JP2010230053A - Bearing - Google Patents

Bearing Download PDF

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Publication number
JP2010230053A
JP2010230053A JP2009076551A JP2009076551A JP2010230053A JP 2010230053 A JP2010230053 A JP 2010230053A JP 2009076551 A JP2009076551 A JP 2009076551A JP 2009076551 A JP2009076551 A JP 2009076551A JP 2010230053 A JP2010230053 A JP 2010230053A
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Japan
Prior art keywords
lid member
rolling element
outer ring
slit
insertion hole
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JP2009076551A
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Japanese (ja)
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JP5334640B2 (en
Inventor
Naoki Koshino
尚樹 越野
Yuta Kobayashi
勇太 小林
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Nippon Thompson Co Ltd
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Nippon Thompson Co Ltd
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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
    • 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
    • F16C19/22—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
    • F16C19/36—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 a single row of rollers
    • F16C19/361—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 a single row of rollers with cylindrical rollers
    • F16C19/362—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 a single row of rollers with cylindrical rollers the rollers being crossed within the single row
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing capable of securely restraining a lid member 5 from rattling at low cost. <P>SOLUTION: An inner ring 2 is combined with an outer ring 1, and rolling elements 3 are incorporated between the outer and inner rings 1, 2. Then, the bearing is configured so as to form a rolling element insertion hole 4 on either the outer ring 1 or the inner ring 2 and to insert the lid member 5 into the rolling element insertion hole 4. Additionally, the bearing is configured so as to form a threaded hole 13 on the lid member 5 and at the same time to form the first slit 15 along the axial direction of the threaded hole 13 and to push and open the first slit 15 by screwing a screw member 14 into the threaded hole 13 and to enlarge the outer diameter of the lid member 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

この発明は、外輪に内輪を組み込むとともに、これら内輪および外輪間に転動体を組み込んだ軸受に関する。   The present invention relates to a bearing in which an inner ring is incorporated in an outer ring and a rolling element is incorporated between the inner ring and the outer ring.

この種の軸受として、特許文献１に開示されたものが従来から知られている。この従来の軸受の構造を示したのが図４，５である。
この従来の軸受は、外輪１内に内輪２をはめ合わせるとともに、これら外輪１及び内輪２間にころからなる転動体３を介在させている。
上記転動体３は、外輪１に形成した転動体挿入孔４から一つずつ挿入するが、転動体３を挿入し終わったら、この転動体挿入孔４は蓋部材５でふさがれる。このようにして挿入された転動体３は、図５に示すように、内輪２に形成したＶ字状のトラック６とこのトラック６と対向する図示していない外輪１のトラックとの間で転動することになる。 As this type of bearing, one disclosed in Patent Document 1 has been conventionally known. FIGS. 4 and 5 show the structure of this conventional bearing.
In this conventional bearing, an inner ring 2 is fitted in an outer ring 1, and rolling elements 3 made of rollers are interposed between the outer ring 1 and the inner ring 2.
The rolling elements 3 are inserted one by one from the rolling element insertion holes 4 formed in the outer ring 1. When the rolling elements 3 have been inserted, the rolling element insertion holes 4 are blocked by the lid member 5. As shown in FIG. 5, the rolling element 3 inserted in this manner is rolled between a V-shaped track 6 formed on the inner ring 2 and a track of the outer ring 1 (not shown) facing the track 6. Will move.

上記のようにした外輪１のＶ字状のトラックを形成する過程では、上記転動体挿入孔４に蓋部材５をあらかじめ圧入するとともに、このときには外輪１と蓋部材５との相対位置を固定化するためにピン８を圧入しておく。このように蓋部材５を転動体挿入孔４に圧入して固定化したら、外輪１のＶ字状の上記トラックと蓋部材５のＶ溝７とを一体的に旋削加工をする。   In the process of forming the V-shaped track of the outer ring 1 as described above, the lid member 5 is pre-pressed into the rolling element insertion hole 4 and at this time, the relative position between the outer ring 1 and the lid member 5 is fixed. For this purpose, the pin 8 is press-fitted. When the lid member 5 is thus press-fitted into the rolling element insertion hole 4 and fixed, the V-shaped track of the outer ring 1 and the V groove 7 of the lid member 5 are integrally turned.

上記のように蓋部材５のＶ溝７と外輪１のトラックとを一体形成するのは、これらＶ溝７を外輪１のトラックと面一に連続させるためである。もし、このＶ溝７と上記トラックとの間に段差などができてしまうと、転動体３のスムーズな転動が損なわれるので、上記したように蓋部材５を転動体挿入孔４に圧入した状態で、外輪１とともに蓋部材５を一体的に旋削加工して、外輪１のトラックと上記Ｖ溝７とを面一に連続させるようにしている。   The reason why the V-groove 7 of the lid member 5 and the track of the outer ring 1 are integrally formed as described above is to make these V-grooves 7 flush with the track of the outer ring 1. If a step or the like is formed between the V-groove 7 and the track, smooth rolling of the rolling element 3 is impaired. Therefore, the lid member 5 is press-fitted into the rolling element insertion hole 4 as described above. In this state, the lid member 5 is integrally turned together with the outer ring 1 so that the track of the outer ring 1 and the V-groove 7 are flush with each other.

上記のように外輪１のトラックと蓋部材５のＶ溝７とを一体加工したら、蓋部材５を転動体挿入孔４に圧入したまま、外輪１に焼入れなどの熱処理を施す。これによって、外輪１とともに蓋部材５のＶ溝７の部分にも焼入れが施される。
また、上記転動体挿入孔４を開放したまま熱処理を施せば、外輪１の転動体挿入孔４の周辺とその他の部分との間で熱による変形量が多少異なるので、それが外輪１にひずみを発生させる原因になるが、上記のように蓋部材５を圧入しておくことによって、ひずみの発生量を小さくできる。 When the track of the outer ring 1 and the V groove 7 of the lid member 5 are integrally processed as described above, the outer ring 1 is subjected to heat treatment such as quenching while the lid member 5 is press-fitted into the rolling element insertion hole 4. Thereby, the outer ring 1 and the V groove 7 portion of the lid member 5 are also quenched.
Further, if heat treatment is performed with the rolling element insertion hole 4 open, the amount of deformation due to heat slightly differs between the periphery of the rolling element insertion hole 4 of the outer ring 1 and other parts, and this causes strain on the outer ring 1. However, the amount of distortion can be reduced by press-fitting the lid member 5 as described above.

上記のように外輪１を熱処理してそれを常温に戻したら、再び、転動体挿入孔４から蓋部材５を抜き取り、外輪１に内輪２を入れるとともに、上記転動体挿入孔４から転動体３を挿入する。転動体３を挿入し終えたら、転動体挿入孔４を蓋部材５でふさぐとともに、ピン８を再び圧入して外輪１と蓋部材５との相対位置を固定化する。
なお、図中符号９，１０は挿入された転動体３の傾きを保つためのガイド溝である。 When the outer ring 1 is heat-treated and returned to room temperature as described above, the lid member 5 is again removed from the rolling element insertion hole 4 and the inner ring 2 is inserted into the outer ring 1, and the rolling element 3 is extracted from the rolling element insertion hole 4. Is inserted. When the rolling element 3 has been inserted, the rolling element insertion hole 4 is closed with the lid member 5, and the pin 8 is press-fitted again to fix the relative position between the outer ring 1 and the lid member 5.
In addition, the code | symbols 9 and 10 in a figure are the guide grooves for maintaining the inclination of the inserted rolling element 3. FIG.

また、熱処理が終了した外輪１を常温に戻すと、外輪１と蓋部材５との間で収縮量に差が生じる。そのために、転動体挿入孔４に対して蓋部材５の外径を大きくして締め代を確保しておいても、外輪１の外径が３００ｍｍを超えるような大径の軸受では、その熱処理変形で、転動体挿入孔４が相対的に大きくなり、蓋部材５が転動体挿入孔４内でガタ付いてしまう。   Further, when the outer ring 1 after the heat treatment is returned to room temperature, a difference in contraction amount occurs between the outer ring 1 and the lid member 5. Therefore, even if the outer diameter of the lid member 5 is increased with respect to the rolling element insertion hole 4 to secure the tightening allowance, the heat treatment is performed in a large-diameter bearing in which the outer diameter of the outer ring 1 exceeds 300 mm. Due to the deformation, the rolling element insertion hole 4 becomes relatively large, and the lid member 5 is rattled in the rolling element insertion hole 4.

蓋部材５が転動体挿入孔４内でガタ付くと次のような問題が発生する。
１．ガタ付いている蓋部材５の部分で転動体３がスムーズに転動しなくなるので、外輪１と内輪２との円滑な相対回転に支障が生じるだけでなく、回転トルクもバラ付いてしまう。また、転動体３がスムーズに転動しなくなると、外輪１と内輪２との間で、正確な位置決めができなくなることもある。
２．蓋部材５がガタ付いてＶ溝７と外輪１のトラックとに段差ができると、転動体３がその段差に引っかかって偏磨耗すると寿命が短くなるとともに、転動体３が段差に当たったときの衝撃で騒音が発生する。
３．蓋部材５のＶ溝７が、外輪１のトラックから退避していると、転動体３が蓋部材５の部分で浮いた状態になるので、荷重を受けられなくなる。そのために、全体的にも荷重を受けるバランスが崩れて、モーメント荷重等が作用したときには、荷重作用点等での位置決め精度に支障が出たり、定格荷重が低下したりする。 When the lid member 5 rattles in the rolling element insertion hole 4, the following problem occurs.
1. Since the rolling element 3 does not roll smoothly at the portion of the cover member 5 that is rattled, not only does the relative rotation between the outer ring 1 and the inner ring 2 interfere smoothly, but also the rotational torque varies. Further, if the rolling element 3 does not roll smoothly, accurate positioning may not be possible between the outer ring 1 and the inner ring 2.
2. If the lid member 5 is loose and there is a step between the V-groove 7 and the track of the outer ring 1, the life of the rolling element 3 will be shortened if the rolling element 3 is caught by the step and wears unevenly. Noise is generated by impact.
3. When the V-groove 7 of the lid member 5 is retracted from the track of the outer ring 1, the rolling element 3 is in a floating state at the portion of the lid member 5, so that no load can be received. For this reason, when the balance of the load is lost as a whole and a moment load or the like is applied, the positioning accuracy at the load application point or the like is hindered or the rated load is reduced.

特開２００２−１３５４０号公報JP 2002-13540 A

上記のように従来の軸受は、蓋部材５のガタ付を押さえる手段はピン８しかないので、ピン８で蓋部材５を正確に位置決めしてガタ付を押さえようとすると、そのピン８を挿入するピン孔に対してピン自体をぴったりとはめいれなければならない。しかし、ピン孔にピン８をぴったりとはめ入れるためには、ピン孔の形成位置も含めて、それらの寸法精度を厳密に管理しなければならないが、それは非常に難しく、しかも、コストがかかるという問題があった。
この発明の目的は、蓋部材のガタ付を、低コストで確実に押えることができる軸受を提供することである。 As described above, the conventional bearing has only the pin 8 as a means for suppressing the backlash of the lid member 5. Therefore, if the lid member 5 is accurately positioned with the pin 8 and the backlash is to be suppressed, the pin 8 is inserted. The pin itself must be fitted into the pin hole to be fitted. However, in order to fit the pin 8 into the pin hole, it is necessary to strictly control the dimensional accuracy including the formation position of the pin hole, which is very difficult and costly. There was a problem.
An object of the present invention is to provide a bearing that can reliably hold back the backlash of the lid member at low cost.

