JPH06280880A - Manufacture of hollow ball for bearing - Google Patents
Manufacture of hollow ball for bearingInfo
- Publication number
- JPH06280880A JPH06280880A JP34154993A JP34154993A JPH06280880A JP H06280880 A JPH06280880 A JP H06280880A JP 34154993 A JP34154993 A JP 34154993A JP 34154993 A JP34154993 A JP 34154993A JP H06280880 A JPH06280880 A JP H06280880A
- Authority
- JP
- Japan
- Prior art keywords
- ball
- core material
- hollow
- bearing
- rolling
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000011162 core material Substances 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 10
- 238000005096 rolling process Methods 0.000 abstract description 9
- 238000005245 sintering Methods 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000011368 organic material Substances 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 229920006248 expandable polystyrene Polymers 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000013585 weight reducing agent Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ベアリング用の中空球
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 method of manufacturing hollow spheres for bearings.
【０００２】[0002]
【従来の技術】機械設備の軽薄短小化においてもベアリ
ング球は、その構造から大幅な改善が進まず、軽量化の
ための多孔質化、或いは軽量物質への素材変更等が試み
られているが、強度の問題や他の部品による大きさの制
約等から問題点が多いのである。また、中空状のころが
り軸受用転動体として、二つの対称型のわん形部材を形
成して溶接で結合したもの、或いは金属粉末の内部に有
機芯材を埋め込んで圧縮成形した後、焼結させて芯材を
焼失して中空球としたものが公知であるが、これらはい
ずれも研削，研磨による整形を要すると共に、一個づつ
形成されるため量産できず手間のかかるものであった。2. Description of the Related Art Even when mechanical equipment is made lighter, thinner, shorter and smaller, the structure of bearing balls has not improved significantly, and attempts have been made to make them porous for weight reduction or to change materials to light weight substances. However, there are many problems due to strength problems and size restrictions due to other parts. In addition, as a hollow rolling element for rolling bearing, one formed by forming two symmetrical trapezoidal members and joined by welding, or by embedding an organic core material in the inside of metal powder, compression molding, and then sintering. It is known that the core material is burned down to form hollow spheres, but all of them require shaping by grinding and polishing, and since they are formed one by one, they cannot be mass-produced, which is troublesome.
【０００３】[0003]
【発明が解決しようとする課題】そこで本発明は、特に
強い強度を必要としない自転車、ＯＡ機器等の軽工業の
ベアリング球として有効であり、量産性に富んで極めて
実用的な中空球の製造方法を提供するものである。Therefore, the present invention is effective as a bearing ball for light industries such as bicycles and OA equipment which does not require particularly strong strength, and is a highly practical method for producing a hollow sphere with high mass productivity. Is provided.
【０００４】[0004]
【課題を解決するための手段】このため本発明は、有機
物質から成る芯材の外周に金属又はセラミックスの粉体
を転動被覆して造形し、加熱して該芯材を除去すると共
に、金属又はセラミックスの粉体を焼結して中空状と成
すベアリング用中空球の製造方法である。Therefore, according to the present invention, the outer periphery of a core material made of an organic substance is rolling-coated with a powder of metal or ceramics to be shaped, and the core material is removed by heating, This is a method for manufacturing a hollow sphere for a bearing, which is formed by sintering a powder of metal or ceramics into a hollow shape.
【０００５】[0005]
【作用】有機物質の芯材の外周に金属又はセラミックス
の粉体を転動被覆し、これを焼成することで芯材が焼失
すると共に、中空状の金属又はセラミックスの中空球が
焼結形成されるのであり、金属又はセラミックスの粉体
を転動被覆する造形法のため量産性に富み、且つ良形の
形状とすることができる。[Function] The outer periphery of the core material made of an organic substance is rolling-coated with a powder of metal or ceramics, and by burning this, the core material is burned down, and hollow spheres of hollow metal or ceramics are formed by sintering. Since it is a molding method in which a powder of metal or ceramics is rolling-coated, the mass production is excellent and a good shape can be obtained.
【０００６】[0006]
【実施例】以下、本発明の詳細を図面を参照しながら説
明する。図１で示す未焼成のベアリング球は、発泡ポリ
スチレンを素材として直径２mmの球形芯材１を形成し、
この芯材１の外周にジルコニア２の粉体を転動被覆接着
して直径３mmの球形に造形し、ついで１４５０゜Ｃで焼
成することにより芯材１が焼失して除去されるため、図
２のように、内部が中空状１０となった直径約２．５mm
のジルコニア２の焼結球が形成されるのである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. The unsintered bearing spheres shown in Fig. 1 are made of expanded polystyrene to form a spherical core material 1 with a diameter of 2 mm.
Since the powder of zirconia 2 is adhered to the outer periphery of the core material 1 by rolling coating to form a spherical shape having a diameter of 3 mm, and then baked at 1450 ° C., the core material 1 is burned and removed. As shown in the figure, the inside has a hollow 10 diameter of about 2.5 mm.
Sintered spheres of zirconia 2 are formed.
【０００７】本例方法によると、大きさを従来と同一と
しても軽量化となるものであり、それを使用した製品の
軽量化が図れると共に、重量に比例する摩耗率も小さく
なって耐久性が向上するのである。なお、図３に本例に
より得られた中空球と別の中実球との比較例を示す。According to the method of this example, the weight can be reduced even if the size is the same as the conventional one, and the weight reduction of the product using the weight reduction can be achieved, and the wear rate proportional to the weight can be reduced, and the durability can be improved. It will improve. Note that FIG. 3 shows a comparative example of the hollow sphere obtained in this example and another solid sphere.
【０００８】本例方法は前記のような製造方法とした
が、本発明においてはこれに限定されない。例えば、ベ
アリング中空球の材質はジネコニアの他、窒化珪素等の
セラミックスに限定されず、鉄や鋼等の金属でもよい。Although the method of this example is the manufacturing method as described above, the present invention is not limited to this. For example, the material of the bearing hollow sphere is not limited to ceramics such as silicon nitride other than Zineconia, and may be metal such as iron or steel.
【０００９】また、芯材も任意であり、ポリスチレンの
他、ポリウレタン等の有機物質が使用できるのである。
さらに、大きさも適宜であるが、直径２〜１５mmが妥当
で、中空径割合３０〜９０％が最適である。The core material is also optional, and in addition to polystyrene, organic materials such as polyurethane can be used.
Further, the size is also appropriate, but a diameter of 2 to 15 mm is appropriate, and a hollow diameter ratio of 30 to 90% is optimum.
【００１０】[0010]
【発明の効果】本発明方法によると、有機物質の焼失に
より中空軽量のベアリング球となり、金属又はセラミッ
クスの粉体を転動被覆して造形するため量産性に富むと
共に、良形の均一な球状に成形できることから整形のた
めの研削研磨工程を要しない効果が大きく、軽工業のベ
アリング球として極めて有効である。EFFECTS OF THE INVENTION According to the method of the present invention, a hollow and lightweight bearing sphere is formed by burning out an organic substance, and the powder is coated with metal or ceramics to form a rolling coating, which is excellent in mass productivity and has a good and uniform spherical shape. Since it can be molded into a large shape, it has a great effect of not requiring a grinding and polishing step for shaping, and is extremely effective as a bearing ball for light industry.
【図１】本発明を説明するための一実施例の一部切欠正
面図である。FIG. 1 is a partially cutaway front view of an embodiment for explaining the present invention.
【図２】その焼結前の一部切欠正面図である。FIG. 2 is a partially cutaway front view before the sintering.
【図３】摩耗率の比較表である。FIG. 3 is a comparison table of wear rates.
１ 芯材 １０ 中空状 ２ ジルコニア 1 Core 10 Hollow 2 Zirconia
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大島 晃 愛知県瀬戸市川端町３丁目30番地 株式会 社陶研産業内 (72)発明者 田中 敬 愛知県瀬戸市川端町３丁目30番地 株式会 社陶研産業内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Akira Oshima, 3-30 Kawabata-cho, Seto-shi, Aichi Stock Company, Token Industrial Co., Ltd. (72) Inventor, Kei Tanaka, 3--30 Kawabata-cho, Seto, Aichi Inside the company's laboratory
Claims (1)
セラミックスの粉体を転動被覆して造形し、加熱して該
芯材を除去すると共に、金属又はセラミックスの粉体を
焼結して中空状と成すことを特徴とするベアリング用中
空球の製造方法。1. An outer periphery of a core material made of an organic substance is roll-coated with a powder of metal or ceramics to be shaped and heated to remove the core material, and at the same time, the powder of metal or ceramics is sintered. A method for manufacturing a hollow sphere for a bearing, which is characterized in that it is formed into a hollow shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34154993A JPH06280880A (en) | 1993-12-11 | 1993-12-11 | Manufacture of hollow ball for bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34154993A JPH06280880A (en) | 1993-12-11 | 1993-12-11 | Manufacture of hollow ball for bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06280880A true JPH06280880A (en) | 1994-10-07 |
Family
ID=18346934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34154993A Pending JPH06280880A (en) | 1993-12-11 | 1993-12-11 | Manufacture of hollow ball for bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06280880A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1003141C2 (en) * | 1996-05-15 | 1997-11-18 | Skf Ind Trading & Dev | Rolling bearing with improved wear characteristics, and rolling element for such a bearing. |
