JP2012241728A - 焼結軸受及びこれを備えた流体動圧軸受装置 - Google Patents
焼結軸受及びこれを備えた流体動圧軸受装置 Download PDFInfo
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- JP2012241728A JP2012241728A JP2011109307A JP2011109307A JP2012241728A JP 2012241728 A JP2012241728 A JP 2012241728A JP 2011109307 A JP2011109307 A JP 2011109307A JP 2011109307 A JP2011109307 A JP 2011109307A JP 2012241728 A JP2012241728 A JP 2012241728A
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- Prior art keywords
- bearing
- powder
- sintered
- metal
- sintered bearing
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- Granted
Links
- 239000012530 fluid Substances 0.000 title claims description 24
- 239000000843 powder Substances 0.000 claims abstract description 104
- 229910052751 metal Inorganic materials 0.000 claims abstract description 70
- 239000002184 metal Substances 0.000 claims abstract description 70
- 238000002844 melting Methods 0.000 claims abstract description 29
- 230000008018 melting Effects 0.000 claims abstract description 29
- 230000002093 peripheral effect Effects 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 238000005245 sintering Methods 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 229910052718 tin Inorganic materials 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims 1
- 239000011148 porous material Substances 0.000 abstract description 13
- 238000005461 lubrication Methods 0.000 abstract description 6
- 238000005204 segregation Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 2
- 229910017755 Cu-Sn Inorganic materials 0.000 description 15
- 229910017927 Cu—Sn Inorganic materials 0.000 description 15
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 15
- 239000003921 oil Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 230000001050 lubricating effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 238000004513 sizing Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 3
- 229910017518 Cu Zn Inorganic materials 0.000 description 2
- 229910017752 Cu-Zn Inorganic materials 0.000 description 2
- 229910017943 Cu—Zn Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010191 image analysis Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001096 P alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
- F16C17/102—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure
- F16C17/107—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure with at least one surface for radial load and at least one surface for axial load
-
- 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
- F16C33/121—Use of special materials
-
- 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
- F16C2204/00—Metallic materials; Alloys
- F16C2204/10—Alloys based on copper
- F16C2204/12—Alloys based on copper with tin as the next major constituent
-
- 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
- F16C2370/00—Apparatus relating to physics, e.g. instruments
- F16C2370/12—Hard disk drives or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sliding-Contact Bearings (AREA)
- Powder Metallurgy (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
【解決手段】焼結金属の原料に、主成分金属(Cu)と低融点金属(Sn)とからなる部分合金化粉を含む金属粉末を用いる。これにより、Snが焼結金属に均一に拡散されるため、Snの偏析を防止できる。また、部分合金化粉は、微細な粒子を簡単に製造できるため、焼結金属の組織を微細化できると共に、Snの溶融による気孔も微細化できる。以上により、表面開孔を微細化して最大径を100μm以下とすることが可能となる。
【選択図】図7
Description
2 軸部材
3 ディスクハブ
4 ステータコイル
5 ロータマグネット
6 モータブラケット
7 ハウジング
8 焼結軸受
8a 内周面(ラジアル軸受面)
8a1,8a2 動圧溝(ラジアル動圧発生部)
8c 下側端面(スラスト軸受面)
8c1 動圧溝(スラスト動圧発生部)
9 シール部材
D ディスク
R1,R2 ラジアル軸受部
T1,T2 スラスト軸受部
S シール空間
Claims (7)
- 金属粉末の圧粉体を焼結して得られる焼結金属からなり、内周面にラジアル軸受面が形成された焼結軸受であって、
金属粉末が、主成分金属粉末及び低融点金属粉末の混合粉末を焼成して得られる部分合金化粉を含み、表面開孔の最大径を100μm以下とした焼結軸受。 - 低融点金属がSn、主成分金属がCuであり、CuとSnの部分合金化粉を用いた請求項1の焼結軸受。
- 部分合金化粉の粒径が50μm以下である請求項1又は2の焼結軸受。
- 金属粉末の圧粉体を焼結して得られる焼結金属からなり、内周面にラジアル軸受面が形成された焼結軸受であって、
金属粉末が、主成分金属及び低融点金属の合金からなる合金粉を含み、表面開孔の最大径を100μm以下とした焼結軸受。 - 低融点金属がSn、主成分金属がCuであり、CuとSnの合金粉を用いた請求項4の焼結軸受。
- ラジアル軸受面にラジアル動圧発生部が形成された請求項1〜5何れかの焼結軸受。