第１の発明は、外輪に内輪を組み合わせ、これら外輪および内輪間に転動体を組み込むとともに、外輪あるいは内輪のいずれか一方に転動体挿入孔を形成し、この転動体挿入孔に蓋部材を挿入した軸受において、上記蓋部材にはねじ孔を形成するとともに、このねじ孔の軸線方向に沿った第１スリットを形成し、上記ねじ孔にねじ部材をねじ込んで第１スリットを押し開き、蓋部材の外径を拡大する構成にした点に特徴を有する。   In the first invention, an inner ring is combined with an outer ring, a rolling element is incorporated between the outer ring and the inner ring, a rolling element insertion hole is formed in either the outer ring or the inner ring, and a lid member is inserted into the rolling element insertion hole. In the above bearing, a screw hole is formed in the lid member, a first slit is formed along the axial direction of the screw hole, the screw member is screwed into the screw hole, and the first slit is pushed open. It is characterized in that it is configured to expand the outer diameter of the.

第２の発明は、上記第１スリットが押し開かれて蓋部材の外径が拡大するときの拡大起点になる位置に、蓋部材の円周方向に伸びる第２スリットを形成した点に特徴を有する。
第３の発明は、上記転動体をころにするとともに、これらころを互いにクロスさせてクロスローラ型にした点に特徴を有する。 The second invention is characterized in that a second slit extending in the circumferential direction of the lid member is formed at a position that becomes an expansion starting point when the outer diameter of the lid member is expanded by pushing the first slit open. Have.
The third invention is characterized in that the rolling element is a roller and the rollers are crossed to form a cross roller type.

第１〜３の発明によれば、蓋部材に形成したねじ孔にねじ部材をねじ込むことによって、蓋部材をその第１スリットから拡大させられるので、外輪あるいは内輪の熱処理後に、外径を事後的に拡大した蓋部材が、上記ねじ孔に圧入されたと同じになる。
したがって、熱処理後に、蓋部材の外径が転動体挿入孔の内径よりも小さくなったとしても、転動体挿入孔に蓋部材を、圧入状態でぴったりと挿入することができ、当該蓋部材の位置決めをすることができる。
しかも、上記したように蓋部材は、上記のように事後的に圧入状態を維持できるので、その寸法精度を厳密にしなくてもよく、その分、コストダウンを図ることができる。 According to the first to third inventions, the screw member is screwed into the screw hole formed in the cover member, so that the cover member can be expanded from the first slit. The lid member expanded to the same size as that pressed into the screw hole is the same.
Therefore, even if the outer diameter of the lid member becomes smaller than the inner diameter of the rolling element insertion hole after the heat treatment, the lid member can be inserted into the rolling element insertion hole in a press-fit state, and the positioning of the lid member can be performed. Can do.
In addition, since the lid member can maintain the press-fitted state afterwards as described above, the dimensional accuracy does not have to be strict and the cost can be reduced accordingly.

第２の発明によれば、第１スリットに加えて、蓋部材の円周方向に伸びる第２スリットを形成したので、第１スリットがさらに開きやすくなり、その分、小さな力で蓋部材の外径を拡大することができる。   According to the second invention, since the second slit extending in the circumferential direction of the lid member is formed in addition to the first slit, the first slit becomes easier to open, and the outer portion of the lid member can be opened with a small force. The diameter can be enlarged.

外輪に内輪を組み付けた状態の部分断面図である。It is a fragmentary sectional view in the state where the inner ring was assembled to the outer ring. 蓋部材とピンとを示した斜視図である。It is the perspective view which showed the cover member and the pin. 蓋部材とねじ部材とを示した斜視図である。It is the perspective view which showed the cover member and the screw member. 従来の軸受を示すもので、外輪と内輪とを組み合わせた状態の斜視図である。It is a perspective view of the state which showed the conventional bearing and combined the outer ring | wheel and the inner ring | wheel. 従来の軸受を示すもので、外輪に内輪を組み付けた状態の部分断面図である。FIG. 9 is a partial cross-sectional view showing a conventional bearing in a state where an inner ring is assembled to an outer ring.

