JPH0556098B2 - - Google Patents
Info
- Publication number
- JPH0556098B2 JPH0556098B2 JP61202339A JP20233986A JPH0556098B2 JP H0556098 B2 JPH0556098 B2 JP H0556098B2 JP 61202339 A JP61202339 A JP 61202339A JP 20233986 A JP20233986 A JP 20233986A JP H0556098 B2 JPH0556098 B2 JP H0556098B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- thickness
- axial end
- groove
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000576 coating method Methods 0.000 claims description 104
- 239000011248 coating agent Substances 0.000 claims description 103
- 239000000843 powder Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000007667 floating Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 230000004323 axial length Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、発電機等の回転電機における鉄心の
絶縁塗膜形成方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for forming an insulating coating film on an iron core in a rotating electric machine such as a generator.
［従来技術及び発明が解決しようとする問題点］
一般に、この種回転電機に組込まれる鉄心に
は、周面部から径方向に向けて歯部が突設されて
おり、該歯部間に形成される溝部にコイルが巻装
されるようになつている。そしてこの様に巻装さ
れるコイルと鉄心との短絡を防止するため、鉄心
の表面に絶縁塗膜が形成されているが、従来、こ
の絶縁塗膜は、溝部の内面と歯部と軸方向端面と
が何れも略同じ塗膜厚となつていたので、第６図
に示す如く、溝部内面から歯部軸方向端面に至る
コーナー部位の塗膜厚がどうしても薄くなつて必
要な絶縁性能を確保することができず、また鉄心
は抜き加工によつて形成するため、コーナー部位
に抜きバリがあつた場合には、該バリを薄くなつ
た絶縁塗膜では覆うことができないこともなり、
絶縁性に劣るという欠点がある。[Prior Art and Problems to be Solved by the Invention] In general, an iron core incorporated in this type of rotating electric machine has teeth protruding from the peripheral surface in the radial direction, and the teeth are formed between the teeth. The coil is wound around the groove. In order to prevent a short circuit between the coil wound in this way and the core, an insulating coating is formed on the surface of the core. Conventionally, this insulating coating was applied to the inner surface of the groove, the teeth, and the Since both end faces had approximately the same coating thickness, as shown in Figure 6, the coating thickness at the corner area from the inner surface of the groove to the axial end face of the tooth inevitably became thinner to ensure the necessary insulation performance. In addition, since the core is formed by punching, if there is a punch burr at the corner, it may not be possible to cover the burr with a thin insulating coating.
It has the disadvantage of poor insulation properties.
そこで、歯部の軸方向端面に塗装される絶縁塗
膜の塗膜厚を、溝部内面の塗膜厚よりも厚くし
て、溝部内面から歯部軸方向端面に至るコーナー
部位の必要塗膜厚を確保することが特開昭56−
6651号において提案されているが、このものは、
鉄心に静電付着される塗膜パウダーに帯電性繊維
微粉片を混合することによつて塗膜厚を制御する
ものであるため、予め塗膜パウダーに帯電性繊維
微粉片を混合する作業が余計に必要になる許り
か、帯電性繊維微粉片の混合が不均一である場合
には塗膜厚にバラツキが生じて塗装精度が著しく
低下するという欠点も有している。 Therefore, the thickness of the insulating coating applied to the axial end surface of the tooth is made thicker than the coating thickness on the inner surface of the groove, and the necessary coating thickness is applied to the corner area from the inner surface of the groove to the axial end surface of the tooth. To ensure that
This is proposed in No. 6651.
Since the coating thickness is controlled by mixing electrostatically charged fiber particles into the coating powder that is electrostatically adhered to the iron core, it is unnecessary to mix the electrostatically charged fiber particles into the coating powder in advance. Although it is necessary for this purpose, it also has the disadvantage that if the mixture of the chargeable fiber particles is non-uniform, the coating thickness will vary and the coating accuracy will be significantly reduced.
