JPH11270563A - Angular ball bearing - Google Patents
Angular ball bearingInfo
- Publication number
- JPH11270563A JPH11270563A JP10076919A JP7691998A JPH11270563A JP H11270563 A JPH11270563 A JP H11270563A JP 10076919 A JP10076919 A JP 10076919A JP 7691998 A JP7691998 A JP 7691998A JP H11270563 A JPH11270563 A JP H11270563A
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- counter
- ball
- inner ring
- ball bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/42—Ball cages made from wire or sheet metal strips
- F16C33/422—Ball cages made from wire or sheet metal strips made from sheet metal
- F16C33/425—Ball cages made from wire or sheet metal strips made from sheet metal from a single part, e.g. ribbon cages with one corrugated annular part
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3806—Details of interaction of cage and race, e.g. retention, centring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
- F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
- F16C19/548—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings in O-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
- F16C43/06—Placing rolling bodies in cages or bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、各種の用途、例
えば内外輪を締まり嵌め状態として使用される減速装置
用のアンギュラ玉軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an angular ball bearing for a reduction gear used in various applications, for example, in a state where inner and outer rings are tightly fitted.
【０００２】[0002]
【従来の技術と発明が解決しようとする課題】一般に、
アンギュラ玉軸受は、内外輪が非分離となっている。使
用条件によって、例えば内外輪が締まり嵌めで使用され
る場合は、内輪，ボール，および保持器からなるアセン
ブリ品を軸に圧入し、外輪をハウジングに圧入する構成
が採られることがある。すなわち、外輪分離形とされ
る。このような外輪分離形のアンギュラ玉軸受とした場
合、保持器に保持されたボールの配列と軌道輪のカウン
タ部との締め代を確保しながら、軸受の組み立てが可能
なように、保持器を樹脂製とし、保持器にある程度の弾
性変形を許す構造が採られる。2. Description of the Related Art In general,
In the angular contact ball bearing, the inner and outer rings are not separated. Depending on the use conditions, for example, when the inner and outer rings are used in an interference fit, a configuration may be adopted in which an assembly including the inner ring, the ball, and the retainer is pressed into the shaft and the outer ring is pressed into the housing. That is, the outer ring is separated. When such an outer ring-separated type angular contact ball bearing is used, the retainer must be mounted so that the bearing can be assembled while securing the interference between the ball arrangement held by the retainer and the counter of the raceway ring. The cage is made of resin and has a structure that allows a certain degree of elastic deformation of the cage.
【０００３】しかし、軸受が大きくなると、樹脂で保持
器を製作する場合、設備や金型にかかる費用が多大なも
のとなる。そのため、通常の鉄板保持器とすることが望
まれるが、組立性や使用時の非分離性の確保が難しく、
鉄板保持器を用いた外輪分離形のアンギュラ玉軸受は、
実用化されるに至っていない。[0003] However, when the size of the bearing is increased, the cost of equipment and a mold becomes large when the cage is made of resin. For this reason, it is desirable to use a normal iron plate retainer, but it is difficult to ensure assemblability and non-separation during use.
Angular contact ball bearings with a separate outer ring using an iron plate cage
It has not been put to practical use.
【０００４】例えば、図４に示すようなアンギュラ玉軸
受において、保持器５４が鉄板等のように弾性変形の生
じ難い材質である場合、保持器５４にボール５３を入れ
たときの内接径Ａ（図示せず）よりも内輪５１のカウン
タ部５１ａの外径Ｃを大きくすることにより、組み立て
後に内輪５１が分離することが無くなるが、直径締め代
（Ｃ−Ａ）が大きいと、保持器５４が無理な変形を生
じ、また小さいと分離することになる。また、図５に示
すように、分解時に外輪５２を下にして内輪５１を持ち
上げる場合、内輪５１のカウンタ部５１ａの外径面でボ
ール５３が押されることによって、ボール５３が外輪５
２のカウンタ部５２ａに押し付けられる。この押し付け
力が働くために、外輪５２からボール５３を分離する作
業が難いことがある。For example, in the case of an angular ball bearing as shown in FIG. 4, when the retainer 54 is made of a material such as an iron plate which is unlikely to undergo elastic deformation, the inscribed diameter A when the ball 53 is put into the retainer 54 is considered. By making the outer diameter C of the counter portion 51a of the inner ring 51 larger than that of the inner ring 51 (not shown), the inner ring 51 does not separate after assembly, but if the diameter interference (CA) is large, the retainer 54 Will cause excessive deformation, and will be separated if it is small. As shown in FIG. 5, when the inner ring 51 is lifted with the outer ring 52 down during disassembly, the ball 53 is pushed by the outer diameter surface of the counter portion 51 a of the inner ring 51 so that the ball 53 is
2 is pressed against the second counter section 52a. Because of this pressing force, it may be difficult to separate the ball 53 from the outer ring 52.
