JP2003172344A - Cross roller bearing - Google Patents
Cross roller bearingInfo
- Publication number
- JP2003172344A JP2003172344A JP2001374152A JP2001374152A JP2003172344A JP 2003172344 A JP2003172344 A JP 2003172344A JP 2001374152 A JP2001374152 A JP 2001374152A JP 2001374152 A JP2001374152 A JP 2001374152A JP 2003172344 A JP2003172344 A JP 2003172344A
- Authority
- JP
- Japan
- Prior art keywords
- rollers
- roller
- roller bearing
- cross roller
- sphere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- F16C19/36—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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はクロスローラベアリ
ングに関し、さらに詳しくは、コロ間を一定に保持する
ためのリテーナを備えていないクロスローラベアリング
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross roller bearing, and more particularly to a cross roller bearing that does not have a retainer for holding the rollers at constant intervals.
【０００２】[0002]
【従来の技術】クロスローラベアリングは公知のよう
に、外輪と内輪の間に形成されている円環状の軌道部分
に回転軸が交互に直交するように多数個のコロを挿入し
た構成となっている。各コロの間隔を一定に保持するた
めに一般にリテーナが取り付けられているが、リテーナ
を用いない所謂、総コロクロスローラベアリングも知ら
れている。2. Description of the Related Art As is well known, a cross roller bearing has a structure in which a large number of rollers are inserted in an annular raceway portion formed between an outer ring and an inner ring so that their rotation axes are alternately orthogonal to each other. There is. A retainer is generally attached in order to keep the distance between the rollers constant, but a so-called total roller cross roller bearing that does not use the retainer is also known.
【０００３】この総コロクロスローラベアリングを設計
する場合には、コロの軌道径（ＰＣＤ）が予め決まって
いる場合が多い。このために、例えば、在庫のコロを用
いて設計すると、在庫のコロの寸法によってはコロ隙間
が大きすぎることがある。When designing the total roller cross roller bearing, the roller track diameter (PCD) is often predetermined. For this reason, for example, when designing with stock rollers, the roller gap may be too large depending on the size of the stock rollers.
【０００４】特に、クロスローラベアリングの場合に
は、隣接するコロはそれらの回転軸が相互に直交する状
態とする必要があるので、必ず偶数個のコロを軌道部分
に挿入する必要がある。このようにコロ個数が偶数個に
限定されているので、コロ隙間の調整がしづらい。Particularly, in the case of a cross roller bearing, since the rotation axes of adjacent rollers need to be orthogonal to each other, it is necessary to insert an even number of rollers in the track portion. Since the number of rollers is limited to an even number, it is difficult to adjust the roller gap.
【０００５】[0005]
【発明が解決しようとする課題】ここで、コロ間隔を一
定に保持するためのリテーナが無いので、コロ隙間が必
要以上に大きいと、隙間が詰まり過ぎたコロ配列部分
と、隙間が過剰に広がったコロ配列部分ができるなど、
コロ隙間に偏りが発生してしまい、ベアリング性能が低
下するおそれがある。Here, since there is no retainer for keeping the roller gap constant, if the roller gap is unnecessarily large, the roller array portion where the gap is too clogged and the gap excessively widens. It has a roller array part, etc.
There is a risk that the roller gap will be biased and the bearing performance will deteriorate.
【０００６】本発明の課題は、この点に鑑みて、リテー
ナを用いることなくコロ隙間の偏りを防止可能なクロス
ローラベアリングを提案することにある。In view of this point, an object of the present invention is to propose a cross roller bearing capable of preventing the deviation of the roller gap without using a retainer.
【０００７】また、本発明の課題は、奇数個のコロを備
えたクロスローラベアリングを提案することにある。Another object of the present invention is to propose a cross roller bearing having an odd number of rollers.
【０００８】[0008]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明のクロスローラベアリングは、外輪と、内
輪と、これらの間に形成されている円環状の軌道部分に
回転軸が交互に直交する状態で配列された複数個のコロ
と、これらコロの円周方向の隙間を調整するために前記
コロの間に挿入した少なくとも１個の球体とを有してい
る。In order to solve the above-mentioned problems, the cross roller bearing of the present invention has an outer ring, an inner ring, and an annular raceway portion formed therebetween, in which rotating shafts alternate. A plurality of rollers arranged in a state of being orthogonal to each other, and at least one sphere inserted between the rollers for adjusting a circumferential gap between the rollers.
