JPH1026142A - Slide member for bearing - Google Patents
Slide member for bearingInfo
- Publication number
- JPH1026142A JPH1026142A JP8203291A JP20329196A JPH1026142A JP H1026142 A JPH1026142 A JP H1026142A JP 8203291 A JP8203291 A JP 8203291A JP 20329196 A JP20329196 A JP 20329196A JP H1026142 A JPH1026142 A JP H1026142A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- carbon fiber
- composite material
- sliding member
- sliding
- 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
Landscapes
- Rolling Contact Bearings (AREA)
- Ceramic Products (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は荷重を受けた状態で
相対的な滑りを伴う摺動部材であって軸受及びその受け
部材を構成する軸受用摺動部材に関し、特に炭素繊維強
化炭素複合材料(以下C/Cコンポジット材ともいう)
で形成されたものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding member which undergoes relative sliding under a load, and more particularly to a bearing and a sliding member for a bearing which constitutes the receiving member, and more particularly to a carbon fiber reinforced carbon composite material. (Hereinafter also referred to as C / C composite material)
With respect to those formed in
【0002】[0002]
【従来の技術】近年、高温域で無潤滑に近い状態で、更
に腐食性雰囲気下にあり、加えて機械的強度も求められ
る軸受が最近になって求められるようになった。2. Description of the Related Art In recent years, bearings which are not lubricated in a high temperature range, are further in a corrosive atmosphere, and are required to have high mechanical strength have recently been required.
【0003】高温領域では流体潤滑剤は使用できず、ま
た固体潤滑剤は流動性や濡れ性がなく取扱い難いため、
自己潤滑性を有する黒鉛材料を軸受用摺動部材に用いる
ことが検討されている。この黒鉛材料は、潤滑性、非溶
融性、熱伝導性、耐熱性、耐腐食性が良く、熱膨張係数
が小さいという優れた性質を有しているため、上記条件
を満たす軸受用摺動部材として使用可能である。[0003] Fluid lubricants cannot be used in the high temperature range, and solid lubricants are difficult to handle because they have neither fluidity nor wettability.
It has been studied to use a graphite material having self-lubricating properties for a sliding member for a bearing. Since this graphite material has excellent properties such as good lubricity, non-melting property, heat conductivity, heat resistance, and corrosion resistance and a small coefficient of thermal expansion, it is a sliding member for a bearing that satisfies the above conditions. Can be used as
【0004】[0004]
【発明を解決しようとする課題】しかし、黒鉛材料は機
械的強度が低いため、使用の際には金属で補強したり、
金属を含浸するなど機械的強度を増加させる必要があ
る。そこで、同じような炭素材料であるものの、その機
械的強度を高めたC/Cコンポジット材を使用すること
も考えられる。ところが、C/Cコンポジット材は炭素
繊維で補強されているため、その物理的・機械的性質に
は異方性があり、更に使用する炭素繊維によって潤滑性
が異なるため、そのままでは使用できないという問題点
があった。However, graphite materials have low mechanical strength, so they are reinforced with metal when used.
It is necessary to increase the mechanical strength by impregnating the metal. Therefore, it is conceivable to use a C / C composite material having the same carbon material but having increased mechanical strength. However, since the C / C composite material is reinforced with carbon fibers, its physical and mechanical properties have anisotropy, and the lubricating properties differ depending on the carbon fibers used. There was a point.
【0005】そこで、本発明のうち請求項1記載の発明
は、C/Cコンポジット材の優れた性質を生かしつつそ
の異方性を考慮し、摺動方向での滑り性を高めた軸受用
摺動部材を提供することを目的とする。請求項2記載の
発明は、請求項1記載の発明の目的に加えて、C/Cコ
ンポジット材に使われる炭素繊維の材質などを適切にし
て、摺動方向での滑り性を更に高めた軸受用摺動部材を
提供することを目的とする。Accordingly, the present invention according to claim 1 of the present invention provides a bearing slide having improved slipperiness in a sliding direction in consideration of the anisotropy thereof while taking advantage of the excellent properties of the C / C composite material. It is an object to provide a moving member. According to a second aspect of the present invention, in addition to the object of the first aspect, the bearing is further improved in the sliding direction in the sliding direction by appropriately setting the material of the carbon fiber used for the C / C composite material. It is intended to provide a sliding member for use.
【0006】[0006]
【課題を解決するための手段】前述した目的を達成する
ために、本発明のうちで請求項1記載の発明は、荷重を
受けた状態で相対的な滑りを伴う摺動部材であって軸受
及びその受け部材を構成する軸受用摺動部材において、
前記摺動部材を炭素繊維強化炭素複合材料によって形成
し、前記炭素繊維強化炭素複合材料における炭素繊維は
二次元に配設されたものを積層したものであり、前記二
次元の面と略平行な面又は前記二次元の二方向のうちの
いずれかと略平行な方向に前記摺動部材の摺動面が配設
されていることを特徴とするものである。二次元に配設
された炭素繊維(2D織物)の二次元の面と略平行な面
(図7(a)の如く網目と平行なA1,A2方向、また
は、図7(b)の如く網目と交差するA1′,A2′方
向)に摺動面を形成すると、最も摩擦係数が低くなる。
二次元に配設された炭素繊維(2D織物)の二次元の二
方向のうちいずれかと平行な方向(図7(c)のB1,
B2,B3,B4)の方向と略平行な方向に摺動面を形
成すると、次に摩擦係数が低くなる。更に、積層された
CFクロスの厚さ方向(図7(d)のC1,C2,C
3,C4)と略平行な方向に摺動面を形成すると最も摩
擦係数が大きくなる。なお、二次元の面と略平行な面と
は、2D織物になった炭素繊維が曲面(例えば円周内
面)であり、この曲面に沿った状態も含むものである。
同様に、二次元の二方向のうちのいずれかと略平行な方
向とは、炭素繊維が曲面方向(例えば円周方向)に配設
されており、この曲面方向に沿った状態を含むものであ
る。In order to achieve the above-mentioned object, an invention according to claim 1 of the present invention is a sliding member having a relative slip under a load and comprising a bearing. And a sliding member for a bearing constituting the receiving member,
The sliding member is formed of a carbon fiber reinforced carbon composite material, and carbon fibers in the carbon fiber reinforced carbon composite material are obtained by laminating two-dimensionally arranged carbon fibers, and are substantially parallel to the two-dimensional plane. A sliding surface of the sliding member is provided in a direction substantially parallel to one of a surface and the two-dimensional two directions. A plane substantially parallel to the two-dimensional plane of the two-dimensionally arranged carbon fibers (2D woven fabric) (A1, A2 directions parallel to the mesh as shown in FIG. 7A, or a mesh as shown in FIG. 7B) When the sliding surface is formed in the directions A1 'and A2' intersecting with each other, the coefficient of friction becomes lowest.
A direction parallel to one of the two-dimensional directions of the two-dimensionally arranged carbon fibers (2D woven fabric) (B1, B1 in FIG. 7C).
If the sliding surface is formed in a direction substantially parallel to the direction of (B2, B3, B4), the coefficient of friction will decrease next. Further, in the thickness direction of the laminated CF cloth (C1, C2, C
When the sliding surface is formed in a direction substantially parallel to (3, C4), the friction coefficient becomes the largest. In addition, the surface substantially parallel to the two-dimensional surface is a curved surface (for example, an inner circumferential surface) of a carbon fiber formed into a 2D woven fabric, and includes a state along the curved surface.
Similarly, the direction substantially parallel to any one of the two-dimensional two directions includes a state in which the carbon fibers are arranged in a curved surface direction (for example, a circumferential direction) and along the curved surface direction.
【0007】また請求項2記載の発明は、請求項1記載
の発明における前記炭素繊維が異方性ピッチ系炭素繊維
であるものである。異方性ピッチ系炭素繊維は石油・石
炭を出発物質として製造されたものであり、結晶化が進
んでおり、磨耗粉が膜状になり、この膜によって耐磨耗
性がよくなる。According to a second aspect of the present invention, the carbon fibers in the first aspect of the present invention are anisotropic pitch-based carbon fibers. The anisotropic pitch-based carbon fiber is manufactured using petroleum or coal as a starting material, is being crystallized, and the abrasion powder is formed into a film. This film improves abrasion resistance.