【０００５】この発明の目的は、保持器に無理な変形を
生じさせることなく、内輪に対して保持器およびボール
を容易に組み立てることができ、かつ組み立て後に内輪
が分離することのない外輪分離形のアンギュラ玉軸受を
提供することである。この発明の他の目的は、分解時
に、内輪，保持器，およびボールの組立部品を外輪から
円滑に抜き出すことができるようにすることである。SUMMARY OF THE INVENTION An object of the present invention is to provide an outer ring separation type in which a retainer and a ball can be easily assembled to an inner ring without causing excessive deformation of the retainer, and the inner ring does not separate after assembly. To provide an angular contact ball bearing. Another object of the present invention is to enable the assembly of the inner ring, the retainer, and the ball to be smoothly removed from the outer ring during disassembly.
【０００６】[0006]
【課題を解決するための手段】この発明の請求項１記載
のアンギュラ玉軸受は、外輪分離形のアンギュラ玉軸受
において、内輪のカウンタ部の外径（Ｃ）を、保持器の
みで保持された状態のボールの配列の内接径（Ａ）より
も大きくし、これら内輪カウンタ外径（Ｃ）と内接径
（Ａ）との間の直径締め代（Ｃ−Ａ）を、ボール径
（ｄ）に対して、内輪をボール配列に押し込むときに保
持器が変形しなくかつ組み立て後に分離しない所定の割
合範囲としたものである。この構成によると、保持器に
ボールを入れたときの内接径（Ａ）よりも内輪のカウン
タ部の外径（Ｃ）を大きくしたため、組み立て後に内輪
が分離することが無くなる。この場合に、直径締め代
（Ｃ−Ａ）が大きいと、保持器が無理な変形を生じ、ま
た小さいと分離することになる。そこで、この発明は、
内輪カウンタ外径（Ｃ）と内接径（Ａ）との間の直径締
め代（Ｃ−Ａ）を、ボール径（ｄ）に対して、内輪をボ
ール配列に押し込むときに保持器が変形しなくかつ組み
立て後に分離しない所定の割合範囲としたものである。
この所定の割合範囲は、（直径締め代（Ｃ−Ａ））／
（ボール径ｄ）の値が、０．０３〜０．１０となる範囲
とすることが望ましい。According to a first aspect of the present invention, there is provided an angular contact ball bearing, wherein an outer diameter (C) of a counter portion of an inner ring is held only by a retainer in an angular contact ball bearing of a separate outer ring type. The inscribed diameter (A) of the ball arrangement in the state is made larger, and the diameter interference (CA) between the inner diameter of the inner ring counter (C) and the inscribed diameter (A) is determined by the ball diameter (d) ), The retainer is not deformed when the inner ring is pushed into the ball arrangement and is not separated after assembly. According to this configuration, since the outer diameter (C) of the counter portion of the inner ring is made larger than the inner diameter (A) when the ball is put in the retainer, the inner ring does not separate after assembly. In this case, if the diameter interference (C-A) is large, the cage will be deformed excessively, and if it is small, it will be separated. Therefore, the present invention
When the inner ring is pushed into the ball arrangement with respect to the ball diameter (d), the retainer is deformed so that the diameter interference (CA) between the inner ring counter outer diameter (C) and the inscribed diameter (A) is equal to the ball diameter (d). And a predetermined ratio range that does not separate after assembly.
This predetermined ratio range is (diameter interference (CA)) /
It is desirable that the value of (ball diameter d) be in the range of 0.03 to 0.10.
