JPH08109959A - Cam follower device - Google Patents

Cam follower device

Info

Publication number
JPH08109959A
JPH08109959A JP24624594A JP24624594A JPH08109959A JP H08109959 A JPH08109959 A JP H08109959A JP 24624594 A JP24624594 A JP 24624594A JP 24624594 A JP24624594 A JP 24624594A JP H08109959 A JPH08109959 A JP H08109959A
Authority
JP
Japan
Prior art keywords
roller
peripheral surface
outer peripheral
chamfers
cam follower
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.)
Granted
Application number
JP24624594A
Other languages
Japanese (ja)
Other versions
JP3529451B2 (en
Inventor
Kazuhisa Kitamura
和久 北村
Hiroaki Takebayashi
博明 竹林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP24624594A priority Critical patent/JP3529451B2/en
Publication of JPH08109959A publication Critical patent/JPH08109959A/en
Application granted granted Critical
Publication of JP3529451B2 publication Critical patent/JP3529451B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Landscapes

  • Valve-Gear Or Valve Arrangements (AREA)
  • Gears, Cams (AREA)

Abstract

PURPOSE: To suppress the abrasion of the local part of a supporting shaft accompanied with the one-sided contact for the supporting shaft of a roller made of ceramics. CONSTITUTION: A ceramic roll 10 is externally fitted through a necessary gap so as to be rotatable, for a supporting shaft 9 installed in a bridge form between a pair supporting walls 8 and 8 which are opposed in parallel. Chamferings 11, 11 and 13, 13 are formed at both the ends in the axial direction on the outer peripheral surface of the roller 10 and at both the ends in the axial direction of the inner peripheral surface. The full crowning work is applied on the effective rolling surface region 12 except the chamferings 11 and 11 on both the sides of the outer peripheral surface. The width w2 in the axial direction in the region where the chamferings 13 and 13 on the inner peripheral surface are formed in set smaller than the width w1 in the axial direction in the region where the chamferings 11 and 11 of the outer peripheral surface are formed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、例えばエンジンの動弁
機構であるロッカーアームやバルブリフターなどに用い
られるカムフォロワ装置に係り、特にセラミックス製ロ
ーラを用いたものの改良に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cam follower device used in, for example, a rocker arm or a valve lifter, which is a valve mechanism of an engine, and more particularly to an improvement of a device using a ceramic roller.

【0002】[0002]

【従来の技術】従来のカムフォロワ装置の説明に先立
ち、その使用対象となるロッカーアームやバルブリフタ
ーを図3および図4に示す。
Prior to the description of a conventional cam follower device, rocker arms and valve lifters to be used are shown in FIGS. 3 and 4.

【0003】図3は、OHV型式エンジンの動弁機構の
概略構成図、図4は、OHC型式エンジンの動弁機構の
概略構成図である。
FIG. 3 is a schematic configuration diagram of a valve operating mechanism of an OHV type engine, and FIG. 4 is a schematic configuration diagram of a valve operating mechanism of an OHC type engine.

【0004】図3の例では、カム軸1のカム1aにより
プッシュロッド2を上下動させることによりその上端と
連動するロッカアーム4を揺動させて、このロッカアー
ム4の揺動でバルブ5を開閉動作させるようになってお
り、ロッカアーム4の下端のラッシュアジャスタ6の下
部にカムフォロワ装置7が設けられている。
In the example of FIG. 3, the push rod 2 is moved up and down by the cam 1a of the cam shaft 1 to swing the rocker arm 4 interlocking with the upper end of the push rod 2, and the rocker arm 4 swings to open and close the valve 5. The cam follower device 7 is provided below the lash adjuster 6 at the lower end of the rocker arm 4.

【0005】図4の例では、カム軸1のカム1aにより
直接的にロッカアーム4を揺動させて、このロッカアー
ム4の揺動でバルブ5を開閉動作させるようになってお
り、このロッカアーム4にカムフォロワ装置7が設けら
れている。
In the example of FIG. 4, the rocker arm 4 is swung directly by the cam 1a of the cam shaft 1, and the rocker arm 4 swings to open / close the valve 5. A cam follower device 7 is provided.