【0008】また請求項3記載の発明は、請求項1記載
の発明における前記炭素繊維がPAN系炭素繊維であ
り、その結晶化度が学振法によるX線回析の面間隔d
(002)が3.45以下であるものである。PAN系
炭素繊維はポリアクリロニトリルを出発物質として製造
されたものであり、そのままでは結晶化度が低いため、
2D織物に形成後に2000°C以上で熱処理をしてd
(002)が3.45以下になるように結晶化度を高め
る。According to a third aspect of the present invention, in the first aspect of the present invention, the carbon fiber is a PAN-based carbon fiber, and the crystallinity of the carbon fiber is determined by an X-ray diffraction plane spacing d by Gakushin method.
(002) is 3.45 or less. The PAN-based carbon fiber is manufactured using polyacrylonitrile as a starting material, and has a low crystallinity as it is,
After forming into 2D fabric, heat-treat at 2000 ° C or more and d
The crystallinity is increased so that (002) becomes 3.45 or less.
【0009】[0009]
【発明の実施の形態】本発明の実施の形態を、図示例と
ともに説明する。図1は本発明の軸受用摺動部材が組み
込まれた玉軸受の斜視図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to illustrated examples. FIG. 1 is a perspective view of a ball bearing in which the bearing sliding member of the present invention is incorporated.
【0010】図1において、1は軸受本体、2はその受
け部材であり、これらによって軸受が構成される。軸受
本体1は、外輪3と内輪4との間に転動体を保持する保
持器5が配設されたものである。受け部材2は軸受本体
1を保持するものの、受け部材2に対して矢印の方向
に軸受本体1が摺動可能になっており、軸受本体1に嵌
入される軸の調芯機能が確保される構造になっている。In FIG. 1, reference numeral 1 denotes a bearing body, and 2 denotes a receiving member thereof, and these constitute a bearing. The bearing body 1 has a retainer 5 that holds a rolling element between an outer ring 3 and an inner ring 4. Although the receiving member 2 holds the bearing main body 1, the bearing main body 1 is slidable in the direction of the arrow with respect to the receiving member 2, and the centering function of the shaft inserted into the bearing main body 1 is secured. It has a structure.
【0011】図示の軸受の例では、受け部材2と保持器
5とにC/Cコンポジット材が使用されている。まず、
受け部材2は、二次元に配設された炭素繊維クロス7
(2D織物)を円周に沿って配設し、更に径方向に積層
したものである。すなわち、矢印の如き外輪3の摺動
方向は、2D織物7の二次元の面と略平行方向な面であ
り、摩擦係数が最も低くなって好ましい。この場合、2
D織物7の織り方は、平織り、朱子織り、綾織り、その
他二次元の織り方であればよい。また、炭素繊維クロス
を受け部材2の厚さ方向に積層する場合は、図7(c)
のようにB1,B2の方向を図1の矢印に一致させる
ようにすると、2次元の方向と平行な方向と略平行な方
向に摺動面が形成され、次いで摩擦係数が低くなる。In the illustrated example of a bearing, a C / C composite material is used for the receiving member 2 and the retainer 5. First,
The receiving member 2 is a carbon fiber cloth 7 arranged two-dimensionally.
(2D woven fabric) are arranged along the circumference and further laminated in the radial direction. That is, the sliding direction of the outer ring 3 as indicated by the arrow is a surface substantially parallel to the two-dimensional surface of the 2D fabric 7, and is preferably the lowest in friction coefficient. In this case, 2
The weave of the D fabric 7 may be a plain weave, a satin weave, a twill weave, or any other two-dimensional weave. When the carbon fiber cloth is laminated in the thickness direction of the receiving member 2, FIG.
When the directions of B1 and B2 are made to coincide with the arrows in FIG. 1, the sliding surface is formed in a direction substantially parallel to the direction parallel to the two-dimensional direction, and then the friction coefficient decreases.