【０００９】軌道部分に球体を挿入することにより、コ
ロ間の隙間を適切な状態となるように調整することがで
き、隙間の偏り発生を防止できる。By inserting the sphere into the track portion, it is possible to adjust the gap between the rollers to an appropriate state and prevent the gap from being biased.
【００１０】ここで、前記球体の直径寸法を前記コロの
外径寸法と同一とすることもできるが、前記球体の直径
寸法を前記コロの外径寸法より小さくしてもよい。この
ようにすれば、隙間調整の自由度が増すので好ましい。
また、前記球体として一般に鋼球を使用すればよい。Here, the diameter of the sphere may be the same as the outer diameter of the roller, but the diameter of the sphere may be smaller than the outer diameter of the roller. This is preferable because the degree of freedom in adjusting the gap is increased.
Further, a steel ball may be generally used as the sphere.
【００１１】次に、本発明のクロスローラベアリングで
は奇数個のコロを挿入した場合に、回転軸が同一方向に
向いた状態で隣接しているコロ間に球体を挿入すればよ
い。換言すると、奇数個のコロを備えたクロスローラベ
アリングを実現できる。Next, in the cross roller bearing of the present invention, when an odd number of rollers are inserted, the spheres may be inserted between the rollers adjacent to each other with their rotation axes oriented in the same direction. In other words, a cross roller bearing having an odd number of rollers can be realized.
【００１２】[0012]
【発明の実施の形態】以下に、図面を参照して、本発明
を適用したクロスローラベアリングの実施例を説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a cross roller bearing to which the present invention is applied will be described below with reference to the drawings.
【００１３】図１は本例のクロスローラベアリングを示
す側面構成図である。この図に示すように、本例のクロ
スローラベアリング１は、円環状の外輪２と、この内側
に同心状に配置されている円環状の内輪３と、これら外
輪２および内輪３の間に形成されている円環状の軌道部
分４と、この軌道部分４に挿入されている複数個の円柱
状のコロ５を備えている。FIG. 1 is a side view showing the cross roller bearing of this embodiment. As shown in this figure, a cross roller bearing 1 of this example is formed between an outer ring 2 having an annular shape, an inner ring 3 having an annular shape arranged concentrically inside the outer ring 2, and between the outer ring 2 and the inner ring 3. It has a circular ring-shaped track portion 4 and a plurality of cylindrical rollers 5 inserted in the track portion 4.
【００１４】円柱状のコロ５はその外径寸法および高さ
がほぼ同一であり、軌道部分４内にそれらの回転軸５ａ
を中心として転動自在に挿入されている。また、隣接す
るコロ５はそれらの回転軸５ａが相互に直交する状態で
配列されている。The cylindrical rollers 5 have substantially the same outer diameter dimension and height, and their rotating shafts 5a are arranged in the track portion 4.
It is inserted so that it can roll around. Further, the adjacent rollers 5 are arranged such that their rotation axes 5a are orthogonal to each other.
【００１５】ここで、本例では４８個のコロ５が軌道部
分４に挿入されており、これらを軌道部分４に隙間の無
い状態で挿入すると、図に示すように最初に挿入したコ
ロ５（１）と最後に挿入したコロ５（４８）の間に１個
のコロよりも大きな隙間Δができる。本例では、この隙
間Δに、コロ５と同一の直径の鋼球６が１個挿入されて
いる。鋼球６を挿入することにより、コロ５として適切
な隙間を形成可能な寸法のものを用意することなく、在
庫のコロを用いてクロスローラベアリング１を製造でき
る。よって、設計の自由度が増すという利点がある。In this example, forty-eight rollers 5 are inserted in the track portion 4, and when these rollers 5 are inserted in the track portion 4 without any gap, the first inserted roller 5 ( A gap Δ larger than one roller is formed between 1) and the roller 5 (48) inserted last. In this example, one steel ball 6 having the same diameter as the roller 5 is inserted into the gap Δ. By inserting the steel ball 6, it is possible to manufacture the cross roller bearing 1 by using the stock roller without preparing the roller 5 having a size capable of forming an appropriate gap. Therefore, there is an advantage that the degree of freedom in design is increased.
【００１６】また、鋼球はコロを隙間調整用のスペーサ
として用いる場合に発生するスキューなどが起き難いと
いう有利な点もある。また、コロに比べて各種寸法のも
のを入手し易いという有利な点もある。[0016] Further, the steel ball has an advantage that a skew or the like which occurs when the roller is used as a spacer for adjusting a clearance is hard to occur. Further, there is an advantage that various sizes are easily available as compared with the roller.
【００１７】なお、挿入する鋼球６の個数は隙間Δに応
じて、１個あるいは複数個とすればよい。The number of steel balls 6 to be inserted may be one or more depending on the gap Δ.
【００１８】また、鋼球６として、コロ５よりも僅かに
小径のものを用意しておけば、隙間Δの広狭に対して、
より柔軟に対応できるので望ましい。If a steel ball 6 having a diameter slightly smaller than that of the roller 5 is prepared, the gap Δ can be widened and narrowed.
It is desirable because it can respond more flexibly.
【００１９】さらに、隙間Δに挿入する球体としては鋼
球の代わりにセラミックス製のものやその他の素材のも
のを用いることも可能である。Further, as the spherical body to be inserted into the gap Δ, it is possible to use a ceramic or other material instead of the steel ball.
【００２０】次に、本例のクロスローラベアリング１で
は、従来の総コロクロスローラベアリングと同様に偶数
個のコロ５を用いているが、隙間調整用の球体を用いる
ことにより、奇数個のコロを用いてクロスローラベアリ
ングを製造することも可能になる。Next, in the cross roller bearing 1 of this embodiment, an even number of rollers 5 are used as in the conventional total roller cross roller bearing, but an odd number of rollers 5 is used by using a sphere for adjusting the clearance. It is also possible to manufacture cross roller bearings using.
【００２１】図２（ａ）に示すように、上記のクロスロ
ーラベアリング１では、隣接するコロ５はそれらの回転
軸５ａが直交状態になっている。これに対して、奇数個
のコロを用いた場合、例えば４７個のコロ５を用いた場
合には、図２（ｂ）に示すように、最初に軌道部分４に
挿入したコロ５（１）と最後に挿入したコロ５（４７）
は、共に同一方向に回転軸５ａが延びる状態で隣接して
しまう。しかしながら、本発明を適用すれば、これらの
間に間隔調整用の球体６Ａ（上記の例では球体６）が挿
入されるので、ベアリング性能が低下してしまうなどの
弊害を回避できる。As shown in FIG. 2 (a), in the above-mentioned cross roller bearing 1, the rotating shafts 5a of the adjacent rollers 5 are orthogonal to each other. On the other hand, when using an odd number of rollers, for example, 47 rollers 5, as shown in FIG. 2B, the roller 5 (1) first inserted into the track portion 4 is used. And the last inserted roller 5 (47)
Are adjacent to each other with the rotary shafts 5a extending in the same direction. However, if the present invention is applied, since the sphere 6A for adjusting the space (the sphere 6 in the above example) is inserted between them, it is possible to avoid the adverse effects such as deterioration of the bearing performance.
【００２２】[0022]
【発明の効果】以上説明したように、本発明のクロスロ
ーラベアリングにおいては、コロの間に球体を挿入して
コロ間隔を調整するようにしている。従って、軌道径に
対して最適な寸法のコロを用いなくても、コロ隙間を球
体により調整して適切なコロ隙間を確保できる。As described above, in the cross roller bearing of the present invention, the sphere is inserted between the rollers to adjust the distance between the rollers. Therefore, it is possible to secure an appropriate roller gap by adjusting the roller gap with the sphere without using a roller having an optimum size for the track diameter.
【００２３】また、間隔調整用の球体をコロ間に挿入す
ることにより、ベアリング性能の低下を招くことなく、
奇数個のコロを備えたクロスローラベアリングを製造す
ることが可能になる。Further, by inserting a sphere for adjusting the space between the rollers, the bearing performance is not deteriorated.
