JPH0263635A - Manufacture of flange member - Google Patents

Manufacture of flange member

Info

Publication number
JPH0263635A
JPH0263635A JP21589788A JP21589788A JPH0263635A JP H0263635 A JPH0263635 A JP H0263635A JP 21589788 A JP21589788 A JP 21589788A JP 21589788 A JP21589788 A JP 21589788A JP H0263635 A JPH0263635 A JP H0263635A
Authority
JP
Japan
Prior art keywords
hole
flange
flange portion
manufacturing
flange member
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
JP21589788A
Other languages
Japanese (ja)
Inventor
Takashi Nakano
隆志 中野
Takaaki Imura
隆昭 井村
Seiji Sugimoto
杉本 清司
Jinichi Aida
会田 仁一
Susumu Aoyama
進 青山
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.)
M H CENTER KK
Aida Engineering Ltd
MH Center Ltd
Original Assignee
M H CENTER KK
Aida Engineering Ltd
MH Center 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 M H CENTER KK, Aida Engineering Ltd, MH Center Ltd filed Critical M H CENTER KK
Priority to JP21589788A priority Critical patent/JPH0263635A/en
Publication of JPH0263635A publication Critical patent/JPH0263635A/en
Pending legal-status Critical Current

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  • Forging (AREA)

Abstract

PURPOSE:To improve the dimension accuracy of a flange member by preparing a stock having a through-hole being smaller than a product and a collar part whose width in the axial direction is large, and executing expanding of the through-hole and shearing upset forming of the collar part, by working of one process. CONSTITUTION:A stock 14 which has a through-hole 15 being smaller than a product flange member, and also, in which a collar part 16 whose width in the axial direction is large is formed is prepared. Subsequently, the stock 14 is set to a die 19, and also, forming of one process is executed through a punch 18 and a mandrel 20. First of all, expanding of the through-hole 15 is executed by a tapered part (g) of the mandrel 20, and subsequently, the collar part 16 is brought to shearing upset forming toward the axial direction, and a flange part 17 is formed. At the time of expanding, working is executed in a state that the inner wall of the stock 14 and the mandrel 20 are adhering tightly to each other, and at the time of forming the collar part 16, the flange part is formed by volume of the collar part 16. In such a manner, the dimension accuracy of the flange member such as the through-hole, a flange part 17, etc., is improved.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、フランジ部材の製造方法に係わり、特に、部
材本体の中心軸に沿って貫通孔を形成するとともに、部
材本体の外周に、この部材本体の一端面から所定距離を
置いてフランジ部を形成してなるフランジ部材の製造方
法に関する。
Detailed Description of the Invention [Industrial Application Field] The present invention relates to a method for manufacturing a flange member, and in particular, a through hole is formed along the central axis of the member body, and a through hole is formed on the outer periphery of the member body. The present invention relates to a method of manufacturing a flange member in which a flange portion is formed at a predetermined distance from one end surface of a member body.

〔従来の技術〕[Conventional technology]

第7図は、内燃機関において燃料の噴射に使用されるフ
ューエルインジェクタコアを示すもので、このフューエ
ルインジェクタコアは、コア本体1の中心軸に沿って、
燃料通路である細径の貫通孔2が形成され、また、コア
本体1の外周には、フランジ部3が形成されている。そ
して、貫通孔2は、小径部4と大径部5とからなり、コ
ア本体1の中間部には、環状凹溝6が形成されている。
FIG. 7 shows a fuel injector core used for fuel injection in an internal combustion engine.
A small diameter through hole 2 serving as a fuel passage is formed, and a flange portion 3 is formed on the outer periphery of the core body 1. The through hole 2 consists of a small diameter part 4 and a large diameter part 5, and an annular groove 6 is formed in the middle part of the core body 1.

