JPH0459147A - Method for forging connecting rod - Google Patents
Method for forging connecting rodInfo
- Publication number
- JPH0459147A JPH0459147A JP2168657A JP16865790A JPH0459147A JP H0459147 A JPH0459147 A JP H0459147A JP 2168657 A JP2168657 A JP 2168657A JP 16865790 A JP16865790 A JP 16865790A JP H0459147 A JPH0459147 A JP H0459147A
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- die
- billet
- forging
- shape
- 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
Links
- 238000005242 forging Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title description 3
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 239000012778 molding material Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000003860 storage Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 101100328887 Caenorhabditis elegans col-34 gene Proteins 0.000 description 4
- 235000013372 meat Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/142—Making profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/766—Connecting rods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、各種内燃機関着しくは電動ドライブ機構等に
採用されるコネクティングロッドの鍛造成形方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for forging connecting rods employed in various internal combustion engines, electric drive mechanisms, and the like.
（従来の技術）
上記コネクティングロッドを鍛造によって成形する場合
には、アルミニウム合金等から成る鍛造用ビレットを、
当該ロッドの形状を呈する型室が金型割面に対してそれ
ぞれ半割状に凹設された上下金型間にセントし、その上
下金型の接近離反によって前記ビレットを所定の形状、
即ち型室の形状通りに鍛造するのが一般的であり、この
際通常は、前記金型割面を接触させずに余肉を上下金型
の間隙にオーバーフローさせ、いわゆる張りを発生させ
ながら型鍛造に供されることとされている。(Prior art) When forming the above-mentioned connecting rod by forging, a forging billet made of aluminum alloy, etc.
A mold chamber having the shape of the rod is inserted between upper and lower molds, each of which is recessed in half with respect to the mold splitting surface, and the billet is shaped into a predetermined shape by moving the upper and lower molds toward and away from each other.
In other words, it is common to forge according to the shape of the mold chamber, and in this case, the excess metal is allowed to overflow into the gap between the upper and lower molds without bringing the mold part surfaces into contact with each other, and the mold is pressed while creating so-called tension. It is said to be used for forging.
ところで、前記鍛造用ビレットは、上下金型にセットす
る前の当初の形状としては、通常円柱形を呈しており、
断面円形の棒状材を所定長さに切断することにより得ら
れるものであった。By the way, the forging billet usually has a cylindrical shape in its initial shape before being set in the upper and lower molds.
It was obtained by cutting a rod-shaped material with a circular cross section into a predetermined length.
（発明が解決しようとする課題）
上記従来の技術においては、鍛造用ビレットの当初の形
状が円柱形であるため、鍛造成形品の材料歩留が非常に
悪いものとなっていた。(Problems to be Solved by the Invention) In the above-mentioned conventional technology, since the initial shape of the forging billet is cylindrical, the material yield of the forged product is extremely poor.
即ち、鍛造成形すべきコネクティングロッドは、周知の
通り大端部、小端部およびそれらを連接する連接部とか
ら成る部材であり、その連接部は、■聖断面形状を呈し
て他の部分よりも細くなっているにも拘らず、ビレット
の形状は断面が−様な円柱形であったため、特にその連
接部において幅方向に広がる張りの発生量が多くなって
おり、このことが、材料歩留の悪化を招く主原因となっ
ていた。That is, as is well known, the connecting rod to be forged is a member consisting of a large end, a small end, and a connecting part that connects them. Despite the fact that the billet is thinner, the shape of the billet is a cylinder with a -like cross section, so there is a large amount of tension spreading in the width direction, especially at the joints, and this causes a reduction in material yield. This was the main cause of worsening retention.
本発明は、このような実情に鑑みて成されたものであり
、連接部における張りの発生量を極力おさえることによ
り、材料歩留の向上を図ることができるコネクティング
ロッドの鍛造成形方法を提供することを目的とする。The present invention has been made in view of these circumstances, and provides a forging method for a connecting rod that can improve the material yield by minimizing the amount of tension generated in the connecting portions. The purpose is to
（課題を解決するための手段）
上記目的を達成すべく、本発明が講じた技術的手段は、
コネクティングロッド１５の外形形状と近似する形状の
ダイ孔１４を有するダイアを介して押出成形材料１６を
異形押出することにより棒状材１７を形成し、該棒状材
１７を所定間隔おきに切断して鍛造用ビレット１８とし
、該ビレット１８を前記コネクティングロッド１５の型
室２１が割面２２に対してそれぞれ半割状に凹設された
上下金型１９．２０間にセットした後、該金型１９，２
０の接近離反によって前記ビレット１８を型室２１の形
状通りに型鍛造する点にある。(Means for solving the problem) The technical means taken by the present invention to achieve the above object are as follows:
A rod-shaped material 17 is formed by extruding the extrusion molding material 16 into a profile through a die having a die hole 14 having a shape similar to the external shape of the connecting rod 15, and the rod-shaped material 17 is cut at predetermined intervals and forged. After setting the billet 18 between the upper and lower molds 19 and 20 in which the mold chamber 21 of the connecting rod 15 is recessed in half with respect to the split surface 22, the mold 19, 2
The point is that the billet 18 is die-forged into the shape of the mold chamber 21 by zero approach and separation.
（作 用）
本発明においては、第１図に示す如く、コネクティング
ロッド１５の外形形状と近似するダイ孔１４を有するダ
イアを介して押出成形材料１６を異形押出することによ
り、略第３図に示す形状を呈する棒状材１７を形成する
。(Function) In the present invention, as shown in FIG. 1, the extrusion molding material 16 is extruded into a profile through a die having a die hole 14 that approximates the external shape of the connecting rod 15, thereby forming a shape approximately similar to that shown in FIG. A rod-shaped material 17 having the shape shown is formed.
そして、この棒状材１７は所定間隔おきに切断されてそ
のそれぞれが鍛造用ビレット１８とされる。Then, this rod-shaped material 17 is cut at predetermined intervals, and each cut is made into a billet 18 for forging.
このビレッ目８は、第５図に示す如く、金型１９２０に
セットする際にコネクティングロッド１５の型室２１の
外形形状に略沿うこととなり、従来のように当該コネク
ティングロッド１５の連接部１５ｃ幅方向に、張り２７
が大きく広がることがない。As shown in FIG. 5, this billet 8 approximately follows the external shape of the mold chamber 21 of the connecting rod 15 when it is set in the mold 1920, and the width of the connecting portion 15c of the connecting rod 15 is direction, tension 27
does not spread widely.
（実施例）
以下、図面に基づいて本発明の一実施例につき説明する
。(Example) Hereinafter, one example of the present invention will be described based on the drawings.
第４図は、本実施例で採用する押出プレス機の概要を示
す平面断面図である。FIG. 4 is a plan sectional view showing an outline of the extrusion press employed in this example.
同図において、１はコンテナであり、該コンテナｌは、
軸心方向に連通ずるビレット収容孔２を有し、図外のコ
ンテナホルダによって支持されている。In the figure, 1 is a container, and the container 1 is
It has a billet receiving hole 2 communicating in the axial direction, and is supported by a container holder (not shown).
３は押出シリンダであり、前記コンテナ２の後側に同軸
心状に配置され、内部には前方向に出退自在とされたラ
ム４を有する。Reference numeral 3 denotes an extrusion cylinder, which is disposed coaxially on the rear side of the container 2, and has a ram 4 inside thereof that can freely move forward and backward.
尚、５は押盤であり、ラム４の先端に着脱自在に取付け
られている。Note that 5 is a press plate, which is detachably attached to the tip of the ram 4.
前記ビレット収容孔２の前方には、ダイホルダ６を介し
てダイアが嵌め込まれており、ダイホルダ６の前方はプ
レスフレーム８によって支持されて前記ラム４からの押
出力の反力を発生させるようになっている。A diamond is fitted into the front of the billet accommodation hole 2 via a die holder 6, and the front of the die holder 6 is supported by a press frame 8 to generate a reaction force of the extrusion force from the ram 4. ing.
前記プレスフレーム８の更に前方には、上面に多数のロ
ーラを具備するラインアウトテーブル９が配備されてお
り、該テーブル９の側方には、レール１０上を前後に走
行自在とされた引出装置１１及び冷却ステージ１２が配
備されている。また、引出装置１１の側面からは、チャ
ック手段１３が突出されており、押出後の成形材料の前
端が挟持されるようになっている。Further forward of the press frame 8, a line-out table 9 equipped with a large number of rollers on its upper surface is provided, and on the side of the table 9 is a pull-out device that is movable back and forth on rails 10. 11 and a cooling stage 12 are provided. Further, a chuck means 13 is protruded from the side surface of the drawing device 11, and is adapted to clamp the front end of the molding material after extrusion.
そして、本実施例では、前記ダイアの中央に開設される
ダイ孔１４は、第１図及び第２図に示す如く、鍛造成形
すべきコネクティングロッド１５の外形形状と近似する
形状とされている。In this embodiment, the die hole 14 opened at the center of the die has a shape similar to the external shape of the connecting rod 15 to be forged, as shown in FIGS. 1 and 2.
従って、ビレット収容孔２に挿入された押出成形材料１
６は、押盤５を介してラム４によって押出され、前記ダ
イ孔１４を通過して押出成形されるが、このとき、ライ
ンアウトテーブル９上に排出される押出後の棒状材１７
は、第３図に示す如く、コネクティングロッドの外形形
状に近似する断面形状を呈することとなる。Therefore, the extruded material 1 inserted into the billet receiving hole 2
6 is extruded by the ram 4 via the press plate 5, passes through the die hole 14, and is extruded. At this time, the bar-shaped material 17 after extrusion is discharged onto the line-out table 9.
As shown in FIG. 3, the connecting rod has a cross-sectional shape that approximates the external shape of the connecting rod.
このようにして成形された前記棒状材１７は、前記冷却
ステージ１２上で冷却され、該ステージ１２上に装備し
た図外の切削手段により所定間隔おきに切断され、第３
図に示す如く、それぞれがコネクティングロッド１５の
外形形状と近似する断面形状を有する鍛造用ビレット１
８が得られる。The rod-shaped material 17 formed in this manner is cooled on the cooling stage 12, and cut at predetermined intervals by a cutting means (not shown) provided on the stage 12.
As shown in the figure, forging billets 1 each have a cross-sectional shape similar to the external shape of the connecting rod 15.
8 is obtained.
次に、上記鍛造用ビレット１８を鍛造するための上下金
型１９．２０について説明する。Next, the upper and lower molds 19 and 20 for forging the forging billet 18 will be explained.
第５図乃至第７図において、２１は型室であり、上下金
型１９．２０の割面２２に対して半割状に凹設されて形
成されており、コネクティングロッド１５の大端部１５
ａ、小端部１５ｂ、及びそれらを連接する連接部１５ｃ
をそれぞれ成形すべく、大端部用型室２１ａ、小端部用
型室２１ｂ及び連接部用型室２１ｃとが連通状に構成さ
れてなる。In FIGS. 5 to 7, 21 is a mold chamber, which is recessed in half with respect to the split surface 22 of the upper and lower molds 19 and 20, and is located at the large end 15 of the connecting rod 15.
a, the small end portion 15b, and the connecting portion 15c connecting them
The mold chamber 21a for the large end portion, the mold chamber 21b for the small end portion, and the mold chamber 21c for the connecting portion are configured to communicate with each other in order to mold each of them.
