JPH0193615A - Bearing structure - Google Patents
Bearing structureInfo
- Publication number
- JPH0193615A JPH0193615A JP62251786A JP25178687A JPH0193615A JP H0193615 A JPH0193615 A JP H0193615A JP 62251786 A JP62251786 A JP 62251786A JP 25178687 A JP25178687 A JP 25178687A JP H0193615 A JPH0193615 A JP H0193615A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- cylinder
- ceramics
- born
- rotating shaft
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000007747 plating Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
- F16C27/063—Sliding contact bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Support Of The Bearing (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は軸受構造に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a bearing structure.
従来の軸受構造は、軸受の軸受面、回転軸の被軸受面が
金属で、あるので、軸受には、回転軸との摩擦の低減、
回転軸との焼付きを防止するために、回転軸との間に潤
滑油を供給する潤滑油供給装置が付帯されている。In conventional bearing structures, the bearing surface of the bearing and the bearing surface of the rotating shaft are made of metal.
In order to prevent seizure with the rotating shaft, a lubricating oil supply device is attached to supply lubricating oil between the rotating shaft and the rotating shaft.
また、農作機械や土木機械等に用いられる軸受には、潤
滑油の漏出防止、摩耗や損傷を生じさせる土砂等の侵入
防止のためのシール装置が付帯されている。Further, bearings used in agricultural machinery, civil engineering machinery, etc. are equipped with sealing devices to prevent leakage of lubricating oil and intrusion of earth and sand that can cause wear and damage.
しかし、このような従来の軸受は、潤滑油供給装置や、
シール装置によって、軸受機能の向上および維持を可能
にすることができる反面、構造が複雑となり、これに伴
って構造が大型になったり、重いものになったりしてい
る。However, such conventional bearings require a lubricating oil supply device,
Although the sealing device can improve and maintain the bearing function, it complicates the structure, and as a result, the structure becomes larger and heavier.
また、潤滑油供給装置のみを付帯した軸受にあっては、
潤滑油が外部に漏出して環境を汚染する懸念がある。In addition, for bearings equipped with only a lubricating oil supply device,
There is a concern that lubricating oil may leak outside and pollute the environment.
本発明は上記問題点を解決するための軸受構造を提供す
るものである。The present invention provides a bearing structure for solving the above problems.
〔問題点を解決するための手段および作用〕本発明の軸
受構造は、金属筒体内側に緩衝層を介してセラミックス
からなる軸受筒体が接合されている軸受部材と、
回転軸の外側に緩衝層を介して接合されているセラミッ
クスからなる被軸受筒体とが摺接関係にあることを特徴
とするものである。[Means and effects for solving the problems] The bearing structure of the present invention comprises a bearing member in which a bearing cylinder made of ceramics is bonded to the inside of the metal cylinder through a buffer layer, and a buffer on the outside of the rotating shaft. It is characterized in that it is in sliding contact with a bearing cylinder body made of ceramics that is bonded through layers.
本発明の軸受構造は、軸受と回転軸との摺接部つまり軸
受筒体、被軸受筒体が共にセラミックスとなっているの
で、摩擦係数が小さく、かつ耐摩耗性にすぐれている。In the bearing structure of the present invention, since the sliding contact portion between the bearing and the rotating shaft, that is, the bearing cylinder and the bearing cylinder are both made of ceramic, the coefficient of friction is small and the wear resistance is excellent.
但し、セラミック同士の組合わせの中で、同材質、同一
レベルの硬度をもったもの同士を摺接させると、双方の
摺接面が同時に損傷し、あるいは摩耗が激しく、摺動抵
抗も大きいなど、良好な摺動特性が得られないことがわ
かっているので、このような組合わせは除外する。However, among the combinations of ceramics, if they are made of the same material and have the same level of hardness and are brought into sliding contact, both sliding surfaces will be damaged at the same time, or they will be severely worn and the sliding resistance will be large. Since it is known that good sliding characteristics cannot be obtained, such combinations are excluded.