図１〜図３は、この発明の実施形態を示すものであるが、その外輪１内に内輪２をはめ合わせるとともに、これら外輪１及び内輪２間に転動体であるころ３を介在させる。
さらに、上記外輪１に転動体挿入孔４を形成するとともに、この転動体挿入孔４から上記ころ３を一つずつ挿入するが、ころ３を挿入し終わったら、この転動体挿入孔４は蓋部材５でふさがれる。 1 to 3 show an embodiment of the present invention, in which an inner ring 2 is fitted in an outer ring 1 and rollers 3 as rolling elements are interposed between the outer ring 1 and the inner ring 2.
Further, a rolling element insertion hole 4 is formed in the outer ring 1 and the rollers 3 are inserted one by one from the rolling element insertion hole 4. When the rollers 3 have been inserted, the rolling element insertion hole 4 has a lid. It is blocked by the member 5.

このようにして挿入されたころ３は、図１に示すように、内輪２に形成したＶ字状のトラック６とこのトラック６と対向する図示していない外輪１のトラックとの間で転動することになる。
なお、上記ころ３は、それらの回転中心線を互いにクロスさせてクロスローラ型にしている。 As shown in FIG. 1, the roller 3 inserted in this way rolls between a V-shaped track 6 formed on the inner ring 2 and a track of the outer ring 1 (not shown) facing the track 6. Will do.
The roller 3 has a cross roller type in which the rotation center lines are crossed with each other.

そして、上記蓋部材５には蓋部材５を貫通するピン圧入孔１１を形成するとともに、外輪１にも上記転動体挿入孔４の軸線に直交する方向のピン圧入孔１２を貫通させている。
さらに、上記蓋部材５であって、転動体挿入孔４に対する挿入方向後端面にはねじ孔１３を形成しているが、このねじ孔１３に図３に示したねじ部材１４をねじ込むようにしている。なお、上記ねじ孔１３の開口部には外に向かって拡大するテーパー面１３ａを形成するとともに、このねじ部材１４はその頭部端面に向かって徐々に外径を大きくしたテーパー部１４ａを形成している。 The lid member 5 is provided with a pin press-fit hole 11 penetrating the lid member 5, and the outer ring 1 is also penetrated with a pin press-fit hole 12 in a direction perpendicular to the axis of the rolling element insertion hole 4.
Further, a screw hole 13 is formed on the rear end surface of the lid member 5 in the insertion direction with respect to the rolling element insertion hole 4, and the screw member 14 shown in FIG. 3 is screwed into the screw hole 13. Yes. In addition, a tapered surface 13a that expands outward is formed in the opening of the screw hole 13, and the screw member 14 forms a tapered portion 14a that gradually increases in outer diameter toward the head end surface. ing.

また、この蓋部材５には上記ねじ孔の軸線方向に沿った第１スリット１５を形成するとともに、この第１スリット１５が押し開かれて蓋部材５の外径が拡大するときの拡大起点になる位置に、蓋部材５の円周方向に伸びる第２スリット１６を形成している。   In addition, the lid member 5 is formed with a first slit 15 along the axial direction of the screw hole, and the first slit 15 is pushed open to increase the outer diameter of the lid member 5. A second slit 16 extending in the circumferential direction of the lid member 5 is formed at the position.

上記のようにした蓋部材５は、そのねじ孔１３にねじ部材１４をねじ込むと、このねじ部材１４のテーパー部１４ａがねじ孔１３のテーパー面１３ａに圧入されることになるが、そのときのくさび効果で第１スリット１５が押し開かれる。そして、第１スリット１５が押し開かれて蓋部材５の外径が拡大するときの拡大起点になる位置に第２スリット１６が形成されているので、上記ねじ孔１３にそれほど大きな力が作用しなくても、第１スリット１５が押し開かれることになる。   When the screw member 14 is screwed into the screw hole 13, the taper portion 14a of the screw member 14 is press-fitted into the taper surface 13a of the screw hole 13. The first slit 15 is pushed open by the wedge effect. And since the 2nd slit 16 is formed in the position used as the expansion starting point when the 1st slit 15 is pushed open and the outer diameter of the cover member 5 expands, so much force acts on the said screw hole 13. FIG. Even if not, the first slit 15 is pushed open.

