JPH0384418U - - Google Patents
Info
- Publication number
- JPH0384418U JPH0384418U JP14684089U JP14684089U JPH0384418U JP H0384418 U JPH0384418 U JP H0384418U JP 14684089 U JP14684089 U JP 14684089U JP 14684089 U JP14684089 U JP 14684089U JP H0384418 U JPH0384418 U JP H0384418U
- Authority
- JP
- Japan
- Prior art keywords
- needle roller
- rms
- surface roughness
- connecting rod
- piston pin
- 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
Links
- 230000003746 surface roughness Effects 0.000 claims 4
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案に係る針状ころ軸受の断面図
、第２図は試験軸受における針状ころの仕上げ面
状況を示す概略図、第３図は試験装置の概略図、
第４図乃至第８図の各々は針状ころ寿命試験の結
果を示すグラフ、第９図はＳＫ値と寿命の関係を
示すグラフ、第１０図はＲＭＳ（Ｌ／Ｃ）値と寿
命の関係を示すグラフ、第１１図は油膜パラメー
タと油膜形成率を示す関係図、第１２図と第１３
図は油膜形成率を示すグラフ、第１４図はコネク
テイングロツドの使用部分を示す断面図である。
１……クランクピン、２……ピストン、３……
ピストンピン、４……コネクテイングロツド、７
，８……針状ころ軸受、１１……針状ころ、１１
ａ……微小粗面、１２……保持器。
FIG. 1 is a cross-sectional view of the needle roller bearing according to this invention, FIG. 2 is a schematic diagram showing the finished surface of the needle roller in the test bearing, and FIG. 3 is a schematic diagram of the test equipment.
Each of Figures 4 to 8 is a graph showing the results of the needle roller life test, Figure 9 is a graph showing the relationship between SK value and life, and Figure 10 is the relationship between RMS (L/C) value and life. Figure 11 is a graph showing oil film parameters and oil film formation rate, Figures 12 and 13 are graphs showing oil film formation rate.
The figure is a graph showing the oil film formation rate, and FIG. 14 is a sectional view showing the used part of the connecting rod. 1... Crank pin, 2... Piston, 3...
Piston pin, 4...Connecting rod, 7
, 8... Needle roller bearing, 11... Needle roller, 11
a...Micro-rough surface, 12...Cage.
Claims (1)
及びクランクピンの間に各々針状ころ軸受を介装
し、少なくともコネクテイングロツドとピストン
ピンの間に介装した針状ころ軸受における針状こ
ろの表面に独立した微小な凹形状のくぼみを無数
にランダムに形成し、針状ころ表面の面粗さを、
軸方向と円周方向のそれぞれを求めてパラメータ
ＲＭＳで表示したとき、軸方向面粗さＲＭＳ（Ｌ
）と円周方向面粗さＲＭＳ(C)との比ＲＭＳ（Ｌ
）／ＲＭＳ(C)が１．０以下となり、合わせて表
面粗さのパラメータＳＫ値が軸方向及び円周方向
の何れも−１．６以下となるようにした内燃機関
におけるコネクテイングロツド用針状ころ軸受。 (2) ピストンピンの表面に化成処理を施した請
求項(1)に記載の内燃機関におけるコネクテイン
グロツド用針状ころ軸受。[Claims for Utility Model Registration] (1) Needle roller bearings are interposed between the connecting rod and the piston pin and between the crank pin, and at least between the connecting rod and the piston pin. In needle roller bearings, a countless number of small independent concave depressions are randomly formed on the surface of the needle roller to improve the surface roughness of the needle roller.
When both the axial direction and the circumferential direction are determined and expressed by the parameter RMS, the axial surface roughness RMS (L
) and the circumferential surface roughness RMS(C) RMS(L
)/RMS(C) is 1.0 or less, and the surface roughness parameter SK value is -1.6 or less in both the axial and circumferential directions for connecting rods in internal combustion engines. Needle roller bearings. (2) The needle roller bearing for a connecting rod in an internal combustion engine according to claim (1), wherein the surface of the piston pin is subjected to a chemical conversion treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989146840U JP2534793Y2 (en) | 1989-12-20 | 1989-12-20 | Needle roller bearings for connecting rods in internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989146840U JP2534793Y2 (en) | 1989-12-20 | 1989-12-20 | Needle roller bearings for connecting rods in internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0384418U true JPH0384418U (en) | 1991-08-27 |
| JP2534793Y2 JP2534793Y2 (en) | 1997-05-07 |
Family
ID=31693383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989146840U Expired - Lifetime JP2534793Y2 (en) | 1989-12-20 | 1989-12-20 | Needle roller bearings for connecting rods in internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2534793Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006001124A1 (en) * | 2004-06-25 | 2006-01-05 | Ntn Corporation | Rolling bearing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6124818A (en) * | 1984-07-14 | 1986-02-03 | Ntn Toyo Bearing Co Ltd | Rolling body of bearing |
| JPS6449715A (en) * | 1987-08-20 | 1989-02-27 | Diesel Kiki Co | Needleform roller bearing |
-
1989
- 1989-12-20 JP JP1989146840U patent/JP2534793Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6124818A (en) * | 1984-07-14 | 1986-02-03 | Ntn Toyo Bearing Co Ltd | Rolling body of bearing |
| JPS6449715A (en) * | 1987-08-20 | 1989-02-27 | Diesel Kiki Co | Needleform roller bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006001124A1 (en) * | 2004-06-25 | 2006-01-05 | Ntn Corporation | Rolling bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2534793Y2 (en) | 1997-05-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |