JPH082495Y2 - Roller followers used in high magnetic field environment - Google Patents
Roller followers used in high magnetic field environmentInfo
- Publication number
- JPH082495Y2 JPH082495Y2 JP1990021707U JP2170790U JPH082495Y2 JP H082495 Y2 JPH082495 Y2 JP H082495Y2 JP 1990021707 U JP1990021707 U JP 1990021707U JP 2170790 U JP2170790 U JP 2170790U JP H082495 Y2 JPH082495 Y2 JP H082495Y2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- rolling
- magnetic field
- rolling wheel
- high magnetic
- 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.)
- Expired - Fee Related
Links
Landscapes
- Rolls And Other Rotary Bodies (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 この考案は、たとえば鋼管電縫溶接の押えに使用れる
ローラフォロアなど、高磁場環境下で使用されるグリー
ス潤滑のローラフォロアに関する。TECHNICAL FIELD The present invention relates to a grease-lubricated roller follower used in a high magnetic field environment, such as a roller follower used for pressing steel pipe electric resistance welding.
従来の技術 鋼管電縫溶接の押さえに使用されるローラフォロアは
グリース潤滑の転がり軸受と同様の構造を有し、従来の
ものは、固定輪、回転輪およびこれらの間の複数の転動
体が全て金属製であった。2. Description of the Related Art Roller followers used for holding steel pipe ERW welding have a structure similar to that of grease-lubricated rolling bearings.In the conventional type, fixed wheels, rotating wheels, and multiple rolling elements between them are all used. It was made of metal.
考案が解決しようとする課題 上記のような従来のローラフォロアでは、回転輪が金
属製であるため、溶接機による高磁場の誘導加熱によっ
て500〜600℃程度に昇温する。このため、グリースの寿
命が短く、軸受が回転不良になり、数時間での交換を余
儀なくされていた。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the conventional roller follower as described above, since the rotating ring is made of metal, the temperature is raised to about 500 to 600 ° C. by induction heating of a high magnetic field by a welding machine. For this reason, the grease has a short life, and the bearing has failed to rotate, so that the bearing must be replaced within several hours.
この考案の目的は、上記の問題を解決し、寿命の長い
高磁場環境下で使用されるローラフォロアを提供するこ
とにある。An object of the present invention is to solve the above problems and provide a roller follower used in a high magnetic field environment having a long life.
課題を解決するための手段 この考案によるローラフォロアは、外周が縦断面円弧
状の中高凸面であるとともに内周に凹みぞ状の軌道が形
成されたセラミック製転動輪と、この転動輪の内部にこ
れと同軸に配置されるとともに外周に軌道が形成された
セラミック製固定輪と、転動輪と固定輪の軌道間に配置
される複数のセラミック製転動体とを備え、グリース潤
滑されるものである。Means for Solving the Problems A roller follower according to the present invention comprises a ceramic rolling wheel whose outer circumference is a medium-high convex surface having an arcuate longitudinal section and a groove-shaped raceway formed on the inner circumference, and the inside of this rolling wheel. It is provided with a ceramic fixed wheel which is coaxially arranged with a raceway formed on the outer periphery thereof, and a plurality of ceramic rolling elements which are arranged between the races of the rolling wheel and the fixed wheel, and which is grease-lubricated. .
好ましくは、回転輪と転動輪の間隙が非磁性材料製の
密封板によって密封されている。Preferably, the gap between the rotating wheel and the rolling wheel is sealed by a sealing plate made of a non-magnetic material.
また、好ましくは固定輪が軸線方向に分割されて突合
わされた２つのセラミック製半体よりなり、これらの半
体の突合わせ面に形成されたみぞが合わされて、グリー
ス供給穴が形成されている。Further, preferably, the fixed ring is composed of two ceramic halves that are axially divided and abutted, and the grooves formed on the abutting surfaces of these halves are abutted to form a grease supply hole. .