また、軸受構造に振動や衝撃が加わって、軸受筒体と被
軸受筒体とが衝突状態になっても、軸受側、回転軸側に
設けられた緩衝層によって、衝突力がやわらげられる。Further, even if vibration or shock is applied to the bearing structure and the bearing cylinder body and the bearing cylinder body collide, the collision force is softened by the buffer layers provided on the bearing side and the rotating shaft side.
そのため、硬いがもろい特性のあるセラミックスからな
る軸受筒体、被軸受筒体に損傷を生じることはない。Therefore, no damage is caused to the bearing cylinder and the bearing cylinder, which are made of hard but brittle ceramics.
以下、本発明の一実施例を図面に基づいて説明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
この実施例は、ラジアル軸受と、これに軸支される回転
軸との軸受構造に本発明を適用したものである。In this embodiment, the present invention is applied to a bearing structure of a radial bearing and a rotating shaft supported by the radial bearing.
第１図は軸受構造を示し、図中（１０）はラジアル軸受
であり、（２０）は回転軸である。FIG. 1 shows a bearing structure, in which (10) is a radial bearing, and (20) is a rotating shaft.
ラジアル軸受（１０）は、軸受本体（１））の内周面に
、軸受部材（３０）を固定状態に取付けである。この軸
受部材（３０）は、筒状のものであり、外側から内側に
向けて、金属筒体（４０）、緩衝層（５０）、セラミッ
クスからなる軸受筒体（６０）をこの記載順に接合しで
ある。The radial bearing (10) has a bearing member (30) fixedly attached to the inner peripheral surface of the bearing body (1). This bearing member (30) is cylindrical, and a metal cylinder (40), a buffer layer (50), and a bearing cylinder (60) made of ceramics are joined in this order from the outside to the inside. It is.
金属筒体（４０）の内周面には、ニッケルまたは銅等の
金属めっき層（５１）が施されである。そのめっき厚さ
は、０．１〜０．３日程度の厚肉なものが好ましい。A metal plating layer (51) of nickel, copper, or the like is applied to the inner peripheral surface of the metal cylinder (40). The plating thickness is preferably about 0.1 to 0.3 days.
金属筒体（４０）の内周両端部には、外方に向けて漸次
に拡径する段差部（４０）が形成されており、この段差
部（４０）と軸受筒体（６０）との間に、この隙間形状
の緩衝部材（５２） （５２）が嵌め込まれている。A stepped portion (40) whose diameter gradually increases outward is formed at both ends of the inner circumference of the metal cylinder (40), and the difference between this stepped portion (40) and the bearing cylinder (60) is The gap-shaped buffer members (52) (52) are fitted in between.
この緩衝部材（５２） （５２）は、銅等からなり、リ
ング状に形成したものである。This buffer member (52) (52) is made of copper or the like and is formed into a ring shape.
緩衝層（５０）は、金属筒体（４０）と軸受筒体（６０
）との間に介在する金属めっき層（５１）、緩衝部材（
５２）（５２）によって構成される。The buffer layer (50) includes a metal cylinder (40) and a bearing cylinder (60).
), the metal plating layer (51) interposed between the buffer member (
52) (52).
金属筒体（４０）と軸受筒体（６０）とは焼ばめによっ
て接合されており、緩衝部材（５２） （５２）は、金
属筒体（４０）の段差部（４０）と軸受筒体（６０）と
の隙間に圧入して嵌め込れまている。The metal cylindrical body (40) and the bearing cylindrical body (60) are joined by shrink fit, and the buffer member (52) (52) is connected to the step portion (40) of the metal cylindrical body (40) and the bearing cylindrical body. (60) and is press-fitted into the gap.
一方、回転軸（２０）には、前記軸受（ｌＯ）の軸受部
材（３０）と摺接関係にある被軸受筒体（７０）が、緩
衝層（８０）を介して外嵌固定されている。On the other hand, a bearing cylinder (70) in sliding contact with the bearing member (30) of the bearing (lO) is externally fitted and fixed to the rotating shaft (20) via a buffer layer (80). .
