimally arranged for the subsequent molding operation. That is, the coil end portions on both sides of the coil inserted in the core slot can be easily corrected.
[0011]
In the coil correcting device according to the present invention, the first screw shaft has a variable interval between the first screw section and the second screw section, and the first screw section is a shaft relative to the third connecting member. The second screw section moves together in the axial direction with respect to the fourth connecting member, and freely moves around the axis. It is desirable to be mounted so that it can rotate.
In this way, it is not necessary to rotate the first screw shaft in the third step. That is, by changing the interval between the first screw section and the second screw section in the axial direction, the first connecting member and the second connecting member are caused to perform the same movement as the third connecting member and the fourth connecting member. Because it is possible.
[0012]
Alternatively, the coil correction device of the present invention has a rotation transmission means for switching between a state in which rotation is transmitted between the first screw shaft and the second screw shaft and a state in which rotation is not transmitted. In the transmission state, the means may transmit the rotation so that the first connecting member and the third connecting member move in the same direction.
In this case, in the second step, the first screw shaft may be rotated in a state where the rotation is not transmitted. In the third step, the rotation is transmitted. This is because it is possible to cause the first connecting member and the second connecting member to perform the same movement as the third connecting member and the fourth connecting member.
[0013]
Further, in the coil correction device of the present invention, the regulating member that regulates the approach between the first connecting member and the third connecting member and the approach between the second connecting member and the fourth connecting member, and the first screw shaft are rotated. It is desirable to have an operating means to do.
If it does in this way, the collision etc. of the members by the 1st connection member and the 3rd connection member approaching too much, or the 2nd connection member and the 4th connection member approaching too much are avoided. Further, according to the operation means, the rotation operation of the first screw shaft can be easily performed.
[0014]
Furthermore, the present invention has a first screw section, a first screw shaft having a second screw section opposite to the first screw section, a third screw section facing the first screw section, and a direction opposite thereto. A fourth screw section opposite to the second screw section; a second screw shaft disposed parallel to the first screw shaft; and screwed into the first screw section and axially rotated by rotation of the first screw shaft A first connecting member that moves, a second connecting member that is screwed into the second screw section, moves in the axial direction by rotation of the first screw shaft, and moves in the direction opposite to the movement of the first connecting member; A third connecting member that is screwed into the screw section and moved in the axial direction by rotation of the second screw shaft; and a third connecting member that is screwed into the fourth screw section and rotated in the axial direction by rotation of the second screw shaft. The fourth connecting member that moves in the opposite direction to the movement of the member, and the first connecting member rotates. A first expansion member attached to the second connection member, a second expansion member rotatably attached to the second connection member, a first link member connecting the first expansion member and the third connection member, and a second expansion member Using a coil correction device having a second link member connecting the member and the fourth connecting member, bringing the third connecting member and the fourth connecting member closer, separating the first connecting member and the third connecting member, In a state where the second connecting member and the fourth connecting member are separated from each other, the first extending member and the second extending member are opposed to the coil, and the first screw shaft is rotated so that the first connecting member and the third connecting member are rotated. The first connecting member is moved by causing the second connecting member and the fourth connecting member to approach each other, inserting the first expansion member and the second expansion member into the coil, and rotating the second screw shaft. And the third connecting member and the second connecting member and the fourth connecting member A coil correction method characterized in that the third connecting member and the fourth connecting member are separated from each other while maintaining a distance from the member, and the coil is expanded in the axial direction by the first and second extending members. It also extends.
[0015]
Furthermore, the present invention extends to a method of manufacturing a motor by correcting a coil attached to the motor by the above-described coil correction method.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
“First Embodiment”
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. The coil correction apparatus according to the present embodiment corrects the shape of eight coils inserted into slots such as a stator core all at the same time.
[0017]
In the coil correction apparatus 1 of the present embodiment, as shown in FIGS. 1 and 2, the entire skeleton is constituted by the upper and lower guide plates 12, 12 and the guide bars 11, 11 connecting them. . Here, FIG. 2 is an AA arrow view of FIG. 1, and FIG. 1 is an BB arrow view of FIG. Between the guide plates 12 and 12, a first extension portion 20 and a second extension portion 30 are arranged. Here, since it is a device that simultaneously corrects eight coils, as shown in FIG. 2, eight coil expansion claws 13, 13... Are rotatably attached by links 14, 14,..., Respectively. Further, the second extension part 30 is configured to be vertically symmetrical with the first extension part 20. That is, eight coil expansion claws 15, 15... Are arranged at equal intervals with respect to the second connecting member 31, and are rotatably attached by links 16, 16,. The coil expansion claws 13, 13 ... correspond to the first expansion member, and the coil expansion claws 15, 15 ... correspond to the second expansion member. In addition, the links 14, 14... Correspond to the first link member, and the links 16, 16.
[0018]
In addition, as shown in FIG. 1, the coil correction device 1 is provided with an expansion screw shaft 17 and an opening / closing screw shaft 18 in parallel to the guide bar 11. The extension screw shaft 17 is provided with screws on both sides except for the central portion in the drawing, and a right screw portion 17a is formed in the upper portion in the drawing, and a left screw portion 17b is formed in the lower portion in the drawing. Further, the open / close screw shaft 18 is formed with a left screw portion 18a at the upper portion in the drawing and a right screw portion 18b at the lower portion in the drawing. The left screw portion 18a and the right screw portion 18b are connected by a spline shaft 19 having a groove cut in the axial direction.