作用 回転する転動輪および転動体がセラミック製であるか
ら、高磁場による誘導加熱がなくなり、温度上昇が小さ
くなる。このため、グリース寿命がのび、その結果、ロ
ーラフォロアの寿命ものびる。また、回転しない固定輪
もセラミック製であるから、交流磁場下でも誘導加熱が
なくなる。さらに、転動輪の外周が縦断面円弧状の中高
凸面であるから、内周の凹みぞ状の軌道の隅部を起点と
する転動衝撃による割損（亀裂破壊）が生じにくい。す
なわち、転動輪は脆性材料のセラミック製であるから、
転動輪の外周が円筒面であれば、転動体からの転動衝撃
により、内周の凹みぞ状の軌道の隅部に応力集中が生
じ、この部分を起点とする割損が生じやすい。これに対
し、この発明の場合、転動輪の外周が縦断面円弧状の中
高凸面であって軸線方向中央部の肉厚が大きくなってい
るので、転動衝撃による内周の凹みぞ状の軌道の隅部の
応力集中が生じにくく、これによる割損も生じにくい。
固定輪、転動輪および転動体がともにセラミック製の通
常の軸受の場合、無潤滑であっても焼付きが生じないの
で、グリース潤滑は行われない。これに対し、本願発明
のようなローラフォロアの場合は、転動衝撃を受ける
が、本願発明においては、固定輪、転動輪および転動体
がともにセラミック製であってもグリース潤滑を行うこ
とにより、転動体の転動面における転動衝撃が緩和さ
れ、セラミック製の転動輪、固定輪および転動体の割損
が防止される。Action Since the rotating rolling wheels and rolling elements are made of ceramic, induction heating due to a high magnetic field is eliminated, and the temperature rise is reduced. Therefore, the life of the grease is extended, and as a result, the life of the roller follower is extended. Further, since the stationary ring that does not rotate is also made of ceramic, induction heating is eliminated even under an alternating magnetic field. Further, since the outer circumference of the rolling wheel is a convex-convex surface having an arcuate longitudinal section, cracking (crack fracture) due to rolling impact originating from a corner of a grooved raceway on the inner circumference is unlikely to occur. That is, since the rolling wheels are made of brittle material ceramic,
If the outer circumference of the rolling wheel is a cylindrical surface, the rolling impact from the rolling element causes stress concentration at the corner of the groove-shaped raceway on the inner circumference, and cracking starting from this portion is likely to occur. On the other hand, in the case of the present invention, since the outer circumference of the rolling wheel is a medium-high convex surface having an arcuate longitudinal section and the wall thickness at the central portion in the axial direction is large, a groove-like raceway on the inner circumference due to rolling impact is formed. Stress concentration at the corners of the is not likely to occur, and cracking due to this is less likely to occur.
In the case of a normal bearing in which all the fixed wheels, the rolling wheels, and the rolling elements are made of ceramic, no seizure occurs even without lubrication, and thus grease lubrication is not performed. On the other hand, in the case of the roller follower as in the present invention, a rolling impact is received. However, in the present invention, even if the fixed ring, the rolling wheel and the rolling element are both made of ceramic, by grease lubrication, Rolling impact on the rolling surface of the rolling element is mitigated, and fractures of the ceramic rolling wheel, fixed wheel, and rolling element are prevented.
密封板を非磁性材料製にすれば、密封板の回転による
誘導加熱もなくなり、これによる温度上昇も小さくな
る。If the sealing plate is made of a non-magnetic material, induction heating due to the rotation of the sealing plate is also eliminated, and the temperature rise due to this is reduced.
軸方向に分割された２つのセラミック製半体を突合わ
せて、固定輪を構成し、これらの半体の突合わせ面に形
成されたみぞを合わせてグリース供給穴を形成するよう
にすれば、各半体の突合わせ面にみぞを形成するだけで
よいので、グリース穴形成によるセラミック製固定輪の
強度低下が小さくなる。If two ceramic halves that are divided in the axial direction are butted against each other to form a fixed ring, and the grooves formed on the butted surfaces of these halves are joined together to form the grease supply hole, Since it suffices to form a groove on the abutting surface of each half body, the reduction in strength of the ceramic fixed wheel due to the formation of the grease hole is reduced.
実施例 以下、図面を参照して、この考案の実施例を説明す
る。An embodiment of the present invention will be described below with reference to the drawings.
図面は鋼管電縫溶接の押えに使用されるローラフォロ
アの１例を示す。The drawing shows an example of a roller follower used for holding a steel pipe by electric resistance welding.
ローラフォロアは、軸受内輪に相当する固定輪（１）
と、軸受外輪に相当する転動輪（２）と、これらの間に
配置された複数のころ（転動体）（３）と、転動輪
（２）の両端部に取付けられたシールド板（密封板）
（４）とから構成されている。The roller follower is a fixed ring (1) corresponding to the inner ring of the bearing.
