JPH09107665A - Manufacture of motor casing - Google Patents
Manufacture of motor casingInfo
- Publication number
- JPH09107665A JPH09107665A JP20980596A JP20980596A JPH09107665A JP H09107665 A JPH09107665 A JP H09107665A JP 20980596 A JP20980596 A JP 20980596A JP 20980596 A JP20980596 A JP 20980596A JP H09107665 A JPH09107665 A JP H09107665A
- Authority
- JP
- Japan
- Prior art keywords
- cup body
- bearing
- cylinder
- motor casing
- cylindrical portion
- 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.)
- Pending
Links
Landscapes
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明はシリーズモータな
どのステーターと、ロータとからなるモータ本体を内包
する金属板製のモータケーシングの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a motor casing made of a metal plate, which contains a motor body including a stator such as a series motor and a rotor.
【０００２】[0002]
【従来の技術】図４は従来のシリーズモータを示し、ス
テータ１と、モータ軸３を有するロータ２は、軸方向の
両端から開放部を対向させて被せた２つの円筒形のカッ
プ体４，４からなるモータケーシングが内包し、ステー
タの外周近くの軸方向切欠部を通って各端部が各カップ
体の底を貫通する複数本（通常は１８０°の位相で２
本）のボルト５と、ボルトの各端部に螺装したナット５
´がカップ体４，４を突き合わせた状態に固定する。各
カップ体は底の中央に軸受６，６を嵌合する一体の収容
筒部７，７を有し、そこに嵌合した軸受６，６によりモ
ータ軸３を支持する。各カップ体の底の外面には円板８
を同心状にスポット溶接して収容筒部の外端７ａを塞
ぎ、収容筒部に嵌合した軸受が外に脱出するのを阻止す
る。そして、円板８の一方には貫通孔８´が開設してあ
り、そこからモータ軸３が外に突出する。尚、カップ体
の一方にはモータを機器に取付けるための取付台９を、
リベットをかしめるなどして固定する。向かい合ったカ
ップ体４，４は同じもので、薄鋼板をプレス加工した成
形品である。2. Description of the Related Art FIG. 4 shows a conventional series motor, in which a stator 1 and a rotor 2 having a motor shaft 3 are covered with two cylindrical cup bodies 4, which are covered with open portions facing each other from both axial ends. A motor casing consisting of 4 is enclosed, and each end passes through the axial notch near the outer circumference of the stator and each end penetrates the bottom of each cup body (usually 2 at 180 ° phase).
Book) and a nut 5 screwed on each end of the bolt
'Fixes the cup bodies 4 and 4 in abutted condition. Each cup body has an integral housing cylinder portion 7, 7 in which a bearing 6, 6 is fitted at the center of the bottom, and the motor shaft 3 is supported by the bearing 6, 6 fitted therein. Disk 8 on the outer surface of the bottom of each cup body
Are concentrically spot-welded to close the outer end 7a of the housing cylinder, and prevent the bearing fitted to the housing cylinder from escaping outside. A through hole 8 'is formed in one side of the disk 8, from which the motor shaft 3 projects outward. A mounting table 9 for mounting the motor to the device is provided on one side of the cup body.
Secure with rivets or the like. The facing cup bodies 4, 4 are the same, and are formed by pressing a thin steel plate.
【０００３】[0003]
【発明が解決しようとする課題】上記従来のカップ体４
の底にある一体の収容筒部７は底の中央部をカップ体の
内部に向かって円筒形にプレスでしぼって形成してあ
り、収容筒部７の外端７ａは円板８が塞いでいるため、
モータを組立てる際はカップ体の内部に開放した収容筒
部の内端７ｂから筒内に軸受６を嵌め入れる。収容筒部
７をしぼる際の円筒型は型抜きの必要上、僅かにテーパ
が付いて居り、細い方の端部をカップ体の底に外から挿
入して収容筒部を加工する。従って、収容筒部７は外端
７ａの内径が、内端７ｂの内径よりも１０μｍ程大にな
る。そして、筒内に嵌め入れる軸受６の外径は内端７ｂ
の内径Ｒよりも僅かに小であるから収容筒部に入れた軸
受６の回りには、図５に誇張して示したように外端７ａ
に向かって拡大する円錐形の空隙１０が生じ、これによ
って軸受は収容筒部内で大きくガタ付き、モータ軸３は
３０μｍ程度の芯振れを起こし、モータの機能低下の原
因になる。更に、収容筒部７の肉厚はカップ体の底に較
べて薄くなるため強度が劣り、軸受を強力に保持できな
い。又、カップ体４を製作するにはプレス加工以外に円
板８を作り、これにスポット溶接する溶接工程も必要で
あり、製作に手数がかゝる。DISCLOSURE OF THE INVENTION The above conventional cup body 4
Is formed by pressing a central portion of the bottom toward the inside of the cup body into a cylindrical shape by pressing, and an outer end 7a of the housing cylindrical portion 7 is closed by a disk 8. Because
When assembling the motor, the bearing 6 is fitted into the cylinder from the inner end 7b of the housing cylinder part opened inside the cup body. The cylindrical mold for squeezing the housing cylinder 7 is slightly tapered because of the necessity of die-cutting, and the thin end is inserted from the outside into the bottom of the cup body to process the housing cylinder. Therefore, the inner diameter of the outer end 7a of the housing cylinder 7 is about 10 μm larger than the inner diameter of the inner end 7b. The outer diameter of the bearing 6 fitted in the cylinder is the inner end 7b.
Since it is slightly smaller than the inner diameter R of the bearing 6, the outer end 7a is surrounded by the outer circumference 7a of the bearing 6 placed in the accommodating cylinder as exaggeratedly shown in FIG.
As a result, a conical air gap 10 is formed, which expands toward the center of the housing. This causes the bearing to rattle largely in the housing cylinder portion, causing the motor shaft 3 to run out of the core by about 30 μm, which causes a reduction in the function of the motor. Furthermore, since the thickness of the housing cylinder 7 is thinner than the bottom of the cup body, the strength is inferior and the bearing cannot be held strongly. Further, in order to manufacture the cup body 4, in addition to press working, a disc 8 is also required to be welded by spot welding, which is troublesome to manufacture.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明は、円板
８を打抜いてスポット溶接する溶接工程を必要とせず、
プレス工程だけで製造でき、それでいて軸受をガタ付き
少なく、しかも強力に保持できるようにしたのである。Therefore, the present invention does not require a welding step of punching the disk 8 and spot welding,
It can be manufactured only by the pressing process, yet the bearing can be held firmly and firmly.
【０００５】[0005]
【発明の実施の形態】この発明のモータケーシングの製
造方法は、平鋼板を金型Ａ、Ａ′で絞り加工して、底１
２が球面であるカップ体４とする第１工程、そのカップ
体４を金型Ｂ、Ｂ′で絞り加工して上記球面の底１２を
中央に有底円筒部１７が突出した平底にする第２工程、
次いで金型Ｃ、Ｃ′を使用して上記有底円筒部１７をカ
ップ体の平底中央にめり込ませることにより、上記円筒
部１７の筒壁を折返した二重壁にし、該円筒部１７の底
をカップ体の平底とほぼ同一面に揃える第３工程、及び
金型Ｄ、Ｄ′を使用して、上記円筒部１７の折返し二重
壁の内外壁１３、１４を密着させて軸受収容筒１１に成
形すると同時にモータケーシング用カップ体として仕上
げる第４工程から成ることを特徴とする。BEST MODE FOR CARRYING OUT THE INVENTION In the method for manufacturing a motor casing of the present invention, a flat steel plate is drawn by dies A and A'and the bottom 1
The first step is to make the cup body 4 having a spherical surface 2, and the cup body 4 is drawn by the dies B and B'to form a flat bottom with the bottomed cylindrical portion 17 protruding at the center. 2 steps,
Next, the bottomed cylindrical portion 17 is fitted into the center of the flat bottom of the cup body by using the molds C and C ', thereby making the cylindrical wall of the cylindrical portion 17 into a folded double wall. Using the third step of aligning the bottom of the cup with the flat bottom of the cup body and the molds D and D ', the inner and outer walls 13 and 14 of the folded double wall of the cylindrical portion 17 are brought into close contact with each other to accommodate the bearing. It is characterized in that it comprises a fourth step of molding into a cylinder 11 and at the same time finishing it as a motor casing cup body.
