WO2005024255A1 - スラスト軸受 - Google Patents
スラスト軸受 Download PDFInfo
- Publication number
- WO2005024255A1 WO2005024255A1 PCT/JP2003/011218 JP0311218W WO2005024255A1 WO 2005024255 A1 WO2005024255 A1 WO 2005024255A1 JP 0311218 W JP0311218 W JP 0311218W WO 2005024255 A1 WO2005024255 A1 WO 2005024255A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cage
- thrust bearing
- rollers
- retainer
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/80—After-treatment
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
- F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
- F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/64—Special methods of manufacture
Definitions
- the present invention relates to an integrated thrust bearing in which a retainer for holding a raceway is not separated.
- thrust bearings that are not separated from the cage that houses the raceway to facilitate assembly to the housing or shaft.
- FIGS 10 (a) and (b) show examples of such an integrated thrust bearing.
- This thrust bearing is a three-piece integrated type including a cage 2 for radially storing a plurality of rollers 1, an inner ring 3 having a flange 3 a on the inner diameter side, and an outer ring 4 having a flange 4 a on the outer diameter side.
- the nails 5 projecting outward and the nails 6 projecting inward are formed at the tips of the flanges 3a and 4a by staking, respectively.
- the inner and outer rings 3 and 4 and the retainer 2 are not separated.
- Some integral thrust bearings are provided with only one of the inner and outer races, and two-in-one integral races in which this single race and the cage are not separated.
- the bearing ring, the cage and the rollers are individually heat-treated in advance, and then assembled together.
- bearing rings and cages are carburized and quenched after forming, and the rollers are quenched and tempered after rough forming, and then subjected to grinding and finishing.
- the cage may be subjected to nitrocarburizing instead of carburizing and tempering. Disclosure of the invention
- the bearing rings, cages and rollers are individually heat-treated before assembling them as bearings, so the number of heat treatment steps is increased, and the heat treatment cost is increased.
- the production period becomes longer due to the adjustment of the heat treatment step.
- an object of the present invention is to reduce the number of heat treatment steps for an integrated thrust bearing.
- the present invention provides a cage for radially storing a plurality of rollers in a pocket, and at least one of an inner ring having a flange on an inner diameter side and an outer ring having a flange on an outer diameter side.
- An integrated thrust bearing in which a radial inner bearing gap is regulated by the flange, and the race and the cage accommodating the rollers are not separated.
- a claw that protrudes toward the retainer and locks an inner peripheral edge or an outer peripheral edge of the retainer to make the raceway ring and the retainer non-separable, It can be formed by staking or bending.
- the cage is made of a thin steel plate, and the cage for accommodating the rollers is formed in a W-shape or an inverted V-shape by pressing in a radial cross section, so that the cage is inexpensive.
- the roller guide surface on both sides of the inverted V-shaped pocket is substantially at the center in the radial direction.
- Fig. 1a is a plan view showing the thrust bearing of the first embodiment
- b is a longitudinal sectional view of a
- c is
- Fig. 2a is a plan view of the cage of Fig. 1
- b is a vertical cross-sectional view of a
- Fig. 3a is an enlarged view of the main part of the cage of Fig. 2.
- Bottom view, b is a cross-sectional view taken along line Illb- Illb of a
- c is a cross-sectional view taken along line IIIc-IIIc of a
- FIG. 4 is a longitudinal cross-sectional view showing a modification of the thrust bearing of FIG.
- FIG. 1A is a plan view showing the thrust bearing of the second embodiment, b is a longitudinal sectional view of a,
- FIG. 6a is a plan view showing the thrust bearing of the third embodiment, and b is a longitudinal sectional view of a
- FIG. 7 is a longitudinal sectional view showing a modification of the thrust bearing of FIG. 6,
- FIG. 8 a is a plan view showing the thrust bearing of the fourth embodiment, b is a longitudinal sectional view of a, and
- FIG. FIG. 1B is a plan view showing the thrust bearing of the embodiment, b is a longitudinal sectional view of a,
- FIG. 10a is a plan view showing a conventional thrust bearing, and b is a longitudinal sectional view of a.
- this thrust bearing has a cage 2 for accommodating a plurality of rollers 1, an inner ring 3 having a flange 3a on the inner diameter side, and a flange 4 on the outer diameter side. It is a three-in-one type equipped with an outer ring 4 having a.
- the inner and outer diameter surfaces of the cage 2 do not come into contact with the respective flanges 3a, 4a even if a large eccentric rotation occurs in the bearing.
- the internal clearance in the radial direction is set to a large value.
- the inner ring 3 and the outer ring 4 are formed by pressing a thin steel plate (SPC or SCM) to form respective flanges 3a and 4a.
- a thin steel plate SPC or SCM
- a plurality of claws 6 are formed by bending to inwardly project more than the internal clearance of the bearing, and each of the claws 6 engages the outer peripheral edge of the cage 2.
- the cage 2 and the outer ring 4 are not separated from each other.
- the portion of each claw 6 is previously reduced in thickness by stepping in order to facilitate bending, and as shown in FIG. 1 (c), cuts are made on both sides of the base.
- the retainer 2 and the inner ring 3 are not separated by an outward claw 5 formed by staking at the tip of the flange 3a.
- the retainer 2 is formed by pressing a thin steel plate (SPC). As shown in FIGS. 2 (a) and 2 (b), the radial cross section of each pocket 7 for accommodating the rollers 1 in a radial direction is inverted. The edges of the inner and outer peripheries locked by the claws 5 and 6 are formed flat.
- this part is compressed at the approximate radial center of the roller guide surface 8 on both sides of the inverted V-shaped pocket 7.
- Roller stopper claws 9 projecting inward from each roller guide surface 8 due to the plastic flow, and plastic flow is caused on both sides by compression.
- a recess 10 is provided to allow the excess material to escape. Therefore, the roller 1 stored in each pocket 7 is prevented from falling out by the roller stopper claws 9 on both sides, and is guided by the smooth roller guide surface 8 without swelling due to excess material.
- the thrust bearing described above is assembled as shown in Fig. 1 (a) and (b), then carburized in a carburizing atmosphere, quenched in oil, and then tempered. It was done. Roller 1 made of bearing steel (SUJ 2) was quenched and quenched before assembly.
- each of the thrust bearings of the following embodiments and modifications thereof is the same as that of the first embodiment, and has been subjected to carburizing and quenching after assembling, and the material of each component is also the same as that of the first embodiment. It is the same as that of the first embodiment.
- FIG. 4 shows a modification of the first embodiment.
- This modified example is different in that the cage 2 has a W-shaped cross section in the radial direction formed by pressing.
- the configuration of the rollers 1 and the inner and outer rings 3, 4 is the same as that of the first embodiment.
- FIGS. 5A and 5B show a second embodiment.
- This thrust bearing is also of a three-in-one type, and each of the claws 3a of the inner and outer rings 3, 4 and each of the claws 5, 6 provided at the tip of the flange 4a are formed by staking. However, this is different from the first embodiment. Others are the same as those of the first embodiment.
- FIGS. 6A and 6B show a third embodiment.
- This thrust bearing is a two-piece integrated type including a cage 2 for radially storing a plurality of rollers 1 and an inner ring 3 having a flange 3 a on the inner diameter side.
- An outwardly extending claw 5 is formed around the entire circumference of the portion, and the claw 5 locks the inner peripheral edge of the retainer 2 so that the retainer 2 and the inner ring 3 are not separated.
- the portion of the claw 5 is previously reduced in thickness by stepping to facilitate bending.
- the retainer 2 is formed by pressing the pockets 7 for accommodating the rollers 1 in a cross section in the radial direction into an inverted V-shape by pressing, and is not shown.
- Roller guide pawls 9 on both sides of the pocket 7 are formed with roller stopper claws 9 projecting inward at approximately the center in the radial direction, and concave portions 10 are provided on both sides thereof to allow the excess material to escape.
- FIG. 7 shows a modification of the third embodiment. This modified example is different in that the radial cross-sectional shape of the cage 2 is formed in a W-shape by pressing.
- the configuration of the roller 1 and the inner and outer rings 3, 4 is the same as that of the third embodiment.
- FIGS. 8A and 8B show a fourth embodiment.
- This thrust bearing has multiple rollers 1 It is a two-piece integrated type having a retainer 2 for radial storage and an outer ring 4 having a flange 4a on the outer diameter side, and a claw 6 projecting inward at the tip of the flange 4a is partially ⁇ .
- the pawl 6 locks the outer peripheral edge of the retainer 2 so that the retainer 2 and the outer ring 4 are not separated.
- the cage 2 is the same as that of the first embodiment, and the pocket 7 for accommodating the roller 1 is formed in an inverted V-shape by pressing in a radial cross section.
- FIGS. 9A and 9B show a fifth embodiment.
- This thrust bearing is also of a two-piece type, and is formed by staking and a claw 5 s at the tip of a flange 3 a provided on the inner diameter side of the inner ring 3. Different from form. Others are the same as those of the third embodiment.
- the bearing ring and the cage are both formed by pressing a thin steel plate. Good.
- the heat treatment was carried out in a carburizing atmosphere for 85 ⁇ 35 minutes, carburizing, oil quenching, and then tempering in 16 ⁇ C ⁇ 60 minutes.
- the roller 1 used was oil-hardened in advance at 840 t ⁇ 30 minutes and then tempered at 180 ° C. for 90 minutes.
- the bearing dimensions are 56 mm in inner diameter, 76 mm in outer diameter, and 4.8 mm in thickness.
- Thrust bearings of the three-piece type shown in Fig. 10 and individually heat-treated before assembling the parts were prepared.
- the heat treatment conditions for each part were as follows: Roller 1 was oil quenched in 840 ⁇ X 30 minutes, then tempered in 180 t: X 90 minutes, and Cage 2 was 580 ⁇ X 35 minutes nitrocarburizing treatment, inner and outer rings 3 and 4 were carburized in a carburizing atmosphere at 850 ° C for 60 minutes, then oil-quenched, then tempered in 1650 OX 60 minutes. To do.
- the number of arrangements of the bearing dimensions 1 is the same as that of the embodiment.
- a rolling life test was performed on each of the thrust bearings of the example and the comparative example.
- the inner ring 3 is mounted on the thrust rotation tester with the outer ring 4 as the rotating side and the outer ring 4 as the fixed side, and the test is performed under the following conditions, with and without rotation eccentricity. went.
- the number of test samples was set to 10 or more in each of the examples and comparative examples, and the rolling life was The evaluation was made based on the L10 life (the life that 90% of the sample can be used without being damaged). • Axial load: 4300N
- Table 1 shows the test results.
- the rolling life of the example and the comparative example was expressed as a life ratio based on the L10 life of the comparative example when there was no rotation axis eccentricity.
- Table 1 also shows the Vickers hardness Hv on the surface and inside of each bearing part.
- the hardness ⁇ of each part in the example is almost the same as that of the comparative example in which the parts were individually heat-treated. .
- the hardness Hv of each part in the example is the actual measurement value this time, and the hardness Hv of each part in the comparative example, which is a conventional product, is the actual value so far.
- the rolling life of the thrust bearing of the example is the same as the rolling life of the comparative example without shaft eccentricity regardless of the presence or absence of shaft eccentricity. Therefore, it was confirmed that even if carburizing, quenching and tempering were performed after the assembly of the bearing and the heat treatment process was reduced, the rolling life equivalent to that of the conventional product could be secured. Note that the rolling life of the comparative example with shaft eccentricity was reduced by half, as described above, in the conventional product, where the cage was not separated by the claw formed by staking, and the radial bearing internal This is probably because the gap is small. Industrial potential
- the bearing ring and the retainer are assembled into an integral bearing with the rollers in an unhardened state, and then the assembled bearing is subjected to carburizing and tempering.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA038270137A CN1826477A (zh) | 2003-09-02 | 2003-09-02 | 推力轴承 |
PCT/JP2003/011218 WO2005024255A1 (ja) | 2003-09-02 | 2003-09-02 | スラスト軸受 |
AU2003264371A AU2003264371A1 (en) | 2003-09-02 | 2003-09-02 | Thrust bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/011218 WO2005024255A1 (ja) | 2003-09-02 | 2003-09-02 | スラスト軸受 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005024255A1 true WO2005024255A1 (ja) | 2005-03-17 |
Family
ID=34260118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/011218 WO2005024255A1 (ja) | 2003-09-02 | 2003-09-02 | スラスト軸受 |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN1826477A (ja) |
AU (1) | AU2003264371A1 (ja) |
WO (1) | WO2005024255A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008126513A1 (ja) * | 2007-03-26 | 2008-10-23 | Ntn Corporation | スラストころ軸受の軌道輪およびスラストころ軸受 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8061901B2 (en) * | 2008-08-22 | 2011-11-22 | Baldor Electric Company | Extension member for a flinger of a bearing |
CN103069017B (zh) * | 2010-07-02 | 2014-12-24 | Skf公司 | 制造轴承环的方法、轴承环和轴承 |
JP2013079718A (ja) * | 2011-09-20 | 2013-05-02 | Nsk Ltd | レース付スラストころ軸受 |
JP7079050B2 (ja) * | 2017-02-22 | 2022-06-01 | 株式会社ジェイテクト | スラストころ軸受用保持器及びスラストころ軸受 |
JP6867837B2 (ja) * | 2017-03-15 | 2021-05-12 | 住友重機械工業株式会社 | 偏心揺動型の歯車装置およびその製造方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS3714010B1 (ja) * | 1961-04-13 | 1962-09-14 | ||
JPS58125720U (ja) * | 1982-02-19 | 1983-08-26 | エヌ・テ−・エヌ東洋ベアリング株式会社 | スラスト針状ころ軸受 |
JPH0285011U (ja) * | 1988-12-20 | 1990-07-03 | ||
JPH0594527U (ja) * | 1992-05-25 | 1993-12-24 | エヌティエヌ株式会社 | スラストニードル軸受 |
JPH10237620A (ja) * | 1997-02-20 | 1998-09-08 | Ntn Corp | シェル型針状ころ軸受の製造方法 |
JP2003254327A (ja) * | 2002-03-04 | 2003-09-10 | Ntn Corp | スラスト軸受 |
-
2003
- 2003-09-02 AU AU2003264371A patent/AU2003264371A1/en not_active Abandoned
- 2003-09-02 WO PCT/JP2003/011218 patent/WO2005024255A1/ja active Application Filing
- 2003-09-02 CN CNA038270137A patent/CN1826477A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS3714010B1 (ja) * | 1961-04-13 | 1962-09-14 | ||
JPS58125720U (ja) * | 1982-02-19 | 1983-08-26 | エヌ・テ−・エヌ東洋ベアリング株式会社 | スラスト針状ころ軸受 |
JPH0285011U (ja) * | 1988-12-20 | 1990-07-03 | ||
JPH0594527U (ja) * | 1992-05-25 | 1993-12-24 | エヌティエヌ株式会社 | スラストニードル軸受 |
JPH10237620A (ja) * | 1997-02-20 | 1998-09-08 | Ntn Corp | シェル型針状ころ軸受の製造方法 |
JP2003254327A (ja) * | 2002-03-04 | 2003-09-10 | Ntn Corp | スラスト軸受 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008126513A1 (ja) * | 2007-03-26 | 2008-10-23 | Ntn Corporation | スラストころ軸受の軌道輪およびスラストころ軸受 |
Also Published As
Publication number | Publication date |
---|---|
AU2003264371A1 (en) | 2005-03-29 |
CN1826477A (zh) | 2006-08-30 |
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