JP2006307894A - Angular contact ball bearing - Google Patents

Angular contact ball bearing Download PDF

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Publication number
JP2006307894A
JP2006307894A JP2005128166A JP2005128166A JP2006307894A JP 2006307894 A JP2006307894 A JP 2006307894A JP 2005128166 A JP2005128166 A JP 2005128166A JP 2005128166 A JP2005128166 A JP 2005128166A JP 2006307894 A JP2006307894 A JP 2006307894A
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Japan
Prior art keywords
ball
groove
counter
raceway
bearing
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Pending
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JP2005128166A
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Japanese (ja)
Inventor
Toshiyuki Kataoka
俊之 片岡
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2005128166A priority Critical patent/JP2006307894A/en
Publication of JP2006307894A publication Critical patent/JP2006307894A/en
Pending legal-status Critical Current

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    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an angular contact ball bearing capable of easily managing bearing assembling processes without a risk for generation of scratches on balls when assembling balls into a raceway groove of a raceway ring having a counter section. <P>SOLUTION: Upon preparing a chamfer section 2c on a groove shoulder located at an opposite side of the counter section 2b of the raceway groove 2a of an outer ring 2 having the counter section 2b for ball assembling, generation of scratches on the balls 3 caused by variations of pushing-in fits established on a groove shoulder at a counter section 2b side can be prevented even though the balls 3 assembled into the raceway groove 2a are strongly struck on the groove shoulder at an opposite side. Management for the bearing assembling processes can be easily carried out by dispensing with the management for variations of pushing-in fits and pushing-in force at the time of ball assembling. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、アンギュラ玉軸受に関する。   The present invention relates to an angular contact ball bearing.

アンギュラ玉軸受は、内外輪の少なくとも一方の軌道輪の軌道溝の片側に、ボール組み込み用のカウンタ部が設けられている。アンギュラ玉軸受を組み立てる際は、環状の保持器に組み込んだボールを、このカウンタ部が設けられた軌道輪の軌道溝と対向する他方の軌道輪の軌道溝にセットしたのち、カウンタ部が設けられた軌道輪を、その軌道溝にカウンタ部側からボールが組み込まれるように軸方向から嵌め込み、ボールがセットされた他方の軌道輪と組み立てるようにしている（例えば、特許文献１参照）。   In the angular ball bearing, a counter part for ball incorporation is provided on one side of the raceway groove of at least one of the inner and outer races. When assembling angular contact ball bearings, the ball incorporated in the annular cage is set in the raceway groove of the other race ring facing the raceway groove of the raceway ring provided with this counter unit, and then the counter unit is provided. The raceway is fitted in the raceway groove in the axial direction so that the ball is incorporated from the counter portion side, and is assembled with the other raceway on which the ball is set (see, for example, Patent Document 1).

このアンギュラ玉軸受には、カウンタ部が設けられた軌道輪の軌道溝のカウンタ部側とその反対側との両側に溝肩を設け、軌道溝間に組み込まれるボールと内外輪とを非分離としたものが多い。後からボールが組み込まれる軌道溝のカウンタ部側の溝肩は、ボールを非分離とするためのかち込み代を設定して低く鈍角に形成され、その反対側の溝肩は高く鋭角に形成される。   In this angular contact ball bearing, groove shoulders are provided on both sides of the counter groove side of the raceway groove and the opposite side of the raceway ring provided with the counter part so that the ball incorporated between the raceway grooves and the inner and outer rings are not separated. There are many things. The groove shoulder on the counter part side of the raceway groove into which the ball is to be incorporated later is formed with a low obtuse angle with a setting margin for non-separating the ball, and the groove shoulder on the opposite side is formed with a high acute angle The

また、この非分離型のアンギュラ玉軸受では、外輪側の軌道溝にボール組み込み用のカウンタ部を設けることが多く、保持器に組み込んだボールを内輪側の軌道溝にセットしたのち、外輪を熱膨張させて、かち込み代を設定したカウンタ部側の溝肩から、その軌道溝へボールを組み込むようにしている。外輪の温度が常温まで低下すると、その熱収縮によって外輪とボールおよび内輪とが非分離となる。   Also, in this non-separable angular contact ball bearing, a counter part for incorporating a ball is often provided in the raceway groove on the outer ring side. After the ball incorporated in the cage is set in the raceway groove on the inner ring side, the outer ring is heated. The ball is incorporated into the raceway groove from the groove shoulder on the counter portion side where the allowance is set by expanding. When the temperature of the outer ring decreases to room temperature, the outer ring, the ball, and the inner ring become non-separated by the thermal contraction.

特開平１１−２７０５６３号公報Japanese Patent Laid-Open No. 11-270563

上述した非分離型のアンギュラ玉軸受では、ボール組み込み用のカウンタ部を設けた軌道輪を、保持器に組み込んだボールがセットされた他方の軌道輪と組み立てる際に、その軌道溝のカウンタ部側の溝肩に設定されたかち込み代のばらつきによって、軌道溝に組み込まれるボールが鋭角に形成された反対側の溝肩に強く当たり、ボールに疵が発生することがある。   In the non-separable angular contact ball bearing described above, when assembling a bearing ring provided with a counter part for ball incorporation with the other bearing ring on which a ball incorporated in a cage is set, the raceway side of the raceway groove is on the counter part side. Depending on the variation of the allowance set in the groove shoulder, the ball incorporated in the raceway groove may hit the opposite groove shoulder formed at an acute angle and the wrinkle may be generated on the ball.

このようなボール疵は、軸受使用中の騒音の原因となるとともに、軸受寿命を短くする原因ともなるので、従来は、カウンタ部側の溝肩に設定されるかち込み代のばらつきを厳密に管理したり、ボール組み込み時のかち込み力が過大にならないように管理したりしている。また、かち込み代は軸受サイズによっても異なるので、軸受組立工程の管理に非常に手間がかかる問題がある。   Such ball cages cause noise during use of the bearing and shorten the life of the bearing. Conventionally, the variation in the amount of squeeze set on the groove shoulder on the counter side has been strictly controlled. And managing so that the pushing force when the ball is assembled is not excessive. In addition, since the amount of carry-in varies depending on the bearing size, there is a problem that it takes much time to manage the bearing assembly process.

そこで、本発明の課題は、カウンタ部を設けた軌道輪の軌道溝へのボールの組み込み時にボール疵が発生する恐れがなく、軸受組立工程の管理を容易にできるアンギュラ玉軸受を提供することである。   Accordingly, an object of the present invention is to provide an angular contact ball bearing that can easily manage the bearing assembly process without the risk of generating a ball cage when the ball is assembled into the raceway groove of the raceway ring provided with the counter portion. is there.

上記の課題を解決するために、本発明は、内外輪の少なくとも一方の軌道輪の軌道溝の片側にボール組み込み用のカウンタ部が設けられ、このカウンタ部を設けられた軌道輪の軌道溝が、カウンタ部側とその反対側との両側に溝肩を有するアンギュラ玉軸受において、前記カウンタ部を設けられた少なくとも一方の軌道輪の軌道溝の前記カウンタ部と反対側の溝肩に面取り部を設けた構成を採用した。   In order to solve the above problems, the present invention provides a counter part for incorporating a ball on one side of the raceway groove of at least one of the inner and outer races, and the raceway groove of the raceway ring provided with this counter part comprises In the angular ball bearing having groove shoulders on both sides of the counter portion side and the opposite side thereof, a chamfered portion is provided on the groove shoulder on the opposite side of the counter portion of the raceway groove of at least one bearing ring provided with the counter portion. The provided configuration was adopted.

すなわち、ボール組み込み用のカウンタ部を設けられた少なくとも一方の軌道輪の軌道溝のカウンタ部と反対側の溝肩に面取り部を設けることにより、カウンタ部側の溝肩に設定されたかち込み代のばらつきによって、軌道溝に組み込まれるボールが反対側の溝肩に強く当たってもボールに疵が発生しないようにし、かち込み代のばらつきの管理や、ボール組み込み時のかち込み力の管理を不要として、軸受組立工程の管理を容易にできるようにした。   That is, by providing a chamfered portion on the groove shoulder on the opposite side of the counter groove portion of the raceway groove of at least one raceway ring provided with a counter portion for incorporating the ball, it is possible to set the pinch allowance set on the groove shoulder on the counter portion side. Because of the variation in the ball, even if the ball incorporated in the raceway groove hits the opposite groove shoulder strongly, the ball will not be wrinkled, and there is no need to manage the variation in the allowance and the force to administer the ball when incorporating the ball. As a result, the bearing assembly process can be easily managed.

前記カウンタ部を設けられた少なくとも一方の軌道輪は外輪とすることができる。   At least one of the bearing rings provided with the counter unit may be an outer ring.

本発明のアンギュラ玉軸受は、ボール組み込み用のカウンタ部を設けられた少なくとも一方の軌道輪の軌道溝のカウンタ部と反対側の溝肩に面取り部を設けることにより、カウンタ部側の溝肩に設定されたかち込み代のばらつきによって、軌道溝に組み込まれるボールが反対側の溝肩に強く当たってもボールに疵が発生しないようにしたので、かち込み代のばらつきの管理や、ボール組み込み時のかち込み力の管理を不要として、軸受組立工程の管理を容易にすることができる。   The angular contact ball bearing of the present invention is provided on the groove shoulder on the counter portion side by providing a chamfered portion on the groove shoulder on the opposite side to the counter portion of the raceway groove of at least one bearing ring provided with the counter portion for ball incorporation. Because of the variation in the set-up allowance, even if the ball built into the raceway groove hits against the groove shoulder on the opposite side, the ball is prevented from wrinkling. The management of the bearing assembly process can be facilitated by eliminating the need to manage the force of pushing in.

以下、図面に基づき、本発明の実施形態を説明する。このアンギュラ玉軸受は、図１に示すように、内輪１の軌道溝１ａと外輪２の軌道溝２ａの間に複数のボール３が環状の保持器４で保持され、外輪２の軌道溝２ａの片側にボール組み込み用のカウンタ部２ｂが設けられている。また、内輪１にも外輪２のカウンタ部２ｂと反対側で軌道溝１ａの片側にカウンタ部１ｂが設けられている。このアンギュラ玉軸受は、非分離型のものであり、各軌道溝１ａ、２ａは、それぞれカウンタ部１ｂ、２ｂ側とその反対側とに溝肩を有する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this angular ball bearing, as shown in FIG. 1, a plurality of balls 3 are held between a raceway groove 1 a of an inner ring 1 and a raceway groove 2 a of an outer ring 2 by an annular cage 4. A counter portion 2b for ball incorporation is provided on one side. The inner ring 1 is also provided with a counter portion 1b on one side of the raceway groove 1a on the side opposite to the counter portion 2b of the outer ring 2. This angular ball bearing is a non-separable type, and each raceway groove 1a, 2a has a groove shoulder on the counter part 1b, 2b side and the opposite side, respectively.

図２（ａ）に示すように、前記外輪２の軌道溝２ａのカウンタ部２ｂ側の溝肩には、後述する軸受組立時に、保持器４に組み込まれたボール３をカウンタ部２ｂ側から軌道溝２ａにかち込んで非分離とするためのかち込み代δが設定され、その反対側の溝肩には、Ｒ状の面取り部２ｃが設けられている。なお、図２（ｂ）は、この面取り部２ｃをテーパ状とした変形例を示す。   As shown in FIG. 2 (a), the ball 3 incorporated in the cage 4 is tracked from the counter portion 2b side at the time of assembly of the bearing described later on the shoulder of the raceway groove 2a of the outer ring 2 on the counter portion 2b side. An insertion allowance δ for setting in the groove 2a so as not to be separated is set, and an R-shaped chamfered portion 2c is provided on the groove shoulder on the opposite side. FIG. 2B shows a modification in which the chamfered portion 2c is tapered.

図３は、上述したアンギュラ玉軸受を組み立てる状態を示す。保持器４に組み込まれたボール３は、先に内輪１の軌道溝１ａにセットされ、こののち、熱膨張させた外輪２が、その軌道溝２ａにカウンタ部２ｂ側からボール３が組み込まれるように軸方向からかち込まれる。上述したように、このかち込み側と反対側の軌道溝２ａの溝肩には面取り部２ｃが設けられているので、この溝肩にかち込み時のボール３が強く当たっても、ボール疵が生じることはない。ボール３が軌道溝２ａにかち込まれたのち、外輪２の温度が常温まで低下すると、その熱収縮によって外輪２とボール３および内輪１とが非分離となる。   FIG. 3 shows a state in which the above-described angular ball bearing is assembled. The ball 3 incorporated in the cage 4 is set in the raceway groove 1a of the inner ring 1 first, and then the thermally expanded outer ring 2 is incorporated in the raceway groove 2a from the counter portion 2b side. From the axial direction. As described above, since the chamfered portion 2c is provided on the groove shoulder of the raceway groove 2a on the side opposite to the side where the ball is inserted, even if the ball 3 hits the groove shoulder, It does not occur. After the ball 3 is pushed into the raceway groove 2a, when the temperature of the outer ring 2 is lowered to room temperature, the outer ring 2, the ball 3 and the inner ring 1 are not separated by the thermal contraction.

上述した実施形態では、内外輪の両方の軌道輪にカウンタ部を設け、外輪のカウンタ部をボールがかち込まれるボール組み込み用のものとしたが、内輪のカウンタ部をボール組み込み用のものとすることもできる。また、このカウンタ部を設ける軌道輪に対向する他方の軌道輪は、深溝玉軸受の軌道輪のように、カウンタ部のないものとしてもよい。   In the embodiment described above, the counter part is provided on both the inner and outer races, and the counter part of the outer ring is for ball incorporation into which the ball is bited. However, the counter part of the inner ring is for ball incorporation. You can also. Further, the other bearing ring facing the bearing ring provided with the counter portion may have no counter portion like the bearing ring of the deep groove ball bearing.

また、上述した実施形態では、アンギュラ玉軸受を単列のものとしたが、本発明は、両方の軌道輪を軸方向に組合わせた組合せアンギュラ玉軸受や、一方の軌道輪を軸方向に組合わせた複列アンギュラ玉軸受にも適用することができる。   In the above-described embodiment, the angular ball bearings are single-row. However, the present invention is a combination angular ball bearing in which both bearing rings are combined in the axial direction, or one of the bearing rings is combined in the axial direction. It can also be applied to combined double-row angular contact ball bearings.

アンギュラ玉軸受の実施形態を示す縦断面図Longitudinal sectional view showing an embodiment of the angular ball bearing ａは図１の外輪を拡大して示す断面図、ｂはａの変形例を示す断面図a is an enlarged cross-sectional view of the outer ring of FIG. 1, b is a cross-sectional view showing a modification of a 図１のアンギュラ玉軸受を組み立てる状態を示す一部省略縦断面図FIG. 1 is a partially omitted longitudinal sectional view showing a state where the angular ball bearing of FIG. 1 is assembled.

符号の説明Explanation of symbols

１ 内輪
２ 外輪
１ａ、２ａ 軌道溝
１ｂ、２ｂ カウンタ部
２ｃ 面取り部
３ ボール
４ 保持器 DESCRIPTION OF SYMBOLS 1 Inner ring 2 Outer ring 1a, 2a Track groove 1b, 2b Counter part 2c Chamfer part 3 Ball 4 Cage

Claims (2)

内外輪の少なくとも一方の軌道輪の軌道溝の片側にボール組み込み用のカウンタ部が設けられ、このカウンタ部を設けられた軌道輪の軌道溝が、カウンタ部側とその反対側との両側に溝肩を有するアンギュラ玉軸受において、前記カウンタ部を設けられた少なくとも一方の軌道輪の軌道溝の前記カウンタ部と反対側の溝肩に面取り部を設けたことを特徴とするアンギュラ玉軸受。   A counter part for ball incorporation is provided on one side of the raceway groove of at least one of the inner and outer rings, and the raceway groove of the raceway ring provided with this counter part has grooves on both sides of the counter part side and the opposite side. An angular contact ball bearing having a shoulder, wherein a chamfered portion is provided on a groove shoulder opposite to the counter portion of a raceway groove of at least one raceway ring provided with the counter portion. 前記カウンタ部を設けられた少なくとも一方の軌道輪が外輪である請求項１に記載のアンギュラ玉軸受。   The angular ball bearing according to claim 1, wherein at least one of the bearing rings provided with the counter portion is an outer ring.
JP2005128166A 2005-04-26 2005-04-26 Angular contact ball bearing Pending JP2006307894A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009192049A (en) * 2008-02-18 2009-08-27 Yaskawa Electric Corp Nonseparable angular contact ball bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009192049A (en) * 2008-02-18 2009-08-27 Yaskawa Electric Corp Nonseparable angular contact ball bearing

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