JP2004019823A - Rolling bearing device - Google Patents

Rolling bearing device Download PDF

Info

Publication number
JP2004019823A
JP2004019823A JP2002177259A JP2002177259A JP2004019823A JP 2004019823 A JP2004019823 A JP 2004019823A JP 2002177259 A JP2002177259 A JP 2002177259A JP 2002177259 A JP2002177259 A JP 2002177259A JP 2004019823 A JP2004019823 A JP 2004019823A
Authority
JP
Japan
Prior art keywords
gear
rolling bearing
bearing device
raceway surface
grinding
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
Application number
JP2002177259A
Other languages
Japanese (ja)
Inventor
Yoshitaka Hayashi
林　善貴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP2002177259A priority Critical patent/JP2004019823A/en
Publication of JP2004019823A publication Critical patent/JP2004019823A/en
Pending legal-status Critical Current

Links

Images

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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling bearing device, maintaining the machining accuracy of a raceway surface formed on the gear side similarly to the machining accuracy level for the raceway surface formed on the bearing side. <P>SOLUTION: In this rolling bearing device 1, at least one track plane is formed where a conical roller 5 is brought into rotation contact on the gear 2 side. The track plane is formed by integrating one of an outer ring and an inner ring of the bearing 3. The grinding is performed taking the ground outer peripheral surface 7 of a cylindrical part 8 formed on the end face of the gear 2 as the grinding reference surface by a grinding wheel 12. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車用減速装置に用いられる転がり軸受装置に関し、特に歯車側に形成される軌道面を軸受側に形成される軌道面と同様の加工精度水準に維持するための改良に関する。
【０００２】
【従来の技術】
従来、自動車用減速装置に用いられる転がり軸受装置として、例えば歯車の内周側には、複列の円錐ころ軸受を配置したものがある。この場合、歯車及び軸受の外輪は、通常圧入によりスペーサ等によって位置を決定し取り付けられるが、取り付けスペースの削減を意図して、軸受の外輪を歯車と一体化することがある。
そして、軸受の外輪を一体化した転がり軸受装置は、歯車側に形成される軌道面を加工するにあたり、図４に示したような研削加工手段を採用している。すなわち、歯車３１は、歯切り加工を行った外周部分を加工基準面（▽印で表示）にし、次いで回転中心線３２に対する内径側の軌道面３３が、研削砥石３４の回転により研削されるようになっている。
【０００３】
【発明が解決しようとする課題】
上述した加工手段によれば、加工基準面として、歯切り加工による外周面を利用しているため、現実の加工では、回転中心線３２及び軌道面３３は、本来の位置とはずれた位置に形成されることになる。
この結果、上述の転がり軸受装置では、歯車３１の内径側に形成される軌道面３３に軸受を組み込み回転したときには、歯車３１側では同軸度や振れ等にずれが生じるため、ギヤノイズ、ギヤ噛み合い不良等が発生する問題点があった。
【０００４】
本発明は、上記加工手段に鑑みなされたものであり、軸受側の加工精度水準に
適合でき、高精度を長期にわたって維持できる転がり軸受装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明の請求項１記載の転がり軸受装置は、自動車用減速装置に用いられ且つ動力を伝達する歯車と、該歯車に組み込まれ且つ回転軸を支持る転がり軸受とを備えた転がり軸受装置において、前記歯車側で研削加工される少なくとも一つの軌道面は、前記歯車の端面側に突設された研削外周面を加工基準面として形成されることを特徴とする。
【０００６】
前記構成の転がり軸受装置によれば、歯車側に形成される少なくとも一つの軌道面は、歯車の端面側に突設された研削外周面を加工基準面として形成される。この場合、研削外周面は、回転中心線を基準にして形成されているので、軌道面の研削加工は、軸受側に形成される軌道面の加工水準に適合させることができる。また、歯車の歯面加工においても、この研削外周面を加工基準面にすることができるため外歯部分の加工精度を高めることができる。
【０００７】
本発明の請求項２記載の転がり軸受装置は、前記軌道面が前記転がり軸受の外輪を歯車側に一体化させたことを特徴とする請求項１記載の転がり軸受装置である。
【０００８】
前記構成の転がり軸受装置によれば、軌道面が転がり軸受の外輪を歯車側に一体化させればよい。外輪を歯車側に一体化させれば、外輪の取り付けスペースの削減ができる。
したがって、軸間距離の短縮、軽量化等が可能になるため、設計上の制約が軽減され応用範囲の拡大につながる。
【０００９】
本発明の請求項３記載の転がり軸受装置は、前記軌道面が前記転がり軸受の内輪を歯車側に一体化させたことを特徴とする請求項１記載の転がり軸受装置である。
【００１０】
前記構成の転がり軸受装置によれば、軌道面が転がり軸受の内輪を歯車側に一体化させればよい。内輪を歯車側に一体化させれば、内輪の取り付けスペースの削減ができる。
したがって、外輪を一体化させた場合と同様、軸間距離の短縮、軽量化等が可能になるため、設計上の制約が軽減され応用範囲の拡大につながる。
【００１１】
【発明の実施の形態】
以下、本発明に係る転がり軸受装置の実施形態を添付図面に基づいて詳細に説明する。図１は本発明の転がり軸受装置の第１実施形態を概念的に示した要部の一部断面図である。
【００１２】
図１に示すように、第１実施形態の転がり軸受装置１は、主要な構成部品として、動力を伝達する歯車２及び転がり軸受３として複列構成の円錐ころ軸受が示され、外歯４を形成した歯車２の内径側には、軸受３の外輪が一体化されている。このため、歯車２の内径側には、円錐ころ５を回動接触させる一対の軌道面６が形成されている。
なお、この軸受３は、単列構成でもよく、複列構成であっても、歯車２側に一方の外輪を一体化してもよいものである。
【００１３】
また、歯車２の端面側には、前記軌道面６の加工精度を維持するため研削外周面７を形成した円管部８が突設されている。この円管部８の研削外周面７は、歯車の回転中心線を基準にして予め加工されるが、図示の円管部８には、図示しない動力伝達部材に対する連結キーを受け入れるキー溝９が形成されている。
【００１４】
これに対して、前記軸受３は、前述したように両方の外輪を歯車２と一体化したものであり、図示しない軸に嵌合される内輪３ａ、前記円錐ころ５を位置決めする保持器１０からなっている。
【００１５】
ところで、このような歯車２及び軸受３の加工は、通常、鍛造、切削、歯切り、熱処理、歯面加工、軸受部加工の手順で行われるが、軸受部加工のうち、前記歯車２に形成された軌道面６の加工は、図２で示されるような手段で行われる。図２は図１における軌道面の加工状態を概念的に説明した断面図である。
