JP2005137111A - Corner beveling method at teeth end part of stator core for motor - Google Patents

Corner beveling method at teeth end part of stator core for motor Download PDF

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JP2005137111A
JP2005137111A JP2003370093A JP2003370093A JP2005137111A JP 2005137111 A JP2005137111 A JP 2005137111A JP 2003370093 A JP2003370093 A JP 2003370093A JP 2003370093 A JP2003370093 A JP 2003370093A JP 2005137111 A JP2005137111 A JP 2005137111A
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stator core
teeth
corner
chamfering
tooth
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JP2005137111A5 (en
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Takeshi Nonaka
剛 野中
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Yaskawa Electric Corp
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Yaskawa Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To attain a corner beveled profile at the teeth end part of a desired stator core and to bevel the corner part in a mass production manner. <P>SOLUTION: In the profile at the teeth end part of a stator core molded of magnetic powder for a motor where a yoke part and the teeth part are covered with an insulating coating and used by winding an exciting coil, a corner part produced from a beveled part for enhancing the strength of punch of the molded stator is post-processed by a procedure for performing beveling by pressing with a die. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、モータ用固定子鉄心のティース端部の加工法に関するものである。   The present invention relates to a method for processing a tooth end portion of a stator core for a motor.

モータ用固定子鉄心として、磁性粉末により型で成形し、固定子鉄心のティース部と励磁コイル間の絶縁としてインシュレータ等の別部品を用いずに、固定子鉄心に直接絶縁コーティングを施し、インシュレータ等の部材を廃したものが使用されることがある。
前記固定子鉄心は磁性粉末により型で成形する関係上、ティースの端部にコイル巻装上有害となる角部が生じる。この角部を丸める従来の面取り加工方法は、切削又は研削での除去加工によっていた。
これを量産的に行うものとしては、本モータ用固定子鉄心以外の焼結材での面取り加工方法の例がある（例えば、特許文献１参照）。また、除去加工によらない例としては、金型により加圧して加工する例もある（例えば、特許文献２参照）。
以下、従来の加工方法を図に基づいて簡単に説明する。
図１０は従来技術及び本発明の角部面取り加工方法によって製作の固定子鉄心が用いられるモータ例の軸方向断面図である。図１１は図１０に示すモータの中央部の径方向断面図である。
図１０及び図１１において、１は固定子鉄心、１Ｊは固定子鉄心１のティース端部である。３はモータの反負荷側の端部に取り付けた回転検出器である。固定子鉄心１のコイル巻装部には、絶縁コーティング４が施され、励磁コイル５が巻装される。６は負荷側ブラケットで、７は反負荷側ブラケットである。両ブラケット６，７は、軸受８を介して回転自在に回転子２を支承している。９は外部と通電するコネクタである。
図１２は、図１０及び図１１で説明した固定子鉄心１の磁性粉末により型で成形し製作される固定子鉄心の製造状況説明図である。
図１３は、図１２におけるＣ−Ｃ断面による矢視図である。
図１２において、１は固定子鉄心である。１０は下パンチ、１１は上パンチである。１２はサイドコア、１３はダイ、１４はコアピンである。
図１６の従来の方法の処理手順を示すフローチャートに示すように、固定子鉄心１は磁性粉末により、サイドコア１２、ダイ１３及びコアピン１４の間で、下パンチ１０、上パンチ１１より上下方向より圧縮されて成形される。成形の後の工程で加熱され、形状を修正され固定子鉄心が完成する。絶縁コーティングはさらにその後施される。
このように製作される固定子鉄心１のティース端部１Ｊの形状を、図１３を用いて説明する。
前記のように固定子鉄心１のティース端部１Ｊには、絶縁コーティング４を介して励磁コイル５が巻装される。絶縁コーティングの膜厚は非常に薄いので、巻装時励磁コイルの皮膜を傷つけないためには、ティース端部は丸く成形されることが望ましい。
一方、１Ａは上パンチ及び下パンチの強度を高めるための面取り部により生じる角部であり、角部１Ａはパンチの可動方向に概垂直で、通常0.2〜1mm程度の幅で設けられる。このパンチの面取り部を設けないと周辺部が鋭利な角度となり、パンチの耐久性を確保できない。
図１４は、固定子鉄心のティース端部１Ｊに励磁コイル５を巻装する状態を示す説明図である。図１４において、角部１Ａが未加工の場合、角部１Ａに接触する部分のコイルの皮膜を傷つけやすい。
図１５は、従来の除去加工により面取り加工された固定子鉄心のティース端部１Ｊに励磁コイル５が巻装された状態を示す説明図である。１Ｃは加工により除去された部分であり、１Ｄはその結果成形されるＲ面取り部である。Ｒ面取り部１Ｄにより励磁コイル５の皮膜は傷つかない。
特開平６−２０１２号公報 実公平６−２３５３１号公報 As a stator core for motors, it is molded in a mold with magnetic powder, and insulation is applied directly to the stator core without using separate parts such as an insulator for insulation between the teeth of the stator core and the exciting coil. In some cases, the above-mentioned member is used.
Since the stator core is molded with a magnetic powder, a corner portion that is harmful to coil winding is generated at the end portion of the teeth. The conventional chamfering method for rounding the corners is removal by cutting or grinding.
