JP3170615B2 - Manufacturing method of rolling bearing race - Google Patents
Manufacturing method of rolling bearing raceInfo
- Publication number
- JP3170615B2 JP3170615B2 JP10550991A JP10550991A JP3170615B2 JP 3170615 B2 JP3170615 B2 JP 3170615B2 JP 10550991 A JP10550991 A JP 10550991A JP 10550991 A JP10550991 A JP 10550991A JP 3170615 B2 JP3170615 B2 JP 3170615B2
- Authority
- JP
- Japan
- Prior art keywords
- shot peening
- polishing
- residual stress
- manufacturing
- compressive residual
- 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
Links
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Rolling Contact Bearings (AREA)
- Heat Treatment Of Articles (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、転がり軸受軌道輪の
製造方法に関する。BACKGROUND OF THE INVENTION This invention relates to a method of manufacturing a rolling bearing ring.
【０００２】[0002]
【従来の技術および発明の課題】鋼製の機械部品の表面
に圧縮残留応力を付加し、疲労強度を高める方法とし
て、ショットピーニング法が知られており、歯車などに
ついては広く実用化されている。2. Description of the Related Art A shot peening method is known as a method for increasing the fatigue strength by applying a compressive residual stress to the surface of a mechanical part made of steel, and is widely used for gears and the like. .
【０００３】転がり軸受の軌道輪についても、ショット
ピーニングによる厳しい運転環境への適用、長寿命など
が期待されるが、転がり軸受の軌道輪の場合、寸法精
度、表面粗さなどに対する要求が厳しいために、ショッ
トピーニングを施したままでは使用することができず、
また、仕上のために研磨を行なうと有用な圧縮残留応力
層が除去されてしまう。さらに詳しく説明すると、軸受
の軌道輪素材は焼入れ硬化されるが、この硬化で歪を生
じるなどするために寸法精度が悪化し、通常は、熱処理
後に半径で０．２mm程度の仕上研磨を行なう必要があ
る。一方、通常、ショットピーニングは熱処理後に実施
するため、このような大きな取代の研磨を行なうと、シ
ョットピーニングにより形成された圧縮残留応力層がほ
とんど除去されてしまう。また、ショットピーニングを
仕上研磨後に行なうと、寸法精度、表面粗さなどが悪化
するために、軸受軌道輪としては使用できなくなる。[0003] Rolling bearing races are also expected to be applied to severe operating environments by shot peening and have a long service life. However, rolling bearing races are strictly required for dimensional accuracy, surface roughness, and the like. Can not be used with shot peening,
Further, when polishing is performed for finishing, a useful compressive residual stress layer is removed. More specifically, the bearing ring material is quenched and hardened, but this hardening causes distortion and the like, which deteriorates dimensional accuracy. Usually, it is necessary to perform finish polishing with a radius of about 0.2 mm after heat treatment. There is. On the other hand, since shot peening is usually performed after heat treatment, when such a large allowance is polished, the compressive residual stress layer formed by shot peening is almost completely removed. Further, if shot peening is performed after finish polishing, dimensional accuracy, surface roughness, and the like deteriorate, so that they cannot be used as bearing race rings.
【０００４】また、ショットピーニングによる圧縮残留
応力層は不安定であり、期待する性能が得られない危険
性がある。[0004] Further, the compressive residual stress layer due to shot peening is unstable, and there is a risk that expected performance cannot be obtained.
【０００５】この発明の目的は、上記の問題を解決し、
寸法精度、表面粗さを悪化させずに疲労寿命、対摩耗性
を向上できる転がり軸受軌道輪の製造方法を提供するこ
とにある。An object of the present invention is to solve the above problems,
Dimensional accuracy, fatigue life without deteriorating the surface roughness is to provide a method for manufacturing a bearing ring rolling can be improved wear resistance.
【０００６】[0006]
【課題を解決するための手段】この発明による転がり軸
受軌道輪の製造方法は、転がり軸受軌道輪素材を焼入れ
硬化する焼入れ硬化工程、上記素材を所定の仕上代を残
して研磨する粗研磨工程、上記素材にショットピーニン
グを施すショットピーニング工程、上記素材を焼戻しす
る焼戻し工程、および上記素材の上記仕上代を研磨する
仕上研磨工程を含むことを特徴とするものである。Means for Solving the Problems A method of manufacturing a rolling axis <br/>受軌road wheels according to the present invention, quench hardening step of quench hardening the bearing ring material rolling, grinding the material leaving the predetermined finishing allowance A rough polishing step, a shot peening step of subjecting the material to shot peening, a tempering step of tempering the material, and a finish polishing step of polishing the finishing allowance of the material.
【０００７】[0007]
【作用】ショットピーニング工程の前に、仕上代を残し
て粗研磨加工を行なうので、ショットピーニング後の表
面粗さ、寸法精度の悪化が少なくなり、小さな仕上代で
仕上研磨加工を行なうことによって十分な表面粗さと寸
法精度が得られる。そして、仕上代を小さくすることが
できるので、仕上研磨加工後にも十分な圧縮残留応力層
が得られる。また、ショットピーニング工程後の焼戻し
により、圧縮残留応力層が安定化される。その結果、疲
労寿命、耐摩耗性が向上する。[Function] Since rough polishing is performed before the shot peening step, leaving a finishing allowance, deterioration of surface roughness and dimensional accuracy after shot peening is reduced, and it is sufficient to perform finish polishing with a small finishing allowance. High surface roughness and dimensional accuracy. And since a finishing margin can be made small, a sufficient compressive residual stress layer can be obtained even after finishing polishing. Further, the tempering after the shot peening step stabilizes the compressive residual stress layer. As a result, fatigue life and wear resistance are improved.
【０００８】[0008]
【実施例】以下、図面を参照して、この発明の実施例に
ついて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００９】図１は、転がり軸受軌道輪の製造方法の１
例を示す工程図である。[0009] Figure 1 is a method for producing a rolling bearing ring 1
It is a process drawing showing an example.
【００１０】基本番号６２０６の単列深みぞ玉軸受の内
輪（内径３０mm）を例にとり、図１の工程図を参照し
て、この発明による製造方法の１例を説明する。An example of the manufacturing method according to the present invention will be described with reference to the process diagram of FIG. 1 taking the inner ring (inner diameter 30 mm) of a single row deep groove ball bearing of basic number 6206 as an example.
【００１１】まず、通常の鍛造および旋削加工などによ
り、内輪素材を作る（工程１）。First, an inner race material is prepared by ordinary forging and turning (step 1).
【００１２】次に、この素材を通常の条件で焼入れ硬化
する焼入れ硬化工程（工程２）を行なう。Next, a quenching and hardening step (step 2) of quenching and hardening the material under normal conditions is performed.
【００１３】次に、この素材を所定の仕上代（たとえば
半径で０．０５mm）を残して研磨する粗研磨工程（工程
３）を行なう。なお、このときの取代は、たとえば半径
で０．２mm程度である。Next, a rough polishing step (step 3) of polishing the material while leaving a predetermined finishing margin (for example, 0.05 mm in radius) is performed. The allowance at this time is, for example, about 0.2 mm in radius.
【００１４】次に、この素材に通常の条件でショットピ
ーニングを施すショットピーニング工程（工程４）を行
なう。Next, a shot peening step (step 4) for subjecting the material to shot peening under ordinary conditions is performed.
【００１５】次に、この素材を通常の条件で焼戻しする
焼戻し工程（工程５）を行なう。Next, a tempering step (step 5) of tempering the material under normal conditions is performed.
【００１６】そして、最後に、この素材の仕上代を研磨
する仕上研磨工程（工程６）を行なう。[0016] Finally, a finish polishing step (step 6) for polishing the finish allowance of the material is performed.
【００１７】ショットピーニング工程の前に、仕上代を
残して粗研磨加工を行なうので、ショットピーニング後
の表面粗さ、寸法精度の悪化が少なくなり、小さな仕上
代で仕上研磨加工を行なうことによって十分な表面粗さ
と寸法精度が得られる。そして、仕上代を小さくするこ
とができるので、仕上研磨加工後にも十分な圧縮残留応
力層が得られる。また、ショットピーニング工程後の焼
戻しにより、圧縮残留応力層が安定化される。その結
果、疲労寿命、耐摩耗性が向上する。Since rough polishing is performed before the shot peening step, leaving a finishing margin, deterioration of surface roughness and dimensional accuracy after shot peening is reduced, and it is sufficient to perform finishing polishing with a small finishing margin. High surface roughness and dimensional accuracy. And since a finishing margin can be made small, a sufficient compressive residual stress layer can be obtained even after finishing polishing. Further, the tempering after the shot peening step stabilizes the compressive residual stress layer. As a result, fatigue life and wear resistance are improved.
【００１８】図２はＪＩＳ高炭素クロム軸受鋼ＳＵＪ２
製の基本番号６２０６の内輪素材について工程４のショ
ットピーニングを行なったのちの素材の表面からの深さ
（mm）に対する圧縮残留応力値（kgf/mm2 ）の測定結果
を示し、図３は工程４のショットピーニング、工程５の
焼戻し後に工程６の仕上研磨を行なったのちの同様の圧
縮残留応力値の測定結果を示している。これらの結果よ
り、仕上研磨を行なっても有用な圧縮残留応力層が残っ
ていることがわかる。FIG. 2 shows JIS high carbon chromium bearing steel SUJ2.
Shows the measurement result of the compressive residual stress value (kgf / mm 2 ) with respect to the depth (mm) from the surface of the material after performing the shot peening of the process 4 with respect to the inner ring material having the basic number 6206 manufactured by Nissan. 4 shows the same measurement results of compressive residual stress after the shot peening of No. 4 and the finish polishing of Step 6 after the tempering of Step 5. From these results, it is understood that a useful compressive residual stress layer remains even after the finish polishing.
【００１９】上記のようにして製造したこの発明による
内輪と、同じＳＵＪ２製の通常の内輪とについて、比較
試験を行なったところ、この発明による内輪は、通常の
内輪に比べて、寿命比が３倍、表面の耐摩耗性が１．４
倍になった。A comparative test was conducted on the inner ring according to the present invention manufactured as described above and a normal inner ring made of the same SUJ2. As a result, the inner ring according to the present invention had a life ratio of 3 times as compared with the normal inner ring. Times, surface wear resistance is 1.4
Doubled.
【００２０】図４は、同じ素材について工程２の焼入れ
硬化を行なったのちに粗仕上研磨を行なわずにショット
ピーニングを行ない、さらに半径で０．２mmの取代で仕
上研磨を行なったときの同様の圧縮残留応力の測定結果
を示している。FIG. 4 shows the same result when the same material is subjected to quenching and hardening in step 2, shot peening is performed without rough finish polishing, and finish polishing is performed with a 0.2 mm radius allowance. The measurement result of compressive residual stress is shown.
【００２１】鍛造、旋削加工後に焼入れ硬化した素材に
ショットピーニングを施すと、熱処理およびショットピ
ーニングにより歪が大きくなるため、仕上研磨のために
半径で０．２mm程度の取代が必要になる。このため、仕
上研磨を行なうと、図４からも明らかなように、ショッ
トピーニングにより形成された有用な圧縮残留応力層が
ほとんど除去されてしまい、ショットピーニングの効果
がなくなってしまう。When shot peening is applied to a material hardened and hardened after forging and turning, distortion is increased by heat treatment and shot peening, so that a margin of about 0.2 mm in radius is required for finish polishing. Therefore, when the finish polishing is performed, as is clear from FIG. 4, the useful compressive residual stress layer formed by the shot peening is almost removed, and the effect of the shot peening is lost.
【００２２】[0022]
【発明の効果】この発明の転がり軸受軌道輪の製造方法
によれば、上述のように、ショットピーニング工程の前
に、仕上代を残して粗研磨加工を行なうので、表面粗
さ、寸法精度を悪化させずに、仕上研磨加工後にも十分
な圧縮残留応力層をが得ることができ、また、ショット
ピーニング工程後に焼戻しを行なうので、圧縮残留応力
層が安定化され、その結果、疲労寿命、耐摩耗性が向上
する。Effects of the Invention] According to the method of manufacturing a rolling bearing ring of the present invention, as described above, prior to the shot peening process, because the rough polishing to leave the finish allowance, surface roughness, dimensional accuracy A sufficient compressive residual stress layer can be obtained even after finish polishing without deterioration, and tempering is performed after the shot peening step, so that the compressive residual stress layer is stabilized, and as a result, fatigue life and resistance to fatigue Abrasion is improved.
【図１】この発明の転がり軸受軌道輪の製造方法の１例
を示す工程図である。1 is a process diagram showing an example of a method of manufacturing a rolling bearing ring of the present invention.
【図２】この発明の方法においてショットピーニング工
程を行なったのちの素材の表面からの深さに対する圧縮
残留応力値の測定結果を示すグラフである。FIG. 2 is a graph showing a measurement result of a compressive residual stress value with respect to a depth from a surface of a material after performing a shot peening step in the method of the present invention.
【図３】この発明の方法において仕上研磨工程を行なっ
たのちの転がり軸受軌道輪の表面からの深さに対する圧
縮残留応力値の測定結果を示すグラフである。3 is a graph showing the measurement results of residual compressive stress value for the depth from the surface of the rolling bearing ring of After performing finish polishing in the method of the present invention.
【図４】焼入れ硬化を行なったのちに粗仕上研磨を行な
わずにショットピーニングを行ない、さらに仕上研磨を
行なったときの転がり軸受軌道輪の表面からの深さに対
する圧縮残留応力の測定結果を示すグラフである。[4] performed a shot peening without rough finish polishing After performing hardened, shows the measurement results of the compressive residual stress on the rolling depth from the surface of the bearing ring when subjected to further finishing polishing It is a graph.
(2) 焼入れ硬化工程 (3) 粗仕上研磨工程 (4) ショットピーニング工程 (5) 焼戻し工程 (6) 仕上研磨工程 (2) Quench hardening process (3) Rough finish polishing process (4) Shot peening process (5) Tempering process (6) Finish polishing process
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C21D 9/00 - 9/44 C21D 9/50 C21D 7/06 F16C 33/64 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) C21D 9/00-9/44 C21D 9/50 C21D 7/06 F16C 33/64
Claims (1)
入れ硬化工程、上記素材を所定の仕上代を残して研磨す
る粗研磨工程、上記素材にショットピーニングを施すシ
ョットピーニング工程、上記素材を焼戻しする焼戻し工
程、および上記素材の上記仕上代を研磨する仕上研磨工
程を含むことを特徴とする転がり軸受軌道輪の製造方
法。1. A quench hardening step of quench hardening the bearing ring material rolling, rough polishing step of polishing the material leaving the predetermined finishing allowance, shot peening step of shot peening to the material, tempering the material tempering process, and a manufacturing method of the bearing ring rolling, characterized in that it comprises a finish polishing step for polishing the finish allowance of the material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10550991A JP3170615B2 (en) | 1991-05-10 | 1991-05-10 | Manufacturing method of rolling bearing race |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10550991A JP3170615B2 (en) | 1991-05-10 | 1991-05-10 | Manufacturing method of rolling bearing race |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04333521A JPH04333521A (en) | 1992-11-20 |
| JP3170615B2 true JP3170615B2 (en) | 2001-05-28 |
Family
ID=14409573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10550991A Expired - Fee Related JP3170615B2 (en) | 1991-05-10 | 1991-05-10 | Manufacturing method of rolling bearing race |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3170615B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100504093C (en) * | 2008-04-05 | 2009-06-24 | 余姚市曙光不锈钢轴承有限公司 | Mirror face stainless steel bearing manufacture process |
| JP6075492B1 (en) * | 2016-04-04 | 2017-02-08 | 裕志 杉江 | A tissue box that can be connected to the top and bottom and can be capped when separated |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2275973B (en) * | 1993-03-08 | 1996-10-16 | Nsk Ltd | Method for manufacture balls for bearings and products thereof |
| JPH0735217A (en) * | 1993-07-23 | 1995-02-07 | Nippon Seiko Kk | Rolling slide part |
| JP4603304B2 (en) * | 2004-07-20 | 2010-12-22 | Ｎｔｎ株式会社 | Sealed rolling bearing |
| SE531355C2 (en) * | 2008-01-15 | 2009-03-03 | Skf Ab | Simplified rolling bearing unit and a method for manufacturing such bearing unit |
| JP5690706B2 (en) | 2011-11-16 | 2015-03-25 | 本田技研工業株式会社 | Radiator structure of saddle riding type vehicle |
| GB2521220A (en) * | 2013-12-16 | 2015-06-17 | Skf Ab | Process for treating steel components |
| CN113560814A (en) * | 2021-04-26 | 2021-10-29 | 徐州新大隆化工泵业制造有限公司 | Processing technology of high-strength plunger pump check valve |
-
1991
- 1991-05-10 JP JP10550991A patent/JP3170615B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100504093C (en) * | 2008-04-05 | 2009-06-24 | 余姚市曙光不锈钢轴承有限公司 | Mirror face stainless steel bearing manufacture process |
| JP6075492B1 (en) * | 2016-04-04 | 2017-02-08 | 裕志 杉江 | A tissue box that can be connected to the top and bottom and can be capped when separated |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04333521A (en) | 1992-11-20 |
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