すなわち、図２に示すように、歯車２は、適宜のチャック（図示せず）で保持され、円管部８の研削外周面７が、▽印で示されるように加工基準面になっている。そして、この研削外周面７は、前述したように回転中心線１１を基礎にして加工されている。
【００１６】
この結果、歯車２側に形成される軌道面６は、前記回転中心線１１に適合することになり、回転する研削砥石１２によって精度良く加工できる。また、歯面加工においても、研削外周面７を基準にすれば、精度良く加工できる。
したがって、本実施形態の転がり軸受装置１は、歯車２側に形成される少なくとも一つの軌道面が、本来の外輪に形成される軌道面の加工精度の水準と同様の水準に維持できる。
【００１７】
次に、本発明の第２実施形態に係る転がり軸受装置について説明するが、上述の第１実施形態と同様の構成部品には、同一符号を付して説明を省略または簡略化する。図３は本発明の第２実施形態に係る軸受装置を概念的に示した要部の一部断面図である。
【００１８】
図３に示すように、第２実施形態の転がり軸受装置２０は、第１実施形態の転がり軸受装置６と大きく異なる点は、歯車２側に軸受３の内輪を一体化したことにある。
そして、転がり軸受装置２０は、外歯４を形成した歯車２に複列構成の転がり軸受３が組み込まれるが、図示の軸受３は、一方の内輪を歯車２と一体化しており、図中左右方向では構成が異なっている。このことは、複列構成の軸受３については、内輪の一方又は両方を歯車２側に一体化してもよいことを意味している。
【００１９】
ところで、図３中左側にある軸受３は、通常みられる構成であって、内輪３ａ、円錐ころ５を位置決めする保持器１０及び外輪３ｂからなっている。
一方、図３中右側にある軸受３は、内輪を歯車２と一体化しているため、円錐ころ５を位置決めする保持器１０及び外輪３ｂからなっている。
この結果、内輪を一体化した歯車２側には、軌道面１３が形成される。なお、軸受３の外輪３ｂは、キー１４を介して適宜の取り付け部材１５に連結されている。
【００２０】
また、歯車２の端面に突設された円管部８は、前述した軸受３の内輪３ａに向かって延び、内輪３ａの内周面１６と嵌合する軸受２側の外周面が、研削外周面７になっている。
なお、複列構成の軸受３で、内輪の両方を歯車２側に一体化した場合は、例えば前記研削外周面７を第１実施形態にみられるように、外歯４に近接した位置に突設すればよい。
【００２１】
このようなことから、歯車２側に形成される軌道面１３は、第１実施形態と同様、前記研削外周面７を加工基準面にしているため、研削砥石１２により精度良く加工できる。
したがって、本実施形態の転がり軸受装置２０は、歯車側に形成される少なくとも一つの軌道面が、本来の内輪に形成される軌道面の加工精度の水準と同様の水準に維持できる。
【００２２】
なお、本発明に係る転がり軸受装置１，２０は、上記各実施形態の形状及び構成に限定されるものではなく、歯車２の形状や転がり軸受３の種類等は、適宜変更可能である。例えば、円錐ころ５に代えて、アンギュラ玉軸受、円筒ころ軸受等に変更してもよい。
【００２３】
【発明の効果】
以上説明したように本発明の転がり軸受装置によれば、歯車側で研削加工される少なくとも一つの軌道面は、歯車の端面側に突設された研削外周面を加工基準面として形成されている。このため、歯車側に形成される少なくとも一つの軌道面は、軸受側に形成される軌道面と同様な加工精度水準を有することになる。
したがって、歯車が回転したときには、振れ、ノイズ、噛み合い不良等が解消されるので、歯車部分では動力伝達の安定性及び耐久性を長期にわたって維持できる。
【００２４】
また、軌道面は、転がり軸受の外輪を歯車側に一体化させている。外輪を歯車側に一体化させた場合、軸受側にある外輪の取り付けスペースを削減できることになる。
したがって、軸間距離の短縮、軽量化等が得られることから、設計上の制約が軽減され応用範囲の拡大につながる。
【００２５】
さらに、軌道面は、転がり軸受の内輪を歯車側に一体化させている。内輪を歯車側に一体化させた場合、軸受側にある内輪の取り付けスペースを削減できることになる。
したがって、軸間距離の短縮、軽量化等が得られることから、設計上の制約が軽減され応用範囲の拡大につながる。
【図面の簡単な説明】
【図１】本発明の転がり軸受装置の第１実施形態を概念的に示す要部の一部断面図である。
【図２】図１における軌道面の加工状態を概念的に説明した断面図である。
【図３】本発明の転がり軸受装置の第２実施形態を概念的に示す要部の一部断面図である。
【図４】従来の転がり軸受装置の軌道面の加工状態を概念的に説明した断面図である。
【符号の説明】
１　　　転がり軸受装置
２　　　歯車
３　　　転がり軸受
３ａ　　内輪
３ｂ　　外輪
４　　　外歯
５　　　円錐ころ
６　　　軌道面
７　　　研削外周面
８　　　円管部
９　　　キー溝
１０　　保持器
１１　　回転中心線
１２　　研削砥石
１３　　軌道面
１４　　キー
１５　　取り付け部材
１６　　内周面
２０　　転がり軸受装置[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rolling bearing device used for a reduction gear for an automobile, and more particularly to an improvement for maintaining a raceway surface formed on a gear side at the same level of machining accuracy as a raceway surface formed on a bearing side.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a rolling bearing device used in a reduction gear for an automobile, for example, there is a rolling bearing device in which double-row tapered roller bearings are arranged on the inner peripheral side of a gear. In this case, the positions of the outer ring of the gear and the bearing are usually determined by press fitting with a spacer or the like, and the outer ring of the bearing may be integrated with the gear for the purpose of reducing the mounting space.
The rolling bearing device in which the outer ring of the bearing is integrated employs a grinding means as shown in FIG. 4 in processing the raceway surface formed on the gear side. That is, the gear 31 is formed such that the outer peripheral portion where the gear cutting is performed is set as a processing reference plane (indicated by a triangle), and then the raceway surface 33 on the inner diameter side with respect to the rotation center line 32 is ground by the rotation of the grinding wheel 34. It has become.
[0003]
[Problems to be solved by the invention]
According to the processing means described above, since the outer peripheral surface by the gear cutting is used as the processing reference plane, in actual processing, the rotation center line 32 and the track surface 33 are formed at positions deviated from their original positions. Will be done.
As a result, in the above-described rolling bearing device, when the bearing is mounted on the raceway surface 33 formed on the inner diameter side of the gear 31, when the gear 31 rotates, the coaxiality, runout, and the like are shifted on the gear 31 side. And the like.
[0004]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described processing means, and has as its object to provide a rolling bearing device that can conform to a processing accuracy level on the bearing side and can maintain high accuracy for a long period of time.
[0005]
[Means for Solving the Problems]
The rolling bearing device according to claim 1 of the present invention is a rolling bearing device including a gear used for an automobile speed reducer and transmitting power, and a rolling bearing incorporated in the gear and supporting a rotating shaft, At least one raceway surface ground on the gear side is formed using a grinding outer peripheral surface protruding from an end surface side of the gear as a processing reference plane.
[0006]
According to the rolling bearing device having the above configuration, at least one raceway surface formed on the gear side is formed using a grinding outer peripheral surface protrudingly provided on an end surface side of the gear as a processing reference plane. In this case, since the grinding outer peripheral surface is formed with reference to the rotation center line, the grinding of the raceway surface can be adapted to the processing level of the raceway surface formed on the bearing side. Also, in the tooth surface processing of the gear, the grinding outer peripheral surface can be used as a processing reference surface, so that the processing accuracy of the external tooth portion can be improved.
[0007]
The rolling bearing device according to claim 2 of the present invention is the rolling bearing device according to claim 1, wherein the raceway surface integrates an outer ring of the rolling bearing on a gear side.
[0008]
According to the rolling bearing device having the above configuration, the outer race of the rolling bearing may be integrated with the gear side on the raceway surface. If the outer ring is integrated with the gear, the space for mounting the outer ring can be reduced.
Therefore, the distance between the shafts can be reduced, the weight can be reduced, and the like, so that design restrictions can be reduced and the application range can be expanded.
[0009]
The rolling bearing device according to claim 3 of the present invention is the rolling bearing device according to claim 1, wherein the raceway surface integrates an inner ring of the rolling bearing with a gear side.
[0010]
According to the rolling bearing device having the above-described configuration, the raceway surface may integrate the inner race of the rolling bearing with the gear. If the inner ring is integrated with the gear, the space for mounting the inner ring can be reduced.
Therefore, as in the case where the outer ring is integrated, the distance between the shafts can be reduced and the weight can be reduced, so that design restrictions are reduced and the application range is expanded.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a rolling bearing device according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a partial sectional view of a main part conceptually showing a first embodiment of a rolling bearing device of the present invention.
[0012]
As shown in FIG. 1, a rolling bearing device 1 according to the first embodiment includes a gear 2 for transmitting power and a double-row tapered roller bearing as a rolling bearing 3 as main components. The outer ring of the bearing 3 is integrated with the formed gear 2 on the inner diameter side. For this reason, a pair of raceway surfaces 6 for rotatingly contacting the tapered rollers 5 are formed on the inner diameter side of the gear 2.
The bearing 3 may have a single-row configuration or a double-row configuration, or may have one outer ring integrated with the gear 2.
[0013]
On the end face side of the gear 2, a circular tube portion 8 having a grinding outer peripheral surface 7 formed thereon is projected so as to maintain the processing accuracy of the raceway surface 6. The grinding outer peripheral surface 7 of the circular tube portion 8 is previously processed with reference to the rotation center line of the gear. The illustrated circular tube portion 8 has a key groove 9 for receiving a connection key for a power transmission member (not shown). Is formed.
[0014]
On the other hand, the bearing 3 is formed by integrating both outer rings with the gear 2 as described above, and includes an inner ring 3 a fitted to a shaft (not shown) and a retainer 10 for positioning the tapered rollers 5. Has become.
[0015]
By the way, such processing of the gear 2 and the bearing 3 is usually performed in a procedure of forging, cutting, gear cutting, heat treatment, tooth flank processing, and processing of the bearing portion. The processing of the track surface 6 is performed by means as shown in FIG. FIG. 2 is a cross-sectional view conceptually illustrating the processing state of the raceway surface in FIG.
That is, as shown in FIG. 2, the gear 2 is held by an appropriate chuck (not shown), and the grinding outer peripheral surface 7 of the circular tube portion 8 is a processing reference surface as shown by a mark. . The ground outer peripheral surface 7 is processed based on the rotation center line 11 as described above.
[0016]
As a result, the raceway surface 6 formed on the side of the gear 2 conforms to the rotation center line 11, and can be accurately processed by the rotating grinding wheel 12. Also, in the tooth surface processing, if the grinding outer peripheral surface 7 is used as a reference, the processing can be performed with high accuracy.
Therefore, in the rolling bearing device 1 of the present embodiment, at least one raceway surface formed on the gear 2 side can be maintained at a level similar to the level of processing accuracy of the raceway surface originally formed on the outer ring.
[0017]
Next, a rolling bearing device according to a second embodiment of the present invention will be described. The same components as those in the above-described first embodiment will be denoted by the same reference numerals, and description thereof will be omitted or simplified. FIG. 3 is a partial sectional view of a main part conceptually showing a bearing device according to a second embodiment of the present invention.
[0018]
As shown in FIG. 3, the rolling bearing device 20 of the second embodiment is significantly different from the rolling bearing device 6 of the first embodiment in that the inner ring of the bearing 3 is integrated with the gear 2 side.
In the rolling bearing device 20, a double-row rolling bearing 3 is incorporated into the gear 2 having the external teeth 4 formed therein. In the illustrated bearing 3, one inner ring is integrated with the gear 2, The configuration is different in the directions. This means that one or both of the inner rings of the double-row bearing 3 may be integrated with the gear 2.
[0019]
Incidentally, the bearing 3 on the left side in FIG. 3 has a structure which is usually seen, and comprises an inner ring 3a, a retainer 10 for positioning the tapered rollers 5, and an outer ring 3b.
On the other hand, the bearing 3 on the right side in FIG. 3 includes the retainer 10 for positioning the tapered roller 5 and the outer ring 3b because the inner ring is integrated with the gear 2.
As a result, the raceway surface 13 is formed on the side of the gear 2 in which the inner ring is integrated. The outer ring 3b of the bearing 3 is connected to an appropriate mounting member 15 via a key 14.
[0020]
