JPH0587147A - Needle roller bearing and manufacture thereof - Google Patents
Needle roller bearing and manufacture thereofInfo
- Publication number
- JPH0587147A JPH0587147A JP3280676A JP28067691A JPH0587147A JP H0587147 A JPH0587147 A JP H0587147A JP 3280676 A JP3280676 A JP 3280676A JP 28067691 A JP28067691 A JP 28067691A JP H0587147 A JPH0587147 A JP H0587147A
- Authority
- JP
- Japan
- Prior art keywords
- flat plate
- outer ring
- opening
- plate portion
- outer wheel
- 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.)
- Pending
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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/50—Other types of ball or roller bearings
- F16C19/502—Other types of ball or roller bearings with rolling elements in rows not forming a full circle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、外輪の周壁に開口を
有する針状ころ軸受およびその製造方法に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle roller bearing having an opening in a peripheral wall of an outer ring and a method for manufacturing the needle roller bearing.
【０００２】[0002]
【従来の技術】従来、針状ころ軸受において、潤滑剤の
供給や、軸係合部材の挿入等のために外輪に開口を設け
る場合がある。例えば、繊維機械の仮撚りスピンドルに
至る箇所でボトムローラに使用される針状ころ軸受で
は、潤滑剤の供給用の開口が外輪に設けられる。2. Description of the Related Art Conventionally, in a needle roller bearing, an opening may be provided in an outer ring for supplying a lubricant or inserting a shaft engaging member. For example, in a needle roller bearing used for a bottom roller at a location reaching a false twist spindle of a textile machine, an outer ring is provided with an opening for supplying a lubricant.
【０００３】図３は、外輪に開口を有する針状ころ軸受
の一例を示す。外輪３１は薄肉鋼板を深絞り加工したシ
ェル形のものであり、ころ３２を保持した保持器３３が
組込まれている。ころ３２は、軸３７に直接に転接する
ものである。外輪３１は、軸受箱３４の孔３５に一致す
る開口３６を有し、保持器３３は、開口３６と同じ周方
向位置に割り部３３ａを有する一つ割りリングに形成さ
れている。これら孔３５，開口３６，および割り部３３
ａを通して、軸３７の凹部に係合する係合部材（図示せ
ず）が挿入される。FIG. 3 shows an example of a needle roller bearing having an opening in the outer ring. The outer ring 31 is a shell-shaped one obtained by deep drawing a thin steel plate, and a cage 33 holding rollers 32 is incorporated therein. The roller 32 directly contacts the shaft 37. The outer ring 31 has an opening 36 corresponding to the hole 35 of the bearing box 34, and the retainer 33 is formed as a split ring having a split portion 33a at the same circumferential position as the opening 36. These holes 35, openings 36, and split portions 33
An engaging member (not shown) that engages with the recess of the shaft 37 is inserted through a.
【０００４】[0004]
【発明が解決しようとする課題】このように外輪３１を
シェル形とした軸受では、軸受箱３４に対して圧入によ
って固定が行われる。しかし、外輪３１に開口３６が加
工してあると、例えば同図に矢印ａで示す方向に軸受の
圧入を行うときに、開口３６の先鋭なエッジ部３６ａ
で、軸受箱３４の内面が切削され、その切削屑が軸受内
に侵入して支障を生じることがある。In the bearing having the outer ring 31 having the shell shape as described above, the outer ring 31 is fixed to the bearing box 34 by press fitting. However, if the opening 36 is formed in the outer ring 31, for example, when the bearing is press-fitted in the direction indicated by the arrow a in the figure, the sharp edge portion 36a of the opening 36 is formed.
Therefore, the inner surface of the bearing box 34 may be cut, and the cutting dust may enter the bearing to cause an obstacle.
【０００５】外輪３１は前記のように鋼板製であるのに
対して、軸受箱３４は軽量化等のためにアルミニウム製
とする場合が多く、また鉄製であっても熱処理等がなさ
れておらず、そのため硬度差によって前記の切削の問題
が生じ易い。また、外輪３６の開口３６は一般に打ち抜
き加工によって形成されるが、そのため前記エッジ部３
６ａにバリ等が生じることがあり、このことからも前記
切削の問題が生じ易い。そのため、エッジ部３６ａを面
取加工することなどが行われているが、加工工程が増え
て生産性が悪くなる。The outer ring 31 is made of a steel plate as described above, whereas the bearing box 34 is often made of aluminum for weight reduction or the like. Even if it is made of iron, it is not heat-treated. Therefore, the above-mentioned problem of cutting is likely to occur due to the difference in hardness. Further, the opening 36 of the outer ring 36 is generally formed by punching, and therefore the edge portion 3 is formed.
Burrs and the like may occur on 6a, which also easily causes the above-mentioned cutting problem. Therefore, the edge portion 36a is chamfered, but the number of processing steps is increased and the productivity is deteriorated.
【０００６】また、図３の例のように、保持器３３に係
合部材挿入用の割り部３３ａを設けた針状ころ軸受で
は、外輪３３の開口３６と割り部３３ａの周方向位置を
一致させる必要があるが、保持器３３は外輪３１内で回
転自在であるため、軸受組立時では割り部３３ａの位置
が定まらない。そのため、開口３６を通して係合部材を
組込むときに、保持器３３の割り部３３の位置を合わせ
ているが、この位置合わせ作業は孔３５を通して行わな
くてはならず、そのため作業性が悪く、位置合わせ作業
に手間がかかるという問題点がある。Further, in the needle roller bearing in which the cage 33 is provided with the split portion 33a for inserting the engaging member as in the example of FIG. 3, the opening 36 of the outer ring 33 and the circumferential position of the split portion 33a coincide with each other. However, since the retainer 33 is rotatable within the outer ring 31, the position of the split portion 33a is not fixed when the bearing is assembled. Therefore, when the engaging member is assembled through the opening 36, the position of the split portion 33 of the retainer 33 is aligned, but this alignment work must be performed through the hole 35, and therefore the workability is poor and the position is poor. There is a problem that it takes time for the matching work.
【０００７】この発明の目的は、圧入時に外輪の開口エ
ッジ部で軸受箱の切削が生じることがなく、かつ保持器
の位置合わせの必要のない針状ころ軸受を提供すること
である。An object of the present invention is to provide a needle roller bearing in which the bearing box is not cut at the opening edge portion of the outer ring during press fitting, and the cage need not be aligned.
【０００８】請求項２の発明の目的は、請求項１の構成
の軸受を簡単に製造できる製造方法を提供することであ
る。An object of the invention of claim 2 is to provide a manufacturing method capable of easily manufacturing the bearing having the structure of claim 1.
【０００９】[0009]
【課題を解決するための手段】この発明の針状ころ軸受
は、外輪の周壁の一部を、軸方向全長に沿う平板部に形
成し、この平板部に開口を設けたものである。前記外輪
内に配置される保持器は、外輪の平板部と同じ周方向位
置に割り部を有する一つ割りのリング状のものとする。According to the needle roller bearing of the present invention, a part of the peripheral wall of the outer ring is formed in a flat plate portion along the entire axial length, and the flat plate portion is provided with an opening. The cage arranged in the outer ring has a split ring shape having a split portion at the same circumferential position as the flat plate portion of the outer ring.
【００１０】この発明の製造方法は、円筒状の外輪の周
壁の一部をプレス加工により平板部に成形する過程と、
この平板部に開口を形成する過程と、一つ割りのリング
状の保持器を外輪内に組込む過程とを含む方法である。The manufacturing method of the present invention comprises a step of forming a part of a peripheral wall of a cylindrical outer ring into a flat plate portion by press working,
This is a method including a process of forming an opening in the flat plate portion and a process of incorporating a split ring-shaped cage into the outer ring.
【００１１】[0011]
【作用】この発明の構成によると、外輪の開口を、その
周壁に設けられた平板部に形成したため、外輪を軸受箱
に圧入するときに、開口周縁のエッジ部が軸受箱の内径
面に触れず、切削が生じることがない。また、前記平板
部は軸方向全長に形成されて、外輪の内側へ突出するた
め、保持器は割り部が前記平板部に当たって外輪内で回
転しない。そのため、組込後における保持器の位置合わ
せが不要になる。According to the structure of the present invention, the opening of the outer ring is formed in the flat plate portion provided on the peripheral wall of the outer ring. No cutting occurs. Further, since the flat plate portion is formed over the entire length in the axial direction and protrudes inward of the outer ring, the split portion of the retainer hits the flat plate portion and does not rotate in the outer ring. Therefore, it is not necessary to align the cage after it is assembled.
【００１２】この発明方法によると、円筒状の外輪の周
壁に平板部をプレス加工した後に開口を形成するので、
開口の形成が打抜き等によって容易に行え、また平板部
の形成のために開口が変形することがない。しかも、平
板部は外輪の全長にわたって形成するので、プレスによ
る平板部の加工が容易に行える。According to the method of the present invention, the opening is formed after pressing the flat plate portion on the peripheral wall of the cylindrical outer ring.
The opening can be easily formed by punching or the like, and the opening is not deformed due to the formation of the flat plate portion. Moreover, since the flat plate portion is formed over the entire length of the outer ring, the flat plate portion can be easily processed by pressing.
【００１３】[0013]
【実施例】この発明の一実施例を図１および図２に基づ
いて説明する。この針状ころ軸受Ａは、シェル形の外輪
１の周壁の一部を、軸方向全長に沿う平板部２に形成
し、この平板部２に、平板部２よりも若干幅広の開口３
を設けたものである。平板部２は、断面が外輪１の円周
における一部の円弧の弦になるように形成する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In this needle roller bearing A, a part of the peripheral wall of the shell-shaped outer ring 1 is formed in a flat plate portion 2 along the entire axial length, and an opening 3 that is slightly wider than the flat plate portion 2 is formed in the flat plate portion 2.
Is provided. The flat plate portion 2 is formed so that its cross section is a chord of a part of an arc in the circumference of the outer ring 1.
【００１４】保持器４は、外輪１の平板部２と同じ周方
向位置に割り部４ａを有する一つ割りのリング状に形成
し、かつ外輪１の内径面で案内される外輪案内形式のも
のとする。保持器４の各ポケットに保持されたころ５
は、図２のように直接に軸６に転接させ、内輪省略形式
とする。The cage 4 is formed in a split ring shape having a split portion 4a at the same circumferential position as the flat plate portion 2 of the outer ring 1, and is of an outer ring guide type guided by the inner diameter surface of the outer ring 1. And Roller 5 held in each pocket of cage 4
Is directly in contact with the shaft 6 as shown in FIG. 2 so that the inner ring is omitted.
【００１５】この軸受Ａの製造に際して、外輪１は、薄
肉鋼板を深絞りで円筒状に加工した後、平板部２をプレ
ス加工し、この平板部２に開口４を打抜き加工する。開
口４の打抜き方向は一般には内面から外面に向けて行な
う。従って軸受外径面側へバリが突出する為、従来のも
のならバリ除去の加工を行なうが、この実施例の軸受Ａ
では、後に説明するように、バリ除去が不要である。In manufacturing the bearing A, the outer ring 1 is obtained by processing a thin steel plate into a cylindrical shape by deep drawing, pressing the flat plate portion 2, and punching an opening 4 in the flat plate portion 2. The punching direction of the opening 4 is generally from the inner surface to the outer surface. Therefore, since the burr protrudes toward the outer diameter surface side of the bearing, the conventional burr removal process is performed.
Then, as described later, the burr removal is unnecessary.
【００１６】図２は、この軸受Ａの使用状態を示す。こ
の軸受Ａは、軸受箱７内に外輪１を圧入して固定する。
軸受箱７は径方向の貫通孔８を有し、この孔８に外輪１
の開口３を一致させる。FIG. 2 shows the bearing A in use. In this bearing A, the outer ring 1 is press-fitted and fixed in the bearing housing 7.
The bearing box 7 has a radial through hole 8 in which the outer ring 1
Match the openings 3 of.
【００１７】この構成の軸受Ａによると、外輪１に平板
部２を形成し、平板部２に開口３を形成したため、図２
からもわかるように、開口３のエッジ部３ａが軸受箱７
の内径面７ａに接触しない。そのため、外輪１の圧入時
に開口３のエッジ部３ａで軸受箱７の内径面７ａを切削
する問題がない。したがって、エッジ部３ａにバリが突
出しているような場合でも、バリ除去の加工の必要がな
い。According to the bearing A having this structure, the flat plate portion 2 is formed in the outer ring 1 and the opening 3 is formed in the flat plate portion 2.
As can be seen from the figure, the edge portion 3a of the opening 3 has the bearing box 7
Does not come into contact with the inner diameter surface 7a. Therefore, there is no problem of cutting the inner diameter surface 7a of the bearing housing 7 by the edge portion 3a of the opening 3 when the outer ring 1 is press-fitted. Therefore, even if burrs are projected on the edge portion 3a, it is not necessary to process the burr removal.
【００１８】また、平板部２は軸方向全長に形成され
て、外輪１の内側へ突出するため、図１（Ａ）に示すよ
うに、保持器４の割り部４ａが平板部２に当たって保持
器４が回転しない。すなわち、保持器４は、割り部４ａ
が平板部２の側縁２ａに当たる位置までしか回転しな
い。そのため、保持器４を外輪１内に組み込んだ後に、
割り部４ａを開口３に合わせるための位置合わせを行う
ことが不要になる。このように、従来必要であった面倒
な位置合わせ作業が不要になるため、軸受Ａの組み込み
作業性が大幅に向上する。Further, since the flat plate portion 2 is formed in the entire length in the axial direction and protrudes inward of the outer ring 1, as shown in FIG. 4 does not rotate. That is, the cage 4 includes the split portion 4a.
Rotates only up to a position where the abuts the side edge 2a of the flat plate portion 2. Therefore, after assembling the cage 4 into the outer ring 1,
It becomes unnecessary to perform the alignment for aligning the split portion 4a with the opening 3. In this way, since the troublesome positioning work which is conventionally required is not necessary, the workability of assembling the bearing A is significantly improved.
【００１９】また、この製造方法によると、外輪１を円
筒状に形成した後に平板部２をプレス加工し、その後に
開口３を形成するので、外輪１の成形や開口３の加工が
容易に行え、また平板部２のプレス成形によって開口３
が変形することがない。しかも、平板部２は外輪１の全
長にわたって形成するので、プレスによる平板部２の成
形が容易に、かつ精度良く行える。Further, according to this manufacturing method, the outer ring 1 is formed into a cylindrical shape, the flat plate portion 2 is pressed, and then the opening 3 is formed. Therefore, the outer ring 1 and the opening 3 can be easily formed. , And the opening 3 is formed by pressing the flat plate portion 2
Does not deform. Moreover, since the flat plate portion 2 is formed over the entire length of the outer ring 1, the flat plate portion 2 can be easily and accurately formed by pressing.
【００２０】[0020]
【発明の効果】この発明の針状ころ軸受は、外輪の周壁
の一部を平板部に形成し、この平板部に開口を設けたた
め、軸受箱への圧入時に外輪の開口周縁のエッジ部が軸
受箱の内径面に触れず、切削の問題が生じない。そのた
め、開口周縁に面取等を施す必要がなく、生産性が良
い。また、平板部が軸方向全長に形成されて、外輪の内
側へ突出するため、保持器が外輪内で回転せず、そのた
め保持器の位置合わせ作業が不要になる。In the needle roller bearing of the present invention, a part of the peripheral wall of the outer ring is formed in a flat plate portion, and an opening is provided in this flat plate portion. It does not touch the inner diameter surface of the bearing box, and no cutting problems occur. Therefore, it is not necessary to chamfer the periphery of the opening, and the productivity is good. Further, since the flat plate portion is formed over the entire length in the axial direction and projects toward the inner side of the outer ring, the retainer does not rotate in the outer ring, and therefore the work for aligning the retainer is unnecessary.
【００２１】この発明の製造方法によると、外輪の周壁
に平板部をプレス加工した後に開口を形成するので、開
口の形成が容易に行え、また平板部のプレス成形によっ
て開口が変形することがない。しかも、平板部は外輪の
全長にわたって形成するので、プレスによる平板部の加
工が容易に行える。これらのため、請求項１の構成の軸
受が容易に製造できる。According to the manufacturing method of the present invention, since the opening is formed after the flat plate portion is pressed on the peripheral wall of the outer ring, the opening can be easily formed, and the opening is not deformed by the press forming of the flat plate portion. . Moreover, since the flat plate portion is formed over the entire length of the outer ring, the flat plate portion can be easily processed by pressing. Because of these, the bearing having the structure of claim 1 can be easily manufactured.
【図１】（Ａ）はこの発明の一実施例の断面図、（Ｂ）
はその斜視図である。FIG. 1A is a sectional view of an embodiment of the present invention, and FIG.
Is a perspective view thereof.
【図２】同実施例の軸受を軸受箱に組み込んだ状態の断
面図である。FIG. 2 is a cross-sectional view showing a state where the bearing of the embodiment is incorporated in a bearing box.
【図３】従来例の断面図である。FIG. 3 is a sectional view of a conventional example.
１…外輪、２…平板部、３…開口、３ａ…エッジ部、４
…保持器、４ａ…割り部、５…ころ、６…軸、７…軸受
箱、８…貫通孔1 ... Outer ring, 2 ... Flat plate part, 3 ... Opening, 3a ... Edge part, 4
... Cage, 4a ... Split part, 5 ... Roller, 6 ... Shaft, 7 ... Bearing box, 8 ... Through hole
Claims (2)
平板部に形成し、この平板部に開口を設け、前記外輪内
に配置される保持器を、前記平板部と同じ周方向位置に
割り部を有する一つ割りのリング状に形成した針状ころ
軸受。1. A part of the peripheral wall of the outer ring is formed in a flat plate portion along the entire length in the axial direction, an opening is provided in the flat plate portion, and a cage arranged in the outer ring is formed in the same circumferential direction as the flat plate portion. A needle roller bearing formed in a split ring shape having a split portion at a position.
により平板部に成形する過程と、この平板部に開口を形
成する過程と、一つ割りのリング状の保持器を外輪内に
組込む過程とを含む針状ころ軸受の製造方法。2. A process of forming a part of a peripheral wall of a cylindrical outer ring into a flat plate portion by press working, a step of forming an opening in this flat plate portion, and a split ring-shaped cage inside the outer ring. A method of manufacturing a needle roller bearing, including a step of assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3280676A JPH0587147A (en) | 1991-09-30 | 1991-09-30 | Needle roller bearing and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3280676A JPH0587147A (en) | 1991-09-30 | 1991-09-30 | Needle roller bearing and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0587147A true JPH0587147A (en) | 1993-04-06 |
Family
ID=17628381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3280676A Pending JPH0587147A (en) | 1991-09-30 | 1991-09-30 | Needle roller bearing and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0587147A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324119A (en) * | 1993-03-29 | 1994-06-28 | Ntn Corporation | Needle roller bearing |
| CN106739796A (en) * | 2015-11-19 | 2017-05-31 | 安徽小龙仔儿童用品有限公司 | A kind of shaftless perambulator wheel apparatus |
-
1991
- 1991-09-30 JP JP3280676A patent/JPH0587147A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324119A (en) * | 1993-03-29 | 1994-06-28 | Ntn Corporation | Needle roller bearing |
| CN106739796A (en) * | 2015-11-19 | 2017-05-31 | 安徽小龙仔儿童用品有限公司 | A kind of shaftless perambulator wheel apparatus |
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