JPH0473417A - Manufacture of connecting rod - Google Patents

Manufacture of connecting rod

Info

Publication number
JPH0473417A
JPH0473417A JP18532090A JP18532090A JPH0473417A JP H0473417 A JPH0473417 A JP H0473417A JP 18532090 A JP18532090 A JP 18532090A JP 18532090 A JP18532090 A JP 18532090A JP H0473417 A JPH0473417 A JP H0473417A
Authority
JP
Japan
Prior art keywords
oil
connecting rod
edge part
large end
supply hole
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.)
Pending
Application number
JP18532090A
Other languages
Japanese (ja)
Inventor
Takashi Miyake
三宅 尚
Hideo Negishi
秀夫 根岸
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.)
Hino Motors Ltd
Original Assignee
Hino Motors 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 Hino Motors Ltd filed Critical Hino Motors Ltd
Priority to JP18532090A priority Critical patent/JPH0473417A/en
Publication of JPH0473417A publication Critical patent/JPH0473417A/en
Pending legal-status Critical Current

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  • Lubrication Of Internal Combustion Engines (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PURPOSE:To manufacture a large edge part at a low cost by carrying out drilling so as to terminate before the inner periphery of the large edge part from a small edge part side and close the lower edge, and carrying out drilling from the edge part of the large edge part so as to be opened at the edge part in the crankpin axis line direction, aslantly penetrating through the large edge part from the lower edge of the hole. CONSTITUTION:An oil feeding hole 22 is formed by carrying out drilling on a connecting rod body 14 from the small edge part 20 side of the connecting rod body 14 so that the oil feeding hole 22 terminates before this side of the inner periphery of a large edge part 18 and the lower edge is closed. Drilling is performed at the large edge part 18 from the edge part 18a of the large edge part 18 so that an oil inlet 24 is opened to the edge part in the axis line direction of a crankpin 12a at the large edge part 18, aslantly penetrating through the large edge part 18 from the closed lower edge of the oil feeding hole 22. At the edge part of the large edge part 18, the oil which leaks from the crank pin 12a is collected and an oil reservoir 26 is formed between a crank arm and the crank pin 12a. The oil inlet 24 is opened to the oil reservoir 26, and oil is introduced from the oil reservoir 26, and oil is supplied into the oil feeding hole 22.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、自動車のエンジンに用いられるピストンとク
ランクとを連接するコンロッドの製造方法の改良に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a method for manufacturing a connecting rod that connects a piston and a crank used in an automobile engine.

〔従来の技術〕[Conventional technology]

コンロッドの小端部のフッシュ内てピストンピンを円滑
に作動させるために、コンロッドに給油孔を設け、クラ
ンクピンか貫通する大端部からこの給油孔を介して小端
部のブツシュに潤滑油を供給することか行なわれている
。このため、コンロッドの大端部は、ピストンピンか貫
通するコンロッドベアリングから給油孔に油を導入する
ために油入口を有する。
In order to smoothly operate the piston pin within the bush at the small end of the connecting rod, an oil supply hole is provided in the connecting rod, and lubricating oil is supplied from the large end through which the crank pin passes through the bush at the small end. supply is being carried out. For this purpose, the large end of the connecting rod has an oil inlet for introducing oil into the oil supply hole from the connecting rod bearing through which the piston pin passes.

従来技術ては、この給油孔は、コンロッドの大端部側か
ら穿孔加工によって形成され、またその油入口は、給油
孔の下端に同軸状に連続して設けられていてコンロッド
ベアリングのアッパメタルの中央で開口していた。
In the conventional technology, this oil supply hole is formed by drilling from the large end side of the connecting rod, and the oil inlet is provided coaxially and continuously at the lower end of the oil supply hole in the center of the upper metal of the connecting rod bearing. It was open.

(発明か解決しようとするW1題) コンロッド大端部のコンロッドベアリングには油膜圧力
がかかっているか、このコンロッドベアリングの中央に
コンロッドの給油孔に連通ずる油入口かあると、この油
入口を通して油膜圧力か抜けるため、コンロッドベアリ
ングのアッパメタルにかかる油膜圧力の分布は、第5図
(A)(B)に示すように、最大油膜圧力P、J、か局
部的に上昇し、従って最小油膜厚さか減少し、このため
コンロッドベアリングの負荷容量か低下してオーバレイ
メタルの疲労及び摩耗か発生する。
(W1 problem to be solved by the invention) If there is an oil film pressure on the connecting rod bearing at the big end of the connecting rod, or if there is an oil inlet in the center of the connecting rod bearing that communicates with the oil supply hole of the connecting rod, the oil film will pass through this oil inlet. As the pressure is released, the distribution of oil film pressure applied to the upper metal of the connecting rod bearing, as shown in Fig. 5 (A) and (B), locally increases the maximum oil film pressure P, J, and therefore the minimum oil film thickness. This reduces the load capacity of the connecting rod bearing, leading to fatigue and wear of the overlay metal.

