WO2019240059A1 - Roulement à rouleaux à alignement automatique - Google Patents

Roulement à rouleaux à alignement automatique Download PDF

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Publication number
WO2019240059A1
WO2019240059A1 PCT/JP2019/022864 JP2019022864W WO2019240059A1 WO 2019240059 A1 WO2019240059 A1 WO 2019240059A1 JP 2019022864 W JP2019022864 W JP 2019022864W WO 2019240059 A1 WO2019240059 A1 WO 2019240059A1
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WO
WIPO (PCT)
Prior art keywords
flange
shield plate
annular
cage
self
Prior art date
Application number
PCT/JP2019/022864
Other languages
English (en)
Japanese (ja)
Inventor
幹隆 佐波
Original Assignee
Ntn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 Ntn株式会社 filed Critical Ntn株式会社
Publication of WO2019240059A1 publication Critical patent/WO2019240059A1/fr

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    • 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
    • F16C19/24—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 radial load mainly
    • F16C19/28—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 radial load mainly with two or more rows of 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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • 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
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings

Definitions

  • This invention relates to a self-aligning roller bearing.
  • Self-aligning roller bearings are a type of roller bearing that mainly receives a radial load, have a predetermined alignment property, and are used in industrial machines that support relatively large loads.
  • a spherical roller bearing includes an inner ring having two rows of raceways, an outer ring having a spherical raceway, two rows of rollers interposed between the inner race and the outer race, and a cage that holds the rollers.
  • a self-aligning roller bearing disclosed in Patent Document 2 includes an inner ring having flanges at both ends of the outer periphery, and a comb-shaped cage that holds two rows of rollers, and a plurality of comb teeth formed on the cage.
  • the tip end surface of the columnar column and the seal are fastened with a plurality of screw members.
  • the self-aligning roller bearing of Patent Document 1 includes a seal that is press-fitted into the inner peripheral end of the outer ring, a clearance gauge cannot be inserted between the spherical raceways of the outer ring when in use. It is conceivable to attach the seal to the outer ring after measuring the internal clearance of the bearing. However, the seal is press-fitted into the outer ring in a state of use arranged between the shaft and the housing, and the work is difficult.
  • the self-aligning roller bearing of Patent Document 2 employs a mounting structure in which the seal and the cage are fastened with a screw member, the clearance gauge is placed between the spherical raceway of the outer ring with the seal separated from the cage. After inserting and measuring the internal clearance of the bearing, it is possible to screw the seal and cage.
  • the self-aligning roller bearing of Patent Document 2 includes a comb-shaped cage, the rollers in each row are held in a state where the inner ring and the cage intersect each other by 90 ° with respect to the outer ring when the bearing is assembled. It is necessary to insert it into the vessel, and the assembling property of the bearing is deteriorated. Moreover, since it is the attachment structure which fastens a seal
  • the problem to be solved by the present invention is to improve the assemblability of the self-aligning roller bearing, and to prevent foreign matter from entering the bearing by the annular member attached to the cage. It is to improve the mounting accuracy of the bearing and to measure the internal clearance of the bearing.
  • the present invention provides an inner ring having two rows of raceways, an outer race having a spherical raceway, two rows of rollers interposed between the inner race and the outer race, and a holding for holding the rollers.
  • a self-aligning roller bearing comprising a cage, further comprising an annular shield plate attached to the cage, wherein the cage is positioned on the center side of the inner ring with respect to the roller; and From the metal plate which integrally has the 2nd annular part located in the opposite side to the 1st annular part to the roller concerned, and a plurality of pillar parts which divide between the 1st annular part and the 2nd annular part.
  • the roller is accommodated between columns adjacent to each other in the circumferential direction, and the second annular portion has a flange protruding toward the inner ring side from the column over the entire circumference in the circumferential direction,
  • the shield plate is attached to the second annular portion, and the shield plate A metal plate having a projecting portion facing the gap between the second annular portion and the outer ring, and a back side surface contacting the flange over the entire circumference, and the projecting portion follows the spherical track.
  • the configuration provided with a smaller diameter than the phantom spherical surface included was adopted.
  • the shield plate as the annular member is provided with a protruding portion facing the gap between the second annular portion and the outer ring, and the gap between the shield plate and the outer ring is provided. It can be narrowed at the protruding portion, and foreign matter can be prevented from entering through this gap.
  • the shield plate has a back side surface that is in contact with the flange of the second annular portion over the entire circumference, the contact area between the shield plate and the second annular portion is widened, and the accuracy of attaching the shield plate is improved. can do.
  • the projecting part of the shield plate is provided with a smaller diameter than the virtual spherical surface including the spherical raceway of the outer ring, the clearance gauge can be removed from the gap between the projecting part and the outer ring even when the shield plate is attached to the cage. It is possible to insert and measure the bearing internal clearance.
  • the front annular side surface of the retainer that overlaps the back side surface of the shield plate in the radial range extending from the extension of the central axis of the roller to the inner peripheral side of the flange, and the inner periphery of the flange It is good to have the back side surface inclined toward the side which approaches the roller toward.
  • the back side surface of the second annular portion and the back side surface of the shield plate overlap in a wide radial range, the back side surface of the second annular portion is widened while increasing the area in which these both surfaces make contact over the entire circumference.
  • the thickness of the inner peripheral side of the flange can be increased and the strength of the flange can be increased.
  • the shield plate has a locking portion that is hooked in the radial direction and the axial direction at an inner end portion of the flange, and the shield plate is attached to the flange by a hook between the locking portion and the inner end portion of the flange. It should be attached. In this way, since the shield plate is attached on the inner periphery of the flange, the shield plate and the flange can be brought into contact in a wide radial range, and a screw member is not used for attaching the shield plate. That's it.
  • the shield plate has a protrusion protruding in the axial direction from the back side surface
  • the flange of the retainer has a fitting opening portion that fits into the protrusion
  • the shield plate It is good to be attached to the flange by fitting the projection and the fitting opening. If it does in this way, it will not be necessary to use a screw member for attachment of a shield board.
  • the shield plate may be bonded or welded to the flange of the cage. If it does in this way, it will not be necessary to use a screw member for attachment of a shield board.
  • the present invention improves the assemblability of the self-aligning roller bearing by adopting the above-described configuration, and prevents the intrusion of foreign matter into the bearing by the annular member attached to the cage.
  • the mounting accuracy can be improved and the bearing internal clearance can be measured.
  • Sectional drawing which shows the self-aligning roller bearing which concerns on 1st embodiment of this invention.
  • the figure which shows the assembly process of the self-aligning roller bearing of FIG. The figure which shows the assembly process of the continuation of FIG.
  • Sectional drawing which shows the example which welded the shield board of FIG. 1 to the holder
  • retainer Sectional drawing which shows the self-aligning roller bearing which concerns on 2nd embodiment of this invention.
  • Sectional drawing which shows the self-aligning roller bearing which concerns on 3rd embodiment of this invention.
  • a self-aligning roller bearing according to a first embodiment as an example of the present invention will be described with reference to FIGS. 1 to 5 of the attached drawings.
  • the self-aligning roller bearing shown in FIG. 1 is disposed between an inner ring 10 having two rows of raceways 11, an outer race 20 having a spherical raceway 21, and a raceway 11 of the inner race 10 and a spherical raceway 21 of the outer race 20.
  • Two rows of rollers 30, a pair of cages 40 that hold the rollers 30 in each row, and an annular shield plate 50 attached to the cage 40 are provided.
  • axial direction the direction along the bearing center axis, which is the center of rotation of the spherical roller bearing
  • radial direction The direction perpendicular to the bearing central axis
  • circumferential direction around the bearing central axis is referred to as “circumferential direction”.
  • the axial direction corresponds to the horizontal direction in FIG. 1, and the radial direction corresponds to the vertical direction in FIG.
  • the inner ring 10 is composed of an annular bearing part having a pair of raceways 11 in two rows on the outer peripheral side.
  • the outer ring 20 is composed of an annular bearing component having a single-row spherical raceway 21 centered on the bearing central axis on the inner peripheral side.
  • the first row of rollers 30 is interposed between the first track 11 and the spherical track 21, and the second row of rollers 30 is interposed between the second track 11 and the spherical track 21.
  • Roller 30 is a convex roller.
  • the roller 30 has a spherical rolling surface 31.
  • Each of the track 11 and the spherical track 21 is a curved surface that contacts the rolling surface 31 at one point.
  • the rolling surfaces 31 of the two rows of rollers 30 roll between the two rows of raceways 11 and the spherical raceway 21 so that predetermined alignment is exhibited.
  • the outer peripheral end portion from the track 11 to the chamfered portion closest to the track 11 is provided with a smaller diameter than the track 11.
  • the outer periphery central portion located between the two rows of tracks 11 is formed in a cylindrical surface shape that is continuous with the entire circumference in the circumferential direction and extends along the axial direction.
  • the outer diameter (maximum outer diameter) of the inner ring 10 is defined at the center of the outer periphery of the inner ring 10.
  • the skew behavior of the roller 30 is suppressed by the abutment between the pair of cages 40.
  • the cage 40 is composed of an annular bearing part that keeps the circumferential distance between the rollers 30 of the row of rollers 30 uniform (see also FIG. 2).
  • the cage 40 has a so-called cage shape. That is, the retainer 40 is a first annular portion 41 positioned on the center side of the inner ring 10 with respect to the row of rollers 30 and a second annular portion positioned on the opposite side of the first annular portion 41 with respect to the row of rollers 30. It consists of the metal plate which integrally has the annular part 42 and the some pillar part 43 which divides between the 1st annular part 41 and the 2nd annular part 42. As shown in FIG.
  • the rollers 30 are accommodated in pockets (spaces) between column portions 43 adjacent in the circumferential direction.
  • the column portion 43 has a circumferential end surface that can come into contact with the rolling surface 31 on the outer ring 20 side of the center axis Cr of the roller 30, and the outer ring 20 of the roller 30 is brought into contact with the circumferential end surface and the rolling surface 31.
  • the shape can be prevented from falling off to the side.
  • the second annular portion 42 has a flange 44 projecting toward the inner ring 10 side from the column portion 43 over the entire circumference in the circumferential direction, and a surface along the radial direction from the extension of the central axis Cr of the roller 30 to the inner periphery of the flange 44. It has a side surface 45 and a back side surface 46 inclined toward the side approaching the roller 30 toward the inner periphery of the flange 44.
  • the inner periphery of the flange 44 is in a position facing the chamfered portion of the rolling surface 31 of the roller 30 in the axial direction. For this reason, the clearance between the flange 44 and the outer peripheral end of the inner ring 10 is provided to be slightly smaller than the guide clearance between the cages 40 and 30.
  • the front side surface 45 of the second annular portion 42 is in a certain radial range over the entire circumference.
  • the back side surface 46 of the second annular portion 42 defines the thickness of the flange 44 together with the front side surface 45.
  • the inner end of the back side surface 46 is located on the inner periphery of the flange 44.
  • the back side surface 46 has a constant inclination angle with respect to the radial direction.
  • the retainer 40 is guided in the radial direction by contact between the flange 44 and the outer peripheral end of the inner ring 10.
  • the entire cage 40 is formed by pressing a metal plate.
  • the metal plate include a steel plate.
  • the shield plate 50 is attached to the flange 44.
  • the entire shield plate 50 has an annular plate shape along the radial direction.
  • the shield plate 50 includes a protruding portion 51 that faces the gap g between the second annular portion 42 and the outer ring 20, and a back side surface 52 that contacts the flange 44 over the entire circumference.
  • the gap g is a radial gap formed between the second annular portion 42 and the inner periphery of the outer ring 20.
  • the protrusion 51 has a center on the bearing central axis and is provided with a smaller diameter than the virtual spherical surface S including the spherical raceway 21. That is, the protruding portion 51 is arranged so as not to contact the outer ring 20 and to intersect the phantom spherical surface S.
  • the back side surface 52 of the shield plate 50 is formed in an annular surface shape along the radial direction.
  • the back side surface 52 overlaps the front side surface 45 of the second annular portion 42 in the axial direction in a certain radial range over the entire circumference in the circumferential direction.
  • a contact range in which the rear side surface 52 of the shield plate 50 and the front side surface 45 of the second annular portion 42 overlap in the axial direction extends from the extension of the central axis Cr of the roller 30 to the inner peripheral side of the flange 44 in the radial direction.
  • the radial width L 1 of the contact range is larger than the radial length L 2 of the protrusion 51 and has a sufficient width to stabilize the posture of the shield plate 50.
  • the shield plate 50 is attached to the second annular portion 42 by bonding the back side surface 52 and the front side surface 45 of the second annular portion 42.
  • the entire shield plate 50 is made of resin.
  • the shield plate may be made of a metal plate and formed by pressing.
  • FIGS. 1 The assembly process of the self-aligning roller bearing according to the embodiment is shown in FIGS.
  • the inner ring 10 and the cage 40 are arranged coaxially, and the majority of the rollers 30 in one row are accommodated between the pillar portions 43 of the cage 40, so that these rollers 30 are retained in the cage 40.
  • the retainer 40 and the multiple rollers 30 To form an assembly of the inner ring 10, the retainer 40 and the multiple rollers 30.
  • the assembly can be easily inserted into the outer ring 20 in a posture in which the central axis of the assembly is orthogonal to the central axis of the outer ring 20.
  • the number of rollers 30 in a row is 17, but in general it is 5 or more.
  • the assembly is further rotated inside the outer ring 20, so that the above-mentioned diagonally arranged rollers can be inserted between the pillar portions 43 of the retainer 40.
  • the entire roller 30 is held by the cage 40.
  • the outer ring 20 and the assembly are arranged coaxially, the shield plate 50 and the cage 40 are arranged coaxially, the back side surface 52 of the shield plate 50 and the front side surface 45 of the cage 40. And the shield plate 50 is attached to the cage 40.
  • an adhesive may be applied in advance to the back side surface 52 of the shield plate 50 and overlapped with the front side surface 45 of the cage 40.
  • Welding can also be employed as means for attaching the shield plate 50.
  • the shield plate 50 can be attached to the flange 44 by welding the inner periphery of the shield plate 50 to the vicinity of the inner periphery of the flange 44.
  • the shield plate 50 When the shield plate 50 is made of resin, the shield plate 50 can be welded by melting and solidifying only the shield plate 50 by laser welding or the like. In this welding, the physical van der Waals force that appears when molecules / particles approach each other at the interface between the shield plate 50 and the flange 44, and the molten resin enters the concave surface or gap of the metal, and then solidifies. Resin and metal are joined by the mechanical anchor effect, and the combined action of the chemical bond where the metal oxide film and the resin are molecularly and atomically joined. Various combinations of laser-weldable resin and metal can be selected. Examples of the resin include plastics such as polyamide (PA), polycarbonate (PC), and polyethylene terephthalate (PET). Examples of the metal include austenite. Stainless steel (for example, SUS304), steel (for example, SPCC), pure titanium, aluminum alloy, and the like.
  • PA polyamide
  • PC polycarbonate
  • PET polyethylene terephthalate
  • the metal include austenite.
  • the self-aligning roller bearing according to the first embodiment is as described above, and as shown in FIGS. 1 and 2, a so-called cage-shaped cage 40 is employed. It is possible to prevent the rollers 30 from falling off with the track 11 of the first. For this reason, it is not necessary to insert all of the rollers 30 in one row into the cage 40 in a state in which the inner ring 10 and the cage 40 intersect with the outer ring 20 by 90 ° when the bearing is assembled. Thereby, the self-aligning roller bearing which concerns on 1st embodiment can improve the assembly property of a bearing.
  • the second annular portion 42 of the cage 40 has a flange 44 that protrudes toward the inner ring 10 side from the column portion 43 over the entire circumference in the circumferential direction.
  • the gap between the bicyclic portion 42 and the inner ring 10 can be narrowed by the flange 44, and external foreign matter can be prevented from entering the bearing through the gap.
  • the self-aligning roller bearing according to the first embodiment includes an annular shield plate 50 attached to the second annular portion 42 of the cage 40, and the shield plate 50 is between the second annular portion 42 and the outer ring 20. Since the protrusion 51 is opposed to the gap g, the gap between the shield plate 50 and the outer ring 20 is narrowed by the protrusion 51 while the metal plate cage 40 is provided, and foreign matter enters from the gap. Can also be prevented.
  • the self-aligning roller bearing according to the first embodiment has the back side surface 52 in which the shield plate 50 is in contact with the flange 44 of the second annular portion 42 of the cage 40 over the entire circumference, the shield plate 50, the contact area between the second annular portion 42 can be widened, and the mounting accuracy of the shield plate 50 can be improved.
  • the shield plate 50 since the protruding portion 51 of the shield plate 50 is provided with a smaller diameter than the virtual spherical surface S including the spherical raceway 21 of the outer ring 20, the shield plate 50 is the cage. Even in the state of use attached to 40, a clearance gauge (not shown) can be inserted from the gap between the protrusion 51 and the outer ring 20 to measure the bearing internal clearance.
  • the shield plate has a radial range in which the second annular portion 42 of the cage 40 extends from the extension of the central axis Cr of the roller 30 to the inner peripheral side of the flange 44. 50, the front side surface 45 that overlaps the back side surface 52 and the back side surface 46 that is inclined toward the inner periphery of the flange 44 toward the side closer to the roller 30, and thus the front side surface 45 of the second annular portion 42 and the shield plate 50.
  • the back side surface 52 of the second annular portion 42 is inclined by the inclination of the back side surface 46 while the area where the both surfaces 45 and 52 are in contact with each other over the entire circumference in the circumferential direction is widened.
  • the thickness of the circumferential side can be increased and the strength of the flange 44 can be increased.
  • the shield plate 50 is bonded or welded to the flange 44 of the cage 40, it is not necessary to use a screw member for attaching the shield plate 50.
  • the attachment structure of the cage is not limited to adhesion or welding, and an attachment structure by locking the shield plate and the cage can be employed.
  • a second embodiment as an example thereof will be described with reference to FIG. In the following, only differences from the first embodiment will be described.
  • the shield plate 60 of the second embodiment has a locking portion 61 that is hooked in the radial direction and the axial direction on the inner end portion 72 of the flange 71 of the cage 70.
  • the locking portion 61 forms a part of the inner periphery of the shield plate 60 and is formed in a hook shape that bends toward the roller 30 in a cross section along the radial direction.
  • the back side surface 62 of the shield plate 60 is continuous with the locking portion 61.
  • the inner end 72 of the flange 71 is a notch that forms a part of the inner periphery of the flange 71.
  • the inner end portion 72 is recessed in the outer ring 20 side as compared with the inner peripheral portion 75 that passes between the front side surface 73 and the rear side surface 74 of the second annular portion in the axial direction and defines the minimum inner diameter of the flange 71.
  • the edge portion that continues to the front side surface 73 is formed in a convex shape that fits inside the locking portion 61.
  • the shield plate 60 is engaged with the corresponding inner end portion 72 in the radial direction and the axial direction by pushing each locking portion 61 into the corresponding inner end portion 72.
  • the shield plate 60 is attached to the flange 71 by hooking all the locking portions 61 to the corresponding inner end portions 72.
  • each locking portion 61 sandwiches the corresponding inner end 72 in the axial direction, thereby preventing the shield plate 60 and the flange 71 from being separated in the axial direction, and corresponding to each locking portion 61.
  • the shield plate 60 Due to the radial engagement of the inner end 72, the shield plate 60 is arranged at a predetermined coaxiality with the retainer 70, and the engagement of the inner ends 72 corresponding to the respective locking portions 61 in the circumferential direction is arranged. As a result, the shield plate 60 is prevented from rotating in the circumferential direction with respect to the flange 71.
  • the self-aligning roller bearing according to the second embodiment attaches the shield plate 60 using the inner periphery of the flange 71, the shield plate 60 and the flange 71 are brought into contact in a wide radial range. In addition, it is not necessary to use a screw member for attaching the shield plate 60.
  • the locking portions 61 are formed in a distributed manner in the circumferential direction, but the locking portions may be formed in the entire circumferential direction to simplify the inner peripheral shape of the flange.
  • the locking portions 61 are formed in a distributed manner as in the illustrated example, the locking portions 61 can be easily pushed into the flange 71, and the shield plate 60 can be prevented from being deformed.
  • a third embodiment as another example of the mounting structure by locking the shield plate and the cage will be described with reference to FIG.
  • the shield plate 80 of the third embodiment has a protrusion 82 protruding in the axial direction from the back side surface 81 of the shield plate 80.
  • the flange 91 of the cage 90 has a fitting opening 92 that fits into the protrusion 82.
  • the projecting portion 82 has a round shaft shape.
  • the fitting port 92 has a round hole shape that penetrates the flange 91 in the axial direction.
  • the protruding portion 82 has an axial length that can be accommodated in the fitting opening portion 92, and does not protrude in the axial direction from the rear side surface 93 of the second annular portion.
  • the shield plate 80 is arranged coaxially with the retainer 90 so that each projection 82 faces the corresponding fitting port 92 in the axial direction, and the respective projections 82 are simultaneously press-fitted into the corresponding fitting port 92.
  • the flange 91 is attached.
  • the shield plate 80 and the flange 91 are prevented from being separated in the axial direction by fitting with a tightening margin between each projection 82 and the corresponding fitting opening 92, and the shield plate 80 is held in the cage. 90 and a predetermined coaxial degree, and the shield plate 80 is prevented from rotating with respect to the flange 91 in the circumferential direction.
  • the shield plate 80 is attached to the flange 91 by fitting the projection 82 of the shield plate 80 and the fitting opening 92 of the flange 91. It is not necessary to use a screw member for attaching the plate 80.
  • the protruding portion 82 has a round shaft shape
  • the fitting port portion 92 has a through hole and a round hole shape
  • the shape of the protruding portion and the fitting port portion is not particularly limited.
  • the fitting port portion may be a long hole shape that is long in the circumferential direction, and the protrusion portion may be changed to an arc-shaped shaft portion that extends in the circumferential direction.
  • you may make a fitting port part into a non-through-hole shape.
  • the fitting port portion may have a circumferential groove shape extending in the entire circumferential direction, and the protruding portion may protrude in an annular shape.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)
  • Support Of The Bearing (AREA)

Abstract

La présente invention aborde le problème lié à l'amélioration de l'aptitude à l'assemblage d'un roulement d'une manière telle que, à l'aide d'un élément de retenue en forme de cage (40) constitué d'une plaque métallique, un ensemble constitué d'une bague intérieure (10), d'une pluralité de rouleaux (30), et de l'élément de retenue (40) peut être inséré à l'intérieur d'une bague extérieure (20). Une substance étrangère est empêchée d'entrer au moyen d'une bride (44) de l'élément de retenue (40) et d'une section saillante (51) d'une plaque de protection annulaire (50) qui doit être fixée à la bride (44). La précision de fixation de la plaque de protection (50) est améliorée en amenant une surface arrière (52) de la plaque de protection (50) et la bride (44) en contact complet le long des circonférences. Une jauge d'épaisseur peut être insérée entre un chemin de roulement sphérique (21) et le rouleau (30) en faisant en sorte que la section saillante (51) présente un diamètre plus petit qu'une surface sphérique imaginaire (S) comprenant le chemin de roulement sphérique (21).
PCT/JP2019/022864 2018-06-14 2019-06-10 Roulement à rouleaux à alignement automatique WO2019240059A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018113622A JP2019215058A (ja) 2018-06-14 2018-06-14 自動調心ころ軸受
JP2018-113622 2018-06-14

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WO2019240059A1 true WO2019240059A1 (fr) 2019-12-19

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008014768A2 (fr) * 2006-08-02 2008-02-07 Schaeffler Kg Palier à roulement étanche
JP2011058508A (ja) * 2009-09-07 2011-03-24 Ntn Corp 密封型転がり軸受
EP2808570A1 (fr) * 2013-05-31 2014-12-03 NTN-SNR Roulements Roulement muni d'un système d'étanchéité
EP3029344A1 (fr) * 2014-12-01 2016-06-08 NTN-SNR Roulements Pièce et système d'étanchéité pour roulements, et roulement muni de tels pièces et systèmes
FR3052831A1 (fr) * 2016-06-20 2017-12-22 Ntn-Snr Roulements Procede d’etancheification d’un palier a roulement et palier a roulement ainsi obtenu

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008014768A2 (fr) * 2006-08-02 2008-02-07 Schaeffler Kg Palier à roulement étanche
JP2011058508A (ja) * 2009-09-07 2011-03-24 Ntn Corp 密封型転がり軸受
EP2808570A1 (fr) * 2013-05-31 2014-12-03 NTN-SNR Roulements Roulement muni d'un système d'étanchéité
EP3029344A1 (fr) * 2014-12-01 2016-06-08 NTN-SNR Roulements Pièce et système d'étanchéité pour roulements, et roulement muni de tels pièces et systèmes
FR3052831A1 (fr) * 2016-06-20 2017-12-22 Ntn-Snr Roulements Procede d’etancheification d’un palier a roulement et palier a roulement ainsi obtenu

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