JP6232641B2 - Manufacturing method of stator core - Google Patents

Manufacturing method of stator core Download PDF

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JP6232641B2
JP6232641B2 JP2014016343A JP2014016343A JP6232641B2 JP 6232641 B2 JP6232641 B2 JP 6232641B2 JP 2014016343 A JP2014016343 A JP 2014016343A JP 2014016343 A JP2014016343 A JP 2014016343A JP 6232641 B2 JP6232641 B2 JP 6232641B2
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stator core
teeth
component member
assembly
manufacturing
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JP2015144499A (en
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智 太田
智 太田
隆志 沖津
隆志 沖津
行正 久光
行正 久光
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Meidensha Corp
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Description

本発明は、固定子鉄心の製造方法に関する。   The present invention relates to a method for manufacturing a stator core.

モータなどの回転電機における固定子は、略円筒形状のヨーク部と当該ヨーク部の外周側または内周側へ向かって放射状に突出する複数のティース部とから成る固定子鉄心と、固定子鉄心におけるティース部に巻線を巻回して成るコイルとから構成される。固定子鉄心は、ヨーク部およびティース部に相当する形状を有する電磁鋼板を当該固定子の軸方向に複数枚積層することにより製造され、固定子は、固定子鉄心を形成した後に当該固定子鉄心のティース部に巻線を巻回することにより製造される。   A stator in a rotating electrical machine such as a motor includes a stator core composed of a substantially cylindrical yoke portion and a plurality of teeth portions projecting radially toward the outer peripheral side or inner peripheral side of the yoke portion. It is comprised from the coil which winds a coil | winding around the teeth part. The stator core is manufactured by laminating a plurality of electromagnetic steel sheets having shapes corresponding to the yoke part and the tooth part in the axial direction of the stator, and the stator core is formed after the stator core is formed. It is manufactured by winding a winding around the tooth portion.

固定子の製造において、固定子鉄心のティース部に巻線を巻回してコイルを形成する作業は手間であり、特に、複数のティース部に巻線を高占積率で巻回するには時間が掛かってしまう。このようなティース部に巻線を巻回してコイルを形成する作業の手間を低減することができる技術としては、固定子鉄心を所定形状に分割した構成とすることが挙げられる。   In the manufacture of stators, it is troublesome to form a coil by winding the winding around the teeth of the stator core. In particular, it takes time to wind the winding around multiple teeth at a high space factor. Will be applied. As a technique that can reduce the labor of forming a coil by winding a winding around such a tooth portion, a configuration in which a stator core is divided into a predetermined shape can be mentioned.

分割構造の固定子鉄心としては、例えば、ヨーク部とティース部とを分割した分割構造の固定子鉄心、すなわち、略円筒形状のヨークの外周側または内周側に複数のティースを組み付けて成る固定子鉄心があり（例えば、特許文献１）、その他の例としては、固定子鉄心を周方向に分割した分割構造の固定子鉄心、すなわち、略円弧形状のヨーク部と当該ヨーク部の外周側または内周側へ向かって延びるティース部とを一体的に備えた分割鉄心を周方向に組み付けて成る固定子鉄心などがある。   As the split structure stator core, for example, a split structure stator core in which a yoke part and a tooth part are divided, that is, a fixed structure in which a plurality of teeth are assembled on the outer peripheral side or inner peripheral side of a substantially cylindrical yoke. There is a child core (for example, Patent Document 1), and other examples include a stator core having a divided structure in which the stator core is divided in the circumferential direction, that is, a substantially arc-shaped yoke portion and an outer peripheral side of the yoke portion or There is a stator core formed by assembling a split iron core integrally provided with a teeth portion extending toward the inner peripheral side in the circumferential direction.

分割構造の固定子鉄心は、所定の分割形状の電磁鋼板を複数枚積層して複数の分割積層体を形成し、それら複数の分割積層体をそれぞれ組み付けることにより構成される。例えば、所定の分割形状の電磁鋼板に組み付け用の突部および組み付け用の溝部を形成することにより、当該電磁鋼板を複数枚積層させた複数の分割積層体をそれぞれ組み付けることができるようにしている。   A stator core having a divided structure is formed by laminating a plurality of electromagnetic steel sheets having a predetermined divided shape to form a plurality of divided laminates, and assembling the plurality of divided laminates. For example, by forming protrusions for assembly and groove portions for assembly on electromagnetic steel sheets having a predetermined split shape, a plurality of divided laminates in which a plurality of the electromagnetic steel sheets are stacked can be respectively assembled. .

このような分割構造の固定子鉄心の製造において、電磁鋼板に形成する組み付け用の突部および溝部を同寸法とした場合には、当該組み付け用の突部と溝部とが干渉するので、分割積層体の組み付け作業が大変困難となる。そこで、電磁鋼板に形成する組み付け用の突部および溝部を異なる寸法、すなわち、電磁鋼板に形成する組み付け用溝部を組み付け用の突部よりも大きくすることにより、分割積層体の組み付け部（組み付け用の突部と溝部との間）に隙間を作ることができるので、分割積層体を組み付ける際に組み付け用の突部と溝部とが干渉せずに、当該組み付け作業を容易にすることができる。   In the manufacture of a stator core having such a divided structure, if the projections and grooves for assembly formed on the electromagnetic steel sheet have the same dimensions, the projections and grooves for assembly will interfere with each other. The assembly work of the body becomes very difficult. Therefore, the assembly protrusions and grooves formed on the electromagnetic steel sheet have different dimensions, that is, the assembly grooves formed on the electromagnetic steel sheet are made larger than the assembly protrusions, thereby assembling the divided laminated body (for assembly). Therefore, when assembling the divided laminated body, the assembling work can be facilitated without interference between the assembling protrusion and the groove.

特開２００２−１９９６６６号公報Japanese Patent Laid-Open No. 2002-199666

しかし、分割積層体の組み付け部における隙間は、組み付け時の作業（組み付け作業）を容易にすることができる一方で、組み付け後の固定子鉄心にガタ（組み付けガタ）となってしまう。このような組み付けガタを有する固定子鉄心を備えた回転電機においては、組み付けガタによる振動音の増大や部材の損傷等を生じてしまう虞がある。   However, the gap in the assembly portion of the divided laminated body can facilitate the work (assembly work) at the time of assembly, but becomes loose in the stator core after assembly. In a rotating electrical machine provided with a stator core having such an assembly backlash, there is a risk that an increase in vibration noise, damage to members, and the like due to the assembly backlash may occur.

なお、電磁鋼板を製作する際に組み付け用の突部および溝部を所定の寸法で形成することにより、分割積層体同士の組み付け作業を容易とし、かつ、固定子鉄心の組み付けガタを小さくすることができる。しかし、この製造方法では、組み付け作業の容易性および組み付けガタの大きさは、電磁鋼板を製作する際の製作誤差の影響を受け易いので、電磁鋼板の精度すなわち公差を厳しく管理しなければならず、製造コストの増大を招来してしまう。   In addition, when manufacturing magnetic steel sheets, by forming the projections and grooves for assembly with predetermined dimensions, it is possible to facilitate the assembly work between the divided laminates and reduce the assembly play of the stator core. it can. However, in this manufacturing method, the ease of assembling work and the size of the assembling backlash are easily affected by manufacturing errors when manufacturing the electrical steel sheet, so the accuracy of the electrical steel sheet, that is, the tolerance must be strictly controlled. This increases the manufacturing cost.

本発明は上記問題に鑑みてなされたもので、分割構造の固定子鉄心において、分割積層体同士の組み付け作業を容易にすると共に、組み付けガタを小さくすることを目的とする。   The present invention has been made in view of the above problems, and it is an object of the present invention to facilitate the assembling work between divided laminated bodies and reduce the assembling backlash in a stator core having a divided structure.

上記課題を解決する第一の発明に係る固定子鉄心の製造方法は、第一構成部材に形成した組み付け用の溝部に、第二構成部材に形成した組み付け用の突部を嵌入することにより、分割構造の固定子鉄心を構成する前記第一構成部材と前記第二構成部材とを組み付ける固定子鉄心の製造方法であって、前記第二構成部材における前記突部の幅が前記第一構成部材における前記溝部の幅よりも小さくなるように前記第二構成部材に湾曲部を形成し、前記第二構成部材における前記突部を前記第一構成部材における前記溝部に嵌入した後、前記第二構成部材における前記突部の幅が大きくなるように前記第二構成部材に圧力を加えることを特徴とする。   The manufacturing method of the stator core according to the first invention that solves the above-described problems is achieved by inserting the protrusion for assembly formed in the second component member into the groove for assembly formed in the first component member. A stator core manufacturing method for assembling the first component member and the second component member constituting a split structure stator core, wherein the width of the protrusion in the second component member is the first component member. A curved portion is formed in the second component member so as to be smaller than a width of the groove portion in the second component member, and the second component is inserted into the groove portion in the first component member after the protrusion is inserted into the groove portion in the first component member. Pressure is applied to the second component member such that the width of the protrusion in the member is increased.

上記課題を解決する第二の発明に係る固定子鉄心の製造方法は、第一の発明に係る固定子鉄心の製造方法において、前記第二構成部材が、電磁鋼板を複数枚積層することにより構成されるものであることを特徴とする。   A method for manufacturing a stator core according to a second invention for solving the above-described problem is the method for manufacturing a stator core according to the first invention, wherein the second component member is formed by laminating a plurality of electromagnetic steel sheets. It is characterized by being.

上記課題を解決する第三の発明に係る固定子鉄心の製造方法は、第二の発明に係る固定子鉄心の製造方法において、前記湾曲部が、前記電磁鋼板を所定の形状に打ち抜き成形する際に形成されるものであることを特徴とする。   A method for manufacturing a stator core according to a third aspect of the present invention for solving the above-described problem is the method for manufacturing a stator core according to the second aspect, wherein the bending portion is formed by punching the electromagnetic steel sheet into a predetermined shape. It is characterized by being formed.

上記課題を解決する第四の発明に係る固定子鉄心の製造方法は、第一から第三のいずれか一つの発明に係る固定子鉄心の製造方法において、前記圧力が、前記第一構成部材および前記第二構成部材における軸方向両側に配した支持部材を介して機械的締結手段によって加えられるものであることを特徴とする。   A method for manufacturing a stator core according to a fourth aspect of the present invention for solving the above-described problem is the method for manufacturing a stator core according to any one of the first to third aspects, wherein the pressure is the first component member and The second component member is added by mechanical fastening means via support members arranged on both sides in the axial direction.

上記課題を解決する第五の発明に係る固定子鉄心の製造方法は、第一から第四のいずれか一つの発明に係る固定子鉄心の製造方法において、前記第一構成部材が、略円筒形状のヨークであり、前記第二構成部材が、前記ヨークの外周側または内周側に向かって放射状に延びるように組み付けられるティースであることを特徴とする。   A method for manufacturing a stator core according to a fifth aspect of the present invention for solving the above-described problem is the method for manufacturing a stator core according to any one of the first to fourth aspects, wherein the first component member has a substantially cylindrical shape. The second component member is a tooth assembled so as to extend radially toward the outer peripheral side or the inner peripheral side of the yoke.

第一の発明に係る固定子鉄心の製造方法によれば、第二構成部材における突部の幅が第一構成部材における溝部の幅よりも小さくなるように第二構成部材に湾曲部を形成し、第二構成部材における突部を第一構成部材における溝部に嵌入したことにより、第二構成部材における突部の幅が第一構成部材における溝部の幅よりも小さいので、第二構成部材における突部と第一構成部材における溝部とが干渉せず、容易に第一構成部材と第二構成部材とを組み付けることができる。また、第二構成部材における突部を第一構成部材における溝部に嵌入した後、第二構成部材における突部の幅が大きくするので、組み付けガタを生じさせることなく第一構成部材と第二構成部材とを組み付けることができる。   According to the method for manufacturing a stator core according to the first invention, the curved portion is formed in the second constituent member so that the width of the protrusion in the second constituent member is smaller than the width of the groove in the first constituent member. Since the protrusion of the second component is inserted into the groove of the first component, the width of the protrusion of the second component is smaller than the width of the groove of the first component. The first component member and the second component member can be easily assembled without interference between the groove portion and the groove portion of the first component member. In addition, since the protrusion of the second component is increased after the protrusion of the second component is inserted into the groove of the first component, the first component and the second component without causing assembly play. The member can be assembled.

第二の発明に係る固定子鉄心の製造方法によれば、第二構成部材が電磁鋼板を複数枚積層することにより構成されるものであることにより、薄板の電磁鋼板を湾曲させることにより、容易に湾曲部を形成することができる。   According to the method for manufacturing a stator core according to the second aspect of the invention, the second constituent member is configured by laminating a plurality of electromagnetic steel sheets, thereby easily curving a thin electromagnetic steel sheet. A curved portion can be formed.

第三の発明に係る固定子鉄心の製造方法によれば、湾曲部が電磁鋼板を所定の形状に打ち抜き成形する際に形成されるものであることにより、固定子鉄心の製造における工程数を増加させる必要がない。   According to the method for manufacturing a stator core according to the third invention, the bending portion is formed when the electromagnetic steel sheet is punched into a predetermined shape, thereby increasing the number of steps in manufacturing the stator core. There is no need to let them.

第四の発明に係る固定子鉄心の製造方法によれば、圧力が第一構成部材および第二構成部材における軸方向両側に配した支持部材を介して機械的締結手段によって加えられるものであることにより、容易に組付け作業を行うことができると共に、固定子鉄心の構造を簡易なものとすることができる。   According to the method for manufacturing a stator core according to the fourth invention, the pressure is applied by the mechanical fastening means via the support members disposed on both sides in the axial direction of the first component member and the second component member. Thus, the assembling work can be easily performed, and the structure of the stator core can be simplified.

第五の発明に係る固定子鉄心の製造方法によれば、第一構成部材が略円筒形状のヨークであり、第二構成部材がヨークの外周側または内周側に向かって放射状に延びるように組み付けられるティースであることにより、円筒形状のヨークの内周側に複数のティースを組み付けて成る分割構造の固定子鉄心の製造において、容易にヨークとティースとを組み付けることができ、組み付けガタを生じさせることなくヨークとティースとを組み付けることができる。   According to the method for manufacturing a stator core according to the fifth invention, the first component member is a substantially cylindrical yoke, and the second component member extends radially toward the outer peripheral side or the inner peripheral side of the yoke. As a result of the assembled teeth, the yoke and teeth can be easily assembled in the manufacture of a stator core with a split structure in which a plurality of teeth are assembled on the inner peripheral side of a cylindrical yoke, resulting in assembly backlash. The yoke and the teeth can be assembled without causing them.

実施例１に係る固定子鉄心の製造方法を用いて製造される製造途中の固定子を示す部分縦断面図（図３におけるＩ−Ｉ矢視断面図に相当）である。It is a fragmentary longitudinal cross-section (equivalent to II arrow sectional drawing in FIG. 3) which shows the stator in the middle of manufacture manufactured using the manufacturing method of the stator core which concerns on Example 1. FIG. 実施例１に係る固定子鉄心の製造方法を用いて製造される固定子を示す部分縦断面図（図３におけるＩ−Ｉ矢視断面図）である。It is a fragmentary longitudinal cross-section (II arrow directional cross-sectional view in FIG. 3) which shows the stator manufactured using the manufacturing method of the stator core which concerns on Example 1. FIG. 実施例１に係る固定子鉄心の製造方法を用いて製造される固定子を示す部分縦断面図（図３におけるII−II矢視断面図）である。It is a fragmentary longitudinal cross-sectional view (II-II arrow sectional drawing in FIG. 3) which shows the stator manufactured using the manufacturing method of the stator core which concerns on Example 1. FIG. 実施例１に係る固定子鉄心の製造方法を用いて製造される固定子示す横断面図である。It is a cross-sectional view which shows the stator manufactured using the manufacturing method of the stator core which concerns on Example 1. FIG. 実施例１に係る固定子鉄心の製造方法を用いて製造される固定子のティース用電磁鋼板を示す平面図である。It is a top view which shows the electromagnetic steel plate for the teeth of the stator manufactured using the manufacturing method of the stator core which concerns on Example 1. FIG. 実施例１に係る固定子鉄心の製造方法を用いて製造される固定子のティース用電磁鋼板を示す側面図である。It is a side view which shows the electromagnetic steel plate for the teeth of the stator manufactured using the manufacturing method of the stator core which concerns on Example 1. FIG.

以下に、本発明に係る固定子鉄心の製造方法の実施例について、添付図面を参照して詳細に説明する。本実施例は、本発明に係る固定子鉄心の製造方法を、円筒形状のヨーク（分割積層体）の内周側に複数のティース（分割積層体）を組み付けて成る分割構造の固定子鉄心および当該固定子鉄心を備えた固定子の製造に適用したものである。もちろん、本発明は以下の実施例に限定されず、本発明の趣旨を逸脱しない範囲で各種変更が可能であることは言うまでもない。   Embodiments of a method for manufacturing a stator core according to the present invention will be described below in detail with reference to the accompanying drawings. In this embodiment, a stator core manufacturing method according to the present invention is divided into a stator core having a split structure in which a plurality of teeth (split laminate) are assembled on the inner peripheral side of a cylindrical yoke (split laminate), and This is applied to manufacture of a stator having the stator core. Needless to say, the present invention is not limited to the following examples, and various modifications can be made without departing from the spirit of the present invention.

本発明の実施例１に係る固定子鉄心の製造方法を用いて製造される固定子鉄心および当該固定子鉄心を備える固定子の構造について、図１Ａから図４Ｂを参照して説明する。なお、図１Ａから図４Ｂにおいては、本実施例における固定子鉄心の製造方法の理解を容易にするために、湾曲状態の電磁鋼板における湾曲部の曲率半径などを誇張して示している。   A structure of a stator core manufactured using the method for manufacturing a stator core according to Example 1 of the present invention and a stator including the stator core will be described with reference to FIGS. 1A to 4B. In FIG. 1A to FIG. 4B, in order to facilitate understanding of the manufacturing method of the stator core in the present embodiment, the curvature radius of the curved portion in the electromagnetic steel sheet in the curved state is exaggerated.

図３に示すように、本実施例における固定子１は、略円筒形状のヨーク１０（第一構成部材）と当該ヨーク１０の内周側に放射状に組み付けられる複数（本実施例においては八個）のティース２０（第二構成部材）とから成る固定子鉄心３０と、当該固定子鉄心３０のティース２０に巻線４０ａが巻回されて成るコイル４０とから構成されている。   As shown in FIG. 3, the stator 1 in the present embodiment includes a substantially cylindrical yoke 10 (first constituent member) and a plurality (eight in the present embodiment) assembled radially on the inner peripheral side of the yoke 10. ) Of the teeth 20 (second constituent member) and a coil 40 formed by winding a winding 40a around the teeth 20 of the stator core 30.

図２および図３に示すように、ヨーク１０は、円環形状から成るヨーク用電磁鋼板１１を固定子１の軸方向（図２における上下方向）に複数枚積層することにより形成される。ヨーク用電磁鋼板１１には、円環形状の本体部１２の内周側に、ティース２０を組み付けるための組み付け溝部１３を形成している。   As shown in FIGS. 2 and 3, the yoke 10 is formed by laminating a plurality of yoke electromagnetic steel plates 11 having an annular shape in the axial direction of the stator 1 (vertical direction in FIG. 2). In the electromagnetic steel sheet 11 for yoke, an assembly groove portion 13 for assembling the teeth 20 is formed on the inner peripheral side of the annular main body portion 12.

ティース２０は、平板形状から成るティース用電磁鋼板２１を固定子１の軸方向に複数枚積層することにより形成される。ティース用電磁鋼板２１には、ヨーク１０に組み付けるための組み付け突部２２と、巻線４０ａを巻回してコイル４０を形成するためのティース部２３と、ヨーク１０とティース２０とを組み付けるための組み付けボルト５０（図２参照）を挿通させるためのボルト挿通穴２４とを形成している。なお、ティース２０すなわちティース用電磁鋼板２１は、その内周側の面が図示しないロータの周面と対向するように円弧形状に形成されている。   The teeth 20 are formed by laminating a plurality of electromagnetic steel plates 21 for teeth having a flat plate shape in the axial direction of the stator 1. Assembling for assembling the yoke 10 and the teeth 20 to the electromagnetic steel sheet 21 for teeth, the assembling protrusion 22 for assembling to the yoke 10, the teeth 23 for winding the winding 40a to form the coil 40, A bolt insertion hole 24 for inserting a bolt 50 (see FIG. 2) is formed. The teeth 20, that is, the electrical steel sheet 21 for teeth, is formed in an arc shape so that the inner peripheral surface faces the peripheral surface of the rotor (not shown).

また、図４Ａおよび図４Ｂに示すように、ティース用電磁鋼板２１は、組み付け前には固定子１の径方向（図４Ａにおける上下方向）に沿った稜線が形成されるように湾曲した（湾曲部が形成された）湾曲状態（図４Ａおよび図４Ｂにおいて実線で示すティース用電磁鋼板２１ｂ）であり、組み付け時には当該湾曲状態から平坦状態（図４Ａおよび図４Ｂにおいて二点鎖線で示すティース用電磁鋼板２１ａ）となるように変形させることができるものである。   As shown in FIGS. 4A and 4B, the electrical steel sheet 21 for teeth is curved so that a ridge line is formed along the radial direction of the stator 1 (vertical direction in FIG. 4A) before assembly (curved). Part is formed) in a bent state (teeth electromagnetic steel plate 21b shown by a solid line in FIGS. 4A and 4B), and when assembled, from the bent state to a flat state (teeth electromagnetic wave shown by a two-dot chain line in FIGS. 4A and 4B) The steel plate 21a) can be deformed.

そして、平坦状態のティース用電磁鋼板２１ａにおける組み付け突部２２の幅（固定子１の周方向における長さ）Ｂ22aを、ヨーク１０の組み付け溝部１３の幅（固定子１の周方向における長さ）Ｂ13と略同じ長さに形成し、湾曲状態のティース用電磁鋼板２１ｂにおける組み付け突部２２の幅（固定子１の周方向における長さ）Ｂ22bが、ヨーク１０の組み付け溝部１３の幅（固定子１の周方向における長さ）Ｂ13よりも小さくなるように湾曲させている（図３、図４Ａおよび図４Ｂ参照）。 And the width (length in the circumferential direction of the stator 1) B 22a of the assembly protrusion 22 in the electromagnetic steel sheet 21a for teeth in the flat state is set to the width (length in the circumferential direction of the stator 1) of the assembly groove portion 13 of the yoke 10. ) The width of the assembly protrusion 22 in the curved electromagnetic steel plate 21b (length in the circumferential direction of the stator 1) B 22b is approximately the same length as B 13 and the width of the assembly groove 13 of the yoke 10 and is curved so as to be smaller than (the circumferential length in the direction of the stator 1) B 13 (see FIG. 3, 4A and 4B).

よって、ティース用電磁鋼板２１が湾曲状態の場合には、ティース用電磁鋼板２１ｂの組み付け突部２２の幅Ｂ22bがヨーク用電磁鋼板１１の組み付け溝部１３の幅Ｂ13よりも小さいので、ヨーク１０とティース２０との組み付け時に、互いに干渉することなく、容易に組み付け作業を行うことができる。 Therefore, when the electrical steel sheet 21 for teeth is in a curved state, the width B 22b of the assembly protrusion 22 of the electrical steel sheet 21b for teeth is smaller than the width B 13 of the assembly groove 13 of the electromagnetic steel sheet 11 for yoke. And the teeth 20 can be assembled easily without interfering with each other.

本実施例においては、ティース用電磁鋼板２１を、図示しないプレス機によって平板形状の母材から打ち抜き成形した後に図示しないプレス機によって湾曲させることにより、図４Ａおよび図４Ｂに示すような所定寸法の瓦形状としている。もちろん、本発明における電磁鋼板は、これに限定されず、湾曲させた後に打ち抜き成形することにより所定寸法の瓦形状としても良く、一つの金型による成型工程において、打ち抜くと同時に湾曲させることにより所定寸法の瓦形状としても良い。   In this example, the electrical steel sheet 21 for teeth is punched from a flat base material by a not-shown pressing machine and then bent by a not-shown pressing machine to obtain a predetermined size as shown in FIGS. 4A and 4B. It has a tile shape. Of course, the electrical steel sheet according to the present invention is not limited to this, and may be formed into a tile shape having a predetermined dimension by being punched after being bent. It is good also as a tile shape of a size.

図２に示すように、ヨーク用電磁鋼板１１およびティース用電磁鋼板２１を、固定子１の軸方向（図２における上下方向）に複数枚積層した状態で、軸方向における両端（図２における上端および下端）にヨーク用電磁鋼板１１と同程度の大きさの円環形状を成す支持部材としてのエンドリング６０を配し、機械的締結手段としての組み付けボルト５０および組み付けナット５１によって、両側からヨーク用電磁鋼板１１およびティース用電磁鋼板２１を締め付けている。ティース用電磁鋼板２１は、組み付けボルト５０および組み付けナット５１の締結力（圧力）によって、平坦状態（固定子１として使用される状態）となる（図１Ｂ参照）。   As shown in FIG. 2, both ends in the axial direction (upper ends in FIG. 2) in a state where a plurality of electromagnetic steel sheets 11 for yokes and electromagnetic steel sheets 21 for teeth are stacked in the axial direction of the stator 1 (vertical direction in FIG. 2). And an end ring 60 as a support member having an annular shape of the same size as that of the electromagnetic steel plate 11 for the yoke, and the assembly bolt 50 and the assembly nut 51 as mechanical fastening means. The electromagnetic steel plate 11 for teeth and the electromagnetic steel plate 21 for teeth are fastened. The electrical steel sheet 21 for teeth is in a flat state (state used as the stator 1) by the fastening force (pressure) of the assembly bolt 50 and the assembly nut 51 (see FIG. 1B).

平坦状態のティース用電磁鋼板２１ａにおける組み付け突部２２の幅Ｂ22aは、ヨーク用電磁鋼板１１の組み付け溝部１３の幅Ｂ13に対して、略同寸法で形成している（図３、図４Ａおよび図４Ｂ参照）。よって、ヨーク１０とティース２０とを組み付けて、ティース用電磁鋼板２１を平坦状態とした場合に、ティース用電磁鋼板２１ａの組み付け突部２２の幅Ｂ22aがヨーク用電磁鋼板１１の組み付け溝部１３の幅Ｂ13と略同じとなるので、ヨーク１０とティース２０との組み付けにおいて、組み付けガタが生じることはない（図１Ｂ参照）。 The width B 22a of the assembly protrusion 22 in the electrical magnetic steel sheet for teeth 21a in the flat state is formed with substantially the same size as the width B 13 of the assembly groove 13 of the electromagnetic steel sheet for yoke 11 (FIGS. 3 and 4A). And FIG. 4B). Therefore, when the yoke 10 and the teeth 20 are assembled and the electrical steel sheet 21 for teeth is in a flat state, the width B 22a of the assembly projection 22 of the electrical steel sheet 21a for teeth is the width of the assembly groove 13 of the electromagnetic steel sheet 11 for yoke 11. Since it is substantially the same as the width B 13 , no assembly play occurs in the assembly of the yoke 10 and the teeth 20 (see FIG. 1B).

本実施例における固定子鉄心の製造方法を用いたヨーク１０とティース２０との組み付け手順について、図１Ａから図３を参照して説明する。   A procedure for assembling the yoke 10 and the teeth 20 using the method for manufacturing a stator core in the present embodiment will be described with reference to FIGS. 1A to 3.

まず、ヨーク用電磁鋼板１１を積層してヨーク１０を形成し、ティース用電磁鋼板２１を積層してティース２０を形成する（図１Ａ参照）。ヨーク１０に形成した組み付け溝部１３に、ティース２０の組み付け突部２２を嵌入する（図１Ａおよび図３参照）。このとき、ティース用電磁鋼板２１は、固定子１の径方向に沿った稜線が形成されるように湾曲した瓦形状であるので、ヨーク１０とティース２０との組み付け部における組み付け溝部１３の幅Ｂ13と組み付け突部２２の幅Ｂ22bには、ティース２０の湾曲分の差、すなわち、ヨーク１０の組み付け溝部１３に対してティース２０の組み付け突部２２の両側（図１Ａにおける左右側）にはそれぞれ隙間ｄが作られる。 First, the yoke 10 is formed by stacking the electromagnetic steel sheets 11 for the yoke, and the teeth 20 are formed by stacking the electromagnetic steel sheets 21 for the teeth (see FIG. 1A). The assembly protrusion 22 of the teeth 20 is inserted into the assembly groove 13 formed in the yoke 10 (see FIGS. 1A and 3). At this time, the electrical steel sheet 21 for teeth has a tile shape that is curved so that a ridge line along the radial direction of the stator 1 is formed, and therefore, the width B of the assembly groove portion 13 in the assembly portion of the yoke 10 and the teeth 20. 13 and the width B 22b of the assembling protrusion 22 are different in the curvature of the teeth 20, that is, on both sides of the assembling protrusion 22 of the teeth 20 with respect to the assembling groove 13 of the yoke 10 (left and right sides in FIG. 1A) A gap d is created for each.

よって、ヨーク１０の組み付け溝部１３にティース２０の組み付け突部２２を嵌入する際に、ヨーク１０とティース２０とが干渉することはなく、ヨーク１０とティース２０との組み付け作業において手間が掛かることはない。もちろん、ティース用電磁鋼板２１を一枚または複数枚ずつに分け、ヨーク１０の組み付け溝部１３に、ティース用電磁鋼板２１の組み付け突部２２を順次嵌入させるようにしても良い。   Therefore, when the assembly protrusion 22 of the tooth 20 is fitted into the assembly groove portion 13 of the yoke 10, the yoke 10 and the tooth 20 do not interfere with each other, and it takes time and labor to assemble the yoke 10 and the tooth 20. Absent. Of course, the electrical steel sheet 21 for teeth may be divided into one or more, and the assembly protrusions 22 of the electrical steel sheet 21 for teeth may be sequentially inserted into the assembly groove 13 of the yoke 10.

次に、ヨーク１０およびティース２０の軸方向両端にエンドリング６０を配し、エンドリング６０に形成したボルト挿通穴６１およびティース２０に形成したボルト挿通穴２４に組み付けボルト５０を一方側から挿通させると共に、他方側に突出した組み付けボルト５０の先端部５０ａに組み付けナット５１を螺合させる（図１Ａおよび図２参照）。   Next, end rings 60 are disposed at both ends of the yoke 10 and the teeth 20 in the axial direction, and the assembly bolts 50 are inserted from one side into the bolt insertion holes 61 formed in the end ring 60 and the bolt insertion holes 24 formed in the teeth 20. At the same time, the assembly nut 51 is screwed into the tip 50a of the assembly bolt 50 protruding to the other side (see FIGS. 1A and 2).

組み付けボルト５０および組み付けナット５１を所定の締結力で締め付け、エンドリング６０がヨーク１０の両端面１４に接するように、すなわち、ティース２０が湾曲形状から平坦形状となって組み付け突部２２の幅Ｂ22aが大きくなるように、ティース２０に軸方向の圧力を加える（図１Ｂ参照）。 The assembly bolt 50 and the assembly nut 51 are tightened with a predetermined fastening force so that the end ring 60 is in contact with both end faces 14 of the yoke 10, that is, the teeth 20 are changed from a curved shape to a flat shape, and the width B of the assembly protrusion 22. An axial pressure is applied to the teeth 20 so that 22a becomes large (see FIG. 1B).

ティース２０は、組み付けボルト５０および組み付けナット５１の締結力によって、湾曲状態から平坦状態に変形されると、ティース２０（ティース用電磁鋼板２１ａ）の組み付け突部２２の幅Ｂ22aがヨーク１０の組み付け溝部１３の幅Ｂ13と略同一となり、組み付けガタのない固定子鉄心３０すなわち当該固定子鉄心３０を備えた固定子１を製造することができる（図３、図４Ａおよび図４Ｂ参照）。 When the teeth 20 are deformed from the curved state to the flat state by the fastening force of the assembly bolt 50 and the assembly nut 51, the width B 22a of the assembly protrusion 22 of the teeth 20 (the electrical steel plate 21a for teeth) is assembled to the yoke 10. A stator core 30 having substantially the same width B 13 as the groove 13 and having no assembled play, that is, the stator 1 including the stator core 30 can be manufactured (see FIGS. 3, 4A, and 4B).

平坦状態のティース用電磁鋼板２１ａにおける組み付け突部２２の幅Ｂ22aを、ヨーク用電磁鋼板１１の組み付け溝部１３の幅Ｂ13よりも大きくなるように形成した場合には、ティース用電磁鋼板２１を湾曲状態から平坦状態へと変形させた際に、ティース用電磁鋼板２１の組み付け突部２２がヨーク用電磁鋼板１１の組み付け溝部１３に密着した状態となるので、ヨーク用電磁鋼板１１とティース用電磁鋼板２１との結合力を得ることができる。 When the width B 22a of the assembly protrusion 22 in the electrical magnetic steel sheet 21a for teeth in the flat state is formed to be larger than the width B 13 of the assembly groove 13 of the electromagnetic steel sheet 11 for yoke, the electrical steel sheet 21 for teeth is When deformed from the curved state to the flat state, the assembly protrusion 22 of the electrical steel sheet for teeth 21 comes into close contact with the assembly groove 13 of the electromagnetic steel sheet for yoke 11, so that the electromagnetic steel sheet for yoke 11 and the electromagnetic for teeth Bonding strength with the steel plate 21 can be obtained.

よって、例えば、ヨーク用電磁鋼板１１の組み付け溝部１３にティース用電磁鋼板２１の組み付け突部２２を配した後に、ティース用電磁鋼板２１を固定子鉄心３０の軸方向両側からプレス等で圧力を加えることにより、本実施例のような機械的締結手段としての組み付けボルト５０および組み付けナット５１を使用することなく、ヨーク用電磁鋼板１１とティース用電磁鋼板２１とを組み付けることができる。   Therefore, for example, after the assembly protrusion 22 of the electrical steel sheet 21 for teeth is arranged in the assembly groove 13 of the electrical steel sheet 11 for yoke 11, pressure is applied to the electrical steel sheet 21 for teeth from both sides in the axial direction of the stator core 30 with a press or the like. Accordingly, the yoke electrical steel sheet 11 and the teeth electrical steel sheet 21 can be assembled without using the assembly bolt 50 and the assembly nut 51 as mechanical fastening means as in this embodiment.

また、本発明における電磁鋼板の形状は、本実施例におけるティース用電磁鋼板２１のような瓦形状に限定されず、ヨーク１０とティース２０との組み付け作業を容易にすることができれば良い。つまり、本実施例のように、ティース用電磁鋼板２１の全体を湾曲させずに、例えば、組み付け突部２２の周方向における幅Ｂ22bがヨーク用電磁鋼板１１の組み付け溝部１３の周方向における幅Ｂ13よりも小さくなるように、ティース用電磁鋼板２１に湾曲部を形成、すなわち、ティース用電磁鋼板２１のティース部２３を平坦として組み付け突部２２のみを湾曲させても良い。 In addition, the shape of the electrical steel sheet in the present invention is not limited to the tile shape like the electrical steel sheet 21 for teeth in the present embodiment, and it is sufficient that the assembly work between the yoke 10 and the teeth 20 can be facilitated. That is, as in the present embodiment, without bending the entire electrical steel sheet 21 for teeth, for example, the width B 22b in the circumferential direction of the assembly protrusion 22 is the width in the circumferential direction of the assembly groove part 13 of the electromagnetic steel sheet 11 for yoke. A curved portion may be formed in the electrical steel sheet 21 for teeth so as to be smaller than B 13 , that is, only the protrusions 22 may be curved with the teeth part 23 of the electrical steel sheet 21 for teeth flat.

本発明に係る固定子鉄心の製造方法は、本実施例のように、円筒形状のヨーク１０の内周側にティース２０を組み付けて成る分割構造の固定子鉄心３０の製造に適用したものに限定されず、円弧形状のヨーク部とティース部とを一体的に併せ持つ分割鉄心を周方向に組み付けて成る分割構造の固定子鉄心の製造に適用しても良い。   The manufacturing method of the stator core according to the present invention is limited to the manufacturing method of the stator core 30 having a divided structure in which the teeth 20 are assembled on the inner peripheral side of the cylindrical yoke 10 as in this embodiment. Alternatively, the present invention may be applied to the manufacture of a stator core having a split structure in which a split iron core having an arc-shaped yoke portion and a tooth portion integrally assembled is assembled in the circumferential direction.

つまり、本発明に係る固定子鉄心の製造方法を、円弧形状のヨーク部とティース部とを一体的に併せ持つ分割鉄心を周方向に組み付けて成る分割構造の固定子鉄心の製造に適用した場合には、分割鉄心に組み付け突部と組み付け溝部を形成し、組み付け突部の幅を組み付け溝部の幅よりも小さくなるように分割鉄心における組み付け突部を湾曲させて湾曲部を形成し、周方向における分割鉄心の組み付けを行った後に当該分割鉄心に圧力を加えることにより、本実施例と同様の作用効果を得ることができる。   That is, when the method for manufacturing a stator core according to the present invention is applied to the manufacture of a stator core having a split structure in which a split core having an arc-shaped yoke portion and a teeth portion is integrally assembled in the circumferential direction. Forming an assembling protrusion and an assembling groove on the split iron core, and curving the assembling protrusion on the split iron core so that the width of the assembling protrusion is smaller than the width of the assembling groove, thereby forming a curved portion in the circumferential direction. By applying pressure to the divided iron core after assembling the divided iron core, it is possible to obtain the same effects as in the present embodiment.

１ 固定子
１０ ヨーク（第一構成部材）
１１ ヨーク用電磁鋼板
１２ ヨーク用電磁鋼板の本体部
１３ ヨーク用電磁鋼板の組み付け溝部（組み付け用の溝部）
１４ ヨークの端面
２０ ティース（第二構成部材）
２１ ティース用電磁鋼板
２２ ティース用電磁鋼板の組み付け突部（組み付け用の突部）
２３ ティース用電磁鋼板のティース部
２４ ティース用電磁鋼板の挿通穴
３０ 固定子鉄心
４０ コイル
５０ 組み付けボルト（機械的締結手段）
５０ａ 組み付けボルトの先端部
５１ 組み付けナット（機械的締結手段）
６０ エンドリング（支持部材） 1 Stator 10 Yoke (first component)
11 Magnetic Steel Sheet for Yoke 12 Main Body of Magnetic Steel Sheet for Yoke 13 Assembly Groove of Magnetic Steel Sheet for Yoke (Groove for Assembly)
14 End face of yoke 20 Teeth (second component)
21 Electrical Steel Sheet for Teeth 22 Assembly Protrusion of Magnetic Steel Sheet for Teeth (Protrusion for Assembly)
23 Teeth part of electrical steel sheet for teeth 24 Insertion hole 30 of electrical steel sheet for teeth 30 Stator core 40 Coil 50 Assembly bolt (mechanical fastening means)
50a Tip of assembly bolt 51 Assembly nut (mechanical fastening means)
60 End ring (support member)

Claims (5)

第一構成部材に形成した組み付け用の溝部に、第二構成部材に形成した組み付け用の突部を嵌入することにより、分割構造の固定子鉄心を構成する前記第一構成部材と前記第二構成部材とを組み付ける固定子鉄心の製造方法であって、
前記第二構成部材における前記突部の幅が前記第一構成部材における前記溝部の幅よりも小さくなるように前記第二構成部材に湾曲部を形成し、前記第二構成部材における前記突部を前記第一構成部材における前記溝部に嵌入した後、前記第二構成部材における前記突部の幅が大きくなるように前記第二構成部材に圧力を加える
ことを特徴とする固定子鉄心の製造方法。 The first component member and the second component constituting the split structure stator core by inserting the assembly protrusion formed in the second component member into the assembly groove portion formed in the first component member. A method for manufacturing a stator core for assembling members,
A curved portion is formed in the second component member such that a width of the protrusion in the second component member is smaller than a width of the groove portion in the first component member, and the protrusion in the second component member is A method of manufacturing a stator core, comprising: applying pressure to the second component member so that a width of the protrusion in the second component member is increased after being fitted into the groove portion in the first component member. 前記第二構成部材が、電磁鋼板を複数枚積層することにより構成されるものである
ことを特徴とする請求項１に記載の固定子鉄心の製造方法。 The method for manufacturing a stator core according to claim 1, wherein the second component member is configured by laminating a plurality of electromagnetic steel plates. 前記湾曲部が、前記電磁鋼板を所定の形状に打ち抜き成形する際に形成されるものである
ことを特徴とする請求項２に記載の固定子鉄心の製造方法。 The method for manufacturing a stator core according to claim 2, wherein the curved portion is formed when the electromagnetic steel sheet is stamped and formed into a predetermined shape. 前記圧力が、前記第一構成部材および前記第二構成部材における軸方向両側に配した支持部材を介して機械的締結手段によって加えられるものである
ことを特徴とする請求項１から請求項３のいずれか一項に記載の固定子鉄心の製造方法。 The said pressure is applied by a mechanical fastening means via the supporting member distribute | arranged to the axial direction both sides in said 1st structural member and said 2nd structural member. The manufacturing method of the stator core as described in any one of Claims. 前記第一構成部材が、略円筒形状のヨークであり、
前記第二構成部材が、前記ヨークの外周側または内周側に向かって放射状に延びるように組み付けられるティースである
ことを特徴とする請求項１から請求項４のいずれか一項に記載の固定子鉄心の製造方法。 The first component member is a substantially cylindrical yoke;
5. The fixing according to claim 1, wherein the second component member is a tooth that is assembled so as to extend radially toward the outer peripheral side or the inner peripheral side of the yoke. A manufacturing method of a child iron core.
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