[0019]
At both ends of the spline shaft 19, bosses 22 and 23 having protrusions that fit into the grooves of the spline shaft 19 and slidable in the axial direction are provided. The left screw portion 18a is attached to the boss 22 and the right screw portion 18b is attached to the boss 23, respectively. That is, the left screw portion 18a and the right screw portion 18b of the open / close screw shaft 18 are connected so that the distance between them can be expanded and contracted and the rotation is transmitted. Here, the open / close screw shaft 18 corresponds to a first screw shaft, and the left screw portion 18a and the right screw portion 18b correspond to a first screw section and a second screw section, respectively. The extension screw shaft 17 corresponds to a second screw shaft, and the right screw portion 17a and the left screw portion 17b correspond to a third screw section and a fourth screw section.
[0020]
The first extension unit 20 will be further described. The coil expansion claws 13, 13... Are attached to the first connecting member 21 so as to be rotatable. As shown in FIG. 2, the first connecting member 21 is provided with a through hole 21 a that allows the expansion screw shaft 17 to freely pass therethrough and a screw hole 21 b that meshes with the left screw portion 18 a of the opening and closing screw shaft 18. . In addition, through holes 21c and 21c through which the two guide bars 11 and 11 pass, respectively, are also provided.
[0021]
Further, as shown in FIG. 1, one end of each of the links 14, 14... Is rotatably attached to the third connecting member 24. The other ends of the links 14, 14... Are rotatably attached to substantially the center portions of the coil expansion claws 13, 13. The third connecting member 24 is provided with a screw hole 24 a that engages with the right screw portion 17 a of the expansion screw shaft 17 and a through hole 24 b that allows the opening and closing screw shaft 18 to pass therethrough. A connecting member 25 is attached to the through hole 24b, and the boss 22 is fixed via the connecting member 25. As a result, the open / close screw shaft 18 can freely rotate with respect to the third connecting member 24, and when the third connecting member 24 moves up and down, the left screw portion 18a also moves accordingly.
[0022]
Next, the second extension unit 30 will be described. The second extension part 30 is configured to be vertically symmetrical with the first extension part 20. That is, the coil expansion claws 15, 15... Are rotatably attached to the second connecting member 31, respectively. The second connecting member 31 is provided with a through hole 31 a through which the expansion screw shaft 17 can freely pass and a screw hole 31 b that engages with the right screw portion 18 b of the opening and closing screw shaft 18.
[0023]
Further, as shown in FIG. 1, one end of each of the links 16, 16... Is rotatably attached to the fourth connecting member 34. The other ends of the links 16, 16... Are rotatably attached to substantially the center portions of the coil expansion claws 15, 15. The fourth connecting member 34 is provided with a screw hole 34 a that engages with the left screw portion 17 b of the expansion screw shaft 17 and a through hole 34 b that allows the opening and closing screw shaft 18 to pass therethrough. A connecting member 35 is attached to the through hole 34b, and the boss 23 is fixed via the connecting member 35. As a result, the open / close screw shaft 18 can freely rotate with respect to the fourth connecting member 34, and when the fourth connecting member 34 moves up and down, the right screw portion 18 b also moves accordingly.
[0024]
With this configuration, the rotation of the opening / closing screw shaft 18 is converted into the vertical movement of the first connecting member 21 by the engagement between the screw hole 21b and the left screw portion 18a. Similarly, the rotation of the opening / closing screw shaft 18 is also converted into the vertical movement of the second connecting member 31. However, the direction of movement is opposite. On the other hand, the third connecting member 24 and the fourth connecting member 34 mesh with the expansion screw shaft 17 and are moved up and down by the rotation of the expansion screw shaft 17. However, the direction of movement is also reversed.
[0025]
Next, operation | movement of this coil correction apparatus 1 is demonstrated. Here, the present apparatus is applied to the coil 103 inserted into the core 101 by a general inserter as described in the prior art. That is, the coil correcting device 1 corrects the shape with the coil 103 having the shape shown in FIG.
[0026]
First, the coil correction device 1 is set to the initial state shown in FIG. For this purpose, the third connecting member 24 and the fourth connecting member 34 are brought close to each other, the first connecting member 21 and the third connecting member 24 are separated, and the second connecting member 31 and the fourth connecting member 34 are separated. State. As a result, the coil expansion claws 13, 13... And the coil expansion claws 15, 15... Are closed at an angle close to parallel to the expansion screw shaft 17 and the opening / closing screw shaft 18. In addition, the distance between the third connecting member 24 and the fourth connecting member 34 is preferably substantially equal to the laminated thickness of the core 101. In this state, the coil correcting device 1 is inserted into the central hole of the core 101 from the side where the inlet side 103a of the coil 103 projects (upper side in FIG. 12). Thereby, as shown in FIG. 3, the exit side 103b is pushed by the coil expansion claws 15, 15,. At this time, it arrange | positions so that the axial direction center part of the coil correction apparatus 1 may match with the axial direction center part of the core 101. FIG.
