JP3508209B2 - Manufacturing method of permanent magnet type rotor - Google Patents
Manufacturing method of permanent magnet type rotorInfo
- Publication number
- JP3508209B2 JP3508209B2 JP12446694A JP12446694A JP3508209B2 JP 3508209 B2 JP3508209 B2 JP 3508209B2 JP 12446694 A JP12446694 A JP 12446694A JP 12446694 A JP12446694 A JP 12446694A JP 3508209 B2 JP3508209 B2 JP 3508209B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- permanent magnet
- adhesive
- injection
- injection hole
- 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
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、回転電機の永久磁石形
回転子の製造方法に関する。
【０００２】
【従来の技術】従来、回転子のシャフトの外周に中空円
筒状の永久磁石を固定する場合、例えば図４（ａ）に示
すように、永久磁石１を固定する部分のシャフト２の外
周に硬化剤３と接着剤４を塗布し、次に、内面に接着剤
４を塗布した永久磁石１を、図１（ｂ）に示すように、
シャフト２に挿入し、加熱または常温で接着剤を硬化さ
せて、シャフト２に永久磁石１を固定していた。
【０００３】
【発明が解決しようとする課題】ところが、従来技術で
は、永久磁石１をシャフト２に挿入する時に、シャフト
２の外周と永久磁石１の内周との間の隙間を均一に保持
することが難しく、部分的に接着剤がそぎ落とされて、
隙間に接着剤が十分充填されないという問題があった。
また、シャフト２や永久磁石１に塗布した接着剤４の大
部分が、図４（ｂ）に示すように、永久磁石１の端面か
ら余分の接着剤４’としてはみ出すため、接着剤の消費
量が必要以上に多く、また余分にはみ出した接着剤を拭
き取る作業が必要で、作業工数が多く係るという欠点が
あった。本発明は、シャフトと永久磁石の間の隙間に接
着剤を無駄なく、かつ十分に充填すると共に、作業工数
を低減し、接着作業の自動化を可能にすることを目的と
するものである。
【０００４】
【課題を解決するための手段】上記問題を解決するた
め、本発明は、シャフトの外周に中空円筒状の永久磁石
を固定した永久磁石形回転子の製造方法において、前記
シャフトと前記永久磁石との間の隙間に通じ、かつ前記
シャフトの軸方向に伸びて前記シャフトの一方側に開口
する注入路を設け、かつ、前記注入路を、注入穴と連結
穴とで構成し、かつ、前記注入穴を、前記シャフトの軸
方向に伸びるとともに、シャフトの一方端に開口して構
成し、前記連結穴を、一方端が前記永久磁石の内周面と
前記シャフトの外周面との間に形成された隙間に開口す
るとともに、他方端が前記注入穴に連通するようにシャ
フトの外周面に円周方向にほぼ等間隔に設けて構成し、
前記シャフトの外周に前記永久磁石を挿入した状態で前
記注入穴から接着剤を注入するようにしたものである。
【０００５】
【作用】上記手段により、シャフトと永久磁石との隙間
に接着剤を送り込む注入路をシャフトに設け、一定量の
接着剤を注入器により注入路から供給するので、接着剤
の使用量は、永久磁石とシャフトの寸法および注入路の
寸法でほぼ一定になる。したがって、接着剤の供給量を
注入器によって一定になるように調節することにより、
余分な接着剤がはみ出すことがなくなる。
【０００６】
【実施例】以下、本発明を図に示す実施例について説明
する。図１は本発明の実施例を示す側断面図、図２は回
転子を組み立てる前の状態を示す斜視図である。図にお
いて、５は中空円筒状の永久磁石１とシャフト２を地面
に垂直に立てた状態で位置決めをするための保持治具
で、永久磁石１の外径より僅かに大きい径の磁石保持部
５１とシャフト２の端部を保持するシャフト保持部５２
とからなっている。シャフト２の永久磁石１が挿入され
る外周面には、予め、軸方向に伸びる注入溝２１を円周
方向にほぼ等間隔に複数個設けておく。また、永久磁石
１の内面に硬化剤３を塗布しておく。永久磁石１とシャ
フト２の間に接着剤を塗布する場合、永久磁石１をシャ
フト２に挿入した状態で保持治具５に永久磁石１とシャ
フト２を保持する。次に、シャフト２の上方から各注入
溝２１の開口部に向かって、接着剤４を供給する注入器
６の注入口６１を押し付け、注入器６により圧力を加え
て接着剤４を注入溝２１の中に送り込む。接着剤４は各
注入溝２１の中を通り、永久磁石１とシャフト２との隙
間に入り込み、一定量の接着剤４が充填される。注入器
６を外す時は、注入器６ないの圧力を下げて、接着剤の
供給を止め、シャフト２から外す。接着剤４の使用量は
永久磁石１とシャフト２の寸法および注入溝２１の寸法
が決まればほぼ一定になるので、接着剤４の供給量を注
入器６によって一定になるように調節することにより、
余分な接着剤がはみ出すことがなくなる。
【０００７】図３は他の実施例を示す側断面図で、シャ
フト２には、軸方向に伸びてシャフト２の一方端に開口
する注入穴２２と、一方端が前記永久磁石１の内周面と
前記シャフト２の外周面との間に形成された隙間に開口
するとともに、他方端が前記注入穴２２に連通するよう
にシャフト２の外周面に円周方向にほぼ等間隔に設けて
構成した複数の連絡穴２３を設けてある。永久磁石１と
シャフト２の間に接着剤を塗布する場合、シャフト２の
上方から注入穴２２に注入器６の注入口６１を押し付
け、注入器６により圧力を加えて接着剤４を注入穴２２
の中に送り込む。接着剤４は各注入穴２２の中を通り、
更に連絡穴２３を通って永久磁石１とシャフト２との隙
間に入り込み、一定量の接着剤４が充填される。この場
合も、接着剤４の使用量は永久磁石１とシャフト２の寸
法および注入穴２２、連絡穴２３の寸法が決まればほぼ
一定になるので、接着剤４の供給量を注入器６によって
一定になるように調節することにより、余分な接着剤が
はみ出すことがなくなる。
【０００８】
【発明の効果】以上述べたように、本発明によれば、シ
ャフトに接着剤の通る注入溝や注入穴などの注入路を設
け、一定量の接着剤を注入器により注入路から供給する
ので、シャフトと永久磁石の間の隙間に接着剤を無駄な
く、かつ十分に充填すると共に、拭き取りなどの作業が
少なくなるので作業工数を低減し、接着作業の自動化を
可能にする効果がある。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a permanent magnet type rotor for a rotating electric machine. 2. Description of the Related Art Conventionally, when a hollow cylindrical permanent magnet is fixed to the outer periphery of a rotor shaft, for example, as shown in FIG. As shown in FIG. 1 (b), the permanent magnet 1 in which the curing agent 3 and the adhesive 4 are applied to the outer periphery, and the adhesive 4 is applied to the inner surface,
The permanent magnet 1 was fixed to the shaft 2 by inserting it into the shaft 2 and curing the adhesive at heating or normal temperature. However, in the prior art, when the permanent magnet 1 is inserted into the shaft 2, the gap between the outer periphery of the shaft 2 and the inner periphery of the permanent magnet 1 is maintained uniformly. It is difficult, the adhesive is partially stripped off,
There is a problem that the adhesive is not sufficiently filled in the gap.
Further, most of the adhesive 4 applied to the shaft 2 and the permanent magnet 1 protrudes from the end face of the permanent magnet 1 as an extra adhesive 4 'as shown in FIG. However, there is a drawback that the number of steps is more than necessary, and the work of wiping off the excess adhesive is required, and the number of work steps is increased. An object of the present invention is to fill a gap between a shaft and a permanent magnet with an adhesive without waste and sufficiently, to reduce the number of work steps, and to enable the bonding work to be automated. [0004] In order to solve the above problems, the present invention relates to a method of manufacturing a permanent magnet rotor having a hollow cylindrical permanent magnet fixed to the outer periphery of a shaft. An injection path extending to the gap between the permanent magnet and extending in the axial direction of the shaft and opening on one side of the shaft; and connecting the injection path to an injection hole.
A hole, and the injection hole is formed by an axis of the shaft.
Direction and open at one end of the shaft.
One end of the connection hole is formed with the inner peripheral surface of the permanent magnet.
Open in the gap formed between the shaft and the outer peripheral surface.
And the other end communicates with the injection hole.
It is provided on the outer peripheral surface of the shaft at substantially equal intervals in the circumferential direction,
With the permanent magnet inserted around the outer periphery of the shaft,
The adhesive is injected from the injection hole. With the above means, an injection path for feeding the adhesive into the gap between the shaft and the permanent magnet is provided on the shaft, and a fixed amount of adhesive is supplied from the injection path by the injector. Is substantially constant with the dimensions of the permanent magnet and the shaft and the dimensions of the injection path. Therefore, by adjusting the supply amount of the adhesive so as to be constant by the injector,
Excess adhesive does not protrude. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing a state before assembling a rotor. In the drawing, reference numeral 5 denotes a holding jig for positioning the hollow cylindrical permanent magnet 1 and the shaft 2 in a state of standing vertically on the ground, and a magnet holding portion 51 having a diameter slightly larger than the outer diameter of the permanent magnet 1. And shaft holding portion 52 for holding the end of shaft 2
It consists of A plurality of injection grooves 21 extending in the axial direction are provided in advance on the outer peripheral surface of the shaft 2 where the permanent magnets 1 are inserted at substantially equal intervals in the circumferential direction. The hardener 3 is applied to the inner surface of the permanent magnet 1 in advance. When applying an adhesive between the permanent magnet 1 and the shaft 2, the permanent magnet 1 and the shaft 2 are held by the holding jig 5 with the permanent magnet 1 inserted into the shaft 2. Next, the injection port 61 of the injector 6 for supplying the adhesive 4 is pressed from above the shaft 2 toward the opening of each of the injection grooves 21, and pressure is applied by the injector 6 to apply the adhesive 4 to the injection groove 21. Send in. The adhesive 4 passes through each of the injection grooves 21 and enters the gap between the permanent magnet 1 and the shaft 2, and is filled with a certain amount of the adhesive 4. When removing the injector 6, the pressure of the injector 6 is reduced, the supply of the adhesive is stopped, and the injector 6 is removed. Since the used amount of the adhesive 4 becomes substantially constant if the dimensions of the permanent magnet 1 and the shaft 2 and the size of the injection groove 21 are determined, the supply amount of the adhesive 4 is adjusted by the injector 6 so as to be constant. ,
Excess adhesive does not protrude. FIG. 3 is a side sectional view showing another embodiment. The shaft 2 has an injection hole 22 extending in the axial direction and opening at one end of the shaft 2, and one end having an inner periphery of the permanent magnet 1. Face and
An opening is formed in a gap formed between the shaft 2 and the outer peripheral surface thereof.
So that the other end communicates with the injection hole 22.
Provided on the outer peripheral surface of the shaft 2 at substantially equal intervals in the circumferential direction.
A plurality of communication holes 23 are provided. When applying an adhesive between the permanent magnet 1 and the shaft 2, the injection port 61 of the injector 6 is pressed against the injection hole 22 from above the shaft 2, and pressure is applied by the injector 6 so that the adhesive 4 is injected into the injection hole 22.
Send in. The adhesive 4 passes through each injection hole 22,
Further, it enters the gap between the permanent magnet 1 and the shaft 2 through the communication hole 23 and is filled with a certain amount of the adhesive 4. Also in this case, the amount of the adhesive 4 used becomes substantially constant if the dimensions of the permanent magnet 1 and the shaft 2 and the dimensions of the injection hole 22 and the communication hole 23 are determined. By adjusting so that the excess adhesive does not protrude. As described above, according to the present invention, an injection channel such as an injection groove or an injection hole through which an adhesive passes is provided on a shaft, and a predetermined amount of the adhesive is injected from the injection channel by the injector. Since the adhesive is supplied, the gap between the shaft and the permanent magnet is filled with the adhesive without waste and sufficiently, and the work such as wiping is reduced, reducing the number of work steps and the effect of enabling the automation of the bonding work. is there.
【図面の簡単な説明】
【図１】 本発明の実施例を示す側断面図である。
【図２】 本発明の実施例の組立前の状態を示す斜視図
である。
【図３】 本発明の他の実施例を示す側断面図である。
【図４】 従来例を示す斜視図である。
【符号の説明】
１ 永久磁石、２ シャフト、２１ 注入溝、２２ 注
入穴、２３ 連絡穴、３ 硬化剤、４、接着剤、５ 保
持治具、５１ 磁石保持部、５２ シャフト保持部、６
注入器、６１ 注入口BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing an embodiment of the present invention. FIG. 2 is a perspective view showing a state before assembly according to the embodiment of the present invention. FIG. 3 is a side sectional view showing another embodiment of the present invention. FIG. 4 is a perspective view showing a conventional example. [Description of Signs] 1 permanent magnet, 2 shaft, 21 injection groove, 22 injection hole, 23 connection hole, 3 hardener, 4 adhesive, 5 holding jig, 51 magnet holding section, 52 shaft holding section, 6
Injector, 61 inlet
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02K 15/03 H02K 1/27 H02K 1/28 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H02K 15/03 H02K 1/27 H02K 1/28
Claims (1)
を固定した永久磁石形回転子の製造方法において、前記シャフトと前記永久磁石との間の隙間に通じ、かつ
前記シャフトの軸方向に伸びて前記シャフトの一方側に
開口する注入路を設け、かつ、 前記注入路を、注入穴と連結穴とで構成し、かつ、前記
注入穴を、前記シャフトの内部を軸方向に伸びるととも
に、シャフトの一方端に開口して構成し、前記連結穴
を、一方端が前記永久磁石の内周面と前記シャフトの外
周面との間に形成された隙間に開口するとともに、他方
端が前記注入穴に連通するようにシャフトの外周面に円
周方向にほぼ等間隔に設けて構成し、 前記シャフトの外周に前記永久磁石を挿入した状態で前
記注入穴から接着剤を注入することを特徴とする永久磁
石形回転子の製造方法。(57) [Claim 1] In a method of manufacturing a permanent magnet rotor in which a hollow cylindrical permanent magnet is fixed to an outer periphery of a shaft, a method is provided in which a gap is provided between the shaft and the permanent magnet. ,And
Extending in the axial direction of the shaft, on one side of the shaft
Providing an injection channel that opens, and the injection channel is configured with an injection hole and a connection hole, and
An injection hole extends in the interior of the shaft in the axial direction.
The connecting hole is formed at one end of the shaft.
And one end of the inner surface of the permanent magnet and the outer surface of the shaft.
Open to the gap formed between the peripheral surface and the other
A circle is formed on the outer peripheral surface of the shaft so that the end communicates with the injection hole.
A method of manufacturing a permanent magnet type rotor, wherein the permanent magnet is provided at substantially equal intervals in a circumferential direction, and an adhesive is injected from the injection hole with the permanent magnet inserted into the outer periphery of the shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12446694A JP3508209B2 (en) | 1994-05-13 | 1994-05-13 | Manufacturing method of permanent magnet type rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12446694A JP3508209B2 (en) | 1994-05-13 | 1994-05-13 | Manufacturing method of permanent magnet type rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07312853A JPH07312853A (en) | 1995-11-28 |
| JP3508209B2 true JP3508209B2 (en) | 2004-03-22 |
Family
ID=14886229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12446694A Expired - Fee Related JP3508209B2 (en) | 1994-05-13 | 1994-05-13 | Manufacturing method of permanent magnet type rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3508209B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100601150B1 (en) | 1997-03-28 | 2006-07-13 | 가부시키가이샤 히타치세이사쿠쇼 | Nonvolatile semiconductor storage device and method for manufacturing the same and semiconductor device and method for manufacturing the same |
| JP2001238375A (en) * | 2000-02-22 | 2001-08-31 | Moric Co Ltd | Permanent magnet field motor and fixing method for permanent magnet |
| JP4622402B2 (en) * | 2004-09-13 | 2011-02-02 | 株式会社安川電機 | Magnet adhesion device to rotor surface |
| JP4725442B2 (en) * | 2006-07-10 | 2011-07-13 | トヨタ自動車株式会社 | IPM rotor and method of manufacturing IPM rotor |
| JP5496255B2 (en) | 2012-05-31 | 2014-05-21 | 三菱電機株式会社 | Method for manufacturing rotor of magnet type rotating electrical machine and manufacturing apparatus thereof |
| JP5998733B2 (en) * | 2012-08-08 | 2016-09-28 | アイシン・エィ・ダブリュ株式会社 | Resin filling equipment for rotors for rotating electrical machines |
| US10291090B2 (en) | 2014-06-05 | 2019-05-14 | Samsung Electronics Co., Ltd. | Motor assembly and method for providing the same |
-
1994
- 1994-05-13 JP JP12446694A patent/JP3508209B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07312853A (en) | 1995-11-28 |
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