本実施例では、第５図及び第６図に示す如く、前記連接
部用型室２１ｃの平面視左右両側に、かつ、その型室２
１ｃの外形形状に沿うように、長溝状の余肉収容室２３
．２３が形成されており、型室２１ｃからその収容室２
３に至る部分は、上下金型１９．２０が互いに近づく方
向に膨出状に形成されて絞り部２４２４が設けられてい
る。In this embodiment, as shown in FIG. 5 and FIG.
A long groove-shaped excess meat storage chamber 23 is formed along the external shape of 1c.
．． 23 is formed, and the storage chamber 2 is transferred from the mold chamber 21c.
3 is formed in a bulge shape in the direction in which the upper and lower molds 19 and 20 approach each other, and is provided with a converging portion 2424.
この余肉収容室２３は、いわゆる張りを自由に発生させ
るためのものではなく、第６図に示すように、その断面
積が連接部用型室２１ｃの断面積に比べて非常に小さく
、しかも当該収容室２３の更に側方に設けた突条ダム部
２５によって、連接部用型室２１ｃから側方にオーバー
フローした余肉が収容室２３に強制的に充満されるよう
になっている。This excess material storage chamber 23 is not intended to freely generate tension, and as shown in FIG. The ridge dam portion 25 provided further to the side of the storage chamber 23 allows the storage chamber 23 to be forcibly filled with excess meat that overflowed laterally from the connecting portion mold chamber 21c.
即ち、前記突条ダム部２５は、平面視において前記余肉
収容室２３の外側のすく隣りにかつ謹呈２３に沿って形
成され、その端面ば、それぞれ上下金型１９．２０が最
接近したときにそれらが接触するキッシング面２６（第
５図におけるハツチング部分）とされている。That is, the protruding dam portion 25 is formed adjacent to the outside of the surplus metal storage chamber 23 and along the recess 23 in a plan view, and its end surface is formed when the upper and lower molds 19 and 20 are brought closest to each other. A kissing surface 26 (hatched portion in FIG. 5) is the contact area between the two.
また、本実施例では、前記大端部用型室２１ａ及び小端
部用型室２１ｂの外周部には、突条ダム部２５が設けら
れておらず、上下金型１９．２０における前記キッシン
グ面２６以外の部分では、最接近時においても間隙ｅが
保たれて接触しないようになっており、第７図に示す如
く、前記大端部用型室２１ａ及び小端部用型室２１ｂの
周囲では、いわゆる開放鍛造に供されるようになってい
る。Further, in this embodiment, the protruding dam part 25 is not provided on the outer periphery of the large end mold chamber 21a and the small end mold chamber 21b, and the kissing in the upper and lower molds 19.20 In the parts other than the surface 26, a gap e is maintained so that they do not come into contact even when they are closest to each other, and as shown in FIG. 7, the large end mold chamber 21a and the small end mold chamber 21b are separated. The surrounding area is used for so-called open forging.
そして、本実施例では、前記押出プレス機によって得ら
れた鍛造用ビレット１８を、第５図に示すように、型室
２１の平面形状にあわせて上下金型１９゜２０間にセッ
トし、該金型１９．２０の接近離反によって当該ビレッ
目８を型室２１の形状通りに型鍛造する。In this embodiment, the forging billet 18 obtained by the extrusion press machine is set between upper and lower molds 19° and 20° according to the planar shape of the mold chamber 21, as shown in FIG. The billets 8 are die-forged into the shape of the mold chamber 21 by moving the molds 19 and 20 closer and further apart.
この場合、その鍛造後のコネクティングロッド１５は、
第８図に示すように、従来その連接部１５ｃの周囲に大
きく広がっていた張り２７の代わりに、前記余肉収容室
２３によって形成される棒状部分２８が当該連接部１５
ｃの左右両側に形成されることになる。In this case, the connecting rod 15 after forging is
As shown in FIG. 8, instead of the tension 27 that has conventionally spread widely around the connecting portion 15c, a rod-shaped portion 28 formed by the excess meat storage chamber 23 is attached to the connecting portion 15c.