[0027]
Next, the open / close screw shaft 18 is rotated counterclockwise as viewed from the bottom in the figure. The extension screw shaft 17 is not rotated. Then, in the 1st expansion part 20, the 1st connection member 21 moves below in the figure, and the 3rd connection member 24 does not move. Therefore, as shown in FIG. 4, the first connecting member 21 approaches the third connecting member 24. Therefore, the links 14, 14... Rotate, and the coil expansion claws 13, 13. As a result, the coil expansion claws 13, 13... Have an angle close to perpendicular to the opening / closing screw shaft 18 and are inserted into the coil end portion on the inlet side 103 a of the coil 103. At the same time, in the second expansion portion 30, the second connecting member 31 moves so as to approach the fourth connecting member 34, and the coil expansion claws 15, 15,. As a result, the coil expansion claws 15, 15... Are inserted into the coil end portion on the outlet side 103 b of the coil 103.
[0028]
Next, the rotation of the open / close screw shaft 18 is stopped, and the expansion screw shaft 17 is rotated counterclockwise as viewed from the bottom in the figure. Then, this time, the third connecting member 24 moves upward in the figure, and the fourth connecting member 34 moves downward in the figure. At this time, as the third connecting member 24 moves, the boss 22 slides along the groove of the spline shaft 19 and moves upward in the figure. As a result, the left screw portion 18a also moves upward without rotating. For this reason, the 1st connection member 21 also moves upwards, maintaining the space | interval with the 3rd connection member 24. FIG. That is, the entire first extension portion 20 moves upward while keeping the angle of the coil extension claws 13, 13. Similarly, the second expansion portion 30 also moves downward while keeping the angle of the coil expansion claws 15, 15. Therefore, as shown in FIG. 5, the coil extension claws 13, 13... And the coil extension claws 15, 15.
[0029]
As a result of the operation of the coil correcting device 1, the coil 103 first has its inward coil end portion widened outward on both the inlet side 103a and the outlet side 103b, and then in the same manner from both sides. Pulled up and down. As a result, the coil 103 has the same shape on both sides, and the coil 103 is corrected to an optimum arrangement without sagging or kinking of the winding. The original coil 103 has a shape suitable for forming the core 101 in the outer diameter direction, and the inner diameter side is longer than the outer diameter side, and is corrected to return to that shape. Thereafter, the extension screw shaft 17 and the open / close screw shaft 18 are rotated, respectively, to retract the coil extension claws 13, 13... And the coil extension claws 15, 15. The coil correction operation is thus completed.
[0030]
As described above in detail, in the coil correction device 1 according to the present embodiment, the expansion screw shaft 17 and the open / close screw shaft 18 are sequentially rotated by being set at the center of the core 101 around which the coil 103 is wound. .. And the coil expansion claws 15, 15... Are simultaneously opened and moved away from each other. Accordingly, the coil end portions on the inlet side 103a and the outlet side 103b of the coil 103 can be simultaneously corrected to the same shape. That is, the coil 103 can be arranged most suitable for subsequent coil forming.
[0031]
At this time, since the open / close screw shaft 18 is connected to the left screw portion 18a and the right screw portion 18b by the spline shaft 19, the third connecting member 24 and the fourth connecting member 34 are simply rotated by the expansion screw shaft 17. Can be moved away from each other. Therefore, it becomes easy to move the coil extension claws 13, 13... And the coil extension claws 15, 15,.
[0032]
“Second Embodiment”
Next, a second embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 6, the coil correction device 2 according to this embodiment includes a transmission mechanism 40 and does not include the spline shaft 19. Therefore, the opening / closing screw shaft 18 of this embodiment cannot change the space | interval of the left screw part 18a and the right screw part 18b like the opening / closing screw shaft 18 of 1st Embodiment. The extension screw shaft 17 and the open / close screw shaft 18 are both screw shafts whose screw directions are changed at the center. In FIG. 6, the guide bar 11 and the guide plate 12 are omitted, and the arrangement of the extension screw shaft 17 and the opening / closing screw shaft 18 is reversed left and right as compared with FIG. 1. The other parts are almost the same as those of the coil correction device 1 of the first embodiment, and the same reference numerals are given and description thereof is omitted. In the description of the coil correction device 2 below, all the expressions of positions and directions such as upward and downward are described in accordance with the directions in FIG.
[0033]
The transmission mechanism 40 includes a handle 41, a bevel gear 42 fixed to the rotation shaft thereof, and a bevel gear 43 fixed to the open / close screw shaft 18. The bevel gear 42 and the bevel gear 43 are engaged with each other with their rotation axes at an angle of 90 degrees. This handle 41 corresponds to the operating means. The transmission mechanism 40 further includes a spur gear 44 fixed to the open / close screw shaft 18, a spur gear 45 disposed on the outer periphery of the expansion screw shaft 17, a knob 46 disposed above the spur gear 45, A locking member 47 for locking 46 is provided. And these are supported by the support plate 48, and the transmission mechanism part 40 is comprised.
