JPS57154518A - Method of manufacturing bearing for electric enclosed compressor - Google Patents

Method of manufacturing bearing for electric enclosed compressor

Info

Publication number
JPS57154518A
JPS57154518A JP16101381A JP16101381A JPS57154518A JP S57154518 A JPS57154518 A JP S57154518A JP 16101381 A JP16101381 A JP 16101381A JP 16101381 A JP16101381 A JP 16101381A JP S57154518 A JPS57154518 A JP S57154518A
Authority
JP
Japan
Prior art keywords
bearing
mold
molds
moved
central
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.)
Pending
Application number
JP16101381A
Other languages
Japanese (ja)
Inventor
Nobuo Abe
Mitsuru Murata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP16101381A priority Critical patent/JPS57154518A/en
Publication of JPS57154518A publication Critical patent/JPS57154518A/en
Pending 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
    • 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
    • F16C33/1065—Grooves on a bearing surface for distributing or collecting the liquid
    • 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
    • F16C2220/00—Shaping
    • F16C2220/20—Shaping by sintering pulverised material, e.g. powder metallurgy

Abstract

PURPOSE:To heighten the efficiency of production of a bearing, by making a spiral oil supply groove on the inside surface of the hole of the bearing in molding the bearing of sintered alloy. CONSTITUTION:Powder to be sintered is put in a cavity defined by an upper and a lower vertically-movable molds 7, 8, a central mold 9 having a spiral protrusion 9a on the peripheral surface and a side mold 10. The upper mold 7 is moved down and the lower mold 8 is moved up while the central mold 9 is turned. The movement of these molds 7, 8, 9 is stopped when the cavity is set in the prescribed form of a bearing 11. The molds 7, 8, 9 are removed from the molded powder as the upper mold 7 is moved up, the lower one 8 is moved down and the central one 9 is turned. According to this method, an oil supply groove 11a is provided in molding the bearing 11 of sintered alloy, the diameter of the hole 11b of the bearing can be made small, the accuracy is heightened and the lifetime of a cutting tool is lengthened.
JP16101381A 1981-10-12 1981-10-12 Method of manufacturing bearing for electric enclosed compressor Pending JPS57154518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16101381A JPS57154518A (en) 1981-10-12 1981-10-12 Method of manufacturing bearing for electric enclosed compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16101381A JPS57154518A (en) 1981-10-12 1981-10-12 Method of manufacturing bearing for electric enclosed compressor

Publications (1)

Publication Number Publication Date
JPS57154518A true JPS57154518A (en) 1982-09-24

Family

ID=15726914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16101381A Pending JPS57154518A (en) 1981-10-12 1981-10-12 Method of manufacturing bearing for electric enclosed compressor

Country Status (1)

Country Link
JP (1) JPS57154518A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230905A (en) * 1984-04-27 1985-11-16 Tanashin Denki Co Powder alloy bearing and its production
NL1008457C2 (en) * 1997-03-06 2000-08-15 Ntn Toyo Bearing Co Ltd Hydrodynamic, porous oil-impregnated bearing.
DE102005044310A1 (en) * 2005-09-16 2007-04-05 Minebea Co., Ltd. Rotor for a fluid-dynamic system of bearings has hydrodynamic radial/axial bearing structures on selected surfaces to take the shape of recesses and/or bumps

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230905A (en) * 1984-04-27 1985-11-16 Tanashin Denki Co Powder alloy bearing and its production
JPH0121203B2 (en) * 1984-04-27 1989-04-20 Tanashin Denki Co
NL1008457C2 (en) * 1997-03-06 2000-08-15 Ntn Toyo Bearing Co Ltd Hydrodynamic, porous oil-impregnated bearing.
US6299356B1 (en) 1997-03-06 2001-10-09 Ntn Corporation Hydrodynamic type porous oil-impregnated bearing
US6513980B2 (en) 1997-03-06 2003-02-04 Ntn Corporation Hydrodynamic type porous oil-impregnated bearing
US6533460B2 (en) 1997-03-06 2003-03-18 Ntn Corporation Hydrodynamic type porous oil-impregnated bearing
US7059052B2 (en) 1997-03-06 2006-06-13 Ntn Corporation Hydrodynamic type porous oil-impregnated bearing
DE102005044310A1 (en) * 2005-09-16 2007-04-05 Minebea Co., Ltd. Rotor for a fluid-dynamic system of bearings has hydrodynamic radial/axial bearing structures on selected surfaces to take the shape of recesses and/or bumps
DE102005044310B4 (en) * 2005-09-16 2016-03-24 Minebea Co., Ltd. Spindle motor with a rotor and a fluid dynamic bearing system

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