JP2003102141A - Ac servo motor - Google Patents

Ac servo motor

Info

Publication number
JP2003102141A
JP2003102141A JP2001291738A JP2001291738A JP2003102141A JP 2003102141 A JP2003102141 A JP 2003102141A JP 2001291738 A JP2001291738 A JP 2001291738A JP 2001291738 A JP2001291738 A JP 2001291738A JP 2003102141 A JP2003102141 A JP 2003102141A
Authority
JP
Japan
Prior art keywords
load side
frame
side bracket
stator
attached
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2001291738A
Other languages
Japanese (ja)
Other versions
JP4592050B2 (en
Inventor
Atsuo Ikeda
敦夫 池田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yaskawa Electric Corp filed Critical Yaskawa Electric Corp
Priority to JP2001291738A priority Critical patent/JP4592050B2/en
Publication of JP2003102141A publication Critical patent/JP2003102141A/en
Application granted granted Critical
Publication of JP4592050B2 publication Critical patent/JP4592050B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Motor Or Generator Frames (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an AC servo motor, in which heat generated at a stator is less likely to be transmitted to a rotary detector. SOLUTION: In the AC servo motor 1, having a frame 3 of cylindrical metal, an external frame 2 comprising a load side bracket attached to the axial direction end part of the frame 3 and a reverse load side bracket 5 respectively, a stator core 7 attached to the inner face of the frame 3, a stator 6 comprising the stator winding 8 wound around the stator core 7, a rotor 9 which is rotatably supported by the load side bracket 4 and the reverse load side bracket 5 via bearings 10, 11, and a rotating detector 16 attached to the reverse load side bracket 5, the frame 3 is made of aluminum and the stator 6 is molded with resin 15, so as to cover the stator winding 8; and the resin 15 is interposed between the reverse load side end part of the frame 3 and the reverse load side bracket 5.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、反負荷側ブラケッ
トに回転検出器を取り付けたACサーボモータに関する
ものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC servomotor having a rotation detector attached to an anti-load side bracket.

【0002】[0002]

【従来の技術】従来のACサーボモータは、筒状をした
フレームと、前記フレームの軸方向端部にそれぞれ取り
付けた負荷側ブラケットと反負荷側ブラケットとからな
る外枠と、前記フレームの内面に取り付けた固定子コア
と、前記固定子コアに巻装した固定子巻線とからなる固
定子と、前記負荷側ブラケットと反負荷側ブラケットに
軸受を介して回転自在に支持した回転子と、前記反負荷
側ブラケットに取り付けた回転検出器とを備えて構成さ
れていた。
2. Description of the Related Art A conventional AC servomotor has a tubular frame, an outer frame composed of a load side bracket and an anti-load side bracket attached to axial end portions of the frame, and an inner surface of the frame. A stator comprising an attached stator core and a stator winding wound around the stator core; a rotor rotatably supported on the load-side bracket and the anti-load-side bracket via bearings; And a rotation detector attached to the anti-load side bracket.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、このよ
うな従来のACサーボモータにおいては、発熱体である
固定子を内周面に嵌合したフレームに直接反負荷側ブラ
ケットを取り付けているので、固定子からの発生熱がフ
レームと反負荷側ブラケットを通って、熱に弱い回転検
出器に伝わりやすいという問題があった。本発明は、こ
のような問題を解消するためになされたもので、固定子
で発生した熱が回転検出器に伝わりにくいACサーボモ
ータを提供することを目的とするものである。
However, in such a conventional AC servomotor, since the anti-load side bracket is directly attached to the frame in which the stator, which is a heating element, is fitted to the inner peripheral surface, the bracket is fixed. There is a problem that heat generated from the child easily passes through the frame and the anti-load side bracket to the rotation detector, which is weak against heat. The present invention has been made to solve such a problem, and an object of the present invention is to provide an AC servomotor in which heat generated in a stator is less likely to be transmitted to a rotation detector.

【0004】[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、筒状をした金属製のフレームと、前記フ
レームの軸方向端部にそれぞれ取り付けた負荷側ブラケ
ットと反負荷側ブラケットとからなる外枠と、前記フレ
ームの内面に取り付けた固定子コアと、前記固定子コア
に巻装した固定子巻線とからなる固定子と、前記負荷側
ブラケットと反負荷側ブラケットに軸受を介して回転自
在に支持した回転子と、前記反負荷側ブラケットに取り
付けた回転検出器とを有するACサーボモータにおい
て、前記フレームをアルミニウム製とし、固定子巻線を
覆うようにして固定子を樹脂でモールドするとともに、
フレームの反負荷側端部と反負荷側ブラケット間に樹脂
を介在させるようにしたものである。
In order to solve the above-mentioned problems, the present invention provides a tubular metal frame, a load side bracket and an anti-load side bracket which are respectively attached to axial end portions of the frame. An outer frame, a stator core attached to the inner surface of the frame, a stator comprising a stator winding wound around the stator core, and a bearing on the load side bracket and the anti-load side bracket. In an AC servomotor having a rotatably supported rotor and a rotation detector attached to the anti-load side bracket, the frame is made of aluminum and the stator is made of resin so as to cover the stator winding. While molding
Resin is interposed between the end of the frame opposite to the load and the bracket opposite to the load.

【0005】[0005]

【発明の実施の形態】以下、本発明の実施例を図に基づ
いて説明する。 [第1の実施例]図1は本発明の第1の実施例における
ACサーボモータを示す斜視図で、内部を断面で示して
いる。図1において、1はACサーボモータ、2は外枠
で、筒状をしたアルミニウム製のフレーム3と、前記フ
レーム3の負荷側の軸方向端部側に配置した負荷側ブラ
ケット4と、前記フレーム3の反負荷側の軸方向端部側
に配置した反負荷側ブラケット5とからなっている。6
は固定子で、前記フレーム2の内面に面接触で熱伝達良
好に取り付けた固定子コア7と、前記固定子コア7に巻
装した固定子巻線8とからなっている。9は回転子で、
前記負荷側ブラケット4と反負荷側ブラケット5に軸受
10,11を介して回転自在に支持した回転軸12と、
前記回転軸12の外周部に回転子ヨーク13を介して、
あるいは回転軸12の外周部に直接取り付けたマグネッ
ト14とからなっている。15は前記固定子6を、固定
子巻線8を覆うようにモールドした樹脂で、反負荷側部
は、前記フレーム3と反負荷側ブラケット5との間に介
在し、フレーム3の反負荷側端部に反負荷側ブラケット
5を間接的に取り付けさせている。16は前記反負荷側
ブラケット5の反負荷側端部に取り付けた回転検出器
で、17は検出器カバーである。本発明は、このよう
に、外枠2を、アルミニウム製のフレーム3と、負荷側
ブラケット4および反負荷側ブラケット5と、樹脂15
とで構成し、フレーム3と負荷側ブラケット4は、固定
子巻線8からの熱の伝達が良好となるように直接連結
し、フレーム3と反負荷側ブラケット5は、固定子巻線
8からの熱が反負荷側ブラケット5に伝達されにくいよ
うに間に樹脂15を介して連結しているので、固定子巻
線8からの発生熱は、フレーム3から負荷側ブラケット
4には良好に伝達されるが、フレーム3から反負荷側ブ
ラケット5へは熱が伝達されにくくなる。したがって、
反負荷側ブラケット5に取り付けている回転検出器16
は熱の影響を受けにくく良好に作動する。また、金属製
のフレーム3よりは熱伝導率は低いが、空気よりは格段
に熱伝導率が高い樹脂15で固定子6をモールドしてい
るので、従来は固定子巻線8と固定子コア7との間で形
成されていた空気の隙間が、モールドされた樹脂15で
充填されることになり、固定子巻線8から固定子コア7
への熱伝導が良くなり、放熱効率が高くなって冷却性能
が向上する。さらに、固定子6を樹脂15でモールドし
ているので、耐振性と静音性が向上する。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] FIG. 1 is a perspective view showing an AC servomotor according to a first embodiment of the present invention, showing the inside in section. In FIG. 1, reference numeral 1 is an AC servo motor, 2 is an outer frame, a cylindrical aluminum frame 3, a load side bracket 4 arranged on the load side axial end side of the frame 3, and the frame. 3 and an anti-load side bracket 5 arranged on the end side in the axial direction on the anti-load side. 6
Is a stator, which is composed of a stator core 7 mounted on the inner surface of the frame 2 by surface contact so as to favorably transfer heat, and a stator winding 8 wound around the stator core 7. 9 is a rotor,
A rotating shaft 12 rotatably supported on the load side bracket 4 and the anti-load side bracket 5 via bearings 10 and 11;
Through the rotor yoke 13 on the outer peripheral portion of the rotary shaft 12,
Alternatively, the magnet 14 is directly attached to the outer peripheral portion of the rotary shaft 12. Reference numeral 15 denotes a resin in which the stator 6 is molded so as to cover the stator winding 8. The anti-load side portion is interposed between the frame 3 and the anti-load side bracket 5, and the anti-load side portion of the frame 3 is provided. The anti-load side bracket 5 is indirectly attached to the end portion. Reference numeral 16 is a rotation detector attached to the end portion of the anti-load side bracket 5 on the anti-load side, and 17 is a detector cover. As described above, according to the present invention, the outer frame 2 includes the aluminum frame 3, the load-side bracket 4, the anti-load-side bracket 5, and the resin 15.
The frame 3 and the load side bracket 4 are directly connected to each other so that the heat transfer from the stator winding 8 is good, and the frame 3 and the anti-load side bracket 5 are connected from the stator winding 8 to each other. The heat generated from the stator winding 8 is satisfactorily transmitted from the frame 3 to the load-side bracket 4 because the heat of the stator winding 8 is connected to the anti-load-side bracket 5 via the resin 15 so that the heat is not transmitted. However, heat is less likely to be transferred from the frame 3 to the anti-load side bracket 5. Therefore,
Rotation detector 16 attached to the anti-load side bracket 5
Is less susceptible to heat and works well. Further, since the stator 6 is molded with the resin 15 which has a lower thermal conductivity than the metal frame 3 but has a much higher thermal conductivity than air, conventionally, the stator winding 8 and the stator core are The air gap formed between the stator winding 8 and the stator core 7 is filled with the molded resin 15.
The heat conduction to the body is improved, the heat dissipation efficiency is increased, and the cooling performance is improved. Further, since the stator 6 is molded with the resin 15, the vibration resistance and the quietness are improved.