被軸受筒体（７０）は、軸受筒体（６０）と異種あるい
は硬度の異なるセラミックスによって形成されている。The bearing cylindrical body (70) is formed of a ceramic material different from that of the bearing cylindrical body (60) or having a different hardness.
緩衝Ｍ （８０）は、回転軸（２０）の外周面に、前記
軸受（１０）の緩衝層（５０）と同様なニッケルまたは
銅等の金属めっき層を施して形成されたものである。The buffer M (80) is formed by applying a metal plating layer of nickel, copper, or the like similar to the buffer layer (50) of the bearing (10) to the outer peripheral surface of the rotating shaft (20).
回転軸（２０）と被軸受筒体（７０）とは焼ばめによっ
て接合されである。The rotating shaft (20) and the bearing cylindrical body (70) are joined by shrink fit.
このような軸受構造によれば、セラミックスからなる軸
受筒体（６０）は緩衝層（５０）によって軸受本体（１
））側に接合され、他方、セラミックスからなる被軸受
筒体（７０）は緩衝層（８０）によって回転軸（２０）
側に接合されているので、軸受（１０）、回転軸（２０
）に振動や衝撃が加わって、軸受筒体（６０）と被軸受
筒体（７０）とが衝突状態となっても、その衝突力が各
緩衝層（５０） （８０）によってやわらげられ、軸受
筒体（６０）、被軸受筒体（７０）が損傷するのを防止
できる。According to such a bearing structure, the bearing cylindrical body (60) made of ceramics is connected to the bearing body (1) by the buffer layer (50).
)) side, and on the other hand, the bearing cylinder (70) made of ceramics is connected to the rotating shaft (20) by the buffer layer (80).
Since it is joined to the side, the bearing (10) and the rotating shaft (20
) is subjected to vibration or shock, and even if the bearing cylinder body (60) and the bearing cylinder body (70) collide, the collision force is softened by each buffer layer (50) (80), and the bearing Damage to the cylindrical body (60) and the bearing cylindrical body (70) can be prevented.
特に、軸受筒体（６０）の両端開口側は、緩衝層（５０
）の緩衝部材（５２） （５２）によって、外周側から
支持されているので、被軸受筒体（７０）との衝突に対
して、高い耐衝撃性を有し、欠は落ちや割れを生じない
ようになっている。In particular, the buffer layer (50
) is supported from the outer periphery by the buffer member (52) (52), so it has high impact resistance against collisions with the bearing cylinder (70), and does not cause chips or cracks. There is no such thing.
なお、上記実施例では、ラジアル軸受と回転軸との軸受
構造に本発明を適用したものについて説明したが、本発
明はこれに限らず、スラスト軸受、円すい軸受、球形軸
受等の軸受と回転軸との軸受構造に適用してもよい。In the above embodiment, the present invention was applied to a bearing structure of a radial bearing and a rotating shaft, but the present invention is not limited to this, and the present invention is applicable to bearings such as thrust bearings, conical bearings, spherical bearings, and rotating shafts. It may also be applied to bearing structures with
本発明によれば、軸受の軸受筒体と、この軸受筒体と摺
接関係にある回転軸の被軸受筒体とがセラミックスであ
るので、従来の金属同士が摺接する軸受構造に比し、摩
擦係数が小さく、しかも焼付や摩耗および腐蝕を生じな
い、その結果、軸受を無潤滑化、無シール化することが
できる。そのため、従来の軸受に比し、軸受構造の筒素
化、軽量化、小型化が可能であり、しかも、これらに伴
って保守点検の手間を大幅に低減できる利点を有する。According to the present invention, since the bearing cylindrical body of the bearing and the bearing cylindrical body of the rotating shaft that is in sliding contact with the bearing cylindrical body are made of ceramics, compared to the conventional bearing structure in which metals are in sliding contact with each other, It has a small coefficient of friction and does not cause seizure, wear, or corrosion. As a result, the bearing can be made without lubrication or sealing. Therefore, compared to conventional bearings, the bearing structure can be made cylindrical, lighter, and smaller, and has the advantage of significantly reducing maintenance and inspection costs.
