JPH01112014A - Connecting rod - Google Patents
Connecting rodInfo
- Publication number
- JPH01112014A JPH01112014A JP27150287A JP27150287A JPH01112014A JP H01112014 A JPH01112014 A JP H01112014A JP 27150287 A JP27150287 A JP 27150287A JP 27150287 A JP27150287 A JP 27150287A JP H01112014 A JPH01112014 A JP H01112014A
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- rod
- rod material
- quenching
- entire surface
- 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
- 238000005496 tempering Methods 0.000 claims abstract description 12
- 239000002344 surface layer Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 40
- 230000006698 induction Effects 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 abstract description 8
- 238000005242 forging Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract 5
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000005255 carburizing Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、内燃機関のコンロッドに係り、特に軽量化す
るようにしたコンロッドに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a connecting rod for an internal combustion engine, and particularly to a connecting rod that is lightweight.
（従来技術及びその問題点）
従来のコンロッドでは、浸炭材製のコンロッド素材は大
端部、小端部、捍部からなる。このコンロッド素材は例
えばＪＩＳ規格の９０Ｍ鋼等の浸炭材を鍛造した後に、
コンロッド素材全体の表面に銅メツキによるマスキング
層を形成し、大端部、小端部の内面に浸炭焼入れを施す
。(Prior art and its problems) In a conventional connecting rod, the connecting rod material made of carburized material consists of a large end, a small end, and a flange. After forging carburized material such as JIS standard 90M steel, this connecting rod material is
A masking layer is formed by copper plating on the entire surface of the connecting rod material, and the inner surfaces of the large and small ends are carburized and hardened.
コンロッド素材のマスキング層は浸炭焼入れで発生した
歪みを、除去できるようにコンロッド素材全体を浸炭焼
入れで硬化させないために設けである。The masking layer of the connecting rod material is provided to prevent the entire connecting rod material from being hardened by carburizing and quenching so that the distortion generated during carburizing and quenching can be removed.
しかしながら、コンロッド素材は大部分が浸炭焼入れし
ていないので、疲労強度の面で改善の余地があり、コン
ロッド素材の強度を向上することで、コンロッド全体の
質量軽減が可能である。However, since most of the connecting rod material is not carburized and quenched, there is room for improvement in terms of fatigue strength, and by improving the strength of the connecting rod material, it is possible to reduce the mass of the entire connecting rod.
先行技術として、実開昭８１−５２７１５号がある。As a prior art, there is Utility Model Application Publication No. 81-52715.
（発明の目的）
本発明は、強度を向上させて、コンロッド素材を薄肉化
し、軽量化したコンロッドを提供することを目的として
いる。(Objective of the Invention) An object of the present invention is to provide a connecting rod that has improved strength, a thinner connecting rod material, and a lighter weight.
（発明の構成）
（１）技術的手段
本発明は、内燃機関のクランク軸とピストンを連結する
コンロッドにおいて、浸炭材製のコンロッド素材の全面
に浸炭焼入れを施し、大端部と小端部を繋ぐ捍部の一部
に焼戻しを施した後に、前記桿部の焼戻し部分を矯正し
てコンロッド素材の歪みを除き、コンロッド素材全体を
薄肉化するようにしたことを特徴とするコンロッドであ
る。(Structure of the Invention) (1) Technical Means The present invention provides a connecting rod that connects a crankshaft and a piston of an internal combustion engine, in which the entire surface of the connecting rod material made of carburized material is carburized and quenched, and the large end and small end are This connecting rod is characterized in that after tempering a part of the connecting flange part, the tempered part of the rod part is corrected to remove distortion of the connecting rod material and to reduce the thickness of the entire connecting rod material.
（２）作用
捍部の一部だけを焼戻しで、歪み除去可能な状態にして
、歪みを除去し、素材全体に浸炭焼入れを施すことを可
能にし、薄肉化する。(2) Only a part of the working part is tempered to make it possible to remove distortions, and the entire material can be carburized and quenched to make the material thinner.