［問題を解決するための手段］
本発明は、上記の如き実情に鑑みこれらの欠点
を一掃することができる回転電機における鉄心の
絶縁塗膜形成方法を提供することを目的として創
案されたものであつて、周面部から径方向に向け
て並列状に突設される歯部によつてコイルを巻装
するための溝部が形成される鉄心に、少なくとも
鉄心に塗膜パウダーを静電付着させる工程と、付
着した塗膜パウダーを溶融硬化させる工程とを経
て絶縁塗膜を形成する絶縁塗膜形成方法におい
て、前記歯部の軸方向端面に塗装される絶縁塗膜
の塗膜厚を、溝部内面の塗膜厚よりも厚くして、
溝部内面から歯部軸方向端面に至るコーナー部位
の必要塗膜厚を確保するにあたり、前記付着工程
では、歯部先端部に接当して溝部径方向の開口端
部を塞ぎ、かつ軸方向端が鉄心の軸方向端よりも
外方に突出するようにして治具を組込み、該治具
の突出量に基づいて塗膜パウダーの溝内部に至る
浮遊経路の長さを調整することで歯部軸方向端面
の塗膜パウダー付着量の制御を行うように構成し
たことを特徴とするものである。[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a method for forming an insulating coating film on an iron core in a rotating electric machine, which can eliminate these drawbacks. a step of electrostatically adhering coating powder to at least the core in which a groove for winding the coil is formed by teeth protruding from the peripheral surface in parallel in the radial direction; In the method for forming an insulating coating film, the coating thickness of the insulating coating coated on the axial end face of the tooth portion is set to the inner surface of the groove portion. The coating thickness is thicker than that of
In order to ensure the necessary coating thickness at the corner area from the inner surface of the groove to the axial end surface of the tooth, in the adhesion process, the coating is brought into contact with the tip of the tooth to close the radial opening end of the groove, and the axial end A jig is installed so that the jig protrudes outward from the axial end of the iron core, and the length of the floating path of the coating powder to the inside of the groove is adjusted based on the amount of protrusion of the jig. The present invention is characterized in that it is configured to control the amount of coating powder deposited on the end face in the axial direction.
そして本発明は、この構成によつて、作業工程
を増やしたり、塗装精度を低下させることなくコ
ーナー部位の必要塗膜厚を確保できるようにした
ものである。 With this configuration, the present invention makes it possible to ensure the required coating film thickness at the corner portions without increasing the number of work steps or reducing coating accuracy.
［実施例］
次に、本発明の一実施例を図面に基づいて説明
する。図面において、１は回転電機の一例である
車両用発電機であつて、該発電機１は、コア軸２
に圧入されるロータコア３、該ロータコア３に内
装されるコイルボビン４、コイルボビン４に巻装
されるロータコイル５、ロータコア３の外周に対
設される後述のステータコア６、該ステータコア
６に巻装されるステータコイル７、スリツプリン
グ８に弾圧状に摺接する刷子９、発電された交流
電流を整流するレクチフアイア１０等の各部材に
よつて構成されていることは何れも従来通りであ
る。[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a vehicle generator which is an example of a rotating electric machine, and the generator 1 has a core shaft 2.
A rotor core 3 is press-fitted into the rotor core 3, a coil bobbin 4 is installed inside the rotor core 3, a rotor coil 5 is wound around the coil bobbin 4, a stator core 6, which will be described later, is provided opposite to the outer periphery of the rotor core 3, and a stator core 6 is wound around the stator core 6. The stator coil 7, the brush 9 that slides in elastic contact with the slip ring 8, the rectifier 10 that rectifies the generated alternating current, and other members are all conventional.
前記ステータコア６は、所定形状に打ち抜いた
板体の複数枚の積層構造によつて形成されるもの
であるが、ステータコア６は、その外周縁部６ａ
と、該外周縁部６ａから内周径方向に向けて突設
された歯部６ｂとによつて形成されている。そし
て隣接する歯部６ｂ間に形成される溝部６ｃには
ステータコイル７が巻装されることになる。ここ
で発電機１は、三相のステータコイル方式を採用
しているため、各相のコイルは、それぞれ三個の
歯部６ｂおきに巻装されるようになつている。 The stator core 6 is formed of a laminated structure of a plurality of plates punched into a predetermined shape.
and a toothed portion 6b protruding from the outer peripheral edge portion 6a toward the inner circumferential radial direction. The stator coil 7 is wound around the groove 6c formed between the adjacent teeth 6b. Since the generator 1 employs a three-phase stator coil system, the coils of each phase are wound around every three teeth 6b.