As an example of mass production, there is an example of a chamfering method using a sintered material other than the stator core for the motor (see, for example, Patent Document 1). In addition, as an example that does not depend on removal processing, there is an example in which processing is performed by pressing with a mold (see, for example, Patent Document 2).
Hereinafter, a conventional processing method will be briefly described with reference to the drawings.
FIG. 10 is an axial sectional view of an example of a motor in which a stator core manufactured by the prior art and the corner chamfering method of the present invention is used. 11 is a radial cross-sectional view of the central portion of the motor shown in FIG.
10 and 11, reference numeral 1 denotes a stator core, and 1 J denotes a tooth end portion of the stator core 1. Reference numeral 3 denotes a rotation detector attached to the end of the motor opposite to the load. An insulating coating 4 is applied to the coil winding portion of the stator core 1 and an exciting coil 5 is wound thereon. 6 is a load side bracket and 7 is an anti-load side bracket. Both the brackets 6 and 7 support the rotor 2 through a bearing 8 so as to be rotatable. Reference numeral 9 denotes a connector for energizing the outside.
FIG. 12 is a manufacturing state explanatory diagram of a stator core manufactured by molding with a mold using the magnetic powder of the stator core 1 described in FIGS. 10 and 11.
FIG. 13 is an arrow view taken along the line CC in FIG.
In FIG. 12, 1 is a stator core. 10 is a lower punch and 11 is an upper punch. 12 is a side core, 13 is a die, and 14 is a core pin.
As shown in the flowchart showing the processing procedure of the conventional method in FIG. 16, the stator core 1 is compressed in the vertical direction by the magnetic powder between the side core 12, the die 13 and the core pin 14 by the lower punch 10 and the upper punch 11. To be molded. Heating is performed in the process after molding, the shape is corrected, and the stator core is completed. An insulating coating is then applied.
The shape of the tooth end 1J of the stator core 1 manufactured in this way will be described with reference to FIG.
As described above, the exciting coil 5 is wound around the tooth end portion 1J of the stator core 1 via the insulating coating 4. Since the thickness of the insulating coating is very thin, it is desirable that the teeth end be rounded so as not to damage the film of the exciting coil during winding.
On the other hand, 1A is a corner portion generated by a chamfered portion for increasing the strength of the upper punch and the lower punch, and the corner portion 1A is generally perpendicular to the movable direction of the punch and is usually provided with a width of about 0.2 to 1 mm. Unless the punch chamfered portion is provided, the peripheral portion has a sharp angle, and the durability of the punch cannot be secured.
FIG. 14 is an explanatory view showing a state where the exciting coil 5 is wound around the tooth end portion 1J of the stator core. In FIG. 14, when the corner portion 1A is not processed, it is easy to damage the coil coating of the portion in contact with the corner portion 1A.
FIG. 15 is an explanatory view showing a state in which the exciting coil 5 is wound around the teeth end portion 1J of the stator core that has been chamfered by conventional removal processing. 1C is a part removed by processing, and 1D is an R chamfered part formed as a result. The film of the exciting coil 5 is not damaged by the R chamfered portion 1D.
JP-A-6-2012 Japanese Utility Model Publication No. 6-23531