これを防止するために、高級なオーバレイメタルまたは
軸受台金を使用したり、軸受幅を広くする必要かあって
コンロッド大端部か高価となる問題かあった。
In order to prevent this, it is necessary to use a high-grade overlay metal or bearing base metal, or to widen the bearing width, which makes the connecting rod large end expensive.

本発明の目的は、上記の問題点を回避し、大端部のコン
ロッドベアリングからコンロッドの給油孔に給油する際
にコンロッドベアリングに最大油膜圧力の局部的な上昇
及び最小油膜厚さの減少を起こすことかなく、従ってコ
ンロッドベアリングの負荷容量を向上することかできる
コンロッドを製造する方法を提供することにある。
An object of the present invention is to avoid the above-mentioned problems, and cause a local increase in the maximum oil film pressure and a decrease in the minimum oil film thickness in the connecting rod bearing when lubricating the connecting rod oil supply hole from the connecting rod bearing at the big end. The object of the present invention is to provide a method for manufacturing a connecting rod that can improve the load capacity of the connecting rod bearing without causing any problems.

(課題を解決するための手段) 本発明は、上記の課題を解決するために、ピストンとク
ランクとを連接するコンロッド本体から成り、このコン
ロッド本体には大端部から小端部に延びる給油孔を有す
るコンロウドを製造する方法において、給油孔か大端部
の内周の手前で終って下端か閉じるようにコンロウド本
体の小端部側から穿孔して給油孔を形成し、またこの給
油孔の閉じられた下端から大端部を斜めに貫通して大端
部のクランクピンの軸線方向の端部に開口するようにし
て大端部の縁側から穿孔して油入口を形成することを特
徴とするコンロッドの製造方法を提供するものである。
(Means for Solving the Problems) In order to solve the above problems, the present invention comprises a connecting rod body that connects a piston and a crank, and this connecting rod body has an oil supply hole extending from a large end to a small end. In the method for manufacturing a connecting rod, the oil feeding hole is formed by drilling from the small end side of the connecting rod body so that the oil feeding hole ends before the inner periphery of the large end and closes at the lower end, and the oil feeding hole is The oil inlet is formed by drilling from the edge of the large end so as to diagonally penetrate the large end from the closed lower end and open at the end in the axial direction of the crank pin at the large end. The present invention provides a method for manufacturing a connecting rod.

〔作用〕[Effect]

コンロッド大端部の両端は、この大端部を貫通するクラ
ンクピンとの間でコンロッドベアリングから漏れた油か
充満して油溜めを形成しており、従って給油孔かコンロ
ッドの大端部の内周で開口することかなくその手前て終
っていると、油入口はコンロッドベアリングの中央ては
閉じていてここから油か抜けないで、大端部の両端で開
口するように大端部に斜めに貫通して設けられた油入口
を通して油溜めから給油孔に油か導入される。従って、
コンロッドベアリングのアッパメタルにかかる油膜圧力
か抜けることかなく、このため油膜圧力の分布は、最大
油膜圧力か局部的に上昇することがなく滑らかに変化し
、従って最小油膜厚さか減少することかないのて、コン
ロッドベアリングの負荷容量か向上する。
Both ends of the connecting rod's big end are filled with oil leaking from the connecting rod bearing between the crank pin that passes through this big end, and form an oil reservoir. If the oil inlet ends in front of the connecting rod bearing without opening, the oil inlet will be closed at the center of the connecting rod bearing, and the oil will not come out from there. Oil is introduced from the oil reservoir into the oil supply hole through an oil inlet provided through the oil reservoir. Therefore,
The oil film pressure applied to the upper metal of the connecting rod bearing does not leak out, so the distribution of oil film pressure changes smoothly without locally increasing the maximum oil film pressure, and therefore the minimum oil film thickness does not decrease. , the load capacity of connecting rod bearings is improved.

(実施例) 本発明の実施例を図面を参照して詳細に説明すると、第
1図及び第2図は本発明の方法によって製造されたコン
ロッドlOを示し、このコンロッドlOは、図示しない
ピストンとクランク12とを連接するコンロッド本体1
4と、このコンロッド本体14の下端に設けられクラン
ク12のクランクピン12aかコンロッドベアリング1
6を介して貫通する大端部18と、コンロッド本体14
の上端に設けられ図示しないブツシュを介してピストン
ピンか貫通する小端部20とから成っている。
(Example) An example of the present invention will be described in detail with reference to the drawings. FIGS. 1 and 2 show a connecting rod 10 manufactured by the method of the present invention, and this connecting rod 10 has a piston (not shown) and a piston (not shown). Connecting rod body 1 connecting with crank 12
4 and the crank pin 12a of the crank 12 or the connecting rod bearing 1 provided at the lower end of the connecting rod body 14.
6 and a large end 18 penetrating through the connecting rod body 14.
The small end 20 is provided at the upper end of the piston pin, and the piston pin passes through it through a bush (not shown).

コンロッドlOは、また1コンロツト114に貫通して
設けられコンロッド本体14の大端部18から小端部2
0に給油する給油孔22を有し、この給油孔22は、コ
ンロ・ントベアリンク16から給油孔22に給油する油
入口24を有する。
The connecting rod 10 is also provided penetrating through one connecting rod 114 and extends from the large end 18 of the connecting rod body 14 to the small end 2.
The oil supply hole 22 has an oil inlet 22 for supplying oil to the oil supply hole 22 from the stove bearing link 16.

本発明は、コンロッド10を製造するにちって大端部1
8から小端部20に給油する給油孔22及びその油入口
24を次のようにして形成することにある。即ち、給油
孔22か大端部18の内周の手前て終って下端か閉じる
ようにコンロッド本体14の小端部20側からコンロッ
ド本体14を穿孔して給油孔22を形成し、またこの給
油孔22の閉じられた下端22aから大端部18を斜め
に貫通して大端部18のクランクピン12aの軸線方向
の端部に開口するようにして大端部18の縁側18aか
ら大端部18を穿孔して油入口24を形成する。
In the present invention, when manufacturing the connecting rod 10, the large end 1
The oil supply hole 22 for supplying oil from 8 to the small end 20 and its oil inlet 24 are formed as follows. That is, the oil supply hole 22 is formed by drilling the connecting rod body 14 from the small end 20 side of the connecting rod body 14 so that the oil supply hole 22 ends before the inner periphery of the large end 18 and closes at the lower end. The hole 22 passes obliquely through the large end 18 from the closed lower end 22a and opens at the end in the axial direction of the crank pin 12a of the large end 18 from the edge 18a of the large end 18 to the large end. 18 to form an oil inlet 24.

第3図から解るように、大端部18の端部にはクランク
ビン12aから漏れる油を溜めてクランクアーム12b
との間で油溜め26か形成され、油入口24は、この油
溜め26に開口していてこの油溜め26から油が導入さ
れて給油孔22に油を供給する。
As can be seen from FIG. 3, oil leaking from the crank bottle 12a is collected at the end of the large end 18 and the crank arm 12b
An oil reservoir 26 is formed between the oil reservoir 26 and the oil reservoir 26 , and the oil inlet 24 is open to the oil reservoir 26 , and oil is introduced from the oil reservoir 26 and supplied to the oil supply hole 22 .

このように、給油孔22を大端部工8の内周の手前で終
るように小端部20側からコンロフト本体14を穿孔し
て形成してコンロッドベアリング16の中央ては閉じる
ようにすると、油はコンロッドベアリング16の中央か
ら抜けないて、大端部18の端部で開口するように大端
部14の縁18aから大端部18を斜めに貫通して形成
された油入口24を通して油溜め26から給油孔22に
導入される。
In this way, if the oil supply hole 22 is formed by drilling the conloft main body 14 from the small end 20 side so that it ends before the inner circumference of the big end work 8, and the center of the connecting rod bearing 16 is closed, The oil does not escape from the center of the connecting rod bearing 16, but instead passes through an oil inlet 24 formed diagonally through the large end 18 from the edge 18a of the large end 14 so as to open at the end of the large end 18. The oil is introduced from the reservoir 26 into the oil supply hole 22 .

従って、コンロッドベアリング16のアッパメタル16
Aにかかる油膜圧力か抜けることかなく、油膜圧力Pの
分布は、第4図(A)  (B)に示すようになり、最
大油膜圧力P、1.Iか局部的に上昇することかなく滑
らかに変化し、このため最小油膜厚さか減少することが
ないのてコンロッドベアリング16の負荷容量か向上す
る。
Therefore, the upper metal 16 of the connecting rod bearing 16
The oil film pressure applied to A does not escape, and the distribution of oil film pressure P becomes as shown in FIGS. 4(A) and 4(B), and the maximum oil film pressure P, 1. Since I changes smoothly without locally increasing, the minimum oil film thickness does not decrease, and the load capacity of the connecting rod bearing 16 improves.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、上記のように、コンロッドベアリング
から給油孔に給油する際にコンロッドベアリングの最大
油膜圧力の局部的なI:H及び最小油膜厚さの減少を起
こすことかなく、従ってコンロッドベアリンクの負荷容
量を向上することかてきるのて、高価なオーバレイメタ
ルや軸受台金を使用する必要かなく、また軸受幅を変更
する必要かなく、コンロッド大端部を安価に製造するこ
とかてきる実益かある。
According to the present invention, as described above, when lubricating the oil supply hole from the connecting rod bearing, the local I:H of the maximum oil film pressure of the connecting rod bearing and the minimum oil film thickness do not decrease, and therefore the connecting rod bearing In order to improve the load capacity of the link, it is possible to manufacture the large end of the connecting rod at a low cost without using expensive overlay metal or bearing base metal, or without changing the bearing width. There are some real benefits.