The circular tube portion 8 protruding from the end surface of the gear 2 extends toward the inner ring 3a of the bearing 3 described above, and the outer peripheral surface of the bearing 2 side to be fitted with the inner peripheral surface 16 of the inner ring 3a has a grinding outer periphery. It is face 7.
In the case where both the inner ring and the gear 2 are integrated in the double-row bearing 3, for example, the grinding outer peripheral surface 7 protrudes to a position close to the outer teeth 4 as seen in the first embodiment. Just set it.
[0021]
For this reason, since the raceway surface 13 formed on the gear 2 side uses the grinding outer peripheral surface 7 as a processing reference surface, similarly to the first embodiment, the raceway surface 13 can be accurately processed by the grinding wheel 12.
Therefore, in the rolling bearing device 20 of the present embodiment, at least one raceway surface formed on the gear side can be maintained at a level similar to the level of machining accuracy of the raceway surface originally formed on the inner ring.
[0022]
In addition, the rolling bearing devices 1 and 20 according to the present invention are not limited to the shapes and configurations of the above embodiments, and the shape of the gear 2 and the type of the rolling bearing 3 can be appropriately changed. For example, in place of the tapered roller 5, an angular ball bearing, a cylindrical roller bearing, or the like may be used.
[0023]
【The invention's effect】
As described above, according to the rolling bearing device of the present invention, at least one raceway surface to be ground on the gear side is formed with the ground outer peripheral surface protruding from the end face side of the gear as a processing reference plane. . For this reason, at least one raceway surface formed on the gear side has the same processing accuracy level as the raceway surface formed on the bearing side.
Therefore, when the gear rotates, run-out, noise, poor meshing and the like are eliminated, so that the stability and durability of power transmission can be maintained for a long time in the gear portion.
[0024]
Further, the raceway surface integrates the outer ring of the rolling bearing with the gear side. When the outer ring is integrated with the gear side, the space for mounting the outer ring on the bearing side can be reduced.
Therefore, a reduction in the distance between the shafts, a reduction in the weight, and the like can be obtained, so that design restrictions are reduced and the application range is expanded.
[0025]
Further, the raceway surface integrates the inner ring of the rolling bearing on the gear side. When the inner ring is integrated with the gear, the space for mounting the inner ring on the bearing side can be reduced.
Therefore, a reduction in the distance between the shafts, a reduction in the weight, and the like can be obtained, so that design restrictions are reduced and the application range is expanded.
[Brief description of the drawings]
FIG. 1 is a partial sectional view of a main part conceptually showing a first embodiment of a rolling bearing device of the present invention.
FIG. 2 is a cross-sectional view conceptually illustrating a processing state of a raceway surface in FIG.
FIG. 3 is a partial sectional view of a main part conceptually showing a second embodiment of the rolling bearing device of the present invention.
FIG. 4 is a cross-sectional view conceptually illustrating a processing state of a raceway surface of a conventional rolling bearing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rolling bearing device 2 Gear 3 Rolling bearing 3a Inner ring 3b Outer ring 4 Outer teeth 5 Tapered roller 6 Track surface 7 Grinding outer peripheral surface 8 Circular tube portion 9 Key groove 10 Cage 11 Rotation center line 12 Grinding grindstone 13 Track surface 14 Key 15 Mounting Member 16 Inner peripheral surface 20 Rolling bearing device