従来の切削又は研削により丸く除去加工する方法では、固定子鉄心においてティース端部は奥まったところにあることから手間を取り、この除去加工を量産的に行いづらいという問題もあった。また、特許文献１に記載の加工法は、量産的であるが適用できる形状に制約があるため本課題の解決方法としては用い得ない。
また、特許文献２に記載の加工方法が、前記の磁性粉末により型で成形し製作される固定子鉄心のティース端部の面取り加工方法として用いられた前例はなく、本課題の解決方法として応用するためには、特許文献２に記載されていない、面取り金型による加圧加工時の素材の変形によりはみ出し部分の対策が必要である。例えば、この特許文献２の場合、はみ出した部分は歯車の歯面形状を損ない、歯車の効率的かつ静粛な噛合いを損なう。
本発明はこのような問題を解決するためになされたもので、所望の固定子鉄心のティース端部の角部の面取り形状が得られるとともに、その角部の面取りを量産的に加工することができる方法を提供することを目的とするものである。 In the conventional method of removing by rounding by cutting or grinding, there is a problem that it is difficult to carry out this removal process in a mass production because the end of the teeth is in the back of the stator core. Moreover, although the processing method described in Patent Document 1 is mass-produced, it cannot be used as a solution to this problem because there are restrictions on the applicable shape.
In addition, there is no precedent in which the processing method described in Patent Document 2 is used as a chamfering method for the teeth end portion of a stator core formed by molding with the above-described magnetic powder, and is applied as a solution to this problem. In order to do this, it is necessary to take measures against the protruding portion due to deformation of the material at the time of pressure processing by the chamfering die, which is not described in Patent Document 2. For example, in the case of this patent document 2, the protruding part impairs the tooth surface shape of the gear and impairs the efficient and quiet engagement of the gear.
The present invention has been made to solve such a problem, and it is possible to obtain a desired chamfered shape of the corner of the teeth end of the stator iron core and to mass-produce the chamfered corner of the corner. It is intended to provide a method that can be used.

上記問題を解決するため、本発明は、次のような方法を用いたものである。
請求項１に記載の発明は、ヨーク部とティース部を絶縁コーティングで覆い励磁コイルを巻装し用いられるモータ用の、磁性粉末により型で成形し製作される固定子鉄心のティース端部の形状において、成形された固定子鉄心のパンチの強度を高めるための面取り部より生じた角部を、後の工程で金型により加圧して面取り加工を行うという手順で処理することを特徴とするものである。
また、請求項２に記載の発明は、前記固定子鉄心のティース端部の角部面取り加工用パンチの加圧部斜面が、ティースを跨いで左右対称に設けられていることを特徴とするものである。
また、請求項３に記載の発明は、前記固定子鉄心のティース端部の角部面取り加工用パンチの加圧部斜面が、ティースの側面の角度から励磁コイルが巻装されるティース端部への接線より大きな角度まで、ティース端部に向かうに従ってティース側面とのなす角が徐々に大きくなっていることを特徴とするものである。
また、請求項４に記載の発明は、前記固定子鉄心のティース端部の角部面取り加工において、角部の加圧加工によりはみ出す部分が、コイルの巻装に接しないティース端部の隅部に生じることを特徴とするものである。 In order to solve the above problem, the present invention uses the following method.
According to the first aspect of the present invention, the shape of the teeth end portion of the stator core that is formed by molding with a magnetic powder mold for a motor that is used by covering the yoke portion and the tooth portion with an insulating coating and winding an exciting coil. In the above, the corner portion generated from the chamfered portion for increasing the strength of the punch of the molded stator core is processed by a procedure in which chamfering is performed by pressing with a mold in a later step. It is.
Further, the invention according to claim 2 is characterized in that the pressurizing portion slope of the corner chamfering punch at the tooth end portion of the stator core is provided symmetrically across the teeth. It is.
According to a third aspect of the present invention, the pressure-apparatus slope of the corner chamfering punch at the tooth end of the stator core is moved from the angle of the side surface of the tooth to the tooth end where the exciting coil is wound. The angle formed with the side surface of the tooth gradually increases toward the teeth end up to an angle larger than the tangent line.
According to a fourth aspect of the present invention, in the corner chamfering process of the teeth end portion of the stator core, the corner portion of the teeth end portion where the protruding portion of the corner portion is not in contact with the coil winding is applied. It is characterized in that it occurs.

本発明によれば、次のような効果がある。
・ 請求項１に記載の発明によれば、固定子鉄心のティース端部の角部の面取り加工時間を飛躍的に短縮することができ、量産的に加工することができる。
・ 請求項２に記載の発明によると、固定子鉄心のティース部の姿勢を正しく保とうとする調芯作用を得ることができ、不均一のない所望の固定子鉄心のティース端部の角部の面取り形状を得ることができる。
・ 請求項３に記載の発明によれば、励磁コイルの巻装時に面取り加工部の端部をコイルと非接触にすることができ、皮膜が傷つくことはない所望の固定子鉄心のティース端部の角部の面取り形状を得ることができる。
・ 請求項４に記載の発明によれば、角部の加圧加工によりはみ出す部分が、励磁コイルの巻装に接しないティース端部の隅部に生じさせることができ、所望の固定子鉄心のティース端部の角部の面取り形状が得ることができる。 The present invention has the following effects.
-According to invention of Claim 1, the chamfering time of the corner | angular part of the teeth edge part of a stator core can be shortened drastically, and it can process in mass production.
According to the second aspect of the present invention, it is possible to obtain a centering action for maintaining the posture of the teeth portion of the stator core correctly, and to prevent the corner portion of the teeth end portion of the desired stator iron core from being uneven. A chamfered shape can be obtained.
According to the invention described in claim 3, the end of the chamfered portion can be brought into non-contact with the coil when the exciting coil is wound, and the desired end of the teeth of the stator core that does not damage the coating. The chamfered shape of the corner can be obtained.
According to the fourth aspect of the present invention, the protruding portion of the corner portion can be generated at the corner portion of the tooth end portion that is not in contact with the winding of the exciting coil, and the desired stator core A chamfered shape at the corner of the tooth end can be obtained.

以下、本発明の実施例を、図に基づいて説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１は、本発明の第１の実施例を実施する面取り加工用金型の構成を示す説明図である。
図２は、本発明の方法の処理手順を示すフローチャートである。
図１において、１Ｊは固定子鉄心のティース端部であり、１Ａは上パンチ及び下パンチの強度を高めるための面取り部により生じる角部である。１５は面取り加工用金型の下パンチであり、１６は面取り加工用金型の上パンチである。
図１１及び図１２に示すように、固定子鉄心１は磁性粉末によって、サイドコア１２、ダイ１３及びコアピン１４の間で、下パンチ１０と上パンチ１１により上下方向から圧縮されて成形される。成形の後の工程で加熱され成形品としての強度を得る。その後の工程で図１に示すように面取り用金型にて固定子鉄心のティース端部１Ｊを、上パンチ１６及び下パンチ１５で上下より加圧し加工する。絶縁コーティングは、さらにその後施される。
図３は、固定子鉄心のティース端部１Ｊが上パンチ１６及び下パンチ１５の加圧により加工された状態の説明図である。１Ｃは加圧加工された部分である。
なお、本発明の方法では、図１及び図３に示すように上下パンチによりティースの上下端部を同時に加工しても、図４に示すように片側ずつ加工しても良い。また、複数のティースを同時に加工しても、個別に加工しても良い。
以上、本発明の実施例１（請求項１に対応）に記載の発明によると、従来の除去加工による固定子鉄心のティース端部の角部の面取り加工時間を飛躍的に短縮することができ、量産的に加工することができる。 FIG. 1 is an explanatory view showing the configuration of a chamfering mold for carrying out the first embodiment of the present invention.
FIG. 2 is a flowchart showing the processing procedure of the method of the present invention.
In FIG. 1, 1J is a tooth end portion of the stator core, and 1A is a corner portion generated by a chamfered portion for increasing the strength of the upper punch and the lower punch. Reference numeral 15 denotes a lower punch of the chamfering mold, and reference numeral 16 denotes an upper punch of the chamfering mold.
As shown in FIGS. 11 and 12, the stator core 1 is molded between a side core 12, a die 13, and a core pin 14 by a magnetic powder and compressed from below in a vertical direction by a lower punch 10 and an upper punch 11. It is heated in the post-molding process to obtain strength as a molded product. In the subsequent steps, as shown in FIG. 1, the teeth end portion 1 </ b> J of the stator core is pressed and processed by the upper punch 16 and the lower punch 15 from above and below with a chamfering mold. An insulating coating is then applied.
FIG. 3 is an explanatory view showing a state where the teeth end portion 1J of the stator core is processed by pressurization of the upper punch 16 and the lower punch 15. 1C is a portion subjected to pressure processing.
In the method of the present invention, the upper and lower ends of the teeth may be simultaneously processed by upper and lower punches as shown in FIGS. 1 and 3, or may be processed one by one as shown in FIG. Further, a plurality of teeth may be processed simultaneously or individually.
As described above, according to the invention described in the first embodiment of the present invention (corresponding to claim 1), it is possible to dramatically shorten the chamfering time of the corner portion of the teeth end portion of the stator core by the conventional removal processing. Can be mass-produced.

図５は、本発明の第２の実施例を実施する面取り加工用金型の形状の特徴と作用を示す説明図である。
図５において、１６は、加圧部斜面がティースを跨いで左右対称に設けられている固定子鉄心のティース端部の角部面取り加工用パンチであり、１Ｊは固定子鉄心のティース端部である。加圧加工時、仮にティース端部１Ｊの中心とパンチ１６の中心の位置ずれがあって、ティース端部がパンチの斜面１６Ｃに接触しても、加圧部斜面がティースを跨いで左右対称に設けられているため調芯作用が働き、ティ−ス端部は矢印Ａのように移動し、片側が多目に加圧加工されることがない。
同様に図６において、仮に固定子鉄心の姿勢が傾き、ティース端部１Ｊの中心とパンチ１６の中心の位置ずれがあっても、加圧部斜面がティースを跨いで左右対称に設けられているため調芯作用が働き、ティ−ス端部は矢印Ｂのように移動し、１箇所が多目に加圧加工されることがない。
以上、本発明の実施例２（請求項２に対応）に記載の発明によると、固定子鉄心のティース部の姿勢を正しく保とうとする調芯作用を得ることができ、不均一のない所望の固定子鉄心のティース端部の角部の面取り形状を得ることができる。 FIG. 5 is an explanatory view showing the characteristics and operation of the shape of a chamfering mold for carrying out the second embodiment of the present invention.
In FIG. 5, reference numeral 16 denotes a corner chamfering punch at the teeth end portion of the stator core in which the pressing portion inclined surface is provided symmetrically across the teeth, and 1J denotes the teeth end portion of the stator core. is there. Even if the center of the teeth end 1J and the center of the punch 16 are misaligned during the pressing process, and the teeth end contacts the inclined surface 16C of the punch, the inclined surface of the pressing portion is symmetrical across the teeth. Since the centering action is provided, the tooth end moves as indicated by the arrow A, and one side is not subjected to multiple pressurization.
Similarly, in FIG. 6, even if the attitude of the stator iron core is inclined and the center of the teeth end 1 </ b> J and the center of the punch 16 are misaligned, the pressure-apparatus slope is provided symmetrically across the teeth. Therefore, the centering action works, the tooth end moves as shown by an arrow B, and one place is not subjected to multiple pressurization.
As described above, according to the invention described in Example 2 (corresponding to claim 2) of the present invention, it is possible to obtain a centering action for maintaining the posture of the teeth portion of the stator core correctly, and to achieve a desired non-uniformity. A chamfered shape of a corner portion of the teeth end portion of the stator core can be obtained.

図７は、本発明の第３の実施例を実施する面取り加工用金型の形状の特徴と作用を示す説明図であり、図８は図７における加圧部Ｇの拡大図である。
図７及び図８において、１６は上パンチであり、１６Ａはティースとの嵌合入口面取り部である。１６Ｂは上パンチのティース端部からの逃げ部であり、１６Ｃは角部１Ａを加圧加工するパンチの斜面である。１６Ｃａは斜面１６Ｃの上端部である。１Ｂは角部１Ａの加圧加工時に素材の変形によりはみ出した部分である。１Ｃは加圧により加工された部分であり、１Ｄはその結果成形されるＲ面取り部である。１Ｄａは同Ｒ面取り部の上端部であり、１Ｌはティース端部の巻線に接しない窪み部である。図９は、加圧により面取り加工された固定子鉄心のティース端部１Ｊに励磁コイル５が巻装された状態を示す説明図である。
図８において、上パンチ１６の斜面１６Ｃは、ティースの側面の角度からコイルが巻装されるティース端部への接線とティース側面とのなす角Ｄより十分大きな角度Ｆまで、ティース端部に向かうに従ってティース側面とのなす角が徐々に大きくなっている。
上パンチ１６は、成形されるＲ面取り部の上端部１Ｄａにおける接線とティース側面とのなす角Ｅが前記のＤより大きくなる位置まで加圧移動する。従って、励磁コイルは巻装時に前記上端部１Ｄａと接触しないため皮膜が傷つくことはない。
以上、本発明の実施例３（請求項３に対応）によれば、請求項３に記載の発明によると、励磁コイルの巻装時に面取り加工部の端部をコイルと非接触にすることができ、皮膜が傷つくことはない所望の固定子鉄心のティース端部の角部の面取り形状を得ることができる。 FIG. 7 is an explanatory view showing the characteristics and operation of the shape of a chamfering mold for carrying out the third embodiment of the present invention, and FIG. 8 is an enlarged view of the pressurizing part G in FIG.
7 and 8, 16 is an upper punch, and 16A is a fitting entrance chamfered portion with a tooth. Reference numeral 16B denotes a relief portion from the teeth end of the upper punch, and reference numeral 16C denotes a slope of the punch that pressurizes the corner portion 1A. 16Ca is the upper end of the slope 16C. Reference numeral 1B denotes a portion that protrudes due to deformation of the material when the corner portion 1A is pressed. 1C is a part processed by pressurization, and 1D is an R chamfered part formed as a result. 1Da is an upper end portion of the R chamfered portion, and 1L is a hollow portion that is not in contact with the winding at the tooth end portion. FIG. 9 is an explanatory view showing a state where the exciting coil 5 is wound around the teeth end portion 1J of the stator core chamfered by pressurization.
In FIG. 8, the inclined surface 16 </ b> C of the upper punch 16 goes from the angle of the side surface of the tooth to the tooth end portion to an angle F sufficiently larger than the angle D formed by the tangent to the tooth end portion around which the coil is wound and the side surface of the tooth. The angle between the teeth and the teeth gradually increases.
The upper punch 16 is pressurized and moved to a position where an angle E formed by a tangent line at the upper end 1Da of the R chamfered portion to be formed and the side surface of the tooth becomes larger than the above D. Therefore, since the exciting coil does not come into contact with the upper end 1Da during winding, the film is not damaged.
As described above, according to the third embodiment of the present invention (corresponding to the third aspect), according to the third aspect of the present invention, the end portion of the chamfered portion can be brought into non-contact with the coil when the exciting coil is wound. It is possible to obtain a desired chamfered shape of the corner portion of the teeth end portion of the stator core without damaging the coating.

また図８及び図９を用いて、本発明の第４の実施例を実施する面取り加工用金型による加工の特徴を説明する。
図８において、上パンチ１６からの加圧によりＲ面取り部１６Ｄが成形され、素材の変形によりはみ出した部分１Ｂも成形される。１Ｂの形状は不規則に成形されるが、巻線に接しないティース端部の隅部１Ｌに成形されるため、図８に示すように、巻装時も何ら悪影響を生じない。
上記実施例１から４にて述べたように、本発明によると、角部の加圧加工によりはみ出す部分が、励磁コイルの巻装に接しないティース端部の隅部に生じさせることができ、所望の固定子鉄心のティース端部の角部の面取り形状を得ることができる。 Further, the features of machining by the chamfering mold for carrying out the fourth embodiment of the present invention will be described with reference to FIGS.
In FIG. 8, the R chamfered portion 16 </ b> D is formed by pressurization from the upper punch 16, and the portion 1 </ b> B that protrudes due to deformation of the material is also formed. Although the shape of 1B is irregularly formed, since it is formed at the corner 1L of the end portion of the tooth that does not contact the winding, as shown in FIG. 8, there is no adverse effect during winding.
As described in Examples 1 to 4 above, according to the present invention, a portion that protrudes by pressing the corner portion can be generated at the corner portion of the tooth end portion that does not contact the winding of the excitation coil, A desired chamfered shape of the corner of the teeth end of the stator core can be obtained.

本発明の第１の実施例における面取り加工用金型の構成を示す説明図である。It is explanatory drawing which shows the structure of the metal mold | die for chamfering in the 1st Example of this invention. 本発明の第１の実施例における処理手順を示すフローチャートである。It is a flowchart which shows the process sequence in 1st Example of this invention. 本発明の第１の実施例における固定子鉄心のティース端部１Ｊが上パンチ１６及び下パンチ１５の加圧により加工された状態を示す説明図である。It is explanatory drawing which shows the state by which the teeth edge part 1J of the stator core in 1st Example of this invention was processed by the pressurization of the upper punch 16 and the lower punch 15. FIG. 本発明の第１の実施例における他の方法を示す説明図である。It is explanatory drawing which shows the other method in the 1st Example of this invention. 本発明の第２の実施例における面取り加工用金型の形状の特徴と作用を示す説明図である。It is explanatory drawing which shows the characteristic and effect | action of the shape of the metal mold | die for chamfering in the 2nd Example of this invention. 本発明の第２の実施例における他の方法を示す説明図である。It is explanatory drawing which shows the other method in the 2nd Example of this invention. 本発明の第３の実施例における面取り加工用金型の形状の特徴と作用を示す説明図である。It is explanatory drawing which shows the characteristic and effect | action of the shape of the metal mold | die for chamfering in the 3rd Example of this invention. 図７における加圧部Ｇの拡大図である。It is an enlarged view of the pressurizing part G in FIG. 本発明の第４の実施例において、加圧により面取り加工された固定子鉄心のティース端部１Ｊに励磁コイル５が巻装された状態を示す説明図である。In the 4th Example of this invention, it is explanatory drawing which shows the state by which the exciting coil 5 was wound by the teeth edge part 1J of the stator core chamfered by pressurization. 従来技術及び本発明の角部面取り加工方法によって製作の固定子鉄心が用いられるモータ例の軸方向断面図である。It is an axial sectional view of an example of a motor in which a stator core manufactured by the prior art and the corner chamfering method of the present invention is used. 図１０に示すモータの中央部の径方向断面図である。It is radial direction sectional drawing of the center part of the motor shown in FIG. 従来技術における固定子鉄心の型による製造状況説明図である。It is manufacturing condition explanatory drawing by the type | mold of the stator core in a prior art. 図１２におけるＣ−Ｃ断面による矢視図である。It is an arrow view by the CC cross section in FIG. 従来技術における固定子鉄心のティース端部に励磁コイルを巻装する状態を示す説明図である。It is explanatory drawing which shows the state which winds an exciting coil in the teeth edge part of the stator core in a prior art. 従来技術において除去加工により面取り加工された固定子鉄心のティース端部１Ｊに励磁コイル５が巻装された状態を示す説明図である。It is explanatory drawing which shows the state by which the exciting coil 5 was wound by the teeth edge part 1J of the stator core chamfered by the removal process in the prior art. 従来技術における処理手順を示すフローチャートである。It is a flowchart which shows the process sequence in a prior art.

符号の説明Explanation of symbols

１ 固定子鉄心
２ 回転子
３ 回転検出器
４ 絶縁コーティング
５ 励磁コイル
６ 負荷側ブラケット
７ 反負荷側ブラケット
８ 軸受
９ 外部と通電するコネクタ
１０ 成形金型の下パンチ
１１ 成形金型の上パンチ
１２ 成形金型のサイドコア
１３ 成形金型のダイ
１４ 成形金型のコアピン
１５ 面取り金型の下パンチ
１６ 面取り金型の上パンチ
１７ 面取り金型のワーク支持台
１Ａ パンチの強度を高めるための面取り部により生じる角部
１Ｂ 角部１Ａの加圧加工時に素材の変形によりはみ出した部分
１Ｃ パンチの強度を高めるための面取り部により生じる角部の加圧加工された部分
１Ｄ 加圧加工の結果成形されるＲ面取り部
１Ｄａ 同Ｒ面取り部の上端部
１Ｆ ティース端面のＲ面取り部
１Ｊ 固定子鉄心のティース端部
１Ｌ ティース端部の巻線に接しない窪み部
１６Ａ ティースとの嵌合入口面取り部
１６Ｂ パンチのティース端部からの逃げ部
１６Ｃ 角部１Ａを加圧加工するパンチの斜面
１６Ｃａ 同斜面の上端部 DESCRIPTION OF SYMBOLS 1 Stator iron core 2 Rotor 3 Rotation detector 4 Insulation coating 5 Excitation coil 6 Load side bracket 7 Anti-load side bracket 8 Bearing 9 Connector 10 which supplies electricity with the outside 10 Mold lower punch 11 Mold upper punch 12 Mold Die side core 13 Die die 14 Mold die core pin 15 Chamfering die lower punch 16 Chamfering die upper punch 17 Chamfering die work support 1A Produced by chamfering portion for increasing punch strength Corner portion 1B A portion 1C that protrudes due to deformation of the material during pressure processing of the corner portion 1A. A portion 1D that is subjected to pressure processing of a corner portion that is generated by a chamfering portion for increasing the strength of the punch. Part 1Da Upper end part 1F of the same R chamfered part 1F Teeth end face R chamfered part 1J Stator iron core tooth end part 1L Not in contact with the winding of the tooth end part Recessed portion 16A Fitting entrance chamfered portion 16B with teeth 16B Escape portion 16C from punch teeth end portion Punch inclined surface 16Ca for pressurizing corner portion 1A Upper end portion of the inclined surface