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

第1図乃至第3図は本発明の方法によって製造されたコ
ンロッドの大端部の下半部を省略した正面図、下面図及
び一部を断面にした側面図、第4図は大端部の一部の拡
大断面図、第5図(A)(B)はそれぞれ本発明によっ
て製造されたコンロッドの大端部のベアリングメタルの
軸線方向及び周方向の油膜分布図、第6図(A)(B)
は従来技術のコンロッド大端部のコンロッドベアリング
の軸線方向及び周方向の油膜分布図である。 10−−−−−コンロッド、12−−−−−クランク、
12a−−−−−クランクビン、14−m−コンロッド
本体、16−−−−−コンロツトベアリング、16A−
−−−−アッパメタル、18−−−−一大端部、20−
一−−小端部、22−−−−一給油孔、24 −−油入口、26−−−−−油溜め。
1 to 3 are a front view with the lower half omitted of the large end of a connecting rod manufactured by the method of the present invention, a bottom view, and a side view with a part cut away, and FIG. 4 is a side view of the large end. FIGS. 5(A) and 5(B) are enlarged cross-sectional views of a part of , and FIG. 6(A) are oil film distribution diagrams in the axial direction and circumferential direction of the bearing metal at the large end of the connecting rod manufactured according to the present invention, respectively. (B)
1 is an oil film distribution diagram in the axial direction and circumferential direction of a connecting rod bearing at the large end of a connecting rod according to the prior art. 10------Connecting rod, 12------Crank,
12a---Crankbin, 14m-Connecting rod body, 16---Connector bearing, 16A-
-----Upper metal, 18----One large end, 20-
1--small end, 22--1 oil supply hole, 24--oil inlet, 26--oil sump.

Claims (1)

【特許請求の範囲】[Claims] ピストンとクランクとを連接するコンロッド本体から成
り、前記コンロッド本体には大端部から小端部に延びる
給油孔を有するコンロッドを製造する方法において、前
記給油孔か前記大端部の内周の手前て終って下端か閉じ
るように前記コンロッド本体の小端部側から穿孔して前
記給油孔を形成し、また前記給油孔の閉じられた下端か
ら前記大端部を斜めに貫通して前記大端部のクランクピ
ンの軸線方向の端部に開口するようにして前記大端部の
縁側から穿孔して油入口を形成することを特徴とするコ
ンロッドの製造方法。
In a method for manufacturing a connecting rod comprising a connecting rod body that connects a piston and a crank, the connecting rod body having an oil supply hole extending from a large end to a small end, the oil supply hole is located in front of the inner periphery of the large end. The oil supply hole is formed by drilling a hole from the small end side of the connecting rod body so as to close the lower end of the connecting rod body, and the large end is formed by diagonally penetrating the large end from the closed lower end of the oil supply hole. 1. A method of manufacturing a connecting rod, comprising: forming an oil inlet by drilling a hole from the edge of the large end so as to open at the end in the axial direction of the crank pin.
JP18532090A 1990-07-16 1990-07-16 Manufacture of connecting rod Pending JPH0473417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18532090A JPH0473417A (en) 1990-07-16 1990-07-16 Manufacture of connecting rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18532090A JPH0473417A (en) 1990-07-16 1990-07-16 Manufacture of connecting rod

Publications (1)

Publication Number Publication Date
JPH0473417A true JPH0473417A (en) 1992-03-09

Family

ID=16168774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18532090A Pending JPH0473417A (en) 1990-07-16 1990-07-16 Manufacture of connecting rod

Country Status (1)

Country Link
JP (1) JPH0473417A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023062676A (en) * 2021-10-12 2023-05-08 エムエーエヌ・エナジー・ソリューションズ・フィリアル・アフ・エムエーエヌ・エナジー・ソリューションズ・エスイー・ティスクランド Large-sized two stroke uniflow scavenging turbocharged crosshead internal combustion engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6336610B2 (en) * 1984-05-17 1988-07-21 Hitachi Chemical Co Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6336610B2 (en) * 1984-05-17 1988-07-21 Hitachi Chemical Co Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023062676A (en) * 2021-10-12 2023-05-08 エムエーエヌ・エナジー・ソリューションズ・フィリアル・アフ・エムエーエヌ・エナジー・ソリューションズ・エスイー・ティスクランド Large-sized two stroke uniflow scavenging turbocharged crosshead internal combustion engine

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