JP2549642Y2 - Cylinder sleeve of internal combustion engine - Google Patents

Cylinder sleeve of internal combustion engine

Info

Publication number
JP2549642Y2
JP2549642Y2 JP1994008644U JP864494U JP2549642Y2 JP 2549642 Y2 JP2549642 Y2 JP 2549642Y2 JP 1994008644 U JP1994008644 U JP 1994008644U JP 864494 U JP864494 U JP 864494U JP 2549642 Y2 JP2549642 Y2 JP 2549642Y2
Authority
JP
Japan
Prior art keywords
cylinder sleeve
cutting
cylinder
inner diameter
plating layer
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 - Lifetime
Application number
JP1994008644U
Other languages
Japanese (ja)
Other versions
JPH0722051U (en
Inventor
日出夫 近藤
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.)
Suzuki Motor Co Ltd
Original Assignee
Suzuki Motor 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 Suzuki Motor Co Ltd filed Critical Suzuki Motor Co Ltd
Priority to JP1994008644U priority Critical patent/JP2549642Y2/en
Publication of JPH0722051U publication Critical patent/JPH0722051U/en
Application granted granted Critical
Publication of JP2549642Y2 publication Critical patent/JP2549642Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Electroplating Methods And Accessories (AREA)

Description

【考案の詳細な説明】[Detailed description of the invention]

【0001】[0001]

【産業上の利用分野】この考案は、内周に耐摩耗性のメ
ッキを施す内燃機関のシリンダースリーブの改良に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a cylinder sleeve of an internal combustion engine in which an inner periphery is plated with wear resistance.

【0002】[0002]

【従来の技術】内燃機関のシリンダーでは、軽合金など
で鋳造したシリンダーブロックのシリンダー内周に耐摩
耗性のメッキを施して使用することがある。しかし、こ
の場合、単気筒の場合は、直接シリンダーブロックにメ
ッキを施しても、メッキ設備が簡単にできるが、多気筒
のシリンダーブロックの場合は、メッキ設備が大がかり
になり、費用がかかると共に、作業能率も悪くて、大巾
にコストアップする。
2. Description of the Related Art In a cylinder of an internal combustion engine, an inner circumference of a cylinder block of a cylinder block cast with a light alloy or the like is sometimes used after being plated with wear resistance. However, in this case, in the case of a single cylinder, plating can be easily performed even if plating is performed directly on the cylinder block.However, in the case of a multi-cylinder cylinder block, the plating equipment becomes large and expensive, The work efficiency is poor, and the cost is greatly increased.

【0003】このため、多気筒のシリンダーブロックの
場合は、図3に示すように、上端外周に鍔Aを設けたシ
リンダースリーブBの内周に、耐摩耗性のメッキ層Cを
施したものを設け、このシリンダースリーブBをシリン
ダーブロックDの孔Eに挿入固定し、メッキはシリンダ
ースリーブBが単体のうちに施してメッキ設備が小さく
作業性もよいように工夫している。そして、シリンダー
ブロックDにシリンダースリーブBを挿入固定した場合
に、図に二点鎖線で示すように、シリンダーブロックD
の上面とシリンダースリーブBの上面に不揃いができる
ので、僅かに切削代を設けておいて、切削加工を施して
上面を均一にする。この上面には、ガスケットを挟んで
シリンダーヘッドを締着し、ガスケットでシールする必
要があるので、シール性を保つ面精度が求められる。
For this reason, in the case of a multi-cylinder cylinder block, as shown in FIG. 3, a cylinder sleeve B provided with a flange A on the upper end outer periphery is provided with a wear-resistant plating layer C on the inner periphery. The cylinder sleeve B is inserted and fixed in the hole E of the cylinder block D, and the plating is applied to the cylinder sleeve B as a single body so that plating equipment is small and workability is good. When the cylinder sleeve B is inserted and fixed in the cylinder block D, as shown by a two-dot chain line in FIG.
The upper surface of the cylinder sleeve B and the upper surface of the cylinder sleeve B can be irregular. Therefore, a slight allowance is provided, and a cutting process is performed to make the upper surface uniform. On this upper surface, it is necessary to fasten a cylinder head with a gasket therebetween and seal with a gasket, so that surface accuracy for maintaining the sealing performance is required.

