JP2015102184A - Conical roller bearing - Google Patents

Conical roller bearing Download PDF

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Publication number
JP2015102184A
JP2015102184A JP2013243561A JP2013243561A JP2015102184A JP 2015102184 A JP2015102184 A JP 2015102184A JP 2013243561 A JP2013243561 A JP 2013243561A JP 2013243561 A JP2013243561 A JP 2013243561A JP 2015102184 A JP2015102184 A JP 2015102184A
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Prior art keywords
inner ring
rolling
bearing
rolling surface
outer ring
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Pending
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JP2013243561A
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Japanese (ja)
Inventor
遼介 和田
Ryosuke Wada
遼介 和田
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NSK Ltd
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NSK Ltd
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Priority to JP2013243561A priority Critical patent/JP2015102184A/en
Publication of JP2015102184A publication Critical patent/JP2015102184A/en
Pending legal-status Critical Current

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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
    • F16C19/34—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
    • 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
    • F16C33/583—Details of specific parts of races
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/062—Dismounting of ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft

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

Abstract

PROBLEM TO BE SOLVED: To provide a bearing which is removed easily and in which axial load resistance capacity is improved.SOLUTION: A conical roller bearing includes: an inner ring having a rolling surface on an outer diameter surface; an outer ring having a rolling surface on an inner diameter surface; and a cylindrical rolling element for rotating and rolling between the rolling surface of the outer ring and the rolling surface of the inner ring. The inner ring and the outer ring relatively rotate in a concentric circular manner via the rolling element. At both ends of the rolling surface of the inner ring, a large flange and a small flange further protruding than the rolling surface are provided, and an engagement part is provided protruding toward the outside in a bearing radial direction over the circumferential direction at one of the large flange and the small flange. Thereby, the bearing becomes easy to remove, and axial load resistance capacity is improved.

Description

本発明は、円すいころ軸受に関する。   The present invention relates to a tapered roller bearing.

円すいころ軸受は、外径面に転動面を有する内輪と、内径面に転動面を有する外輪と、前記外輪の転動面と前記内輪の転動面間で回転転動する円筒状の転動体とを有しており、内輪と外輪とが前記転動体を介して同心円状に相対回転している。前記外輪及び前記内輪の転動面は軸受回転中心軸に対して傾斜して設けられている。また、前記外輪または前記内輪の少なくとも一方の転動面両端には、転動面より突出した大鍔、小鍔が設けられており、転動体を案内している。この様な構成の円すいころ軸受を、軸受回転中心軸方向から軸やハウジングに圧入した際、過大な圧入力によって軸受予圧が規定値より大きくなる可能性があった。この様な状態であると大鍔、小鍔、転動面と転動体との摺動抵抗が大きくなり、軸受の回転抵抗となる虞があった。そこで、軸やハウジング等に組付けた軸受を一旦引抜いて、再度予圧調整をする必要があった。そこで例えば特許文献１では、軸受を軸受回転中心軸方向に引抜くための工具を嵌合させる溝と凸部よりなる係合部を軸受に隣接して一体的に形成して軸受の引き抜きを可能としている。   The tapered roller bearing has an inner ring having a rolling surface on the outer diameter surface, an outer ring having a rolling surface on the inner diameter surface, and a cylindrical shape that rotates between the rolling surface of the outer ring and the rolling surface of the inner ring. The inner ring and the outer ring rotate relative to each other concentrically via the rolling element. The rolling surfaces of the outer ring and the inner ring are inclined with respect to the bearing rotation center axis. Further, at both ends of at least one rolling surface of the outer ring or the inner ring, large scissors and small scissors protruding from the rolling surface are provided to guide the rolling elements. When the tapered roller bearing having such a configuration is press-fitted into the shaft or the housing from the bearing rotation center axis direction, there is a possibility that the bearing preload becomes larger than the specified value due to excessive pressure input. In such a state, there is a possibility that the sliding resistance between the rolling surface and the rolling element becomes large, resulting in a rotational resistance of the bearing. Therefore, it has been necessary to pull out the bearing assembled to the shaft, the housing, etc., and adjust the preload again. Therefore, in Patent Document 1, for example, a groove for fitting a tool for pulling out the bearing in the direction of the rotation center of the bearing and an engaging portion made of a convex portion are integrally formed adjacent to the bearing so that the bearing can be pulled out. It is said.

特開２０１３−７９６８０JP2013-79680

しかし、特許文献１のように軸受引き抜き用係合部に溝を形成しているため、溝周辺が薄肉形状となっていた。このために圧入、引き抜き力の応力が溝周辺に集中して、係合部が変形する可能性があった。そして係合部の変形した箇所が、軸受外周面または軸受内周面から突出するため、軸やハウジングへの軸受の再嵌合に際して、再組立性が悪化する可能性が懸念さていた。   However, since the groove is formed in the bearing pull-out engaging portion as in Patent Document 1, the periphery of the groove has a thin shape. For this reason, there is a possibility that the stress of the press-fitting and pull-out force concentrates around the groove and the engaging portion is deformed. And since the location where the engaging part deform | transformed protrudes from a bearing outer peripheral surface or a bearing inner peripheral surface, at the time of the re-fitting of the bearing to a shaft or a housing, there existed a possibility that reassembly property may deteriorate.

本発明は、上述した課題に鑑みてなされたものであり、その目的は、軸又はハウジングから軸受の引き抜きを容易にし、引き抜き用係合部の変形を防止した円すいころ軸受を提供することにある。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a tapered roller bearing that facilitates pulling of the bearing from the shaft or housing and prevents deformation of the pulling engagement portion. .

そこで上記の課題を解決するために、外径面に転動面を有する内輪と、内径面に転動面を有する外輪と、前記外輪の転動面と前記内輪の転動面間で回転転動する円筒状の転動体とを有しており、内輪と外輪とが前記転動体を介して同心円状に相対回転するとともに、前記外輪及び前記内輪の転動面は前記内輪及び前記外輪の回転中心軸に対して傾斜して設けられ、前記内輪の前記転動面の両端には、転動面より突出した大鍔、小鍔が設けられている円すいころ軸受において、前記大鍔または前記小鍔のいずれかに突出した係合部が軸受円周方向にわたって設けられていることを特徴とする。   Therefore, in order to solve the above problems, an inner ring having a rolling surface on the outer diameter surface, an outer ring having a rolling surface on the inner diameter surface, and a rotational rotation between the rolling surface of the outer ring and the rolling surface of the inner ring. A cylindrical rolling element that moves, and an inner ring and an outer ring rotate concentrically relative to each other via the rolling element, and rolling surfaces of the outer ring and the inner ring are rotations of the inner ring and the outer ring. In a tapered roller bearing that is provided with an inclination with respect to a central axis and is provided with large and small flanges protruding from the rolling surface at both ends of the rolling surface of the inner ring, The engaging part which protruded in either of the collars is provided over the bearing circumferential direction.

これにより、軸受の取り外しが容易となる。また、軸受のバックアップを大きく取ることができ、大鍔または小鍔の外径部に窪みをつくる必要がないため、大鍔の強度を維持でき、軸受の耐アキシアル荷重能力が高まる。   Thereby, removal of a bearing becomes easy. Further, since the bearing can be greatly backed up and there is no need to make a recess in the outer diameter portion of the large or small collar, the strength of the large collar can be maintained and the axial load resistance of the bearing is increased.

また、係合部を内輪の小鍔外径部に設けると、小鍔側から軸受全体を容易に取り外すことができる。   Further, when the engaging portion is provided on the outer diameter portion of the inner ring of the inner ring, the entire bearing can be easily removed from the lower edge side.

更に、係合部の形状はテーパ形状であっても良い。すなわち、係合部の転動体側側面部の形状を、径方向内側に近づくにつれて軸方向外側へ向かう斜面とすることで、取り外す際に嵌めこむ工具のかかりが良くなり、取外し力を向上できる。   Furthermore, the shape of the engaging portion may be a tapered shape. That is, by making the shape of the rolling element side side surface portion of the engaging portion an inclined surface that goes outward in the axial direction as it approaches the inner side in the radial direction, it is possible to improve the application of the tool to be fitted when removing, and to improve the removal force.

本発明は、軸受内輪の外径部に軸受取り外し用の係合部を設けることによって、軸受の取り外しを容易にするだけでなく、係合部を突出した形状のみに形成することで、軸受の耐アキシアル荷重能力を向上させることができる。   The present invention not only facilitates removal of the bearing by providing an engagement portion for removing the bearing at the outer diameter portion of the bearing inner ring, but also forms the engagement portion only in a protruding shape, thereby Axial load resistance can be improved.

図１は、実施形態１に係る軸受を示す断面図である。FIG. 1 is a cross-sectional view showing a bearing according to the first embodiment. 図２は、実施形態２に係る軸受を示す断面図である。FIG. 2 is a cross-sectional view showing a bearing according to the second embodiment. 図３は、実施形態３に係る軸受を示す断面図である。FIG. 3 is a cross-sectional view showing a bearing according to the third embodiment.

以下に、図を参照しながら、本発明の実施形態を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

（実施形態１）
図１に示すように、内輪２と、外輪３と、内輪２と外輪３の間に転動自在に設けられた転動体である円すいころ４とから成る軸受１において、内輪２の大鍔８に取り外し部５を形成している。取外し部５は、大鍔外径部８ａから径方向外側に向かって突出した係合部６を有する。この係合部６は、図示しない軸から軸受１を取り外す際に工具を引っ掛け、軸受１を軸から取り外しやすくするためのものである。 (Embodiment 1)
As shown in FIG. 1, in a bearing 1 including an inner ring 2, an outer ring 3, and a tapered roller 4 which is a rolling element provided between the inner ring 2 and the outer ring 3, a large collar 8 of the inner ring 2. The detaching part 5 is formed. The removal part 5 has the engaging part 6 which protruded toward the radial direction outer side from the large collar outer diameter part 8a. The engaging portion 6 is for hooking a tool when the bearing 1 is removed from a shaft (not shown) so that the bearing 1 can be easily detached from the shaft.

（実施形態２）
図２に示すように、実施形態１と比べて、取外し部５を内輪２の小鍔９に設けている点が異なっている。また、小鍔９の外径部９ａに係合部６を設けるため、実施形態１の内輪２よりも軸方向長さが長くなっており、外輪端部よりも軸方向外側へ延伸している。他は実施形態１と同様である。 (Embodiment 2)
As shown in FIG. 2, it differs from the first embodiment in that the removal portion 5 is provided on the gavel 9 of the inner ring 2. Further, since the engaging portion 6 is provided in the outer diameter portion 9a of the small flange 9, the axial length is longer than that of the inner ring 2 of the first embodiment, and the outer ring end portion extends outward in the axial direction. . Others are the same as in the first embodiment.

（実施形態３）
図３に示すように、実施形態１と比べて、係合部６の形状が異なっている。軸受１を図示しない軸から取り外すのに用いる工具をより使用しやすくし、取外し力を大きくするために、係合部６の形状をテーパ形状としている。具体的には、係合部の転動体側側面部を、径方向内側に近づくにつれて軸方向外側へ向かう斜面形状としている。他は実施形態１と同様である。 (Embodiment 3)
As shown in FIG. 3, the shape of the engaging portion 6 is different from that of the first embodiment. In order to make it easier to use a tool used to remove the bearing 1 from a shaft (not shown) and to increase the removal force, the shape of the engaging portion 6 is tapered. Specifically, the rolling element side side surface portion of the engaging portion has a slope shape that goes outward in the axial direction as it approaches the radially inner side. Others are the same as in the first embodiment.

上述した実施形態では、円すいころを転動体とする軸受を基に説明したが、転動体は玉や円筒ころでも良い。また、実施形態３に述べた係合部の形状はテーパ形状に限らない。   In the above-described embodiment, the description has been made based on the bearing using the tapered roller as the rolling element, but the rolling element may be a ball or a cylindrical roller. Further, the shape of the engaging portion described in the third embodiment is not limited to the tapered shape.

以上、本発明の構造について詳細に説明したが、本発明は、以上の例には限定されず、本発明の要旨を逸脱しない範囲において、各種の改良や変形を行なっても良いのはもちろんである。   Although the structure of the present invention has been described in detail above, the present invention is not limited to the above examples, and various improvements and modifications may be made without departing from the scope of the present invention. is there.

１．軸受
２．内輪
３．外輪
４．ころ
５．取外し部
６．係合部
７．転動体側側面部
８．大鍔
８ａ．大鍔外径部
９．小鍔
９ａ．小鍔外径部 1. 1. Bearing Inner ring 3. Outer ring 4. Roller 5 Removal part 6. 6. engaging portion 7. Rolling body side surface portion Oiso 8a. 8. Oiso outer diameter part Gavel 9a. Gauge outer diameter

Claims (2)

外径面に転動面を有する内輪と、内径面に転動面を有する外輪と、前記外輪の転動面と前記内輪の転動面間で回転転動する円筒状の転動体とを有しており、内輪と外輪とが前記転動体を介して同心円状に相対回転するとともに、前記外輪及び前記内輪の転動面は前記内輪及び前記外輪の回転中心軸に対して傾斜して設けられ、前記内輪の前記転動面の両端には、転動面より突出した大鍔、小鍔が設けられている円すいころ軸受において、前記大鍔または前記小鍔のいずれかに突出した係合部が軸受円周方向にわたって設けられていることを特徴とする円すいころ軸受。   An inner ring having a rolling surface on the outer diameter surface, an outer ring having a rolling surface on the inner diameter surface, and a cylindrical rolling element that rotates between the rolling surface of the outer ring and the rolling surface of the inner ring. The inner ring and the outer ring are relatively rotated concentrically through the rolling elements, and the rolling surfaces of the outer ring and the inner ring are inclined with respect to the rotation center axes of the inner ring and the outer ring. In the tapered roller bearing in which a large flange and a small flange protruding from the rolling surface are provided at both ends of the rolling surface of the inner ring, an engagement portion protruding on either the large flange or the small flange A tapered roller bearing characterized in that is provided over the circumferential direction of the bearing. 前記係合部の形状がテーパ形状であることを特徴とする請求項１に記載の円すいころ軸受。   The tapered roller bearing according to claim 1, wherein the shape of the engaging portion is a tapered shape.
JP2013243561A 2013-11-26 2013-11-26 Conical roller bearing Pending JP2015102184A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542775A (en) * 2016-06-28 2018-01-05 斯凯孚公司 Bearing assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50117248U (en) * 1974-03-08 1975-09-25
WO2005045269A1 (en) * 2003-11-07 2005-05-19 Jtekt Corporation Oil lubrication-type rolling bearing device
US20050132554A1 (en) * 2003-12-18 2005-06-23 Honeywell International Inc. Compact removal feature and removal tool for rolling element bearings
JP2006029520A (en) * 2004-07-20 2006-02-02 Ntn Corp Tapered roller bearing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50117248U (en) * 1974-03-08 1975-09-25
WO2005045269A1 (en) * 2003-11-07 2005-05-19 Jtekt Corporation Oil lubrication-type rolling bearing device
US20050132554A1 (en) * 2003-12-18 2005-06-23 Honeywell International Inc. Compact removal feature and removal tool for rolling element bearings
JP2006029520A (en) * 2004-07-20 2006-02-02 Ntn Corp Tapered roller bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542775A (en) * 2016-06-28 2018-01-05 斯凯孚公司 Bearing assembly

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