| EP0807762A1 (en) * | 1996-05-15 | 1997-11-19 | SKF Industrial Trading & Development Company, B.V. | Rolling bearing element comprising a zirconium material |
| US6325027B1 (en) * | 1999-05-28 | 2001-12-04 | Sinus Holding As | Bearing arrangement |
| KR100428075B1 (en) * | 2001-02-08 | 2004-04-27 | 이부락 | method manufacture bearing of prevention rust |
| KR100894591B1 (en) * | 2002-12-09 | 2009-04-24 | 재단법인서울대학교산학협력재단 | Preparation of Hollow Palladium Catalysts |
| JP2010001985A (en) * | 2008-06-20 | 2010-01-07 | Ntn Corp | Rolling bearing |
| KR100943826B1 (en) * | 2007-11-12 | 2010-02-25 | 성균관대학교산학협력단 | Method for manufacturing metal hollow sphere |
| WO2010067967A2 (en) * | 2008-12-08 | 2010-06-17 | 가야에이엠에이 주식회사 | Metallic hollow sphere bodies, method for producing metallic hollow sphere bodies, lightweight structural components, and method for producing lightweight structural components |
| US11028015B2 (en) | 2017-07-04 | 2021-06-08 | AGC Inc. | Glass ball having specific Young's modulus and coefficient of thermal expansion |
| WO2021158473A1 (en) | 2020-02-04 | 2021-08-12 | Schaeffler Technologies AG & Co. KG | Ceramic rolling element with skeletal structure |
| WO2021158472A1 (en) | 2020-02-04 | 2021-08-12 | Schaeffler Technologies AG & Co. KG | Additive manufacturing of hollow or partially hollow rolling elements |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4935482A (en) * | 1972-08-08 | 1974-04-02 | ||
| JPS61197487A (en) * | 1985-02-22 | 1986-09-01 | 株式会社 陶研産業 | Antiabrasive sintered sphere |
-
1993
- 1993-12-11 JP JP34154993A patent/JPH06280880A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4935482A (en) * | 1972-08-08 | 1974-04-02 | ||
| JPS61197487A (en) * | 1985-02-22 | 1986-09-01 | 株式会社 陶研産業 | Antiabrasive sintered sphere |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1003141C2 (en) * | 1996-05-15 | 1997-11-18 | Skf Ind Trading & Dev | Rolling bearing with improved wear characteristics, and rolling element for such a bearing. |
| EP0807762A1 (en) * | 1996-05-15 | 1997-11-19 | SKF Industrial Trading & Development Company, B.V. | Rolling bearing element comprising a zirconium material |
| EP0807761A1 (en) * | 1996-05-15 | 1997-11-19 | SKF Industrial Trading & Development Company, B.V. | Rolling element bearing having improved wear characteristics, and rolling element for such bearing |
| US5967670A (en) * | 1996-05-15 | 1999-10-19 | Skf Industrial Trading & Development Company B.V. | Rolling element bearing having at least one rolling element having a hardness greater than the hardness of the other rolling elements |
| US6325027B1 (en) * | 1999-05-28 | 2001-12-04 | Sinus Holding As | Bearing arrangement |
| KR100428075B1 (en) * | 2001-02-08 | 2004-04-27 | 이부락 | method manufacture bearing of prevention rust |
| KR100894591B1 (en) * | 2002-12-09 | 2009-04-24 | 재단법인서울대학교산학협력재단 | Preparation of Hollow Palladium Catalysts |
| KR100943826B1 (en) * | 2007-11-12 | 2010-02-25 | 성균관대학교산학협력단 | Method for manufacturing metal hollow sphere |
| JP2010001985A (en) * | 2008-06-20 | 2010-01-07 | Ntn Corp | Rolling bearing |
| WO2010067967A2 (en) * | 2008-12-08 | 2010-06-17 | 가야에이엠에이 주식회사 | Metallic hollow sphere bodies, method for producing metallic hollow sphere bodies, lightweight structural components, and method for producing lightweight structural components |
| WO2010067967A3 (en) * | 2008-12-08 | 2010-08-05 | 가야에이엠에이 주식회사 | Metallic hollow sphere bodies, method for producing metallic hollow sphere bodies, lightweight structural components, and method for producing lightweight structural components |
| US11028015B2 (en) | 2017-07-04 | 2021-06-08 | AGC Inc. | Glass ball having specific Young's modulus and coefficient of thermal expansion |
| WO2021158473A1 (en) | 2020-02-04 | 2021-08-12 | Schaeffler Technologies AG & Co. KG | Ceramic rolling element with skeletal structure |
| WO2021158472A1 (en) | 2020-02-04 | 2021-08-12 | Schaeffler Technologies AG & Co. KG | Additive manufacturing of hollow or partially hollow rolling elements |
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