【０００６】図１，２は本発明により製作したモータケ
ーシングの一実施例で、前述の図４に示されているのと
同じ構成要素には同じ符号を付してある。図示の実施例
の軸受収容筒１１は、ケーシングのカップ体４の底１２
をカップ体内に二重に折返した内外の筒壁１３，１４で
形成され、カップ体の底１２とほゞ同一面の底１５を備
えている。収容筒１１の底１５を有する端部１１ａの内
径に対してカップ体の内部に開口した端部１１ｂの内径
は１０μｍ程度大きく、端部１１ｂから１１ａに向かっ
て僅かに先細のテーパが付いている。そして、モータ軸
３を外に突出させるカップ体の収容筒１１の底１５に
は、モータ軸を通す孔１６を開設する。1 and 2 show an embodiment of a motor casing manufactured according to the present invention, in which the same components as those shown in FIG. 4 are designated by the same reference numerals. The bearing housing cylinder 11 of the illustrated embodiment includes a bottom 12 of the cup body 4 of the casing.
Is formed by double-folded inner and outer cylindrical walls 13 and 14 in the cup body, and has a bottom 15 approximately flush with the bottom 12 of the cup body. The inner diameter of the end 11b opened inside the cup body is about 10 μm larger than the inner diameter of the end 11a having the bottom 15 of the housing cylinder 11, and a taper slightly tapered from the end 11b to 11a. . Then, a hole 16 through which the motor shaft is inserted is formed in the bottom 15 of the housing cylinder 11 of the cup body that projects the motor shaft 3 to the outside.
【０００７】板厚、例えば１．４ｍｍの平鋼板を本発明
の製法によりプレス加工して成形するには、まず図３Ａ
に示すように底１２が球面のカップ体４を金型Ａ，Ａ´
でしぼり加工する（第１工程）。次に、カップ体をトリ
ミングし、図３Ｂに示すように、球面底１２を有底円筒
部１７を中央に有する平底状態に金型Ｂ，Ｂ´でしぼり
加工する（第２工程）。それから、図３Ｃに示すように
金型Ｃ，Ｃ´を使用し、有底円筒部１７をカップ体４の
内部にめり込ませて円筒部１７の底をカップ体の底１２
とほゞ同一面にする（第３工程）。この工程で収容筒１
１を形成する折返し状の二重筒壁１３，１４が生じる。
そして、最後に、図３Ｄに示すように金型Ｄ，Ｄ´を使
用し、筒壁１３，１４を密着させて収容筒を形成すると
同時にカップ体を仕上げる（第４工程）。第２工程で有
底の円筒部１７を形成するために該筒部１７内に突入す
る金型Ｂ´の中子ｂ、第３工程で同様に有底の円筒部１
７内に突入する金型Ｃ´の中子ｃ、第４工程で収容筒１
１内に突入する金型Ｄ´の中子ｄには僅かな抜き勾配が
付けてあるので、上記円筒部ないし収容筒は底１５に向
かって前述したように１０μｍ程度の僅かな先細りのテ
ーパになる。To form a flat steel plate having a plate thickness of, for example, 1.4 mm by pressing according to the manufacturing method of the present invention, first, FIG.
As shown in FIG.
Squeeze processing (first step). Next, the cup body is trimmed, and as shown in FIG. 3B, the spherical bottom 12 is squeezed by the dies B and B'into a flat bottom state having the bottomed cylindrical portion 17 in the center (second step). Then, as shown in FIG. 3C, using the molds C and C ′, the bottomed cylindrical portion 17 is fitted into the inside of the cup body 4 so that the bottom of the cylindrical portion 17 becomes the bottom 12 of the cup body.
And almost the same surface (3rd step). In this process, the storage cylinder 1
The folded-back double cylindrical walls 13 and 14 forming 1 are formed.
Then, finally, as shown in FIG. 3D, the molds D and D'are used to close the cylindrical walls 13 and 14 to form the accommodating cylinder and at the same time finish the cup body (fourth step). The core b of the mold B'which projects into the cylindrical portion 17 to form the bottomed cylindrical portion 17 in the second step, and the bottomed cylindrical portion 1 similarly in the third step.
Core c of the mold C'which rushes into the inside of the container 7, and the containing cylinder 1 in the fourth step
Since the core d of the die D'which projects into the inside 1 is provided with a slight draft, the above-mentioned cylindrical portion or accommodating cylinder has a slight taper of about 10 μm toward the bottom 15 as described above. Become.
