JPH0117694Y2 - - Google Patents
Info
- Publication number
- JPH0117694Y2 JPH0117694Y2 JP1983135297U JP13529783U JPH0117694Y2 JP H0117694 Y2 JPH0117694 Y2 JP H0117694Y2 JP 1983135297 U JP1983135297 U JP 1983135297U JP 13529783 U JP13529783 U JP 13529783U JP H0117694 Y2 JPH0117694 Y2 JP H0117694Y2
- Authority
- JP
- Japan
- Prior art keywords
- base material
- hardness
- circumferential surface
- covering
- coating material
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 96
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000000576 coating method Methods 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000005253 cladding Methods 0.000 claims 1
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910001361 White metal Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010762 marine fuel oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000010969 white metal Substances 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Description
【考案の詳細な説明】
本考案は、滑り軸受に関し、もつと詳しくは裏
金と、その裏金の半径方向内方に固定される硬質
の基材と、その基材の内周面に電気メツキなどに
よつて形成された被覆材とを有する、所謂、三元
軸受に関する。[Detailed Description of the Invention] The present invention relates to a sliding bearing, and more specifically, it includes a backing metal, a hard base material fixed radially inward of the backing metal, and an electroplated material on the inner peripheral surface of the base material. The present invention relates to a so-called three-way bearing having a covering material formed by.
このような滑り軸受は、高荷重に耐えることが
でき、主として中高速デイーゼル機関のクランク
軸を支持する主軸受、連接棒を支持する軸受、お
よびピストンピンを支持する軸受などとして使用
されている。 Such sliding bearings can withstand high loads and are mainly used as main bearings that support the crankshafts of medium- to high-speed diesel engines, bearings that support connecting rods, bearings that support piston pins, and the like.
典型的な先行技術は、第１図に示されている。
裏金１の半径方向内方には、硬質の基材２が固定
されており、この基材２の内周面には電気メツキ
によつて軟質の被覆材３が電着される。耐荷重能
力は、基材２によつて発揮される。被覆材３は、
軸受軌道面を形成し、なじみ運転中に局所当たり
を吸収する作用を果たすとともに、潤滑油中に含
まれる硬質の異物４を埋収し、これによつて基材
２とジヤーナルの軌道面が損傷するのを防止する
働きを果す。基材２は、例えば鉛青銅等から成
る。被覆材３は、軟質の材料から成る。 A typical prior art is shown in FIG.
A hard base material 2 is fixed to the inside of the back metal 1 in the radial direction, and a soft covering material 3 is electrodeposited on the inner peripheral surface of the base material 2 by electroplating. The load-bearing capacity is exhibited by the base material 2. The covering material 3 is
It forms the bearing raceway surface and acts to absorb local contact during break-in operation, and also buries hard foreign matter 4 contained in the lubricating oil, thereby damaging the base material 2 and the journal raceway surface. It serves the purpose of preventing The base material 2 is made of lead bronze, for example. The covering material 3 is made of a soft material.
被覆材３を厚肉とすれば、硬質異物４の埋収能
力は向上するけれども、この被覆材３の強度は小
さいので、実際には、その厚みは軸径が大きいと
厚くなるが、例えば２／100〜６／100mm程度である。し
たがつて、被覆材３の埋収能力を越える大きい寸
法形状を有する異物４は、被覆材３内に埋没する
ことができず、被覆材３の表面から半径方向内方
に突出し、ジヤーナルによつてその異物４が周方
向に動かされ、例えば第２図に示されるように、
周方向（第２図の左右方向）に伸びる剥離傷５が
形成される。剥離傷が形成されることによつて、
基材２が露出し、潤滑油膜や切れ、軸受の焼損を
招来する。 If the sheathing material 3 is made thicker, the ability to bury the hard foreign matter 4 will be improved, but since the strength of this sheathing material 3 is small, in reality, the thickness will increase as the shaft diameter becomes larger. /100 to 6/100mm. Therefore, foreign matter 4 having a large size and shape exceeding the burying capacity of the sheathing material 3 cannot be buried in the sheathing material 3, protrudes radially inward from the surface of the sheathing material 3, and is trapped by the journal. Then, the foreign object 4 is moved in the circumferential direction, for example, as shown in FIG.
Peeling scratches 5 are formed that extend in the circumferential direction (horizontal direction in FIG. 2). Due to the formation of peeling scars,
The base material 2 is exposed, causing a lubricating oil film, cuts, and bearing burnout.
このような軸受の焼損を防止するために、従来
では、被覆材３の剥離の面積がたとえばその被覆
材３の展開面積の１／２、投影面積の２／３程度に達し
たときに取り替えているけれども、このような取
替作業の判断は、熟練した技能を必要とする。 In order to prevent such bearing burnout, conventionally, the bearing is replaced when the peeled area of the sheathing material 3 reaches, for example, about 1/2 of the developed area of the sheathing material 3, or 2/3 of the projected area. However, such judgment regarding replacement work requires skilled skills.
本考案の目的は、被覆材の硬質異物による剥離
を可及的に防ぐことができるようにした滑り軸受
を提供することである。 An object of the present invention is to provide a sliding bearing that can prevent peeling of the coating material due to hard foreign matter as much as possible.
潤滑油中に硬質の異物が混入する可能性は近時
の燃料油、特に舶用燃料油の劣質化に伴い燃焼生
成物の発生量が多くなつているため増加の傾向に
ある。このため主軸受、連接棒軸受が硬質異物の
ため破損する可能性も高くなつている。 The possibility that hard foreign matter will be mixed into lubricating oil is increasing as the quality of modern fuel oils, particularly marine fuel oils, has deteriorated and the amount of combustion products generated has increased. As a result, there is a high possibility that the main bearing and connecting rod bearing will be damaged due to hard foreign matter.
したがつて本考案の目的は、劣質化する燃料油
事情に対応可能な滑り軸受を提供することでもあ
る。 Therefore, an object of the present invention is also to provide a sliding bearing that can cope with the deterioration of fuel oil conditions.
舶用燃料油の品質は世界各地でしかも時間的に
も一定していないため、運転時間経過を判断して
軸受を整備するだけでは軸受に侵入した硬質異物
による軸受の損傷を回避できない。このような必
要性を背景に本考案がなされた。 Since the quality of marine fuel oil is not constant around the world and over time, it is not possible to avoid damage to the bearings due to hard foreign objects that have entered the bearings simply by determining the elapsed operating hours and servicing the bearings. The present invention was developed against the background of such needs.
本考案は、裏金７の内周面８上に、基材９が固
定され、この基材９は、軸直角断面が円形である
内周面１０を有し、
基材９の内周面１０には、半径方向内方に開放
した複数の凹所１１が点在して形成され、
各凹所１１内には、第１被覆材１２がそれぞれ
埋められ、
この第１被覆材１２の半径方向内方の表面は、
基材９の内周面１０と同一の前記円形に形成さ
れ、
基材９の内周面１０上と、第１被覆材１２の半
径方向内方の前記表面上とに、全周面に亘つて、
第２被覆材１３が形成され、
裏金７の硬度をH7、基材９の硬度をH9、第１
被覆材１２の硬度をH12、および第２被覆材１３
の硬度をH13とするとき、
H7＞H9＞H13＞H12
となるように定められることを特徴とする滑り軸
受である。 In the present invention, a base material 9 is fixed on the inner peripheral surface 8 of the back metal 7, and this base material 9 has an inner peripheral surface 10 whose cross section perpendicular to the axis is circular. A plurality of recesses 11 that are open inward in the radial direction are formed in a scattered manner, and a first covering material 12 is filled in each of the recesses 11, and a first covering material 12 is formed in the radial direction of the first covering material 12. The inner surface is
It is formed in the same circular shape as the inner circumferential surface 10 of the base material 9, and is applied over the entire circumferential surface on the inner circumferential surface 10 of the base material 9 and on the radially inner surface of the first coating material 12. Then,
The second coating material 13 is formed, and the hardness of the backing metal 7 is H7, the hardness of the base material 9 is H9, and the hardness of the first coating material 13 is
The hardness of the covering material 12 is H12, and the hardness of the second covering material 13 is
This is a sliding bearing characterized in that, when the hardness of is H13, H7>H9>H13>H12.
第３図は、本考案の一実施例の一部の断面図で
ある。低炭素鋼などから成る裏金７は、軸径の２
〜３％程度の厚みを有し、環状に形成されてい
る。裏金７の内周面８には、厚みが例えば0.6〜
1.1mmである基材９が固定される。基材９は、硬
質材料から成り、たとえば鉛青銅やアルミニウム
合金が好適している。このような基材９は、裏金
７の内周面８上に焼結によつて形成され、あるい
はまた遠心鋳造法によつて形成される。 FIG. 3 is a cross-sectional view of a portion of an embodiment of the present invention. The back metal 7 made of low carbon steel or the like has a shaft diameter of 2
It has a thickness of about 3% and is formed in an annular shape. The inner circumferential surface 8 of the back metal 7 has a thickness of, for example, 0.6~
A base material 9 having a diameter of 1.1 mm is fixed. The base material 9 is made of a hard material, preferably lead bronze or aluminum alloy, for example. Such a base material 9 is formed on the inner circumferential surface 8 of the backing metal 7 by sintering or alternatively by centrifugal casting.
基材９は、軸直角断面が円形である内周面１０
を有する。この内周面１０には、半径方向内方
（第３図の上方）に開放した複数の凹所１１が形
成されている。 The base material 9 has an inner circumferential surface 10 having a circular cross section perpendicular to the axis.
has. A plurality of recesses 11 are formed in this inner circumferential surface 10 and open radially inward (upward in FIG. 3).
第４図は、基材９の周方向展開図である。基材
９の内周面１０には、複数の凹所１１が点在して
形成される。この凹所１１は、内周面１０に球面
突起を備えた工具を圧着させることによつて形成
することができる。 FIG. 4 is a developed view of the base material 9 in the circumferential direction. A plurality of recesses 11 are formed in the inner circumferential surface 10 of the base material 9 in a scattered manner. This recess 11 can be formed by pressing a tool provided with a spherical protrusion onto the inner circumferential surface 10.
凹所１１には、被覆材１２が埋められている。
この被覆材１２上と内周面１０上とには、全周面
に亘つて被覆材１３が形成される。 A covering material 12 is buried in the recess 11.
A covering material 13 is formed on the covering material 12 and on the inner circumferential surface 10 over the entire circumferential surface.
凹所１１に被覆材１２を埋めるに当つては、第
５図に示されるように凹所１１および内周面１０
上に亘つて被覆材１２を溶融状態で流し込む。被
覆材１２の冷却後に第５図２で示されるように機
械切削または研削を行なつて、凹所１１に埋めら
れている被覆材１２と内周面１０とが、単一の曲
率半径を有する円形となるように形成される。 When filling the recess 11 with the covering material 12, as shown in FIG.
The coating material 12 is poured in a molten state over the top. After the coating material 12 has cooled, mechanical cutting or grinding is performed as shown in FIG. It is formed into a circular shape.
上述の第５図２で示されるように凹所１１に被
覆材１２が埋められた状態において、電気メツキ
によつて被覆材１３が、被覆材１２と内周面１０
との全周面に亘つて形成される。被覆材１３の厚
みは、たとえば20〜30μｍであつてもよい。凹所
の深さはたとえば0.5〜１mmであつてもよい。凹
所１１に埋められる被覆材１２は、たとえばホワ
イトメタルであり、全周面に亘つて形成される被
覆材１３は、たとえば鉛と錫との合金などであ
る。このような被覆材１２，１３は軟質であり、
被覆材１３はジヤーナルに馴み性がよく、被覆材
１２内には、被覆材１３の厚みよりも大径の異物
を埋収することができる。 With the coating material 12 buried in the recess 11 as shown in FIG.
It is formed over the entire circumferential surface. The thickness of the covering material 13 may be, for example, 20 to 30 μm. The depth of the recess may be, for example, 0.5 to 1 mm. The covering material 12 buried in the recess 11 is made of, for example, white metal, and the covering material 13 formed over the entire circumference is made of, for example, an alloy of lead and tin. Such coating materials 12 and 13 are soft,
The covering material 13 has good conformability to the journal, and foreign matter having a diameter larger than the thickness of the covering material 13 can be buried within the covering material 12.
裏金７の硬度をH7、基材９の硬度をH9、被覆
材１２の硬度をH12および被覆材１３の硬度を
H13とするとき、
H7＞H9＞H13＞H12 …(1)
となるように定められる。被覆材１２の半径方向
内方の表面は、第３図に明らかに示されるよう
に、基材９の内周面１０と同一の前記円形に形成
されている。第２被覆材１３は、上述のように基
材９の内周面１０上と、被覆材１２の半径方向内
方の表面上とに形成されている。 The hardness of the back metal 7 is H7, the hardness of the base material 9 is H9, the hardness of the coating material 12 is H12, and the hardness of the coating material 13 is
When H13 is assumed, H7>H9>H13>H12...(1) is determined. The radially inner surface of the covering 12 is formed into the same circular shape as the inner circumferential surface 10 of the base 9, as clearly shown in FIG. The second covering material 13 is formed on the inner circumferential surface 10 of the base material 9 and on the radially inner surface of the covering material 12 as described above.
以上のように本考案によれば、基材の内周面に
形成された被覆材の厚み内に埋収し得ない硬質異
物は、凹所内の被覆材内に埋収することができ
る。したがつて被覆材の硬質異物による剥離を防
ぐことが確実に可能になる。そのため潤滑油膜が
切れることが防がれ、軸受の焼損を防ぐことがで
き、使用寿命を異物が凹所に充満するまで長期間
に亘つて延長することが可能となる。 As described above, according to the present invention, hard foreign matter that cannot be buried within the thickness of the coating material formed on the inner peripheral surface of the base material can be buried in the coating material in the recess. Therefore, it is possible to reliably prevent the coating material from peeling off due to hard foreign matter. Therefore, the lubricating oil film is prevented from being cut, the bearing can be prevented from burning out, and the service life can be extended for a long period of time until the recesses are filled with foreign matter.
さらに本考案によれば、硬度が裏金７において
最も大きく、基材９、第２被覆材１３および第１
被覆材１２の順序で硬度が低下するように選ばれ
ているので、高硬度の異物は、第２被覆材１３を
貫通して、第１被覆材１２内に入込むことが可能
になり、しかもこの異物は第１被覆材１２内に入
込んだままに保たれる。したがつて異物が再び第
２被覆材１３上に出ていくことがなく、これによ
つて第２被覆材１３の剥離を確実に防ぐことがで
きる。 Further, according to the present invention, the hardness is greatest in the backing metal 7, and the hardness is greatest in the base material 9, the second coating material 13, and the
Since the hardness is selected to decrease in the order of the coating materials 12, it becomes possible for foreign substances with high hardness to penetrate the second coating material 13 and enter the first coating material 12. This foreign material remains trapped within the first covering material 12. Therefore, the foreign matter does not come out onto the second coating material 13 again, and thereby the second coating material 13 can be reliably prevented from peeling off.
さらにまた本考案では、基材９の凹所１１は点
在して形成されており、換言すると凹所１１は連
続していないので、高硬度の異物は１つの凹所１
１内に入込んだ後には、その凹所１１内に入込ん
だ状態が保持され、異物が第１被覆材１２に埋め
込まれた状態で移動することがない。このことに
よつて、第２被覆材１３の損傷を可及的に少なく
抑えることが可能となる。 Furthermore, in the present invention, the recesses 11 of the base material 9 are formed in a scattered manner, in other words, the recesses 11 are not continuous, so that foreign substances with high hardness are concentrated in one recess 1.
After entering into the first covering material 12, the foreign material remains in the recess 11, and does not move while being embedded in the first covering material 12. This makes it possible to suppress damage to the second covering material 13 as much as possible.
第１図は先行技術の一部の断面図、第２図は被
覆材の周方向展開図、第３図は本考案の一実施例
の一部の断面図、第４図は基材９の内周面１０の
周方向展開図、第５図は被覆材１２，１３の製造
工程を示す断面図である。
７……裏金、９……基材、１１……凹所、１２
……第１被覆材、１３……第２被覆材。
FIG. 1 is a sectional view of a part of the prior art, FIG. 2 is a developed view in the circumferential direction of the covering material, FIG. FIG. 5 is a developed view of the inner peripheral surface 10 in the circumferential direction, and is a sectional view showing the manufacturing process of the covering materials 12 and 13. 7... Back metal, 9... Base material, 11... Recess, 12
...First covering material, 13... Second covering material.
Claims (1)
の基材９は、軸直角断面が円形である内周面１０
を有し、 基材９の内周面１０には、半径方向内方に開放
した複数の凹所１１が点在して形成され、 各凹所１１内には、第１被覆材１２がそれぞれ
埋められ、 この第１被覆材１２の半径方向内方の表面は、
基材９の内周面１０と同一の前記円形に形成さ
れ、 基材９の内周面１０上と、第１被覆材１２の半
径方向内方の前記表面上とに、全周面に亘つて、
第２被覆材１３が形成され、 裏金７の硬度をH7、基材９の硬度をH9、第１
被覆材１２の硬度をH12、および第２被覆材１３
の硬度をH13とするとき、 H7＞H9＞H13＞H12 となるように定められることを特徴とする滑り軸
受。[Claims for Utility Model Registration] A base material 9 is fixed on the inner peripheral surface 8 of the back metal 7, and this base material 9 has an inner peripheral surface 10 whose cross section perpendicular to the axis is circular.
The inner circumferential surface 10 of the base material 9 is dotted with a plurality of recesses 11 that open radially inward, and each recess 11 has a first coating material 12 thereon. The radially inner surface of this first cladding 12 is filled with:
It is formed in the same circular shape as the inner circumferential surface 10 of the base material 9, and is applied over the entire circumferential surface on the inner circumferential surface 10 of the base material 9 and on the radially inner surface of the first coating material 12. Then,
The second coating material 13 is formed, and the hardness of the backing metal 7 is H7, the hardness of the base material 9 is H9, and the hardness of the first coating material 13 is
The hardness of the covering material 12 is H12, and the hardness of the second covering material 13 is
A sliding bearing characterized in that when the hardness of is H13, H7>H9>H13>H12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13529783U JPS6041626U (en) | 1983-08-30 | 1983-08-30 | plain bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13529783U JPS6041626U (en) | 1983-08-30 | 1983-08-30 | plain bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6041626U JPS6041626U (en) | 1985-03-23 |
| JPH0117694Y2 true JPH0117694Y2 (en) | 1989-05-23 |
Family
ID=30304574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13529783U Granted JPS6041626U (en) | 1983-08-30 | 1983-08-30 | plain bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6041626U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011089495A (en) * | 2009-10-23 | 2011-05-06 | Taiho Kogyo Co Ltd | Swash plate |
| CN103089572A (en) * | 2011-11-03 | 2013-05-08 | 上海三电贝洱汽车空调有限公司 | Compressor swash plate |
| WO2014157650A1 (en) * | 2013-03-29 | 2014-10-02 | 大豊工業株式会社 | Aluminum alloy, slide bearing, and slide bearing manufacturing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50111543U (en) * | 1974-02-20 | 1975-09-11 | ||
| JPS5497655U (en) * | 1977-12-23 | 1979-07-10 |
-
1983
- 1983-08-30 JP JP13529783U patent/JPS6041626U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6041626U (en) | 1985-03-23 |
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