Claims (3)

自動車用減速装置に用いられ且つ動力を伝達する歯車と、該歯車に組み込まれ且つ回転軸を支持する転がり軸受とを備えた転がり軸受装置において、
前記歯車側で研削加工される少なくとも一つの軌道面は、前記歯車の端面側に突設された研削外周面を加工基準面として形成されることを特徴とする転がり軸受装置。In a rolling bearing device including a gear used for an automotive reduction gear and transmitting power, and a rolling bearing incorporated in the gear and supporting a rotating shaft,
A rolling bearing device, wherein at least one raceway surface to be ground on the gear side is formed using a grinding outer peripheral surface protruding from an end surface side of the gear as a processing reference plane. 前記軌道面は、前記転がり軸受の外輪を歯車側に一体化させたことを特徴とする請求項１記載の転がり軸受装置。The rolling bearing device according to claim 1, wherein the raceway surface has an outer ring of the rolling bearing integrated with a gear side. 前記軌道面は、前記転がり軸受の内輪を歯車側に一体化させたことを特徴とする請求項１記載の転がり軸受装置。The rolling bearing device according to claim 1, wherein the raceway surface has an inner ring of the rolling bearing integrated with a gear side.
JP2002177259A 2002-06-18 2002-06-18 Rolling bearing device Pending JP2004019823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002177259A JP2004019823A (en) 2002-06-18 2002-06-18 Rolling bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002177259A JP2004019823A (en) 2002-06-18 2002-06-18 Rolling bearing device