A rolling wheel (2) corresponding to the bearing outer ring, a plurality of rollers (rolling elements) (3) arranged between them, and a shield plate (sealing plate) attached to both ends of the rolling wheel (2). )
(4) and.
固定輪（１）は軸線方向に分割された２つの半体
（５）よりなり、さらに各半体（５）は軸線方向に分割
された軌道部（5a）と鍔部（5b）よりなる。２つの半体
（５）の軌道部（5a）と鍔部（5b）は、全てたとえば窒
化けい素（Si3N4）などのセラミック製である。そし
て、２つの半体（５）の軌道部（5a）の端面同志が突合
わされて固定され、これらの軌道部（5a）の両端面にそ
れぞれ鍔部（5b）が突合わされて固定されており、この
ように組立てられた固定輪（１）が転動輪（２）の内側
にこれと同軸に配置されている。２つの軌道部（5a）と
その両端の２つの鍔部（5b）により、固定輪（１）の外
周に凹みぞ状の軌道（９）が形成されている。また、２
つの軌道部（5a）の突合わせ面に半径の大きい円弧状の
浅いみぞ（６）が形成され、これらが合わされて長円状
のグリース穴（７）が形成されている。このグリース穴
（７）は、負荷圏以外の部分に形成される。The stationary ring (1) is composed of two halves (5) divided in the axial direction, and each half (5) is further composed of an orbital portion (5a) and a collar portion (5b) which are divided in the axial direction. The orbit portion (5a) and the collar portion (5b) of the two halves (5) are all made of ceramic such as silicon nitride (Si 3 N 4 ). The end faces of the track parts (5a) of the two halves (5) are butted against each other and fixed, and the flange parts (5b) are butted and fixed to both end faces of these track parts (5a), respectively. The fixed wheel (1) thus assembled is arranged inside the rolling wheel (2) coaxially therewith. The two raceway portions (5a) and the two flange portions (5b) at both ends thereof form a grooved raceway (9) on the outer periphery of the fixed ring (1). Also, 2
An arcuate shallow groove (6) having a large radius is formed on the abutting surface of one of the track portions (5a), and these are combined to form an oval grease hole (7). The grease hole (7) is formed in a portion other than the load zone.
転動輪（２）はたとえば窒化けい素などのセラミック
で一体に形成されており、その外周に縦断面円弧状の中
高の転動凸面（８）が形成されている。また、転動輪
（２）の内周に、凹みぞ状の軌道（10）が形成されてい
る。The rolling wheel (2) is integrally formed of, for example, ceramic such as silicon nitride, and a rolling convex surface (8) having a circular arc shape in vertical section and having a middle height is formed on the outer periphery thereof. Further, a groove-shaped raceway (10) is formed on the inner circumference of the rolling wheel (2).
ころ（３）は、たとえば窒化けい素などのセラミック
製であり、固定輪（１）の２つの半体（５）の軌道部
（5a）に対応して、固定輪（１）と転動輪（２）の軌道
（９）（10）間に、軸方向に２列に配置され、円周方向
に等間隔をおいて配置されている。The rollers (3) are made of ceramics such as silicon nitride, and correspond to the raceways (5a) of the two halves (5) of the fixed ring (1) and the fixed ring (1) and the rolling wheels (3). Between the tracks (9) and (10) of 2), they are arranged in two rows in the axial direction and are arranged at equal intervals in the circumferential direction.
シールド板（４）は、たとえばポリアミド樹脂などの
非磁性材料よりなり、転動輪（２）の両端部内周に固定
されている。The shield plate (4) is made of, for example, a non-magnetic material such as polyamide resin, and is fixed to the inner circumference of both ends of the rolling wheel (2).