- 請求項1〜6何れかの焼結軸受と、焼結軸受の内周に挿入された軸部材と、焼結軸受のラジアル軸受面と軸部材の外周面との間のラジアル軸受隙間に生じる流体膜で、軸部材を相対回転自在に支持するラジアル軸受部とを備えた流体動圧軸受装置。
Priority Applications (1)
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JP2011109307A JP5881975B2 (ja) | 2011-05-16 | 2011-05-16 | 焼結軸受の製造方法 |
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JP2011109307A JP5881975B2 (ja) | 2011-05-16 | 2011-05-16 | 焼結軸受の製造方法 |
Publications (2)
Publication Number | Publication Date |
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JP2012241728A true JP2012241728A (ja) | 2012-12-10 |
JP5881975B2 JP5881975B2 (ja) | 2016-03-09 |
Family
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JP2011109307A Active JP5881975B2 (ja) | 2011-05-16 | 2011-05-16 | 焼結軸受の製造方法 |
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JP (1) | JP5881975B2 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103537683A (zh) * | 2013-10-17 | 2014-01-29 | 浙江衢州永丰金属制品有限公司 | 一种生产电磁感应定子的粉末冶金方法 |
WO2015012055A1 (ja) * | 2013-07-22 | 2015-01-29 | Ntn株式会社 | 焼結軸受及びその製造方法 |
WO2015137059A1 (ja) * | 2014-03-11 | 2015-09-17 | Ntn株式会社 | 焼結軸受とこれを備えた流体動圧軸受装置及びモータ、並びに焼結軸受の製造方法 |
JP2019070194A (ja) * | 2018-11-29 | 2019-05-09 | 住友電工焼結合金株式会社 | 焼結部品 |
US11305347B2 (en) | 2014-12-12 | 2022-04-19 | Sumitomo Electric Sintered Alloy, Ltd. | Method for manufacturing sintered component, sintered component, and drill |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH01225749A (ja) * | 1988-03-03 | 1989-09-08 | Isamu Kikuchi | 含油軸受用焼結材およびその製造法 |
JPH04333A (ja) * | 1990-04-16 | 1992-01-06 | Mitsubishi Materials Corp | 耐焼き付性および耐摩耗性に優れた銅基焼結合金 |
JP2000230556A (ja) * | 1999-02-09 | 2000-08-22 | Nippon Kagaku Yakin Co Ltd | 軸 受 |
JP2003156044A (ja) * | 2001-11-21 | 2003-05-30 | Heiwa Sangyo Kk | 焼結含油軸受及びその空孔内油圧保持構造、並びに焼結含油軸受の製造方法 |
JP2005147201A (ja) * | 2003-11-12 | 2005-06-09 | Heiwa Sangyo Kk | 焼結含油軸受と焼結含油軸受の製造方法 |
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JP2009222073A (ja) * | 2008-03-13 | 2009-10-01 | Totan Kako Kk | 2層軸受及びその製造方法 |
JP2009275291A (ja) * | 2005-01-06 | 2009-11-26 | Ntn Corp | 焼結金属材およびこの金属材で形成された焼結含油軸受 |
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JP2010223246A (ja) * | 2009-03-19 | 2010-10-07 | Ntn Corp | 焼結金属軸受 |
JP2010261077A (ja) * | 2009-05-08 | 2010-11-18 | Ntn Corp | 焼結機械部品 |
JP2011033156A (ja) * | 2009-08-04 | 2011-02-17 | Ntn Corp | 焼結金属製軸受およびその製造方法 |
-
2011
- 2011-05-16 JP JP2011109307A patent/JP5881975B2/ja active Active
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH01225749A (ja) * | 1988-03-03 | 1989-09-08 | Isamu Kikuchi | 含油軸受用焼結材およびその製造法 |
JPH04333A (ja) * | 1990-04-16 | 1992-01-06 | Mitsubishi Materials Corp | 耐焼き付性および耐摩耗性に優れた銅基焼結合金 |
JP2000230556A (ja) * | 1999-02-09 | 2000-08-22 | Nippon Kagaku Yakin Co Ltd | 軸 受 |
JP2003156044A (ja) * | 2001-11-21 | 2003-05-30 | Heiwa Sangyo Kk | 焼結含油軸受及びその空孔内油圧保持構造、並びに焼結含油軸受の製造方法 |
JP2005147201A (ja) * | 2003-11-12 | 2005-06-09 | Heiwa Sangyo Kk | 焼結含油軸受と焼結含油軸受の製造方法 |
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JP2006214003A (ja) * | 2005-01-06 | 2006-08-17 | Ntn Corp | 焼結金属材およびこの金属材で形成された焼結含油軸受 |
JP2007177808A (ja) * | 2005-12-27 | 2007-07-12 | Hitachi Powdered Metals Co Ltd | 動圧軸受ユニット |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2015012055A1 (ja) * | 2013-07-22 | 2015-01-29 | Ntn株式会社 | 焼結軸受及びその製造方法 |
JP2015021586A (ja) * | 2013-07-22 | 2015-02-02 | Ntn株式会社 | 焼結軸受及びその製造方法 |
CN105393005A (zh) * | 2013-07-22 | 2016-03-09 | Ntn株式会社 | 烧结轴承及其制造方法 |
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US11305347B2 (en) | 2014-12-12 | 2022-04-19 | Sumitomo Electric Sintered Alloy, Ltd. | Method for manufacturing sintered component, sintered component, and drill |
US11325186B2 (en) | 2014-12-12 | 2022-05-10 | Sumitomo Electric Sintered Alloy, Ltd. | Method for manufacturing sintered component, sintered component, and drill |
JP2019070194A (ja) * | 2018-11-29 | 2019-05-09 | 住友電工焼結合金株式会社 | 焼結部品 |
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