次に、外輪１および内輪２の加工および組み合わせ工程を説明する。
先ず、従来と同様に外輪１の旋削加工時に転動体挿入孔４内に蓋部材５圧入して、外輪１のトラックとともに、蓋部材５にＶ溝７を一体に旋削加工する。なお、この旋削加工時には、ピン８をピン圧入孔１１，１２に圧入して転動体挿入孔４と蓋部材５との相対位置を固定化しておく。 Next, processing and combination processes of the outer ring 1 and the inner ring 2 will be described.
First, the lid member 5 is press-fitted into the rolling element insertion hole 4 during turning of the outer ring 1 as in the prior art, and the V-groove 7 is integrally turned into the lid member 5 together with the track of the outer ring 1. In this turning process, the pin 8 is press-fitted into the pin press-fitting holes 11 and 12 so that the relative position between the rolling element insertion hole 4 and the lid member 5 is fixed.

上記のように外輪１のトラックとともに蓋部材５のＶ溝７を形成したら、その状態を保ちながら外輪１および蓋部材５に焼入れ等の熱処理を施す。そして、熱処理が終了したら、ピン８を抜くとともに蓋部材５を転動体挿入孔４から抜き取る。このように蓋部材５を抜き取った状態で、外輪１に内輪２をはめ合わせるとともに、上記転動体挿入孔４からころ３を一つずつ、それらの回転中心線を交互にクロスさせながら挿入する。   When the V groove 7 of the lid member 5 is formed together with the track of the outer ring 1 as described above, the outer ring 1 and the lid member 5 are subjected to heat treatment such as quenching while maintaining the state. When the heat treatment is completed, the pin 8 is pulled out and the lid member 5 is pulled out from the rolling element insertion hole 4. With the lid member 5 removed in this manner, the inner ring 2 is fitted to the outer ring 1 and the rollers 3 are inserted one by one from the rolling element insertion holes 4 while alternately crossing their rotation center lines.

ころ３を挿入し終えたら、上記転動体挿入孔４に蓋部材５を挿入するとともに、外輪１のピン孔１２と蓋部材５のピン孔１１とを一致させて、それらにピン８を再び圧入して、外輪１と蓋部材５との相対位置を特定する。このようにピン８を圧入して、外輪１と蓋部材５との相対位置を特定するのは、蓋部材５のＶ溝７と外輪１のトラックとの相対位置を特定するのが目的である。   When the roller 3 has been inserted, the lid member 5 is inserted into the rolling element insertion hole 4, the pin hole 12 of the outer ring 1 and the pin hole 11 of the lid member 5 are aligned, and the pin 8 is press-fitted into them again. Then, the relative position between the outer ring 1 and the lid member 5 is specified. The purpose of press-fitting the pin 8 and specifying the relative position between the outer ring 1 and the lid member 5 is to specify the relative position between the V groove 7 of the lid member 5 and the track of the outer ring 1. .

そして、上記の状態では、前記したように外輪１と蓋部材５との熱収縮率の相違により、蓋部材５は転動体挿入孔４に対して多少ガタ付いているが、この段階で蓋部材５の位置を微調整して、ねじ部材１４をねじ孔１３にねじ込む。このようにねじ孔１３にねじ部材１４をねじ込むことによって、そのときのくさび効果で第１スリット１５が押し開かれ、蓋部材５が転動体挿入孔４に圧入された状態を事後的に実現できる。   In the above state, the lid member 5 is somewhat loose with respect to the rolling element insertion hole 4 due to the difference in thermal contraction rate between the outer ring 1 and the lid member 5 as described above. 5 is finely adjusted, and the screw member 14 is screwed into the screw hole 13. By screwing the screw member 14 into the screw hole 13 in this way, the first slit 15 is pushed open by the wedge effect at that time, and the state in which the lid member 5 is press-fitted into the rolling element insertion hole 4 can be realized afterwards. .

したがって、この実施形態によれば、ピン８は、蓋部材５と外輪１との相対的な位置関係を特定できればよく、厳密な寸法管理は要求されない。しかも、蓋部材５を転動体挿入孔４に圧入した状態を事後的に実現できるので、この状態では蓋部材５がガタ付いたりしない。   Therefore, according to this embodiment, the pin 8 only needs to be able to specify the relative positional relationship between the lid member 5 and the outer ring 1, and strict dimensional management is not required. In addition, since the state in which the lid member 5 is press-fitted into the rolling element insertion hole 4 can be realized afterwards, the lid member 5 does not rattle in this state.

なお、上記実施形態では皿ねじ状のねじ部材１４を用いたが、第１スリット１５を押し開く力を作用させられるものであれば、テーパーねじ等どのようなねじ部材を用いてもよい。
また、このねじ部材１４を締め付けるのに、レンチを用いてもよいし、ドライバーを用いてもよい。したがって、ねじ部材１４の頭部には、レンチやドライバーなどの工具に応じて多角形穴やプラスあるいはマイナス溝が形成される。あるいはこの頭部が多角形であってもよい。ただし、ねじ部材１４を締め付けるトルクを調整して、蓋部材の外径の拡大量を調整して外輪１にひずみ等が生じないように考慮しなければならない。
さらに、蓋部材５のねじ部にはロックタイト等の緩み止めをしてもよいし、蓋部材５の外径ないし転動体挿入孔４に接着剤を塗布してもよい。 In the above embodiment, the countersunk screw member 14 is used. However, any screw member such as a taper screw may be used as long as a force that pushes the first slit 15 is applied.
Further, a wrench or a screwdriver may be used to tighten the screw member 14. Therefore, a polygonal hole or a plus or minus groove is formed in the head of the screw member 14 according to a tool such as a wrench or a screwdriver. Or this head may be a polygon. However, it is necessary to adjust the torque for tightening the screw member 14 to adjust the amount of expansion of the outer diameter of the lid member so that the outer ring 1 is not distorted.
Further, the screw portion of the lid member 5 may be prevented from loosening such as Loctite, or an adhesive may be applied to the outer diameter of the lid member 5 or the rolling element insertion hole 4.

ターンテーブル等の旋回対象を支持する軸受として最適である。   It is optimal as a bearing that supports a turning object such as a turntable.

１ 外輪
２ 内輪
３ 転動体
４ 転動体挿入孔
５ 蓋部材
１３ ねじ孔
１４ ねじ部材
１５ 第１スリット
１６ 第２スリット DESCRIPTION OF SYMBOLS 1 Outer ring 2 Inner ring 3 Rolling element 4 Rolling element insertion hole 5 Lid member 13 Screw hole 14 Screw member 15 First slit 16 Second slit

Claims (3)