【0004】ところで、上面を切削加工によって平面に
仕上げるときに、バイトがメッキ層Cにもかかり、メッ
キ層Cの上端に細かい剥離ができたり、加工面の面精度
不良ができることがあり、特に剥離ができると、使用中
に拡がって、著しく耐久性が低下する不都合がある。
又、メッキ層Cは硬く、切削バイトの寿命を低下させる
問題がある。メッキシリンダースリーブ又はメッキシリ
ンダーには、実公昭56−1010号公報、実公昭55
−23442号公報、特開昭49−127016号公報
などが知られている。
However, when the upper surface is cut into a flat surface by cutting, a bite is also applied to the plating layer C, and fine peeling may occur at the upper end of the plating layer C, or surface precision of the processed surface may be poor. If it is formed, it spreads during use, and there is a disadvantage that the durability is remarkably reduced.
Further, the plating layer C is hard and has a problem of shortening the life of the cutting tool. The plating cylinder sleeve or plating cylinder is disclosed in Japanese Utility Model Publication No. Sho 56-1010,
Japanese Patent Application Laid-Open No. 23442/1990 and Japanese Patent Application Laid-Open No. 49-127016 are known.

【0005】[0005]

【考案が解決しようとする課題】この考案は、シリンダ
ースリーブ内周上端にメッキ層を施さない切削代とな
る切削部を設け、上面の切削加工上の不都合を排除でき
て、生産性を高めることができる内燃機関のシリンダー
スリーブを得ることを課題とする。
[Problem to be Solved by the Invention] This invention provides a cutting allowance in which a plating layer is not applied to the inner peripheral upper end of the cylinder sleeve.
An object of the present invention is to provide a cylinder sleeve of an internal combustion engine that can provide a cutting portion that eliminates inconvenience in cutting the upper surface and can increase productivity.

【0006】[0006]

【課題を解説するための手段】本考案は、内周面にメッ
キ層を施したシリンダースリーブをシリンダーブロック
に挿入固定する内燃機関のシリンダースリーブに於て、
前記シリンダースリーブは、ピストンが作動する内径を
有する内径部と、シリンダースリーブの上端に形成され
ていると共に前記シリンダーブロックに挿入後に上面を
該ブロック上面と同一平面に仕上げるための切削代とな
る切削部とを有してなり、前記内径部と切削部との間に
曲面部を形成すると共に、切削部は内径部と断面平行に
形成しかつ非メッキ領域とすることを特徴とする内燃機
関のシリンダースリーブの構成により、前記課題を解決
するものである。
SUMMARY OF THE INVENTION The present invention relates to a cylinder sleeve of an internal combustion engine in which a cylinder sleeve having a plated layer on an inner peripheral surface is inserted and fixed in a cylinder block.
The cylinder sleeve defines the inner diameter at which the piston operates.
Having an inner diameter and formed at the upper end of the cylinder sleeve
And after inserting it into the cylinder block,
It is a cutting allowance for finishing on the same plane as the block upper surface.
And a cutting portion between the inner diameter portion and the cutting portion.
While forming a curved surface part, the cutting part is parallel to the inner diameter part in cross section.
The object is achieved by a structure of a cylinder sleeve of an internal combustion engine characterized by being formed and being a non-plated region .

【0007】[0007]

【作用】本考案によれば、シリンダースリーブの上端
、該スリーブをシリンダーブロックに挿入後に上面を
該ブロック上面と同一面に仕上げるための切削代となる
切削部を設け、切削部を非メッキ領域とするので、上面
切削時にメッキ層の剥離が防げる。
According to the present invention , the upper surface of the cylinder sleeve is inserted into the cylinder block after the sleeve is inserted into the cylinder block.
It becomes a cutting allowance for finishing on the same surface as the block upper surface
Since a cutting part is provided and the cutting part is a non-plated area,
The peeling of the plating layer during cutting can be prevented.