上記のローラフォロアの固定輪（１）は図面しない軸
などに固定され、転動輪（２）とシールド板（４）が一
体となって回転するとともに、固定輪（１）と転動輪
（２）の間をころ（３）が転動する 回転する転動輪（２）およびころ（３）がセラミック
製であり、シールド板（４）が合成樹脂などの非磁性材
料製であるから、高磁場環境下で使用されても、誘導加
熱が生じない。このため、温度上昇は小さく、温度はた
とえば100℃以下になる。このため、グリース寿命がの
び、その結果、ローラフォロアの寿命ものびる。The fixed wheel (1) of the roller follower is fixed to a shaft (not shown), the rolling wheel (2) and the shield plate (4) rotate together, and the fixed wheel (1) and the rolling wheel (2) rotate together. The roller (3) rolls between the rotating rolling wheel (2) and the roller (3) made of ceramic, and the shield plate (4) made of a non-magnetic material such as synthetic resin. No induction heating occurs when used below. Therefore, the temperature rise is small, and the temperature is, for example, 100 ° C. or lower. Therefore, the life of the grease is extended, and as a result, the life of the roller follower is extended.
回転しない固定輪（１）もセラミック製であるので、
全体が軽量になり、また、交流高磁場環境下で使用され
る場合でも、誘導加熱が生じない。そして、軸方向に分
割された２つのセラミック製半体（５）が突合わされ
て、これらの半体（５）の突合わせ面に形成された浅く
て半径の大きい円弧状のみぞ（６）が合わせられてグリ
ース供給穴（７）が形成されているので、各半体（５）
の突合わせ面にみぞを形成するだけでよく、固定輪
（１）がセラミック製であっても、グリース穴（７）形
成による強度低下が小さく、割れなどの発生のおそれが
少ない。Since the stationary ring (1) that does not rotate is also made of ceramic,
The whole is light in weight, and induction heating does not occur even when used in an AC high magnetic field environment. Then, the two ceramic halves (5) divided in the axial direction are butted against each other, and the shallow, large-radius arc-shaped groove (6) formed at the abutting surface of these halves (5). Since the grease supply holes (7) are formed by combining them, each half body (5)
It is only necessary to form a groove on the butting surface, and even if the fixed ring (1) is made of ceramic, the decrease in strength due to the formation of the grease hole (7) is small, and the possibility of cracking is small.
考案の効果 この考案のローラフォロアによれば、上述のように、
直流高磁場環境下はもちろん、交流高磁場環境下で使用
されても、誘導加熱がなくなり、温度上昇が小さく、し
たがって、グリース寿命がのび、ローラフォロアの寿命
ものびる。しかも、セラミック製の固定輪、転動輪およ
び転動体に割損が生じるおそれが少なく、この点からも
ローラフォロアの寿命がのびる。Effect of the Invention According to the roller follower of the present invention, as described above,
When used not only in a DC high magnetic field environment, but also in an AC high magnetic field environment, induction heating is eliminated, and the temperature rise is small, so the grease life and the roller follower life are extended. Moreover, there is little risk that the ceramic fixed wheel, rolling wheel, and rolling element will be broken, which also extends the life of the roller follower.
また、密封板の非磁性材料製にすることにより、密封
板の回転による誘導加熱もなくなり、これによる温度上
昇も小さくなる。Further, since the sealing plate is made of a non-magnetic material, induction heating due to the rotation of the sealing plate is also eliminated, and the temperature rise due to this is reduced.
軸方向に分割された２つのセラミック製半体を突合わ
せて、固定輪を構成し、これらの半体の突合わせ面に形
成されたみぞを合わせてグリース供給穴を形成するよう
にすることにより、グリース穴形成によるセラミック製
固定輪の強度低下が小さくなる。By abutting two ceramic halves that are divided in the axial direction to form a fixed ring, and by combining the grooves formed on the abutting surfaces of these halves to form a grease supply hole The decrease in strength of the ceramic fixed ring due to the formation of grease holes is reduced.
図面は、この考案の実施例を示すローラフォロアの縦断
面図である。 （１）……固定輪、（２）……転動輪、（３）……ころ
（転動体）、（４）……シールド板（密封板）、（５）
……半体、（６）……みぞ、（７）……グリース穴、
（８）……転動凸面、（９）（10）……軌道。The drawing is a longitudinal sectional view of a roller follower showing an embodiment of the present invention. (1) …… Fixed wheel, (2) …… Rolling wheel, (3) …… Roller (rolling element), (4) …… Shield plate (sealing plate), (5)
…… Half, (6) …… Groove, (7) …… Grease hole,
(8) …… Rolling convex surface, (9) (10) …… Orbit.