It is possible to manufacture a cross roller bearing with an odd number of rollers.
【図１】本発明を適用したクロスローラベアリングを示
す側面構成図である。FIG. 1 is a side view showing a cross roller bearing to which the present invention is applied.
【図２】（ａ）は図１のクロスローラベアリングにおけ
る間隔調整用の鋼球が挿入されている部分を示す説明図
であり、（ｂ）は奇数個のコロを用いた場合における間
隔調整用の球体を挿入することにより効果を示すための
説明図である。FIG. 2A is an explanatory view showing a portion in which a steel ball for spacing adjustment is inserted in the cross roller bearing of FIG. 1, and FIG. 2B is a spacing adjustment when an odd number of rollers are used. It is an explanatory view for showing an effect by inserting the sphere.
１ クロスローラベアリング ２ 外輪 ３ 内輪 ４ 軌道部分 ５ コロ ５ コロ回転軸 ６ 間隔調整用の鋼球 ６Ａ 間隔調整用の球体 Δ 隙間 1 Crossed roller bearing 2 outer ring 3 inner ring 4 Orbital part 5 roller 5 roller rotation axis 6 Steel balls for spacing adjustment 6A Sphere for space adjustment Δ gap
Claims (5)
ている円環状の軌道部分に回転軸が交互に直交する状態
で配列された複数個のコロと、これらのコロの円周方向
の隙間を調整するために前記コロの間に挿入した少なく
とも１個の球体とを有するクロスローラベアリング。1. An outer ring, an inner ring, a plurality of rollers arranged in a circular orbital portion formed between them with their axes of rotation alternately orthogonal to each other, and a circumferential direction of these rollers. A cross roller bearing having at least one sphere inserted between the rollers to adjust the gap between the rollers.
徴とするクロスローラベアリング。2. The cross roller bearing according to claim 1, wherein the diameter of the sphere is the same as the outer diameter of the roller.
とするクロスローラベアリング。3. The cross roller bearing according to claim 1, wherein the diameter of the sphere is smaller than the outer diameter of the roller.
アリング。4. The cross roller bearing according to claim 1, 2 or 3, wherein the sphere is a steel ball.
間に前記球体が挿入されていることを特徴とするクロス
ローラベアリング。5. The number according to claim 1, 2, 3 or 4, wherein the number of the rollers is an odd number, and the sphere is inserted between the rollers that are adjacent to each other with their axes of rotation facing the same direction. A cross roller bearing characterized in that
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001374152A JP2003172344A (en) | 2001-12-07 | 2001-12-07 | Cross roller bearing |
| DE2002157195 DE10257195B4 (en) | 2001-12-07 | 2002-12-06 | Crossed roller bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001374152A JP2003172344A (en) | 2001-12-07 | 2001-12-07 | Cross roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003172344A true JP2003172344A (en) | 2003-06-20 |
Family
ID=19182757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001374152A Pending JP2003172344A (en) | 2001-12-07 | 2001-12-07 | Cross roller bearing |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003172344A (en) |
| DE (1) | DE10257195B4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101568735B (en) | 2006-12-18 | 2012-02-01 | 维斯塔斯风力系统有限公司 | A bearing and method for transferring forces through a bearing of a wind turbine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE72482C (en) * | F. PURDON und H. E. WALTERS in Westminster, Middlesex, England | Support trunnion bearings with rolling support cones | ||
| CH42370A (en) * | 1908-01-06 | 1909-01-16 | Robert Tillberg Knut Henning | Roller bearings |
| FR1083678A (en) * | 1953-05-15 | 1955-01-11 | Double single row combination ball bearing ga? Ts | |
| JPH0668289B2 (en) * | 1987-12-23 | 1994-08-31 | 日本トムソン株式会社 | Cross roller bearing spacer |
| WO1990015936A1 (en) * | 1989-06-20 | 1990-12-27 | Massachusetts Institute Of Technology | Multi-element bearings |
-
2001
- 2001-12-07 JP JP2001374152A patent/JP2003172344A/en active Pending
-
2002
- 2002-12-06 DE DE2002157195 patent/DE10257195B4/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE10257195A1 (en) | 2003-06-18 |
| DE10257195B4 (en) | 2010-12-02 |
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