WO2007015594A1 - Procede de fabrication d'un ensemble de roulements spheriques - Google Patents

Procede de fabrication d'un ensemble de roulements spheriques Download PDF

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Publication number
WO2007015594A1
WO2007015594A1 PCT/KR2006/000487 KR2006000487W WO2007015594A1 WO 2007015594 A1 WO2007015594 A1 WO 2007015594A1 KR 2006000487 W KR2006000487 W KR 2006000487W WO 2007015594 A1 WO2007015594 A1 WO 2007015594A1
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WO
WIPO (PCT)
Prior art keywords
spherical
spherical bearing
journal
bearing
molding
Prior art date
Application number
PCT/KR2006/000487
Other languages
English (en)
Inventor
Dai-Gil Lee
Byung-Chul Kim
Dong-Chang Park
Original Assignee
Korea Advanced Institute Of Science And Technology
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 Korea Advanced Institute Of Science And Technology filed Critical Korea Advanced Institute Of Science And Technology
Publication of WO2007015594A1 publication Critical patent/WO2007015594A1/fr

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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • F16C23/045—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings for radial load mainly, e.g. radial spherical plain bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
    • 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
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/208—Methods of manufacture, e.g. shaping, applying coatings
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/80—Thermosetting resins
    • F16C2208/82—Composites, i.e. fibre reinforced thermosetting resins
    • 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
    • F16C2220/02—Shaping by casting
    • F16C2220/06—Shaping by casting in situ casting or moulding

Definitions

  • the present invention is directed to a method for manufacturing a spherical bearing assembly made of composite materials and, more specifically, to a method for manufacturing a spherical bearing assembly made of composite materials, which can eliminate the need for a step of forcedly inserting a spherical journal into a spherical bearing while securing required strength and improving a lubrication characteristic.
  • a spherical bearing is a mechanical element for supporting a spherical journal and has been used in a wide variety of machines and devices.
  • a configuration of a typical spherical bearing assembly is shown in Fig. 1.
  • a spherical bearing 10 has a spherical inner surface, i.e., a bearing surface 11, in which a spherical journal 20 is received so as to form a spherical pair with the spherical bearing
  • the spherical journal 20 may be provided with a cylindrical inner bore into which a shaft is fitted removably.
  • the spherical bearing 10 and the spherical journal 20 are separately produced and then assembled together.
  • the spherical bearing 10 and the spherical journal 20 are produced independently of each other using relatively soft metal and relatively hard metal.
  • the hard spherical journal 20 is forcibly inserted into and thus coupled to the soft spherical bearing 10.
  • Fig. 2 illustrates a process for forming a typical spherical bearing assembly.
  • the spherical journal 20 is first placed at one edge of the spherical bearing 10. Then, if the spherical journal 20 is pressed into the spherical bearing 10 in a rotational axis direction of the spherical journal 20, one side of the spherical bearing
  • the spherical bearing 10 is enlarged radially outwardly to allow the spherical journal 20 to be inserted therethrough.
  • the inner and outer diameters of the spherical bearing 10 are increased by the plastic deformation of the spherical bearing 10.
  • the spherical bearing 10 is plastically deformed once again in a radially inward direction so that it can have the original inner and outer diameters.
  • the conventional process for manufacturing a spherical bearing assembly is complex to perform, low in productivity and difficult to form a uniform bearing clearance between the spherical bearing 10 and the spherical journal 20.
  • the spherical bearing 10 is attached to a target structural body, use is made of a method of forcedly fitting the spherical bearing 10 to the structural body.
  • a mounting portion somewhat greater in size than the spherical bearing 10 is formed on the target structural body, after which the spherical bearing 10 is fitted to the target structural body by punching a multiple points of the side surface of the spherical bearing 10 and thus enlarging the outer diameter thereof.
  • Use of these fitting methods is disadvantageous in that the spherical bearing is deformed in such a manner as to reduce the clearance between itself and the spherical journal, thereby creating contact points between them and sharply reducing the effect of lubrication.
  • Another problem is that the spherical bearing is damaged in the fitting process and may be broken by external impact or in-use vibration.
  • efforts have been extensively made to develop a spherical bearing made of a composite material which exhibits excellent compression strength, wear-resistance and lubrication performance and is easy to shape, as compared to metal.
  • U.S. Patent No. 6,209,206 discloses a spherical bearing that includes an outer race member provided at its inner surface with a self-lubricating material and made of resinous epoxy composite, and a separated inner race member provided with a self- lubricating material and made of glass-fiber epoxy composite.
  • the inner race member is fabricated by severing a ring-like member into two parts which in turn are inserted into the outer race member one by one.
  • U.S. Patent No. 5,762,424 teaches a spherical bearing assembly including a non- rotating housing, a glass-fiber composite socket, a metallic or glass-fiber composite ball, a composite bearing sleeve and a rotation shaft.
  • the bearing disclosed in U.S. Patent No. 6,209,206 can be produced more easily than conventional metal bearings, the clearance between the inner and outer race members may vary depending on the tolerance of a shaft penetrating through the inner race member. If the tolerance is not adjusted precisely, sliding movement may occur between the shaft and the inner race member in a non-lubricating condition.
  • the glass-fiber composite is excellent in shock-absorbability and strength, it shows greater thermal deformation and is inferior in the lubrication performance of glass-fibers as compared to carbon-fiber composite. This poses a disadvantage in that, if the self-lubricating layer wears away, the frictional coefficient is increased bitterly.
  • Another object of the present invention is to provide a method for manufacturing a spherical bearing assembly that enables a spherical bearing assembly to be produced without having to forcedly insert a spherical journal into a spherical bearing.
  • a method for manufacturing a spherical bearing assembly including the steps of: producing a spherical journal; and molding a spherical bearing with a composite material by using the spherical journal as a core.
  • the spherical journal may be produced with the composite material, in which case the step of producing the spherical journal preferably includes molding the spherical journal with the composite material and coating a metal film on an outer surface of the spherical journal molded.
  • the method of the present invention further includes a step of coating one member selected from the group consisting of a releasing agent and a self- lubricating material on the spherical journal prior to molding the spherical bearing.
  • the self-lubricating material coated on the spherical journal is combined with resin in the composite material and infiltrated into a bearing surface of the spherical bearing.
  • the method of the present invention further includes a step of bonding one member selected from the group consisting of a metal cover and a polymer material with an increased frictional coefficient on an outer surface of the spherical bearing molded. This helps to increase a coupling force of the spherical bearing assembly with a target structural body.
  • the method of the present invention further includes a step of fitting a ring on the spherical journal prior to molding the spherical bearing, in order to form a groove on a bearing surface of the spherical bearing. If the spherical bearing is molded in the state that the ring is fitted, a groove having the same shape as the space occupied by the ring is formed on the bearing surface of the spherical bearing. The ring may be removed after molding the spherical bearing or may be left as it is.
  • the method of the present invention further includes a step of machining a groove on the spherical journal molded.
  • the groove serves as a path of lubricant.
  • the method of the present invention further includes a step of inserting a lubrication member made of a self-lubricating material into between the spherical journal and the spherical bearing. This helps to enhance a lubrication characteristic of the spherical bearing assembly.
  • the step of molding the spherical bearing includes molding the spherical bearing by using a target structural body on which the spherical bearing is to be installed, as an outer mold.
  • FIG. l is a cross sectional view showing one example of a conventional spherical bearing assembly.
  • FIG. 2 is a cross sectional view illustrating a conventional process for assembling a spherical bearing assembly.
  • FIG. 3 is a flowchart showing one embodiment of a method for manufacturing a spherical bearing assembly in accordance with the present invention.
  • FIG. 4 is a cross sectional view depicting one example of a spherical bearing assembly produced by one embodiment of a method for manufacturing a spherical bearing assembly in accordance with the present invention.
  • FIG. 5 is a cross sectional view illustrating a spherical bearing assembly produced by a method for manufacturing a spherical bearing assembly in accordance with the present invention, in which a metal film is coated on a spherical journal.
  • FIG. 6 is a cross sectional view illustrating a spherical bearing assembly produced by a method for manufacturing a spherical bearing assembly in accordance with the present invention, in which a groove is formed on a spherical journal.
  • FIG. 7 is a cross sectional view illustrating a spherical bearing assembly produced by a method for manufacturing a spherical bearing assembly in accordance with the present invention, in which a groove is formed on a spherical bearing.
  • FIG. 8 is a cross sectional view illustrating a spherical bearing assembly produced by a method for manufacturing a spherical bearing assembly in accordance with the present invention, in which a protrusion is formed on a spherical bearing.
  • FIG. 9 is a flowchart showing a spherical journal production method employed in another embodiment of a method for manufacturing a spherical bearing assembly in accordance with the present invention.
  • FIG. 3 is a flowchart showing one embodiment of a method for manufacturing a spherical bearing assembly in accordance with the present invention.
  • FIG. 4 is a cross sectional view depicting one example of a spherical bearing assembly produced by the method shown in FIG. 3.
  • a spherical journal 100 with a spherical external shape is produced to have a cylindrical through-hole for reception of a mechanical component such as a shaft or the like (SlO).
  • the spherical journal 100 may be made of a metallic material and produced by means of casting, forging, cutting or other typical methods.
  • the spherical journal 100 may be produced by molding a composite material.
  • the composite spherical journal 100 is provided on its outer surface with a hard metal film 110 as illustrated in FIG. 5.
  • the metal film 110 may be formed either by bonding the same to the composite spherical journal 100 through a simultaneous hardening method or by forming the spherical journal 100 beforehand and then coating the metal film 110 by use of plasma spray coating, electroplating or the like.
  • the step of producing the spherical journal (SlO) includes molding a spherical journal with a composite material (S20) and coating a metal film on an outer surface of the spherical journal thus molded (S21 ), as illustrated in FIG. 9.
  • a groove 120 is formed on the outer surface of the spherical journal 100 (SIl). As shown in FIG. 6, the groove 120 serves as a lubricant path in an oil- lubricating environment.
  • the groove 120 is formed by cutting the outer surface of the spherical journal 100 in a circumferential direction.
  • the groove 120 can be simultaneously formed at the time of molding the spherical journal 100, which eliminates the need to form the groove 120 in a separate step.
  • the groove 120 is formed in the step (S20) of molding the spherical journal with the composite material but prior to the step (S21) of coating the metal film 110 on the outer surface of the spherical journal 100. If needed, the groove 120 may be formed by first coating the metal film on the outer surface of the composite spherical journal 100 and then cutting the outer surface of the spherical journal 100 in a circumferential direction. The next step is to mold a spherical bearing 200 with a composite material using the spherical journal 100 as an inner mold, i.e., a core (S 14).
  • the composite material for use in producing the spherical journal 100 and the spherical bearing 200 is preferably a fiber-reinforced composite material.
  • a fiber-reinforced composite material As reinforcing fibers of the fiber-reinforced composite material, use is made of carbon fibers, glass fibers, Kevlar fibers, or long or short fibers of polyethylene, nylon or other textile materials. Epoxy resin or phenol resin is used as a matrix of the fiber- reinforced composite material.
  • the fiber-reinforced composite material may be produced either by compression-molding a composite material in the form of a prepreg or by a resin transfer molding (RTM) method in which fibers are filled into a mold and then resin is injected into the mold.
  • RTM resin transfer molding
  • the bearing surface of the spherical bearing 200 may be molded with the prepreg of the composite material using the resin transfer molding method.
  • the pre-molded spherical journal 100 is used as a core whereby the spherical bearing assembly can be manufactured in such a condition that the spherical journal 100 is already inserted into the spherical bearing 200. This eliminates the need to separately produce the spherical bearing and the spherical journal and to forcedly insert the spherical journal into the spherical bearing.
  • the spherical bearing assembly is attached to a target structural body 300 by forcedly or thermally inserting the spherical bearing 200 into a pre-formed mounting portion, e.g., a bore, of the target structural body 300.
  • a forced or thermal insertion method may make uneven the bearing clearance between the spherical bearing 200 and the spherical journal 100 and thus may sharply reduce the lubrication performance of the spherical bearing assembly.
  • the target structural body 300 to which the spherical bearing assembly is to be attached is employed as an outer mold in the process of molding the spherical bearing 200. In a nutshell, as shown in FIG.
  • the spherical bearing 200 is molded by using the spherical journal 100 as a core and the target structural body 300 as an outer mold in the step (S 14) of molding the spherical bearing 200.
  • an additional closure plate may be optionally used in order to form the opposite side portions of the spherical bearing 200 protruding in a rotational axis direction of the spherical journal 100.
  • a bearing clearance is naturally created between the spherical journal 100 and the spherical bearing 200 in the course of thermally compression-molding and cooling the spherical bearing 200, due to the difference in the coefficient of thermal expansion between metal and composite. This facilitates mutual separation of the spherical journal 100 and the spherical bearing 200.
  • the bearing clearance can be adjusted by properly selecting the hardening temperature and pressure in due consideration of the thermal expansion of the spherical journal 100 and the spherical bearing 200.
  • the spherical journal 100 is made of a composite material and particularly where the metal film 110 is not coated on the outer surface thereof, it is preferred that, for the sake of assuring easier separation of the spherical journal 100 from the spherical bearing 200 and forming a clearance, a releasing agent or a self-lubricating material is coated on the outer surface of the spherical journal 100 (S12) prior to the step (S14) of molding the spherical bearing 200.
  • a groove serving as a lubricant path in an oil-lubricating environment is formed on a bearing surface of the spherical bearing 200.
  • a rubber ring or a PEEK- or PTFE-made polymer ring having increased deformability and reduced bondability to resin is fitted on the outer surface of the spherical journal 100 (S 13).
  • the spherical bearing 200 is molded with a composite material, at which time the ring-fitted spherical journal 100 is used as a core.
  • the spherical journal 100 is rotated 90 degrees to expose the bearing surface of the spherical bearing 200, after which the ring is removed to thereby form the groove 210.
  • PEEK, PTFE or the like is excellent in deformability and lacks bondability to resin. If such a material is used to produce the ring for forming the groove 210 on the spherical bearing 200, the ring may be used as dry lubricant without removal. In this case, the ring having no bondability and exhibiting a greater thermal expansion coefficient than a composite material is detached from a base, i.e., the spherical bearing, thereby leaving a clearance into which oil or grease can be infiltrated.
  • the ring assists in supplying lubricant.
  • the ring may be used in plural numbers to form two or more grooves 210 and may be formed into a variety of different shapes.
  • a lubrication member is inserted between the spherical journal 100 and the spherical bearing 200 to provide lubrication therebetween (S 16).
  • the lubrication member include typical lubricating oil and a self-lubricating material in the form of a grain or a film.
  • the lubrication member may be applied to the bearing surface of the spherical bearing 200. The following is a method of uniformly distributing the lubrication member in the form of a grain on the bearing surface of the spherical bearing 200 made of a composite material.
  • the spherical bearing 200 being formed of a composite prepreg, it is possible to use a method of either allowing the lubrication member in the form of a grain to be stuck to and deposited on the prepreg positioned on the bearing surface of the composite spherical bearing 200 or coating the lubrication member on the surface of spherical journal 100.
  • Use of a resin transfer molding method makes it difficult for grains to be adhered to a fiber preform.
  • use may be made of a method of injecting resin after a mixture of the lubrication member in the form of a grain and a self- lubricating binder is coated on the outer surface of the spherical journal 100.
  • the following is a method of bonding a lubrication member in the form of a film to the bearing surface of the composite spherical bearing 200.
  • One surface of the film is first subjected to surface treatment, such as etching, plasma treatment or the like, for the purpose of assuring easier adhesion to resin.
  • the film is placed on and bonded to the bearing surface of the spherical bearing 200.
  • solid lubricant such as PEEK, PTFE, graphite, MoS 2 or the like is used as the self-lubricating material.
  • oil or grease may be infiltrated into the bearing surface.
  • the spherical bearing 200 is dipped into a basin of oil or grease in a state that only the bearing surface of the spherical bearing 200 is exposed with the remaining portion thereof concealed, thereby allowing the oil or grease to infiltrate into the bearing surface.
  • the step (S 16) of providing the lubrication member between the spherical bearing and the spherical journal be performed after the step (S 14) of molding the spherical bearing.
  • the lubrication member in case of the lubrication member being of a film shape, the lubrication member can be easily inserted between the spherical bearing and the spherical journal by first placing the lubrication member on the outer surface of the spherical journal in advance of the spherical bearing molding step (S 14) and then molding the spherical bearing.
  • the step (S 16) of inserting the lubrication member may be at any time before and after the spherical bearing molding step (S 14).
  • the spherical bearing assembly manufactured through the steps described above is used in the following manner. Referring to FIG.
  • the spherical bearing 200 is installed by forced insertion or thermal insertion on a mounting portion, e.g., a bore, pre-formed in a target structural body 300.
  • the spherical bearing 200 needs either to be pressed against the target structural body 300 through deformation of the outer surface thereof or to be made of a material exhibiting high frictional force.
  • a protrusion 220 is formed on the outer surface of the spherical bearing 200.
  • the a protrusion 220 can be formed by forming in advance a groove on the target structural body 300 which is to be in contact with the outer surface of the spherical bearing 200 and then molding the spherical bearing 200 through the use of the target structural body 300 as an outer mold.
  • a groove may be formed on the outer surface of the spherical bearing 200 by forming in advance a protrusion on the target structural body 300 and then molding the spherical bearing 200.
  • the bearing surface spherically mating with the spherical journal is formed of a fiber-reinforced composite material having a self-lubricating characteristic. This assures mechanical strength, reduces frictional coefficient and prevents the components from sticking to one another by frictional heat, which in turn leads to great improvement in reliability. Furthermore, in the method for manufacturing a spherical bearing assembly of the present invention, the spherical journal is first produced and the spherical bearing is then molded using the spherical journal as a core.
  • spherical journal and the spherical bearing are not plastically deformed in the assembling process, which makes it possible to remarkably reduce residual stress which would otherwise be developed in the spherical bearing assembly.
  • use of a composite material excellent in specific strength provides a spherical bearing assembly that is structurally the same as the conventional spherical bearing assembly but weighs light. It is also easy to form a self-lubricating grains or a film on the outer surface of the spherical journal.
  • the present invention is also advantageous in that a groove for oil lubrication can be formed in the molding process without requiring any additional machining step.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Sliding-Contact Bearings (AREA)
  • Support Of The Bearing (AREA)

Abstract

Un procédé de fabrication d'un ensemble de roulements sphériques avec un matériau composite permet d'éviter l'introduction par la force d'un tourillon sphérique dans un roulement sphérique, tout en acquérant la résistance requise et en améliorant une caractéristique de lubrification. Le procédé consiste à produire un tourillon sphérique et à mouler un roulement sphérique avec un matériau composite en utilisant le tourillon sphérique comme noyau. Le tourillon sphérique peut être produit avec le matériau composite, auquel cas, l'étape de production du tourillon sphérique consiste à mouler le tourillon sphérique avec le matériau composite et à enduire un film métallique sur une surface extérieure du tourillon sphérique moulé.
PCT/KR2006/000487 2005-08-03 2006-02-10 Procede de fabrication d'un ensemble de roulements spheriques WO2007015594A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2005-0071051 2005-08-03
KR1020050071051A KR100660462B1 (ko) 2005-08-03 2005-08-03 구면베어링 조립체 제조방법

Publications (1)

Publication Number Publication Date
WO2007015594A1 true WO2007015594A1 (fr) 2007-02-08

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PCT/KR2006/000487 WO2007015594A1 (fr) 2005-08-03 2006-02-10 Procede de fabrication d'un ensemble de roulements spheriques

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WO (1) WO2007015594A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2472133A1 (fr) * 2009-08-28 2012-07-04 NTN Corporation Palier lisse, unité de palier lisse pourvu de celui-ci, et moteur pourvu de l' unité de palier
JP2019074152A (ja) * 2017-10-17 2019-05-16 Ntn株式会社 軸受の製造方法
WO2020020397A1 (fr) * 2018-07-27 2020-01-30 Schaeffler Technologies AG & Co. KG Procédé de fabrication d'un palier lisse et palier lisse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109963688B (zh) * 2016-11-18 2021-02-05 本田技研工业株式会社 两轮摩托车的组装方法及其装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005514A (en) * 1974-01-21 1977-02-01 The Heim Universal Company Spherical bearing assembly
EP0969217A2 (fr) * 1998-06-05 2000-01-05 Rexnord Corporation Palier sphérique composite et méthode de sa fabrication
US20050169562A1 (en) * 2004-01-29 2005-08-04 Korea Advanced Institute Of Science And Technology Bearing assembly and method for manufacturing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005514A (en) * 1974-01-21 1977-02-01 The Heim Universal Company Spherical bearing assembly
EP0969217A2 (fr) * 1998-06-05 2000-01-05 Rexnord Corporation Palier sphérique composite et méthode de sa fabrication
US20050169562A1 (en) * 2004-01-29 2005-08-04 Korea Advanced Institute Of Science And Technology Bearing assembly and method for manufacturing the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2472133A1 (fr) * 2009-08-28 2012-07-04 NTN Corporation Palier lisse, unité de palier lisse pourvu de celui-ci, et moteur pourvu de l' unité de palier
EP2472133A4 (fr) * 2009-08-28 2014-01-22 Ntn Toyo Bearing Co Ltd Palier lisse, unité de palier lisse pourvu de celui-ci, et moteur pourvu de l' unité de palier
US8746977B2 (en) 2009-08-28 2014-06-10 Ntn Corporation Slide bearing, slide bearing unit with same, and motor with the bearing unit
US9127710B2 (en) 2009-08-28 2015-09-08 Ntn Corporation Slide bearing, slide bearing unit with same, and motor with the bearing unit
JP2019074152A (ja) * 2017-10-17 2019-05-16 Ntn株式会社 軸受の製造方法
JP7050453B2 (ja) 2017-10-17 2022-04-08 Ntn株式会社 軸受の製造方法
WO2020020397A1 (fr) * 2018-07-27 2020-01-30 Schaeffler Technologies AG & Co. KG Procédé de fabrication d'un palier lisse et palier lisse

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Publication number Publication date
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