It will be formed on both the left and right sides of c.
即ち、本実施例によれば、鍛造用ビレット１８があらか
じめ成形すべくコネクティングロッド１５の外形形状に
近似して形成されているので、従来のように連接部１５
ｃにおける幅方向の張り２７の発生量が少なくなると共
に、前記突条ダム部２５がキッシング面２６を構成して
いることから、余肉収容室２３、２３の左右両側方へ張
り２７（余肉）が広がることがないので、コネクティン
グロッド１５全体としての張り２７の形成量が著しく低
減され、材料歩留りの大幅な向上、ひいてはビレットの
加熱エネルギーの削減が実現されることとなる。That is, according to this embodiment, since the forging billet 18 is formed to approximate the external shape of the connecting rod 15 in order to be formed in advance, the connecting portion 15 is
The amount of tension 27 generated in the width direction at c is reduced, and since the protrusion dam portion 25 constitutes the kissing surface 26, the tension 27 (excess ) does not widen, the amount of tension 27 formed in the connecting rod 15 as a whole is significantly reduced, resulting in a significant improvement in material yield and a reduction in billet heating energy.
また、本実施例によれば、連接部用型室１５ｃから側方
に広がろうとする余肉は、突条ダム部２３によってその
フローが規制され、連接部１５ｃにおける幅方向のメタ
ルフローが生じることがなく、概してその長手方向にメ
タルフローがそろうこととなるので、コネクティングロ
ッド１５０強度向上を図ることができる。Further, according to this embodiment, the flow of excess metal that tries to spread laterally from the joint mold chamber 15c is regulated by the protruding dam part 23, and metal flow in the width direction in the joint part 15c occurs. Since the metal flow is generally aligned in the longitudinal direction of the connecting rod 150, the strength of the connecting rod 150 can be improved.
以上、本発明の一実施例につき説明したが、本発明はこ
れに限られるものではない。Although one embodiment of the present invention has been described above, the present invention is not limited to this.
例えば、前記上下金型１９．２０は、余肉収容室２３゜
２３及び突条ダム部２５．２５の設けられていないもの
でもよく、当該鍛造用ビレット１日を従来の開放鍛造若
しくは半密閉鍛造によって成形してもよい。For example, the upper and lower molds 19.20 may be those without the excess metal storage chamber 23.23 and the protrusion dam portion 25.25, and the forging billet can be used for conventional open forging or semi-closed forging. It may be molded by
この場合においては、連接部１５ｃの幅方向にもある程
度の張りが発生するが、鍛造用ビレット１８が型室２１
の平面形状に近似する形状となっているので、その発生
量は従来よりも少量であることば勿論である。In this case, a certain amount of tension occurs in the width direction of the connecting portion 15c, but the forging billet 18
Since the shape is similar to the planar shape of , it goes without saying that the amount generated is smaller than in the past.
また、第９図に示す如く、前記ダイアにコネクティング
ロッド１５の外形形状に近似するダイ孔１４を２つ設け
ることにしてもよく、この場合には、棒状材１７が一度
の押出しで２本得られることとなる。Further, as shown in FIG. 9, two die holes 14 having an external shape similar to the connecting rod 15 may be provided in the die, and in this case, two rod-shaped materials 17 can be obtained by one extrusion. It will be.