Publications (1)

Publication Number Publication Date
JP2004019823A true JP2004019823A (en) 2004-01-22

Family

ID=31175340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002177259A Pending JP2004019823A (en) 2002-06-18 2002-06-18 Rolling bearing device

Country Status (1)

Country Link
JP (1) JP2004019823A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006013079B3 (en) * 2006-03-22 2007-09-06 Ab Skf Machine part rotating around shaft on tapered roller bearing, designed as planet wheel with integrated bearing
WO2007125927A1 (en) * 2006-04-25 2007-11-08 Nsk Ltd. Method of producing bearing unit-use outer race

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006013079B3 (en) * 2006-03-22 2007-09-06 Ab Skf Machine part rotating around shaft on tapered roller bearing, designed as planet wheel with integrated bearing
WO2007125927A1 (en) * 2006-04-25 2007-11-08 Nsk Ltd. Method of producing bearing unit-use outer race
JP2007315589A (en) * 2006-04-25 2007-12-06 Nsk Ltd Method of manufacturing outer ring for bearing unit
US8341844B2 (en) 2006-04-25 2013-01-01 Nsk Ltd. Manufacturing method of an outer ring for a bearing unit

Similar Documents

Publication Publication Date Title
JP2004522923A5 (en)
US6503168B2 (en) Planetary gear device for reducing speed of an output shaft of a motor
CN102639270B (en) Method of machining sealing surface
JP2006329320A (en) Wheel bearing device
EP1486289A3 (en) Method of processing antifriction bearing unit for wheel
JPH11201151A (en) Tapered roller bearing
JP2004019823A (en) Rolling bearing device
JP5549218B2 (en) Method of manufacturing inner ring in wheel bearing device
JP2001301407A (en) Hub unit for vehicle
JP2008169871A (en) Tapered roller bearing and inner ring machining method for tapered roller bearing
JP2003175702A (en) Bearing device for driving wheel
JP2007514914A (en) Wheel bearing outer race
JP4948856B2 (en) Brake rotor machining method for drive wheel bearing unit
RU2002122492A (en) DEVICE FOR HUB UNIT OF DRIVING WHEEL OF INDEPENDENT VEHICLE SUSPENSION
JP2002370104A (en) Bearing unit for wheel and method of manufacturing the same
JPH08210359A (en) Rolling bearing
JP2005349928A (en) Bearing device for wheel
JP2006009930A (en) Bearing device for supporting pinion shaft
JPH028512A (en) Triple race bearing
JP2004150483A (en) Rolling bearing unit
JP2005119383A (en) Bearing device for wheel
JP2008101646A (en) Bearing with retaining ring
WO2003064185A1 (en) Bearing unit for vehicle wheel
JP2004036782A (en) Rolling bearing device
JP2535876Y2 (en) Fixed structure of rolling bearing

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050613

RD04 Notification of resignation of power of attorney

Effective date: 20060324

Free format text: JAPANESE INTERMEDIATE CODE: A7424

RD04 Notification of resignation of power of attorney

Effective date: 20071128

Free format text: JAPANESE INTERMEDIATE CODE: A7424

A977 Report on retrieval

Effective date: 20080221

Free format text: JAPANESE INTERMEDIATE CODE: A971007

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080305

A02 Decision of refusal

Effective date: 20080625

Free format text: JAPANESE INTERMEDIATE CODE: A02