【0006】これらのカムフォロワ装置7は、図2に示
すように、互いに平行に対向する二つ一対の支持壁8、
8を備え、これらの支持壁8、8の間に架橋状に取り付
けられる支軸9に対してローラ10が回転可能なように
所要隙間を介して外嵌されている。なお、支軸9および
ローラ10は、鋼材により形成されている。
As shown in FIG. 2, these cam follower devices 7 have a pair of support walls 8 facing each other in parallel.
8 is provided, and the roller 10 is externally fitted via a required gap so as to be rotatable with respect to a support shaft 9 mounted in a bridge shape between these support walls 8. The support shaft 9 and the roller 10 are made of steel.

【0007】ローラ10は、その外周面の軸方向両端に
面取り11,11が設けられており、両側の面取り1
1,11を除く有効転走面領域12には、フルクラウニ
ング加工が施されている。このフルクラウニングの形状
は、曲面であり、図面には誇張して表してある。また、
ローラ10の中心に設けられる貫通孔の内周面の軸方向
両端にも面取り13,13が設けられており、この面取
り13,13が形成される領域の軸方向幅w4は、一般
的に、外周面の面取り11,11が形成される領域の軸
方向幅w3と同一に設定される。
The roller 10 is provided with chamfers 11 and 11 on both ends in the axial direction of the outer peripheral surface thereof, and chamfers 1 on both sides are provided.
The effective rolling contact surface region 12 except 1 and 11 is subjected to full crowning. The shape of this full crowning is a curved surface and is exaggerated in the drawing. Also,
The chamfers 13, 13 are also provided on both axial ends of the inner peripheral surface of the through hole provided at the center of the roller 10, and the axial width w4 of the region where the chamfers 13, 13 are formed is generally It is set to be the same as the axial width w3 of the region where the chamfers 11, 11 on the outer peripheral surface are formed.

【0008】[0008]

【発明が解決しようとする課題】ところで、鋼製のロー
ラ10の場合には、カム1aとの相対的な姿勢の傾きつ
まりミスアライメントがあっても、ローラ10の外周面
にフルクラウニング加工を施しているために、このフル
クラウニングで前記ミスアライメントを吸収することが
できる。この場合、結果的にローラ10が支軸9に対し
て片当たりするものの、この片当たりとなるローラ10
の内周面端部は経時的に摩耗してなじむために、支軸9
の局部に対する応力集中が緩和され、支軸9が局部的に
摩耗しにくくなる。
By the way, in the case of the steel roller 10, the outer peripheral surface of the roller 10 is subjected to full crowning even if there is inclination or misalignment of the posture relative to the cam 1a. Therefore, the misalignment can be absorbed by the full crowning. In this case, as a result, the roller 10 comes into one-side contact with the support shaft 9, but the roller 10 comes into this one-side contact.
Since the end of the inner peripheral surface of the shaft wears and adapts over time, the support shaft 9
The stress concentration on the local area is relaxed, and the spindle 9 is less likely to be locally worn.

【0009】ここで、上述したような構成のローラ10
をその摩耗防止、軽量化を目的としてセラミックス材で
形成した場合、前述の片当たり現象が発生すると、この
片当たりとなるローラ10の内周面端部はほとんど摩耗
しないために、支軸9の局部に対する応力集中が緩和さ
れず、結果、早期段階で支軸9が局部的に摩耗すること
になってしまう。
Here, the roller 10 having the above-described structure.
When the above-mentioned one-side contact phenomenon occurs, when the above-mentioned one-side contact phenomenon occurs, the inner peripheral surface end portion of the roller 10 which causes the one-side contact is hardly worn, and therefore the support shaft 9 of The stress concentration on the local portion is not relaxed, and as a result, the spindle 9 is locally worn at an early stage.

【0010】したがって、本発明は、セラミックス製ロ
ーラの支軸に対する片当たり現象に伴う支軸の局部摩耗
を抑制することを目的としている。
Therefore, an object of the present invention is to suppress local wear of a support shaft of a ceramic roller due to a one-sided contact phenomenon with the support shaft.

【0011】[0011]

【課題を解決するための手段】本発明は、カムに当接さ
せられるセラミックス製のローラが二つ一対の支持壁間
に架設された支軸に回転可能に支持されてなるカムフォ
ロワ装置において、次のような構成をとる。
SUMMARY OF THE INVENTION The present invention provides a cam follower device in which a roller made of ceramics, which is brought into contact with a cam, is rotatably supported by a support shaft provided between a pair of support walls. Take the configuration like.