【０００８】[0008]
【発明の効果】本発明によりカップ体内の底１２に設け
られた軸受収容筒１１は底１５側内端部１１ａから開口
端部１１ｂに向かって僅かに内径が大になっているので
端部１１ａの内径に等しい外径の軸受６を端部１１ｂか
ら嵌め入れることができ、これにより、軸受６の収容筒
内でのガタ付きが少なくなり、モータ軸の芯振れは従来
の半分の１８μｍ以内に抑えられたと共に、軸受６がケ
ーシング外へ逃げる虞も無くなった。更に、軸受収容筒
１１は二重に折返した内外の筒壁１３、１４で形成され
ているため軸受を強力に保持する。その上、従来の図４
の円板８と、その溶接工程が不要になり、プレス工程だ
けで製造でき、生産性が著しく向上する。According to the present invention, the bearing housing cylinder 11 provided on the bottom 12 in the cup body has a slightly larger inner diameter from the inner end 11a on the bottom 15 side toward the open end 11b, and thus the end 11a. The bearing 6 having an outer diameter equal to the inner diameter of the bearing 6 can be fitted from the end portion 11b. This reduces rattling in the housing cylinder of the bearing 6 and the run-out of the motor shaft is within 18 μm, which is half of the conventional value. In addition to being suppressed, there is no fear that the bearing 6 will escape to the outside of the casing. Further, since the bearing housing cylinder 11 is formed by the double-folded inner and outer cylinder walls 13 and 14, it strongly holds the bearing. Moreover, the conventional FIG.
The circular plate 8 and the welding process therefor are unnecessary, and the manufacturing process can be remarkably improved because the circular plate 8 can be manufactured only by the pressing process.
【図１】本発明により製造したモータハウジングの一実
施例の断面図である。FIG. 1 is a sectional view of an embodiment of a motor housing manufactured according to the present invention.
【図２】図１を右側から見た正面図である。FIG. 2 is a front view of FIG. 1 as viewed from the right side.
【図３】図１のモータハウジングの成形工程図である。FIG. 3 is a process drawing of the motor housing of FIG.
【図４】従来のシリーズモータの一部を断面にした側面
図である。FIG. 4 is a side view showing a cross section of a part of a conventional series motor.
【図５】図４の収容筒部と、軸受とモータ軸の関係を示
す説明図である。5 is an explanatory diagram showing a relationship between the housing cylinder portion of FIG. 4, a bearing and a motor shaft.
４ カップ体 １１ 収容筒 １２ カップ体の底 １３ 筒壁 １４ 筒壁 １５ 収容筒の底 4 Cup Body 11 Storage Cylinder 12 Bottom of Cup Body 13 Cylinder Wall 14 Cylinder Wall 15 Bottom of Storage Cylinder
─────────────────────────────────────────────────────
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【手続補正書】[Procedure amendment]
【提出日】平成８年８月９日[Submission date] August 9, 1996
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【書類名】 明細書[Document Name] Statement
【発明の名称】 モータケーシングの製造方法Title: Method for manufacturing motor casing
【特許請求の範囲】[Claims]
【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】この発明はシリーズモータな
どのステーターと、ロータとからなるモータ本体を内包
する金属板製のモータケーシングの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a motor casing made of a metal plate, which contains a motor body including a stator such as a series motor and a rotor.
【０００２】[0002]
【従来の技術】図４は従来のシリーズモータを示し、ス
テータ１と、モータ軸３を有するロータ２は、軸方向の
両端から開放部を対向させて被せた２つの円筒形のカッ
プ体４，４からなるモータケーシングが内包し、ステー
タの外周近くの軸方向切欠部を通って各端部が各カップ
体の底を貫通する複数本（通常は１８０°の位相で２
本）のボルト５と、ボルトの各端部に螺装したナット５
´がカップ体４，４を突き合わせた状態に固定する。各
カップ体は底の中央に軸受６，６を嵌合する一体の収容
筒部７，７を有し、そこに嵌合した軸受６，６によりモ
ータ軸３を支持する。各カップ体の底の外面には円板８
を同心状にスポット溶接して収容筒部の外端７ａを塞
ぎ、収容筒部に嵌合した軸受が外に脱出するのを阻止す
る。そして、円板８の一方には貫通孔８´が開設してあ
り、そこからモータ軸３が外に突出する。尚、カップ体
の一方にはモータを機器に取付けるための取付台９を、
リベットをかしめるなどして固定する。向かい合ったカ
ップ体４，４は同じもので、薄鋼板をプレス加工した成
形品である。2. Description of the Related Art FIG. 4 shows a conventional series motor, in which a stator 1 and a rotor 2 having a motor shaft 3 are covered with two cylindrical cup bodies 4, which are covered with open portions facing each other from both axial ends. A motor casing consisting of 4 is enclosed, and each end passes through the axial notch near the outer circumference of the stator and each end penetrates the bottom of each cup body (usually 2 at 180 ° phase).
Book) and a nut 5 screwed on each end of the bolt
'Fixes the cup bodies 4 and 4 in abutted condition. Each cup body has an integral housing cylinder portion 7, 7 in which a bearing 6, 6 is fitted at the center of the bottom, and the motor shaft 3 is supported by the bearing 6, 6 fitted therein. Disk 8 on the outer surface of the bottom of each cup body
Are concentrically spot-welded to close the outer end 7a of the housing cylinder, and prevent the bearing fitted to the housing cylinder from escaping outside. A through hole 8 'is formed in one side of the disk 8, from which the motor shaft 3 projects outward. A mounting table 9 for mounting the motor to the device is provided on one side of the cup body.
Secure with rivets or the like. The facing cup bodies 4, 4 are the same, and are formed by pressing a thin steel plate.
【０００３】[0003]
【発明が解決しようとする課題】上記従来のカップ体４
の底にある一体の収容筒部７は底の中央部をカップ体の
内部に向かって円筒形にプレスでしぼって形成してあ
り、収容筒部７の外端７ａは円板８が塞いでいるため、
モータを組立てる際はカップ体の内部に開放した収容筒
部の内端７ｂから筒内に軸受６を嵌め入れる。収容筒部
７をしぼる際の円筒型は型抜きの必要上、僅かにテーパ
が付いて居り、細い方の端部をカップ体の底に外から挿
入して収容筒部を加工する。従って、収容筒部７は外端
７ａの内径が、内端７ｂの内径よりも１０μｍ程大にな
る。そして、筒内に嵌め入れる軸受６の外径は内端７ｂ
の内径Ｒよりも僅かに小であるから収容筒部に入れた軸
受６の回りには、図５に誇張して示したように外端７ａ
に向かって拡大する円錐形の空隙１０が生じ、これによ
って軸受は収容筒部内で大きくガタ付き、モータ軸３は
３０μｍ程度の芯振れを起こし、モータの機能低下の原
因になる。更に、収容筒部７の肉厚はカップ体の底に較
べて薄くなるため強度が劣り、軸受を強力に保持できな
い。又、カップ体４を製作するにはプレス加工以外に円
板８を作り、これをスポット溶接する溶接工程も必要で
あり、製作に手数がかゝる。DISCLOSURE OF THE INVENTION The above conventional cup body 4
Is formed by pressing a central portion of the bottom toward the inside of the cup body into a cylindrical shape by pressing, and an outer end 7a of the housing cylindrical portion 7 is closed by a disk 8. Because
When assembling the motor, the bearing 6 is fitted into the cylinder from the inner end 7b of the housing cylinder part opened inside the cup body. The cylindrical mold for squeezing the housing cylinder 7 is slightly tapered because of the necessity of die-cutting, and the thin end is inserted from the outside into the bottom of the cup body to process the housing cylinder. Therefore, the inner diameter of the outer end 7a of the housing cylinder 7 is about 10 μm larger than the inner diameter of the inner end 7b. The outer diameter of the bearing 6 fitted in the cylinder is the inner end 7b.
Since it is slightly smaller than the inner diameter R of the bearing 6, the outer end 7a is surrounded by the outer circumference 7a of the bearing 6 placed in the accommodating cylinder as exaggeratedly shown in FIG.
As a result, a conical air gap 10 is formed, which expands toward the center of the housing. This causes the bearing to rattle largely in the housing cylinder portion, causing the motor shaft 3 to run out of the core by about 30 μm, which causes a reduction in the function of the motor. Furthermore, since the thickness of the housing cylinder 7 is thinner than the bottom of the cup body, the strength is inferior and the bearing cannot be held strongly. Further, in order to manufacture the cup body 4, in addition to the press working, a disc 8 is required to be formed and a welding step of spot welding the disc 8 is also required, which is troublesome to manufacture.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明は、円板
８を打抜いてスポット溶接する溶接工程を必要とせず、
プレス工程だけで製造でき、それでいて軸受をガタ付き
少なく、しかも強力に保持できるようにしたのである。Therefore, the present invention does not require a welding step of punching the disk 8 and spot welding,
It can be manufactured only by the pressing process, yet the bearing can be held firmly and firmly.
【０００５】[0005]
【発明の実施の形態】この発明のモータケーシングの製
造方法は、平鋼板を金型Ａ、Ａ′で絞り加工して、底１
２が球面であるカップ体４とする第１工程、そのカップ
体４を金型Ｂ、Ｂ′で絞り加工して上記球面の底１２を
中央に有底円筒部１７が突出した平底にする第２工程、
次いで金型Ｃ、Ｃ′を使用して上記有底円筒部１７をカ
ップ体の平底中央にめり込ませることにより、上記円筒
部１７の筒壁を折返した二重壁にし、該円筒部１７の底
をカップ体の平底とほぼ同一面に揃える第３工程、及び
金型Ｄ、Ｄ′を使用して、上記円筒部１７の折返し二重
壁の内外壁１３、１４を密着させて軸受収容筒１１に成
形すると同時にモータケーシング用カップ体として仕上
げる第４工程から成ることを特徴とする。BEST MODE FOR CARRYING OUT THE INVENTION In the method for manufacturing a motor casing of the present invention, a flat steel plate is drawn by dies A and A'and the bottom 1
The first step is to make the cup body 4 having a spherical surface 2, and the cup body 4 is drawn by the dies B and B'to form a flat bottom with the bottomed cylindrical portion 17 protruding at the center. 2 steps,
Next, the bottomed cylindrical portion 17 is fitted into the center of the flat bottom of the cup body by using the molds C and C ', thereby making the cylindrical wall of the cylindrical portion 17 into a folded double wall. Using the third step of aligning the bottom of the cup with the flat bottom of the cup body and the molds D and D ', the inner and outer walls 13 and 14 of the folded double wall of the cylindrical portion 17 are brought into close contact with each other to accommodate the bearing. It is characterized in that it comprises a fourth step of molding into a cylinder 11 and at the same time finishing it as a motor casing cup body.
【０００６】図１，２は本発明により製作したモータケ
ーシングの一実施例で、前述の図４に示されているのと
同じ構成要素には同じ符号を付してある。図示の実施例
の軸受収容筒１１は、ケーシングのカップ体４の底１２
をカップ体内に二重に折返した内外の筒壁１３，１４で
形成され、カップ体の底１２とほゞ同一面の底１５を備
えている。収容筒１１の底１５を有する端部１１ａの内
径に対してカップ体の内部に開口した端部１１ｂの内径
は１０μｍ程度大きく、端部１１ｂから１１ａに向かっ
て僅かに先細のテーパが付けてあるが、このテーパは必
要なく、端部１１ａと１１ｂの内径は同じであってもよ
い。そして、モータ軸３を外に突出させるカップ体の収
容筒１１の底１５には、モータ軸を通す孔１６を開設す
る。1 and 2 show an embodiment of a motor casing manufactured according to the present invention, in which the same components as those shown in FIG. 4 are designated by the same reference numerals. The bearing housing cylinder 11 of the illustrated embodiment includes a bottom 12 of the cup body 4 of the casing.
Is formed by double-folded inner and outer cylindrical walls 13 and 14 in the cup body, and has a bottom 15 approximately flush with the bottom 12 of the cup body. The inner diameter of the end 11b opened inside the cup body is about 10 μm larger than the inner diameter of the end 11a having the bottom 15 of the housing cylinder 11, and is slightly tapered from the end 11b to the end 11a. However, this taper is not necessary, and the inner diameters of the ends 11a and 11b may be the same. Then, a hole 16 through which the motor shaft is inserted is formed in the bottom 15 of the housing cylinder 11 of the cup body that projects the motor shaft 3 to the outside.