【０００７】この発明の請求項３記載のアンギュラ玉軸
受は、外輪分離形のアンギュラ玉軸受において、外輪の
カウンタ部に、軌道溝の溝底径よりも大きい内径となる
カウンタ広がり部を設けたものである。このように外輪
にカウンタ広がり部を設けることにより、分解時に、内
輪，保持器，およびボールの組立部品を外輪から円滑に
抜き出すことができる。すなわち、分解時にボールが内
輪のカウンタ部で押されて外輪のカウンタ部に押し付け
られても、カウンタ広がり部にボールが逃げ、分解が容
易となる。According to a third aspect of the present invention, there is provided an angular contact ball bearing of an outer ring separated type, wherein a counter portion of the outer ring is provided with a counter-spread portion having an inner diameter larger than the groove bottom diameter of the raceway groove. It is. By disposing the counter-spread portion on the outer ring as described above, the assembly of the inner ring, the retainer, and the ball can be smoothly extracted from the outer ring during disassembly. That is, even when the ball is pushed by the counter portion of the inner ring and pressed against the counter portion of the outer ring at the time of disassembly, the ball escapes to the widened portion of the counter and disassembly becomes easy.
【０００８】この発明において、外輪のカウンタ部は、
軌道溝の溝底から円筒面状に延びる平坦部と、この平坦
部よりも内径が大きなカウンタ広がり部とでなるものと
しても良い。前記平坦部は前記カウンタ広がり部よりも
軸方向に短くする。この平坦部は、寸法管理が容易であ
り、分離性の向上のために、できるだけ狭くすることが
好ましい。また、外輪のカウンタ広がり部の内径（Ｄ）
は、保持器のみで保持された状態のボールの配列の外接
径（Ｋ）よりも大きくすることが好ましい。これによ
り、一層、分離が容易となる。In the present invention, the counter portion of the outer ring
A flat portion extending in a cylindrical shape from the groove bottom of the raceway groove and a counter widened portion having an inner diameter larger than the flat portion may be used. The flat portion is made shorter in the axial direction than the counter spread portion. It is preferable that the flat portion is as narrow as possible for easy dimensional control and to improve the separability. Also, the inner diameter (D) of the counter-spread portion of the outer ring
Is preferably larger than the circumscribed diameter (K) of the ball arrangement held only by the retainer. This further facilitates the separation.
【０００９】この発明のアンギュラ玉軸受において、前
記各構成は相互に組み合わせたものとできる。例えば、
外輪分離形のアンギュラ玉軸受において、内輪のカウン
タ部の外径（Ｃ）を、保持器のみで保持された状態のボ
ールの配列の内接径（Ａ）よりも大きくし、これら内輪
カウンタ外径（Ｃ）と内接径（Ａ）との間の直径締め代
（Ｃ−Ａ）を、 （直径締め代（Ｃ−Ａ））／（ボール径ｄ） の値が、０．０３〜０．１０となる範囲とし、外輪のカ
ウンタ部に、軌道溝の溝底径よりも大きい内径となるカ
ウンタ広がり部を設けたものとしても良い。In the angular ball bearing of the present invention, the above-mentioned components can be combined with each other. For example,
In an angular contact ball bearing of a separated outer ring type, the outer diameter (C) of the counter part of the inner ring is made larger than the inscribed diameter (A) of the arrangement of balls held only by the cage, and the outer diameter of these inner ring counters The diameter interference (CA) between (C) and the inscribed diameter (A) is calculated as follows: The value of (diameter interference (CA)) / (ball diameter d) is 0.03 to 0.3 mm. The range may be 10 and the counter portion of the outer ring may be provided with a counter widening portion having an inner diameter larger than the groove bottom diameter of the raceway groove.
【００１０】[0010]
【発明の実施の形態】この発明の一実施形態を図１およ
び図２に基づいて説明する。このアンギュラ玉軸受は、
外輪分離形であって、内輪１と外輪２の間に、保持器４
に保持されたボール３を介在させたものである。保持器
４は、鉄板を成形したリング状の鉄板保持器であり、円
周方向に等配された複数個所の円形のポケット５内にボ
ール３を保持している。内輪１および外輪２は、いずれ
も、軌道溝の片側の肩部を無くした部分であるカウンタ
部１ａ，２ａを有している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. This angular contact ball bearing
An outer ring is separated type, and a retainer 4 is provided between an inner ring 1 and an outer ring 2.
With the ball 3 held therein. The retainer 4 is a ring-shaped iron plate retainer formed by molding an iron plate, and holds the ball 3 in a plurality of circular pockets 5 equally arranged in a circumferential direction. Each of the inner ring 1 and the outer ring 2 has counter portions 1a and 2a which are portions where one shoulder of the raceway groove is removed.
【００１１】内輪１のカウンタ部１ａは、軌道溝１１の
溝底径よりも若干大きな外径で、軌道溝１１から円筒面
状に延びる平坦部８と、この平坦部８よりも外径が小さ
なカウンタ広がり部９とでなる。カウンタ広がり部９
は、平坦部８から次第に外径が小さくなるテーパ部分
と、このテーパ部分から同じ外径で内輪１の幅面までま
で続く部分とで構成される。外輪２のカウンタ部２ａ
は、軌道溝１２の溝底から円筒面状に延びる平坦部６
と、この平坦部６よりも内径が大きなカウンタ広がり部
７とでなる。平坦部６は、カウンタ広がり部７よりも軸
方向に短く、できるだけ幅狭とされている。The counter portion 1a of the inner race 1 has an outer diameter slightly larger than the groove bottom diameter of the raceway groove 11, a cylindrical portion extending from the raceway groove 11 in a cylindrical shape, and an outer diameter smaller than the flat portion 8. It is composed of a counter spread portion 9. Counter spread part 9
Is composed of a tapered portion whose outer diameter gradually decreases from the flat portion 8 and a portion extending from this tapered portion to the width surface of the inner ring 1 with the same outer diameter. Counter 2a of outer ring 2
Is a flat portion 6 extending cylindrically from the groove bottom of the raceway groove 12.
And a counter spread portion 7 having an inner diameter larger than the flat portion 6. The flat portion 6 is shorter in the axial direction than the counter spread portion 7 and is as narrow as possible.
【００１２】各部の寸法関係を説明する。内輪１のカウ
ンタ部１ａの外径Ｃは、保持器４のみで保持された状態
のボール３の配列の内接径Ａよりも大きくする。すなわ
ち、Ｃ＞Ａである。これら内輪カウンタ外径Ｃと内接径
Ａとの間の直径締め代（Ｃ−Ａ）は、ボール径ｄに対し
て、（Ｃ−Ａ）／ｄの値が、０．０３〜０．１０となる
範囲とする。すなわち、０．０３≦（Ｃ−Ａ）／ｄ≦
０．１０である。内輪１のカウンタ広がり部１ａの外径
Ｂは、前記ボール３の配列の内接径Ａよりも小さくす
る。すなわち、Ｂ＜Ａとする。外輪２のカウンタ広がり
部７の内径Ｄは、保持器４のみで保持された状態のボー
ル３の配列の外接径Ｋよりも大きくする。すなわち、Ｋ
＜Ｄである。The dimensional relationship of each part will be described. The outer diameter C of the counter portion 1a of the inner ring 1 is made larger than the inscribed diameter A of the arrangement of the balls 3 held only by the retainer 4. That is, C> A. The diameter interference (C−A) between the outer diameter C of the inner ring counter and the inscribed diameter A is such that the value of (C−A) / d is 0.03 to 0.10 with respect to the ball diameter d. The range is as follows. That is, 0.03 ≦ (CA) / d ≦
0.10. The outer diameter B of the counter-spread portion 1a of the inner ring 1 is smaller than the inscribed diameter A of the arrangement of the balls 3. That is, B <A. The inner diameter D of the counter-spread portion 7 of the outer ring 2 is made larger than the circumscribed diameter K of the arrangement of the balls 3 held by only the retainer 4. That is, K
<D.
【００１３】この構成のアンギュラ玉軸受によると、保
持器４にボール３を入れたときの内接径Ａよりも内輪１
のカウンタ部１ａの外径Ｃを大きくしたため、組み立て
後に内輪１が分離することが無い。また、内輪カウンタ
外径Ｃと前記内接径Ａとの間の直径締め代（Ｃ−Ａ）
を、ボール径ｄに対して、（Ｃ−Ａ）／ｄの値が、０．
０３〜０．１０となる範囲に設定したため、内輪１をボ
ール３の配列に押し込むときに保持器４を変形させずに
容易に組み込むことができ、かつ組み立て後に分離しな
い。内輪１にカウンタ広がり部９を設け、その外径Ｂを
前記内接径Ａよりも小さくしたことからも、内輪１が組
み込み易くなる。また、外輪２のカウンタ部２ａに、軌
道溝１２の溝底径よりも大きい内径となるカウンタ広が
り部７を外輪幅面に開口して設けたため、内輪アセンブ
リを外輪２から抜くときに円滑に抜くことができる。例
えば、図２のように、分解時に外輪２を下にして内輪１
を持ち上げる場合に、ボール３が内輪１のカウンタ部１
ａで押されて外輪２のカウンタ部２ａに押し付けられて
も、カウンタ広がり部７にボールが逃げ、分解が容易と
なる。According to the angular ball bearing of this configuration, the inner ring 1 is larger than the inscribed diameter A when the ball 3 is put in the cage 4.
Since the outer diameter C of the counter portion 1a is increased, the inner ring 1 does not separate after assembly. Also, a diameter interference (CA) between the outer diameter C of the inner ring counter and the inscribed diameter A.
With respect to the ball diameter d, the value of (CA) / d is 0.1.
Since the inner ring 1 is set in the range of 03 to 0.10, the retainer 4 can be easily incorporated without deforming the inner ring 1 when the inner ring 1 is pushed into the arrangement of the balls 3, and does not separate after being assembled. Since the inner ring 1 is provided with the counter divergent portion 9 and the outer diameter B is smaller than the inscribed diameter A, the inner ring 1 can be easily assembled. Further, since the counter divergent portion 7 having an inner diameter larger than the groove bottom diameter of the raceway groove 12 is provided in the counter portion 2a of the outer ring 2 so as to be opened in the outer ring width surface, the inner ring assembly can be smoothly removed when the inner ring assembly is removed from the outer ring 2. Can be. For example, as shown in FIG.
When the ball 3 is lifted, the ball 3
The ball escapes to the counter spread portion 7 even if the ball is pushed by the a and pressed against the counter portion 2a of the outer race 2, thereby facilitating disassembly.
【００１４】つぎに、このアンギュラ玉軸受を用いた回
転部材支持構造の一例を図３と共に説明する。ハウジン
グ２１に、一対のアンギュラ玉軸受２０，２０を介し
て、回転部材２２が回転自在に支持されている。両アン
ギュラ玉軸受２０，２０は互いに背面を向けて設置され
る。ハウジング２１の回転部材貫通孔２３の内径面は、
両側の開口部が軸受嵌合面２３ａとなり、これら軸受嵌
合面２３ａの奥側に、内径側へ続く段面２３ｂが形成さ
れている。回転部材２２は、全体が軸部材であっても良
く、あるいは筒状やリング状の部材、例えば遊星歯車装
置における遊星ギヤ支持ヨーク等の減速機構成部品であ
っても良い。回転部材２２は、アンギュラ玉軸受２０の
内輪が嵌合する外径の軸部２２ａを有し、軸部２２ａの
一端に外径側へ延びる段面２２ｂが形成されている。軸
部２２ａの軸受設置個所よりも他端側には雄ねじ部２２
ｃが設けられ、軸受内輪１を締め付けるナット２４が螺
合される。Next, an example of a rotating member supporting structure using the angular ball bearing will be described with reference to FIG. A rotating member 22 is rotatably supported by the housing 21 via a pair of angular ball bearings 20. The two angular ball bearings 20, 20 are installed with their backs facing each other. The inner diameter surface of the rotating member through hole 23 of the housing 21 is
The openings on both sides serve as bearing fitting surfaces 23a, and a step surface 23b extending to the inner diameter side is formed on the back side of these bearing fitting surfaces 23a. The rotating member 22 may be a shaft member as a whole, or may be a cylindrical or ring-shaped member, for example, a reduction gear component such as a planetary gear support yoke in a planetary gear device. The rotating member 22 has an outer diameter shaft portion 22a into which the inner ring of the angular ball bearing 20 fits, and a step surface 22b extending to the outer diameter side is formed at one end of the shaft portion 22a. The male screw portion 22 is provided on the other end side of the shaft portion 22a from the bearing installation location.
c is provided, and a nut 24 for tightening the bearing inner ring 1 is screwed.
【００１５】組込みに際しては、ハウジング２１の両側
から各軸受嵌合面２３ａにアンギュラ玉軸受２０の外輪
２を圧入し、段面２３ｂに係合させる。回転部材２２に
は、まず奥側のアンギュラ玉軸受２０の内輪アセンブリ
１Ａを軸端から組み込み、最後に軸端側の内輪アセンブ
リ１Ｂを組み込んでナット２４で締め込み、所定の軸受
隙間を得る。内輪アセンブリ１Ａ，１Ｂは、保持器４に
保持されたボール３を内輪１に組み込んだ組立部品であ
る。奥側のアンギュラ玉軸受２０の内輪アセンブリ１Ａ
の内輪１は、軸部２２ａに、例えば圧入により取付け
る。分解に際しては、ナット２４を外し、回転部材２２
を矢印方向に抜く。このとき、奥側の内輪アセンブリ１
Ａは回転部材２２と一緒に抜けるが、この発明のアンギ
ュラ玉軸受２０を採用することにより、スムースに抜け
る。When assembling, the outer ring 2 of the angular ball bearing 20 is press-fitted into each bearing fitting surface 23a from both sides of the housing 21 and engaged with the step surface 23b. First, the inner ring assembly 1A of the angular ball bearing 20 on the back side is assembled into the rotating member 22 from the shaft end, and finally the inner ring assembly 1B on the shaft end side is assembled and tightened with the nut 24 to obtain a predetermined bearing clearance. The inner ring assemblies 1A and 1B are assembly parts in which the ball 3 held by the retainer 4 is incorporated into the inner ring 1. Inner ring assembly 1A of rear angular contact ball bearing 20
The inner ring 1 is mounted on the shaft portion 22a by, for example, press fitting. When disassembling, the nut 24 is removed and the rotating member 22 is removed.
In the direction of the arrow. At this time, the inner ring assembly 1 on the back side
A escapes together with the rotating member 22, but escapes smoothly by employing the angular ball bearing 20 of the present invention.
【００１６】このように、このアンギュラ玉軸受２０
は、ハウジング２１と回転部材２２との両方に締まり嵌
めされる部位に使用できる。また、この構成の回転部材
支持構造では、その分解時にアンギュラ玉軸受２０を内
輪１，保持器４，およびボール３の組み立て部品である
内輪アセンブリ１Ａと外輪２とに分割可能とすることが
必要であるが、このような使用形態において、このアン
ギュラ玉軸受２０の前記の各効果が有効に発揮される。As described above, the angular contact ball bearing 20
Can be used for a portion that is tightly fitted to both the housing 21 and the rotating member 22. Further, in the rotating member supporting structure of this configuration, it is necessary that the angular ball bearing 20 can be divided into an inner ring assembly 1A, which is an assembly part of the inner ring 1, the retainer 4, and the ball 3, and the outer ring 2 when disassembled. However, in such a usage form, the above-described respective effects of the angular ball bearing 20 are effectively exhibited.
【００１７】[0017]
【発明の効果】この発明の請求項１記載のアンギュラ玉
軸受は、内輪のカウンタ部の外径を、保持器のみで保持
された状態のボールの配列の内接径よりも大きくし、こ
れら内輪カウンタ外径と内接径との間の直径締め代を、
ボール径に対して、内輪をボール配列に押し込むときに
保持器が変形しなくかつ組み立て後に分離しない所定の
割合範囲としたものであるため、外輪分離形でありなが
ら、保持器に無理な変形を生じさせることなく、内輪に
対して保持器およびボールを容易に組み立てることがで
き、かつ組み立て後に内輪が分離することがない。前記
所定の割合範囲を、（直径締め代（Ｃ−Ａ））／（ボー
ル径ｄ）の値が、０．０３〜０．１０となる範囲とした
場合は、この組み立て性の向上、および内輪分離の防止
の各効果が良好に得られる。この発明の請求項３記載の
アンギュラ玉軸受は、外輪分離形のアンギュラ玉軸受に
おいて、外輪のカウンタ部に、軌道溝の溝底径よりも大
きい内径となるカウンタ広がり部を設けたものであるた
め、分解時に、内輪，保持器，およびボールの組立部品
を外輪から円滑に抜き出すことができる。外輪のカウン
タ部が、軌道溝の溝底から円筒面状に延びる平坦部と、
この平坦部よりも内径が大きなカウンタ広がり部とでな
り、前記平坦部を前記カウンタ広がり部よりも軸方向に
短くした場合は、より一層円滑に抜き出すことができ
る。また、外輪のカウンタ広がり部の内径を、保持器の
みで保持された状態のボールの配列の外接径よりも小さ
くした場合も、より一層円滑に抜き出すことができる。
この発明の請求項５記載のアンギュラ玉軸受は、保持器
に無理な変形を生じさせることなく、内輪に対して保持
器およびボールを容易に組み立てることができ、かつ組
み立て後に内輪が分離することがなく、しかも分解時に
は、内輪，保持器，およびボールの組立部品を外輪から
円滑に抜き出すことができる。According to the angular ball bearing of the first aspect of the present invention, the outer diameter of the counter portion of the inner ring is made larger than the inscribed diameter of the ball array held only by the retainer. The diameter interference between the counter outer diameter and the inscribed diameter,
The retainer does not deform when the inner ring is pushed into the ball array and does not separate after assembling when the inner ring is pushed into the ball array. Without this, the retainer and the ball can be easily assembled to the inner race, and the inner race does not separate after assembly. When the predetermined ratio range is set so that the value of (diameter interference (CA)) / (ball diameter d) is 0.03 to 0.10. Each effect of preventing separation can be obtained favorably. The angular contact ball bearing according to claim 3 of the present invention is the angular contact ball bearing of the outer ring separation type, wherein the counter portion of the outer ring is provided with a counter widening portion having an inner diameter larger than the groove bottom diameter of the raceway groove. At the time of disassembly, the inner ring, the retainer, and the ball assembly can be smoothly extracted from the outer ring. A counter portion of the outer ring, a flat portion extending in a cylindrical shape from the groove bottom of the raceway groove,
If the flat portion is a counter-spread portion having an inner diameter larger than that of the flat portion, and the flat portion is shorter in the axial direction than the counter-spread portion, it can be more smoothly extracted. Also, when the inner diameter of the counter-spread portion of the outer ring is smaller than the circumscribed diameter of the ball arrangement held only by the retainer, the ball can be more smoothly extracted.
In the angular ball bearing according to the fifth aspect of the present invention, the retainer and the ball can be easily assembled to the inner ring without causing excessive deformation of the retainer, and the inner ring can be separated after the assembly. Also, at the time of disassembly, the inner ring, the retainer, and the ball assembly can be smoothly extracted from the outer ring.
【図１】（Ａ）はこの発明の一実施形態にかかるアンギ
ュラ玉軸受の部分断面図、（Ｂ）はその保持器とボール
の関係を示す部分断面図である。FIG. 1A is a partial sectional view of an angular contact ball bearing according to an embodiment of the present invention, and FIG. 1B is a partial sectional view showing a relationship between a retainer and a ball thereof.
【図２】同アンギュラ玉軸受の分解動作の説明図であ
る。FIG. 2 is an explanatory view of a disassembling operation of the angular ball bearing.
【図３】同アンギュラ玉軸受を応用した回転部材支持構
造の断面図である。FIG. 3 is a cross-sectional view of a rotating member supporting structure to which the angular ball bearing is applied.
【図４】従来例の部分断面図である。FIG. 4 is a partial sectional view of a conventional example.
【図５】従来例の分解動作の説明図である。FIG. 5 is an explanatory diagram of a disassembly operation of a conventional example.
１…内輪 ３…ボール １ａ…カウンタ部 ４…保持器 ２…外輪 ６…平坦部 ２ａ…カウンタ部 ７…カウンタ広が
り部DESCRIPTION OF SYMBOLS 1 ... Inner ring 3 ... Ball 1a ... Counter part 4 ... Cage 2 ... Outer ring 6 ... Flat part 2a ... Counter part 7 ... Counter spreading part
Claims (6)
て、内輪のカウンタ部の外径（Ｃ）を、保持器のみで保
持された状態のボールの配列の内接径（Ａ）よりも大き
くし、これら内輪カウンタ外径（Ｃ）と内接径（Ａ）と
の間の直径締め代（Ｃ−Ａ）を、ボール径（ｄ）に対し
て、内輪をボール配列に押し込むときに保持器が変形せ
ずかつ組み立て後に分離しない所定の割合範囲としたア
ンギュラ玉軸受。In an angular contact ball bearing of a separated outer ring type, an outer diameter (C) of a counter portion of an inner ring is made larger than an inscribed diameter (A) of an array of balls held only by a retainer, When the inner ring is pushed into the ball arrangement with respect to the ball diameter (d), the retainer deforms the diameter interference (CA) between the outer diameter (C) of the inner ring counter and the inscribed diameter (A). Angular contact ball bearings with a specified ratio that does not separate after assembly.
記載のアンギュラ玉軸受。2. The predetermined ratio range is a range in which the value of (diameter interference (CA)) / (ball diameter d) is 0.03 to 0.10.
Angular contact ball bearing described.
て、外輪のカウンタ部に、軌道溝の溝底径よりも大きい
内径となるカウンタ広がり部を設けたアンギュラ玉軸
受。3. An angular contact ball bearing of a separate outer ring type, wherein a counter portion of the outer ring is provided with a counter-spread portion having an inner diameter larger than the groove bottom diameter of the raceway groove.
円筒面状に延びる平坦部と、この平坦部よりも内径が大
きなカウンタ広がり部とでなり、前記平坦部は前記カウ
ンタ広がり部よりも軸方向に短くした請求項３記載のア
ンギュラ玉軸受。4. The counter portion of the outer race comprises a flat portion extending in a cylindrical shape from the groove bottom of the raceway groove, and a counter spread portion having an inner diameter larger than the flat portion, wherein the flat portion is larger than the counter spread portion. 4. An angular contact ball bearing according to claim 3, wherein the length is also shortened in the axial direction.
て、内輪のカウンタ部の外径（Ｃ）を、保持器のみで保
持された状態のボールの配列の内接径（Ａ）よりも大き
くし、これら内輪カウンタ外径（Ｃ）と内接径（Ａ）と
の間の直径締め代（Ｃ−Ａ）を、 （直径締め代（Ｃ−Ａ））／（ボール径ｄ） の値が、０．０３〜０．１０となる範囲とし、外輪のカ
ウンタ部に、軌道溝の溝底径よりも大きい内径となるカ
ウンタ広がり部を設けたアンギュラ玉軸受。5. An outer ring-separated angular ball bearing, wherein an outer diameter (C) of a counter portion of an inner ring is larger than an inscribed diameter (A) of an array of balls held only by a retainer, The diameter interference (C−A) between the outer diameter (C) of the inner ring counter and the inscribed diameter (A) is expressed as: (Diameter interference (C−A)) / (ball diameter d) is 0. An angular ball bearing having a range of 0.03 to 0.10 and a counter portion of the outer ring provided with a counter divergent portion having an inner diameter larger than the groove bottom diameter of the raceway groove.
を、保持器のみで保持された状態のボールの配列の外接
径（Ｋ）よりも小さくした請求項３ないし請求項５のい
ずれかに記載のアンギュラ玉軸受。6. The inner diameter (D) of the counter-spread portion of the outer ring.
The angular ball bearing according to any one of claims 3 to 5, wherein the diameter of the ball is smaller than the circumscribed diameter (K) of the arrangement of the balls held only by the retainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07691998A JP3907820B2 (en) | 1998-03-25 | 1998-03-25 | Angular contact ball bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07691998A JP3907820B2 (en) | 1998-03-25 | 1998-03-25 | Angular contact ball bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11270563A true JPH11270563A (en) | 1999-10-05 |
| JP3907820B2 JP3907820B2 (en) | 2007-04-18 |
Family
ID=13619118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07691998A Expired - Lifetime JP3907820B2 (en) | 1998-03-25 | 1998-03-25 | Angular contact ball bearings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3907820B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278324A (en) * | 2006-04-03 | 2007-10-25 | Jtekt Corp | Pinion shaft supporting double row rolling bearing and rolling bearing device equipped therewith |
| JP2009192049A (en) * | 2008-02-18 | 2009-08-27 | Yaskawa Electric Corp | Nonseparable angular contact ball bearing |
-
1998
- 1998-03-25 JP JP07691998A patent/JP3907820B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278324A (en) * | 2006-04-03 | 2007-10-25 | Jtekt Corp | Pinion shaft supporting double row rolling bearing and rolling bearing device equipped therewith |
| JP2009192049A (en) * | 2008-02-18 | 2009-08-27 | Yaskawa Electric Corp | Nonseparable angular contact ball bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3907820B2 (en) | 2007-04-18 |
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