Claims (4)

ヨーク部とティース部を絶縁コーティングで覆い励磁コイルを巻装し用いられるモータ用の、磁性粉末により型で成形し製作される固定子鉄心のティース端部の角部面取り加工方法において、成形された固定子鉄心のパンチの強度を高めるための面取り部より生じた角部を、後の工程で金型により加圧して面取り加工を行うという手順で処理することを特徴とするモータ用固定子鉄心のティース端部の角部面取り加工方法。   In the method of chamfering the corners of the teeth end of the stator core, which is formed by molding with a magnetic powder mold, for the motor used by covering the yoke and teeth with insulating coating and winding the exciting coil. In the stator core for motors, characterized in that the corner portion generated from the chamfered portion for increasing the punch strength of the stator core is processed by a procedure in which chamfering is performed by pressing with a mold in a later step. Method for chamfering corners of teeth ends. 前記加工方法に用いられる固定子鉄心のティース端部の角部面取り加工用パンチの加圧部斜面は、ティースを跨いで左右対称に設けられていることを特徴とする請求項１記載のモータ用固定子鉄心のティース端部の角部面取り加工方法。   2. The motor according to claim 1, wherein the inclined surface of the pressurizing portion of the corner chamfering punch at the end of the teeth of the stator core used in the processing method is provided symmetrically across the teeth. Method of chamfering the corners of the teeth of the stator core. 前記加工方法に用いられる固定子鉄心のティース端部の角部面取り加工用パンチの加圧部斜面は、ティースの側面の角度からコイルが巻装されるティース端部への接線より大きな角度まで、ティース端部に向かうに従ってティース側面とのなす角が徐々に大きくなっていることを特徴とする請求項１記載のモータ用固定子鉄心のティース端部の角部面取り加工方法。   The pressing portion slope of the corner chamfering punch of the tooth end of the stator core used in the processing method is from the angle of the side surface of the tooth to an angle larger than the tangent to the tooth end where the coil is wound, 2. The method for chamfering a corner portion of a tooth end portion of a stator core for a motor according to claim 1, wherein an angle formed with the side surface of the tooth gradually increases toward the tooth end portion. 前記角部の加圧加工によりはみ出す部分を、励磁コイルの巻装に接しないティース端部の隅部に生じさせることを特徴とする請求項１記載のモータ用固定子鉄心のティース端部の角部面取り加工方法。   The corner of the tooth end portion of the stator core of the motor according to claim 1, wherein a protruding portion of the corner portion is formed at a corner portion of the tooth end portion not contacting the winding of the exciting coil. Part chamfering method.
JP2003370093A 2003-10-30 2003-10-30 Corner beveling method at teeth end part of stator core for motor Pending JP2005137111A (en)

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WO2007061215A2 (en) * 2005-11-23 2007-05-31 Daewoo Electronics Corporation Soft magnetic powder-based stator for use in motor
JP2015025189A (en) * 2013-07-29 2015-02-05 住友電気工業株式会社 Powder compression molding, method of producing powder compression molding and coil part

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JPH04322141A (en) * 1991-04-22 1992-11-12 Victor Co Of Japan Ltd Motor core
JP2002262508A (en) * 2001-02-27 2002-09-13 Tokyo Parts Ind Co Ltd Stator core, stator with core, spindle motor with stator, and manufacturing method for motor
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007061215A2 (en) * 2005-11-23 2007-05-31 Daewoo Electronics Corporation Soft magnetic powder-based stator for use in motor
WO2007061215A3 (en) * 2005-11-23 2009-05-07 Daewoo Electronics Corp Soft magnetic powder-based stator for use in motor
JP2015025189A (en) * 2013-07-29 2015-02-05 住友電気工業株式会社 Powder compression molding, method of producing powder compression molding and coil part

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