JPS5844890B2 - Engine connecting rod semi-finished products - Google Patents
Engine connecting rod semi-finished productsInfo
- Publication number
- JPS5844890B2 JPS5844890B2 JP12039581A JP12039581A JPS5844890B2 JP S5844890 B2 JPS5844890 B2 JP S5844890B2 JP 12039581 A JP12039581 A JP 12039581A JP 12039581 A JP12039581 A JP 12039581A JP S5844890 B2 JPS5844890 B2 JP S5844890B2
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- bearing cap
- main body
- finished products
- notch
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/02—Constructions of connecting-rods with constant length
- F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
【発明の詳細な説明】 この発明はエンジンの連接棒に関するもので。[Detailed description of the invention] This invention relates to engine connecting rods.
特に、大端部を連接棒主体と軸受キャップとで形成する
連接棒の鋳造あるいは鍛造素材に関する。In particular, the present invention relates to a casting or forging material for a connecting rod whose large end is formed by a connecting rod main body and a bearing cap.
従来、エンジンの連接棒はクランク軸へ組み付けるため
にクランクピン軸、□通る平面で2分割し。Conventionally, in order to assemble the engine connecting rod to the crankshaft, it is divided into two along the plane that passes through the crankpin axis.
連接棒主体と軸受キャップとで構成することが行われて
いる。It is commonly used to consist of a connecting rod main body and a bearing cap.
そこで、それらを製作する場合、鋳造素材の構成につい
て2種の考え方がある。Therefore, when manufacturing them, there are two ways of thinking about the composition of the casting material.
その1は連接棒主体と軸受キャップとの素材をそれぞれ
別個に用意する方法であり、その2はそれらを一体的に
鋳造あるいは鋳造した後1機械加工によって切断するも
のである。The first method is to prepare the materials for the connecting rod main body and the bearing cap separately, and the second method is to cast or cast them as one piece and then cut them by machining.
然しなから前者は鋳造あるいは鋳造の工程が増し、コス
ト上昇を免れ得ないし、後者は比較的効率のよくないメ
タルソーあるいはフライスカッターによる切断を要する
ため、大量生産に適せず、同様にコスト上昇を免イ1得
ない。However, the former requires more casting or molding processes, which inevitably increases costs, and the latter requires relatively inefficient cutting with metal saws or milling cutters, making it unsuitable for mass production and similarly increasing costs. I don't get any exemption.
この発明はこのような不具合を除去することを目的とす
るものである。The present invention aims to eliminate such problems.
以下8図示の実施例によって本発明を説明する。The present invention will be explained below with reference to eight illustrated embodiments.
図面は本発明による連接棒の鉄あるいは軽合金からなる
鋳造された素材を示す。The drawing shows a cast stock of iron or light alloy of a connecting rod according to the invention.
この素材Aは連接棒の主体1と軸受キャップ2とからな
り、それらは細工時に削除される連結用の余肉3を介し
て連結されている。This material A consists of a main body 1 of a connecting rod and a bearing cap 2, which are connected via a connecting extra wall 3 that is removed during processing.
主体1は一端にピストンピン孔4を有する小端部Bと、
他端にクランクビン孔の一部をなす半円状のくほみ5と
を有し、軸受キャップ2はクランクビン孔の残部をなす
半円状のくぼみ2aを有している。The main body 1 has a small end B having a piston pin hole 4 at one end;
The other end has a semicircular recess 5 forming a part of the crankshaft hole, and the bearing cap 2 has a semicircular recess 2a forming the remainder of the crankshaft hole.
そして、それら主体1と軸受キャップ2とはそれらのく
ぼみ2aとくぼみ5とを向き合わせ、余肉3を介して連
結されている。The main body 1 and the bearing cap 2 are connected to each other via an extra wall 3 with their recesses 2a and 5 facing each other.
余肉3には連接棒の両端面からのびる切欠部3a、3a
が設けられ破断分離を容易にすべく脆弱化しである。The extra thickness 3 has notches 3a extending from both end surfaces of the connecting rod.
It is weakened to facilitate breaking and separation.
なお切欠部3aの底部は第4図で示すように三角形状に
くぼませてあり、その角度aは鋳型の製作上許される限
り、可及的に鋭くして切欠効果を強めることが好ましい
。The bottom of the notch 3a is recessed in a triangular shape as shown in FIG. 4, and it is preferable to make the angle a as sharp as possible to enhance the notch effect, as long as it is allowed in manufacturing the mold.
図中、二点鎖線で示した円6は主体1と軸受キャップ2
とを連結するためのボルト(図示してない)孔である。In the figure, the circle 6 indicated by the two-dot chain line represents the main body 1 and the bearing cap 2.
This is a bolt (not shown) hole for connecting the two.
以上のように形成される連接棒の生成品は、主体1と軸
受キャップ2とが、余肉3を介して一体的に連結されて
いるので、鋳造や鍛造に際して。In the connecting rod product formed as described above, the main body 1 and the bearing cap 2 are integrally connected via the extra wall 3, so that it is easy to cast or forge.
その素材を一時に製造することができる。The material can be manufactured all at once.
このとき余肉3の断面積は鋳造時における渦流れをよく
する上では大きいことが好ましいが、後述するように、
この部分は後工程で破断されるものであり。At this time, the cross-sectional area of the extra wall 3 is preferably large in order to improve the vortex flow during casting, but as will be described later,
This part will be broken in a later process.
鋳造上あるいは鍛造上許される限り小さいことが好まし
い。It is preferable that it be as small as possible for casting or forging.
このようにして形成された素材Aは機械ηロエに先立っ
て以下のようにして分離される。The material A thus formed is separated in the following manner prior to the machine ηloe.
すなわち。主体1の両端面を万力その他で挟持し、軸受
キャップ2を前記切欠部3a側から他側へ向けてハンマ
などで強打する。Namely. Both end surfaces of the main body 1 are held in a vise or the like, and the bearing cap 2 is hit with a hammer or the like from the notch 3a side to the other side.
すると、切欠き部3aのため余肉3に応力が集中し、余
肉3の部分で比較的容易に破断する。Then, stress is concentrated on the extra thickness 3 due to the notch 3a, and the extra thickness 3 is relatively easily broken.
しかる後、主体1と軸受キャップ2とには、従来と同様
に機械加工が施される。Thereafter, the main body 1 and the bearing cap 2 are machined in a conventional manner.
すなわち1両端面とピストンピン孔4およびクランクピ
ン孔とを粗仕上げし、ボルト孔6を穿設してボルト(図
示してない)により両者を連結する。That is, both end faces of the piston pin 1 and the piston pin hole 4 and the crank pin hole are roughly finished, a bolt hole 6 is drilled, and the two are connected with a bolt (not shown).
その後、各ピン孔を精密仕上げし、必要に応じて熱処理
や銅メッキなどが施される。After that, each pin hole is precisely finished, and heat treatment and copper plating are applied as necessary.
なお、この実施例では素材として鋳鉄が用いられ、鋳造
後直ちに破断し、その後歪取り焼鈍を行っているが、こ
れは他の材料1例えはアルミニ1クム合金など軽合金が
用いられることもある。In this example, cast iron is used as the material, which is broken immediately after casting and then subjected to strain relief annealing, but other materials, such as light alloys such as aluminum 1-cum alloy, may also be used. .
また、主体1と軸受キャップ2との破断分離は、ボルト
孔6の穿設後に行なってもよく、この場合は余肉3が一
層少なくなり破断が容易になる。Further, the main body 1 and the bearing cap 2 may be separated by breaking after the bolt holes 6 are drilled, and in this case, the excess thickness 3 is further reduced and the breaking becomes easier.
この発明の連陪棒半成品は1以上のように一端にクラン
クピンのピン孔の一部をなすくぼみを形成した連接棒の
主体と、クランクピンのピン孔の残部をなすくぼみを形
成した軸受キャップとを。The connecting rod semi-finished product of the present invention includes a connecting rod main body having a recess forming a part of the crank pin pin hole at one end, and a bearing cap having a recess forming the remainder of the crank pin pin hole, as described above. And.
連結用の余肉を介して連結すると共に、前記連結用の余
肉に切欠部を設けたものであるから、鋳造あるいは鍛造
に際して連接棒主体と軸受キャップとの素材が一時に形
成されるので素材工程が短縮される。Since the connecting rod body and the bearing cap are connected through the connecting extra wall and a notch is provided in the connecting extra wall, the connecting rod main body and the bearing cap are formed at the same time during casting or forging. The process is shortened.
また、それらの分離には、主体と軸受キャップとの一方
を固定し、他方を強打するという簡単な工程で足り、単
位時間当りのυロ工コストが高いフライス盤や鋸盤を用
いる必要がないので。In addition, to separate them, a simple process of fixing one of the main body and the bearing cap and pounding the other is sufficient, and there is no need to use a milling machine or saw that requires high machining costs per unit time. .
生産コストを著しく低減できる。Production costs can be significantly reduced.
ざらに余肉の部分には切欠部が設けられているので、余
肉の部分が脆弱化し、比較的弱い打撃によっても主体と
軸受キャップとを分離できる効果がある。Since the notch is provided roughly in the excess thickness, the excess thickness becomes brittle and has the effect of allowing the main body and the bearing cap to be separated even by a relatively weak blow.
なお、実施例では切欠部3aは連阪棒の両端面に設けて
あり、切欠部3aの深さを浅くしてその幅を狭くシ、余
肉を減らしているが1片側だけに設けてもよい。In the embodiment, the notches 3a are provided on both end surfaces of the continuous bar, and the depth of the notches 3a is made shallow to narrow the width and reduce the excess thickness, but it is also possible to provide them only on one side. good.
また、切欠部の底面は三角形状として切欠効果を強化し
ているがこれに限る必要がないのは勿論である。Furthermore, although the bottom surface of the notch is triangular to enhance the notch effect, it is needless to say that the shape is not limited to this.
図面は本発明の一実施例を示すもので、第1図は連阪棒
半成品の正面図、第2図はその縦断面図。
第3図はlI[−I断簡図、第4図は第2図中符号14
で示した要部の拡大図である。
A・・・・・・素材、1・・・・・・主体、2・・・・
・・軸受キャップ。
3・・・・・・余肉、3a・・・・・・切欠部。The drawings show one embodiment of the present invention, and FIG. 1 is a front view of a semi-finished continuous bar product, and FIG. 2 is a longitudinal sectional view thereof. Figure 3 is a simplified diagram of lI [-I, Figure 4 is a reference numeral 14 in Figure 2.
FIG. 2 is an enlarged view of the main parts shown in FIG. A...Material, 1...Subject, 2...
・・Bearing cap. 3...Excess meat, 3a...Notch.
Claims (1)
成した連接棒の主体と、クランクピンのビン孔の残部を
なすくぼみを形成した軸受キャップとを、連結用の余肉
を介して連結すると共に。 前記連結用の余肉に切欠部を設けてなるエンジンの連阪
棒半成品。[Scope of Claims] 1. A main body of a connecting rod having a recess forming a part of the crank pin hole at one end, and a bearing cap having a recess forming the remainder of the crank pin hole for connection. As well as being connected through extra meat. A semi-finished product of a continuous rod for an engine, in which a notch is provided in the excess thickness for connection.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12039581A JPS5844890B2 (en) | 1981-07-30 | 1981-07-30 | Engine connecting rod semi-finished products |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12039581A JPS5844890B2 (en) | 1981-07-30 | 1981-07-30 | Engine connecting rod semi-finished products |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5821017A JPS5821017A (en) | 1983-02-07 |
JPS5844890B2 true JPS5844890B2 (en) | 1983-10-06 |
Family
ID=14785142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12039581A Expired JPS5844890B2 (en) | 1981-07-30 | 1981-07-30 | Engine connecting rod semi-finished products |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5844890B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0696688A1 (en) | 1994-08-12 | 1996-02-14 | Honda Giken Kogyo Kabushiki Kaisha | Process for producing split type mechanical part |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4569109A (en) * | 1984-07-02 | 1986-02-11 | General Motors Corporation | Method of making a split bearing assembly |
AU2003252497A1 (en) * | 2002-07-11 | 2004-02-02 | Yamaha Hatsudoki Kabushiki Kaisha | Connecting rod split construction |
US7299716B2 (en) | 2002-12-26 | 2007-11-27 | Yamaha Hatsudoki Kabushiki Kaisha | Split type connecting rod |
US7418886B2 (en) | 2002-12-26 | 2008-09-02 | Yamaha Hatsudoki Kabushiki Kaisha | Split type connecting rod |
US7159559B2 (en) | 2003-12-02 | 2007-01-09 | Yamaha Hatsudoki Kabushiki Kaisha | Split connecting rod, engine and vehicle |
US10041765B2 (en) | 2016-01-28 | 2018-08-07 | Ryan McMakin | Creep preventing scope mount system |
JP6958340B2 (en) * | 2017-12-25 | 2021-11-02 | トヨタ自動車株式会社 | Manufacturing method of connecting rod and connecting rod |
-
1981
- 1981-07-30 JP JP12039581A patent/JPS5844890B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0696688A1 (en) | 1994-08-12 | 1996-02-14 | Honda Giken Kogyo Kabushiki Kaisha | Process for producing split type mechanical part |
Also Published As
Publication number | Publication date |
---|---|
JPS5821017A (en) | 1983-02-07 |
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