[0034]
The spur gear 44 is for transmitting the rotation of the open / close screw shaft 18 to the spur gear 45. The spur gear 45 is a gear having the same diameter and the same number of teeth as the spur gear 44 and meshes with the spur gear 44 to rotate in the opposite direction at the same speed. The knob 46 is for moving the spur gear 45 and the expansion screw shaft 17 in an interlocking manner or separating them by moving up and down. FIG. 6 shows a state where the knob 46 is pushed down and the spur gear 45 and the expansion screw shaft 17 are interlocked. When the knob 46 is pulled up, the knob 46 is locked by the locking member 47 and separated from the spur gear 45 as shown in FIG.
[0035]
A plurality of protrusions 46 a and 46 a are provided on the lower surface of the knob 46, and a plurality of recesses 45 a and 45 a are provided on the upper surface of the spur gear 45. As shown in FIG. 6, the protrusion 46a enters the recess 45a when the knob 46 is lowered. Thereby, the rotation of the spur gear 45 is transmitted to the expansion screw shaft 17 via the knob 46. In this state, the opening / closing screw shaft 18 and the expansion screw shaft 17 rotate at the same speed in opposite directions. Here, the portion constituted by the spur gear 44, the spur gear 45, and the knob 46 corresponds to the rotation transmitting means.
[0036]
In addition to this, the coil correcting device 2 includes a stopper 51 fixed to the fourth connecting member 34 and a cover plate 52 fixed to the second connecting member 31. These are set in length and position so that the stopper 51 comes into contact with the contact plate 52 when the second connecting member 31 and the fourth connecting member 34 approach each other to a predetermined distance. The stopper 51 and the contact plate 52 correspond to a regulating member.
[0037]
Further, as shown in FIG. 8, the coil correction device 2 is used with a support plate 48 suspended from above by guide bars 61, 61 and a guide plate 62. Further, a moving shaft 63 is provided through the guide plate 62, and the guide plate 62 is movable in the vertical direction along the moving shaft 63. A movement stopper 64 is attached to a predetermined portion of the movement shaft 63, and the downward movement of the guide plate 62 is restricted. In addition, a work support member 65 is provided for supporting the core 101 around which the coil 103 to be corrected is wound. Each of the moving shaft 63, the moving stopper 64, and the work support member 65 is supported by the base 66, and the mutual positional relationship is maintained. That is, when the guide plate 62 is lowered to a position where it abuts against the movement stopper 64, the center of the first extension portion 20 and the second extension portion 30 is arranged at the center portion in the axial direction of the core 101. .
[0038]
Next, operation | movement of this coil correction apparatus 2 is demonstrated. First, the core 101 serving as a workpiece is set on the workpiece support member 65. And the 1st expansion part 20 and the 2nd expansion part 30 are made into the initial state which is the state which closed the coil expansion claws 13,13 ... and the coil expansion claws 15,15 .... In this state, the guide plate 62 is lowered and brought into contact with the moving stopper 64. Thereby, the center of the 1st expansion part 20 and the 2nd expansion part 30 is arrange | positioned in the axial direction center part of the core 101. FIG. At this time, the distance between the third connecting member 24 and the fourth connecting member 34 may be set substantially equal to the lamination pressure of the core 101.
[0039]
Next, the spur gear 45 and the expansion screw shaft 17 are disconnected by operating the knob 46 so that the rotation of the spur gear 45 is not transmitted to the expansion screw shaft 17 (see FIG. 7). In this state, the handle 41 is rotated counterclockwise. The rotation of the handle 41 is transmitted as the rotation of the opening / closing screw shaft 18 via the bevel gears 42 and 43. As a result, the first connecting member 21 moves downward and the second connecting member 31 moves upward. The third connecting member 24 and the fourth connecting member 34 mesh with the expansion screw shaft 17, and the expansion screw shaft 17 does not rotate and does not move. Therefore, the coil expansion claws 13, 13... And the coil expansion claws 15, 15... Are opened and inserted between the both end faces of the core and the coil end portions. When the second connecting member 31 and the fourth connecting member 34 come close to a predetermined distance due to the movement of the second connecting member 31, the stopper 51 comes into contact with the contact plate 52, so that the rotation of the handle 41 is stopped.
[0040]
Next, the knob 46 is operated so that the rotation of the spur gear 45 is transmitted to the expansion screw shaft 17 (see FIG. 6). In this state, the rotation of the handle 41 is transmitted as the rotation of the opening / closing screw shaft 18 via the bevel gears 42 and 43 and simultaneously as the rotation of the expansion screw shaft 17 via the spur gears 44 and 45. At this time, the expansion screw shaft 17 rotates at the same speed in the opposite direction to the open / close screw shaft 18. Therefore, in this state, the handle 41 is rotated clockwise.
[0041]
Then, since the opening / closing screw shaft 18 rotates in the reverse direction, the first connecting member 21 moves upward and the second connecting member 31 moves downward. At the same time, the extension screw shaft 17 rotates in the reverse direction of the opening / closing screw shaft 18, and the extension screw shaft 17 is formed with a screw opposite to the opening / closing screw shaft 18. Therefore, the third connecting member 24 moves upward in the same direction as the first connecting member 21. At the same time, the fourth connecting member 34 moves downward in the same direction as the second connecting member 31. Since the expansion screw shaft 17 and the open / close screw shaft 18 rotate at the same speed, the first connection member 21 and the third connection member 24 or the second connection member 31 and the fourth connection member 34 have the same speed in the same direction. It will move with. That is, the coil expansion claws 13, 13... And the coil expansion claws 15, 15... Move in directions away from each other while being kept open. Therefore, similarly to the coil correction apparatus 1 of the first embodiment, the shape can be corrected by simultaneously pulling the coil end portion of the coil 103 in both the upper and lower directions.