Claims (3)
に内周に凹みぞ状の軌道が形成されたセラミック製転動
輪と、この転動輪の内部にこれと同軸に配置されるとと
もに外周に軌道が形成されたセラミック製固定輪と、転
動輪と固定輪の軌道間に配置される複数のセラミック製
転動体とを備え、グリース潤滑される高磁場環境下で使
用されるローラフォロア。Claim: What is claimed is: 1. A ceramic rolling wheel, the outer circumference of which is a medium-high convex surface having an arcuate longitudinal section, and a groove-shaped raceway formed on the inner circumference, and the inner circumference of which is coaxial with the rolling wheel. A roller follower which is provided with a ceramic fixed ring having a raceway formed therein and a plurality of ceramic rolling elements arranged between the races of the rolling wheel and the fixed ring, and which is used in a high magnetic field environment where grease is lubricated.
封板によって密封されている請求項１の高磁場環境下で
使用されるローラフォロア。2. The roller follower used in a high magnetic field environment according to claim 1, wherein a gap between the rolling wheel and the fixed wheel is sealed by a sealing plate made of a non-magnetic material.
た２つのセラミック製半体よりなり、これらの半体の突
合わせ面に形成されたみぞが合わされて、グリース供給
穴が形成されている請求項１の高磁場環境下で使用され
るローラフォロア。3. A fixed ring is composed of two ceramic halves that are axially divided and abutted, and the grooves formed on the abutting surfaces of these halves are abutted to form a grease supply hole. The roller follower used in the high magnetic field environment according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990021707U JPH082495Y2 (en) | 1990-03-02 | 1990-03-02 | Roller followers used in high magnetic field environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990021707U JPH082495Y2 (en) | 1990-03-02 | 1990-03-02 | Roller followers used in high magnetic field environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03112118U JPH03112118U (en) | 1991-11-15 |
| JPH082495Y2 true JPH082495Y2 (en) | 1996-01-29 |
Family
ID=31524741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990021707U Expired - Fee Related JPH082495Y2 (en) | 1990-03-02 | 1990-03-02 | Roller followers used in high magnetic field environment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH082495Y2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5078845U (en) * | 1973-11-22 | 1975-07-08 | ||
| JPS60205018A (en) * | 1984-03-28 | 1985-10-16 | Agency Of Ind Science & Technol | Roller bearing device of magnetic fluid seal type |
| JPS61109974A (en) * | 1984-10-31 | 1986-05-28 | Saginomiya Seisakusho Inc | Manufacture of four-way reversing valve |
| JPS6310421U (en) * | 1986-07-09 | 1988-01-23 |
-
1990
- 1990-03-02 JP JP1990021707U patent/JPH082495Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03112118U (en) | 1991-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0814284B2 (en) | Ceramic bearing | |
| JP2002508485A (en) | Angular contact bearing unit with a single inner bearing element | |
| US4865472A (en) | Double row roller bearing | |
| US4252386A (en) | Journal bearing with axially split bearing rings | |
| JPS6449718A (en) | Mounting device for bearing | |
| JPH082495Y2 (en) | Roller followers used in high magnetic field environment | |
| US5470159A (en) | Cage guide for rolling bearings, in particular for axial cylindrical roller bearings | |
| KR930702626A (en) | Gamma roller bearing | |
| US3733109A (en) | Rolling bearing, e.g. taper roller bearing | |
| US1338939A (en) | Roller-bearing | |
| US5099559A (en) | Roller assembly with relative tolerance mountings | |
| US2664325A (en) | Floating type roller bearing | |
| US2189615A (en) | Roller bearing arrangement | |
| US7712968B2 (en) | Compound roller bearing | |
| US5284395A (en) | Proportionally dimensioned roller bearing | |
| EP0158206B1 (en) | A ball bearing | |
| US3980354A (en) | Welded-together roller bearing | |
| US5893801A (en) | Segmented cross groove plunging constant velocity joint | |
| CN110966301A (en) | Novel high-speed rail power bearing | |
| JP2522238Y2 (en) | 4-point contact ball bearing | |
| JPS62278314A (en) | Divided type rolling bearing built up structure with seal unit | |
| JPS633463Y2 (en) | ||
| US11965546B2 (en) | Bearing module for coaxial shaft ends | |
| US1799447A (en) | Split roller bearing | |
| WO2022270295A1 (en) | Bearing device and electric motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |