WO2014098212A1 - Roulement - Google Patents

Roulement Download PDF

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Publication number
WO2014098212A1
WO2014098212A1 PCT/JP2013/084232 JP2013084232W WO2014098212A1 WO 2014098212 A1 WO2014098212 A1 WO 2014098212A1 JP 2013084232 W JP2013084232 W JP 2013084232W WO 2014098212 A1 WO2014098212 A1 WO 2014098212A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
circumferential
rolling
circumferential direction
rolling bearing
Prior art date
Application number
PCT/JP2013/084232
Other languages
English (en)
Japanese (ja)
Inventor
山口　晃
片岡　健一
鈴木　佑
Original Assignee
日本精工株式会社
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 日本精工株式会社 filed Critical 日本精工株式会社
Priority to CN201380008723.XA priority Critical patent/CN104105893A/zh
Priority to DE212013000259.9U priority patent/DE212013000259U1/de
Publication of WO2014098212A1 publication Critical patent/WO2014098212A1/fr

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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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
    • 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
    • F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers
    • 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
    • F16C33/51—Cages for rollers or needles formed of unconnected members
    • F16C33/513—Cages for rollers or needles formed of unconnected members formed of arcuate segments for carrying one or more rollers
    • 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
    • F16C19/34—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 both radial and axial load
    • F16C19/36—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 both radial and axial load with a single row of rollers
    • F16C19/364—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 both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm

Definitions

  • the present invention relates to a rolling bearing.
  • Rolling bearings generally include an outer ring, an inner ring, and a plurality of rolling elements disposed between the outer ring and the inner ring, and the plurality of rolling elements are held by a cage.
  • a cage an integrated cage formed of a single member is usually used.
  • large-sized rolling bearings used in wind power generators, steel facilities, construction machinery, etc. require assembly and maintenance.
  • a split cage may be used.
  • Such a split type retainer forms a retainer having a cylindrical shape or a truncated cone shape as a whole by combining a plurality of retainer segments in series in the circumferential direction (for example, Patent Documents 1 and 2).
  • each cage segment 121 formed in an arc shape is combined in series in the circumferential direction to form a so-called divided cage 120 having a cylindrical or conical cylindrical shape as a whole.
  • each cage segment 121 is formed in an arc shape as a whole, and a pair of rim portions 102, 102 provided at both axial ends are arc-shaped, and the rim portion 102. , 102 are connected to each other.
  • the circumferential side surfaces of the column portions 101, 101 serve as guide surfaces for guiding the rolling surfaces of the respective rollers.
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide a rolling bearing provided with a split cage that can be manufactured at low cost.
  • a rolling bearing comprising: a retainer that holds the rolling element in a pocket formed by the pair of side plate portions and the pillar portion facing in the circumferential direction;
  • the radially outer end surface and the radially inner end surface of the side plate portion are planes parallel to each other,
  • the cage formed by combining a plurality of cage segments in series in the circumferential direction constitutes a substantially polygonal cylinder shape or
  • the column portion is provided with a protrusion that prevents the rolling element from falling off radially outwardly,
  • the rolling bearing according to (1) wherein the protrusion and the guide have a shape along the rolling element disposed on the inner ring raceway surface.
  • the cage segment has a protruding portion that protrudes in the circumferential direction from both circumferential end surfaces of the cage segment continuously from the axially outer end surface of each side plate portion, The axially inner end surface of the protruding portion is located axially inner than the axially inner end surface of the side plate portion,
  • the rolling bearing according to (1) or (2) wherein when the plurality of cage segments are combined in series in the circumferential direction, the neighboring cage segments are in contact with each other at the protruding portion.
  • the cage segment is formed of any synthetic resin of aromatic nylon, polyetheretherketone, and polyphenylsulfide, according to any one of (1) to (3), Rolling bearing.
  • FIG. 3 is a circumferential sectional view of the cage segment of FIG. 2.
  • FIG. 3 is a side view of the cage segment of FIG. 2.
  • FIG. 3 is a plan view of the cage segment of FIG. 2.
  • FIG. 3 is a circumferential sectional view of the cage segment of FIG. 2 and is a view for explaining a radial gap between a guide portion and a tapered roller.
  • FIG. 3 is a cross-sectional view in the circumferential direction of the cage segment of FIG. 2 for explaining the shape of a guide portion.
  • FIG. 9 is a side view of the cage segment of FIG. 8.
  • FIG. 9 is a plan view of the cage segment of FIG. 8. It is a principal part enlarged view of FIG. It is a schematic diagram which shows an example of the conventional split type holder. It is a perspective view of the retainer segment of the conventional split type retainer.
  • the cage 20 used in the rolling bearing of this embodiment includes a plurality of cage segments 21 formed of a synthetic resin such as aromatic nylon, polyether ether ketone, polyphenylene sulfide, in the circumferential direction.
  • This is a so-called split type cage formed by combining in series.
  • the cage 20 is formed by combining 18 cage segments 21 in series in the circumferential direction.
  • the number of cage segments necessary to form one cage is referred to as the number of cage divisions (18 in this example).
  • the cage segments 21 are not mechanically coupled to each other, but are arranged in series in the circumferential direction between the outer ring and the inner ring to form the cage 20.
  • each cage segment 21 includes a pair of side plate portions 2 and 2 arranged parallel to the axial direction, and a plurality of the side plate portions 2 and 2 that connect the pair of side plate portions 2 and 2 in the axial direction.
  • Column part 1 A pocket 3 for holding the tapered roller 7 (see FIG. 3) is formed by the axially inner end surfaces 2c and 2c of the side plate portions 2 and 2 and the side surfaces 1c and 1c of the column portions 1 and 1 facing in the circumferential direction. It is formed.
  • a pair of side plate portions 2 and 2 are connected by four column portions 1 arranged at a predetermined interval in the circumferential direction, whereby three pockets 3 are formed.
  • the tapered rollers 7 held one by one in each pocket 3 of the cage segment 21 include an outer ring raceway surface 70 formed on the inner peripheral surface of the outer ring and an inner ring raceway surface 80 formed on the outer peripheral surface of the inner ring. It is arranged so that it can roll between.
  • each pillar portion 1 is formed with an oil groove 4 that opens radially inward in the axially intermediate portion and penetrates in the circumferential direction, and the rolling surface of the tapered roller 7 and the inner ring raceway. Lubrication between the surface 80 is possible.
  • a pair of protrusions 5, 5 provided side by side in the axial direction are formed in the vicinity of the radially outer side of the side surface 1 c of the column part 1. Is prevented from falling off radially outward.
  • each side plate portion 2 is configured such that the radially outer end surface 2 a and the radially inner end surface 2 b are parallel to each other.
  • retainer segment 21 becomes easy, and it becomes possible to manufacture more cheaply.
  • the circumferential direction end surfaces 1a and 1a of the cage segment 21 are formed so as to form a predetermined inclination angle C from the radially outer side to the inner side according to the number of cage divisions. Yes.
  • the circumferential end surfaces 1 a and 1 a of the cage segment 21 have a predetermined inclination angle from one side in the axial direction toward the other side depending on the number of cage divisions and the shape of the cage 20. D is formed.
  • a plurality of cage segments 21 are butted in the circumferential direction and combined in series, whereby a generally polygonal truncated cone-shaped cage 20 can be configured.
  • reference numeral 2 d denotes an axially outer end surface of the pair of side plate portions 2 and 2.
  • the design value of the circumferential dimension H for assembling the plurality of cage segments 21 without gaps in the circumferential direction is the inner ring dimension and the outer ring dimension when the cage segments 21 are the same. It is geometrically determined by the roller size of the tapered roller 7, the number of rollers, the gap between the pocket 3 and the tapered roller 7, the thickness of the cage 20, and the number of cage segments 21.
  • the circumferential dimension H of the target cage segment 21 the radially outer end face 2a of the side plate portion 2 may be used, or the radially inner end face 2b may be used.
  • the circumferential dimension H of the plurality of cage segments 21 is specified such that the actual length at normal temperature (about 20 ° C.) is 0.075% or less in absolute value with respect to the design value. That is, by making the difference between the design value of the circumferential dimension H of the plurality of cage segments 21 and the actual length at normal temperature (about 20 ° C.) 0.075% or less in absolute value, Can be combined with almost no gap.
  • the pocket 3 is formed such that a gap e between which the cage segment 21 can be displaced in the radial direction is provided between the guide portion 6 and the rolling surface of the tapered roller 7. Yes.
  • the cage segment 21 can be displaced in the outer diameter direction within the gap e, so The interference between the vessel segments 21 and 21 can be reduced. Therefore, the distortion of the pocket 3 and the breakage of the cage segment 21 can be prevented.
  • the protrusion 5 and the guide 6 of the column part 1 are formed in a shape along the rolling surface of the tapered roller 7.
  • one central pocket 3 a disposed in the center and two end pockets 3 b disposed on both sides in the circumferential direction of the central pocket 3 a are projected.
  • the shapes of the part 5 and the guide part 6 are changed.
  • the central pocket 3 a is provided with projections 5 a and 5 a that are formed short inward in the radial direction so as not to disturb the rolling of the tapered roller 7. ing. Further, the guide surfaces 6 a and 6 a of the guide portion 6 in the central pocket 3 a are formed in a shape along the conical trapezoid 8 by a radius of curvature along the conical trapezoid 8 larger than the tapered roller 7.
  • the central protrusion 5 b formed long toward the radially inner side so as to prevent the tapered roller 7 from falling off, and the tapered roller 7 is provided with a projection 5b 'on the end side that is formed to be short inward in the radial direction so as not to interfere with the rolling of 7.
  • the guide surface 6b on the center side of the guide portion 6 and the guide surface 6b 'on the end portion side in the end pocket 3b have a radius of curvature along the conical trapezoid 8 and are center pockets around the rotation axis of the rolling bearing.
  • the projections 5a, 5b, 5b ′ and the guide surfaces 6a, 6b, 6b ′ are along the rolling surface of the tapered roller 7 arranged between the outer ring raceway surface 70 and the inner ring raceway surface 80.
  • the tapered roller 7 can be reliably guided by being formed into a shape.
  • the radial outer end surface 2a and the radial inner end surface 2b of the cage segment 21 are planes parallel to each other.
  • the side plate portion 2 can be easily processed with a mold, and can be manufactured at a lower cost.
  • the cage segment 21 is formed of a synthetic resin such as aromatic nylon, polyetheretherketone, or polyphenylene sulfide, the cage segment 21 can be reduced in weight, and can be self-lubricated and have low friction. Thus, the cage segment 21 excellent in corrosion resistance, quietness and the like can be obtained. Moreover, according to these synthetic resins, since the cage segment 21 can be manufactured by injection molding, it is possible to manufacture at a lower cost by mass production.
  • a synthetic resin such as aromatic nylon, polyetheretherketone, or polyphenylene sulfide
  • the projections 5 and the guides 6 formed on the pillars 1 in each pocket 3 are formed along the rolling surfaces of the tapered rollers 7 disposed between the outer ring raceway surface 70 and the inner ring raceway surface 80. By doing so, the tapered roller 7 can be reliably guided.
  • the cage segment 31 constituting the split cage of the rolling bearing according to the second embodiment is the first embodiment except that the cage segment 31 includes a protruding portion 9 projecting in the circumferential direction from the circumferential end surface 1d of the cage segment 31. It is the same as the cage segment 21 in the form. Accordingly, corresponding elements are denoted by common reference numerals and numbers, and description of common structures is omitted.
  • the protrusions that protrude from the circumferential end surfaces 1 d and 1 d of the cage segment 31 outward in the circumferential direction are continuous from the axially outer end surfaces 2 d of the pair of side plate portions 2 and 2. 9, 9 are formed.
  • the projecting portion circumferential end faces 9a and 9a facing each other in the circumferential direction in the neighboring cage segments 31 and 31 are abutted and contacted.
  • the projecting portion circumferential end faces 9a, 9a of each cage segment 31 are formed so as to form a predetermined inclination angle F from the radially outer side to the inner side according to the number of cage divisions. ing.
  • the protrusion part circumferential direction end surfaces 9a and 9a of the cage segment 31 have a predetermined inclination from the one side in the axial direction toward the other side according to the number of cage divisions and the shape of the cage. It is formed so as to form an angle G.
  • the cage segments 31 and 31 are butted in the circumferential direction and combined in series, whereby a substantially polygonal truncated cone shaped cage 20 can be configured.
  • the protruding portion 9 has a protruding portion axially inner end surface 9b continuous from the protruding portion circumferential end surface 9a to the circumferential end surface 1d of the cage segment 31.
  • the protruding portion axially inner end surface 9b is formed so as to be positioned on the axially inner side of the axially inner end surface 2c of the side plate portion 2, whereby the tapered roller 7 in the pocket 3 collides with the column portion 1.
  • the stress that may occur at the corners of the pocket 3 can be relieved by the protrusions 9.
  • protrusion part axial direction inner side end surface 9b is diagonally formed with respect to the circumferential direction end surface 1d of the holder
  • the present invention is not limited to the above-described embodiment, and can be changed or improved as appropriate.
  • the tapered roller bearing having the split type cage has been described.
  • the present invention can also be applied to the case of assembling the cylindrical roller bearing having the split type cage. 1a and the protrusion part circumferential direction end surface 9a will incline only toward radial direction.
  • the number of cage segments 21 and 31 and the number of pockets 3 formed in each cage segment 21 and 31 can be appropriately determined according to the dimensions and application of the rolling bearing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

La cage (20) du roulement selon l'invention est formée par le raccordement de multiples segments de cage (21) en série dans la direction circonférentielle et présente une forme de cylindre sensiblement polygonale ou une forme de cylindre tronconique sensiblement polygonale. La différence entre la valeur désignée pour la dimension circonférentielle (H) des multiples segments de cage (21) et la longueur réelle à une température normale est inférieure ou égale à 0,075%. Les sections de pilier (1) sont dotées de guides (6) permettant d'empêcher la chute de l'élément de roulement vers l'intérieur dans la direction radiale et de guider l'élément de roulement. Des espaces, qui permettent le déplacement des segments de cage (21) dans la direction du diamètre, sont formés entre les guides (6) et les surfaces de roulement des rouleaux coniques (7).
PCT/JP2013/084232 2012-12-21 2013-12-20 Roulement WO2014098212A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380008723.XA CN104105893A (zh) 2012-12-21 2013-12-20 滚动轴承
DE212013000259.9U DE212013000259U1 (de) 2012-12-21 2013-12-20 Wälzlager

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2012280248 2012-12-21
JP2012-280248 2012-12-21
JP2013257136A JP2014139474A (ja) 2012-12-21 2013-12-12 転がり軸受
JP2013-257136 2013-12-12

Publications (1)

Publication Number Publication Date
WO2014098212A1 true WO2014098212A1 (fr) 2014-06-26

Family

ID=50978528

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/084232 WO2014098212A1 (fr) 2012-12-21 2013-12-20 Roulement

Country Status (4)

Country Link
JP (1) JP2014139474A (fr)
CN (1) CN104105893A (fr)
DE (1) DE212013000259U1 (fr)
WO (1) WO2014098212A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105317842A (zh) * 2014-08-01 2016-02-10 株式会社捷太格特 滚子轴承
US10378580B2 (en) 2015-04-10 2019-08-13 Ntn Corporation Tapered roller bearing
CN110878798A (zh) * 2019-12-27 2020-03-13 瓦房店轴承集团国家轴承工程技术研究中心有限公司 端面带角度坡结构的保持架

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CN104154122B (zh) * 2014-08-08 2016-08-17 浙江天马轴承有限公司 一种圆柱滚子轴承的保持架
JP6565570B2 (ja) * 2015-10-08 2019-08-28 中西金属工業株式会社 外輪案内樹脂保持器及び射出成形用金型、並びに外輪案内樹脂保持器の製造方法
CN108361281B (zh) * 2017-01-26 2021-01-01 斯凯孚公司 保持架分段、分段式保持架和轴承
DE102017125700A1 (de) * 2017-11-03 2019-05-09 Schaeffler Technologies AG & Co. KG Wälzlagerkäfig, Verfahren zur Herstellung eines Wälzlagerkäfigs und Verwendung eines Schiebers
JP7271087B2 (ja) * 2018-03-28 2023-05-11 Ntn株式会社 円すいころ軸受
US20240167513A1 (en) * 2021-04-16 2024-05-23 The Timken Company Skew limiting bearing cage
WO2024106182A1 (fr) * 2022-11-18 2024-05-23 Ntn株式会社 Palier à roulement

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JP2009537003A (ja) * 2006-05-17 2009-10-22 シエフレル・コマンデイトゲゼルシヤフト 転がり軸受の保持器用保持器セグメント
JP2008232310A (ja) * 2007-03-21 2008-10-02 Jtekt Corp ころ軸受
JP2009097525A (ja) * 2007-10-12 2009-05-07 Nsk Ltd 保持器付き転がり軸受
JP2011185321A (ja) * 2010-03-05 2011-09-22 Ntn Corp 円すいころ軸受
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105317842A (zh) * 2014-08-01 2016-02-10 株式会社捷太格特 滚子轴承
US10378580B2 (en) 2015-04-10 2019-08-13 Ntn Corporation Tapered roller bearing
CN110878798A (zh) * 2019-12-27 2020-03-13 瓦房店轴承集团国家轴承工程技术研究中心有限公司 端面带角度坡结构的保持架

Also Published As

Publication number Publication date
DE212013000259U1 (de) 2015-07-24
CN104105893A (zh) 2014-10-15
JP2014139474A (ja) 2014-07-31

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