（発明の効果）
以上説明したように、本発明によれば、コネクティング
ロッド１５の外形形状に近似する形状のダイ孔１４を有
するダイアを介して押出成形材料１６を異形押出するこ
とにより棒状材１７を形成し、該棒状材１７を所定間隔
おきに切断して鍛造用ビレット１８として採用して上下
金型１９．２０間にセ・ントし、型鍛造に供することと
しているので、コネクティングロッド１５の連接部１５
ｃ幅方向に広がる張り２７０発生を極力少量におさえる
ことができ、材料歩留の向上、ひいては材料の加熱エネ
ルギーの低減を図ることができる。(Effects of the Invention) As described above, according to the present invention, the rod-shaped material 17 is extruded into a profile by extruding the extrusion molding material 16 through a die having a die hole 14 having a shape similar to the external shape of the connecting rod 15. The rod-shaped material 17 is cut at predetermined intervals, used as a forging billet 18, and placed between upper and lower molds 19 and 20 for die forging. Connecting part 15
c The generation of tension 270 that spreads in the width direction can be suppressed to a minimum amount, thereby improving the material yield and further reducing the heating energy of the material.
第１図乃至第８図は本発明の一実施例を示し、第１図は
ダイの平面図、第２図は第１図■−■線断面図、第３図
は棒状材及び鍛造用ビレットの斜視図、第４図は押出プ
レス機の概略説明図、第５図は金型の平面図、第６図は
第５図■−■線断面図、第７図は第５図■−■線断面図
、第８図は鍛造成形後のコネクティングロッドの斜視図
、第９図はダイの変形例を示す平面図である。Figures 1 to 8 show one embodiment of the present invention, Figure 1 is a plan view of the die, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, and Figure 3 is a bar material and a billet for forging. , FIG. 4 is a schematic explanatory diagram of the extrusion press, FIG. 5 is a plan view of the mold, FIG. 6 is a sectional view along the line 5 - ■, and FIG. 7 is a diagram 5 - A line sectional view, FIG. 8 is a perspective view of the connecting rod after forging, and FIG. 9 is a plan view showing a modification of the die.
７−ダイ、１４− ダイ孔、１５− コネクティングロ
ッド、１６−押出成形材料、１７−棒状材、１８−鍛造
用ビレット、１９−上金型、２０−下金型、２１−型室
、２２−割面。7-Die, 14-Die hole, 15-Connecting rod, 16-Extrusion molding material, 17-Bar material, 18-Forging billet, 19-Upper mold, 20-Lower mold, 21-Mold chamber, 22- Cut surface.
特許出願人 株式会社 り ボ タPatent applicant: Ribota Co., Ltd.
第５ 図 第 図 第 図 ２１ａ（２１） 第 図 Fifth figure No. figure No. figure 21a (21) No. figure
Claims (1)
する形状のダイ孔（１４）を有するダイ（７）を介して
押出成形材料（１６）を異形押出することにより棒状材
（１７）を形成し、該棒状材（１７）を所定間隔おきに
切断して鍛造用ビレット（１８）とし、該ビレット（１
８）を前記コネクティングロッド（１５）の型室（２１
）が割面（２２）に対してそれぞれ半割状に凹設された
上下金型（１９）（２０）間にセットした後、該金型（
１９）（２０）の接近離反によって前記ビレット（１８
）を型室（２１）の形状通りに型鍛造することを特徴と
するコネクティングロッドの鍛造成形方法。(1) A rod-shaped material (17) is formed by extruding an extrusion molding material (16) into a profile through a die (7) having a die hole (14) with a shape similar to the external shape of the connecting rod (15). , the bar material (17) is cut at predetermined intervals to form a forging billet (18), and the billet (1
8) into the mold chamber (21) of the connecting rod (15).
