WO2020135902A1 - Cage à roulement à billes - Google Patents

Cage à roulement à billes Download PDF

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Publication number
WO2020135902A1
WO2020135902A1 PCT/DE2019/101079 DE2019101079W WO2020135902A1 WO 2020135902 A1 WO2020135902 A1 WO 2020135902A1 DE 2019101079 W DE2019101079 W DE 2019101079W WO 2020135902 A1 WO2020135902 A1 WO 2020135902A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
pocket
ball bearing
curvature
sides
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2019/101079
Other languages
German (de)
English (en)
Inventor
Jaehyun Moon
Sangsu SEO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to DE112019007966.2T priority Critical patent/DE112019007966A5/de
Publication of WO2020135902A1 publication Critical patent/WO2020135902A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/41—Ball cages comb-shaped
    • F16C33/418—Details of individual pockets, e.g. shape or ball 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
    • F16C33/38—Ball cages
    • F16C33/3831—Ball cages with hybrid structure, i.e. with parts made of distinct materials
    • 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
    • F16C33/38—Ball cages
    • F16C33/41—Ball cages comb-shaped
    • 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
    • F16C33/38—Ball cages
    • F16C33/42—Ball cages made from wire or sheet metal strips
    • F16C33/422—Ball cages made from wire or sheet metal strips made from sheet metal
    • F16C33/427—Ball cages made from wire or sheet metal strips made from sheet metal from two parts, e.g. ribbon cages with two corrugated annular parts
    • 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
    • F16C33/38—Ball cages
    • F16C33/44—Selection of substances

Definitions

  • the present invention relates to a ball bearing cage.
  • a ball bearing cage which has a high degree of rigidity with regard to centrifugal forces which occur in bearing operation, while at the same time maintaining the lubricity and effective heat transfer taking place.
  • Bearings can be roughly divided into the subcategories of plain bearings and rolling bearings.
  • roller bearings are divided into ball bearings, tapered roller bearings and cylindrical roller bearings.
  • Ball bearings are bearings that use a ball as a rolling element that is positioned between the inner ring and the outer ring.
  • These bearings can again be divided into radial bearings and axial bearings.
  • radial bearings the direction of extension of the axis and the direction of loading are arranged at right angles to one another. At Axialla like, these directions run parallel to each other.
  • the radial ball bearing shown in FIG. 1 is known from KR 20-0410762 Y1 and conventionally consists of an inner ring (103), an outer ring (105), balls (107) and a cage (109).
  • the inner ring (103) and the outer ring (105) are ring-shaped, a plurality of balls (107) being inserted in the circumferential direction between the inner ring (103) and the outer ring (105) such that they are at a certain distance from one another.
  • the cage (109) is ring-shaped and ensures that the individual balls (107), which are positioned between the inner ring (103) and the outer ring (105), in a certain Distance to each other are arranged in the circumferential direction.
  • the cage (109) shown in FIG. 2 in accordance with KR 20-0410762 Y1 is a plastic snap cage which is equipped with an annular cage main body (112) and projections (114) which are on one side in the axial direction on the cage - Main body (1 12) are arranged, the above-mentioned pockets (111) being formed between the projections.
  • the cage (109) shown in FIG. 3 according to KR 10-1664766 B1 is a two-part sheet metal rivet cage which consists of two cage elements (109-1) which are uniformly shaped and connected to one another in the axial direction.
  • the cage elements (109-1) which form the two-part cage (109) are ring-shaped and consist of a plurality of concave pocket parts (109b) which are arranged at certain intervals in the circumferential direction and a plurality of connecting sections (109a) which be connected to the pocket parts (109b) on both sides.
  • the two cage elements (109-1) are connected to one another, with opposing pocket parts (109b) forming a pocket (111).
  • the cage (109) shown in FIG. 2 according to KR 20-0410762 Y1 has a smaller area surrounding the ball than the two-part cage according to KR 10-1664766 B1.
  • the main cage body (112) cannot adequately support the projections (114)
  • the projections (114) deform in the radial direction towards the outside in the case of flute speed rotations (from 18,000 rpm)
  • the ball (107) not being kept stable can result in noise or vibration and damage the projections (114).
  • the heat transfer is hindered because the part consists of a plastic material.
  • the object of the present invention is to solve the problems which exist in the conventional technique described above and to design a ball bearing cage in which the heat exchange and lubrication with lubricant are smooth, the rigidity is improved and which is also used at high speeds can be.
  • the present invention relates to a ball bearing cage consisting of a first cage element and a second cage element and used in a ball bearing, serving to ensure a uniform distance between the rolling elements.
  • a ball bearing cage is offered, which is characterized in that the first cage element consists of a material which has a higher stiffness than the second cage element; wherein the first cage element is ring-shaped and has a plurality of pocket parts which have a circumferential spacing from one another and form concave pocket surfaces in the axial direction on one side, and has a plurality of connecting sections which are positioned between the pocket parts and the two sides of which are connected to the Pocket parts are connected; wherein the second cage element is arranged between the pocket parts and has a second cage side, which together with the pocket surface forms a pocket on both sides in the circumferential direction for receiving the ball, the pocket part being located between.
  • the first cage element is made of metal and the second cage element is made of a synthetic resin material. At least part of the outside of the pocket part, which is the opposite side
  • the second cage elements are characterized in that they are connected to the individual connecting sections of the first cage element, where a plurality of second cage elements are attached.
  • the second cage element consists of a second cage main body which is equipped with a coupling which is continuous in the circumferential direction and into which the connecting section is inserted, and second cage extensions which are on both sides in the circumferential direction of the second cage main body in the axial direction project opposite to the pocket part and project in the circumferential direction so that they move away from each other; the distance between the second cage extensions being formed by the adjacent second cage main bodies, between which there is a pocket part, in such a way that they come ever closer towards the end piece.
  • the connecting section is fastened to the pocket part via the connecting curvature and the connecting curvature is bent in the opposite direction to the pocket part and has a smaller radius of curvature than the pocket part.
  • the connecting curvature is exposed on the inside between the second cage main bodies, and the radius of curvature of the second cage side is formed larger than the radius of curvature of the connecting curvature, whereby a concave free space is formed between the connecting curve and the second side of the cage.
  • a first opening is formed on the connecting section and is continuous in the axial direction. Also on the second cage main body, at the position where the first opening is formed, a second opening is formed which is continuous in the axial direction. An opening is formed between the second cage extensions which is continuous in the axial direction.
  • the second cage main body is characterized in that in the direction in which the second cage extensions protrude, a chamfer is formed on both sides in the radial direction, it being formed such that its width in the radial direction continues to decrease in the direction of the end piece takes.
  • the ball bearing cage of the present invention has the advantage over the known ball bearing cages that its rigidity is higher than the centrifugal force, whereby use at high speed is possible. Because lubrication with lubricant runs smoothly and heat exchange is carried out effectively, the second cage member can be prevented from being deformed due to heat.
  • FIG. 1 shows a perspective partial sectional view of a ball bearing according to the prior art
  • FIG. 2 shows a perspective view of the known ball bearing cage according to FIG. 1
  • 3 shows a perspective view of a further embodiment of a ball bearing cage of the prior art
  • FIG. 4 shows a perspective view of part of a ball bearing with a ball bearing cage designed according to the invention
  • FIG. 5 shows a perspective view of the first cage element of the ball bearing cage designed according to the invention
  • FIG. 6 shows a perspective view of the second cage element of the ball bearing cage designed according to the invention
  • FIG. 7 shows a perspective view of a cage pocket of the ball bearing cage designed according to the invention
  • FIG. 8 shows a side view of a cage pocket of the ball bearing cage formed according to the invention
  • FIG. 9 shows a sectional view through the ball bearing cage designed according to the invention along the line A-A in FIG. 4.
  • the ball bearing cage (200) of the present invention consists of a first cage member (210) and a plurality of second cage members (220).
  • the first cage element (210) is annular and comprises a plurality of pocket parts (211) and connecting sections (213).
  • the first cage element (210) basically consists of a material that has a higher rigidity than the second cage element (220).
  • the first cage element (210) consists of metal.
  • the pocket parts (211) are arranged circumferentially at a distance from one another.
  • the pocket parts (21 1) form concave pocket surfaces (215) in the axial direction, which are in contact with the balls.
  • connection sections (213) are arranged between the pocket parts (211) and both ends of which are connected to the pocket part (211) via connecting bends (217).
  • connection curvature (217) bends in the opposite direction to the pocket part (211).
  • connection curvature has a smaller radius of curvature than the pocket part (211).
  • a first opening (219) is formed in the connecting section (213), which is continuous in the axial direction and is arranged at a distance from the connecting bend (217).
  • the above-mentioned second cage elements (220) are arranged between the adjacent pocket parts (211).
  • the second cage elements (220) are fastened to the individual connecting sections (213) of the first cage element (210), a plurality of second cage elements being attached.
  • part of the outside (211 a) of the pocket part which is the opposite side of the pocket surface (215), can be covered by the second cage element (220). At least part of the outside (211 a) of the pocket part is arranged so that it is exposed.
  • the second cage element (220) is made of a synthetic resin material which contains graphite fibers PA6, PA66, PA6 or PA66.
  • the second cage element (220) is injection molded in one piece with the first cage element (210) as an insert.
  • the second cage element (220) consists of the second cage main body
  • the second cage main body (221) is arranged so that it closes the connecting section (213).
  • a coupling (222) is formed on the second cage main body (221). det, which is continuous in the circumferential direction.
  • the connecting section (213) is inserted in the coupling (222), the connecting section (213) being arranged such that it is enclosed.
  • a second opening (229) is formed, which is continuous in the axial direction. The inside diameter of the second opening (229) is larger than the inside diameter of the first opening (219).
  • first openings (219) and second openings (229) are formed in the ball bearing cage (200) of the present invention, the lubricant is conveyed.
  • the second cage element (220) can be injection molded in one piece with the first cage element (210) as an insert .
  • a second cage extension (223) is attached on both sides in the circumferential direction of the second cage main body (221).
  • the second cage extensions (223) protrude in the axial direction in the opposite direction to the pocket part (211), whereby they protrude in the circumferential direction so that they move away from each other.
  • the distance between the second cage extensions (223) of the adjacent second cage main body (221), between which there is a pocket part (211), is formed in such a way that they come closer and closer in the direction of the end piece.
  • a second cage side (225) is formed, which is opposite the second cage elements (220), which are located on both sides in the circumferential direction next to it, the pocket part (211) being between them.
  • Two opposite second cage sides (225) form, together with the pocket surface (215) of the pocket part (211) positioned therebetween, a pocket for receiving the ball.
  • the cage (200) of the present invention is equipped with the second cage guide member (223a), the effect is prevented in which the second cage extensions (223) by the centrifugal force of the cage (200), which is common with the ball in a flute speed rotation environment, radially deform toward the outside.
  • the connecting curvature (217) lies freely on the inside between the second cage main bodies (220).
  • the curvature radius of the second cage side (225) is formed larger than the radius of curvature of the connecting curvature (217), a concave free space (201) being formed between the connecting curvature (217) and the second cage side (225).
  • the formation of the free space (201) collects lubricant in the free space (201), whereby the ball can be supplied with lubricant smoothly.
  • a bevel (227) can be formed on both sides in the radial direction in a direction in which the second cage extensions (223) protrude.
  • the bevel (227) is formed with a shape whose width decreases in the radial direction towards the end piece more and more.
  • the opposite side of the bevel (227) is formed with a convexly curved shape, which becomes narrower towards the end piece in the radial direction.
  • the second cage main body (221) is formed with a bevel (227)
  • the second cage extensions (223) are supported on both sides in the circumferential direction, although the volume is not increased, and the deformation in the circumferential and radial directions of the second cage ver Extensions (223) is restricted and at the same time the flow of the lubricant is stimulated by the bevel (227).
  • the second cage member (220) hardly deforms at high speeds because the annular first cage member (210) made of metal restricts the deformation of the second cage member (220).
  • the bottom surface of the pocket which contacts the ball is formed by the first cage element (210), both sides in the circumferential direction of the pocket being formed by the second cage side (225) of the second cage element (220), and wherein the pocket part (211) has a shape that is not enclosed by the second cage element (220).
  • second cage elements (220) are used, but it is possible to attach them in one piece by connecting both ends in the circumferential direction of the second cage elements (220) with a thin synthetic resin cord, the cross section of which does not affect the heat transfer. As a result, no strands jam between the pocket and the ball, preventing the second cage member (220) from deforming due to heat.

Landscapes

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

Abstract

La présente invention concerne une cage à roulement à billes qui se compose d'un premier élément de cage (210) et d'un deuxième élément de cage (220) et qui sert à garantir une distance entre les éléments roulants. Conformément à l'invention, le premier élément de cage est constitué d'un matériau ayant une rigidité plus élevée que le deuxième élément de cage. Le premier élément de cage est de forme annulaire et comporte une pluralité de parties de poche, qui sont espacées les unes des autres dans la direction circonférentielle et forment, dans la direction axiale, des surfaces de poche concaves sur un côté, ainsi qu'une pluralité de portion de connexion qui sont positionnées entre les parties de poche et dont les deux côtés sont reliés aux parties de poche. Le deuxième élément de cage est positionné entre les parties de poche et comporte un deuxième côté de cage qui, conjointement avec la surface de poche, forme des deux côtés dans la direction circonférentielle une poche destinée à recevoir la bille, la partie de poche y étant interposée.
PCT/DE2019/101079 2018-12-27 2019-12-12 Cage à roulement à billes Ceased WO2020135902A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112019007966.2T DE112019007966A5 (de) 2018-12-27 2019-12-12 Kugellagerkäfig

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180170718A KR102075475B1 (ko) 2018-12-27 2018-12-27 볼 베어링용 케이지
KR10-2018-0170718 2018-12-27

Publications (1)

Publication Number Publication Date
WO2020135902A1 true WO2020135902A1 (fr) 2020-07-02

Family

ID=69468347

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2019/101079 Ceased WO2020135902A1 (fr) 2018-12-27 2019-12-12 Cage à roulement à billes

Country Status (3)

Country Link
KR (1) KR102075475B1 (fr)
DE (1) DE112019007966A5 (fr)
WO (1) WO2020135902A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE381942C (de) * 1917-12-10 1923-09-27 Schweinfurter Praecisions Kuge Scheibenkugellager
FR1198221A (fr) * 1957-06-11 1959-12-04 Skf Svenska Kullagerfab Ab Perfectionnements aux cages en matière plastique pour les corps de roulement des paliers à roulements
JPH109272A (ja) * 1996-06-19 1998-01-13 Koyo Seiko Co Ltd 転がり軸受用冠型保持器
KR200410762Y1 (ko) 2005-12-28 2006-03-08 에프에이지베어링코리아유한회사 볼베어링용 케이지 및 이를 구비한 볼베어링
JP2006161922A (ja) * 2004-12-06 2006-06-22 Nsk Ltd 冠形保持器
KR101664766B1 (ko) 2013-06-05 2016-10-12 안젤로 토마시 카노보 볼 베어링용 케이지
KR20170116270A (ko) * 2016-04-08 2017-10-19 주식회사 베어링아트 볼 베어링 케이지

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012102845A (ja) * 2010-11-12 2012-05-31 Ntn Corp 玉軸受用保持器および玉軸受
KR20150078455A (ko) 2013-12-30 2015-07-08 주식회사 베어링아트 볼 베어링 케이지

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE381942C (de) * 1917-12-10 1923-09-27 Schweinfurter Praecisions Kuge Scheibenkugellager
FR1198221A (fr) * 1957-06-11 1959-12-04 Skf Svenska Kullagerfab Ab Perfectionnements aux cages en matière plastique pour les corps de roulement des paliers à roulements
JPH109272A (ja) * 1996-06-19 1998-01-13 Koyo Seiko Co Ltd 転がり軸受用冠型保持器
JP2006161922A (ja) * 2004-12-06 2006-06-22 Nsk Ltd 冠形保持器
KR200410762Y1 (ko) 2005-12-28 2006-03-08 에프에이지베어링코리아유한회사 볼베어링용 케이지 및 이를 구비한 볼베어링
KR101664766B1 (ko) 2013-06-05 2016-10-12 안젤로 토마시 카노보 볼 베어링용 케이지
KR20170116270A (ko) * 2016-04-08 2017-10-19 주식회사 베어링아트 볼 베어링 케이지

Also Published As

Publication number Publication date
DE112019007966A5 (de) 2022-09-22
KR102075475B1 (ko) 2020-02-10

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