外輪に内輪を組み合わせ、これら外輪および内輪間に転動体を組み込むとともに、外輪あるいは内輪のいずれか一方に転動体挿入孔を形成し、この転動体挿入孔に蓋部材を挿入した軸受において、上記蓋部材にはねじ孔を形成するとともに、このねじ孔の軸線方向に沿った第１スリットを形成し、上記ねじ孔にねじ部材をねじ込んで第１スリットを押し開き、蓋部材の外径を拡大する構成にした軸受。   A bearing in which an inner ring is combined with an outer ring, a rolling element is incorporated between the outer ring and the inner ring, a rolling element insertion hole is formed in either the outer ring or the inner ring, and a lid member is inserted into the rolling element insertion hole. A screw hole is formed in the member, and a first slit is formed along the axial direction of the screw hole, and the screw member is screwed into the screw hole to push open the first slit, thereby expanding the outer diameter of the lid member. A structured bearing. 上記第１スリットが押し開かれて蓋部材の外径が拡大するときの拡大起点になる位置に、蓋部材の円周方向に伸びる第２スリットを形成した請求項１記載の軸受。   The bearing according to claim 1, wherein a second slit extending in a circumferential direction of the lid member is formed at a position that becomes an expansion starting point when the first slit is pushed open to increase the outer diameter of the lid member. 上記転動体をころにするとともに、これらころを互いにクロスさせてクロスローラ型にした請求項１または２記載の軸受。   The bearing according to claim 1 or 2, wherein the rolling elements are rollers, and the rollers are crossed into a cross roller type.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2623805A1 (en) 2012-02-06 2013-08-07 Nippon Thompson Co., Ltd. Cylindrical roller bearing with loose spacing bodies
FR3007474A1 (en) * 2013-06-24 2014-12-26 Ntn Snr Roulements BEARING RING.
FR3007475A1 (en) * 2013-06-24 2014-12-26 Ntn Snr Roulements CLUTCH SYSTEM FOR BEARING RING.
KR20190011202A (en) * 2017-07-24 2019-02-01 아사 덴시 고교 가부시키가이샤 Mounting device
WO2022113533A1 (en) * 2020-11-26 2022-06-02 日本装置開発株式会社 Rotation mechanism for x-ray examination device, x-ray examination device, and adjustment method for rotation mechanism for x-ray examination device
WO2023037675A1 (en) * 2021-09-09 2023-03-16 日本トムソン株式会社 Bearing

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JPH0374624A (en) * 1989-05-30 1991-03-29 Hilti Ag Expansion type anchor bolt made of synthetic material
JPH03100607U (en) * 1990-02-02 1991-10-21
JP2005180578A (en) * 2003-12-19 2005-07-07 Nippon Thompson Co Ltd Cross roller bearing with cap and its manufacturing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0374624A (en) * 1989-05-30 1991-03-29 Hilti Ag Expansion type anchor bolt made of synthetic material
JPH03100607U (en) * 1990-02-02 1991-10-21
JP2005180578A (en) * 2003-12-19 2005-07-07 Nippon Thompson Co Ltd Cross roller bearing with cap and its manufacturing method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2623805A1 (en) 2012-02-06 2013-08-07 Nippon Thompson Co., Ltd. Cylindrical roller bearing with loose spacing bodies
FR3007474A1 (en) * 2013-06-24 2014-12-26 Ntn Snr Roulements BEARING RING.
FR3007475A1 (en) * 2013-06-24 2014-12-26 Ntn Snr Roulements CLUTCH SYSTEM FOR BEARING RING.
EP2818744A1 (en) * 2013-06-24 2014-12-31 NTN-SNR Roulements Closure system for bearing ring
EP2818745A1 (en) * 2013-06-24 2014-12-31 NTN-SNR Roulements Bearing ring
KR20190011202A (en) * 2017-07-24 2019-02-01 아사 덴시 고교 가부시키가이샤 Mounting device
TWI765074B (en) * 2017-07-24 2022-05-21 日商麻電子工業股份有限公司 Mounting device
KR102573945B1 (en) * 2017-07-24 2023-09-01 아사 덴시 고교 가부시키가이샤 Mounting device
WO2022113533A1 (en) * 2020-11-26 2022-06-02 日本装置開発株式会社 Rotation mechanism for x-ray examination device, x-ray examination device, and adjustment method for rotation mechanism for x-ray examination device
JP2022084112A (en) * 2020-11-26 2022-06-07 日本装置開発株式会社 Rotary mechanism for x-ray inspection device, x-ray inspection device, and method for adjusting rotary mechanism for x-ray inspection device
WO2023037675A1 (en) * 2021-09-09 2023-03-16 日本トムソン株式会社 Bearing

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