[0042]
As described in detail above, according to the coil correction device 2 of the present embodiment, the coil expansion claws 13, 13... And the coil expansion claws 15, 15. The coil can be expanded. Therefore, the coil end portion of the coil 103 can be easily corrected.
[0043]
In this embodiment, transmission of rotation between the open / close screw shaft 18 and the expansion screw shaft 17 is switched by the up and down of the knob 46, so that switching between the transmission state and the non-transmission state is easy. Therefore, the coil 103 can be easily corrected by first rotating only the opening / closing screw shaft 18 and then rotating both the opening / closing screw shaft 18 and the expansion screw shaft 17 later.
In this embodiment, since the stopper 51 and the contact plate 52 are provided, the second connecting member 31 and the fourth connecting member 34 are prevented from being too close. Therefore, it becomes easy to open the coil expansion claws 13, 13,... And the coil expansion claws 15, 15,.
[0044]
“Third Embodiment”
Next, a method for manufacturing a motor using the coil correction device 1 (first embodiment) or the coil correction device 2 (second embodiment) will be described. The motor manufacturing method of this embodiment has the following three steps. (1st process) Insertion process by general inserter, (2nd process) Correction process by said coil correction apparatus 1 or coil correction apparatus 2, (3rd process) Expansion process by general expansion apparatus 3 steps.
[0045]
The coil 103 used here is a quadrangular frustum shape in which the circumferential length of the portion arranged on the inner diameter side of the core 101 is longer than the outer diameter side. In this coil 103, the circumference of each part is formed in advance as follows. In a portion with a short circumference arranged on the outer diameter side of the core 101, the circumference is slightly longer than the circumference of the pole teeth of the core 101. In addition, in a portion with a long circumference arranged on the inner diameter side of the core 101, it is assumed that four times the depth of the slot 102 is added thereto. In the middle part, the circumference should change smoothly.
[0046]
In this motor manufacturing method, a first insertion step is first performed on the coil 103 formed in this way. That is, the coil 103 is inserted into the slot 102 of the core 101 by a general inserter. As a result, as described above, the coil 103 inserted into the slot 102 has different coil end portions on the insertion inlet side and the insertion outlet side.
[0047]
Next, a second correction process is performed. That is, the coil correction device 1 or the coil correction device 2 corrects the coil end portions on the insertion inlet side and the insertion outlet side. As a result, the coil end portions on both sides have the same shape, and are corrected to a shape without sagging or kinking. This facilitates the expansion process of the next process.
[0048]
Next, a third expansion process is performed. That is, the coil end portion corrected by the correction process is expanded by a general expansion device. According to a general expansion device, the coil end portion is pushed out to the outer diameter side of the core 101 and expanded so as to fall down as it is. As a result, the shape of the coil end portion after the above three steps is completed is as shown in FIG. Although only the coil end portion on one side of the core 101 is shown here, the coil end portions on both sides have the same shape by executing the correction process.
[0049]
In the conventional manufacturing method, there is no correction process, and the expansion process is performed as it is after the insertion process. In this case, the coil end portion is expanded with the shape of the coil end portion being different between the insertion inlet side and the insertion outlet side. Therefore, in the expansion process, in order to allow the coil end portions of all the portions to be expanded outside the slot 102, a certain margin is provided for the length of the coil end portions in consideration of the portion to be inserted shortest. It was necessary to have it. Accordingly, it has been impossible to use the coil 103 having the right length without waste in the wire length as shown in FIG. On the other hand, by adding a correction process after the insertion process, the coil 103 having an appropriate length can be utilized.
[0050]
On the other hand, when a rectangular parallelepiped coil 103 having the same total circumference is used, the following is obtained. After such a coil 103 is inserted into the slot 102 and the coil end device is corrected by the coil correcting device 1 or the coil correcting device 2, the coil end portion is expanded when the coil end portion is expanded by a general expansion device. The shape is generally as shown in FIG. That is, in the coil end portion, the length of the portion arranged on the inner diameter side of the core 101 is substantially equal to the length of the portion arranged on the outer diameter side, so that the path of the inner diameter side portion 103c becomes the shortest distance. The part is folded. According to this method, the windings of the bent portion may rub against each other and the film may be damaged. For this reason, there were problems in terms of securing insulation and miniaturization of the coil end portion.
[0051]
Therefore, if the quadrangular pyramid-shaped coil 103 is used and manufactured by this motor manufacturing method, the coil 103 does not need to be folded back, so that the expansion is easy, and the winding film of the coil 103 is damaged in the expansion process. There is no fear of sticking. Furthermore, the winding length used for the coil 103 can be reduced. Therefore, it is possible to reduce the amount of windings used and manufacture a compact and lean motor core.