【0006】[0006]

【発明の効果】以上述べたように、本発明によれば、次
のような効果がある。 (1)フレームを、熱伝導が良好で、かつ軽量であるアル
ミ製で構成するとともに、固定子から熱が良好に伝達さ
れてくる必要のある負荷側ブラケットは、前記フレーム
と直接連結し、反対に固定子からの熱が伝わらないほう
がよい反負荷側ブラケットは、フレームに比べると熱伝
導が悪い樹脂を介してフレームに連結しているので、固
定子が発生する熱の流れを都合よく制御し、熱に弱い回
転検出器を保護することができる。 (2)金属製フレームよりは熱伝導率は低いが、空気より
は格段に熱伝導率が高い樹脂で固定子をモールドしてい
るので、従来は固定子コイルと固定子コアとの間で形成
されていた空気の隙間がモールド樹脂で充填されること
になり、固定子コイルから固定子コアへの熱伝導が良く
なり、放熱効率が高くなって冷却性能が向上する。 (3)固定子を樹脂でモールドすることにより、高耐振性
と静音性とを得ることができる。
As described above, the present invention has the following effects. (1) The frame is made of aluminum, which has good heat conduction and is lightweight, and the load side bracket that is required to transmit heat well from the stator is directly connected to the frame and It is better that the heat from the stator is not transferred to the bracket.The bracket on the anti-load side is connected to the frame via a resin that has poor heat conduction compared to the frame, so the heat flow generated by the stator can be controlled conveniently. Can protect the rotation detector, which is sensitive to heat. (2) The heat conductivity is lower than that of a metal frame, but the stator is molded with a resin that has a significantly higher heat conductivity than air, so conventionally it was formed between the stator coil and the stator core. The gaps of the air thus formed are filled with the mold resin, the heat conduction from the stator coil to the stator core is improved, the heat radiation efficiency is increased, and the cooling performance is improved. (3) By molding the stator with resin, high vibration resistance and quietness can be obtained.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施の形態を示すモールドモータの構
造図である。
FIG. 1 is a structural diagram of a molded motor showing an embodiment of the present invention.

【図2】回転検出器側ブラケットをモールドで一体成形
したモールドモータの構造図である。
FIG. 2 is a structural diagram of a molded motor in which a rotation detector side bracket is integrally molded with a mold.

