JP2011205864A - Holding device for welding coil of rotary electric machine - Google Patents
Holding device for welding coil of rotary electric machine Download PDFInfo
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- JP2011205864A JP2011205864A JP2010073438A JP2010073438A JP2011205864A JP 2011205864 A JP2011205864 A JP 2011205864A JP 2010073438 A JP2010073438 A JP 2010073438A JP 2010073438 A JP2010073438 A JP 2010073438A JP 2011205864 A JP2011205864 A JP 2011205864A
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- 238000003466 welding Methods 0.000 title claims abstract description 43
- 239000004020 conductor Substances 0.000 claims abstract description 78
- 230000002093 peripheral effect Effects 0.000 claims description 162
- 238000004804 winding Methods 0.000 claims description 46
- 238000003825 pressing Methods 0.000 claims description 17
- 210000002105 tongue Anatomy 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
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Abstract
Description
本発明は、回転電機の巻線コイル、特に連続的に巻きつけられたコイル導体からなる巻線コイル（以下連続コイルともいう）における内周側と外周側の導体端部や渡り線（離れた巻線コイル導体端部をつなぐ途中線）同士を溶接する溶接保持装置に関する。 The present invention relates to a winding coil of a rotating electrical machine, particularly a winding coil composed of a continuously wound coil conductor (hereinafter also referred to as a continuous coil). The present invention relates to a welding holding device that welds intermediate windings connecting winding coil conductor ends.
従来の回転電機は単一のコアに対してコイル導体を組み込んでいた。これに対して、回転電機の体格の粗大化を抑え、かつ製造効率の良い新たな巻線コイルが求められており、特許文献１に見られるように、巻きつけたコイル導体に対して、分割コアでコアを形成するものが出現してきた。このような連続コイルの導体端部や渡り線同士を溶接する場合、従来の溶接技術において適応可能な技術はなかった。 Conventional rotating electrical machines have incorporated a coil conductor into a single core. On the other hand, there is a need for a new wound coil that suppresses the coarsening of the physique of the rotating electrical machine and has high manufacturing efficiency. As can be seen in Patent Document 1, the coil conductor that has been wound is divided. The thing which forms a core with a core has appeared. In the case of welding the conductor ends and the connecting wires of such a continuous coil, there has been no technique applicable in the conventional welding technique.
図１は、回転電機の巻線コイルの製品例を示す図である。このような巻線コイル２０は、複数層のコイル導体を所定の巻回方法で成形したものである。そして、巻線コイル２０の外周側から分割コアをはめ込んで、固定子コイルを完成させるものである。
図１に示すような巻線コイル２０において、内周側と外周側に多数の連続コイルの導体端部が、４８箇所ある。そのうちの３６箇所は、円周均等にコイル端部が内周側と外周側のコイルを繋いで横向き（径方向）に突き出されて等配列されている。残り１２箇所は、図１に示すように、それぞれの導体端部が内周側と外周側で上向きに突き出されて等配列されている。
FIG. 1 is a diagram illustrating a product example of a winding coil of a rotating electrical machine. Such a winding coil 20 is formed by forming a plurality of coil conductors by a predetermined winding method. And a split core is inserted from the outer peripheral side of the winding coil 20, and a stator coil is completed.
In the winding coil 20 as shown in FIG. 1, there are 48 conductor end portions of a large number of continuous coils on the inner peripheral side and the outer peripheral side. 36 of them are equally arranged with the coil end portions protruding evenly in the lateral direction (radial direction) by connecting the coils on the inner peripheral side and the outer peripheral side. As shown in FIG. 1, the remaining 12 portions are arranged in such a manner that the respective conductor ends protrude upward on the inner peripheral side and the outer peripheral side.
これらの１２箇所の導体端部は、相端子（３相の場合、Ｕ、Ｖ、Ｗ）と中性点を形成するために、１２箇所の所定の内周側と外周側に渡り線２と称すコイル導線で結び、溶接される。図２（ａ）は、巻線コイル２０の内周側と外周側に渡り線で結び、溶接した状態を示す図である。（ｂ）は、渡り線の結合状態を示す詳細図である。 These twelve conductor end portions are connected to the phase wire (in the case of three phases, U, V, W) and the neutral wire 2 on the predetermined inner peripheral side and outer peripheral side of the twelve points in order to form a neutral point. It is tied and welded with a coil conductor. FIG. 2A is a diagram illustrating a state in which the inner and outer peripheral sides of the winding coil 20 are connected by a crossover and welded. (B) is a detail figure which shows the connection state of a crossover.
連続コイルの巻き付け直後は、その導体端部の位置にばらつきがある。そのような導体端部を渡り線２で結ぶと、位置ずれは避けられず、このような整列性の悪い状態で溶接をかけると溶け込み不足や割れが発生し、品質不良が発生することがあった。溶接箇所に、１箇所でも溶接不良が発生すると、人による手直し、もしくは廃却しなければならず、製造効率上好ましくなかった。 Immediately after the continuous coil is wound, the positions of the conductor end portions vary. If such conductor ends are connected by the crossover 2, misalignment is unavoidable. If welding is performed in such a poorly aligned state, poor melting or cracking may occur, resulting in poor quality. It was. If a welding defect occurs even at one place, it must be repaired or discarded by a person, which is not preferable in terms of manufacturing efficiency.
本発明は、上記問題に鑑み、回転電機の巻線コイル、特に連続的に巻きつけられたコイル導体からなる巻線コイル（以下連続コイル）における内周側と外周側の導体端部や渡り線（離れた巻線コイル導体端部をつなぐ途中線）同士を溶接する溶接保持装置を提供するものである。 In view of the above problems, the present invention provides a winding coil of a rotating electrical machine, in particular, a winding end coil (hereinafter referred to as a continuous coil) composed of a continuously wound coil conductor and inner and outer conductor ends and a jumper wire. The present invention provides a welding holding device that welds (an intermediate line connecting ends of separated winding coil conductors).
上記課題を解決するために、請求項１の発明は、巻線コイル（２０）の導体端部と渡り線（２）の端部とを溶接するための溶接保持装置であって、外周側の前記導体端部と前記渡り線（２）の端部とを収容して位置決めする外周収容凹部（５３−２、６０−２）、渡り線支持舌片（５３−１、６０−１）、及び、前記渡り線（２）に対する当接面（５３−４、６０−４）を有する、複数個の外周電極（３１、５３、６０）と、複数個の外周電極（３１、５３、６０）が、それぞれ固定された複数個の外周電極押さえガイド（４４）と、前記渡り線（２）の上に載置されて、前記外周収容凹部（５３−２、６０−２）内に収容された前記導体端部と前記渡り線（２）の端部を接合する外周リング電極（７２）と、を具備する溶接保持装置である。 In order to solve the above-mentioned problems, the invention of claim 1 is a welding holding device for welding a conductor end of a winding coil (20) and an end of a crossover (2), An outer periphery accommodating recess (53-2, 60-2) for accommodating and positioning the conductor end and the end of the crossover (2), a crossover support tongue (53-1, 60-1), and A plurality of outer peripheral electrodes (31, 53, 60) and a plurality of outer peripheral electrodes (31, 53, 60) having contact surfaces (53-4, 60-4) with respect to the connecting wire (2). The plurality of outer peripheral electrode pressing guides (44) fixed to each other, and placed on the connecting wire (2) and received in the outer peripheral receiving recesses (53-2, 60-2). A welding holding device comprising a conductor end and an outer ring electrode (72) that joins the end of the crossover (2).
巻線コイル２０の導体端部、渡り線端部、それら同士を溶接する際に、被溶接端部を、巻線コイル２０の軸に対して回転方向、上下方向、径方向に、確実に位置決めできる電極形状とした。これにより、電極自体にガイド機能を持たせ、整列性の良い状態で溶接を行うことができる。そして、溶け込み不足や割れなどの品質不良が発生することがなく、製造効率をあげることができる。 When welding the conductor end of the winding coil 20, the crossover end, and each other, the welding end is reliably positioned in the rotational direction, the vertical direction, and the radial direction with respect to the axis of the winding coil 20. The electrode shape was made. As a result, the electrode itself can have a guide function, and welding can be performed with good alignment. In addition, quality defects such as insufficient melting and cracking do not occur, and production efficiency can be increased.
請求項２の発明は、前記渡り線（２）の形状に倣った凹部（７５）を有する位置決めリング（７４）をさらに具備することを特徴とする。これにより、離れたコイル端をつなぐ途中線（渡り線）に対しても、径方向の位置決めリングを組み込むことで安定した溶接が可能となった。 The invention of claim 2 further comprises a positioning ring (74) having a recess (75) following the shape of the crossover (2). As a result, stable welding can be performed by incorporating a radial positioning ring even on an intermediate line (crossover wire) that connects the remote coil ends.
請求項３の発明は、巻線コイル（２０）の導体端部と渡り線（２）の端部とを溶接するための溶接保持装置であって、外周側の前記導体端部と前記渡り線（２）の端部とを収容して位置決めする外周収容凹部（５３−２、６０−２）、渡り線支持舌片（５３−１、６０−１）、及び、前記渡り線（２）に対する当接面（５３−４、６０−４）を有する、複数個の外周電極（３１、５３、６０）と、複数個の外周電極（３１、５３、６０）が、それぞれ固定された複数個の外周電極押さえガイド（４４）と、内周側の前記導体端部と前記渡り線（２）端部とを収容して位置決めする内周収容凹部（８３−２）を有する、複数個の内周電極（８３）と、複数個の内周電極（８３）が、それぞれ固定された複数個の内周電極押さえガイド（４３）と、前記渡り線（２）の上に載置されて、前記内周収容凹部（８３−２）内に収容された内周側の前記導体端部と前記渡り線（２）の端部を接合する内周リング電極（７３）と、を具備する溶接保持装置である。 The invention of claim 3 is a welding holding device for welding the conductor end of the winding coil (20) and the end of the crossover wire (2), the outer end of the conductor end and the crossover wire. (2) with respect to the outer peripheral housing recess (53-2, 60-2), the crossover support tongue (53-1, 60-1), and the crossover (2) A plurality of outer peripheral electrodes (31, 53, 60) having a contact surface (53-4, 60-4) and a plurality of outer peripheral electrodes (31, 53, 60) are fixed to each other. A plurality of inner peripheries having an outer peripheral electrode holding guide (44) and an inner peripheral accommodating recess (83-2) for accommodating and positioning the inner end side conductor end and the connecting wire (2) end. An electrode (83) and a plurality of inner peripheral electrodes (83) fixed to a plurality of inner peripheral electrode pressing guides (43), respectively. It is placed on the crossover wire (2) and joins the end portion of the crossover wire (2) and the end portion of the crossover wire (2) inside the inner periphery housing recess (83-2). And an inner ring electrode (73).
これにより、内径側の導体端部、渡り線端部、それら同士を溶接する際に、被溶接端部を、巻線コイル２０の軸に対して回転方向、上下方向、径方向に、確実に位置決めできる電極形状とした。これにより、電極自体にガイド機能を持たせ、整列性の良い状態で溶接を行うことができる。 Thereby, when welding the conductor end part on the inner diameter side, the connecting wire end part, and each other, the welded end part can be reliably rotated, vertically, and radially with respect to the axis of the winding coil 20. It was set as the electrode shape which can be positioned. As a result, the electrode itself can have a guide function, and welding can be performed with good alignment.
なお、上記に付した符号は、後述する実施形態に記載の具体的実施態様との対応関係を示す一例である。 In addition, the code | symbol attached | subjected above is an example which shows a corresponding relationship with the specific embodiment as described in embodiment mentioned later.
以下、図面を参照して、本発明の一実施形態を説明する。各実施態様について、同一構成の部分には、同一の符号を付してその説明を省略する。従来技術に対しても同様に同一構成の部分には、同一の符号を付してその説明を省略する。
図１に示すような巻線コイル２０は、複数層のコイル導体を所定の巻回方法で成形したものである。内周側と外周側に多数の連続コイルの導体端部が、４８箇所あり、そのうちの３６箇所は、円周均等にコイル端部が内周側と外周側のコイルを繋いで横向き（径方向）に突き出されて等配列されている。残り１２箇所の１２箇所の導体端部は、相端子（３相の場合、Ｕ、Ｖ、Ｗ）と中性点を形成するために、１２箇所の所定の内周側と外周側に渡り線２と称すコイル導線で結び、溶接される。巻線コイル２０の導体端部は４８箇所に限定されるものではなく、端部数は回転電機の相数等に応じて適宜設定されるものである。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. About each embodiment, the same code | symbol is attached | subjected to the part of the same structure, and the description is abbreviate | omitted. Similarly, with respect to the prior art, parts having the same configuration are denoted by the same reference numerals and description thereof is omitted.
A winding coil 20 as shown in FIG. 1 is formed by forming a plurality of coil conductors by a predetermined winding method. There are 48 conductor end portions of a large number of continuous coils on the inner peripheral side and the outer peripheral side, and 36 of them have a coil end portion that connects the inner peripheral side and outer peripheral side coils in a circumferential direction (radial direction). ) And are arranged in an equal arrangement. The remaining twelve conductor ends of the twelve are crossovers to the predetermined inner peripheral side and outer peripheral side of the twelve points in order to form neutral points with phase terminals (in the case of three phases, U, V, W). They are tied and welded together with a coil conductor called 2. The number of conductor ends of the winding coil 20 is not limited to 48, and the number of ends is appropriately set according to the number of phases of the rotating electrical machine.
本発明の一実施形態は、図１の巻線コイルで説明するが、本発明はこの製品例に限定されるものではない。巻線コイルを複数層のコイル導体を所定の巻回方法で成形したものであれば、巻線コイルの導体端部同士を渡り線で連結する場合には、全て適用できるものである。渡り線とは、離れた巻線コイル導体端部をつなぐ途中線のことであり、巻線コイル導体が連続して、巻線コイルの内外周の一端側から他端側（内外周のうちの反対側又は同じ側の別端部）に延びる部分を指す場合と、巻線コイル導体端部とは別部材で作られた導体線（図２（ｂ）の符号２で示す線）を指す場合がある。本発明の一実施形態は、これらの場合の双方において適用できるものである。 Although one embodiment of the present invention will be described with reference to the winding coil of FIG. 1, the present invention is not limited to this product example. As long as the winding coil is formed by forming a plurality of layers of coil conductors by a predetermined winding method, the present invention can be applied to all cases where the conductor ends of the winding coil are connected by a jumper. A jumper wire is a halfway wire that connects the ends of separated winding coil conductors, and the winding coil conductors are continuous, from one end side to the other end side (out of the inner and outer sides of the winding coil). When pointing to a portion extending to the other end of the opposite side or the same side) and when referring to a conductor wire made of a different member from the winding coil conductor end (a line indicated by reference numeral 2 in FIG. 2B) There is. One embodiment of the present invention is applicable in both of these cases.
連続コイルの巻き付け直後は、その導体端部の位置にばらつきがある。そのような導体端部を渡り線２で結ぶと、位置ずれは避けられず、このような整列性の悪い状態で溶接をかけると溶け込み不足や割れが発生し、品質不良が発生する。このような連続コイルの問題に対処するために、後述するように、外周・内周電極自体に位置決め機能を持たせたので、導体端部を渡り線２で結んでも位置ずれを起こすことなく良好な溶接を行うことができる。 Immediately after the continuous coil is wound, the positions of the conductor end portions vary. When such conductor end portions are connected by the crossover wire 2, positional deviation is unavoidable. When welding is performed in such a poorly aligned state, insufficient melting or cracking occurs, resulting in poor quality. In order to deal with such a problem of the continuous coil, as will be described later, since the positioning function is provided to the outer and inner peripheral electrodes themselves, it is preferable that the conductor end portion is connected with the crossover wire 2 without causing a displacement. Welding can be performed.
図３は、本発明の一実施形態の概略を示す正面図である。図４は、図３の一部を示す部分平面図である。図５は、図４の一部詳細図であり、位置決めリング７４で渡り線を支持した状態を示している。図６は、位置決めリング７４の平面図である。図７（ａ）は、外径リング電極７２を示す平面図、（ｂ）は、内径リング電極７３を示す平面図である。 FIG. 3 is a front view schematically showing an embodiment of the present invention. 4 is a partial plan view showing a part of FIG. FIG. 5 is a partial detail view of FIG. 4 and shows a state in which the connecting wire is supported by the positioning ring 74. FIG. 6 is a plan view of the positioning ring 74. FIG. 7A is a plan view showing the outer ring electrode 72, and FIG. 7B is a plan view showing the inner ring electrode 73.
図３に示すように、巻線コイル２０には、スロット数４８のコア５（分割コアを外周側からはめ込んで形成）が装着され、コア５の外周には、コア外周ガイド４５が装着されている。コア外周ガイド４５に設けられたピン穴４５’は、ベース３５に設けられたピン４９と係合している。巻線コイル２０の内周側は、複数個の内周保持駒３６と、それを内周側から支持する円筒支持体３７によって、ベース３５上に固定されている。円筒支持体３７の上部には、支持台４２が円筒支持体３７内周に嵌合して載置されている。 As shown in FIG. 3, the winding coil 20 is provided with a core 5 having 48 slots (formed by inserting a split core from the outer peripheral side), and a core outer peripheral guide 45 is attached to the outer periphery of the core 5. Yes. A pin hole 45 ′ provided in the core outer periphery guide 45 is engaged with a pin 49 provided in the base 35. The inner peripheral side of the winding coil 20 is fixed on the base 35 by a plurality of inner peripheral holding pieces 36 and a cylindrical support 37 that supports the inner peripheral holding pieces 36 from the inner peripheral side. On the upper part of the cylindrical support 37, a support base 42 is fitted and placed on the inner periphery of the cylindrical support 37.
支持台４２の中央穴部は、テーパ面になっており、内周電極縮径ガイド４１が嵌合している。内周電極縮径ガイド４１は、ボルト４１により支持台４２の中央穴部と深さを調整可能に係合している。支持台４２と一体に内周電極ガイド支持部４２’が設けられており、内周電極ガイド支持部４２’には、複数の内周電極ガイド４３を保持する貫通穴が、複数設けられている。内周電極ガイド４３の平面図は図５に示されている。内周電極ガイド４３に、ボルト穴８３−５とボルトで、内周電極８３が取り付けられている。 The central hole portion of the support base 42 has a tapered surface, and the inner peripheral electrode diameter reduction guide 41 is fitted therein. The inner electrode reduced diameter guide 41 is engaged with the central hole portion of the support base 42 by a bolt 41 so that the depth thereof can be adjusted. An inner peripheral electrode guide support portion 42 ′ is provided integrally with the support base 42, and the inner peripheral electrode guide support portion 42 ′ is provided with a plurality of through holes for holding a plurality of inner peripheral electrode guides 43. . A plan view of the inner peripheral electrode guide 43 is shown in FIG. An inner peripheral electrode 83 is attached to the inner peripheral electrode guide 43 with bolt holes 83-5 and bolts.
内周電極ガイド４３には位置決めねじ９１（図３参照）が設けられており、内周電極縮径ガイド４１の円筒面に当接している。ねじ９１を調整して、内周電極ガイド４３を図３において左右方向に出し入れすることができる。内周電極縮径ガイド４１のテーパ面に内周電極ガイド４３の端面４３’を当接させれば、内周電極縮径ガイド４１をボルト４１で深さ調整すれば、同様に内周電極ガイド４３を左右方向に出し入れすることができる。 The inner peripheral electrode guide 43 is provided with a positioning screw 91 (see FIG. 3), and is in contact with the cylindrical surface of the inner peripheral electrode reduced diameter guide 41. By adjusting the screw 91, the inner peripheral electrode guide 43 can be taken in and out in the left-right direction in FIG. If the end surface 43 ′ of the inner peripheral electrode guide 43 is brought into contact with the tapered surface of the inner peripheral electrode reduced diameter guide 41, the inner peripheral electrode guide is similarly adjusted by adjusting the depth of the inner peripheral electrode reduced diameter guide 41 with the bolt 41. 43 can be taken in and out in the left-right direction.
次に、外周電極３１について説明する。一般的外周電極に対する符号は３１としたが、後述の５３、６０も外周電極である。他の実施形態としての外周電極３１の変形形状は、様々あるのでこの点については後述する。
図４、５を参照して、外周電極５３、６０は、ボルト穴５３−５、６０−５により、外周電極押えガイド４４に固定されている。外周電極押えガイド４４は、外周電極押えガイド支持体４７に保持されており、外周電極押えガイド支持体４７は、支柱４６によりベース３５に対して支持されている。外周電極押えガイド４４の図３上右端部には、調整ねじ４８が設けられており、外周電極押えガイド４４を、図３において左右方向に出し入れすることができる。
Next, the outer peripheral electrode 31 will be described. Although the code | symbol with respect to the general outer periphery electrode was set to 31, 53 and 60 mentioned later are also outer periphery electrodes. Since there are various deformed shapes of the outer peripheral electrode 31 as another embodiment, this point will be described later.
4 and 5, the outer peripheral electrodes 53 and 60 are fixed to the outer peripheral electrode pressing guide 44 by bolt holes 53-5 and 60-5. The outer peripheral electrode presser guide 44 is held by an outer peripheral electrode presser guide support body 47, and the outer peripheral electrode presser guide support body 47 is supported by the support column 46 with respect to the base 35. An adjustment screw 48 is provided at the upper right end portion of the outer peripheral electrode pressing guide 44 in FIG. 3, and the outer peripheral electrode pressing guide 44 can be taken in and out in the left-right direction in FIG.
図３における７２は、外径リング電極７２であり、外周電極３１（５３、６０等）に対して、抵抗溶接の他極を構成し、かつ、巻線コイルの外周側の導体端部同士や渡り線２を挟みつける働きを有している。図７（ａ）の７２’は、導体端部に対する当接面である。巻線コイルの内周側の導体端部同士を溶接する場合には、図３における７２の位置で、巻線コイルの内周側の導体端部に接した所に、内径リング電極７３が設置される。内径リング電極７３は、内周電極８３に対して、抵抗溶接の他極を構成し、かつ、巻線コイルの内周側の導体端部同士を挟みつける働きを有している。図７（ｂ）の７３’は、導体端部に対する当接面である。ホルダ７１については、図４、７に示されている。ホルダ７１は、外径リング電極７２と内径リング電極７３に対して、兼用のホルダである。 Reference numeral 72 in FIG. 3 denotes an outer ring electrode 72, which forms the other electrode of resistance welding with respect to the outer peripheral electrode 31 (53, 60, etc.), and between the conductor ends on the outer peripheral side of the winding coil, It has the function of sandwiching the crossover 2. Reference numeral 72 ′ in FIG. 7A denotes a contact surface with respect to the conductor end. When welding the inner peripheral conductor ends of the winding coil, an inner diameter ring electrode 73 is installed at a position 72 in FIG. 3 in contact with the inner peripheral conductor end of the winding coil. Is done. The inner ring electrode 73 constitutes the other electrode of resistance welding with respect to the inner peripheral electrode 83 and has a function of sandwiching the conductor end portions on the inner peripheral side of the winding coil. Reference numeral 73 ′ in FIG. 7B denotes a contact surface with respect to the conductor end. The holder 71 is shown in FIGS. The holder 71 is a combined holder for the outer ring electrode 72 and the inner ring electrode 73.
図３の左側において、外径リング電極７２又は内径リング電極７３を保持固定するホルダ７４の後端部が、調整ねじ９３で、支持台４２に当接している。３４は、ＴＩＧ溶接時不活性ガス雰囲気とするトーチである。４は、コイル端子クランプである。３相の回転電機の場合、Ｕ、Ｖ、Ｗ各端子を外部に取出すための外部接続用端子への導体線を、コイル端子クランプ４で把持する。 On the left side of FIG. 3, the rear end portion of the holder 74 that holds and fixes the outer diameter ring electrode 72 or the inner diameter ring electrode 73 is in contact with the support base 42 by the adjustment screw 93. Reference numeral 34 denotes a torch having an inert gas atmosphere during TIG welding. 4 is a coil terminal clamp. In the case of a three-phase rotating electric machine, a coil wire clamp 4 holds a conductor wire to an external connection terminal for taking out the U, V, and W terminals to the outside.
図８は、外周電極の一実施形態としての詳細図である。（ａ）は、外周電極５３の側面図、（ｂ）は、外周電極５３の平面図である。（ｃ）は、外周電極６０の側面図、（ｄ）は、外周電極６０の平面図である。（ｅ）は、内周電極８３の側面図、（ｆ）は、内周電極８３の平面図である。
外周電極３１は、渡り線の形状により、いくつかの変形例があるが、ここでは、一例として、図８の５３、６０を例示として説明する。外周電極５３、６０は、外周側の導体端部と渡り線端部とを収容して位置決めする外周収容凹部５３−２、６０−２、渡り線支持舌片５３−１、６０−１、及び、渡り線２に対する当接面５３−４、６０−４を有する。
外周収容凹部５３−２、６０−２は、ここでは図５に示すように、隣接した外周電極の側面とで収容凹部が形成されているが、これに限らず、１個の外周電極に収容凹部が、溝状に形成されていても良い。
FIG. 8 is a detailed view of one embodiment of the outer peripheral electrode. (A) is a side view of the outer peripheral electrode 53, and (b) is a plan view of the outer peripheral electrode 53. (C) is a side view of the outer peripheral electrode 60, and (d) is a plan view of the outer peripheral electrode 60. (E) is a side view of the inner peripheral electrode 83, and (f) is a plan view of the inner peripheral electrode 83.
Although there are some variations of the outer peripheral electrode 31 depending on the shape of the crossover wire, here, description will be given by taking 53 and 60 in FIG. 8 as an example. The outer peripheral electrodes 53 and 60 include outer peripheral receiving recesses 53-2 and 60-2 that receive and position the outer peripheral conductor end and the crossover end, crossover support tongues 53-1, 60-1, and The contact surfaces 53-4 and 60-4 with respect to the connecting wire 2 are provided.
As shown in FIG. 5, the outer peripheral recesses 53-2 and 60-2 are each formed with an adjacent recess on the side surface of the adjacent outer peripheral electrode. The concave portion may be formed in a groove shape.
外周電極３１、５３、６０は複数個存在して、巻線コイル２０の内周側と外周側に渡り線で連結する領域において、外周収容凹部５３−２、６０−２に外周側の導体端部と渡り線端部とを収容して位置決めを行う。図４、５に示すように、複数の外周電極３１、５３、６０は、それぞれ複数個の外周電極押さえガイド４４に固定されている。位置決めの観点から、外周電極の個数、当接面の形状は適宜設定されるべきものである。 In a region where there are a plurality of outer peripheral electrodes 31, 53, 60 and the inner and outer peripheral sides of the winding coil 20 are connected by a crossover, the outer peripheral conductor ends 53-2, 60-2 are connected to outer peripheral conductor ends. The positioning is performed by accommodating the cross section and the crossover end. As shown in FIGS. 4 and 5, the plurality of outer peripheral electrodes 31, 53, and 60 are respectively fixed to the plurality of outer peripheral electrode pressing guides 44. From the viewpoint of positioning, the number of outer peripheral electrodes and the shape of the contact surface should be appropriately set.
図６に示すように、位置決めリング７４は、渡り線２の形状に倣った凹部７５を有している。図５には、凹部７５が渡り線２の内径側（巻線コイル中心に対して内径側）の形状に合わせて形成されており、外径方向に位置決めリング７４が押圧して、渡り線２を外周側の導体端部に接合させる。この位置決めリング７４を用いれば、渡り線の位置決めが確実になり、安定した溶接が可能となる。 As shown in FIG. 6, the positioning ring 74 has a recess 75 that follows the shape of the jumper wire 2. In FIG. 5, the concave portion 75 is formed in conformity with the shape of the inner diameter side of the crossover wire 2 (inner diameter side with respect to the center of the winding coil), and the positioning ring 74 is pressed in the outer diameter direction. Is joined to the conductor end on the outer peripheral side. If this positioning ring 74 is used, the positioning of the crossover wire is ensured and stable welding is possible.
位置決めリング７４が、図５のように設置された後、渡り線２の上に、外周リング電極７２を載置する。導体端部と渡り線２端部は、外周収容凹部５３−２、６０−２内に収容された状態で、外周リング電極７２（図７（ａ）参照）が外径方向に押圧して接合させ、かつ、外周リング電極７２が、上から渡り線２を押圧して、渡り線支持舌片５３−１、６０−１との間に安定的に位置決めすることができるのである。外周リング電極７２は、図４に示すホルダ７１の図面上の左右の２つ穴で連結する。内周リング電極７３（図７（ｂ）参照）を使用する場合には、ホルダ７１に内周リング電極７３を付け替える。位置決めリング７４やホルダ７１は、ボルトで左右２箇所、支持台４２に固定される。この際、ホルダ７１は、このボルト固定用の穴が長穴であることから、調整ねじ９３で外周、内周リング電極７２、７３の外径方向、中心方向の位置決めがなされる。 After the positioning ring 74 is installed as shown in FIG. 5, the outer peripheral ring electrode 72 is placed on the crossover wire 2. The conductor end portion and the connecting wire 2 end portion are joined by the outer peripheral ring electrode 72 (see FIG. 7A) being pressed in the outer diameter direction while being accommodated in the outer peripheral accommodating recesses 53-2 and 60-2. In addition, the outer peripheral ring electrode 72 presses the crossover wire 2 from above and can be stably positioned between the crossover support tongues 53-1, 60-1. The outer peripheral ring electrode 72 is connected by two left and right holes on the drawing of the holder 71 shown in FIG. When using the inner ring electrode 73 (see FIG. 7B), the inner ring electrode 73 is replaced with the holder 71. The positioning ring 74 and the holder 71 are fixed to the support base 42 at two left and right positions with bolts. At this time, since the bolt 71 is a long hole, the holder 71 is positioned in the outer diameter direction and the center direction of the outer peripheral and inner peripheral ring electrodes 72 and 73 by the adjusting screw 93.
以上、外径側の導体端部と渡り線２端部とを溶接する場合の溶接保持装置を説明したが、内径側の導体端部と渡り線２端部とを溶接する場合の溶接保持装置は次のようなものとなる。この場合には、ホルダ７１に内周リング電極７３が取り付けられて、図３の７２の位置で、巻線コイルの内周側の導体端部に接した所に、内径リング電極７３が設置される。
図８（ｅ）、（ｆ）にみられるように、内周電極８３は、内周側の前記導体端部と渡り線端部とを収容して位置決めする内周収容凹部８３−２を有する。内周電極８３は複数個も受けられている。複数個の内周電極８３は、ボルト穴８３−５により、それぞれ複数個の内周電極押さえガイド４３に固定されている。一方、支持台４２と一体に内周電極ガイド支持部４２’が設けられており、内周電極ガイド支持部４２’には、複数の内周電極ガイド４３を保持する貫通穴が、複数設けられている。ねじ９１を調整して、内周電極ガイド４３を、図３において左右方向に出し入れすることができる。あるいは、内周電極縮径ガイド４１のテーパ面に内周電極ガイド４３の端面４３’を当接させれば、内周電極縮径ガイド４１をボルト４１で深さ調整すれば、内周電極ガイド４３を左右方向に出し入れすることができる。
The welding holding device in the case where the outer end side conductor end portion and the crossover wire 2 end portion are welded has been described above, but the inner diameter side conductor end portion and the crossover wire 2 end portion is welded. Is as follows. In this case, the inner ring electrode 73 is attached to the holder 71, and the inner ring electrode 73 is installed at a position 72 in FIG. 3 in contact with the conductor end on the inner circumference side of the winding coil. The
As shown in FIGS. 8E and 8F, the inner peripheral electrode 83 has an inner peripheral accommodating recess 83-2 that accommodates and positions the conductor end and the crossover end on the inner peripheral side. . A plurality of inner peripheral electrodes 83 are also received. The plurality of inner peripheral electrodes 83 are fixed to the plurality of inner peripheral electrode pressing guides 43 by bolt holes 83-5, respectively. On the other hand, an inner peripheral electrode guide support portion 42 ′ is provided integrally with the support base 42, and the inner peripheral electrode guide support portion 42 ′ is provided with a plurality of through holes for holding a plurality of inner peripheral electrode guides 43. ing. The inner peripheral electrode guide 43 can be taken in and out in the left-right direction in FIG. 3 by adjusting the screw 91. Alternatively, if the end surface 43 ′ of the inner circumferential electrode guide 43 is brought into contact with the tapered surface of the inner circumferential electrode reduced diameter guide 41, the inner circumferential electrode guide is obtained by adjusting the depth of the inner circumferential electrode reduced diameter guide 41 with the bolt 41. 43 can be taken in and out in the left-right direction.
本実施形態では、内周電極８３には、外周電極のような渡り線支持舌片５３−１、６０−１が無いが、内周電極にも同様な渡り線支持舌片（図示せず）を設けても良い。本実施形態では、内周側導体端部と渡り線２端部との溶接においては、内周リング電極７３が、渡り線２の上に載置された場合、外周電極の渡り線支持舌片５３−１、６０−１が支持に利用される。内周収容凹部８３−２内に収容された内周側の導体端部と渡り線２の端部を押圧すると、両端部が接合される。 In this embodiment, the inner peripheral electrode 83 does not have the connecting wire support tongues 53-1 and 60-1 like the outer peripheral electrode, but the inner peripheral electrode also has a similar connecting wire support tongue (not shown). May be provided. In the present embodiment, when the inner peripheral ring electrode 73 is placed on the connecting wire 2 in the welding of the inner peripheral conductor end and the connecting wire 2 end, the connecting wire supporting tongue of the outer peripheral electrode is used. 53-1, 60-1 are used for support. When the inner peripheral side conductor end accommodated in the inner peripheral accommodating recess 83-2 and the end of the crossover 2 are pressed, both ends are joined.
本実施形態は、巻線コイルの軸に対して回転方向、上下方向、径方向に関して確実に位置決めできる電極形状として、電極自体にガイド機能を持たせた。更に、離れたコイル端をつなぐ途中線（渡り線）に対しても、径方向の位置決めリングを組み込むことで安定した溶接が可能とした。 In this embodiment, the electrode itself has a guide function as an electrode shape that can be reliably positioned with respect to the axis of the winding coil in the rotational direction, the vertical direction, and the radial direction. Furthermore, stable welding can be performed by incorporating a radial positioning ring even on the intermediate wire (crossover wire) that connects the remote coil ends.
内周側導体端部、外周側導体端部の溶接を１回目に外周側、２回目に内周側の順に分けて行う場合の手順について述べる。１回目の外周側溶接においては、外周の各導体端部の数に合わせ、所定の範囲（約９０度の１２箇所分）を円周等分割に外周電極押さえガイド４４を最外周に配置し、それに取り付けられた外周電極３１、５３、６０に溝（外周収容凹部）を施し、溝の中に外周側導体端部を収めるようにする。外周電極押さえガイド４４は複数に分割して、製品の投入、取出用に径方向に前後できる構成としている。この外周電極押さえガイド４４が中心に向って（縮径方向に）前進すると、各々の導体端部が電極の外周収容凹部に案内され、径方向及び回転方向の位置が決まることになる。
離れたコイル端部間をつなぐ渡り線においては、予め支持台４２に取付けた位置決めリング７４の外周に渡り線を沿わせることで、渡り線２の径方向の位置決めができるようにした。
A procedure in the case of performing welding of the inner peripheral side conductor end and the outer peripheral side conductor end in the order of the outer peripheral side at the first time and the inner peripheral side at the second time will be described. In the first outer periphery side welding, according to the number of conductor ends on the outer periphery, a predetermined range (12 portions of about 90 degrees) is equally divided into a circumference, and the outer electrode pressing guide 44 is arranged on the outermost periphery, Grooves (peripheral housing recesses) are provided on the outer peripheral electrodes 31, 53, and 60 attached to the outer peripheral electrodes so that the outer peripheral conductor end portions are accommodated in the grooves. The outer peripheral electrode pressing guide 44 is divided into a plurality of parts so that it can be moved back and forth in the radial direction for loading and unloading products. When the outer peripheral electrode pressing guide 44 advances toward the center (in the reduced diameter direction), each conductor end is guided to the outer peripheral accommodating recess of the electrode, and the positions in the radial direction and the rotational direction are determined.
In the connecting wire connecting between the separated coil ends, the connecting wire 2 is placed along the outer periphery of the positioning ring 74 attached to the support base 42 in advance so that the connecting wire 2 can be positioned in the radial direction.
２回目の内周側溶接においては、外周側コイルと同様、内周側の各コイル端部の数に合わせ、所定の範囲（約９０度の１２箇所分）を円周等分割に、内周電極押さえガイド４３を内側に配置し、それに取り付けられた内周電極８３に溝（内周収容凹部）を施し、溝の中に内周側導体端部を収めるようにする。外周電極押さえガイド４４と同様に、内周電極押さえガイド４３も複数に分割して、製品の投入、取出用に径方向に前後できる構成としている。この内周電極押さえガイド４３が放射状に向って（伸径方向に）前進すると、各々の導体端部が電極の内周収容凹部に案内され、径方向及び回転方向の位置が決まることになる。 In the second inner circumference side welding, as with the outer circumference side coil, a predetermined range (12 portions of about 90 degrees) is divided into equal circumferences according to the number of coil ends on the inner circumference side. The electrode holding guide 43 is disposed on the inner side, and a groove (inner peripheral accommodating recess) is provided in the inner peripheral electrode 83 attached thereto, so that the inner peripheral side conductor end is accommodated in the groove. Similar to the outer peripheral electrode pressing guide 44, the inner peripheral electrode pressing guide 43 is also divided into a plurality of parts so that it can be moved back and forth in the radial direction for loading and unloading products. When the inner circumferential electrode pressing guide 43 advances radially (in the diameter increasing direction), each conductor end is guided to the inner circumferential housing recess of the electrode, and the positions in the radial direction and the rotational direction are determined.
本実施形態の溶接保持装置による溶接は、次のようにして行われる。
製品としての巻線コイル２０を、外周側の導体端部の溶接するために、複数個の外周電極３１、５３、６０にセットする。この際、位置決めリング７４に倣うように、渡り線の径方向の位置を決める。各１２箇所の外周電極押さえガイド４４を、中心方向に前進させて各々の外周側の導体端部の位置を決める。トーチ３４もしくは製品２０を回転させ、各々の外周側導体端部又は渡り線２の溶接を行う。
次に、位置決めリング７４を取り外し、各１２箇所の内周電極押さえガイド４３を伸径させ、各々の内周側導体端部の位置を決める。トーチ３４もしくは製品２０を回転させ、各々の内周側導体端部の又は渡り線２の溶接を行う。外周電極押さえガイド４４及び内周電極押さえガイド４３を後退させた後、製品２０を取り出す。
The welding by the welding holding device of this embodiment is performed as follows.
The winding coil 20 as a product is set on a plurality of outer peripheral electrodes 31, 53, 60 in order to weld the conductor end on the outer peripheral side. At this time, the position of the crossover wire in the radial direction is determined so as to follow the positioning ring 74. The twelve outer peripheral electrode holding guides 44 are advanced in the center direction to determine the positions of the outer peripheral conductor ends. The torch 34 or the product 20 is rotated, and each outer peripheral side conductor end or the crossover wire 2 is welded.
Next, the positioning ring 74 is removed, the inner circumference electrode pressing guides 43 at 12 locations are expanded, and the positions of the inner circumference side conductor end portions are determined. The torch 34 or the product 20 is rotated to weld the end portions of the inner peripheral side conductors or the connecting wires 2. After retracting the outer peripheral electrode pressing guide 44 and the inner peripheral electrode pressing guide 43, the product 20 is taken out.
本発明の一実施形態を上位で表せば、巻線コイルの導体端部と渡り線の端部とを溶接するための溶接保持装置であって、前記導体端部と前記渡り線の端部とを収容して位置決めする外周・内周収容凹部を有する複数個の外周・内周電極と、複数個の外周・内周電極が、それぞれ固定された複数個の外周・内周電極押さえガイドと、前記渡り線の上に載置されて、前記外周・内周収容凹部内に収容された前記導体端部と前記渡り線の端部を接合する外周・内周リング電極と、を具備する溶接保持装置である。 In one embodiment of the present invention, a welding holding device for welding a conductor end of a winding coil and an end of a jumper wire, the conductor end and the end of the jumper wire, A plurality of outer circumference / inner circumference electrodes having outer circumference / inner circumference accommodation recesses, and a plurality of outer circumference / inner circumference electrodes holding guides fixed to the outer circumference / inner circumference electrodes, respectively; Welding and holding comprising: the conductor end portion placed on the crossover wire and housed in the outer circumference / inner circumference housing recess and the outer circumference / inner circumference ring electrode joining the end portion of the crossover wire Device.
２ 渡り線
２０ 巻線コイル
３１、５３、６０ 外周電極
５３−２、６０−２ 外周収容凹部
７２ 外周リング電極
７３ 内周リング電極
８３ 内周電極
８３−２ 内周収容凹部
2 Crossover 20 Winding coil 31, 53, 60 Outer peripheral electrode 53-2, 60-2 Outer peripheral receiving recess 72 Outer peripheral ring electrode 73 Inner peripheral ring electrode 83 Inner peripheral electrode 83-2 Inner peripheral receiving recess
Claims (3)
外周側の前記導体端部と前記渡り線（２）の端部とを収容して位置決めする外周収容凹部（５３−２、６０−２）、渡り線支持舌片（５３−１、６０−１）、及び、前記渡り線（２）に対する当接面（５３−４、６０−４）を有する、複数個の外周電極（３１、５３、６０）と、
複数個の外周電極（３１、５３、６０）が、それぞれ固定された複数個の外周電極押さえガイド（４４）と、
前記渡り線（２）の上に載置されて、前記外周収容凹部（５３−２、６０−２）内に収容された前記導体端部と前記渡り線（２）の端部を接合する外周リング電極（７２）と、を具備する溶接保持装置。 A welding holding device for welding a conductor end of a winding coil (20) and an end of a crossover (2),
Outer peripheral housing recesses (53-2, 60-2) for positioning and positioning the conductor end portion on the outer peripheral side and the end portion of the crossover wire (2), and a crossover support tongue (53-1, 60-1) ) And a plurality of outer peripheral electrodes (31, 53, 60) having contact surfaces (53-4, 60-4) with respect to the crossover wire (2),
A plurality of outer peripheral electrode holding guides (44) each having a plurality of outer peripheral electrodes (31, 53, 60) fixed thereto;
The outer periphery that is placed on the connecting wire (2) and joins the end of the connecting wire (2) and the end of the connecting wire (2) accommodated in the outer periphery receiving recess (53-2, 60-2). And a ring electrode (72).
外周側の前記導体端部と前記渡り線（２）の端部とを収容して位置決めする外周収容凹部（５３−２、６０−２）、渡り線支持舌片（５３−１、６０−１）、及び、前記渡り線（２）に対する当接面（５３−４、６０−４）を有する、複数個の外周電極（３１、５３、６０）と、
複数個の外周電極（３１、５３、６０）が、それぞれ固定された複数個の外周電極押さえガイド（４４）と、
内周側の前記導体端部と前記渡り線（２）端部とを収容して位置決めする内周収容凹部（８３−２）を有する、複数個の内周電極（８３）と、
複数個の内周電極（８３）が、それぞれ固定された複数個の内周電極押さえガイド（４３）と、
前記渡り線（２）の上に載置されて、前記内周収容凹部（８３−２）内に収容された内周側の前記導体端部と前記渡り線（２）の端部を接合する内周リング電極（７３）と、を具備する溶接保持装置。 A welding holding device for welding a conductor end of a winding coil (20) and an end of a crossover (2),
Outer peripheral housing recesses (53-2, 60-2) for positioning and positioning the conductor end portion on the outer peripheral side and the end portion of the crossover wire (2), and a crossover support tongue (53-1, 60-1) ) And a plurality of outer peripheral electrodes (31, 53, 60) having contact surfaces (53-4, 60-4) with respect to the crossover wire (2),
A plurality of outer peripheral electrode holding guides (44) each having a plurality of outer peripheral electrodes (31, 53, 60) fixed thereto;
A plurality of inner peripheral electrodes (83) having an inner peripheral accommodating recess (83-2) for accommodating and positioning the conductor end on the inner peripheral side and the end of the crossover (2);
A plurality of inner peripheral electrodes (83) are respectively fixed to a plurality of inner peripheral electrode pressing guides (43);
It is placed on the crossover wire (2) and joins the end portion of the crossover wire (2) and the end portion of the crossover wire (2) inside the inner periphery housing recess (83-2). An inner ring electrode (73).
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