このステータコア６には絶縁塗膜１１が塗装さ
れているが、本実施例で採用する塗装方法は、静
電クラウド法を採用している。即ちこの静電クラ
ウド法は、第３図に示す如く、塗装室１２に治具
１３を用いて被塗装部材（本発明ではステータコ
ア６自身）Ｍを据付け、さらに塗装室１２に多孔
質板１４に塗装用のパウダー（粉末）層１５を形
成しておき、被塗装部材Ｍ自身と多孔質板側の電
極板１６との間に高電圧を印加（被塗装部材Ｍは
プラス、電極板１６はマイナス）し、この状態で
塗装室１２に、パウダー層１５側から被塗装部材
Ｍに向けて空気を流す。すると電極板１６によつ
てマイナスに帯電した空気は、多孔質板１４を通
過し、パウダー層１５を通ることによつて塗装パ
ウダーと静電的に結合し、これが反対極側の被塗
装部材Ｍに引き寄せられる。そして塗装パウダー
は塗装装部材Ｍに付着し、空気は排出口１７から
排出されることとなる。そして必要量の塗装パウ
ダーが被塗装部材Ｍに付着したら、不要な塗装パ
ウダーを落し、必要においてこの作業を数度（本
実施例では三度）繰り返した後、高周波等の手段
で塗装パウダーを溶融硬化させることによつて絶
縁塗膜１１が形成され、塗膜加工が成されるもの
である。そして本発明のステータコア６において
も、これと同様の加工方法によつて絶縁塗装が成
されるようになつている。 This stator core 6 is coated with an insulating coating film 11, and the coating method employed in this embodiment is an electrostatic cloud method. That is, in this electrostatic cloud method, as shown in FIG. A powder layer 15 for painting is formed, and a high voltage is applied between the member M to be painted and the electrode plate 16 on the porous plate side (the member M to be painted is positive, the electrode plate 16 is negative). ), and in this state, air is flowed into the coating chamber 12 from the powder layer 15 side toward the member M to be coated. Then, the air negatively charged by the electrode plate 16 passes through the porous plate 14 and electrostatically combines with the coating powder by passing through the powder layer 15, and this is transferred to the member M to be coated on the opposite pole side. drawn to. Then, the coating powder adheres to the coating member M, and the air is discharged from the discharge port 17. When the required amount of coating powder has adhered to the member M to be coated, remove unnecessary coating powder, repeat this process several times (three times in this example) if necessary, and then melt the coating powder using means such as high frequency. By curing, an insulating coating film 11 is formed and coating processing is performed. The stator core 6 of the present invention is also coated with an insulating coating using a similar processing method.
ここでステータコア６においては、その外周面
Ａ、歯部６ｂの軸方向端面Ｂ、並びに溝部６ｃの
内面Ｃにそれぞれ絶縁塗膜を塗装する必要がある
（歯部６ｂの先端面Ｄは不要）が、Ｂ面を最も厚
く塗装するために次のような配慮が成されてい
る。即ち、治具１３を、歯部６ｂの内周面Ｄに内
接して溝部６ｃの径方向開口端部を塞ぎ、かつ軸
方向端がステータコア６の軸方向端よりも外方に
突出するよう円柱状とし、これによつてマイナス
となつた塗膜パウダーが溝部６ｃ内へ至る浮遊経
路を長くして、塗装パウダーが、Ｃ面よりもＢ面
に多量に付着するように設定されているが、さら
にその付着量を制御するため、治具１３の軸方向
長さ（円柱高さ）T2をステータコア６の軸方向
長さ（厚さ）T1に対して所定の大きさとなるよ
うに設定する。この設定は塗装条件によつて種々
異なるが、ここで一例として、ステータコアの軸
方向長さT1が26mmの場合、治具１３の軸方向長
さT2を略40mmと設定しておく。そしてこの値よ
りも治具１３の軸方向長さT2が大きくなるとＣ
面の塗膜厚t1が薄くなり、逆に小さくなるとＣ面
の塗膜厚t1が厚くなり、実験的にはT1／T2＝0.5
〜0.7程度の範囲で設定することが好ましいこと
が確認されている。そして実施例では前記塗装工
程を三度繰り返すが、これによつて塗膜厚は、Ａ
面で100〜200μｍ、Ｂ面で350〜450μｍ、Ｃ面で
200〜300μｍとなるように制御される。そしてこ
の様に、歯部６ｂにおける塗膜厚を、Ｂ面がＣ面
と塗膜厚t1よりも厚い塗膜厚t2（t2＞t1）となるよ
うに設定することによつて、Ｂ面とＣ面との間の
コーナー部位６ｄの塗膜厚t3は厚くなるように制
御され、所望の塗膜厚になるように設定されてい
る。 Here, in the stator core 6, it is necessary to apply an insulating coating to the outer circumferential surface A, the axial end surface B of the tooth portion 6b, and the inner surface C of the groove portion 6c (the tip surface D of the tooth portion 6b is not required). The following considerations have been made to coat side B the thickest. That is, the jig 13 is inscribed in the inner circumferential surface D of the tooth portion 6b to close the radial opening end of the groove portion 6c, and is circularly shaped such that the axial end thereof protrudes outward beyond the axial end of the stator core 6. It is designed to have a columnar shape, thereby lengthening the floating path for the negative paint film powder to reach the inside of the groove 6c, so that a larger amount of paint powder adheres to the B side than the C side. Furthermore, in order to control the amount of adhesion, the axial length (cylindrical height) T 2 of the jig 13 is set to a predetermined size with respect to the axial length (thickness) T 1 of the stator core 6. . This setting varies depending on the coating conditions, but as an example, if the axial length T 1 of the stator core is 26 mm, the axial length T 2 of the jig 13 is set to approximately 40 mm. If the axial length T2 of the jig 13 is larger than this value, C
When the coating thickness t 1 on the surface becomes thinner, and vice versa, the coating thickness t 1 on the C surface becomes thicker, and experimentally, T 1 /T 2 = 0.5
It has been confirmed that it is preferable to set it within a range of about 0.7. In the example, the above-mentioned painting process is repeated three times, whereby the coating thickness becomes A
100~200μm on side B, 350~450μm on side C,
The thickness is controlled to be 200 to 300 μm. In this way, by setting the coating thickness on the tooth portion 6b so that the coating thickness t 2 (t 2 > t 1 ) on the B side and the C side is thicker than the coating thickness t 1 . , the coating film thickness t3 at the corner portion 6d between the B side and the C side is controlled to be thick and set to a desired coating thickness.
叙述の如く構成された本発明の実施例におい
て、ステータコア６は、コーナー部位６ｄの塗膜
厚t3が所望の厚さとなるように制御されているの
で、該部位で絶縁性が損われて、ステータコイル
７とステータコア６との短絡が生じてしまうこと
を確実に防止することができる。即ち、絶縁塗膜
１１は、溝部６ｃについては薄い塗膜厚t1（この
塗膜厚は、溝部６ｃにおいて通常必要とされる厚
さ）であるが、歯部６ｂの軸方向端面の塗膜厚t2
が厚くなつていて塗膜面を盛り上げた構造となつ
ているため、コーナー部位６ｄの塗膜厚t3は、従
来の如く薄くなつてしまうことがなく所望の厚さ
に維持されることになる。この結果、コーナー部
位６ｄにおいても必要とされる厚い絶縁塗膜１１
が形成されることとなつて、該部での絶縁性が頗
る向上することになる。またステータコア６成形
時の抜きバリＸが仮令あつても、このバリＸの突
出方向は、歯部の外側面方向であるため、該バリ
Ｘは外側面に塗装した肉厚な絶縁塗膜によつて確
実に覆われることとなり、もつてステータコイル
７とステータコア６との絶縁性が著しく改善され
ることになる。しかもコーナー部位６ｄの塗膜厚
t3を制御するため、歯部６ｂの軸方向端面の塗膜
厚t2を厚くしたが、ステータコイル７はステータ
コア６の軸方向端面から外方に突出するように巻
装されていて、他部材との干渉はないから、歯部
６ｂの軸方向端面の塗膜厚t2を厚くしたとしても
何ら支障はないものである。 In the embodiment of the present invention constructed as described above, the stator core 6 is controlled so that the coating film thickness t3 at the corner portion 6d is a desired thickness, so that the insulation property is impaired at that portion. It is possible to reliably prevent a short circuit between stator coil 7 and stator core 6 from occurring. That is, the insulating coating film 11 has a thin coating thickness t 1 for the groove portion 6c (this coating thickness is the thickness normally required for the groove portion 6c), but the coating film on the axial end surface of the tooth portion 6b Thickness t 2
is thicker and has a structure in which the coating surface is raised, so the coating thickness t3 at the corner portion 6d is maintained at the desired thickness instead of becoming thinner as in the conventional case. . As a result, the thick insulating coating 11 is also required at the corner portion 6d.
As a result, the insulation at this portion is significantly improved. Furthermore, even if there is a burr X removed during molding of the stator core 6, the protruding direction of the burr X is toward the outer surface of the tooth, so the burr X is covered with a thick insulating coating coated on the outer surface. As a result, the insulation between the stator coil 7 and the stator core 6 is significantly improved. Moreover, the coating thickness at the corner part 6d
In order to control t 3 , the coating thickness t 2 on the axial end surface of the toothed portion 6b is increased, but the stator coil 7 is wound so as to protrude outward from the axial end surface of the stator core 6. Since there is no interference with other members, there is no problem even if the coating film thickness t2 on the axial end face of the tooth portion 6b is increased.
この様に本発明にあつては、歯部６ｂの軸方向
端面に塗装される絶縁塗膜の塗膜厚t2を、溝部６
ｃ内面の塗膜厚t1よりも厚くし、溝部６ｃ内面か
ら歯部６ｂの軸方向端面に至るコーナー部位６ｄ
の必要塗膜厚t3を確保するものであるが、塗膜パ
ウダーを付着させる工程では、歯部６ｂの内周面
Ｄに内接して溝部６ｃの径方向開口端部を塞ぎ、
かつ軸方向端がステータコア６の軸方向端よりも
外方に突出する円柱状の治具１３にステータコア
６を組付け、これによつて塗膜パウダーが溝部６
ｃ内へ至る浮遊経路を長くして、歯部６ｂ軸方向
端面の塗膜厚t2を厚くし、しかも前記治具１３の
軸方向長さT2に基づいて歯部６ｂ軸方向端面の
塗膜厚t2を制御している。即ち、静電付着される
塗膜パウダーに帯電性繊維微粉片を混合すること
に基づいて塗膜厚を制御するものの様に、予め塗
膜パウダーに帯電性繊維微粉片を混合するような
余計な作業を行うことなく塗膜厚を制御できる許
りか、帯電性繊維微粉片の混合不均一に基づいて
塗膜厚にバラツキが生じるような不都合のない高
精度な絶縁塗膜形成を行うことができる。 In this way, in the present invention, the coating thickness t 2 of the insulating coating coated on the axial end face of the tooth portion 6b is set to
The corner portion 6d is made thicker than the inner surface coating thickness t1 and extends from the inner surface of the groove portion 6c to the axial end surface of the tooth portion 6b.
In order to ensure the required coating film thickness t3 , in the step of adhering the coating powder, the powder is inscribed in the inner circumferential surface D of the tooth portion 6b and closes the radial opening end of the groove portion 6c.
The stator core 6 is assembled to a cylindrical jig 13 whose axial end protrudes outward from the axial end of the stator core 6, thereby allowing the coating powder to flow into the groove 6.
The floating path leading to the inside of the tooth portion 6b is lengthened to increase the coating thickness t2 on the axial end surface of the tooth portion 6b, and the coating thickness on the axial end surface of the tooth portion 6b is The film thickness t2 is controlled. In other words, the coating film thickness is controlled by mixing electrostatically deposited coating powder with electrostatically charged fiber particles. Because the coating thickness can be controlled without any additional work, it is possible to form a highly accurate insulating coating without the inconvenience of variations in coating thickness due to non-uniform mixing of the electrostatically charged fiber particles. .