【符号の説明】[Explanation of symbols]

1 ACサーボモータ、 2 外枠、 3 フレーム、 4 負荷側ブラケット、 5 反負荷側ブラケット 6 固定子、 7 固定子コア、 8 固定子巻線、 9 回転子、 10 軸受、 11 軸受、 12 回転軸、 13 回転子ヨーク、 14 マグネット、 15 樹脂、 16 回転検出器、 17 検出器カバー 1 AC servo motor, 2 outer frame, 3 frames, 4 Load side bracket, 5 Anti-load side bracket 6 stator, 7 stator core, 8 stator winding, 9 rotors, 10 bearings, 11 bearings, 12 rotation axes, 13 rotor yoke, 14 magnets, 15 resin, 16 rotation detector, 17 Detector cover

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 筒状をした金属製のフレームと、前記フ
レームの軸方向端部にそれぞれ取り付けた負荷側ブラケ
ットと反負荷側ブラケットとからなる外枠と、前記フレ
ームの内面に取り付けた固定子コアと、前記固定子コア
に巻装した固定子巻線とからなる固定子と、前記負荷側
ブラケットと反負荷側ブラケットに軸受を介して回転自
在に支持した回転子と、前記反負荷側ブラケットに取り
付けた回転検出器とを有するACサーボモータにおい
て、 前記フレームをアルミニウム製とし、固定子巻線を覆う
ようにして固定子を樹脂でモールドするとともに、フレ
ームの反負荷側端部と反負荷側ブラケット間に樹脂を介
在させたことを特徴とするACサーボモータ。
1. A tubular metal frame, an outer frame composed of a load side bracket and an anti-load side bracket attached to axial end portions of the frame, and a stator attached to the inner surface of the frame. A stator composed of a core and a stator winding wound around the stator core; a rotor rotatably supported on the load side bracket and the anti-load side bracket via bearings; and an anti-load side bracket In the AC servomotor having a rotation detector attached to, the frame is made of aluminum, the stator is molded with resin so as to cover the stator winding, and the end portion of the frame on the non-load side and the anti-load side AC servo motor characterized by resin interposed between brackets.
【請求項2】 筒状をしたフレームと、前記フレームの
軸方向端部にそれぞれ取り付けた負荷側ブラケットと反
負荷側ブラケットとからなる外枠と、前記フレームの内
面に取り付けた固定子コアと、前記固定子コアに巻装し
た固定子巻線とからなる固定子と、前記負荷側ブラケッ
トと反負荷側ブラケットに軸受を介して回転自在に支持
した回転子と、前記反負荷側ブラケットに取り付けた回
転検出器とを有するACサーボモータにおいて、 前記フレームをアルミニウム製とし、固定子巻線を覆う
ようにして固定子を樹脂でモールドするとともに、反負
荷側ブラケットも樹脂で構成したことを特徴とするAC
サーボモータ。
2. A tubular frame, an outer frame composed of a load side bracket and an anti-load side bracket attached to axial end portions of the frame, and a stator core attached to the inner surface of the frame. A stator composed of a stator winding wound around the stator core, a rotor rotatably supported by the load side bracket and the anti-load side bracket via bearings, and attached to the anti-load side bracket In an AC servomotor having a rotation detector, the frame is made of aluminum, the stator is molded with resin so as to cover the stator winding, and the anti-load side bracket is also made of resin. AC
Servomotor.
JP2001291738A 2001-09-25 2001-09-25 AC servo motor Expired - Fee Related JP4592050B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001291738A JP4592050B2 (en) 2001-09-25 2001-09-25 AC servo motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001291738A JP4592050B2 (en) 2001-09-25 2001-09-25 AC servo motor

Publications (2)

Publication Number Publication Date
JP2003102141A true JP2003102141A (en) 2003-04-04
JP4592050B2 JP4592050B2 (en) 2010-12-01

Family

ID=19113832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001291738A Expired - Fee Related JP4592050B2 (en) 2001-09-25 2001-09-25 AC servo motor

Country Status (1)

Country Link
JP (1) JP4592050B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007195269A (en) * 2006-01-17 2007-08-02 Yaskawa Electric Corp Motor
CN104158333A (en) * 2014-07-29 2014-11-19 佛山市威灵洗涤电机制造有限公司 Motor end cover as well as integrated motor and split type motor both adopting same
CN109906543A (en) * 2016-10-26 2019-06-18 日本电产三协株式会社 Motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007195269A (en) * 2006-01-17 2007-08-02 Yaskawa Electric Corp Motor
CN104158333A (en) * 2014-07-29 2014-11-19 佛山市威灵洗涤电机制造有限公司 Motor end cover as well as integrated motor and split type motor both adopting same
CN104158333B (en) * 2014-07-29 2017-11-24 佛山市威灵洗涤电机制造有限公司 Electric motor end cap and the integrated motor with it and split type motor
CN109906543A (en) * 2016-10-26 2019-06-18 日本电产三协株式会社 Motor
US11088587B2 (en) 2016-10-26 2021-08-10 Nidec Sankyo Corporation Motor

Also Published As

Publication number Publication date
JP4592050B2 (en) 2010-12-01

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