【0012】本発明では、セラミックス製ローラの外周
面の軸方向両端に面取りが設けられているとともに、こ
の両側の面取りを除く軸方向中間の有効転走面領域に曲
面状のフルクラウニング加工が施されており、ローラの
中心に設けられる貫通孔の内周面の軸方向両端に前記外
周面側の面取り幅よりも小さい幅の面取りが設けられて
いる。
In the present invention, the outer peripheral surface of the ceramic roller is provided with chamfers at both ends in the axial direction, and the effective rolling contact surface region in the axial direction excluding the chamfers on both sides is subjected to curved full crowning. A chamfer having a width smaller than the chamfer width on the outer peripheral surface side is provided at both axial ends of the inner peripheral surface of the through hole provided at the center of the roller.

【0013】[0013]

【作用】本発明は、要するに、セラミックス製ローラの
支軸に対する片当たり現象での不具合を考慮して、ロー
ラ内周面の軸方向両端に形成する面取りの軸方向幅を可
及的に小さくするようにしている。
According to the present invention, in short, the axial width of the chamfer formed at both axial ends of the inner peripheral surface of the roller is made as small as possible in consideration of the problem of the one-sided contact phenomenon with respect to the support shaft of the ceramic roller. I am trying.

【0014】したがって、本発明では、セラミックス製
ローラの片当たり現象が発生したときでも、ローラの傾
き自体が小さく抑えられて、ローラの支軸に対する接触
面積が従来に比べて大きくとれるようになるから、前記
局部に集中する接触応力が分散されるようになる。これ
により、片当たり現象に伴う支軸の摩耗が抑制されるこ
とになる。
Therefore, in the present invention, even when the one-sided contact phenomenon of the ceramic roller occurs, the inclination itself of the roller is suppressed to be small, and the contact area of the roller with respect to the support shaft can be made larger than in the conventional case. The contact stress concentrated on the local area is dispersed. As a result, wear of the support shaft due to the one-sided contact phenomenon is suppressed.

【0015】[0015]

【実施例】以下、本発明の詳細を図1に示す実施例に基
づいて説明する。この実施例でも従来例と同様、カムフ
ォロワ装置を図3および図4に示すエンジンの動弁機構
に適用した例を挙げているので、この動弁機構の説明は
割愛する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below based on the embodiment shown in FIG. In this embodiment as well as in the conventional example, an example in which the cam follower device is applied to the valve operating mechanism of the engine shown in FIGS. 3 and 4 is given, and therefore the description of the valve operating mechanism is omitted.

【0016】図1は、カムフォロワ装置の縦断面図であ
る。図例のカムフォロワ装置7は、互いに平行に対向す
る二つ一対の支持壁8、8を備え、これらの支持壁8、
8の間に架橋状に取り付けられる支軸9に対してローラ
10が回転可能なように所要隙間を介して外嵌されてい
る。この隙間は、作動時の環境温度により、鋼材製の支
軸9がセラミックス製のローラ10に対し相対的に熱膨
張したとしても維持されるように設定するのが好まし
い。
FIG. 1 is a vertical sectional view of a cam follower device. The cam follower device 7 of the illustrated example includes two pairs of support walls 8 facing each other in parallel to each other.
A roller 10 is externally fitted to a support shaft 9 mounted in a bridge shape between the rollers 8 so as to be rotatable with a required clearance. It is preferable to set this gap so that it is maintained even if the support shaft 9 made of steel material thermally expands relative to the roller 10 made of ceramics due to the environmental temperature during operation.

【0017】支軸9は、例えばJIS規格SUJ−2あ
るいはJIS規格SCr420やSAE規格5120な
どの鋼材、あるいはセラミックス材(窒化けい素を主体
とした焼結体)で形成される。支軸9を鋼材とする場
合、ローラ10とのすべり面に浸炭焼入れや高周波焼入
れなどの硬化処理が施される。
The support shaft 9 is formed of a steel material such as JIS standard SUJ-2, JIS standard SCr420 or SAE standard 5120, or a ceramic material (sintered body mainly composed of silicon nitride). When the support shaft 9 is made of steel, the sliding surface with the roller 10 is subjected to hardening treatment such as carburizing and induction hardening.