[0052]
As described above in detail, according to the motor manufacturing method of the present embodiment, the coil 103 has its coil end portion corrected by the coil correction device 1 or the coil correction device 2 after being inserted into the core of the motor. Is done. Therefore, it is possible to use the coil 103 that is formed in advance with an appropriate length. As a result, the amount of coil winding used was reduced. In addition, the expansion process of the next process has become easier, and the motor manufacturing method has no risk of scratching the winding film.
[0053]
Note that this embodiment is merely an example, and does not limit the present invention. Therefore, the present invention can naturally be improved and modified in various ways without departing from the gist thereof.
For example, the number of claws of the coil expansion claws 13, 13... And the coil expansion claws 15, 15.
Further, for example, the directions of the screws such as the expansion screw shaft 17 and the opening / closing screw shaft 18 are not limited thereto. As long as the coil expansion claws 13, 13... And the coil expansion claws 15, 15... Can be operated as described above, for example, the direction of operation may be reversed by reversing the direction of all the screws. Alternatively, the extension screw shaft 17 and the open / close screw shaft 18 may be screw shafts in the same direction. In the second embodiment, in this case, another gear is provided between the spur gear 44 and the spur gear 45, or the spur gear 44 and the spur gear 45 are connected by a toothed belt or a chain. do it.
[0054]
【The invention's effect】
As is apparent from the above description, according to the present invention, there are provided a coil correcting device, a coil correcting method, and a motor manufacturing method capable of easily correcting the coil end portions on both sides of the coil inserted into the slot of the core. Yes.
[Brief description of the drawings]
FIG. 1 is a front sectional view of a coil correction device according to a first embodiment.
FIG. 2 is a plan sectional view of the coil correction apparatus according to the first embodiment.
FIG. 3 is an explanatory diagram showing a procedure for coil expansion.
FIG. 4 is an explanatory diagram showing a procedure of coil expansion.
FIG. 5 is an explanatory diagram showing a procedure of coil expansion.
FIG. 6 is a front sectional view of a coil correction device according to a second embodiment.
FIG. 7 is an explanatory view showing a state in which the interlocking between the extension screw shaft and the open / close screw shaft is cut off.
FIG. 8 is an explanatory diagram showing how to use the coil correction device according to the second embodiment.
FIG. 9 is an explanatory diagram showing the shape of a coil end portion using a quadrangular pyramid shaped coil.
FIG. 10 is an explanatory diagram showing a shape of a coil end portion using a rectangular parallelepiped coil.
FIG. 11 is an explanatory diagram showing a state of the coil after insertion.
FIG. 12 is a cross-sectional view showing a state of the coil after insertion.
FIG. 13 is a cross-sectional view showing a conventional inserter.
[Explanation of symbols]
1, 2 Coil correction device
13, 15 Coil expansion claws (first and second expansion members)
14,16 links (first and second link members)
17 Extension screw shaft (second screw shaft)
17a Right-hand thread (third screw section)
17b Left-hand thread (fourth thread section)
18 Opening and closing screw shaft (first screw shaft)
18a Left-hand thread (first screw section)
18b Right-hand thread (second thread section)
21 First connecting member
24 Third connecting member
31 Second connecting member
34 Fourth connecting member
44 Spur gear (rotation transmission means)
45 Spur gear (rotation transmission means)
46 Knob (Rotation transmission means)
41 Handle (operating means)
51 Stopper (Regulator)
52 Address plate (regulation member)

Claims (6)

第１ネジ区間，および，これと逆向きの第２ネジ区間を有する第１ネジ軸と，
前記第１ネジ区間と相対する第３ネジ区間，およびこれと逆向きであるとともに前記第２ネジ区間と相対する第４ネジ区間を有し，前記第１ネジ軸と平行に配置された第２ネジ軸と，
前記第１ネジ区間に螺合するとともに前記第１ネジ軸の回転により軸方向に移動する第１連結部材と，
前記第２ネジ区間に螺合するとともに前記第１ネジ軸の回転により軸方向に，かつ，前記第１連結部材の移動と逆向きに移動する第２連結部材と，
前記第３ネジ区間に螺合するとともに前記第２ネジ軸の回転により軸方向に移動する第３連結部材と，
前記第４ネジ区間に螺合するとともに前記第２ネジ軸の回転により軸方向に，かつ，前記第３連結部材の移動と逆向きに移動する第４連結部材と，
前記第１連結部材に回動可能に取り付けられた第１拡張部材と，
前記第２連結部材に回動可能に取り付けられた第２拡張部材と，
前記第１拡張部材と前記第３連結部材とを結ぶ第１リンク部材と，
前記第２拡張部材と前記第４連結部材とを結ぶ第２リンク部材とを有することを特徴とするコイル修正装置。A first screw section, and a first screw shaft having a second screw section opposite to the first screw section;
A second screw section having a third screw section facing the first screw section and a fourth screw section opposite to the second screw section and facing the second screw section and arranged in parallel with the first screw shaft. A screw shaft;
A first connecting member screwed into the first screw section and moved in the axial direction by rotation of the first screw shaft;
A second connecting member that is screwed into the second screw section and moves in the axial direction by the rotation of the first screw shaft and in a direction opposite to the movement of the first connecting member;
A third connecting member that is screwed into the third screw section and moves in the axial direction by rotation of the second screw shaft;
A fourth connecting member that is screwed into the fourth screw section and moves in the axial direction by the rotation of the second screw shaft and in a direction opposite to the movement of the third connecting member;
A first expansion member rotatably attached to the first connecting member;
A second expansion member rotatably attached to the second connecting member;
A first link member connecting the first expansion member and the third connecting member;
A coil correction apparatus comprising: a second link member that connects the second expansion member and the fourth connection member. 請求項１に記載するコイル修正装置において，
前記第１ネジ軸は，前記第１ネジ区間と前記第２ネジ区間との間隔が可変なものであり，
前記第１ネジ区間は，前記第３連結部材に対して，軸方向にはともに移動し，軸周りには自在に回転できるように取り付けられており，
前記第２ネジ区間は，前記第４連結部材に対して，軸方向にはともに移動し，軸周りには自在に回転できるように取り付けられていることを特徴とするコイル修正装置。In the coil correction device according to claim 1,
The first screw shaft has a variable interval between the first screw section and the second screw section,
The first screw section is attached to the third connecting member so as to move together in the axial direction and freely rotate around the axis.
The coil correcting device, wherein the second screw section is attached to the fourth connecting member so as to move together in the axial direction and freely rotate around the axis. 請求項１に記載するコイル修正装置において，
前記第１ネジ軸と前記第２ネジ軸との間で回転が伝達される状態と，回転が伝達されない状態とを切り替える回転伝達手段を有し，
前記回転伝達手段は，伝達状態では，前記第１連結部材と前記第３連結部材とが同じ向きに移動するように回転を伝達することを特徴とするコイル修正装置。In the coil correction device according to claim 1,
Rotation transmission means for switching between a state in which rotation is transmitted between the first screw shaft and the second screw shaft and a state in which rotation is not transmitted;
In the transmission state, the rotation transmitting means transmits the rotation so that the first connecting member and the third connecting member move in the same direction. 請求項３に記載するコイル修正装置において，
前記第１連結部材と前記第３連結部材との接近および前記第２連結部材と前記第４連結部材との接近を規制する規制部材と，
前記第１ネジ軸を回転操作する操作手段とを有することを特徴とするコイル修正装置。In the coil correction device according to claim 3,
A regulating member that regulates the approach between the first connecting member and the third connecting member and the approach between the second connecting member and the fourth connecting member;
A coil correction apparatus comprising: operating means for rotating the first screw shaft. 第１ネジ区間，および，これと逆向きの第２ネジ区間を有する第１ネジ軸と，
前記第１ネジ区間と相対する第３ネジ区間，およびこれと逆向きであるとともに前記第２ネジ区間と相対する第４ネジ区間を有し，前記第１ネジ軸と平行に配置された第２ネジ軸と，
前記第１ネジ区間に螺合するとともに前記第１ネジ軸の回転により軸方向に移動する第１連結部材と，
前記第２ネジ区間に螺合するとともに前記第１ネジ軸の回転により軸方向に，かつ，前記第１連結部材の移動と逆向きに移動する第２連結部材と，
前記第３ネジ区間に螺合するとともに前記第２ネジ軸の回転により軸方向に移動する第３連結部材と，
前記第４ネジ区間に螺合するとともに前記第２ネジ軸の回転により軸方向に，かつ，前記第３連結部材の移動と逆向きに移動する第４連結部材と，
前記第１連結部材に回動可能に取り付けられた第１拡張部材と，
前記第２連結部材に回動可能に取り付けられた第２拡張部材と，
前記第１拡張部材と前記第３連結部材とを結ぶ第１リンク部材と，
前記第２拡張部材と前記第４連結部材とを結ぶ第２リンク部材とを有するコイル修正装置を用い，
前記第３連結部材と前記第４連結部材とを接近させ，前記第１連結部材と前記第３連結部材とを離間させ，前記第２連結部材と前記第４連結部材とを離間させた状態で，前記第１拡張部材および前記第２拡張部材をコイルと対面させ，
前記第１ネジ軸を回転させることにより，前記第１連結部材と前記第３連結部材とを接近させるとともに前記第２連結部材と前記第４連結部材とを接近させて，前記第１拡張部材および前記第２拡張部材をコイルに挿入し，
前記第２ネジ軸を回転させることにより，前記第１連結部材と前記第３連結部材との間隔および前記第２連結部材と前記第４連結部材との間隔を維持しつつ，前記第３連結部材と前記第４連結部材とを離間させて，前記第１拡張部材および前記第２拡張部材によりコイルを軸方向に拡張させることを特徴とするコイル修正方法。A first screw section, and a first screw shaft having a second screw section opposite to the first screw section;
A second screw section having a third screw section facing the first screw section and a fourth screw section opposite to the second screw section and facing the second screw section and arranged in parallel with the first screw shaft. A screw shaft;
A first connecting member screwed into the first screw section and moved in the axial direction by rotation of the first screw shaft;
A second connecting member that is screwed into the second screw section and moves in the axial direction by the rotation of the first screw shaft and in a direction opposite to the movement of the first connecting member;
A third connecting member that is screwed into the third screw section and moves in the axial direction by rotation of the second screw shaft;
A fourth connecting member that is screwed into the fourth screw section and moves in the axial direction by the rotation of the second screw shaft and in a direction opposite to the movement of the third connecting member;
A first expansion member rotatably attached to the first connecting member;
A second expansion member rotatably attached to the second connecting member;
A first link member connecting the first expansion member and the third connecting member;
Using a coil correction device having a second link member connecting the second expansion member and the fourth connecting member,
In a state where the third connecting member and the fourth connecting member are brought close to each other, the first connecting member and the third connecting member are separated from each other, and the second connecting member and the fourth connecting member are separated from each other. , Facing the first expansion member and the second expansion member to the coil,
By rotating the first screw shaft, the first connecting member and the third connecting member are brought closer to each other, and the second connecting member and the fourth connecting member are brought closer to each other, and the first expansion member and Inserting the second expansion member into the coil;