【0008】[0008]

【実施例】以下、本考案の実施例を図面を参照して説明
する。図1および図2に示すようにシリンダースリーブ
1は、上端外周に鍔2が設けてあって、シリンダーブロ
ック3の孔4との軸方向の位置決めにしてある。シリン
ダースリーブ1は、内周にメッキ層6が施されかつピス
トンが作動する内径を有する内径部7と、シリンダース
リーブ1の上端に形成されていると共に前記シリンダー
ブロック3に挿入後に上面を該ブロック3上面と同一平
面に仕上げるための切削代となる切削部8とを有してな
る。切削部8は、内周が内径部7よりもわずかに内径が
大きくした拡径部5になっている。また、切削部8内周
の拡径部5は、内周面の縦断面が直線形状で、内径部7
と断面平行に形成している。 切削部8内周の拡径部5
は、内径で1mm程度、深さで1mm程度でよい。ま
た、拡径部5の下端は、曲面でシリンダースリーブ1の
内径部7と切削部8との間を連続させる曲面部9を形成
する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the cylinder sleeve 1 is provided with a flange 2 on the outer periphery of the upper end, and is positioned axially with the hole 4 of the cylinder block 3. The cylinder sleeve 1 is provided with a plating layer 6
An inner diameter part 7 having an inner diameter where the ton operates, and a cylinder.
The cylinder formed at the upper end of the leave 1
After being inserted into the block 3, the upper surface is flush with the upper surface of the block 3.
And a cutting portion 8 serving as a cutting allowance for finishing the surface.
You. The inner diameter of the cutting portion 8 is slightly smaller than that of the inner diameter portion 7.
The enlarged diameter portion 5 is provided. Also, the inner circumference of the cutting part 8
The enlarged diameter portion 5 has an inner peripheral surface having a straight vertical section and an inner diameter portion 7.
Is formed in parallel with the section. The enlarged diameter part 5 on the inner circumference of the cutting part 8
May be about 1 mm in inner diameter and about 1 mm in depth. In addition, the lower end of the enlarged diameter portion 5 forms a curved surface portion 9 that continues between the inner diameter portion 7 of the cylinder sleeve 1 and the cutting portion 8 with a curved surface.
I do.

【0009】このようにしたシリンダースリーブ1の内
径部7の内周には、耐摩耗性のメッキ層6を施し、切削
部8の内周の拡径部5は非メッキ領域とする。メッキ層
6は、硬質クロムメッキ、セラミック粒子を入れた複合
メッキなどが適する。拡径部5は、シリンダースリーブ
1の内周より径外側へ向けて凹んでいているので、メッ
キ層6は、殆どつかない。又、拡径部5下端の曲面にし
た部分(曲面部9)は、メッキ層6が拡径部5に向かっ
て、徐々に薄く付着するように仕上げる。
In the cylinder sleeve 1 thus constructed,
The inner peripheral diameter portion 7, and facilities the wear resistance of the plating layer 6, the cutting
The enlarged diameter portion 5 on the inner periphery of the portion 8 is a non-plated region. For the plating layer 6, hard chrome plating, composite plating containing ceramic particles, or the like is suitable. Since the enlarged diameter portion 5 is recessed radially outward from the inner periphery of the cylinder sleeve 1, the plating layer 6 hardly adheres. The curved portion (curved surface portion 9) at the lower end of the enlarged diameter portion 5 is finished so that the plating layer 6 gradually and thinly adheres toward the enlarged diameter portion 5.

【0010】このようにして、メッキ層6を施したシリ
ンダースリーブ1をシリンダーブロック3の孔4に、冷
し嵌め又は焼嵌めなどによって挿入固定する。挿入後
は、シリンダーブロック3の上面と、シリンダースリー
ブ1の上面の不揃いを、切削加工によって切削し、同一
平面に仕上げる。切削代は、0.5mm程度に設定すれ
ばよい。
In this way, the cylinder sleeve 1 provided with the plating layer 6 is inserted and fixed in the hole 4 of the cylinder block 3 by cold fitting or shrink fitting. After the insertion, the irregularities of the upper surface of the cylinder block 3 and the upper surface of the cylinder sleeve 1 are cut by cutting to finish them on the same plane. The cutting allowance may be set to about 0.5 mm.

【0011】シリンダースリーブ1の上端内周に僅かに
内径を大きく設けた拡径部5は、シリンダースリーブ1
の内周面より凹んでいて、メッキ加工によってシリンダ
ースリーブ1の内径部7にメッキ層6を施す場合に、メ
ッキ層6が付着し難く、殆どメッキ層6がないようにで
きる。このため、シリンダースリーブ1とシリンダーブ
ロック3の上面の不揃いを、図1および図2の2点鎖線
で示すように、切削加工によって切削し同一面に仕上げ
るときに、切削代である切削部8が非メッキ領域である
ので、メッキ層6にバイトが入らず、加工面の面精度を
高めることができ、メッキ層の剥離も防げる。又、バ
イトに対してもよい。こうして、加工精度を高めてメッ
キ層の剥離も防げる。切削後の拡径部5は深さ0.5
mm程度になり、ピストンリングがかかることもないの
で、使用上の不都合もない。尚、シリンダースリーブ1
の内径が大きいもので、拡径部5にもメッキ層ができる
恐れがある場合には、メッキ加工のときに切削部8だけ
マスキングすればよいが、切削部8は、内径部7と断面
平行に直線状に形成するため、マスクも容易になり、か
つ、メッキも付着しない。
The enlarged diameter portion 5 having a slightly larger inner diameter on the inner periphery of the upper end of the cylinder sleeve 1
When the plating layer 6 is formed on the inner diameter portion 7 of the cylinder sleeve 1 by plating, the plating layer 6 is hard to adhere to the inner peripheral surface of the cylinder sleeve 1 and almost no plating layer 6 is formed. For this reason, the irregularities of the upper surfaces of the cylinder sleeve 1 and the cylinder block 3 are changed by a two-dot chain line in FIGS.
As shown by, when cutting is performed by cutting to finish the same surface , the cut portion 8 which is a cutting allowance is a non-plated region.
Therefore, a bite does not enter the plating layer 6, the surface accuracy of the processed surface can be enhanced, and the plating layer 6 can be prevented from peeling off. It is also possible to use bytes. In this way, the processing accuracy is enhanced, and peeling of the plating layer 6 can be prevented. The enlarged diameter part 5 after cutting has a depth of 0.5
mm, and there is no piston ring, so there is no inconvenience in use. In addition, cylinder sleeve 1
The inner diameter is large, and a plating layer is also formed on the enlarged diameter part 5.
If there is a danger, only the cutting part 8 when plating
It is sufficient to mask it, but the cutting part 8 is
The mask is easy to use because it is formed in parallel and straight.
Also, no plating adheres.

【0012】[0012]

【考案の効果】以上説明したように、この考案は、内周
面にメッキ層を施したシリンダースリーブをシリンダー
ブロックに挿入固定するものに於て、シリンダースリー
ブをシリンダーブロックに挿入後にシリンダースリーブ
上面を該ブロック上面と同一平面に仕上げるための切削
代となる切削部を有してなり、前記内径部と切削部との
間に曲面部を形成すると共に、切削部は内径部と断面平
行に形成しかつ非メッキ領域とするので、シリンダース
リーブをシリンダーブロックとの上面の不揃いを切削加
工して平面に仕上げるときに、切削部が非メッキ領域で
あるので、メッキ層の剥離が防げ、加工面の精度が向上
して、生産性の向上が図れる。そして、バイト等の切削
工具の寿命も長くなる。又、使用中のメッキ層の剥離が
拡がることもないので、メッキ層の耐久性も向上する。
しかも、メッキを施すときに切削部をマスクするが、切
削部は、内径部と断面平行に直線状に形成するため、マ
スクも容易になり、メッキが付着しない。
As has been described above devised], this invention is a cylinder sleeve plated layer on the inner peripheral surface At a thing to insert secured to the cylinder block, a cylinder Three
Cylinder sleeve after inserting the cylinder into the cylinder block.
Cutting to finish the upper surface flush with the block upper surface
It has a cutting part as a substitute, and the inner diameter part and the cutting part
A curved surface is formed between them, and the cutting part is
Cylinders because they are formed in rows and are non-plated areas
When cutting the irregularities on the upper surface of the leave with the cylinder block to finish it in a flat surface,
As a result, peeling of the plating layer can be prevented, the precision of the processed surface can be improved, and the productivity can be improved. And cutting of cutting tools
Tool life is also increased. Further, since the peeling of the plating layer during use does not spread, the durability of the plating layer is also improved.
In addition, when plating, the cutting part is masked,
Since the shaved part is formed in a straight line parallel to the cross section with the inner diameter part,
The screen is easy and no plating adheres.

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

【図1】本考案の一実施例の縦断面図である。FIG. 1 is a longitudinal sectional view of one embodiment of the present invention.

【図2】図1の要部の拡大縦断面図である。FIG. 2 is an enlarged vertical sectional view of a main part of FIG.

【図3】従来例を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

1 シリンダースリーブ 3 シリンダーブロック 5 拡径部 6 メッキ層7 内径部 8 折削部 9 曲面部 DESCRIPTION OF SYMBOLS 1 Cylinder sleeve 3 Cylinder block 5 Large diameter part 6 Plating layer 7 Inner diameter part 8 Folded part 9 Curved surface part

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】 内周面にメッキ層を施したシリンダース
リーブをシリンダーブロックに挿入固定する内燃機関の
シリンダースリーブに於て、前記 シリンダースリーブは、ピストンが作動する内径を
有する内径部と、シリンダースリーブの上端に形成され
ていると共に前記シリンダーブロックに挿入後に上面を
該ブロック上面と同一平面に仕上げるための切削代とな
る切削部とを有してなり、 前記内径部と切削部との間に曲面部を形成すると共に、
切削部は内径部と断面平行に形成しかつ非メッキ領域と
する ことを特徴とする内燃機関のシリンダースリーブ。
1. A cylinder sleeve of an internal combustion engine in which a cylinder sleeve having a plating layer formed on an inner peripheral surface thereof is inserted and fixed in a cylinder block, wherein the cylinder sleeve has an inner diameter at which a piston operates.
Having an inner diameter and formed at the upper end of the cylinder sleeve
And after inserting it into the cylinder block,
It is a cutting allowance for finishing on the same plane as the block upper surface.
That it has a cutting unit, to form a curved portion between the cutting portion and the inner diameter portion,
The cutting part is formed in parallel with the inner diameter part in cross section and the non-plated area
A cylinder sleeve for an internal combustion engine.
JP1994008644U 1994-07-18 1994-07-18 Cylinder sleeve of internal combustion engine Expired - Lifetime JP2549642Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1994008644U JP2549642Y2 (en) 1994-07-18 1994-07-18 Cylinder sleeve of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1994008644U JP2549642Y2 (en) 1994-07-18 1994-07-18 Cylinder sleeve of internal combustion engine

Publications (2)

Publication Number Publication Date
JPH0722051U JPH0722051U (en) 1995-04-21
JP2549642Y2 true JP2549642Y2 (en) 1997-09-30

Family

ID=18528664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1994008644U Expired - Lifetime JP2549642Y2 (en) 1994-07-18 1994-07-18 Cylinder sleeve of internal combustion engine

Country Status (1)

Country Link
JP (1) JP2549642Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100832595B1 (en) * 2007-04-17 2008-05-27 동양물산기업 주식회사 Structure of pto sleeve for tractor
JP5532960B2 (en) * 2010-01-26 2014-06-25 トヨタ自動車株式会社 Thermal spray coating processing method

Also Published As

Publication number Publication date
JPH0722051U (en) 1995-04-21

Similar Documents

Publication Publication Date Title
JP2911003B2 (en) Engine sleeve
EP0866245A3 (en) Metal gasket
JP4135634B2 (en) Engine cylinder liner structure
JPH10252891A (en) Second pressure ring for aluminum cylinder and manufacture therefor
US5419037A (en) Method of inserting, boring, and honing a cylinder bore liner
JP2549642Y2 (en) Cylinder sleeve of internal combustion engine
JPH01152046U (en)
EP1094258A3 (en) Metal gasket assembly for cylinder head
JPS63192936A (en) Cylinder block for water-cooled engine
EP1113200A3 (en) Sealing mechanism for internal combustion engine
EP1179695A3 (en) Cylinder head gasket with partial resin coatings
EP1098114A3 (en) Metal gasket assembly for cylinder head
US5000127A (en) Cylinder sleeve for two-cycle engine
JPH087071Y2 (en) Cylinder structure of internal combustion engine
CA2457122A1 (en) Plasma coating for cylinder liner and method for applying the same
CN1144941C (en) Air Cylinder for multicylinder internal combustion engine
JPH04128539A (en) Cylinder block of engine
JP2855926B2 (en) Internal combustion engine cylinder
US20120304955A1 (en) Method for processing cylinder block, cylinder block and thermal-sprayed cylinder block
JPH0681711A (en) Piston for internal combustion engine
JPS61268848A (en) Manufacture of cylinder
JPS6048624B2 (en) Manufacturing method of aluminum alloy cylinder
JPH0111952Y2 (en)
JPS603310Y2 (en) Combustion chamber of side valve internal combustion engine
KR20090113262A (en) Method for the production of a cylinder crank housing having multiple cylinder sleeves and short cylinder sleeves with material strips fixed thereto