【0018】ローラ10は、後述するセラミックス材に
より形成されている。このローラ10は、その外周面の
軸方向両端に直線状の面取り11,11が設けられてお
り、この両側の面取り11,11を除く有効転走面領域
12には、フルクラウニング加工が施されている。この
フルクラウニングの形状は、対数曲線に基づく曲面(曲
率半径の大きな平坦に近い曲面)が理想的であり、例え
ば、形状に応じて概ね曲率半径は、1000〜7000
mmに形成される。図面には誇張して表してある。ま
た、ローラ10の中心に設けられる貫通孔の内周面の軸
方向両端にも直線状の面取り13,13が設けられてお
り、その面取り13,13が形成される領域の軸方向幅
w2は、外周面の面取り11,11が形成される領域の
軸方向幅w1よりも小さく設定されている。したがっ
て、ローラ10の内周面の支軸9に対する接触面積が、
従来に比べて大きくとれるようになって、接触面圧が軽
減される。そして、フルクラウニングを施した領域12
とその両側の面取り11,11とは、滑らかに連続する
ように設定されている。
The roller 10 is made of a ceramic material described later. This roller 10 is provided with linear chamfers 11 and 11 on both axial ends of its outer peripheral surface, and the effective rolling surface area 12 excluding the chamfers 11 and 11 on both sides is subjected to full crowning. ing. The shape of this full crowning is ideally a curved surface based on a logarithmic curve (a curved surface with a large radius of curvature and close to a flat surface). For example, the radius of curvature is approximately 1000 to 7,000 depending on the shape.
formed to mm. The drawing is exaggerated. Further, linear chamfers 13, 13 are also provided on both axial ends of the inner peripheral surface of the through hole provided at the center of the roller 10, and the axial width w2 of the region where the chamfers 13, 13 are formed is , The axial width w1 of the region where the chamfers 11 on the outer peripheral surface are formed is set smaller than the axial width w1. Therefore, the contact area of the inner peripheral surface of the roller 10 with the support shaft 9 is
The contact surface pressure can be reduced as compared with the conventional case. And the area 12 with full crowning
And the chamfers 11, 11 on both sides thereof are set to smoothly continue.

【0019】なお、図の例では、内周面の面取り13の
面取り角度θ2を、外周面の面取り11の面取り角度θ
1よりもゆるやかに設定しているが、この角度について
は同じに設定してもよい。
In the illustrated example, the chamfer angle θ2 of the chamfer 13 on the inner peripheral surface is the chamfer angle θ of the chamfer 11 on the outer peripheral surface.
Although it is set more gently than 1, this angle may be set to be the same.

【0020】上述したローラ10は、いわゆる低品位セ
ラミックスや高品位セラミックスのいずれでもよい。こ
の低品位セラミックスや高品位セラミックスの表現は、
製造方法に応じて使い分けられる。
The roller 10 described above may be so-called low-grade ceramics or high-grade ceramics. The expression of low-grade ceramics and high-grade ceramics is
It is used properly according to the manufacturing method.

【0021】 低品位セラミックスは、平均粒径0.
5〜1μmのα型の窒化けい素の粉末(低グレード品例
えば電気化学工業株式会社の品種番号SN−9FW)に
対してイットリア(Y23),アルミナ(Al23),
窒化アルミ(AlN),チタニア(TiO2)などの焼
結助剤を5〜20重量%添加する。これにバインダーを
混入して金型に充填した状態で単軸圧縮することにより
成形する。この成形品を最終形状に近い状態に加工する
とともに、バインダーなどの有機物を除去してから、1
〜10気圧の圧力下で焼結する。焼結温度や焼結時間
は、1800℃、2〜4時間である。この焼結体の転動
面や摺動面に対して超仕上げ加工を施し、最終製品の寸
法、表面状態とする。
Low-grade ceramics have an average particle size of 0.
5 to 1 μm α-type silicon nitride powder (low grade product such as Denki Kagaku Kogyo Co., Ltd. product number SN-9FW) is used for yttria (Y 2 O 3 ), alumina (Al 2 O 3 ),
A sintering aid such as aluminum nitride (AlN) or titania (TiO 2 ) is added in an amount of 5 to 20% by weight. It is molded by uniaxial compression in a state where a binder is mixed into this and the mold is filled. After processing this molded product to a state close to the final shape and removing organic substances such as binder,
Sinter under a pressure of -10 atmospheres. The sintering temperature and the sintering time are 1800 ° C. and 2 to 4 hours. The rolling surface and sliding surface of this sintered body are superfinished to obtain the final product dimensions and surface condition.

【0022】 高品位セラミックスは、平均粒径0.
2μmのα型の窒化けい素の粉末(高グレード品例えば
株式会社宇部興産の品種番号E−10)に対してイット
リア(Y23),アルミナ(Al23),窒化アルミ
(AlN),チタニア(TiO2)などの焼結助剤を1
0重量%以下添加する。これにバインダーを混入して金
型に充填した状態で単軸圧縮することにより成形する。
この成形品を最終形状に近い状態に加工するとともに、
バインダーなどの有機物を除去してから、いわゆるHP
(ホット・プレス)、HIP(ホット・アイソスタティ
ック・プレス)と称する手法により焼結する。焼結時
に、HPでは、機械的に400Kgf/cm 2、HIP
では、ガス圧により1000気圧もの高い圧力をかけ
る。この焼結体の転動面や摺動面に対して超仕上げ加工
を施し、表面粗さを1μRZ以下にしている。
High-grade ceramics have an average particle size of 0.
2μm α-type silicon nitride powder (high grade products such as
It's against Ube Industries' product number E-10)
Rear (Y2O3), Alumina (Al2O3), Aluminum nitride
(AlN), titania (TiO2) And other sintering aids
Add 0 wt% or less. Add a binder to this and
Molded by uniaxial compression in a state of being filled in a mold.
While processing this molded product to a state close to the final shape,
After removing organic materials such as binders, so-called HP
(Hot Press), HIP (Hot Isostaty)
Sintering is carried out by a method called "Cock Press". During sintering
In HP, mechanically 400 Kgf / cm 2, HIP
Then, apply a pressure as high as 1000 atm by the gas pressure.
You. Super finishing of rolling surface and sliding surface of this sintered body
The surface roughness of 1 μRZBelow.

【0023】低品位セラミックスは、高品位セラミック
スに比べると価格を低く抑えることができるが、気孔率
が高くなり、機械的強度が若干低くなる。但し、カムフ
ォロワ装置7での使用については支障ない。
The low-grade ceramics can be kept at a lower price than the high-grade ceramics, but the porosity is high and the mechanical strength is slightly low. However, there is no problem in using the cam follower device 7.

【0024】また、低品位セラミックスの場合、焼結後
に焼結体の転動面や摺動面に超仕上げを施せば、焼結体
内部に点在する気孔(ポア)が該面に対して開口するこ
とになり、これが潤滑剤などの溜まりとなるなど良好な
潤滑性を発揮する。そのため、ローラ10とカム1aと
の摺接部位、ローラ10と支軸9との摺接部位ならびに
ローラ10の端面と支持壁8,8との摺接部位における
潤滑状態が良好となり、ローラ10の摺接相手側の摩耗
を軽減できるようになる。
Further, in the case of low-grade ceramics, if the rolling surface or sliding surface of the sintered body is superfinished after sintering, pores (pores) scattered inside the sintered body are formed on the surface. The openings are provided, and this serves as a reservoir for lubricants, etc., and exhibits good lubricity. Therefore, the sliding state between the roller 10 and the cam 1a, the sliding contact portion between the roller 10 and the support shaft 9 and the sliding contact portion between the end surface of the roller 10 and the support walls 8, 8 are good, and the lubrication state of the roller 10 is improved. It is possible to reduce the wear of the sliding contact partner.

【0025】なお、本発明は上記実施例のみに限定され
ない。例えば、面取り11,13は、上記実施例のよう
な直線形状とはせずに、丸みを持つR形状としたものも
本発明に含まれる。このようにR形状の面取りとする場
合、内周面の面取りと外周面の面取りとで曲率を同じに
したり、異ならせたりすることができる。
The present invention is not limited to the above embodiment. For example, the chamfers 11 and 13 are not limited to the linear shape as in the above embodiment, but are rounded to have an R shape. When the R-shaped chamfer is used as described above, the chamfer of the inner peripheral surface and the chamfer of the outer peripheral surface can have the same curvature or different curvatures.

【0026】[0026]

【発明の効果】以上のように、本発明では、セラミック
ス製ローラの内周面の軸方向両端での面取りを外周面の
面取りとの関係で工夫することにより、支軸へのローラ
の片当たり現象の発生時において支軸の局部への応力集
中を緩和できるようにしているから、支軸の早期段階で
の局部摩耗を回避できるようになる。
As described above, in the present invention, the chamfering at the axially opposite ends of the inner peripheral surface of the ceramic roller is devised in relation to the chamfering of the outer peripheral surface, so that the roller comes in contact with the support shaft on one side. Since the stress concentration on the local portion of the support shaft can be alleviated when the phenomenon occurs, local wear of the support shaft at an early stage can be avoided.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明のカムフォロワ装置の一実施例の縦断面
図。
FIG. 1 is a vertical sectional view of an embodiment of a cam follower device of the present invention.

【図2】従来のカムフォロワ装置の縦断面図。FIG. 2 is a vertical sectional view of a conventional cam follower device.

【図3】一般的なOHV型式エンジンの動弁機構の概略
構成図。
FIG. 3 is a schematic configuration diagram of a valve operating mechanism of a general OHV type engine.

【図4】一般的なOHC型式エンジンの動弁機構の概略
構成図。
FIG. 4 is a schematic configuration diagram of a valve mechanism of a general OHC type engine.

【符号の説明】[Explanation of symbols]

1a カム 7 カムフォロワ装置 8 支持壁 9 支軸 10 ローラ 11 ローラ外周面の面取り 12 ローラ外周面の有効転走面領域 13 ローラ内周面の面取り 1a Cam 7 Cam follower device 8 Support wall 9 Support shaft 10 Roller 11 Chamfer of roller outer peripheral surface 12 Effective rolling surface area of roller outer peripheral surface 13 Chamfer of roller inner peripheral surface

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 カムに当接させられるセラミックス製の
ローラが二つ一対の支持壁間に架設された支軸に回転可
能に支持されてなるカムフォロワ装置であって、 前記ローラの外周面の軸方向両端に面取りが設けられて
いるとともに、この両側の面取りを除く軸方向中間の有
効転走面領域に曲面状のフルクラウニング加工が施され
ており、 ローラの中心に設けられる貫通孔の内周面の軸方向両端
に前記外周面側の面取り幅よりも小さい幅の面取りが設
けられている、ことを特徴とするカムフォロワ装置。
1. A cam follower device in which a roller made of ceramics, which is brought into contact with a cam, is rotatably supported by a support shaft provided between two pairs of support walls, the shaft of the outer peripheral surface of the roller. Chamfers are provided at both ends in the direction, and the effective rolling surface area in the axial direction excluding the chamfers on both sides is subjected to curved full-crowning processing, and the inner circumference of the through hole provided at the center of the roller. A cam follower device, characterized in that chamfers having a width smaller than the chamfer width on the outer peripheral surface side are provided at both axial ends of the surface.
JP24624594A 1994-10-12 1994-10-12 Cam follower device Expired - Lifetime JP3529451B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24624594A JP3529451B2 (en) 1994-10-12 1994-10-12 Cam follower device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24624594A JP3529451B2 (en) 1994-10-12 1994-10-12 Cam follower device

Publications (2)

Publication Number Publication Date
JPH08109959A true JPH08109959A (en) 1996-04-30
JP3529451B2 JP3529451B2 (en) 2004-05-24

Family

ID=17145670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24624594A Expired - Lifetime JP3529451B2 (en) 1994-10-12 1994-10-12 Cam follower device

Country Status (1)

Country Link
JP (1) JP3529451B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6460498B2 (en) 2000-04-28 2002-10-08 Ntn Corporation Rocker arm
WO2022138579A1 (en) * 2020-12-24 2022-06-30 株式会社 東芝 Ceramic ball material, ceramic ball manufacturing method using same, and ceramic ball

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6460498B2 (en) 2000-04-28 2002-10-08 Ntn Corporation Rocker arm
WO2022138579A1 (en) * 2020-12-24 2022-06-30 株式会社 東芝 Ceramic ball material, ceramic ball manufacturing method using same, and ceramic ball
CN116669900A (en) * 2020-12-24 2023-08-29 株式会社东芝 Raw material for ceramic ball, method for producing ceramic ball using same, and ceramic ball

Also Published As

Publication number Publication date
JP3529451B2 (en) 2004-05-24

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