JPS6319627Y2 - - Google Patents

Info

Publication number
JPS6319627Y2
JPS6319627Y2 JP1983058789U JP5878983U JPS6319627Y2 JP S6319627 Y2 JPS6319627 Y2 JP S6319627Y2 JP 1983058789 U JP1983058789 U JP 1983058789U JP 5878983 U JP5878983 U JP 5878983U JP S6319627 Y2 JPS6319627 Y2 JP S6319627Y2
Authority
JP
Japan
Prior art keywords
bearing
dynamic pressure
oil
impregnated
sliding
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
Application number
JP1983058789U
Other languages
Japanese (ja)
Other versions
JPS59164822U (en
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 filed Critical
Priority to JP5878983U priority Critical patent/JPS59164822U/en
Publication of JPS59164822U publication Critical patent/JPS59164822U/en
Application granted granted Critical
Publication of JPS6319627Y2 publication Critical patent/JPS6319627Y2/ja
Granted legal-status Critical Current

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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/107—Grooves for generating pressure
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/128—Porous bearings, e.g. bushes of sintered alloy
    • 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
    • F16C39/00—Relieving load on bearings
    • F16C39/02—Relieving load on bearings using mechanical means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)

Description

【考案の詳細な説明】 本考案は滑り軸受に関するもので、詳しくは自
己潤滑性を有する焼結多孔質軸受において、回転
中の動圧効果を高め軸心の振れまわりを小さくす
ることを目的とした滑り軸受に関するものであ
る。従来、含油焼結多孔質軸受は自己潤滑性を有
する軸受として広く用いられているが、真円軸受
の一種であるため軸の偏心の小さいところでは回
転中の振れまわりが大きく、回転速度の1/2の速
度で振れまわるいわゆるホワールが発生しやすい
という欠点があつた。特にこの軸受を縦形で用い
る場合、ラジアル荷重がほとんど作用しないため
軸の振れまわりが大きくなりやすく、回転精度上
問題となつていた。この対策として軸受のすきま
を小さくすると、周囲温度の変化が大きい場合、
低温では軸受すきまが小さくなりすぎ焼付きが生
じやすくなるなどの欠点があつた。さらに近年は
使用機器の多様化、高精度化などに伴い、使用す
る軸受についても広い温度範囲にわたつて軸の振
れまわりを小さくすることが強く望まれている。[Detailed description of the invention] This invention relates to sliding bearings, and more specifically, the purpose of this invention is to increase the dynamic pressure effect during rotation and reduce the whirling of the shaft center in sintered porous bearings that have self-lubricating properties. This relates to sliding bearings. Conventionally, oil-impregnated sintered porous bearings have been widely used as bearings with self-lubricating properties, but since they are a type of true circular bearing, they have a large amount of whirling during rotation in areas with small shaft eccentricity, and the It had the disadvantage of being prone to so-called whirl, which swings around at a speed of /2. Particularly when this bearing is used vertically, the radial load hardly acts on it, so the shaft tends to swing around a lot, which poses a problem in terms of rotation accuracy. As a countermeasure to this problem, reducing the bearing clearance may cause large changes in ambient temperature.
At low temperatures, the bearing clearance became too small, making seizure more likely. Furthermore, in recent years, with the diversification and higher precision of the equipment used, there is a strong desire for the bearings used to have smaller shaft swings over a wide temperature range.

本考案の目的は上記欠点を改良した滑り軸受を
提供することにある。 The object of the present invention is to provide a sliding bearing that improves the above-mentioned drawbacks.

本考案の要旨とするところは、焼結多孔質材か
らなる含油滑り軸受の軸受面に、表面目つぶし加
工で形成した動圧発生用の溝が設けられ、含油滑
り形と動圧形とを兼ね備えているハイブリツド形
滑り軸受である。 The gist of the present invention is that the bearing surface of an oil-impregnated sliding bearing made of sintered porous material is provided with grooves for generating dynamic pressure formed by surface blinding, and it has both an oil-impregnated sliding type and a dynamic pressure type. This is a hybrid plain bearing.

図に示すものは本考案の実施例である。円筒形
状のハイブリツド形滑り軸受１０は焼結多孔質材
で作られており、その滑り軸受面１の部分には動
圧発生用の溝２が形成されている。この動圧発生
用の溝２の底面２１及び側面２２は前記滑り軸受
面１の滑り軸受面１１よりも表面の多孔質部は塑
性加工により目つぶしされている。 What is shown in the figure is an embodiment of the invention. A cylindrical hybrid sliding bearing 10 is made of a sintered porous material, and a groove 2 for generating dynamic pressure is formed in a sliding bearing surface 1 thereof. In the bottom surface 21 and side surfaces 22 of this groove 2 for generating dynamic pressure, porous portions on the surface of the sliding bearing surface 1 are closed by plastic working.

以上の構成である本考案のハイブリツド形滑り
軸受によれば、動圧発生用の溝の底面と側面が目
つぶし加工されていて、発生圧力が低下すること
なく、動圧発生力が大きい。従つて、本考案によ
れば回転中の動圧効果を大きくでき軸心の振れま
わりが改善されるばかりでなく、滑り軸受面との
協同作用により低速回転中の自己潤滑性にすぐれ
たもので、動圧溝付き軸受と含油焼結多孔質軸受
の利点を兼ねそなえたハイブリツド形滑り軸受で
ある。 According to the hybrid sliding bearing of the present invention having the above structure, the bottom and side surfaces of the groove for generating dynamic pressure are closed, and the generated pressure does not decrease and the dynamic pressure generating force is large. Therefore, according to the present invention, not only can the dynamic pressure effect be increased during rotation and the whirling of the shaft center is improved, but also it has excellent self-lubricating properties during low-speed rotation due to the cooperative action with the sliding bearing surface. This is a hybrid plain bearing that combines the advantages of a hydrodynamic grooved bearing and an oil-impregnated sintered porous bearing.

なお、動圧発生用溝面の目つぶし加工として
は、実施例にも示した塑性加工による目つぶしに
限定されるものではなく、樹脂の溶浸、メツキな
どでもよい、また、滑り軸受面以外の軸受表面は
目つぶしされていることが望ましいが、必ずしも
目つぶしが十分でない場合でも実用可能である。 Note that the closing process for the groove surface for dynamic pressure generation is not limited to closing by plastic working as shown in the examples, but may also include resin infiltration, plating, etc. Although it is desirable that the surface be blinded, it is practical even if the blinding is not sufficient.

さらに、こゝでいう含油焼結多孔質軸受に使用
する含油材は油、グリース、水などを含浸させて
おいてもよく、また種類の異なるものを予め含浸
させておくこともできる。また、動圧発生用溝の
断面形状は実施例に示した正方形に限定されるも
のでなく長方形、三角形、半円状のいずれであつ
てもよい。 Further, the oil-impregnated material used in the oil-impregnated sintered porous bearing mentioned above may be impregnated with oil, grease, water, etc., or may be impregnated with different types of materials in advance. Further, the cross-sectional shape of the dynamic pressure generating groove is not limited to the square shown in the embodiment, but may be rectangular, triangular, or semicircular.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の実施例の縦断面図、第２図は
要部拡大断面図で、図中符号１は軸受面、２は動
圧発生用の溝である。 FIG. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of a main part. In the figure, reference numeral 1 is a bearing surface, and 2 is a groove for generating dynamic pressure.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 焼結多孔質材からなる含油滑り軸受の軸受面
に、表面目つぶし加工で形成される動圧発生用の
溝が設けられ、含油滑り形と動圧形とを兼ね備え
ているハイブリツド形滑り軸受。 This is a hybrid type sliding bearing that is made of a sintered porous material and has grooves for generating dynamic pressure formed by surface blinding on the bearing surface of the oil-impregnated sliding bearing, and has both an oil-impregnated sliding type and a dynamic pressure type.
JP5878983U 1983-04-21 1983-04-21 Hybrid plain bearing Granted JPS59164822U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5878983U JPS59164822U (en) 1983-04-21 1983-04-21 Hybrid plain bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5878983U JPS59164822U (en) 1983-04-21 1983-04-21 Hybrid plain bearing

Publications (2)

Publication Number Publication Date
JPS59164822U JPS59164822U (en) 1984-11-05
JPS6319627Y2 true JPS6319627Y2 (en) 1988-06-01

Family

ID=30189062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5878983U Granted JPS59164822U (en) 1983-04-21 1983-04-21 Hybrid plain bearing

Country Status (1)

Country Link
JP (1) JPS59164822U (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2514379Y2 (en) * 1991-07-19 1996-10-16 アスモ株式会社 Oil-impregnated bearing with non-porous part
US5941646A (en) * 1996-12-25 1999-08-24 Ntn Corporation Hydrodynamic type porous oil-impregnated bearing and bearing device
JP4628246B2 (en) * 2005-01-28 2011-02-09 アルファナテクノロジー株式会社 Motor with sintered alloy dynamic pressure bearing
JP2006304565A (en) * 2005-04-25 2006-11-02 Matsushita Electric Ind Co Ltd Brushless electric motor and its manufacturing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035552A (en) * 1973-08-03 1975-04-04
JPS5817219A (en) * 1981-07-23 1983-02-01 Nippon Seiko Kk Dynamic-pressure radial bearing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035552A (en) * 1973-08-03 1975-04-04
JPS5817219A (en) * 1981-07-23 1983-02-01 Nippon Seiko Kk Dynamic-pressure radial bearing device

Also Published As

Publication number Publication date
JPS59164822U (en) 1984-11-05

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