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JP4510270B2 - Method for manufacturing cage for spherical roller bearing - Google Patents

Method for manufacturing cage for spherical roller bearing Download PDF

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Publication number
JP4510270B2
JP4510270B2 JP2000348939A JP2000348939A JP4510270B2 JP 4510270 B2 JP4510270 B2 JP 4510270B2 JP 2000348939 A JP2000348939 A JP 2000348939A JP 2000348939 A JP2000348939 A JP 2000348939A JP 4510270 B2 JP4510270 B2 JP 4510270B2
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JP
Japan
Prior art keywords
cage
flange
pressing
peripheral edge
outer peripheral
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 - Fee Related
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JP2000348939A
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Japanese (ja)
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JP2002147450A (en
Inventor
廣幸 前田
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.)
Nakanishi Metal Works Co Ltd
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Nakanishi Metal Works Co Ltd
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Priority to JP2000348939A priority Critical patent/JP4510270B2/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/46Cages for rollers or needles
    • F16C33/54Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/543Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22Bearings 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
    • F16C19/34Bearings 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
    • F16C19/38Bearings 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 two or more rows of rollers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06Ball or roller bearings
    • F16C23/08Ball or roller bearings self-adjusting
    • F16C23/082Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/086Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements

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

Description

【0001】
【発明の属する技術分野】
この発明は、各種機械装置における回転軸の支持部等に採用される自動調心ころ軸受等の球面ころ軸受において、球面ころを保持するための球面ころ軸受用保持器に関する。
【0002】
【従来の技術】
自動調心機能を有する複列タイプの球面ころ軸受は、ハウジングに対し取付誤差がある場合や、回転軸のたわみによって生じる内外輪の傾き等がある場合にも不具合なく使用できるため、従来より、振動や衝撃荷重を受ける軸受部等に多く用いられている。
【0003】
このような球面ころ軸受(1)は、例えば図4に示すように、内輪(2)、外輪(3)、案内輪(4)、複数の球面ころ(5)及び一対の保持器(6)を備えている。内輪(2)の外周面には、凹形球面状の2列の内輪軌道面(2a)が設けられるとともに、外輪(3)の内周面には、凹形球面状の外輪軌道面(3a)が設けられる。内輪軌道面(2a)及び外輪軌道面(3a)との間には、たる型の球面ころ(5)が2列に複数個ずつ周方向に沿って配置されるとともに、球面ころ(5)が、各列ごとに保持器(6)によりそれぞれ保持されている。
【0004】
保持器(6)は、椀型形状と称されるものであり、内外両輪(2)(3)間の環状開口面(1a)に沿って配置されるフランジ(6a)と、フランジ(6a)の外周端縁(6d)から軸心に沿って内外両輪(2)(3)間に延びるとともに、両輪(2)(3)間において周方向に連続して配置され、周方向の所定間隔おきに、複数のころ保持用ポケット(6c)が設けられた保持器本体(6b)とを備えており、保持器本体(6b)の各ポケット(6c)内に球面ころ(5)がそれぞれ転動自在に保持されている。
【0005】
また、両輪(2)(3)間における2列のころ(5)の間に、周方向に連続する環状の案内輪(4)が配置されており、この案内輪(4)の外周端面が、保持器(6)における本体(6b)の先端内周面に摺接されて、保持器(6)の案内が図られている。
【0006】
【発明が解決しようとする課題】
上記球面ころ軸受(1)に採用される保持器(6)としては、例えば冷延鋼板等の金属板をプレス加工して得られるプレス成形品からなるプレス保持器が、従来より多く用いられている。
【0007】
このプレス保持器(6)は、ブランク加工された所定形状の鋼板を絞り成形することにより、側面が球面をなす椀型形状の保持器中間製品を形成した後、その製品の側面部にころ(5)を収容保持するためのポケット(6c)を打ち抜き加工により形成するとともに、内径を所定の寸法に仕上げるものであるが、絞り成形直後の形状においては、フランジ(6a)の内面が、ころ(5)の案内を図るためにころ(5)の端面に対し平行となるように形成されている。つまり、フランジ(6a)の外周端縁(6d)側は内周端縁(6e)側よりも軸方向の外側に位置するように、フランジ(6a)が本体(6b)に折返し状に形成されている。
【0008】
一方、軸受(1)は、種類等によって、幅寸法が厳しく制限されるため、上記形状の保持器(6)をそのままの状態で用いると、フランジ(6a)の外周端縁(6d)が、軸受(1)の環状開口面(1a)から外方に突出配置されて、周辺の他の機器に干渉する等の不具合が発生する恐れがある。このため、通常は、プレス保持器(6)における外周端縁(6d)の外面を旋盤を用いて切削加工して、外周端縁(6d)の外面を、軸受(1)の環状開口面(1a)と一致するように平坦面に形成している。
【0009】
しかしながら、上記従来のプレス保持器(6)を製造する場合、プレス加工のみならず、プレス加工とは異質の機械加工である切削加工を必要とするため、各製造工程をスムーズに移行させることが困難であり、生産効率の低下を来すという問題があった。更に切削加工を行う分、工程数の増加を来し、生産効率を一段と低下させるという問題もあった。
【0010】
また、プレス保持器(6)のフランジ外周端縁(6d)を切削するものであるため、肉厚の減少に加えて、切削による金属材料のファイバーフローの切断によって、剛性の低下を来すという問題も抱えていた。
【0011】
この発明は、上記従来技術の問題を解消し、十分な剛性を確保しつつ、生産効率の向上を図ることができる球面ころ軸受用保持器を提供することを目的とする。
【0012】
【課題を解決するための手段】
上記目的を達成するため、この発明は、軸受の内輪及び外輪間に、転動自在に配置された複数の球面ころを保持するための球面ころ軸受用保持器であって、前記内外両輪間の環状開口面に沿って配置される環状のフランジと、前記フランジの外周端縁から軸心に沿って内外両輪間に延びるとともに、内外両輪間において周方向に連続して配置され、周方向の所定の間隔おきに、前記球面ころを保持するための複数のポケットが設けられた保持器本体とを備え、前記フランジの外周端縁に、その外面側が、押圧加工により軸心方向に沿って内方に押し潰されて薄肉部が形成されてなるものを要旨としている。
【0013】
本発明の球面ころ軸受用保持器においては、押圧加工によりフランジ外周端縁を押し潰して薄肉部を形成するものであるため、ブランク加工、絞り加工、押圧加工等のプレス加工のみで製造することができる。
【0014】
更に薄肉部形成の押圧加工と、形状成形用の絞り加工とを同時に行うことも可能であり、その場合には、薄肉部形成用の加工を別途行う必要がなく、その分、工程数を削減することができる。
【0015】
また、押圧加工によって、フランジ外周端縁の剛性を高めることができ、ひいては保持器自体の剛性を高めることができる。このとき、フランジ外周端縁を切削するものではないので、切削による金属材料のファイバーフローの切断を防止でき、フランジ外周端縁の強度低下を確実に防止することができる。
【0016】
本発明においては、前記薄肉部における押圧面としての外面が、前記内外両輪間の環状開口面に対し、平行にかつ内側に配置される平坦面として構成されるのが好ましい。
【0017】
すなわちこの場合には、本発明の保持器が採用された軸受を装置に組み込んだ際に、保持器のフランジ外周端縁(薄肉部)が軸受の環状開口面から外方に突出することがなく、そのフランジ外周端縁が周辺機器に干渉する等の不具合を確実に防止することができる。
【0018】
また本発明においては、前記薄肉部の押し潰し量が、押し潰し前の肉厚に対し、30%以下に調整されてなる構成を採用するのが望ましい。
【0019】
すなわちこの構成を採用する場合には、押圧加工時に過度のプレス圧等が加わるのを防止でき、有害な変形が生じるのを防止することができる。
【0020】
【発明の実施の形態】
図1はこの発明の実施形態である保持器(10)が適用された球面ころ軸受(1)の要部(下側部)を示す断面図、図2及び図3は保持器(10)を示す断面図である。これらの図に示すように、この軸受(1)は、内輪(2)、外輪(3)、案内輪(4)、複数の球面ころ(5)及び一対の保持器(10)を備え、内外両輪(2)(3)の各軌道面(2a)(3a)間に、たる型の球面ころ(5)が2列に複数個ずつ周方向に沿って配置されるとともに、球面ころ(5)が、各列ごとに、一対の保持器(10)によってそれぞれ保持されている。
【0021】
保持器(10)は、プレス成形品からなる椀型形状と称されるものであり、内外両輪(2)(3)間の環状開口面(1a)に沿って配置されるフランジ(20)と、フランジ(20)の外周端縁(21)から軸心に沿って内外両輪(2)(3)間に延び、かつ両輪(2)(3)間において周方向に連続して配置される保持器本体(30)とを具備している。保持器本体(30)には、周方向に沿って所定の間隔おきに、複数のころ保持用ポケット(31)が設けられており、このポケット(31)内に各球面ころ(5)がそれぞれ転動自在に収容保持される。
【0022】
また、本実施形態の保持器(10)において、フランジ(20)の外周端縁(21)には、その外面(25a)が、後述する押圧加工により軸心方向に沿って内側に押し潰されて、薄肉部(25)が形成されている。この薄肉部(25)は、その押圧面としての外面(25a)が、環状開口面(1a)に対し平行配置され、かつ開口面(1a)上に沿って配置される平坦面として構成されている。なお、図2及び図3においては、発明の理解を容易にするため、押圧前(薄肉部形成前)のフランジ外周端縁の輪郭を破線で示している。
【0023】
また、両輪(2)(3)間における2列のころ(5)の間には、周方向に連続する環状の案内輪(4)が配置されており、この案内輪(4)の外周端面が、保持器(10)における本体(30)の先端内周面に摺接されて、保持器(10)の案内が図られている。
【0024】
本実施形態のプレス保持器(10)は、以下のようにプレス加工のみで製造される。すなわち、ブランク加工された所定形状の鋼板を、椀型形状に絞り成形すると同時に、フランジ(20)の外周端縁(21)に対応する部分を、押圧加工により塑性変形して軸心方向の内側へ押し潰して、上記薄肉部(25)を形成する。その後、薄肉部(25)を有する保持器中間製品における本体(30)に対応する部分を、打ち抜き加工して、ころ保持用ポケット(31)を形成するとともに、内径を所定の寸法に仕上げて、保持器製品を得るものである。
【0025】
ここで、本実施形態において、押圧加工による薄肉部(25)の押し潰し量は、押し潰し前の肉厚に対し30%以下、より好ましくは25%以下に調整するのが良い。すなわち、押し潰し量を大きくするには、押圧加工時のプレス圧力を大きくする必要があり、過度のプレス圧力により有害な変形が生じて、安定した寸法精度を得るのが困難になる恐れがある。
【0026】
以上のように、本実施形態の球面ころ軸受用保持器(10)によれば、押圧加工によりフランジ(20)の外周端縁(21)に薄肉部(25)を形成するものであるため、ブランク加工、絞り加工、押圧加工等のプレス加工のみで、つまり同質の機械加工のみで製造することができる。このため、従来のように、プレス加工中に、切削加工等の異質の機械加工を用いて製造する場合と比較して、各製造工程をスムーズに移行させることができ、生産効率を向上させることができる。
【0027】
しかも本実施形態においては、薄肉部形成用の押圧加工を、絞り加工と同時に行うものであるため、薄肉部形成加工を別途行う必要がなく、その分、工程数を削減でき、より一層生産効率を向上させることができる。
【0028】
また、本実施形態の保持器(10)においては、フランジ外周端縁(21)をを押圧加工するものであるため、その押圧加工によって、フランジ外周端縁(21)の剛性を高めることができ、ひいては、保持器自体の剛性を高めることができる。
【0029】
このとき、上記従来例のように、フランジ外周端縁を切削加工により薄肉化する場合には、切削によって、金属材料のファイバーフローを切断することとなり、強度の低下が認められるのに対し、本実施形態においては、金属材料のファイバーフローの切断を防止できるため、強度低下をより確実に防止でき、より一層剛性を高めることができる。
【0030】
参考までに、本実施形態の保持器(10)における薄肉部(25)の硬度は、Hv硬度で170〜190であるのに対し、従来の切削加工されたフランジ外周端縁の硬度は、130〜145であった。
【0031】
また、本実施形態では、上記したように保持器(10)としての剛性を十分に確保できるため、別途、熱処理等を行って剛性を高める必要もなく、更に工程数を削減でき、生産効率を一段と向上させることができる。
【0032】
なお、上記実施形態においては、薄肉部形成用の押圧加工を、絞り加工と同時に行うようにしているが、本発明はそれだけに限られず、薄肉部形成用の押圧加工を別途行うようにしても良い。例えばプレス条件やプレス機械の能力等の関係により、同時プレスが行えないような場合等には、薄肉部形成用の押圧加工を別途行うようにしても良い。もっとも、押圧加工を別工程で行う場合には、その分、工程数の増加を来すこととなる。
【0033】
また上記実施形態においては、保持器(10)におけるフランジ外周端縁(21)の平坦面(25a)を、軸受(1)の環状開口面(1a)と一致させるように構成しているが、本発明はそれだけに限られず、例えばフランジ外周端縁(21)の平坦面(25a)を、軸受環状開口面(1a)よりも内側に配置する場合においても、周辺機器への干渉等を確実に防止することができる。
【0034】
【発明の効果】
以上のように、本発明の球面ころ軸受用保持器によれば、押圧加工によりフランジの外周端縁に薄肉部を形成するものであるため、ブランク加工、絞り加工、押圧加工等のプレス加工のみで、つまり同質の機械加工のみで製造することができる。このため、各製造工程をスムーズに移行させることができ、生産効率を向上させることができる。更に薄肉部形成用の押圧加工を、例えば形状成形用の絞り加工と同時に行うことができ、その場合、押圧加工を別途行う必要がないので、工程数を削減でき、より一層生産効率を向上させることができる。また、押圧加工によって、フランジ外周端縁の剛性を高めることができ、ひいては、保持器自体の剛性を高めることができるという効果を得ることができる。
【0035】
本発明において、薄肉部の外面を、軸受の環状開口面に対し、平行にかつ内側に配置される平坦面として構成する場合には、本発明の保持器が採用された軸受が装置に組み込まれた際に、保持器のフランジ外周端縁が、周辺機器に干渉するのを、より確実に防止でき、より一層高い品質を得ることができるという利点がある。
【0036】
また本発明において、薄肉部の押し潰し量を特定する場合には、過度のプレス圧等による有害な変形を防止でき、より一層品質を向上させることができるという利点がある。
【図面の簡単な説明】
【図1】この発明の実施形態である保持器が適用された球面ころ軸受の下側部を示す断面図である。
【図2】実施形態の保持器を下側半分を示す断面図である。
【図3】実施形態の保持器における薄肉部周辺を拡大して示す断面図である。
【図4】従来の球面ころ軸受を示す断面図である。
【符号の説明】
1…球面ころ軸受
1a…環状開口面
2…内輪
3…外輪
5…球面ころ
10…保持器
20…フランジ
21…外周端縁
25…薄肉部
25a…外面(平坦面)
30…保持器本体
31…たま保持ポケット
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spherical roller bearing retainer for holding a spherical roller in a spherical roller bearing such as a self-aligning roller bearing employed in a support portion of a rotating shaft in various mechanical devices.
[0002]
[Prior art]
Double row spherical roller bearings with self-aligning function can be used without problems even when there is an installation error with respect to the housing or when there is an inclination of the inner and outer rings caused by deflection of the rotating shaft. It is often used for bearings that receive vibration and impact loads.
[0003]
For example, as shown in FIG. 4, the spherical roller bearing (1) includes an inner ring (2), an outer ring (3), a guide ring (4), a plurality of spherical rollers (5), and a pair of cages (6). It has. On the outer peripheral surface of the inner ring (2), two rows of concave spherical inner ring raceway surfaces (2a) are provided, and on the inner peripheral surface of the outer ring (3), a concave spherical outer ring raceway surface (3a) is provided. ) Is provided. Between the inner ring raceway surface (2a) and the outer ring raceway surface (3a), a plurality of barrel type spherical rollers (5) are arranged along the circumferential direction in two rows, and the spherical rollers (5). Each row is held by a holder (6).
[0004]
The cage (6) is called a saddle shape, and includes a flange (6a) disposed along an annular opening surface (1a) between the inner and outer wheels (2) and (3), and a flange (6a). Is extended between the inner and outer wheels (2) and (3) along the axial center from the outer peripheral edge (6d) of the wheel, and is continuously arranged in the circumferential direction between the two wheels (2) and (3), at predetermined intervals in the circumferential direction. And a retainer body (6b) provided with a plurality of roller retaining pockets (6c), and the spherical rollers (5) roll in the respective pockets (6c) of the retainer body (6b). It is held freely.
[0005]
An annular guide wheel (4) continuous in the circumferential direction is disposed between the two rows of rollers (5) between the two wheels (2) (3), and the outer peripheral end face of the guide wheel (4) is The cage (6) is guided in sliding contact with the inner peripheral surface of the tip of the main body (6b) in the cage (6).
[0006]
[Problems to be solved by the invention]
As the cage (6) employed in the spherical roller bearing (1), for example, a press cage made of a press-molded product obtained by pressing a metal plate such as a cold-rolled steel plate is used more than ever. Yes.
[0007]
This press cage (6) is formed by drawing a blank-shaped steel plate of a predetermined shape to form a cage-shaped cage intermediate product having a spherical side surface, and then rolling ( 5) The pocket (6c) for accommodating and holding the material is formed by punching and the inner diameter is finished to a predetermined dimension. In the shape immediately after the drawing, the inner surface of the flange (6a) In order to guide 5), it is formed to be parallel to the end face of the roller (5). That is, the flange (6a) is formed in a folded shape on the main body (6b) so that the outer peripheral edge (6d) side of the flange (6a) is positioned on the outer side in the axial direction than the inner peripheral edge (6e) side. ing.
[0008]
On the other hand, since the width dimension of the bearing (1) is strictly limited depending on the type or the like, when the retainer (6) having the above shape is used as it is, the outer peripheral edge (6d) of the flange (6a) There is a possibility that problems such as interference with other peripheral devices may occur due to the projecting arrangement from the annular opening surface (1a) of the bearing (1). For this reason, usually, the outer surface of the outer peripheral edge (6d) in the press cage (6) is cut using a lathe, and the outer surface of the outer peripheral edge (6d) is used as the annular opening surface ( It is formed on a flat surface so as to coincide with 1a).
[0009]
However, when manufacturing the above conventional press cage (6), not only pressing but also cutting which is a different kind of machining from pressing is required, so that each manufacturing process can be smoothly transferred. There is a problem that it is difficult and the production efficiency is lowered. In addition, there is a problem that the number of processes is increased by the amount of cutting, and the production efficiency is further reduced.
[0010]
Moreover, since the flange outer peripheral edge (6d) of the press cage (6) is cut, in addition to the reduction of the wall thickness, the cutting of the fiber flow of the metal material by cutting causes a reduction in rigidity. I also had problems.
[0011]
An object of the present invention is to provide a spherical roller bearing retainer that can solve the above-described problems of the prior art and improve production efficiency while ensuring sufficient rigidity.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a spherical roller bearing retainer for holding a plurality of spherical rollers rotatably arranged between an inner ring and an outer ring of a bearing, wherein An annular flange disposed along the annular opening surface, and extends between the inner and outer wheels along the axial center from the outer peripheral edge of the flange, and is continuously disposed in the circumferential direction between the inner and outer wheels. And a retainer body provided with a plurality of pockets for holding the spherical rollers, and the outer peripheral side of the flange has an inner surface along the axial direction by pressing. The gist is formed by crushing to form a thin portion.
[0013]
In the spherical roller bearing retainer of the present invention, the outer peripheral edge of the flange is crushed by pressing to form a thin portion, and therefore, it is manufactured only by pressing such as blanking, drawing, and pressing. Can do.
[0014]
Furthermore, it is possible to simultaneously perform the pressing process for forming the thin part and the drawing process for forming the shape. In this case, it is not necessary to perform the process for forming the thin part separately, and the number of processes is reduced accordingly. can do.
[0015]
Further, the rigidity of the flange outer peripheral edge can be increased by pressing, and consequently the rigidity of the cage itself can be increased. At this time, since the outer peripheral edge of the flange is not cut, the fiber flow of the metal material can be prevented from being cut by cutting, and the strength of the outer peripheral edge of the flange can be reliably prevented from being lowered.
[0016]
In the present invention, it is preferable that an outer surface as a pressing surface in the thin portion is configured as a flat surface arranged in parallel and inside with respect to the annular opening surface between the inner and outer wheels.
[0017]
That is, in this case, when the bearing employing the cage of the present invention is incorporated in the device, the flange outer peripheral edge (thin wall portion) of the cage does not protrude outwardly from the annular opening surface of the bearing. In addition, it is possible to reliably prevent problems such as interference of the peripheral edge of the flange with peripheral devices.
[0018]
Moreover, in this invention, it is desirable to employ | adopt the structure by which the amount of crushing of the said thin part is adjusted to 30% or less with respect to the thickness before crushing.
[0019]
That is, when this configuration is adopted, it is possible to prevent an excessive press pressure or the like from being applied during the pressing process, and to prevent harmful deformation from occurring.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a sectional view showing a main part (lower side) of a spherical roller bearing (1) to which a cage (10) according to an embodiment of the present invention is applied, and FIGS. 2 and 3 show the cage (10). It is sectional drawing shown. As shown in these drawings, the bearing (1) includes an inner ring (2), an outer ring (3), a guide ring (4), a plurality of spherical rollers (5), and a pair of cages (10). Between each raceway surface (2a) (3a) of both wheels (2) (3), a plurality of barrel-shaped spherical rollers (5) are arranged along the circumferential direction in two rows, and spherical rollers (5) However, each row is held by a pair of holders (10).
[0021]
The cage (10) is called a saddle shape made of a press-molded product, and includes a flange (20) disposed along the annular opening surface (1a) between the inner and outer wheels (2) and (3). The holding extends from the outer peripheral edge (21) of the flange (20) between the inner and outer wheels (2) and (3) along the axis and is continuously arranged in the circumferential direction between the two wheels (2) and (3). And a main body (30). The cage main body (30) is provided with a plurality of roller holding pockets (31) at predetermined intervals along the circumferential direction, and the spherical rollers (5) are respectively provided in the pockets (31). It is housed and held so that it can roll freely.
[0022]
In the cage (10) of the present embodiment, the outer surface (25a) of the outer peripheral edge (21) of the flange (20) is crushed inward along the axial direction by the pressing process described later. Thus, a thin portion (25) is formed. The thin portion (25) is configured as a flat surface in which an outer surface (25a) as a pressing surface is arranged in parallel to the annular opening surface (1a) and is disposed along the opening surface (1a). Yes. 2 and 3, the outline of the flange outer peripheral edge before pressing (before forming the thin portion) is indicated by a broken line in order to facilitate understanding of the invention.
[0023]
An annular guide wheel (4) that is continuous in the circumferential direction is disposed between the two rows of rollers (5) between the two wheels (2) (3), and an outer peripheral end face of the guide wheel (4). However, the cage (10) is slidably brought into contact with the inner peripheral surface of the tip of the main body (30) to guide the cage (10).
[0024]
The press holder (10) of this embodiment is manufactured only by press work as follows. That is, a blank-shaped steel plate having a predetermined shape is drawn into a saddle shape, and at the same time, a portion corresponding to the outer peripheral edge (21) of the flange (20) is plastically deformed by pressing so as to be axially inner. The thin part (25) is formed. Thereafter, the portion corresponding to the main body (30) in the cage intermediate product having the thin wall portion (25) is punched to form the roller holding pocket (31), and the inner diameter is finished to a predetermined dimension, To obtain a cage product.
[0025]
Here, in this embodiment, it is good to adjust the amount of crushing of the thin part (25) by press work to 30% or less with respect to the thickness before crushing, More preferably, to 25% or less. In other words, in order to increase the amount of crushing, it is necessary to increase the pressing pressure during pressing, which may cause harmful deformation due to excessive pressing pressure, making it difficult to obtain stable dimensional accuracy. .
[0026]
As described above, according to the spherical roller bearing retainer (10) of the present embodiment, the thin portion (25) is formed on the outer peripheral edge (21) of the flange (20) by pressing, It can be manufactured only by press processing such as blank processing, drawing processing, and press processing, that is, only by machining of the same quality. For this reason, as compared with the case of manufacturing using different kinds of machining such as cutting during press processing as in the past, each manufacturing process can be smoothly transferred and the production efficiency can be improved. Can do.
[0027]
In addition, in this embodiment, the pressing process for forming the thin part is performed simultaneously with the drawing process, so there is no need to perform the thin part forming process separately, and accordingly, the number of processes can be reduced, and the production efficiency can be further increased. Can be improved.
[0028]
Moreover, in the cage | basket (10) of this embodiment, since the flange outer peripheral edge (21) is pressed, the rigidity of a flange outer peripheral edge (21) can be improved by the pressing. As a result, the rigidity of the cage itself can be increased.
[0029]
At this time, when the outer peripheral edge of the flange is thinned by cutting as in the above conventional example, the fiber flow of the metal material is cut by cutting, and a decrease in strength is recognized. In the embodiment, since the fiber flow of the metal material can be prevented from being cut, a decrease in strength can be prevented more reliably and the rigidity can be further increased.
[0030]
For reference, the hardness of the thin wall portion (25) in the cage (10) of the present embodiment is 170 to 190 in terms of Hv hardness, whereas the hardness of the flange outer peripheral edge subjected to conventional cutting is 130. ~ 145.
[0031]
Moreover, in this embodiment, since the rigidity as the cage (10) can be sufficiently ensured as described above, there is no need to separately increase the rigidity by performing heat treatment or the like, and the number of processes can be further reduced, and the production efficiency can be reduced. It can be further improved.
[0032]
In the above embodiment, the pressing process for forming the thin part is performed simultaneously with the drawing process, but the present invention is not limited thereto, and the pressing process for forming the thin part may be performed separately. . For example, in the case where simultaneous pressing cannot be performed due to the relationship between the pressing conditions and the capability of the pressing machine, pressing processing for forming the thin portion may be performed separately. However, when pressing is performed in a separate process, the number of processes increases accordingly.
[0033]
In the above embodiment, the flat surface (25a) of the flange outer peripheral edge (21) in the cage (10) is configured to coincide with the annular opening surface (1a) of the bearing (1). The present invention is not limited to this. For example, even when the flat surface (25a) of the flange outer peripheral edge (21) is arranged on the inner side of the bearing annular opening surface (1a), interference with peripheral devices is reliably prevented. can do.
[0034]
【The invention's effect】
As described above, according to the spherical roller bearing retainer of the present invention, a thin portion is formed on the outer peripheral edge of the flange by pressing, so that only pressing such as blanking, drawing, and pressing is performed. That is, it can be manufactured only by machining of the same quality. For this reason, each manufacturing process can be smoothly transferred and the production efficiency can be improved. Furthermore, the pressing process for forming the thin-walled portion can be performed simultaneously with, for example, the drawing process for forming the shape. In this case, since it is not necessary to perform the pressing process separately, the number of processes can be reduced and the production efficiency can be further improved. be able to. Moreover, the rigidity of the flange outer peripheral edge can be increased by pressing, and as a result, the effect that the rigidity of the cage itself can be increased can be obtained.
[0035]
In the present invention, when the outer surface of the thin wall portion is configured as a flat surface disposed in parallel to and inside the annular opening surface of the bearing, the bearing employing the cage of the present invention is incorporated into the apparatus. In this case, there is an advantage that the outer peripheral edge of the flange of the cage can be more reliably prevented from interfering with peripheral devices, and higher quality can be obtained.
[0036]
In the present invention, when the amount of crushing of the thin wall portion is specified, there is an advantage that harmful deformation due to an excessive press pressure or the like can be prevented and the quality can be further improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a lower portion of a spherical roller bearing to which a cage according to an embodiment of the present invention is applied.
FIG. 2 is a cross-sectional view showing a lower half of the cage according to the embodiment.
FIG. 3 is an enlarged cross-sectional view of the periphery of a thin portion in the cage of the embodiment.
FIG. 4 is a sectional view showing a conventional spherical roller bearing.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Spherical roller bearing 1a ... Ring opening surface 2 ... Inner ring 3 ... Outer ring 5 ... Spherical roller 10 ... Cage 20 ... Flange 21 ... Outer peripheral edge 25 ... Thin part 25a ... Outer surface (flat surface)
30 ... Retainer body 31 ... Tama holding pocket

Claims (2)

軸受の内輪及び外輪間の環状開口面に沿って配置される環状のフランジと、前記フランジの外周端縁から軸心に沿って前記内外両輪間に延びるとともに、内外両輪間において周方向に連続して配置され、周方向の所定の間隔おきに、前記球面ころを保持するための複数のポケットが設けられた保持器本体とを備え、前記軸受の内輪及び外輪間に、転動自在に配置された複数の球面ころを保持するための球面ころ軸受用保持器の製造方法であって、
鋼板の絞り加工により、椀型形状の保持器中間製品を形成し、
前記絞り加工と同時に、前記フランジの外周端縁に、その外面側を、押圧加工により軸心方向に沿って内方に押し潰して薄肉部を形成し、
前記保持器中間製品の打ち抜き加工により、前記ポケットを形成するものとし、
前記薄肉部の押し潰し量を、押し潰し前の肉厚に対し、30%以下に調整するとともに、
前記押圧加工によって、前記フランジの外周端縁の剛性を高めるようにしたことを特徴とする球面ころ軸受用保持器の製造方法
An annular flange disposed along a ring-shaped opening surface between the inner ring and the outer ring of the bearing, extends between the inner and outer wheels along the axis from the outer peripheral edge of the flange, circumferentially continuous between the inner and outer wheels And a cage main body provided with a plurality of pockets for holding the spherical rollers at predetermined intervals in the circumferential direction, and arranged to be freely rollable between the inner ring and the outer ring of the bearing. A method of manufacturing a spherical roller bearing retainer for holding a plurality of spherical rollers ,
By drawing steel sheet, forming cage-shaped cage intermediate product,
Simultaneously with the drawing process, the outer peripheral edge of the flange is crushed inward along the axial direction by pressing to form a thin part,
The pocket is formed by punching the retainer intermediate product,
While adjusting the crushing amount of the thin portion to 30% or less with respect to the thickness before crushing,
A method for manufacturing a retainer for a spherical roller bearing , wherein the rigidity of the outer peripheral edge of the flange is increased by the pressing process .
前記薄肉部における押圧面としての外面が、前記内外両輪間の環状開口面に対し、平行にかつ内側に配置される平坦面として構成されてなる請求項1記載の球面ころ軸受用保持器の製造方法The outer surface as a pressing surface in the thin portion, the relative annular opening surface between the inner and outer wheels, parallel and manufacture of the cage for the spherical roller bearing of claim 1, wherein consisting configured as a flat surface disposed on the inner side Way .
JP2000348939A 2000-11-16 2000-11-16 Method for manufacturing cage for spherical roller bearing Expired - Fee Related JP4510270B2 (en)

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Publication number Priority date Publication date Assignee Title
JP4650310B2 (en) * 2005-07-04 2011-03-16 日本精工株式会社 Split type rolling bearing unit
JP7469639B2 (en) * 2020-05-18 2024-04-17 中西金属工業株式会社 Manufacturing method of retainer for spherical roller bearing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0828576A (en) * 1993-10-12 1996-02-02 Nippon Seiko Kk Automatic aligning roller bearing with holder
JPH08326761A (en) * 1995-06-01 1996-12-10 Nakanishi Kinzoku Kogyo Kk Manufacture of retainer for bearing
JP2000104737A (en) * 1998-09-30 2000-04-11 Nsk Ltd Manufacture of press mold retainer for tapered roller bearing
JP2000266063A (en) * 1999-03-17 2000-09-26 Nsk Ltd Conical roller bearing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE462443B (en) * 1988-11-14 1990-06-25 Skf Ab ROLLER MACHINE FOR ROLLING IN A ROLLER BEARING

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0828576A (en) * 1993-10-12 1996-02-02 Nippon Seiko Kk Automatic aligning roller bearing with holder
JPH08326761A (en) * 1995-06-01 1996-12-10 Nakanishi Kinzoku Kogyo Kk Manufacture of retainer for bearing
JP2000104737A (en) * 1998-09-30 2000-04-11 Nsk Ltd Manufacture of press mold retainer for tapered roller bearing
JP2000266063A (en) * 1999-03-17 2000-09-26 Nsk Ltd Conical roller bearing

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