【0012】図2は、玉軸受に使用する保持器の一例を
示す。ここで、保持輪5は軸方向に二つ割りとなったも
のを締結部材で一体にしたものであり、二つ割りの中に
転動体6を保持する球面座が形成されている。転動体6
は図示されない外輪3と内輪4との間の相対回転によっ
て、保持輪5に対して矢印の方向に滑る。この保持輪
5は二次元に配設された炭素繊維クロス7(2D織物)
の平面を軸直角な方向に並べ、軸方向に積層したもので
ある。転動体6が摺動する矢印方向は、二次元の二方
向のうちのいずれかと略平行な方向であり、図7(c)
のB1,B2,B3またはB4により、転動体6と接触
が生じ摩擦係数が低くなる。また、この矢印の回転軸
方向即ち円柱状の転動体の端面で保持輪と接触を生じる
場合には図7(a)のA1,A2より接触を生じ更に摩
擦係数が低い。FIG. 2 shows an example of a cage used for a ball bearing. Here, the retaining wheel 5 is obtained by integrating the axially divided two with a fastening member, and a spherical seat for holding the rolling element 6 is formed in the divided two. Rolling element 6
Slides in the direction of the arrow with respect to the holding wheel 5 by the relative rotation between the outer ring 3 and the inner ring 4 (not shown). This retaining ring 5 is a carbon fiber cloth 7 (2D woven fabric) arranged two-dimensionally.
Are arranged in a direction perpendicular to the axis and stacked in the axial direction. The direction of the arrow in which the rolling element 6 slides is a direction substantially parallel to any one of the two directions in two dimensions, and is shown in FIG.
Due to B1, B2, B3 or B4, contact with the rolling element 6 occurs and the coefficient of friction is reduced. Further, when contact occurs with the retaining ring in the direction of the rotation axis of the arrow, that is, in the end face of the cylindrical rolling element, the contact occurs more than A1 and A2 in FIG.
【0013】図3はスラスト球軸受の球面座型座金にC
/Cコンポジット材を使用した場合を図示している。軸
受本体11は球面座型座金(受け部材)12に設置され
ている。この座金12の球面座12aは半径Rの球面に
なっており、この球面に沿って軸受本体11が摺動す
る。そこで、座金12を構成する2D織物7を、半径R
の球面に沿って配設し、半径Rの方向に積層する。する
と、軸受本体11の座金12に対する摺動方向は、2D
織物の二次元の曲面と略平行な曲面になり、図1の受け
部材2と同様に摩擦係数が最も低くなって好ましい。FIG. 3 shows a spherical washer of a thrust ball bearing with C
The case where a / C composite material is used is shown. The bearing body 11 is installed on a spherical washer (receiving member) 12. The spherical seat 12a of the washer 12 is a spherical surface having a radius R, along which the bearing body 11 slides. Therefore, the 2D woven fabric 7 constituting the washer 12 is changed to a radius R
And is laminated in the direction of the radius R. Then, the sliding direction of the bearing body 11 with respect to the washer 12 is 2D.
The curved surface is substantially parallel to the two-dimensional curved surface of the woven fabric, and preferably has the lowest friction coefficient similarly to the receiving member 2 of FIG.
【0014】図4は図1や図3のような転がり軸受とは
異なる滑り軸受に対してC/Cコンポジット材を使用し
た場合を図示している。軸21に対して円筒形状の滑り
軸受22がはめ込まれ、軸21は滑り軸受22に対して
矢印の方向に滑る。この滑り軸受22はその全体がC
/Cコンポジット材で形成され、2D織物7を軸回りに
包帯のように巻き重ねたものである。摺動方向は2D
織物の二次元の曲面と略平行な曲面であり、摩擦係数が
最も低くなって好ましい。FIG. 4 shows a case where a C / C composite material is used for a sliding bearing different from the rolling bearings as shown in FIGS. A cylindrical slide bearing 22 is fitted to the shaft 21, and the shaft 21 slides in the direction of the arrow with respect to the slide bearing 22. This sliding bearing 22 is entirely C
/ C composite material, and the 2D fabric 7 is wound around the axis like a bandage. Sliding direction is 2D
It is a curved surface that is substantially parallel to the two-dimensional curved surface of the woven fabric, and has the lowest coefficient of friction and is preferable.
【0015】図5は、本発明の軸受用摺動部材が組み込
まれたころ軸受の部分破断図である。図5において、2
3は軸受本体であり、内輪24と外輪25との間に図の
ような転動体26を有し、これを保持する保持器27が
配設されている。FIG. 5 is a partially cutaway view of a roller bearing in which the bearing sliding member of the present invention is incorporated. In FIG. 5, 2
Reference numeral 3 denotes a bearing body, which has a rolling element 26 between the inner ring 24 and the outer ring 25 as shown in the figure, and a retainer 27 for holding the rolling element 26 is provided.