［作用効果］
以上要するに、本発明は叙述の如く構成された
ものであるから、歯部の軸方向端面に塗装される
絶縁塗膜の塗膜厚を、溝部内面の塗膜厚よりも厚
くして、溝部内面から歯部軸方向端面に至るコー
ナー部位の必要塗膜厚を確保するものでありなが
ら、鉄心に塗膜パウダーを付着させつ工程におい
て、歯部先端面に接当して溝部径方向の開口端部
を塞ぎ、かつ軸方向端が鉄心の軸方向端よりも外
方に突出するようにして治具を組込み、該治具の
突出量に基づいて塗膜パウダーの溝内部に至る浮
遊経路の長さを調整することで歯部軸方向端面の
塗膜パウダー付着量を制御しており、従つて、静
電付着させる塗膜パウダーに帯電性繊維微粉片を
混合することによつて塗膜厚を制御する従来のも
のの様に、予め塗膜パウダーに帯電性繊維微粉片
を混合する作業が余計に必要になつたり、帯電性
繊維微粉片の混合不均一に基づいて塗装精度が著
しく低下するような不都合を悉皆解消できること
になり、このため、工程数が少なく、しかも塗装
精度が良好な優れた絶縁塗膜形成方法を提供でき
ることになる。[Operation and Effect] In summary, since the present invention is configured as described above, the thickness of the insulating coating coated on the axial end face of the tooth portion is made thicker than the coating thickness on the inner surface of the groove portion. This method ensures the necessary coating thickness at the corner from the inner surface of the groove to the axial end surface of the tooth, but in the process of applying coating powder to the core, it comes into contact with the tip surface of the tooth and reduces the diameter of the groove. A jig is installed so that the opening end in the direction is closed and the axial end protrudes outward from the axial end of the iron core, and the jig is inserted into the groove of the coating powder based on the amount of protrusion of the jig. The amount of coating powder deposited on the axial end face of the teeth is controlled by adjusting the length of the floating path. Therefore, by mixing electrostatically deposited coating powder with chargeable fiber particles, Unlike conventional methods that control the coating film thickness, it is necessary to mix the electrostatic fiber particles into the coating powder in advance, and the coating accuracy is significantly reduced due to uneven mixing of the electrostatic fiber particles. This makes it possible to eliminate all inconveniences such as deterioration, and therefore it is possible to provide an excellent method for forming an insulating coating film with a small number of steps and good coating accuracy.
図面は、本発明に係る回転電機における鉄心の
絶縁塗膜形成方法の実施例を示したものであつ
て、第１図は車両用発電機の一部切欠き正面図、
第２図はステータコイルの正面図、第３図は塗装
装置の概略説明図、第４図Ｘ，Ｙはそれぞれ塗装
治具に取付けた状態を示す平面図、断面図、第５
図は本発明を実施した歯部の塗膜厚状態を示す断
面図、第６図は従来の塗膜厚状態を示す断面図で
ある。
図中、１は車両用発電機、６はステータコア、
７はステータコイル、１１は絶縁塗膜である。
The drawings show an embodiment of the method for forming an insulating coating film on an iron core in a rotating electric machine according to the present invention, and FIG. 1 is a partially cutaway front view of a vehicle generator;
Fig. 2 is a front view of the stator coil, Fig. 3 is a schematic explanatory diagram of the coating device, Fig. 4 is a plan view and cross-sectional view showing the state in which it is installed on the coating jig, Fig. 5 is
The figure is a cross-sectional view showing the state of the coating film thickness on the tooth portion according to the present invention, and FIG. 6 is a cross-sectional view showing the state of the conventional coating film thickness. In the figure, 1 is a vehicle generator, 6 is a stator core,
7 is a stator coil, and 11 is an insulating coating film.
Claims (1)
る歯部によつてコイルを巻装するための溝部が形
成される鉄心に、少なくとも鉄心に塗膜パウダー
を静電付着させる工程と、付着した塗膜パウダー
を溶融硬化させる工程とを経て絶縁塗膜を形成す
る絶縁塗膜形成方法において、前記歯部の軸方向
端面に塗装される絶縁塗膜の塗膜厚を、溝部内面
の塗膜厚よりも厚くして、溝部内面から歯部軸方
向端面に至るコーナー部位の必要塗膜厚を確保す
るにあたり、前記付着工程では、歯部先端部に接
当して溝部径方向の開口端部を塞ぎ、かつ軸方向
端が鉄心の軸方向端よりも外方に突出するように
して治具を組込み、該治具の突出量に基づいて塗
膜パウダーの溝内部に至る浮遊経路の長さを調整
することで歯部軸方向端面の塗膜パウダー付着量
の制御を行うように構成したことを特徴とする回
転電機における鉄心の絶縁塗膜形成方法。1. A step of electrostatically attaching coating powder to at least an iron core in which a groove for winding a coil is formed by teeth protruding in parallel from the peripheral surface in a radial direction; In the method for forming an insulating coating film in which an insulating coating film is formed through a step of melting and hardening the adhered coating powder, the thickness of the insulating coating coated on the axial end face of the tooth portion is set to the thickness of the coating on the inner surface of the groove portion. In order to ensure the necessary coating thickness at the corner area from the inner surface of the groove to the axial end surface of the tooth by making the coating thicker than the coating thickness, in the above-mentioned adhesion process, the coating is applied to the tip of the tooth and the opening end of the groove in the radial direction. A jig is installed so that the axial end protrudes outward from the axial end of the iron core, and the length of the floating path of the coating powder to the inside of the groove is determined based on the amount of protrusion of the jig. 1. A method for forming an insulating coating film on an iron core in a rotating electric machine, characterized in that the amount of coating powder deposited on the axial end face of a tooth portion is controlled by adjusting the thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20233986A JPS6359742A (en) | 1986-08-28 | 1986-08-28 | Stator core insulating structure of generator for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20233986A JPS6359742A (en) | 1986-08-28 | 1986-08-28 | Stator core insulating structure of generator for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6359742A JPS6359742A (en) | 1988-03-15 |
| JPH0556098B2 true JPH0556098B2 (en) | 1993-08-18 |
Family
ID=16455902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20233986A Granted JPS6359742A (en) | 1986-08-28 | 1986-08-28 | Stator core insulating structure of generator for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6359742A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0910492A (en) * | 1995-06-26 | 1997-01-14 | Sanka Kogyo Kk | System unit for washing machine and clothes dryer |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01255452A (en) * | 1988-04-04 | 1989-10-12 | Toshiba Corp | Stator for rotary electric machine |
| JP2657144B2 (en) * | 1992-12-16 | 1997-09-24 | 三洋電機株式会社 | Small motor |
| JP2565351Y2 (en) * | 1993-02-23 | 1998-03-18 | 株式会社三協精機製作所 | Magnetic disk drive |
| JP3466837B2 (en) * | 1996-11-05 | 2003-11-17 | 株式会社田中製作所 | Motor core and motor provided with the same |
| JP2007020294A (en) * | 2005-07-07 | 2007-01-25 | Sumitomo Electric Ind Ltd | Stator core, motor stator, motor, and method of manufacturing stator core |
| JP2007312564A (en) * | 2006-05-22 | 2007-11-29 | Denso Corp | Stator of rotary electric machine |
| JP2010183839A (en) * | 2010-05-26 | 2010-08-19 | Denso Corp | Stator of rotating electrical machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566651A (en) * | 1979-06-26 | 1981-01-23 | Toshiba Corp | Manufacture of insulated iron core for electric machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49109101U (en) * | 1973-01-11 | 1974-09-18 |
-
1986
- 1986-08-28 JP JP20233986A patent/JPS6359742A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566651A (en) * | 1979-06-26 | 1981-01-23 | Toshiba Corp | Manufacture of insulated iron core for electric machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0910492A (en) * | 1995-06-26 | 1997-01-14 | Sanka Kogyo Kk | System unit for washing machine and clothes dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6359742A (en) | 1988-03-15 |
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