また、本発明の軸受構造は、軸受または回転軸に、振動
や衝撃力が作用しても、緩衝層によって軸受筒体、被軸
受筒体に加わる衝撃力がやわらげられるので、損傷を生
じにくい。Further, in the bearing structure of the present invention, even if vibration or impact force is applied to the bearing or the rotating shaft, the impact force applied to the bearing cylinder and the bearing cylinder is softened by the buffer layer, so that damage is less likely to occur.
したがって、本発明の軸受構造は、信顧性の高い軸受機
能を有し、その実用上の効果は極めて大である。Therefore, the bearing structure of the present invention has a highly reliable bearing function, and its practical effects are extremely large.
第１図は本発明の実施例の軸受構造を概略的に示す説明
図である。
１０ニラシアル軸受、２０：回転軸、３０８軸受部材、
４０：金属筒体、５０：緩衝層、５１：金属めっき層、
５２．５２：緩衝部材、６０：軸受筒体、７０：被軸受
筒体、８０：緩衝層。FIG. 1 is an explanatory diagram schematically showing a bearing structure according to an embodiment of the present invention. 10 Nirasial bearing, 20: Rotating shaft, 308 Bearing member,
40: Metal cylindrical body, 50: Buffer layer, 51: Metal plating layer,
52.52: Buffer member, 60: Bearing cylinder, 70: Bearing cylinder, 80: Buffer layer.
Claims (1)
らなる軸受筒体が接合されている軸受部材と、 回転軸の外側に緩衝層を介して接合されているセラミッ
クスからなる被軸受筒体とが摺接関係にあることを特徴
とする軸受構造。(1) A bearing member in which a bearing cylinder made of ceramics is joined to the inside of a metal cylinder through a buffer layer, and a bearing cylinder made of ceramics joined to the outside of a rotating shaft through a buffer layer. A bearing structure characterized by a sliding relationship between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62251786A JP2527571B2 (en) | 1987-10-06 | 1987-10-06 | Ceramic bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62251786A JP2527571B2 (en) | 1987-10-06 | 1987-10-06 | Ceramic bearing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0193615A true JPH0193615A (en) | 1989-04-12 |
| JP2527571B2 JP2527571B2 (en) | 1996-08-28 |
Family
ID=17227909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62251786A Expired - Lifetime JP2527571B2 (en) | 1987-10-06 | 1987-10-06 | Ceramic bearing structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2527571B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5682783A (en) * | 1996-04-23 | 1997-11-04 | Mill Masters, Inc. | Ceramic tubemill roll assembly |
| JP2013517432A (en) * | 2010-01-22 | 2013-05-16 | フォイト・パテント・ゲーエムベーハー | Sliding bearing with hard / soft pairing |
| WO2019213202A1 (en) * | 2018-05-02 | 2019-11-07 | Borgwarner Inc. | Bearing unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55119425U (en) * | 1979-02-16 | 1980-08-23 | ||
| JPS62143814U (en) * | 1986-03-05 | 1987-09-10 |
-
1987
- 1987-10-06 JP JP62251786A patent/JP2527571B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55119425U (en) * | 1979-02-16 | 1980-08-23 | ||
| JPS62143814U (en) * | 1986-03-05 | 1987-09-10 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5682783A (en) * | 1996-04-23 | 1997-11-04 | Mill Masters, Inc. | Ceramic tubemill roll assembly |
| JP2013517432A (en) * | 2010-01-22 | 2013-05-16 | フォイト・パテント・ゲーエムベーハー | Sliding bearing with hard / soft pairing |
| US9062717B2 (en) | 2010-01-22 | 2015-06-23 | Voith Patent Gmbh | Plain bearing having a hard/soft pairing |
| WO2019213202A1 (en) * | 2018-05-02 | 2019-11-07 | Borgwarner Inc. | Bearing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2527571B2 (en) | 1996-08-28 |
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