JPH044819B2 - - Google Patents
Info
- Publication number
- JPH044819B2 JPH044819B2 JP61079013A JP7901386A JPH044819B2 JP H044819 B2 JPH044819 B2 JP H044819B2 JP 61079013 A JP61079013 A JP 61079013A JP 7901386 A JP7901386 A JP 7901386A JP H044819 B2 JPH044819 B2 JP H044819B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- laminated
- annealing
- die
- cores
- 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 - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 238000000137 annealing Methods 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 5
- 238000004512 die casting Methods 0.000 description 9
- 238000004804 winding Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000003475 lamination Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/09—Magnetic cores comprising laminations characterised by being fastened by caulking
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は電動機の積層鉄心製造方法に関し、
特に、金型で鉄心を打抜いた後、その打抜いた鉄
心を予め定める枚数だけ金型内で積層し、焼鈍す
ることによつて固定子や回転子の積層鉄心を製造
するような電動機の積層鉄心製造方法に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a method for manufacturing a laminated core for an electric motor.
In particular, for electric motors, the laminated cores for stators and rotors are manufactured by punching the core with a die, then laminating a predetermined number of the punched cores in the die and annealing them. This invention relates to a method for manufacturing a laminated core.
［従来の技術］
電動機の固定子や回転子などに用いられる積層
鉄心は、電磁鋼板を金型で打抜いた後、積層して
形成される。近年では、金型で鉄心を打抜いた
後、打抜いた鉄心を予め定める枚数だけ金型内で
かしめて積層を行なう製造方法が用いられてい
る。この場合、金型内では、完全に鉄心のかしめ
は行なわれず、金型から取出されて再度プレスす
ることにより、かしめを完全に行なつて、規定の
積厚となるようにしている。[Prior Art] A laminated core used for a stator, rotor, etc. of an electric motor is formed by punching electromagnetic steel plates with a die and then laminating them. In recent years, a manufacturing method has been used in which a core is punched out using a die, and then a predetermined number of the punched cores are caulked in the die and laminated. In this case, the iron core is not completely caulked in the mold, but is removed from the mold and pressed again to fully caulk it and achieve a specified stacking thickness.
このような積厚の管理は、打抜いた鉄板の枚数
により行なわれるため、打抜いた後の鉄板の板厚
のばらつきにより、積厚も影響を受けることにな
る。しかも、積層鉄心を完全にかしめた後でなけ
れば、正確な積厚を測定することができない。積
層鉄心を完全にかしめた後、規定の積厚でなけれ
ば、規定の積厚となるように、その補正を鉄心を
追加または削減することによつて行なつている。 Since such stacking thickness management is performed by the number of punched steel plates, the stacking thickness is also affected by variations in the thickness of the steel plates after punching. Furthermore, the lamination thickness cannot be accurately measured until the laminated core is completely caulked. After the laminated core is completely caulked, if the laminated thickness is not the specified thickness, correction is made by adding or subtracting the core so that the laminated thickness is the specified thickness.
上述のごとく構成された積層鉄心は打抜き歪を
除去するために、焼鈍する必要があるが、焼鈍の
効果を上げるためには、最終的なかしめを行なう
前に焼鈍を行なうのが望ましい。 The laminated core constructed as described above needs to be annealed to remove punching strain, but in order to increase the effect of annealing, it is desirable to perform annealing before final caulking.
［発明が解決しようとする問題点］
ところで、焼鈍後に、最終的にかしめを行なう
と、積厚が規定値よりも不足した場合に、焼鈍に
より鉄心が軟化してしまうため、追加のかしめを
行なうことが困難となる。通常、回転子となる積
層鉄心の両側にはダイカストが形成されるが、積
層鉄心の積厚が不足していると、ダイカスト成形
特に型に合わず、ダイカストの成形が困難とな
る。[Problems to be Solved by the Invention] By the way, when caulking is finally performed after annealing, if the stacking thickness is less than a specified value, the iron core will be softened by annealing, so additional caulking is performed. This becomes difficult. Usually, die-casting is formed on both sides of the laminated core that becomes the rotor, but if the laminated core is not thick enough, it will not fit the die-casting mold, and it will be difficult to mold the die-casting.
一方、固定子となる積層鉄心のスロツトルに
は、巻線が装着されるが、巻線は予め積層鉄心の
規定の長さのスロツトルに挿入できるように予め
巻回されていて、積層鉄心の形成後にスロツトル
に挿入される。しかし、積層鉄心の積厚が規定値
よりも長ければ巻線を挿入できなくなり、積厚が
規定値よりも短かければ巻線がだぶついてしま
う。 On the other hand, a winding is attached to the throttle of the laminated core, which becomes the stator. It is then inserted into the throttle. However, if the stacking thickness of the laminated core is longer than a specified value, the winding cannot be inserted, and if the stacking thickness is shorter than the specified value, the winding will overlap.
このために、従来は積厚が不足したものは不良
品として廃棄しなければならず、損失が大きくな
る。積厚が規定値よりも不足するのを避けようと
すれば、予め積厚を大きくしておけばよいが、今
度は積厚を規定値にするために、鉄心を取除くも
のが増加し、この面においても損失が増大する。 For this reason, conventionally, products with insufficient lamination thickness must be discarded as defective products, resulting in large losses. If you want to avoid the stacking thickness being less than the specified value, you can increase the stacking thickness in advance, but now, in order to bring the stacking thickness to the specified value, more and more iron cores are being removed. In this aspect as well, losses increase.
それゆえに、この発明の主たる目的は、規定の
積厚の積層鉄心を製造でき、回転子として用いた
場合に両側にダイカストを良好に形成でき、固定
子として用いた場合に巻線を良好に装着できるよ
うな電動機の積層鉄心製造方法を提供することで
ある。 Therefore, the main objects of this invention are to be able to manufacture a laminated core with a specified thickness, to be able to form die castings on both sides in a good manner when used as a rotor, and to be able to properly attach windings when used as a stator. It is an object of the present invention to provide a method for manufacturing a laminated iron core for an electric motor.
［課題を解決するための手段］
この発明は金型で鉄心を打抜いた後、打抜いた
鉄心を予め定める枚数だけ金型内で積層し、焼鈍
することによつて電動機の積層鉄心を形成する電
動機の積層鉄心製造方法であつて、焼鈍後の積層
鉄心の寸法が予め定める寸法よりも短い場合に、
未焼鈍の鉄心を重ね合わせることにより、積層鉄
心の寸法を予め定める寸法となるように調整し、
焼鈍後の積層鉄心の寸法が予め定める寸法よりも
長い場合には長い寸法だけ鉄心を剥がして、予め
定める寸法となるように調整するものである。[Means for Solving the Problems] This invention forms a laminated iron core for an electric motor by punching an iron core with a die, then stacking a predetermined number of the punched iron cores in the die and annealing them. A method for manufacturing a laminated core for an electric motor, in which the dimensions of the laminated core after annealing are shorter than predetermined dimensions,
By overlapping the unannealed cores, the dimensions of the laminated core are adjusted to predetermined dimensions.
If the dimensions of the laminated core after annealing are longer than the predetermined dimensions, the core is peeled off by the longer dimension and adjusted to the predetermined dimensions.
［作用］
この発明にかかる電動機の積層鉄心製造方法
は、焼鈍後の積層鉄心の寸法が規定値よりも短け
れば未焼鈍の鉄心を重ね合わせ、積層鉄心の寸法
が規定値よりも長ければ長い寸法だけ鉄心を剥が
して規定値となるようにすることによつて、積層
鉄心両側へのダイカストの成形が良好となるとと
もに巻線の装着が容易となる。[Function] In the method for manufacturing a laminated core for an electric motor according to the present invention, if the dimensions of the laminated core after annealing are shorter than a specified value, the unannealed cores are overlapped, and if the dimensions of the laminated core after annealing are longer than the specified value, the unannealed cores are overlapped. By peeling off the core to the specified value, die casting on both sides of the laminated core becomes better and the windings can be easily attached.
［発明の実施例］
第１図はこの発明によつて形成された固定子鉄
心の側面図であり、第２図は同じく平面図であ
る。[Embodiments of the Invention] FIG. 1 is a side view of a stator core formed according to the present invention, and FIG. 2 is a plan view thereof.
第１図および第２図において、積層鉄心１は複
数枚の鉄心２，２…が積層されて構成される。こ
の鉄心２は金型によつて電磁鋼板を第２図に示す
ような形状に打抜かれるとともに、切込２１が形
成される。そして、金型内でこのような鉄心２，
２…が規定の積厚ｔとなるように複数枚かしめら
れる。かしめられた積層鉄心１は焼鈍され、プレ
スによつて完全にかしめられる。そして、そのと
きの積厚が規定値ｔ以下であれば、焼鈍前の鉄心
３を重ね合わせ、積厚が規定値ｔとなるように調
節する。なお、焼鈍前の鉄心３は金型内でかしめ
られた積層鉄心１を各鉄心２ごとにばらすことに
よつて、この鉄心を用いることができる。 In FIGS. 1 and 2, a laminated core 1 is constructed by laminating a plurality of cores 2, 2, . . . . This iron core 2 is punched out of an electromagnetic steel sheet using a die into the shape shown in FIG. 2, and a notch 21 is formed therein. Then, in the mold, such iron core 2,
A plurality of sheets 2... are caulked so that they have a specified stacking thickness t. The caulked laminated iron core 1 is annealed and completely caulked by a press. If the stacking thickness at that time is less than the specified value t, the iron cores 3 before annealing are overlapped and the stacking thickness is adjusted to the specified value t. Note that the core 3 before annealing can be used by separating the laminated core 1 caulked in a mold into individual cores 2.
第３図はこの発明によつて形成された回転子鉄
心の側面図であり、第４図は同じく平面図であ
る。この第３図および第４図に示した実施例にお
いても、前述の第１図および第２図と同様にして
積層された回転子鉄心４を形成する。すなわち、
回転子鉄心４は複数の鉄心５を積層して構成され
る。各鉄心５は金型によつて電磁鋼板から打抜く
ことによつて形成される。このとき、各鉄心５に
は複数の切込５２とスロツトのための透孔５１と
が同時に形成される。そして、金型内で複数の鉄
心５が積層され、かしめられる。こしめられた回
転子鉄心４は金型から取出され、焼鈍される。そ
して、焼鈍後に完全にかしめたときの積厚ｔが規
定値よりも小さければ、焼鈍前の鉄心６を複数枚
積重ね、積厚が規定値ｔと一致するように調節す
る。 FIG. 3 is a side view of a rotor core formed according to the present invention, and FIG. 4 is a plan view of the same. In the embodiment shown in FIGS. 3 and 4 as well, the laminated rotor core 4 is formed in the same manner as in FIGS. 1 and 2 described above. That is,
The rotor core 4 is constructed by laminating a plurality of cores 5. Each core 5 is formed by punching out an electromagnetic steel sheet using a die. At this time, a plurality of notches 52 and through holes 51 for slots are simultaneously formed in each core 5. Then, a plurality of cores 5 are stacked and caulked within the mold. The stiffened rotor core 4 is taken out from the mold and annealed. If the stacking thickness t when completely caulked after annealing is smaller than the specified value, a plurality of cores 6 before annealing are stacked and the stacking thickness is adjusted to match the specified value t.
第５図は第３図に示した回転子鉄心にダイカス
トを取付けた状態を示す側面図であり、第６図は
同じく平面図である。 FIG. 5 is a side view showing a state in which die casting is attached to the rotor core shown in FIG. 3, and FIG. 6 is a plan view of the same.
前述の第３図および第４図に示したように、回
転子鉄心４の積厚が規定値ｔと一致するように調
節した後、ダイカスト７が形成されて、回転子鉄
心が完成される。 As shown in FIGS. 3 and 4 above, after the stacking thickness of the rotor core 4 is adjusted to match the specified value t, the die casting 7 is formed to complete the rotor core.
［発明の効果］
以上のように、この発明によれば、焼鈍後の積
層鉄心の積厚が予め定める値よりも短い場合に、
未焼鈍の鉄心を重ね合わせることにより、積層鉄
心の積厚を規定値となるように調整し、焼鈍後の
積層鉄心の寸法が規定値よりも長ければ長い寸法
だけ鉄心を剥がして規定値となるように調整する
ことによつて、型に嵌込んで積層鉄心を両側にダ
イカストを形成して回転子を形成したり、巻線を
装着して固定子を形成する上で良好な結果を得る
ことができる。しかも、積厚の不足した積層鉄心
を廃棄することなく、再使用することが可能とな
り、損失を防止できる。また、焼鈍後の積層鉄心
に未焼鈍の鉄心を重ね合わせても、未焼鈍の鉄心
は通常は１ないし３枚程度であり、積層鉄心全体
に対する比率も低いため、ほとんど問題になるこ
とはない。[Effects of the Invention] As described above, according to the present invention, when the thickness of the laminated core after annealing is shorter than a predetermined value,
By overlapping unannealed cores, the stacking thickness of the laminated core is adjusted to the specified value, and if the dimension of the laminated core after annealing is longer than the specified value, the core is peeled off by the longer dimension to reach the specified value. By adjusting the laminated iron core in the following manner, it is possible to obtain good results when fitting it into a mold and forming die-casting on both sides of the laminated iron core to form a rotor, or attaching windings to form a stator. I can do it. Moreover, it becomes possible to reuse the laminated iron core with insufficient lamination thickness without discarding it, and loss can be prevented. Furthermore, even if an unannealed core is superimposed on an annealed core, there is usually only one to three unannealed cores, and the ratio of the unannealed core to the entire core is low, so there is almost no problem.
第１図はこの発明によつて形成された固定子鉄
心の側面図である。第２図は同じく平面図であ
る。第３図はこの発明によつて形成された固定子
鉄心の側面図である。第４図は同じく平面図であ
る。第５図は第３図に示した回転子鉄心にダイカ
ストを取付けた状態を示す側面図である。第６図
は同じく平面図である。
図において、１は固定子積層鉄心、２は鉄心、
２１は切欠、３は未焼鈍の鉄心、４は回転子積層
鉄心、５は鉄心、６は未焼鈍の鉄心、５１は透
孔、５２は切欠を示す。
FIG. 1 is a side view of a stator core formed according to the present invention. FIG. 2 is also a plan view. FIG. 3 is a side view of a stator core formed according to the present invention. FIG. 4 is also a plan view. FIG. 5 is a side view showing a state in which die casting is attached to the rotor core shown in FIG. 3. FIG. 6 is also a plan view. In the figure, 1 is a stator laminated core, 2 is an iron core,
21 is a notch, 3 is an unannealed core, 4 is a rotor laminated core, 5 is an iron core, 6 is an unannealed core, 51 is a through hole, and 52 is a notch.
Claims (1)
め定める枚数だけ金型内で積層し、焼鈍すること
によつて電動機の積層鉄心を製造する電動機の積
層鉄心製造方法において、 焼鈍後の積層鉄心の寸法が予め定める寸法より
短い場合に、未焼鈍の鉄心を重ね合わせることに
より、積層鉄心の寸法を前記予め定める寸法とな
るように調整し、焼鈍後の積層鉄心の寸法が前記
予め定める寸法より長い場合には、長い寸法だけ
鉄心を剥がして前記予め定める寸法となるように
調整するようにした、電動機の積層鉄心製造方
法。[Scope of Claims] 1. A laminated iron core for an electric motor, which manufactures a laminated iron core for an electric motor by punching the iron core with a die, then laminating a predetermined number of the punched iron cores in the die and annealing them. In the manufacturing method, when the dimensions of the laminated core after annealing are shorter than the predetermined dimensions, the dimensions of the laminated core are adjusted to the predetermined dimensions by overlapping the unannealed cores, and the laminated core after annealing is adjusted to the predetermined dimensions. A method for manufacturing a laminated iron core for an electric motor, in which, when the dimensions of the iron core are longer than the predetermined dimensions, the core is adjusted to the predetermined dimensions by stripping the core by the longer dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7901386A JPS62254646A (en) | 1986-04-04 | 1986-04-04 | Manufacture of laminated core of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7901386A JPS62254646A (en) | 1986-04-04 | 1986-04-04 | Manufacture of laminated core of motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62254646A JPS62254646A (en) | 1987-11-06 |
| JPH044819B2 true JPH044819B2 (en) | 1992-01-29 |
Family
ID=13678061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7901386A Granted JPS62254646A (en) | 1986-04-04 | 1986-04-04 | Manufacture of laminated core of motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62254646A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5418186B2 (en) * | 2009-12-02 | 2014-02-19 | 株式会社安川電機 | Laminated core manufacturing apparatus and laminated core manufacturing method |
| JP6164039B2 (en) * | 2013-10-21 | 2017-07-19 | アイシン・エィ・ダブリュ株式会社 | Manufacturing method of laminated iron core |
| CN108306466A (en) * | 2018-01-22 | 2018-07-20 | 安徽美芝制冷设备有限公司 | The manufacturing method of motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58198148A (en) * | 1982-05-12 | 1983-11-18 | Sanyo Electric Co Ltd | Deformation prevention for stator core |
-
1986
- 1986-04-04 JP JP7901386A patent/JPS62254646A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58198148A (en) * | 1982-05-12 | 1983-11-18 | Sanyo Electric Co Ltd | Deformation prevention for stator core |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62254646A (en) | 1987-11-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |