JP2997942B2 - Preload device for rolling bearing - Google Patents
Preload device for rolling bearingInfo
- Publication number
- JP2997942B2 JP2997942B2 JP13115990A JP13115990A JP2997942B2 JP 2997942 B2 JP2997942 B2 JP 2997942B2 JP 13115990 A JP13115990 A JP 13115990A JP 13115990 A JP13115990 A JP 13115990A JP 2997942 B2 JP2997942 B2 JP 2997942B2
- Authority
- JP
- Japan
- Prior art keywords
- rolling bearing
- pressing
- preload
- outer ring
- steel ball
- 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.)
- Expired - Lifetime
Links
Landscapes
- Support Of The Bearing (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、回転軸のころがり軸受をセッティングす
るときに、適正な予圧を負荷するころがり軸受の予圧装
置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling bearing preload device that applies an appropriate preload when setting a rolling bearing of a rotary shaft.
従来のころがり軸受の予圧装置の断面を第３図及び第
４図に示す。なお、各図中、同一または相当部分は同一
符号で表わす。FIGS. 3 and 4 show cross sections of a conventional rolling bearing preloading device. In the drawings, the same or corresponding parts are denoted by the same reference numerals.
（従来例１） 第３図において、１は回転軸、２はころがり軸受、2a
はころがり軸受２の内輪、2bは同じく外輪であり、３は
ころがり軸受２の内輪2a同士の間隔を規正するスペー
サ、４は内輪2aを回転軸１に固定するナット、５はころ
がり軸受２を機体Ｍに収納保持するハウジング、６は機
体Ｍに取り付けてハウジング５の側端面を閉塞する取付
フランジであり、Ｓは取付フランジ５によって外輪2bの
側面を押圧してころがり軸受２に予圧を与えるための隙
間である。(Conventional example 1) In FIG. 3, 1 is a rotating shaft, 2 is a rolling bearing, 2a
The inner ring of the rolling bearing 2 and 2b are also outer rings, 3 is a spacer for regulating the interval between the inner rings 2a of the rolling bearing 2, 4 is a nut for fixing the inner ring 2a to the rotating shaft 1, and 5 is the body of the rolling bearing 2. Reference numeral 6 denotes a housing that is housed and held in M. Reference numeral 6 denotes a mounting flange that is mounted on the body M and closes a side end surface of the housing 5. It is a gap.
上記構成の予圧装置においては、取付フランジ５の不
図示の複数の取付ボルトを平均してしめつけることによ
って、ころがり軸受２に予圧が与えられる。In the preloading device having the above structure, a preload is applied to the rolling bearing 2 by averaging and tightening a plurality of mounting bolts (not shown) of the mounting flange 5.
（従来例２） 第４図において、6Aはハウジング５にねじ込んで取付
けられる取付フランジ、6aはフランジ6Aの外側面の同一
円上に穿設された工具取付穴である。(Conventional Example 2) In FIG. 4, 6A is a mounting flange screwed into the housing 5, and 6a is a tool mounting hole drilled on the same circle on the outer surface of the flange 6A.
この取付穴6aに不図示のしめつけ工具の突起を挿入し
て、フランジ6Aを回してハウジング５にねじ込み、ころ
がり軸受２の外輪2bの側面を押圧すると、ころがり軸受
２に予圧が与えられる。When a projection of an unillustrated clamping tool is inserted into the mounting hole 6a, the flange 6A is turned and screwed into the housing 5, and the side surface of the outer ring 2b of the rolling bearing 2 is pressed, whereby a preload is applied to the rolling bearing 2.
しかし、従来例１では、複数の取付ボルトをしめつけ
て予圧を負荷するから、ころがり軸受の全周を均等に予
圧することは、サイズが大きくなる程、困難である。However, in the first conventional example, since the preload is applied by tightening the plurality of mounting bolts, it is difficult to preload the entire circumference of the rolling bearing uniformly as the size increases.
実施例２では、フランジ6Aをねじ込んで予圧を負荷す
るから、ねじのリードの影響によって、ころがり軸受２
の全周を均等に予圧できない。予圧が不均等になると、
偏荷重や過荷重による回転摩擦で発熱して軸回りが熱膨
張し、ころがり軸受の破損やかじりが生じる。In the second embodiment, a preload is applied by screwing the flange 6A, so that the rolling bearing 2
Cannot be preloaded evenly over the entire circumference. If the preload becomes uneven,
Heat is generated due to rotational friction caused by an unbalanced load or overload, and the circumference of the shaft is thermally expanded, causing damage and galling of the rolling bearing.
また、予圧が不十分の場合は、ころがり軸受２の遊び
による回転軸の偏心によって振動が発生する。If the preload is insufficient, vibration occurs due to the eccentricity of the rotating shaft due to the play of the rolling bearing 2.
この発明は、以上のような従来例の問題点を解消する
ためになされたもので、ころがり軸受の全周にわたっ
て、均等な予圧を容易かつ適正に負荷することができる
ころがり軸受の予圧装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the conventional example, and provides a rolling bearing preload device that can easily and appropriately apply a uniform preload over the entire circumference of the rolling bearing. The purpose is to do.
この発明が提供するころがり軸受の予圧装置は、機体
と回転軸の間に介装したころがり軸受の内輪または外輪
の側面を軸方向に押して他方の側面を機体に押し付ける
ことによって、同軸受に予圧を負荷するころがり軸受の
予圧装置であって、前記ころがり軸受の内輪または外輪
の側面を押圧するための押圧ディスクと、この押圧ディ
スクの背面中心部の円錐状凹穴に嵌めた鋼球と、この鋼
球を押圧して押圧ディスクを内輪または外輪に押しつけ
ることによって同軸受けに予圧を負荷する、機体のねじ
穴にねじ込む押圧プラグとより構成したものである。A preloading device for a rolling bearing provided by the present invention applies a preload to the bearing by pressing the side surface of an inner ring or an outer ring of a rolling bearing interposed between a body and a rotating shaft in the axial direction and pressing the other side surface to the body. A preloading device for a loaded rolling bearing, comprising: a pressing disk for pressing a side surface of an inner ring or an outer ring of the rolling bearing; a steel ball fitted into a conical concave hole at a central portion of a back surface of the pressing disk; A pressure plug is screwed into a screw hole of the fuselage to apply a preload to the coaxial bearing by pressing the ball to press the pressing disk against the inner ring or the outer ring.
この発明のころがり軸受の予圧装置によれば、押圧デ
ィスクと押圧プラグが鋼球との摺接部において相対回動
可能になっているから、押圧プラグによって鋼球を押圧
することにより、そのときの押圧力を押圧ディスクを介
してころがり軸受の内輪または外輪の側面に均等に伝達
することができる。According to the rolling bearing preloading device of the present invention, since the pressing disk and the pressing plug are relatively rotatable at the sliding contact portion with the steel ball, pressing the steel ball with the pressing plug allows the pressing at that time. The pressing force can be evenly transmitted to the inner ring or the outer ring side surface of the rolling bearing via the pressing disk.
このため、この発明によれば、上記押圧力を制御する
ことによって、適正な予圧をころがり軸受の内輪または
外輪の全周にわたって均等に負荷することができる。Therefore, according to the present invention, by controlling the pressing force, an appropriate preload can be uniformly applied over the entire circumference of the inner ring or the outer ring of the rolling bearing.
（実施例１） 第１図は第１の実施例のころがり軸受の予圧装置を示
す断面図である。なお、従来例と同一または相当部分は
同一符号で表わす。Embodiment 1 FIG. 1 is a cross-sectional view showing a rolling bearing preloading device according to a first embodiment. The same or corresponding parts as in the conventional example are denoted by the same reference numerals.
第１図において、８はころがり軸受２の外輪2bの側面
を均等に押圧する押圧ディスク、8aは押圧ディスク８の
外周にリング状に突設され端面で外輪2bの側面を押圧す
る環状押圧部、8bは押圧ディスク８の背面の中心部に円
錐状に削設された凹穴である。In FIG. 1, reference numeral 8 denotes a pressing disk that evenly presses the side surface of the outer ring 2b of the rolling bearing 2, 8a denotes an annular pressing portion that protrudes in a ring shape on the outer periphery of the pressing disk 8 and presses the side surface of the outer ring 2b at an end surface, Reference numeral 8b denotes a conical hole formed in the center of the back surface of the pressing disk 8 in a conical shape.
９は取付フランジ、9aは取付フランジ９の中心部に設
けられたねじ穴、10はねじ穴9aにねじ込んでころがり軸
受２に予圧を負荷する押圧プラグである。10aは鋼球11
を高粘度のグリスなどの充填によって移動可能に保持
し、予圧負荷時に鋼球11を押圧する押圧プラグ10に設け
られた底面が平坦な保持穴である。9 is a mounting flange, 9a is a screw hole provided in the center of the mounting flange 9, and 10 is a pressing plug that is screwed into the screw hole 9a to apply a preload to the rolling bearing 2. 10a is a steel ball 11
Is movably held by filling with high-viscosity grease or the like, and the bottom surface provided in the pressing plug 10 for pressing the steel ball 11 at the time of a preload is a flat holding hole.
以上の構成に基づく作用を説明する。 The operation based on the above configuration will be described.
まず、ころがり軸受２を挿入したハウジング５に押圧
ディスク８を嵌入して、ころがり軸受２の外輪2bの側面
に環状押圧部8aのリング状の端面を当接させる。First, the pressing disk 8 is fitted into the housing 5 in which the rolling bearing 2 is inserted, and the ring-shaped end surface of the annular pressing portion 8a is brought into contact with the side surface of the outer ring 2b of the rolling bearing 2.
次に、押圧プラグ10をねじ穴9aに仮りじめしグリスを
充填した保持穴10aに鋼球11を押し込んで保持させた取
付フランジ9aをハウジング５に装着して、不図示の取付
ボルトでハウジング５の側端に固定する。Next, the pressing plug 10 is preliminarily pre-tensioned in the screw hole 9a, and the mounting flange 9a in which the steel ball 11 is pressed and held in the holding hole 10a filled with grease is mounted on the housing 5, and the housing 5 is mounted with a mounting bolt (not shown). To the side edge of
ついで、押圧プラグ10を不図示のねじ込工具によって
回して取付フランジ９のねじ穴9aにねじ込んで鋼球11を
押圧する。Next, the pressing plug 10 is turned by a screwing tool (not shown) and screwed into the screw hole 9 a of the mounting flange 9 to press the steel ball 11.
押圧された鋼球11は押圧ディスク８の中心に設けられ
た凹穴8bの円錐面に押圧され、この押圧力が環状押圧部
8aを介して外輪2bの側面に均等に負荷され、外輪2bが全
周にわたって均等に押圧される。The pressed steel ball 11 is pressed against the conical surface of a concave hole 8b provided at the center of the pressing disk 8, and this pressing force is applied to an annular pressing portion.
The outer ring 2b is evenly loaded on the side surface of the outer ring 2b via the inner ring 8a, and the outer ring 2b is pressed uniformly over the entire circumference.
このとき、回転軸１を手回ししながら押圧プラグ10を
しめつけ工具でねじ穴9aにねじ込んで適切な予圧を負荷
することによって、ころがり軸受２の遊びをなくする。At this time, the pressing plug 10 is screwed into the screw hole 9a with a tightening tool and a suitable preload is applied while rotating the rotating shaft 1 by hand, thereby eliminating the play of the rolling bearing 2.
このようにすると、外輪2bの全周にわたって適正な予
圧が負荷される。これによって、回転軸１の偏心の発生
は防止され、この平常な回転が維持される。その結果、
偏荷重や過荷重によるころがり軸受のがじりや破損はな
くなるとともに、偏心による機器の精度の低下や振動の
発生もなくなる。By doing so, an appropriate preload is applied over the entire circumference of the outer ring 2b. Thus, the occurrence of eccentricity of the rotating shaft 1 is prevented, and this normal rotation is maintained. as a result,
Rolling bearings are not warped or damaged due to eccentric loads or overloads, and the accuracy of equipment is not reduced and vibrations are not caused by eccentricity.
なお、この実施例では鋼球を用いたが、鋼球に限定さ
れるものでない。所望の剛性と弾性を備えた金属球であ
れば用いることができる。In addition, although the steel ball was used in this embodiment, it is not limited to the steel ball. Any metal sphere having desired rigidity and elasticity can be used.
また、押圧ディスク８とリング状の環状押圧部8aを別
体として設けてもよい。更に、予圧セッティングを完了
したプラグ10の回り止めを設けるとよい。更にまた、予
圧の付与はトルクメータなどを用いて適正化を図るとよ
い。Further, the pressing disk 8 and the ring-shaped annular pressing portion 8a may be provided separately. Further, it is preferable to provide a stopper for the plug 10 which has completed the preload setting. Furthermore, the application of the preload may be optimized by using a torque meter or the like.
（実施例） 第２図は第２の実施例のころがり軸受の予圧装置を示
す。(Embodiment) FIG. 2 shows a preloading device for a rolling bearing according to a second embodiment.
なお、図中、第１の実施例と同一または相当部分は同
一符号で表わす。In the drawings, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals.
この実施例は内輪の側面を均等に押圧してころがり軸
受に予圧を負荷する場合の例である。第２図において、
3aはころがり軸受２の外輪2bの間隔を規制するスペー
サ、8Bは押圧ディスクであり、その外周には、リング状
に突設され、端面で内輪2aの側面を押圧する環状押圧部
8cが一体で設けられている。This embodiment is an example in which a preload is applied to a rolling bearing by uniformly pressing the side surface of an inner ring. In FIG.
Reference numeral 3a denotes a spacer for regulating the interval between the outer rings 2b of the rolling bearing 2, and 8B denotes a pressing disk.
8c is provided integrally.
次に作用を説明する。先ず押圧ディスク8Bの環状押圧
部8cを回転軸１の側端部に嵌合する。以下の作用は第１
の実施例と同様に説明できるので、その説明は省略す
る。Next, the operation will be described. First, the annular pressing portion 8c of the pressing disk 8B is fitted to the side end of the rotating shaft 1. The following actions are the first
Since the description can be made in the same manner as the embodiment, the description thereof is omitted.
なお、この実施例の場合、回転軸１とともに押圧ディ
スク8Bが回転するので、押圧プラグ10と鋼球11との間
に、押圧ディスク8Bを押圧すると同時に回転機能を付与
できるスラストタイプ、あるいはテーパローラタイプの
ころがり軸受を介在させるとよい。In this embodiment, since the pressing disk 8B rotates together with the rotating shaft 1, between the pressing plug 10 and the steel ball 11, the pressing disk 8B is pressed, and at the same time, a thrust type or a taper roller capable of imparting a rotation function is provided. It is advisable to interpose a rolling bearing of the type.
〔発明の効果〕 以上説明したように、この発明によれば、上述のよう
な構成としたので、ころがり軸受の全周にわたって均等
かつ適正な予圧を負荷することができる。この結果、偏
荷重や過荷重によるころがり軸受の破損やかじりの発生
と、ころがり軸受の遊びによる回転軸の偏心によって生
じる振動の発生を防止し、機器の精度を向上させること
ができる。[Effects of the Invention] As described above, according to the present invention, since the above-described configuration is employed, a uniform and appropriate preload can be applied over the entire circumference of the rolling bearing. As a result, it is possible to prevent the occurrence of breakage or galling of the rolling bearing due to an eccentric load or overload, and to prevent the occurrence of vibration caused by the eccentricity of the rotating shaft due to the play of the rolling bearing, thereby improving the precision of the device.
第１図は第１の実施例のころがり軸受の予圧装置の断面
図、第２図は第２の実施例のころがり軸受の予圧装置の
断面図、第３図及び第４図は従来のころがり軸受の予圧
装置の断面図である。 図中、２はころがり軸受、2aは内輪、2bは外輪、8,8Bは
押圧ディスク、8bは凹穴、９は取付フランジ、10は押圧
プラグ、11は鋼球である。 なお、図中、同一または相当部分は同一符号で表わす。FIG. 1 is a cross-sectional view of a rolling bearing preloading device according to a first embodiment, FIG. 2 is a cross-sectional view of a rolling bearing preloading device according to a second embodiment, and FIGS. 3 and 4 are conventional rolling bearings. It is sectional drawing of the preloading device of FIG. In the drawing, 2 is a rolling bearing, 2a is an inner ring, 2b is an outer ring, 8 and 8B are pressing disks, 8b is a concave hole, 9 is a mounting flange, 10 is a pressing plug, and 11 is a steel ball. In the drawings, the same or corresponding parts are denoted by the same reference numerals.
Claims (1)
の内輪または外輪の側面を軸方向に押して他方の側面を
機体に押し付けることによって、同軸受に予圧を負荷す
るころがり軸受の予圧装置であって、前記ころがり軸受
の内輪または外輪の側面を押圧するための押圧ディスク
と、この押圧ディスクの背面中心部の円錐状凹穴に嵌め
た鋼球と、この鋼球を押圧して押圧ディスクを内輪また
は外輪に押しつけることによって同軸受に予圧を負荷す
る、機体のねじ穴にねじ込む押圧プラグとよりなるころ
がり軸受の予圧装置。1. A preloading device for a rolling bearing in which a preload is applied to a rolling bearing by pressing a side surface of an inner ring or an outer ring of the rolling bearing interposed between the body and a rotating shaft in an axial direction and pressing the other side against the body. A pressing disk for pressing the side surface of the inner ring or the outer ring of the rolling bearing, a steel ball fitted in a conical concave hole in the center of the back surface of the pressing disk, and a pressing disk for pressing the steel ball. A preloading device for a rolling bearing, comprising a pressing plug screwed into a screw hole of an airframe, which applies a preload to the bearing by pressing the same against an inner ring or an outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13115990A JP2997942B2 (en) | 1990-05-23 | 1990-05-23 | Preload device for rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13115990A JP2997942B2 (en) | 1990-05-23 | 1990-05-23 | Preload device for rolling bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0429611A JPH0429611A (en) | 1992-01-31 |
| JP2997942B2 true JP2997942B2 (en) | 2000-01-11 |
Family
ID=15051381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13115990A Expired - Lifetime JP2997942B2 (en) | 1990-05-23 | 1990-05-23 | Preload device for rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2997942B2 (en) |
-
1990
- 1990-05-23 JP JP13115990A patent/JP2997942B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0429611A (en) | 1992-01-31 |
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