【0016】図6に保持器27の構造を示す。転動体2
6は、内輪24と外輪25との間の相対的回転によっ
て、保持器27に対して矢印の方向に滑る。この保持
器27は二次元に配設された炭素繊維クロス(2D織
物)28の平面を軸垂直な方向に並べ、軸方向に積層し
たものである。転動体26が摺動する矢印方向は、二
次元の二方向のうちいずれかと略平行であり、図7
(c)のB1,B2,B3またはB4より転動体26と
の接触が生じ、摩擦係数が低くなる。また、この矢印
の回転軸方向、即ち円柱状の転動体の端面で保持輪と接
触を生じる場合には、図7(a)のA1,A2により接
触を生じ、更に摩擦係数が低い。FIG. 6 shows the structure of the retainer 27. Rolling element 2
6 slides relative to the retainer 27 in the direction of the arrow due to the relative rotation between the inner race 24 and the outer race 25. The retainer 27 is formed by arranging two-dimensionally arranged carbon fiber cloth (2D woven fabric) planes in a direction perpendicular to the axis and laminating them in the axial direction. The direction of the arrow on which the rolling element 26 slides is substantially parallel to one of the two directions in two dimensions.
Contact with the rolling element 26 occurs from B1, B2, B3 or B4 of (c), and the friction coefficient decreases. Further, when contact occurs with the retaining ring in the direction of the rotation axis of the arrow, that is, in the end face of the cylindrical rolling element, contact occurs due to A1 and A2 in FIG. 7A, and the friction coefficient is further reduced.
【0017】[0017]
【実施例】つぎに、具体的な実験例を表を用いつつ以下
に説明する。EXAMPLES Next, specific experimental examples will be described below using tables.
【0018】実験例1 使用繊維に、石炭ピッチ系炭素繊維(三菱化学(株)製
ダイヤリードK3214K)を平織りして、特別の熱処
理を施さない炭素繊維クロスを形成した。この炭素繊維
クロスにフェノール樹脂(住友デュレズ製PR−502
73)を含浸させ、硬化後の樹脂量が35mass%に
なるように調整した。この樹脂含浸クロスを70°Cオ
ーブン中で2時間乾燥させシート状のプリプレグを得
た。このプリプレグを40層積層し、160°Cで熱圧
成形し、20tのCFRP(Carbon Fiber
Rainforced Plastics)成形体を
得た。窒素ガス雰囲気で、20°C/h、1000°C
の焼成を施し、更にピッチ含浸・焼成を繰り返し、高密
度化を行い、かさ密度d=1.7のC/Cコンポジット
材を得た。このC/Cコンポジット材から12.5mm
×20mmの断面のテストピースを切り出し、図7の
(a)(b)(c)(d)の如く炭素繊維クロス7の面
を基準にして3方向(A1,A1′,B1,C1)の摩
擦試験を行った。この摩擦試験は、φ100mmのSU
Sリングに荷重1kg/fで押しつけ、周速8.24m
/sで24時間摺動させ、そのときの摩擦係数と磨耗量
を測定することにより行った。Experimental Example 1 Coal pitch-based carbon fiber (Dialead K3214K manufactured by Mitsubishi Chemical Corporation) was plain-woven into the used fiber to form a carbon fiber cloth that was not subjected to a special heat treatment. Phenolic resin (PR-502 manufactured by Sumitomo Durez) is applied to this carbon fiber cloth.
73) was impregnated, and the amount of the cured resin was adjusted to 35 mass%. This resin-impregnated cloth was dried in a 70 ° C. oven for 2 hours to obtain a sheet-shaped prepreg. Forty layers of this prepreg are laminated and hot-pressed at 160 ° C., and CFRP (Carbon Fiber of 20 t) is formed.
(Rainforced Plastics) molded product was obtained. 20 ° C / h, 1000 ° C in nitrogen gas atmosphere
, And pitch impregnation and firing were repeated to increase the density, thereby obtaining a C / C composite material having a bulk density d = 1.7. 12.5mm from this C / C composite material
A test piece having a cross section of × 20 mm was cut out, and three directions (A1, A1 ', B1, C1) were determined with reference to the surface of the carbon fiber cloth 7 as shown in FIGS. 7 (a), (b), (c), and (d). A friction test was performed. In this friction test, SU100 mm
Pressing against the S-ring with a load of 1kg / f, peripheral speed 8.24m
/ S was slid for 24 hours, and the friction coefficient and the amount of wear at that time were measured.