By rotating the second screw shaft, the third connecting member is maintained while maintaining the interval between the first connecting member and the third connecting member and the interval between the second connecting member and the fourth connecting member. And the fourth connecting member are separated from each other, and the coil is expanded in the axial direction by the first expansion member and the second expansion member. 第１ネジ区間，および，これと逆向きの第２ネジ区間を有する第１ネジ軸と，
前記第１ネジ区間と相対する第３ネジ区間，およびこれと逆向きであるとともに前記第２ネジ区間と相対する第４ネジ区間を有し，前記第１ネジ軸と平行に配置された第２ネジ軸と，
前記第１ネジ区間に螺合するとともに前記第１ネジ軸の回転により軸方向に移動する第１連結部材と，
前記第２ネジ区間に螺合するとともに前記第１ネジ軸の回転により軸方向に，かつ，前記第１連結部材の移動と逆向きに移動する第２連結部材と，
前記第３ネジ区間に螺合するとともに前記第２ネジ軸の回転により軸方向に移動する第３連結部材と，
前記第４ネジ区間に螺合するとともに前記第２ネジ軸の回転により軸方向に，かつ，前記第３連結部材の移動と逆向きに移動する第４連結部材と，
前記第１連結部材に回動可能に取り付けられた第１拡張部材と，
前記第２連結部材に回動可能に取り付けられた第２拡張部材と，
前記第１拡張部材と前記第３連結部材とを結ぶ第１リンク部材と，
前記第２拡張部材と前記第４連結部材とを結ぶ第２リンク部材とを有するコイル修正装置を用い，
前記第３連結部材と前記第４連結部材とを接近させ，前記第１連結部材と前記第３連結部材とを離間させ，前記第２連結部材と前記第４連結部材とを離間させた状態で，前記第１拡張部材および前記第２拡張部材を，モータのコアに取り付けられたコイルと対面させ，
前記第１ネジ軸を回転させることにより，前記第１連結部材と前記第３連結部材とを接近させるとともに前記第２連結部材と前記第４連結部材とを接近させて，前記第１拡張部材および前記第２拡張部材をコイルに挿入し，
前記第２ネジ軸を回転させることにより，前記第１連結部材と前記第３連結部材との間隔および前記第２連結部材と前記第４連結部材との間隔を維持しつつ，前記第３連結部材と前記第４連結部材とを離間させて，前記第１拡張部材および前記第２拡張部材によりコイルを軸方向に拡張させてその形状を修正することを特徴とするモータの製造方法。A first screw section, and a first screw shaft having a second screw section opposite to the first screw section;
A second screw section having a third screw section facing the first screw section and a fourth screw section opposite to the second screw section and facing the second screw section and arranged in parallel with the first screw shaft. A screw shaft;
A first connecting member screwed into the first screw section and moved in the axial direction by rotation of the first screw shaft;
A second connecting member that is screwed into the second screw section and moves in the axial direction by the rotation of the first screw shaft and in a direction opposite to the movement of the first connecting member;
A third connecting member that is screwed into the third screw section and moves in the axial direction by rotation of the second screw shaft;
A fourth connecting member that is screwed into the fourth screw section and moves in the axial direction by the rotation of the second screw shaft and in a direction opposite to the movement of the third connecting member;
A first expansion member rotatably attached to the first connecting member;
A second expansion member rotatably attached to the second connecting member;
A first link member connecting the first expansion member and the third connecting member;
Using a coil correction device having a second link member connecting the second expansion member and the fourth connecting member,
In a state where the third connecting member and the fourth connecting member are brought close to each other, the first connecting member and the third connecting member are separated from each other, and the second connecting member and the fourth connecting member are separated from each other. , Facing the first extension member and the second extension member to a coil attached to the core of the motor,
By rotating the first screw shaft, the first connecting member and the third connecting member are brought closer to each other, and the second connecting member and the fourth connecting member are brought closer to each other, and the first expansion member and Inserting the second expansion member into the coil;
By rotating the second screw shaft, the third connecting member is maintained while maintaining the interval between the first connecting member and the third connecting member and the interval between the second connecting member and the fourth connecting member. And the fourth connecting member, and the coil is expanded in the axial direction by the first expansion member and the second expansion member to correct the shape of the motor.
JP2003005388A 2003-01-14 2003-01-14 Coil correcting device, coil correcting method, and motor manufacturing method Expired - Fee Related JP3979293B2 (en)

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