JP2002187058A - Method for removing minute foreign matters and rolling bearing - Google Patents
Method for removing minute foreign matters and rolling bearingInfo
- Publication number
- JP2002187058A JP2002187058A JP2000387339A JP2000387339A JP2002187058A JP 2002187058 A JP2002187058 A JP 2002187058A JP 2000387339 A JP2000387339 A JP 2000387339A JP 2000387339 A JP2000387339 A JP 2000387339A JP 2002187058 A JP2002187058 A JP 2002187058A
- Authority
- JP
- Japan
- Prior art keywords
- foreign matter
- minute foreign
- foreign matters
- residual
- bearing
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49636—Process for making bearing or component thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49636—Process for making bearing or component thereof
- Y10T29/49707—Bearing surface treatment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rolling Contact Bearings (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ハードディスクド
ライブ、ビデオ、ＯＡ機器、エアコン、クリーナ等の家
電製品、自動車の回転支持部において、騒音、振動、寿
命に優れた軸受に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing excellent in noise, vibration, and life in a rotary support portion of a home appliance such as a hard disk drive, a video, an OA device, an air conditioner, a cleaner, and an automobile.
【０００２】[0002]
【従来の技術】例えば、転がり軸受は、軌道面をそれぞ
れ有する内輪・外輪と、複数の転動体と、保持器とから
なる。そして、前記転動体は、前記内輪の軌道面と前記
外輪の軌道面との間に転動自在に配置されている。ま
た、前記転動体は保持器により、各々等間隔に配置さ
れ、かつ、回転自在に保持されている。そして、転がり
軸受の使用時には、前記転動体は自転しながら内輪の周
囲を公転し、前記保持器は玉の公転速度と同じ速度で内
輪の周囲を回転することで、前記転動体の回転に伴っ
て、前記内輪と前記外輪とが自在に相対回転する。2. Description of the Related Art For example, a rolling bearing includes an inner ring and an outer ring each having a raceway surface, a plurality of rolling elements, and a cage. The rolling element is disposed so as to roll freely between the raceway surface of the inner ring and the raceway surface of the outer ring. The rolling elements are arranged at equal intervals by a retainer and are rotatably held. When the rolling bearing is used, the rolling element revolves around the inner ring while rotating, and the retainer rotates around the inner ring at the same speed as the revolving speed of the ball. Thus, the inner ring and the outer ring rotate relatively freely.
【０００３】よって、前記転動体と前記内輪・外輪の軌
道面との接触面、前記転動体と前記保持器との接触面、
前記内輪・外輪の軌道面と前記保持器との接触面等に異
物の付着があると、前記使用時に、騒音を誘発したり、
また、軌道面や転動体に面荒れや圧痕を生じ、音響、振
動、回転精度、寿命や信頼性に悪影響を与える原因とな
る。そこで、転がり軸受用部品（外輪、内輪、転動体、
保持器）の、切削工程、熱処理工程、研削工程で生ず
る、材料の金属粉、軸受部品の組成物の欠落片等残留微
小異物の除去対策として、前記各工程の後にバレル研磨
工程を設けている。Accordingly, a contact surface between the rolling element and the raceway surfaces of the inner ring and the outer ring, a contact surface between the rolling element and the cage,
If there is foreign matter attached to the contact surface between the raceway surface of the inner ring / outer ring and the retainer, at the time of use, it may cause noise,
In addition, surface roughness and indentation are generated on the raceway surface and the rolling elements, which have a bad influence on sound, vibration, rotation accuracy, life and reliability. Therefore, rolling bearing parts (outer ring, inner ring, rolling element,
A barrel polishing step is provided after each of the above steps as a measure for removing residual minute foreign matter such as metal powder of material and chips of the composition of the bearing component, which are generated in the cutting step, heat treatment step, and grinding step of the retainer). .
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、バレル
研磨工程において、残留微小異物を除去するために用い
られる研削メディアには、珪素、アルミナ等を主成分と
する燒結微粒子等、硬度の高い材料が含まれているの
で、バレル研磨機の回転数や振動数を上げると、転がり
軸受用部品の表面に対するダメージが大きく、損傷の危
険がある。更に、研削メディアは弾性変形が少ないの
で、残留微小異物の除去を行う部品の表面になじみ難
く、部品表面に付着した残留微小異物の確実な除去は困
難となっている。また、研削メディア自体が残留微小異
物として製品面に残ってしまうという問題もあった。However, in the barrel polishing step, the grinding media used for removing the residual fine foreign matter contains a material having high hardness such as sintered fine particles mainly composed of silicon, alumina and the like. Therefore, if the rotation speed or the frequency of the barrel polishing machine is increased, the surface of the rolling bearing component is greatly damaged, and there is a risk of damage. Further, since the grinding media has little elastic deformation, it is difficult to adapt to the surface of the component from which the residual minute foreign matter is removed, and it is difficult to reliably remove the residual minute foreign matter attached to the surface of the component. There is also a problem that the grinding media itself remains on the product surface as residual minute foreign matter.
【０００５】したがって、残留微小異物を完全に除去す
るために、部品製造の最終工程として、精密水洗浄工程
を組み入れることが必要不可欠となっていた。この、精
密水洗浄工程は、転がり軸受用部品を水に浸漬し、揺動
しながら超音波を当てるものである。また、必要に応
じ、各部品に直接シャワーをかけたり、噴流リンスで洗
浄度を上げている。しかしながら、かかる精密水洗浄工
程を設けても、部品表面に付着した微小異物が完全に取
れず、残存する場合があった。しかも、異物やごみの影
響は、概して、小型の軸受ほど大きくなるという問題が
あった。Therefore, it has become essential to incorporate a precision water washing step as the final step in the production of parts in order to completely remove the residual fine foreign matter. In the precision water washing step, the rolling bearing component is immersed in water and irradiated with ultrasonic waves while swinging. In addition, if necessary, each part is directly showered or the degree of cleaning is increased by jet rinsing. However, even if such a precision water washing step is provided, there is a case where the minute foreign matter adhering to the component surface cannot be completely removed and remains. In addition, there is a problem that the influence of foreign matter and dust generally increases as the size of the bearing decreases.
【０００６】本発明は上記課題に鑑みてなされたもので
あり、その目的とするところは、軸受用部品の製造にお
ける、残留微小異物の除去をより確実に行うことにあ
る。そして、転がり軸受用の部品においては、部品表面
に残留する微小異物を原因とした、軌道面や転動体に面
荒れや圧痕の発生、それに起因する音響、振動、回転精
度、寿命や信頼性の低下を防止することにある。The present invention has been made in view of the above problems, and an object of the present invention is to more reliably remove residual minute foreign matter in the production of bearing parts. In the case of rolling bearing components, surface irregularities and indentations are generated on raceway surfaces and rolling elements due to minute foreign matter remaining on the component surface, resulting in sound, vibration, rotational accuracy, life and reliability. The purpose is to prevent reduction.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
の、本発明の請求項１に係る微小異物の除去方法は、軸
受用部品の製造における精密水洗浄工程以前に、残留微
小異物に比して低硬度の研削メディアを用いた、残留微
小異物の除去工程を含むことを特徴とする。According to a first aspect of the present invention, there is provided a method for removing minute foreign matter, which comprises removing a minute foreign matter before a precision water washing step in the production of a bearing part. And a step of removing residual minute foreign matter using a low-hardness grinding media.
【０００８】本発明によれば、残留微小異物の除去力を
高めるために、軸受用部品に対するメディアの接触圧を
高めても、メディアの硬度が残留微小異物に比して低硬
度であることにより、軸受用部品の表面に対するダメー
ジを少なく抑えることができる。また、メディアは低硬
度ゆえ、軸受用部品の表面になじみ易く、付着した残留
微小異物の除去に実際に寄与するメディアの割合を、増
大させることができる。According to the present invention, even if the contact pressure of the medium with respect to the bearing component is increased in order to increase the removing power of the residual minute foreign matter, the hardness of the medium is lower than that of the residual minute foreign matter. Thus, damage to the surface of the bearing component can be reduced. Further, since the medium has low hardness, the medium is easily adapted to the surface of the bearing component, and the proportion of the medium that actually contributes to the removal of the adhered residual minute foreign matter can be increased.
【０００９】また、本発明の請求項２に係る微小異物の
除去方法は、前記研削メディアは多様の形状を有するこ
とを特徴とする。本発明によれば、例えば、軸受用部品
に付着する微小異物に対する前記研削メディアの衝突状
態が多様となる、等の理由から、効果的に残留微小異物
を除去することができる。According to a second aspect of the present invention, there is provided a method for removing minute foreign matter, wherein the grinding media has various shapes. According to the present invention, for example, the state of collision of the grinding media with the minute foreign matter adhering to the bearing component becomes diversified, and thus the remaining minute foreign matter can be effectively removed.
【００１０】さらに、本発明の請求項３に係る微小異物
の除去方法は、前記研削メディアはトウモロコシの穂芯
を原材料とするものである。トウモロコシの穂芯は、軸
受用部品の表面に付着する残留異物に比して低硬度であ
ることから、軸受用部品の表面に対するダメージを少な
く抑えることができる。また、トウモロコシの穂芯は、
軸受用部品の表面になじみ易く、付着した残留微小異物
の除去に実際に寄与するメディアの割合を、増大させる
ことができる。さらに、トウモロコシの穂芯は多様の形
状を有するので、効果的に残留微小異物を除去すること
ができる。Further, in the method for removing minute foreign matter according to claim 3 of the present invention, the grinding media is made from corn cob as a raw material. Since the corn cob has a lower hardness than residual foreign matter adhering to the surface of the bearing component, damage to the surface of the bearing component can be reduced. Also, the corn cob
The ratio of the medium that is easily adapted to the surface of the bearing component and that actually contributes to the removal of the attached minute foreign matter can be increased. Further, since the corn cob has various shapes, it is possible to effectively remove the residual minute foreign matter.
【００１１】加えて、本発明の請求項４に係る微小異物
の除去方法は、前記残留微小異物の除去工程において、
バレル研磨機を用いるものである。バレル研磨機によっ
て、前記メディアと軸受用部品とが互いに接触して、軸
受部品に付着している硬い残留微小異物を擦り落した
り、また、前記メディアの軟らかな表面に残留微小異物
が突き刺さり、当該メディア内部に取り込まれて、残留
微小異物は除去される。In addition, in the method for removing minute foreign matter according to claim 4 of the present invention, in the step of removing the remaining minute foreign matter,
A barrel polishing machine is used. By a barrel polisher, the media and the bearing component come into contact with each other to scrape off the hard residual minute foreign matter adhering to the bearing part, or the residual fine foreign matter pierces the soft surface of the medium, The residual minute foreign matter is removed by being taken into the medium.
【００１２】また、本発明の請求項５に係る転がり軸
は、受請求項１から４記載の方法によって残留微小異物
を除去した部品を組み合わせたものである。そして、本
発明に係る転がり軸受は、各部品の残留微小異物が除去
されているので、その使用時に、残留微小異物が原因と
なって、騒音を誘発したり、軌道面や転動体に面荒れや
圧痕を生じ、音響、振動、回転精度、寿命や信頼性に悪
影響を与える虞を少なくすることができる。A rolling shaft according to a fifth aspect of the present invention is a combination of components from which residual minute foreign matter has been removed by the method according to the first to fourth aspects. In the rolling bearing according to the present invention, since the remaining minute foreign matter of each component is removed, at the time of its use, the residual minute foreign matter causes noise or roughening of the raceway surface and the rolling element. And indentations, which can adversely affect the sound, vibration, rotation accuracy, life, and reliability.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態を添付
図面に基づいて説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１４】本発明の実施の形態では、図１に示す転が
り軸受の各構成部品の製造過程において、切削工程１、
熱処理工程２、研削工程３で生ずる材料の金属粉、軸受
部品の組成物の欠落片等、残留微小異物を除去するため
に、精密水洗浄工程５以前に、残留微小異物に比して低
硬度の研削メディアを用いた残留微小異物の除去工程４
を設けている。In the embodiment of the present invention, in the manufacturing process of each component of the rolling bearing shown in FIG.
Before the precision water washing step 5, the hardness is lower than that of the residual fine foreign matter in order to remove residual fine foreign matter such as metal powder of the material generated in the heat treatment step 2 and the grinding step 3 and the chippings of the composition of the bearing part. Removal process 4 of residual fine foreign matter using grinding media
Is provided.
【００１５】ここで用いられる研削メディアは、トウモ
ロコシの穂芯を原材料とし、これを乾燥して粉砕した砕
片である。かかるトウモロコシの穂芯を原材料とするメ
ディア（以下、「穂芯メディア」という。）は、軸受用
部品の表面に付着する残留異物に比して低硬度であるこ
とから、残留微小異物の除去作業時における、転がり軸
受用部品の表面に対するダメージを少なく抑えることが
できる。また、穂芯メディアは、軸受用部品の表面にな
じみ易く、付着した残留微小異物の除去に実際に寄与す
るメディアの割合を、増大させることができる。さら
に、穂芯メディアは多様の形状を有するので、効果的に
残留微小異物を除去することができるという利点があ
る。また、穂芯メディアの代替材料として、木のチッ
プ、ナイロンチップ等も用いることができる。The grinding media used here is a crushed piece obtained by using corn cob as a raw material, drying it and pulverizing it. The media using the corn cob as a raw material (hereinafter referred to as “cob media”) has a lower hardness than the residual contaminants adhering to the surface of the bearing component. At this time, damage to the surface of the rolling bearing component can be reduced. In addition, the cob medium is easily adapted to the surface of the bearing component, and can increase the proportion of the medium that actually contributes to the removal of the attached minute foreign matter. Furthermore, since the cob medium has various shapes, there is an advantage that residual minute foreign matter can be effectively removed. Wood chips, nylon chips, and the like can also be used as alternative materials for the cob media.
【００１６】また、残留微小異物の除去工程４には、バ
レル研磨機を用いる。そして、バレル研磨機によって、
穂芯メディアと転がり軸受用部品とを互いに接触させ
て、転がり軸受用部品に付着している硬い残留微小異物
を擦り落したり、また、穂芯メディアの軟らかな表面に
残留微小異物が突き刺さり、穂芯メディア内部に取り込
まれて、残留微小異物は除去される。さらに、残留微小
異物の除去と同時に、穂芯メディアによって、転がり軸
受用部品の表面を鏡面仕上することも可能となる。A barrel polishing machine is used in the residual fine foreign matter removing step 4. And by the barrel polishing machine,
The cob media and the rolling bearing component are brought into contact with each other to scrape off the hard residual micro foreign material adhering to the rolling bearing component, or the residual micro foreign material pierces the soft surface of the cob media and causes The fine foreign matter remaining in the core medium is removed. Further, the surface of the rolling bearing component can be mirror-finished by the cob media simultaneously with the removal of the remaining minute foreign matter.
【００１７】なお、バレル研磨機としては、遠心流動バ
レルや振動タンブラ等を用いることができる。さらに、
穂芯メディアの砕片を長手方向で分類したサイズ（メッ
シュ）は、転がり軸受用部品の形状・サイズ等に応じ
て、0.2〜0.5、0.5〜1.0、1.5〜1.7、1.7〜2.0、2.0〜
2.4、2.4〜3.2、3.2〜4.0mm等から、適宜選択すること
とする。As a barrel polishing machine, a centrifugal flow barrel, a vibration tumbler, or the like can be used. further,
The size (mesh) of the crushed pieces of the cob media classified in the longitudinal direction is 0.2 to 0.5, 0.5 to 1.0, 1.5 to 1.7, 1.7 to 2.0, 2.0 to 2.0, depending on the shape and size of the rolling bearing parts.
2.4, 2.4 to 3.2, 3.2 to 4.0 mm, etc. are selected as appropriate.
【００１８】残留微小異物の除去工程４では、バレル研
磨機のバレル槽内に、バレル槽の全容積の20〜80％程度
に、転がり軸受用部品と穂芯メディアを充填し、10分か
ら２時間程度、研磨を行う。In the removing step 4 of the residual minute foreign matter, the rolling bearing parts and the cob medium are filled in the barrel tank of the barrel polishing machine to about 20 to 80% of the total volume of the barrel tank, and the mixture is 10 minutes to 2 hours. Polish to the extent.
【００１９】本発明の実施の形態では、図１に示す残留
異物の除去工程４の後、転がり軸受用部品は、精密水洗
浄工程５で水洗や超音波洗浄などによって付着物（主に
穂芯メディア）が除去され、エアーの吹き付けによる乾
燥処理工程６を経て、残留微小異物の除去を完了した転
がり軸受用部品を得ることができる。In the embodiment of the present invention, after the residual foreign matter removing step 4 shown in FIG. 1, the rolling bearing parts are subjected to a precision water washing step 5 by water washing or ultrasonic washing, etc. Media) is removed, and a rolling bearing component from which residual fine foreign matter has been completely removed can be obtained through a drying process 6 by blowing air.
【００２０】そして、以上の方法によって残留微小異物
を除去した部品を組み合わせて、転がり軸受を製造する
ことにより、当該転がり軸受の使用時に、残留微小異物
が原因となって、騒音を誘発したり、軌道面や転動体に
面荒れや圧痕を生じ、音響、振動、回転精度、寿命や信
頼性に悪影響を与える虞を少なくすることができる。By manufacturing the rolling bearing by combining the components from which the residual minute foreign matter has been removed by the above-described method, when the rolling bearing is used, the residual minute foreign matter causes noise, It is possible to reduce the possibility that the raceway surface and the rolling element will have surface roughness and indentation, which will adversely affect sound, vibration, rotation accuracy, life, and reliability.
【００２１】[0021]
【実施例】以下に、転がり軸受用部品の製造工程におい
て、本発明の実施の形態に係る残留異物の除去工程４を
含む場合（本発明の実施の形態）と含まない場合（従来
技術）の、転がり軸受用部品に付着した残留微小異物の
量を比較する。なお、本比較は、以下の方法によるもの
である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following description will be made on a case where a manufacturing process of a rolling bearing component includes a residual foreign matter removing step 4 according to an embodiment of the present invention (embodiment of the present invention) and a case where it is not included (prior art). Then, the amount of the remaining minute foreign matter adhering to the rolling bearing component is compared. This comparison is based on the following method.
【００２２】まず、ビーカーに評価試験片５個を入れ、
清浄な溶剤（代替フロン：AK225）を注ぐ。続いて、ビ
ーカー容器に３分間超音波を照射し、評価試験片から溶
剤中へと残留微小異物を浮遊させる。そして、抽出した
溶剤液中に浮遊する、１μm以上の残留微小異物を、LPC
(Liquid Particle Counter)で計測する。First, five evaluation test pieces were placed in a beaker,
Pour a clean solvent (alternative Freon: AK225). Subsequently, the beaker container is irradiated with ultrasonic waves for 3 minutes to cause the residual fine foreign matter to float from the evaluation test piece into the solvent. Then, the residual microscopic foreign matter of 1 μm or more floating in the extracted solvent
(Liquid Particle Counter).
【００２３】LPCは、半導体レーザーを光源とし、平行
なビームを溶剤液中に照射することで、残留微小異物に
よる光散乱や、僅かに回析を起すことによる受光部にお
ける到達光量の減少分を検出し、設定した径以上の大き
さの、残留微小異物の個数を算出するものである。な
お、測定レンジ（単位：μｍ）は、0.5〜1.0、1.0〜2.
0、2.0〜5.0、5.0〜10、10以上、等から選択することが
できる。そして、LPCによって計数された粒子数を、試
験片の個数（５個）で除した値を、試験片１個当たり
の、残留微小異物の付着数とする。The LPC uses a semiconductor laser as a light source and irradiates a parallel beam into a solvent liquid to reduce the amount of light scattering due to residual minute foreign matter and the decrease in the amount of light reaching the light receiving unit due to slight diffraction. It is to detect and calculate the number of remaining minute foreign substances having a size equal to or larger than the set diameter. The measurement range (unit: μm) is 0.5 to 1.0, 1.0 to 2.
0, 2.0 to 5.0, 5.0 to 10, 10 or more, and the like. Then, the value obtained by dividing the number of particles counted by the LPC by the number (5) of test pieces is defined as the number of adhered residual micro foreign substances per test piece.
【００２４】以上の方法により、本発明の実施の形態と
従来技術との残留微小異物の量を比較した結果、本発明
の実施の形態により得られた試験片は、従来技術に基き
得られた試験片に比して、残留微小異物の量が60％減の
効果が得られることが確認された。As a result of comparing the amount of residual minute foreign matter between the embodiment of the present invention and the prior art by the above method, the test piece obtained according to the embodiment of the present invention was obtained based on the prior art. It was confirmed that the effect of reducing the amount of the residual minute foreign matter by 60% as compared with the test piece was obtained.
【００２５】[0025]
【発明の効果】本発明はこのように構成したので、以下
のような効果を有する。まず、本発明の請求項１に係る
微小異物の除去方法によれば、軸受用部品の製造におけ
る、残留微小異物の除去をより確実に行うことが可能と
なる。そして、転がり軸受の場合には、部品表面に残留
する微小異物を原因とした、軌道面や転動体に面荒れや
圧痕の発生、それに起因する音響、振動、回転精度、寿
命や信頼性の低下を防止して、ハードディスクドライ
ブ、ビデオ、ＯＡ機器、エアコン、クリーナ等の家電製
品、自動車の回転支持部に適した、騒音、振動、寿命に
優れる軸受を提供することができる。According to the present invention, the following effects are obtained. First, according to the method for removing minute foreign matter according to claim 1 of the present invention, it becomes possible to more reliably remove the remaining minute foreign matter in the production of a bearing component. In the case of rolling bearings, surface irregularities and indentations are generated on raceway surfaces and rolling elements due to minute foreign matter remaining on the component surface, resulting in reduced sound, vibration, rotation accuracy, life and reliability. Thus, it is possible to provide a bearing excellent in noise, vibration, and life, which is suitable for a home appliance such as a hard disk drive, a video, an OA device, an air conditioner, a cleaner, and a rotating support portion of an automobile.
【００２６】また、本発明の請求項２に係る微小異物の
除去方法によれば、効果的に残留微小異物を除去するこ
とができ、軸受用部品の製造における、残留微小異物の
除去をより確実に行うことが可能となる。Further, according to the method for removing minute foreign matter according to the second aspect of the present invention, it is possible to effectively remove the remaining minute foreign matter, and it is possible to more reliably remove the remaining minute foreign matter in the production of bearing parts. Can be performed.
【００２７】また、本発明の請求項３に係る微小異物の
除去方法によれば、軸受用部品の表面に対するダメージ
を少なく抑えることができ、かつ、効果的に残留微小異
物を除去することができるので、軸受用部品の製造にお
ける、残留微小異物の除去を確実に行うことが可能とな
る。According to the method for removing minute foreign matter according to the third aspect of the present invention, damage to the surface of the bearing component can be reduced, and the remaining minute foreign matter can be effectively removed. Therefore, it is possible to reliably remove the residual minute foreign matter in the production of the bearing component.
【００２８】また、本発明の請求項４に係る微小異物の
除去方法によれば、前記メディアと軸受用部品とが互い
に接触して、軸受部品に付着している硬い残留微小異物
を擦り落し、また、前記メディアの軟らかな表面に残留
微小異物が突き刺さり、当該メディア内部に取り込まれ
て、残留微小異物を除去することにより、軸受用部品の
製造における、残留微小異物の除去を確実に行うことが
可能となる。Further, according to the method for removing minute foreign matter according to claim 4 of the present invention, the medium and the bearing part come into contact with each other to scrape off the hard residual minute foreign matter adhering to the bearing part, In addition, by removing the remaining minute foreign matter into the soft surface of the medium and piercing it into the medium and removing the remaining minute foreign matter, it is possible to reliably remove the remaining minute foreign matter in the production of the bearing component. It becomes possible.
【００２９】また、本発明の請求項５に係る転がり軸受
によれば、部品表面に残留する微小異物を原因とした、
軌道面や転動体に面荒れや圧痕の発生、それに起因する
音響、振動、回転精度、寿命や信頼性の低下を防止し
て、ハードディスクドライブ、ビデオ、ＯＡ機器、エア
コン、クリーナ等の家電製品、自動車の回転支持部に適
した、騒音、振動、寿命に優れる軸受を提供することが
できる。Further, according to the rolling bearing according to the fifth aspect of the present invention, it is possible to minimize the occurrence of minute foreign matter remaining on the surface of the component.
To prevent the generation of surface roughness and indentation on the raceway surface and rolling elements, and the resulting decrease in sound, vibration, rotation accuracy, life and reliability, and home appliances such as hard disk drives, videos, OA equipment, air conditioners, and cleaners. A bearing excellent in noise, vibration, and life, which is suitable for a rotating support portion of an automobile, can be provided.
【図１】本発明の実施の形態における、転がり軸受の各
構成部品の製造過程を示すフローチャートである。FIG. 1 is a flowchart showing a manufacturing process of each component of a rolling bearing according to an embodiment of the present invention.
１ 切削工程 ２ 熱処理工程 ３ 研削工程 ４ 残留微小異物の除去工程 ５ 精密水洗浄工程 ６ 乾燥処理工程 DESCRIPTION OF SYMBOLS 1 Cutting process 2 Heat treatment process 3 Grinding process 4 Removal process of residual minute foreign matter 5 Precision water washing process 6 Drying process
フロントページの続き Ｆターム(参考） 3C058 AA01 AA09 CB02 CB06 DA02 3J017 HA02 3J101 AA01 DA11 FA01 FA31 FA60 GA53 Continued on the front page F term (reference) 3C058 AA01 AA09 CB02 CB06 DA02 3J017 HA02 3J101 AA01 DA11 FA01 FA31 FA60 GA53
Claims (5)
程以前に、残留微小異物に比して低硬度の研削メディア
を用いた、残留微小異物の除去工程を含むことを特徴と
する微小異物の除去方法。1. A method for removing minute foreign matter, which comprises a step of removing residual minute foreign matter using a grinding media having a hardness lower than that of the remaining minute foreign matter before the precision water washing step in the production of a bearing part. Removal method.
ことを特徴とする請求項１記載の微小異物の除去方法。2. The method according to claim 1, wherein the grinding media has various shapes.
を原材料とすることを特徴とする請求項１または２記載
の微小異物の除去方法。3. The method according to claim 1, wherein the grinding media is made of corn cob as a raw material.
バレル研磨機を用いることを特徴とする請求項１から３
のいずれか１項記載の微小異物の除去方法。4. In the step of removing the residual minute foreign matter,
4. The method according to claim 1, wherein a barrel polishing machine is used.
The method for removing minute foreign matter according to any one of the above items.
微小異物を除去した部品を組み合わせた転がり軸受。5. A rolling bearing in which components from which residual minute foreign matter has been removed by the method according to claim 1 are combined.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000387339A JP2002187058A (en) | 2000-12-20 | 2000-12-20 | Method for removing minute foreign matters and rolling bearing |
| US09/987,736 US20020077033A1 (en) | 2000-12-20 | 2001-11-15 | Method for removing fine foreign matters, and rolling bearing using the same |
| US10/934,465 US20050028368A1 (en) | 2000-12-20 | 2004-09-07 | Method for removing fine foreign matter, and rolling bearing using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000387339A JP2002187058A (en) | 2000-12-20 | 2000-12-20 | Method for removing minute foreign matters and rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002187058A true JP2002187058A (en) | 2002-07-02 |
Family
ID=18854290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000387339A Pending JP2002187058A (en) | 2000-12-20 | 2000-12-20 | Method for removing minute foreign matters and rolling bearing |
Country Status (2)
| Country | Link |
|---|---|
| US (2) | US20020077033A1 (en) |
| JP (1) | JP2002187058A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009018361A (en) * | 2007-07-10 | 2009-01-29 | Kobe Steel Ltd | Apparatus for removing wire drawing lubricant existing on traveling metal wire body |
| WO2014184838A1 (en) * | 2013-05-13 | 2014-11-20 | トヨタ自動車株式会社 | Endless metal ring manufacturing method and endless metal ring resin removal device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6910948B2 (en) * | 2001-09-27 | 2005-06-28 | Nsk Ltd. | Needle bearing and method for grinding bearing parts thereof |
| US20100088897A1 (en) * | 2008-10-09 | 2010-04-15 | Roller Bearing Company Of America, Inc. | Finishing process for bearing components |
| CN102528632A (en) * | 2012-03-06 | 2012-07-04 | 青岛征和工业有限公司 | Method for removing burr on surface of precision stamped part by rolling/polishing treatment |
| CN102765013B (en) * | 2012-07-04 | 2014-12-31 | 高要市东颖石艺有限公司 | Polishing method for irregular marble surface |
| JP2017160962A (en) * | 2016-03-08 | 2017-09-14 | セイコーインスツル株式会社 | Manufacturing method of bearing for pivot, manufacturing method of pivot and manufacturing device |
| CN106425337A (en) * | 2016-12-28 | 2017-02-22 | 贵州虹轴轴承有限公司 | Bearing machining process |
| CN110253420B (en) * | 2019-06-21 | 2020-05-22 | 张素烨 | Metal powder grinding device |
| CN112454018B (en) * | 2020-12-04 | 2022-03-25 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Grinding production method of tapered roller bearing |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3613317A (en) * | 1967-05-26 | 1971-10-19 | Minnesota Mining & Mfg | Media for finishing plastics and soft metals |
| US3571861A (en) * | 1968-11-26 | 1971-03-23 | Famco Inc | Bag closure means |
| US4963037A (en) * | 1989-06-23 | 1990-10-16 | Giancarlo Manerba | Container for loose products in general, provided with raising means, adapted to be stored either in a horizontal or in a vertical position |
| US5236134A (en) * | 1991-11-05 | 1993-08-17 | Envirocycle Incorporated | Method of reclaiming glass from articles formed of leaded glass |
| US5308404A (en) * | 1993-01-21 | 1994-05-03 | Church & Dwight Co., Inc. | Less aggressive blast media formed from compacted particles |
| US5447465A (en) * | 1993-08-19 | 1995-09-05 | United States Surgical Corporation | Method of treating needle blanks |
| JP4035581B2 (en) * | 1995-07-12 | 2008-01-23 | 日本エア・リキード株式会社 | Inner surface treatment method for high pressure gas containers |
| US6220947B1 (en) * | 1997-09-05 | 2001-04-24 | General Electric Company | Tumble medium and method for surface treatment |
| ES2180342T3 (en) * | 1999-01-05 | 2003-02-01 | Alcon Lab Inc | LOW TEMPERATURE POLISHING METHOD FOR WHITE ACRYLIC ITEMS. |
-
2000
- 2000-12-20 JP JP2000387339A patent/JP2002187058A/en active Pending
-
2001
- 2001-11-15 US US09/987,736 patent/US20020077033A1/en not_active Abandoned
-
2004
- 2004-09-07 US US10/934,465 patent/US20050028368A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009018361A (en) * | 2007-07-10 | 2009-01-29 | Kobe Steel Ltd | Apparatus for removing wire drawing lubricant existing on traveling metal wire body |
| WO2014184838A1 (en) * | 2013-05-13 | 2014-11-20 | トヨタ自動車株式会社 | Endless metal ring manufacturing method and endless metal ring resin removal device |
| JPWO2014184838A1 (en) * | 2013-05-13 | 2017-02-23 | トヨタ自動車株式会社 | Endless metal ring manufacturing method and endless metal ring resin removing device |
| KR101766566B1 (en) * | 2013-05-13 | 2017-08-08 | 도요타지도샤가부시키가이샤 | Endless metal ring manufacturing method and endless metal ring resin removal device |
| US10843245B2 (en) | 2013-05-13 | 2020-11-24 | Toyota Jidosha Kabushiki Kaisha | Endless metal ring manufacturing method and endless metal ring resin removal device |
| US10926310B2 (en) | 2013-05-13 | 2021-02-23 | Toyota Jidosha Kabushiki Kaisha | Endless metal ring manufacturing method and endless metal ring resin removal device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20050028368A1 (en) | 2005-02-10 |
| US20020077033A1 (en) | 2002-06-20 |
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