【0019】実験例2 使用繊維として、PAN系炭素繊維を平織りしたもの
(東レ(株)製トレカT−300 3K平織り CO#
6343クロス)を一旦2000°Cで熱処理し、結晶
化を進めて炭素繊維の弾性率を高めた。なお、炭素繊維
の結晶化度は学振法による面間隔d(002)は3.4
3であった。この炭素繊維クロス7を実験例1と同様の
要領でC/Cコンポジット材にして、実験例1と同様の
摩擦試験を行った。なお、C/Cコンポジット材のかさ
密度d=1.65であった。EXPERIMENTAL EXAMPLE 2 A PAN-based carbon fiber plain-woven as a fiber to be used (Torae T-300 3K plain weave CO # manufactured by Toray Industries, Inc.)
6343 cloth) was once heat-treated at 2000 ° C. to promote crystallization to increase the elastic modulus of the carbon fiber. The crystallinity of the carbon fiber was determined by the plane spacing d (002) by the Gakushin method of 3.4.
It was 3. Using this carbon fiber cloth 7 as a C / C composite material in the same manner as in Experimental Example 1, the same friction test as in Experimental Example 1 was performed. In addition, the bulk density d of the C / C composite material was 1.65.
【0020】実験例3 使用繊維は実験例2と同じで、2000°Cの熱処理を
しないものを用い、実験例2と同様の製造方法でC/C
コンポジット材を得た。なお、かさ密度d=1.6であ
った。EXPERIMENTAL EXAMPLE 3 The fibers used were the same as those in Experimental Example 2 except that they were not subjected to a heat treatment at 2000 ° C.
A composite material was obtained. The bulk density d was 1.6.
【0021】実験例1、実験例2及び実験例3の場合の
摩擦係数と磨耗量を摺動方向A1,B1,C1の各々に
ついて測定した結果を表1に示す。Table 1 shows the results of measurement of the coefficient of friction and the amount of wear in each of the sliding directions A1, B1, and C1 in Experimental Examples 1, 2, and 3.
【0022】[0022]
【表1】 [Table 1]
【0023】表1において、実験例1、実験例2及び実
験例3のいずれも、摩擦係数と磨耗量の両方ともが炭素
繊維クロス7を基準にした摺動方向A1<B1<C1の
順に低くなっており、摺動方向A1やB1は使えるもの
の、摺動方向C1は使いにくいものであることが判る。In Table 1, in each of Experimental Example 1, Experimental Example 2 and Experimental Example 3, both the coefficient of friction and the amount of wear were lower in the sliding direction A1 <B1 <C1 based on the carbon fiber cloth 7. It can be seen that although the sliding directions A1 and B1 can be used, the sliding direction C1 is difficult to use.
【0024】また、石炭ピッチ系炭素繊維を用いた実験
例1は他と比較して摩擦係数及び磨耗量が最も低く、2
000°Cの熱処理をしたPAN系炭素繊維を用いた実
験例2は摩擦係数及び磨耗量が次に低くなっている。熱
処理を行わないPAN系炭素繊維を用いた実験例3を熱
処理を行った実験例2と対比すると、摩擦係数は遜色な
いものの磨耗量で差があり、PAN系炭素繊維の場合に
は2000°C以上の熱処理を施し結晶化度を高めるこ
とが望ましいことが判る。In Experimental Example 1 using coal pitch-based carbon fiber, the coefficient of friction and the amount of abrasion were the lowest as compared with the others.
In Experimental Example 2 using the PAN-based carbon fiber heat-treated at 000 ° C., the coefficient of friction and the amount of wear were the second lowest. When the experimental example 3 using the PAN-based carbon fiber without heat treatment is compared with the experimental example 2 using the heat treatment, the friction coefficient is not inferior but there is a difference in the amount of abrasion. It is understood that it is desirable to increase the crystallinity by performing the above heat treatment.
【0025】[0025]
【発明の効果】以上に説明したように、本発明のうち請
求項1記載の発明は、摺動部材を炭素繊維強化炭素複合
材料によって形成し、前記炭素繊維強化炭素複合材料に
おける炭素繊維は二次元に配設されたものを積層したも
のであり、前記二次元の面と略平行な面又は前記二次元
の二方向のうちのいずれかと略平行な方向に前記摺動部
材の摺動面が配設されていることを特徴とする。このよ
うに、摺動面に対して炭素繊維の二次元クロスの配設方
向を適切にすることによって、炭素繊維強化炭素複合材
料の優れた特性を生かしながら、摩擦係数のみならず摩
擦係数を少なくすることができるため、軸受の摺動部材
としての使用を可能にするという効果を奏する。As described above, according to the first aspect of the present invention, the sliding member is formed of a carbon fiber reinforced carbon composite material, and the carbon fibers in the carbon fiber reinforced carbon composite material are two or more. The two-dimensionally arranged ones are stacked, and the sliding surface of the sliding member is in a direction substantially parallel to one of the two-dimensional surface or the surface substantially parallel to the two-dimensional surface. It is characterized by being provided. In this way, by appropriately arranging the two-dimensional cloth of carbon fibers with respect to the sliding surface, not only the friction coefficient but also the friction coefficient can be reduced while taking advantage of the excellent characteristics of the carbon fiber reinforced carbon composite material. Therefore, there is an effect that the bearing can be used as a sliding member.
【0026】請求項2記載の発明は、前記炭素繊維を異
方性ピッチ系炭素繊維としたものである。したがって、
ピッチ系炭素繊維の高結晶化度によって摩擦係数が小さ
く、磨耗量も少なくすることができるという効果を奏す
る。According to a second aspect of the present invention, the carbon fibers are anisotropic pitch-based carbon fibers. Therefore,
Due to the high degree of crystallinity of the pitch-based carbon fiber, the friction coefficient is small and the amount of wear can be reduced.
【0027】請求項3記載の発明は、前記炭素繊維はP
AN系炭素繊維であり、その結晶化度が学振法によるX
線回析の面間隔d(002)が3.45以下である。し
たがって、PAN系炭素繊維の結晶化率を高めて、摩擦
係数が小さく、磨耗量も少なくすることができるという
効果を奏する。According to a third aspect of the present invention, the carbon fiber is P
AN-based carbon fiber whose crystallinity is X
The plane spacing d (002) of the line diffraction is 3.45 or less. Therefore, there is an effect that the crystallization rate of the PAN-based carbon fiber can be increased, the coefficient of friction can be reduced, and the amount of wear can be reduced.
【図1】本発明の軸受用摺動部材が組み込まれた玉軸受
の斜視図である。FIG. 1 is a perspective view of a ball bearing in which a bearing sliding member of the present invention is incorporated.
【図2】図1の軸受における保持器の構造図である。FIG. 2 is a structural view of a cage in the bearing of FIG.
【図3】本発明の軸受用摺動部材が組み込まれた他の軸
受の斜視図である。FIG. 3 is a perspective view of another bearing in which the sliding member for bearing of the present invention is incorporated.
【図4】本発明の軸受用摺動部材が組み込まれた更に他
の軸受の斜視図である。FIG. 4 is a perspective view of still another bearing in which the bearing sliding member of the present invention is incorporated.
【図5】本発明の軸受用摺動部材が組み込まれたころ軸
受の斜視図である。FIG. 5 is a perspective view of a roller bearing in which the bearing sliding member of the present invention is incorporated.
【図6】図5の軸受における保持器の構造図である。FIG. 6 is a structural view of a cage in the bearing of FIG. 5;
【図7】軸受用摺動部材の滑り方向特性を示す斜視図で
ある。FIG. 7 is a perspective view showing a sliding direction characteristic of the bearing sliding member.
1 軸受本体 2 受け部材(C/Cコンポジット材) 3 外輪 4 内輪 5 保持器(C/Cコンポジット材) 6 転動体 7 炭素繊維クロス 11 軸受本体 12 座金 12a 球面座 21 軸 22 軸受 23 軸受本体 24 内輪 25 外輪 26 転動体 27 保持器 28 炭素繊維クロス(2D織物) A1,A2,A1′,A2′ 炭素繊維の二次元の面と
略平行な面の方向 B1,B2,B3,B4,C1,C2,C3,C4 炭
素繊維のクロスの厚さ方向と略平行な方向DESCRIPTION OF SYMBOLS 1 Bearing main body 2 Receiving member (C / C composite material) 3 Outer ring 4 Inner ring 5 Cage (C / C composite material) 6 Rolling element 7 Carbon fiber cloth 11 Bearing main body 12 Washer 12a Spherical seat 21 Shaft 22 Bearing 23 Bearing main body 24 Inner ring 25 Outer ring 26 Rolling element 27 Cage 28 Carbon fiber cloth (2D fabric) A1, A2, A1 ', A2' Direction of plane B1, B2, B3, B4, C1, substantially parallel to two-dimensional plane of carbon fiber C2, C3, C4 Direction substantially parallel to the thickness direction of the carbon fiber cloth
Claims (3)
摺動部材であって軸受及びその受け部材を構成する軸受
用摺動部材において、 前記摺動部材を炭素繊維強化炭素複合材料によって形成
し、 前記炭素繊維強化炭素複合材料における炭素繊維は二次
元に配設されたものを積層したものであり、前記二次元
の面と略平行な面又は前記二次元の二方向のうちのいず
れかと略平行な方向に前記摺動部材の摺動面が配設され
ていることを特徴とする軸受用摺動部材。1. A sliding member for bearings and a bearing member thereof, which is a sliding member that relatively slides under a load, wherein said sliding member is made of carbon fiber reinforced carbon composite material. The carbon fiber in the carbon fiber reinforced carbon composite material is formed by laminating two-dimensionally arranged ones, and any one of a plane substantially parallel to the two-dimensional plane and the two-dimensional two directions A sliding member for a bearing, wherein a sliding surface of the sliding member is disposed in a direction substantially parallel to the heel.
繊維は異方性ピッチ系炭素繊維である軸受用摺動部材。2. The sliding member for a bearing according to claim 1, wherein the carbon fibers are anisotropic pitch-based carbon fibers.
繊維はPAN系炭素繊維であり、その結晶化度が学振法
によるX線回析の面間隔d(002)が3.45以下で
ある軸受用摺動部材。3. The carbon fiber according to claim 1, wherein the carbon fiber is a PAN-based carbon fiber having a crystallinity of 3.45 or less in a plane distance d (002) of X-ray diffraction by Gakushin method. A sliding member for a bearing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8203291A JPH1026142A (en) | 1996-07-11 | 1996-07-11 | Slide member for bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8203291A JPH1026142A (en) | 1996-07-11 | 1996-07-11 | Slide member for bearing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH1026142A true JPH1026142A (en) | 1998-01-27 |
Family
ID=16471616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8203291A Pending JPH1026142A (en) | 1996-07-11 | 1996-07-11 | Slide member for bearing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH1026142A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001104675A (en) * | 1998-09-25 | 2001-04-17 | Juki Corp | Needle bar, sliding device for sewing machine, and sewing machine |
JP2008281197A (en) * | 2007-05-11 | 2008-11-20 | General Electric Co <Ge> | X-ray tube bearing cage |
US10393177B2 (en) * | 2015-07-21 | 2019-08-27 | Deutsches Zentrum Fuer Luft-Und Raumfahrt E.V. | Sliding bearing device |
CN111606728A (en) * | 2020-05-26 | 2020-09-01 | 西安超码科技有限公司 | Carbon/carbon composite material rolling bearing |
WO2024121901A1 (en) * | 2022-12-05 | 2024-06-13 | 東洋炭素株式会社 | C/C COMPOSITE, AND MEMBER FOR Si SINGLE CRYSTAL PULLING-UP FURNACE |
-
1996
- 1996-07-11 JP JP8203291A patent/JPH1026142A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001104675A (en) * | 1998-09-25 | 2001-04-17 | Juki Corp | Needle bar, sliding device for sewing machine, and sewing machine |
JP2008281197A (en) * | 2007-05-11 | 2008-11-20 | General Electric Co <Ge> | X-ray tube bearing cage |
US10393177B2 (en) * | 2015-07-21 | 2019-08-27 | Deutsches Zentrum Fuer Luft-Und Raumfahrt E.V. | Sliding bearing device |
CN111606728A (en) * | 2020-05-26 | 2020-09-01 | 西安超码科技有限公司 | Carbon/carbon composite material rolling bearing |
WO2024121901A1 (en) * | 2022-12-05 | 2024-06-13 | 東洋炭素株式会社 | C/C COMPOSITE, AND MEMBER FOR Si SINGLE CRYSTAL PULLING-UP FURNACE |
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