) is set between the upper and lower molds (19) and (20), each of which is recessed in half with respect to the split surface (22), and then the molds (
19) By approaching and separating from (20), the billet (18)
) is forged according to the shape of a mold chamber (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168657A JPH0459147A (en) | 1990-06-27 | 1990-06-27 | Method for forging connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168657A JPH0459147A (en) | 1990-06-27 | 1990-06-27 | Method for forging connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0459147A true JPH0459147A (en) | 1992-02-26 |
Family
ID=15872087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2168657A Pending JPH0459147A (en) | 1990-06-27 | 1990-06-27 | Method for forging connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0459147A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5398411A (en) * | 1991-12-10 | 1995-03-21 | Honda Giken Kogyo Kabushiki Kaisha | Process for producing suspension member for vehicle |
| US5490408A (en) * | 1993-12-27 | 1996-02-13 | Honda Giken Kogyo Kabushiki Kaisha | Method of and apparatus for extruding a billet of a light metal alloy |
| KR100342412B1 (en) * | 2000-04-26 | 2002-07-04 | 조시남 | production method for connecting rod |
| JP2003028920A (en) * | 2001-07-13 | 2003-01-29 | Advantest Corp | Electronic component contactor |
| EP1348501A1 (en) * | 2002-03-29 | 2003-10-01 | Peugeot Citroen Automobiles SA | Method for the manufacture of a forged connecting rod and tool for carrying out the method |
| US6712410B2 (en) | 2001-08-21 | 2004-03-30 | Ford Global Technologies, Llc | Extruded aluminum bumper |
| KR20040044057A (en) * | 2002-11-21 | 2004-05-27 | 현진소재주식회사 | Method for manufacturing the connecting rod for ship use |
| JP2009174709A (en) * | 2007-12-25 | 2009-08-06 | Yamaha Motor Co Ltd | Fracture split-type connecting rod, internal combustion engine, transportation apparatus, and production method for fracture split-type connecting rod |
| CN102338151A (en) * | 2010-07-19 | 2012-02-01 | 江海青 | Novel method for manufacturing aluminium connecting rod |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63168248A (en) * | 1986-12-27 | 1988-07-12 | Nippon Light Metal Co Ltd | Manufacture of forged product |
| JPH0275435A (en) * | 1988-09-08 | 1990-03-15 | Mazda Motor Corp | Manufacture of connecting rod |
-
1990
- 1990-06-27 JP JP2168657A patent/JPH0459147A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63168248A (en) * | 1986-12-27 | 1988-07-12 | Nippon Light Metal Co Ltd | Manufacture of forged product |
| JPH0275435A (en) * | 1988-09-08 | 1990-03-15 | Mazda Motor Corp | Manufacture of connecting rod |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5398411A (en) * | 1991-12-10 | 1995-03-21 | Honda Giken Kogyo Kabushiki Kaisha | Process for producing suspension member for vehicle |
| US5490408A (en) * | 1993-12-27 | 1996-02-13 | Honda Giken Kogyo Kabushiki Kaisha | Method of and apparatus for extruding a billet of a light metal alloy |
| KR100342412B1 (en) * | 2000-04-26 | 2002-07-04 | 조시남 | production method for connecting rod |
| JP2003028920A (en) * | 2001-07-13 | 2003-01-29 | Advantest Corp | Electronic component contactor |
| US6712410B2 (en) | 2001-08-21 | 2004-03-30 | Ford Global Technologies, Llc | Extruded aluminum bumper |
| EP1348501A1 (en) * | 2002-03-29 | 2003-10-01 | Peugeot Citroen Automobiles SA | Method for the manufacture of a forged connecting rod and tool for carrying out the method |
| FR2837731A1 (en) * | 2002-03-29 | 2003-10-03 | Peugeot Citroen Automobiles Sa | METHOD FOR MANUFACTURING A FORGED CONNECTING ROD AND TOOLS FOR IMPLEMENTING THIS METHOD |
| KR20040044057A (en) * | 2002-11-21 | 2004-05-27 | 현진소재주식회사 | Method for manufacturing the connecting rod for ship use |
| JP2009174709A (en) * | 2007-12-25 | 2009-08-06 | Yamaha Motor Co Ltd | Fracture split-type connecting rod, internal combustion engine, transportation apparatus, and production method for fracture split-type connecting rod |
| CN102338151A (en) * | 2010-07-19 | 2012-02-01 | 江海青 | Novel method for manufacturing aluminium connecting rod |
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