WO2009041232A1 - Hydrodynamic bearing device - Google Patents

Hydrodynamic bearing device Download PDF

Info

Publication number
WO2009041232A1
WO2009041232A1 PCT/JP2008/065822 JP2008065822W WO2009041232A1 WO 2009041232 A1 WO2009041232 A1 WO 2009041232A1 JP 2008065822 W JP2008065822 W JP 2008065822W WO 2009041232 A1 WO2009041232 A1 WO 2009041232A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing sleeve
recessed part
bearing device
housing
hydrodynamic bearing
Prior art date
Application number
PCT/JP2008/065822
Other languages
French (fr)
Japanese (ja)
Inventor
Tatsuo Nakajima
Fumihiro Isobe
Original Assignee
Ntn Corporation
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
Priority claimed from JP2007249318A external-priority patent/JP2009079679A/en
Priority claimed from JP2007271620A external-priority patent/JP2009097672A/en
Priority claimed from JP2007271613A external-priority patent/JP2009097671A/en
Priority claimed from JP2007271607A external-priority patent/JP2009098071A/en
Priority claimed from JP2007278779A external-priority patent/JP2009108877A/en
Application filed by Ntn Corporation filed Critical Ntn Corporation
Publication of WO2009041232A1 publication Critical patent/WO2009041232A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • 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
    • F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
    • 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
    • F16C33/14—Special methods of manufacture; Running-in
    • 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)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Manufacturing & Machinery (AREA)
  • Sliding-Contact Bearings (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

A recessed part (8d1) is formed by removing a part of the outer peripheral surface (8d) of a bearing sleeve (8) by laser beam processing, and injection molding of a housing (7) is performed by using the bearing sleeve (8) as an insert part. The recessed part (8d1) of the bearing sleeve (8) and a part of the housing (7) intruded into the recessed part (8d1) are axially engaged with each other, and the force of the fixing between these members can be increased. Furthermore, the occurrence of cut chips can be prevented by forming the recessed part (8d1) by laser beam processing, and such an event that the inner peripheral surface (8a) of the bearing sleeve is deformed due to the fixing force during the processing can be avoided.
PCT/JP2008/065822 2007-09-26 2008-09-03 Hydrodynamic bearing device WO2009041232A1 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2007249318A JP2009079679A (en) 2007-09-26 2007-09-26 Fluid bearing device
JP2007-249318 2007-09-26
JP2007271620A JP2009097672A (en) 2007-10-18 2007-10-18 Manufacturing method of bearing parts
JP2007-271607 2007-10-18
JP2007271613A JP2009097671A (en) 2007-10-18 2007-10-18 Method for manufacturing bearing component
JP2007271607A JP2009098071A (en) 2007-10-18 2007-10-18 Method of inspecting bearing member of fluid bearing device
JP2007-271613 2007-10-18
JP2007-271620 2007-10-18
JP2007-278779 2007-10-26
JP2007278779A JP2009108877A (en) 2007-10-26 2007-10-26 Fluid bearing device and its manufacturing method

Publications (1)

Publication Number Publication Date
WO2009041232A1 true WO2009041232A1 (en) 2009-04-02

Family

ID=40511122

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/065822 WO2009041232A1 (en) 2007-09-26 2008-09-03 Hydrodynamic bearing device

Country Status (1)

Country Link
WO (1) WO2009041232A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103322044A (en) * 2013-06-08 2013-09-25 清华大学 Axial magnetic bearing with annular heat radiation structure
CN104568414A (en) * 2015-01-16 2015-04-29 江苏省特种设备安全监督检验研究院 Driving device for expansion joint test

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11182533A (en) * 1997-12-18 1999-07-06 Ntn Corp Dynamic pressure type porous oil impregnated bearing unit
JPH11294458A (en) * 1998-04-10 1999-10-26 Ntn Corp Dynamic pressure type slide bearing and manufacture thereof
JP2004052999A (en) * 2002-05-30 2004-02-19 Ntn Corp Fluid bearing device
JP2006017299A (en) * 2004-06-01 2006-01-19 Minebea Co Ltd Hydrodynamic bearing and spindle motor with the same, and recording disk driving device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11182533A (en) * 1997-12-18 1999-07-06 Ntn Corp Dynamic pressure type porous oil impregnated bearing unit
JPH11294458A (en) * 1998-04-10 1999-10-26 Ntn Corp Dynamic pressure type slide bearing and manufacture thereof
JP2004052999A (en) * 2002-05-30 2004-02-19 Ntn Corp Fluid bearing device
JP2006017299A (en) * 2004-06-01 2006-01-19 Minebea Co Ltd Hydrodynamic bearing and spindle motor with the same, and recording disk driving device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103322044A (en) * 2013-06-08 2013-09-25 清华大学 Axial magnetic bearing with annular heat radiation structure
CN103322044B (en) * 2013-06-08 2016-01-20 清华大学 A kind of axial magnetic bearing with annular heat radiation structure
CN104568414A (en) * 2015-01-16 2015-04-29 江苏省特种设备安全监督检验研究院 Driving device for expansion joint test

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