【０００７】板厚、例えば１．４ｍｍの平鋼板を本発明
の製法によりプレス加工して成形するには、まず図３Ａ
に示すように底１２が球面のカップ体４を金型Ａ，Ａ´
でしぼり加工する（第１工程）。次に、カップ体をトリ
ミングし、図３Ｂに示すように、球面底１２を有底円筒
部１７を中央に有する平底状態に金型Ｂ，Ｂ´でしぼり
加工する（第２工程）。それから、図３Ｃに示すように
金型Ｃ，Ｃ´を使用し、有底円筒部１７をカップ体４の
内部にめり込ませて円筒部１７の底をカップ体の底１２
とほゞ同一面にする（第３工程）。この工程で収容筒１
１を形成する折返し状の二重筒壁１３，１４が生じる。
そして、最後に、図３Ｄに示すように金型Ｄ，Ｄ´を使
用し、筒壁１３，１４を密着させて収容筒を形成すると
同時にカップ体を仕上げる（第４工程）。第２工程で有
底の円筒部１７を形成するために該筒部１７内に突入す
る金型Ｂ´の中子ｂ、第３工程で同様に有底の円筒部１
７内に突入する金型Ｃ´の中子ｃ、第４工程で収容筒１
１内に突入する金型Ｄ´の中子ｄには僅かな抜き勾配が
付けてあるので、上記円筒部ないし収容筒は底１５に向
かって前述したように１０μｍ程度の僅かな先細りのテ
ーパになるが、金型Ｄ′の中子ｄには抜き勾配を付け
ず、軸受収容筒１１の内周はテーパが無い円筒形にして
もよい。To form a flat steel plate having a plate thickness of, for example, 1.4 mm by pressing according to the manufacturing method of the present invention, first, FIG.
As shown in FIG.
Squeeze processing (first step). Next, the cup body is trimmed, and as shown in FIG. 3B, the spherical bottom 12 is squeezed by the dies B and B'into a flat bottom state having the bottomed cylindrical portion 17 in the center (second step). Then, as shown in FIG. 3C, using the molds C and C ′, the bottomed cylindrical portion 17 is fitted into the inside of the cup body 4 so that the bottom of the cylindrical portion 17 becomes the bottom 12 of the cup body.
And almost the same surface (3rd step). In this process, the storage cylinder 1
The folded-back double cylindrical walls 13 and 14 forming 1 are formed.
Then, finally, as shown in FIG. 3D, the molds D and D'are used to close the cylindrical walls 13 and 14 to form the accommodating cylinder and at the same time finish the cup body (fourth step). The core b of the mold B'which projects into the cylindrical portion 17 to form the bottomed cylindrical portion 17 in the second step, and the bottomed cylindrical portion 1 similarly in the third step.
Core c of the mold C'which rushes into the inside of the container 7, and the containing cylinder 1 in the fourth step
Since the core d of the die D'which projects into the inside 1 is provided with a slight draft, the above-mentioned cylindrical portion or accommodating cylinder is tapered toward the bottom 15 with a slight taper of about 10 μm. However, the core d of the mold D ′ may be formed with no draft, and the inner circumference of the bearing housing cylinder 11 may be cylindrical without taper.
【０００８】[0008]
【発明の効果】本発明によりカップ体内の底１２に設け
られた軸受収容筒１１は、二重に折返して密着した内外
の筒壁１３、１４で形成されているため軸受を強力に保
持する。その上、従来の図４の円板８と、その溶接工程
が不要になり、プレス工程だけで製造でき、生産性が著
しく向上する。According to the present invention, since the bearing accommodating cylinder 11 provided on the bottom 12 in the cup body is formed by the inner and outer cylinder walls 13 and 14 which are folded back in double and closely adhered, the bearing is strongly retained. Moreover, the conventional disc 8 of FIG. 4 and the welding process thereof are not required, and the disc 8 can be manufactured only by the pressing process, and the productivity is remarkably improved.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明により製造したモータハウジングの一実
施例の断面図である。FIG. 1 is a sectional view of an embodiment of a motor housing manufactured according to the present invention.
【図２】図１を右側から見た正面図である。FIG. 2 is a front view of FIG. 1 as viewed from the right side.
【図３】図１のモータハウジングの成形工程図である。FIG. 3 is a process drawing of the motor housing of FIG.
【図４】従来のシリーズモータの一部を断面にした側面
図である。FIG. 4 is a side view showing a cross section of a part of a conventional series motor.
【図５】図４の収容筒部と、軸受とモータ軸の関係を示
す説明図である。5 is an explanatory diagram showing a relationship between the housing cylinder portion of FIG. 4, a bearing and a motor shaft.
【符号の説明】 ４ カップ体 １１ 収容筒 １２ カップ体の底 １３ 筒壁 １４ 筒壁 １５ 収容筒の底[Explanation of Codes] 4 Cup Body 11 Storage Cylinder 12 Bottom of Cup Body 13 Cylinder Wall 14 Cylinder Wall 15 Bottom of Storage Cylinder
Claims (1)
底１２が球面であるカップ体４とする第１工程、そのカ
ップ体４を金型Ｂ、Ｂ′で絞り加工して上記球面の底１
２を中央に有底円筒部１７が突出した平底にする第２工
程、次いで金型Ｃ、Ｃ′を使用して上記有底円筒部１７
をカップ体の平底中央にめり込ませることにより、上記
円筒部１７の筒壁を折返した二重壁にし、該円筒部１７
の底をカップ体の平底とほぼ同一面に揃える第３工程、
及び金型Ｄ、Ｄ′を使用して、上記円筒部１７の折返し
二重壁の内外壁１３、１４を密着させて軸受収容筒１１
に成形すると同時にモータケーシング用カップ体として
仕上げる第４工程から成ることを特徴とするモータケー
シングの製造方法。1. A flat steel plate is drawn by dies A and A ′,
First step of forming the cup body 4 whose bottom 12 is a spherical surface, the cup body 4 is drawn by the dies B and B ', and the bottom 1 of the spherical surface is formed.
The second step of making 2 a flat bottom with a bottomed cylindrical portion 17 protruding in the center, and then using the molds C, C ′, the above-mentioned bottomed cylindrical portion 17
Is inserted into the center of the flat bottom of the cup body to make the cylindrical wall of the cylindrical portion 17 into a folded double wall.
The third step of aligning the bottom of the cup with the flat bottom of the cup body,
Using the molds D and D ', the inner and outer walls 13 and 14 of the folded double wall of the cylindrical portion 17 are brought into close contact with each other and the bearing housing cylinder 11 is
A method of manufacturing a motor casing, which comprises the fourth step of simultaneously molding into a cup body for a motor casing and finishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20980596A JPH09107665A (en) | 1996-08-08 | 1996-08-08 | Manufacture of motor casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20980596A JPH09107665A (en) | 1996-08-08 | 1996-08-08 | Manufacture of motor casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09107665A true JPH09107665A (en) | 1997-04-22 |
Family
ID=16578900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20980596A Pending JPH09107665A (en) | 1996-08-08 | 1996-08-08 | Manufacture of motor casing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09107665A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462157C (en) * | 2006-11-17 | 2009-02-18 | 梁树明 | Full automatic compounding process and mould for household motor shell |
| US7847449B2 (en) | 2004-05-03 | 2010-12-07 | Robert Bosch Gmbh | Modular electric motor drive unit |
| JP2012251531A (en) * | 2011-06-07 | 2012-12-20 | Mitsubishi Electric Corp | Engine starting device |
| JP2022531354A (en) * | 2019-05-02 | 2022-07-06 | ブラウン ゲーエムベーハー | Motors with spring-loaded movable motor components and personal care devices with such motors |
-
1996
- 1996-08-08 JP JP20980596A patent/JPH09107665A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7847449B2 (en) | 2004-05-03 | 2010-12-07 | Robert Bosch Gmbh | Modular electric motor drive unit |
| CN100462157C (en) * | 2006-11-17 | 2009-02-18 | 梁树明 | Full automatic compounding process and mould for household motor shell |
| JP2012251531A (en) * | 2011-06-07 | 2012-12-20 | Mitsubishi Electric Corp | Engine starting device |
| JP2022531354A (en) * | 2019-05-02 | 2022-07-06 | ブラウン ゲーエムベーハー | Motors with spring-loaded movable motor components and personal care devices with such motors |
| US11859687B2 (en) | 2019-05-02 | 2024-01-02 | Braun Gmbh | Motor with spring-mounted movable motor part and personal care device comprising such a motor |
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