（実施例）
本発明を採用したコンロッドを示す第１図において、浸
炭材製のコンロッド素材１０は両端部に大端部１１と小
端部１２を有し、中間に捍部１４を設けてなる。大端部
１１、小端部１２には中心線だけで図示するクランクピ
ン０１、ピストンピン０２ （第２図）が図示しない
ニードルローラベアリングを介して嵌合する。(Example) In FIG. 1 showing a connecting rod employing the present invention, a connecting rod material 10 made of carburized material has a large end 11 and a small end 12 at both ends, and a flange 14 is provided in the middle. . A crank pin 01 and a piston pin 02 (FIG. 2), which are shown only by their center lines, fit into the large end 11 and small end 12 via needle roller bearings (not shown).
このコンロッド素材１０は、図示の状態に鍛造で形成し
た後に、全面に浸炭焼入れを施してある。This connecting rod material 10 is formed by forging into the state shown in the drawing, and then carburized and quenched on the entire surface.
浸炭焼入れの際にコンロッド素材１０全体を高温に加熱
するので、浸炭焼入れ後のコンロッド素材１０は歪みを
発生する。この歪みが発生したままではクランクピン０
１．ピストンピン０２の平行度等が狂うので、歪みを除
去する必要がある。Since the entire connecting rod material 10 is heated to a high temperature during carburizing and quenching, the connecting rod material 10 after carburizing and quenching generates distortion. If this distortion continues, the crank pin will be 0.
1. Since the parallelism of the piston pin 02 becomes out of order, it is necessary to remove the distortion.
そこで、捍部１４の長手方向中央部の修正部１６に高周
波焼戻しを施して、修正部１６部分を他の部分より矯正
し易くして、例えばプレス加工等の手段で大端部１１、
小端部１２の端面１８を基準にコンロッド素材１０の歪
みを除去しである。Therefore, the corrected portion 16 at the center in the longitudinal direction of the flange portion 14 is subjected to high-frequency tempering to make the corrected portion 16 easier to correct than other portions, and the large end 11 is fixed by pressing, for example.
Distortion of the connecting rod material 10 is removed using the end surface 18 of the small end portion 12 as a reference.
この高周波焼戻しは、修正部１６の表層だけを焼戻し処
理で軟化し、修正部１６の芯部硬度は他の部分と同様に
所定の硬度を保っており、硬度の高い芯部で強度を維持
するようになっている。したがって、修正部１６に高周
波焼戻しを施しても、コンロッド素材１０全体の強度は
強い。In this induction tempering, only the surface layer of the repaired part 16 is softened by the tempering process, and the core hardness of the repaired part 16 maintains a predetermined hardness like other parts, and the strength is maintained in the core with high hardness. It looks like this. Therefore, even if the modified portion 16 is subjected to induction tempering, the strength of the connecting rod material 10 as a whole is strong.
なお、修正部１６の焼戻し手段は高周波焼戻しに限らず
、同様の効果を奏する他の熱処理でもよい。また、コン
ロッド索材１０の歪み除去もプレス加工に限らず、治具
等を利用することもできる。Note that the tempering means of the correction section 16 is not limited to high-frequency tempering, but may be other heat treatment that produces similar effects. Furthermore, the removal of strain from the connecting rod cable material 10 is not limited to press working, and a jig or the like may also be used.
更に、コンロッドの形状も大端部１１、小端部１２にニ
ードルローラベアリングを使用する場合に限らず、メタ
ルブツシュを使用してもよいし、大端部１２の半分をベ
アリングキャップで形成してもよい。Furthermore, the shape of the connecting rod is not limited to the case where needle roller bearings are used for the large end 11 and small end 12; metal bushings may be used, or half of the large end 12 may be formed with a bearing cap. good.
大端部１１、小端部１２の内面２０には歪み除去後に、
それぞれ研磨加工を施し、前述のニードルローラベアリ
ングのローラが滑かに摺動するようにしである。After removing distortion, the inner surfaces 20 of the large end 11 and small end 12 are
Each is polished so that the rollers of the needle roller bearing mentioned above slide smoothly.
以上の構成では、内面２０をも含むコンロッド素材１０
の全面に浸炭焼入れが可能になるので、コンロッド素材
１０の強度が全体的に向上し、大端部１１、小端部１２
、捍部１４の肉厚を従来より、大巾に薄肉化しである。In the above configuration, the connecting rod material 10 including the inner surface 20 is
Since the entire surface of the connecting rod can be carburized and quenched, the strength of the connecting rod material 10 is improved overall, and the large end 11 and small end 12
, the wall thickness of the flange portion 14 is significantly thinner than in the past.
したがって、コンロッド素材１０の重量が軽くなる。Therefore, the weight of the connecting rod material 10 is reduced.
以上のようなコンロしドを製造する方法を工程順に箇条
書きすると、下記の通りである。 ゛■浸炭材を鍛
造してコンロッド素材１０を形成する。The method for manufacturing the stove as described above is listed in the order of steps as follows.゛■ Forging the carburized material to form the connecting rod material 10.
■コンロッド素材１０の全面に浸炭焼入れを施す。■Carburizing and quenching the entire surface of the connecting rod material 10.
■修正部１６部分の表層に高周波焼戻しを施す。■Apply induction tempering to the surface layer of the repaired portion 16.
■修正部１６部分を矯正してコンロッド素材１゜の歪み
を除去する。■ Correct the correction part 16 to remove 1° distortion of the connecting rod material.
■内面２０を研磨する。■Polish the inner surface 20.
（発明の効果）
以上説明したように本発明によるコンロッドでは、従来
では浸炭焼入れ後の歪み除去のために、コンロッド索材
１０の全体に浸炭焼入れできなかった点を、第１図の修
正部１６部分を例えば高周波焼戻しで表層だけを軟化し
て、容易に修正部１６部分で歪みを修正できるようにし
たので、コンロッド素材１０の全面に浸炭焼入れが可能
になり、コンロッド素材１０の強度が全体的に向上し、
大端部１１、小端部１２、捍部１４の肉厚を従来より、
大巾に薄肉化できる。したがって、コンロッドを従来よ
り大巾に軽量化できる。(Effects of the Invention) As explained above, in the connecting rod according to the present invention, the modification part 16 in FIG. Since only the surface layer of the connecting rod material 10 is softened by induction tempering, for example, and the distortion can be easily corrected at the correction section 16, the entire surface of the connecting rod material 10 can be carburized and quenched, and the overall strength of the connecting rod material 10 is increased. improved to
The wall thickness of the large end 11, small end 12, and flange 14 has been changed from the conventional one.
Can be made extremely thin. Therefore, the weight of the connecting rod can be made much lighter than before.
また、銅メツキによるマスキングが不要になり、製造工
程を簡略化できる効果がある。Furthermore, masking by copper plating is no longer necessary, which has the effect of simplifying the manufacturing process.
第１図は本発明を採用したコンロッドの正面図、第２図
は第１図の■−■断面図である。１０・・・コンロッド
素材、１１・・・大端部、１２・・・小端部、１４・・
・捍部、１６・・・修正部
特許出願人 川崎重工業株式会社
第１図FIG. 1 is a front view of a connecting rod employing the present invention, and FIG. 2 is a cross-sectional view taken along the line -■ in FIG. 10... Connecting rod material, 11... Big end, 12... Small end, 14...
・Madebe, 16... Revised part Patent applicant Kawasaki Heavy Industries, Ltd. Figure 1
Claims (3)
ロッドにおいて、浸炭材製のコンロッド素材の全面に浸
炭焼入れを施し、大端部と小端部を繋ぐ捍部の一部に焼
戻しを施した後に、前記捍部の焼戻し部分を矯正してコ
ンロッド素材の歪みを除き、コンロッド素材全体を薄肉
化するようにしたことを特徴とするコンロッド。(1) In the connecting rod that connects the crankshaft and piston of an internal combustion engine, the entire surface of the connecting rod material made of carburized material is carburized and quenched, and a part of the flange connecting the large end and small end is tempered. . A connecting rod, characterized in that the tempered portion of the flange portion is corrected to remove distortion of the connecting rod material, thereby reducing the thickness of the entire connecting rod material.
歪みを除去した後に、ニードルローラベアリングを嵌合
するように研磨加工を施してある特許請求の範囲第１項
記載のコンロッド。(2) The connecting rod according to claim 1, wherein the inner surfaces of the large end and the small end are polished to fit a needle roller bearing after removing distortion of the connecting rod material.
施し、焼戻し部分の芯部は硬度を高く維持している特許
請求の範囲第１項記載のコンロッド。(3) The connecting rod according to claim 1, wherein only the surface layer of the tempered portion of the flange portion is subjected to induction tempering, and the core portion of the tempered portion maintains high hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27150287A JPH01112014A (en) | 1987-10-26 | 1987-10-26 | Connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27150287A JPH01112014A (en) | 1987-10-26 | 1987-10-26 | Connecting rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01112014A true JPH01112014A (en) | 1989-04-28 |
| JPH0468486B2 JPH0468486B2 (en) | 1992-11-02 |
Family
ID=17500951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27150287A Granted JPH01112014A (en) | 1987-10-26 | 1987-10-26 | Connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01112014A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0493511U (en) * | 1990-12-28 | 1992-08-13 | ||
| JPH0493509U (en) * | 1990-12-28 | 1992-08-13 | ||
| JP2006144928A (en) * | 2004-11-19 | 2006-06-08 | Yamaha Motor Co Ltd | Connecting rod, engine, automobile and connecting rod manufacturing method |
| CN104196898A (en) * | 2014-09-21 | 2014-12-10 | 金方明 | Injection molding machine main shaft fixing block and heat processing technology thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56156550A (en) * | 1980-04-30 | 1981-12-03 | Kawasaki Heavy Ind Ltd | Manufacture of connecting rod |
| JPS5839729A (en) * | 1981-09-01 | 1983-03-08 | Toyota Motor Corp | Partial tempering method for carburized and hardened parts |
| JPS5934210A (en) * | 1982-07-28 | 1984-02-24 | ユリウス・ブルム・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Drawer guide assembly for drawers |
| JPS63203226A (en) * | 1987-02-19 | 1988-08-23 | Toyota Motor Corp | Manufacture of high strength crank shaft |
-
1987
- 1987-10-26 JP JP27150287A patent/JPH01112014A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56156550A (en) * | 1980-04-30 | 1981-12-03 | Kawasaki Heavy Ind Ltd | Manufacture of connecting rod |
| JPS5839729A (en) * | 1981-09-01 | 1983-03-08 | Toyota Motor Corp | Partial tempering method for carburized and hardened parts |
| JPS5934210A (en) * | 1982-07-28 | 1984-02-24 | ユリウス・ブルム・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Drawer guide assembly for drawers |
| JPS63203226A (en) * | 1987-02-19 | 1988-08-23 | Toyota Motor Corp | Manufacture of high strength crank shaft |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0493511U (en) * | 1990-12-28 | 1992-08-13 | ||
| JPH0493509U (en) * | 1990-12-28 | 1992-08-13 | ||
| JP2006144928A (en) * | 2004-11-19 | 2006-06-08 | Yamaha Motor Co Ltd | Connecting rod, engine, automobile and connecting rod manufacturing method |
| CN104196898A (en) * | 2014-09-21 | 2014-12-10 | 金方明 | Injection molding machine main shaft fixing block and heat processing technology thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0468486B2 (en) | 1992-11-02 |
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