従来、このようなフューエルインジェクタコアは、コア
本体1およびフランジ部3を冷間鍛造により形成した後
、コア本体1の中心の貫通孔2フランジ部3の外周およ
び環状凹溝6を切削加工することにより製造されている
Conventionally, such a fuel injector core is manufactured by forming the core body 1 and the flange portion 3 by cold forging, and then cutting the through hole 2 at the center of the core body 1, the outer periphery of the flange portion 3, and the annular groove 6. Manufactured by.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかしながら、このような従来の製造方法では、コア本
体1の中心の貫通孔2をドリルとり−マで加工する必要
があるため、生産効率が悪く、コストが増大するという
問題がある。
However, in such a conventional manufacturing method, it is necessary to process the through hole 2 at the center of the core body 1 with a drill macer, so there are problems in that production efficiency is poor and costs increase.

そこで、フューエルインジェクタコアをプレス加工のみ
により製造することが考えられるが、この場合には、フ
ランジ部3の成形時に、貫通孔4にひげが発生し、細径
の貫通孔4の寸法精度が極端に低下するという問題があ
る。
Therefore, it is conceivable to manufacture the fuel injector core only by press working, but in this case, whiskers occur in the through hole 4 when forming the flange portion 3, and the dimensional accuracy of the small diameter through hole 4 becomes extremely difficult. There is a problem that the value decreases.

すなわち、例えば、第8図に示すように、中心軸に沿っ
て貫通孔7が形成され、外周にフランジ部3の軸方向幅
より大きい軸方向幅を有する鍔部8を形成した素材9の
鍔部8を、第9図に示すようにしてアプセット成形しフ
ランジ部3を形成することが考えられるが、この場合に
は、アプセット成形時に鰐部8下面から素材上面までの
寸法h1が小さくなるため、素材のフランジ部3外径方
向への塑性流動により、素材の鍔部8とその内周部のボ
リュームが外方に移動し、フランジ部3の成形位置にひ
け10が生じるという問題がある。
That is, for example, as shown in FIG. 8, a flange of a material 9 is provided with a through hole 7 formed along the central axis and a flange part 8 having an axial width larger than the axial width of the flange part 3 on the outer periphery. It is conceivable to form the flange part 3 by upsetting the part 8 as shown in FIG. 9, but in this case, the dimension h1 from the lower surface of the crocodile part 8 to the upper surface of the material becomes smaller during upsetting molding. Due to the plastic flow of the raw material in the outer diameter direction of the flange portion 3, the volume of the flange portion 8 of the raw material and its inner peripheral portion moves outward, causing a problem that a sink mark 10 is generated at the molding position of the flange portion 3.

なお、第9図において符号11はパンチを、符号12は
ダイスを、符号13はマンドレルを示している。
In FIG. 9, reference numeral 11 indicates a punch, reference numeral 12 indicates a die, and reference numeral 13 indicates a mandrel.

本発明は、上記のような問題を解決したもので、素材の
中心に形成される貫通孔にひげを生しさせることなく、
フランジ部を形成することのできるフランジ部材の製造
方法を提供することを目的とする。
The present invention solves the above-mentioned problems, and eliminates the formation of hairs in the through-hole formed in the center of the material.
It is an object of the present invention to provide a method for manufacturing a flange member that can form a flange portion.

〔課題を解決するための手段〕  。[Means for solving problems].

本発明にかかわるフランジ部材の製造方法は、部材本体
の中心軸に沿って貫通孔を有し、かつ、部材本体の外周
に、この部材本体の一端面から所定距離を置いてフラン
ジ部を有するフランジ部材の製造方法において、素材の
中心軸に沿って前記貫通孔より小さい貫通孔を形成する
とともに、外周に、前記フランジ部の軸方向幅より大き
い軸方向幅を有する鍔部を形成された素材を用いて、行
程加工により、先ず、前記素材の貫通孔を拡管すること
により前記フランジ部の貫通孔を成形し、続いて、前記
鍔部を軸方向に向けて剪断アプセット成形しながら前記
鰐部の体積により前記鍔部の軸方向幅より小さくて外径
の大きい前記フランジ部を形成するものである。
The method for manufacturing a flange member according to the present invention provides a flange member having a through hole along the central axis of the member body and a flange portion on the outer periphery of the member body at a predetermined distance from one end surface of the member body. In the method for manufacturing a member, a through hole smaller than the through hole is formed along the central axis of the material, and a flange portion having an axial width larger than the axial width of the flange portion is formed on the outer periphery of the material. First, the through-hole of the flange part is formed by expanding the through-hole of the material, and then the volume of the alligator part is formed by shear upsetting the collar part in the axial direction. This forms the flange portion which is smaller in axial width and has a larger outer diameter than the axial width of the flange portion.

〔作 用〕[For production]

本発明のフランジ部材の製造方法では、素材の中心軸に
沿ってフランジ部材の貫通孔より小さい貫通孔が形成さ
れるとともに、この外周に、フランジ部の軸方向幅より
大きい軸方向幅を有する鍔部が形成された素材を用いて
、一行程加工により貫通孔が拡管され、鍔部が素材の軸
方向に向けて剪断アプセット成形されフランジ部が形成
される。
In the method for manufacturing a flange member of the present invention, a through hole smaller than the through hole of the flange member is formed along the central axis of the material, and a flange having an axial width larger than the axial width of the flange portion is provided on the outer periphery of the through hole. The through hole is expanded by one-stroke processing using the material with the section formed thereon, and the flange section is sheared upset in the axial direction of the material to form the flange section.

〔実施例〕〔Example〕

以下、本発明方法の詳細を図面を用いて説明す本発明の
フランジ部材の製造方法では、先ず、第1図に示すよう
に、素材14の中心軸に沿って貫通孔15が形成される
とともに、この素材14の外周に、形成すべきフランジ
部の軸方向幅より大きい軸方向幅を有する鍔部16が予
め形成される。ここで、鍔部16は、断面a、b、c、
dにより中心軸回りに形成されるリング状の部分を示す
In the method for manufacturing a flange member of the present invention, which will be described in detail below with reference to the drawings, first, as shown in FIG. A flange portion 16 having an axial width larger than the axial width of the flange portion to be formed is formed in advance on the outer periphery of this material 14. Here, the flange portion 16 has cross sections a, b, c,
d indicates a ring-shaped portion formed around the central axis.

そして、この素材を用いて、第2図に示すように、−行
程内で貫通孔15を拡管し、続いて鍔部16が素材14
の軸方向に向けて剪断アプセット成形されフランジ部1
7が形成される。
Then, using this material, as shown in FIG.
The flange part 1 is shear upset-formed in the axial direction of the
7 is formed.

なお、第2図において、符号18はパンチを、符号19
はダイスを、符号20はマンドレルを示しており、図の
左側は、貫通孔の拡管が完了してフランジ部17の成形
前の加工途中状態を、図の右側は、フランジ部17の成
形後の状態を示している。
In FIG. 2, reference numeral 18 indicates a punch, and reference numeral 19 indicates a punch.
indicates a die, and reference numeral 20 indicates a mandrel. The left side of the figure shows the state in progress before the expansion of the through hole is completed and the flange part 17 is formed, and the right side of the figure shows the state after the flange part 17 has been formed. Indicates the condition.

すなわち、本発明のフランジ部材の製造方法では、第2
図に示したように、貫通孔の拡管は、マンドレル20の
テーパ部gにて行ない、パンチ18には、素材14の一
端面から鍔部16の端面までの距離りに、剪断アプセッ
ト成形時にパンチ18が移動する距離lを加えた長さの
成形部21が形成されており、剪断アプセット成形の終
了直前において、成形部21の段部22が素材14の端
面に当接される。
That is, in the method for manufacturing a flange member of the present invention, the second
As shown in the figure, the through hole is expanded at the tapered part g of the mandrel 20, and the punch 18 is provided with a punch at the distance from one end surface of the material 14 to the end surface of the flange 16 during shear upset forming. A molded part 21 having a length equal to the distance l traveled by the molded part 18 is formed, and the stepped part 22 of the molded part 21 comes into contact with the end surface of the material 14 just before the end of shear upset forming.

しかして、本発明のフランジ部材の製造方法では、−行
程内で、最初にマンドレル20により貫通孔が拡管され
るため、素材の内壁15とマンドレル20が隙間なく接
し、続いて、鍔部16が剪断アプセット成形される時、
素材14の鍔部下面から上端までの寸法h3と、成形さ
れたフランジ部材の下面から上端までの寸法h4がほと
んど変化しないこととなる。
Therefore, in the method for manufacturing a flange member of the present invention, the through hole is first expanded by the mandrel 20 during the -stroke, so the inner wall 15 of the material and the mandrel 20 are in contact with each other without any gap, and then the flange 16 is expanded. When shear upset forming,
The dimension h3 from the lower surface of the flange to the upper end of the raw material 14 and the dimension h4 from the lower surface to the upper end of the molded flange member hardly change.

ずなわち、鍔部16がパンチ18により剪断アプセット
成形され、鍔部16の体積によりフランジ部17が形成
される。
That is, the flange portion 16 is sheared and upset-molded by the punch 18, and the flange portion 17 is formed by the volume of the flange portion 16.

従って、鍔部16の内側の中心軸部のc、d。Therefore, c and d of the central axis portion inside the flange portion 16.

e、fの断面で中心軸回りに形成されるリング状の部分
の体積移動がないため、素材14の中心軸部がフランジ
部17外周方向へ塑性流動することなく、また、貫通孔
15に向けて応力が発生するため、貫通孔15にひけを
生じさせることなくフランジ部17を成形することが可
能となる。
Since there is no volume movement of the ring-shaped portion formed around the central axis in cross sections e and f, the central axis of the material 14 does not plastically flow toward the outer circumference of the flange portion 17 and flows toward the through hole 15. Since stress is generated, it becomes possible to form the flange portion 17 without causing sink marks in the through hole 15.

第3図は、本発明のフランジ部材の製造方法をフューエ
ルインジェクタコアの製造に使用した例を示すもので、
この製造方法では、先ず、第3図(a)に示すような、
例えば、ステンレス鋼からなる金属性の素材31に焼鈍
による熱処理が施され、この後、(b)に示すように、
素材31の中心軸に沿って、例えば、打ち抜きにより貫
通孔33が形成される。
FIG. 3 shows an example in which the method for manufacturing a flange member of the present invention is used to manufacture a fuel injector core.
In this manufacturing method, first, as shown in FIG. 3(a),
For example, a metallic material 31 made of stainless steel is subjected to heat treatment by annealing, and then, as shown in (b),
A through hole 33 is formed along the central axis of the material 31, for example, by punching.

この後、(c)および(d)に示すように、第1および
第2の前方押し出し成形加工が行なわれ、素材31が引
き伸ばされ、中心軸には、貫通孔35.37が形成され
る。
Thereafter, as shown in (c) and (d), first and second forward extrusion molding processes are performed to stretch the material 31 and form through holes 35 and 37 in the central axis.

この後、さらに、拡管と剪断アプセット成形加工により
、(e)に示すようなフランジ部39とストレート状の
(d)の貫通孔より大きな貫通孔41が形成され、フラ
ンジ部材であるフューエルインジェクタコアが製造され
る。
After this, a flange portion 39 as shown in (e) and a through hole 41 larger than the straight through hole (d) as shown in (d) are further formed by tube expansion and shear upset molding, and the fuel injector core, which is a flange member, is formed. Manufactured.

第4図は、第3図の(C)に示す第1の前方押し出し成
形加工の一例を示すものである。
FIG. 4 shows an example of the first front extrusion molding process shown in FIG. 3(C).

第5図は、第3図の(d)に示す第2の前方押し出し成
形加工の一例を示すものである。
FIG. 5 shows an example of the second front extrusion molding process shown in FIG. 3(d).

以上述べたような製造方法によれば、フランジ部材の貫
通孔をプレス加工により高い精度で形成することが可能
となる。
According to the manufacturing method described above, the through-hole of the flange member can be formed with high precision by press working.

なお、以上述べた実施例では、本発明をフューエルイン
ジェクタコアの製造に使用した例について述べたが、本
発明はかかる実施例に限定されるものではなく、部材本
体の中心軸に沿って貫通孔を形成するとともに、部材本
体の外周に、この部材本体の一端面から所定距離を置い
てフランジ部を形成したフランジ部材の製造に広く利用
することができることは勿論である。
In addition, in the embodiments described above, an example was described in which the present invention was used to manufacture a fuel injector core, but the present invention is not limited to such embodiments. It goes without saying that the present invention can be widely used in manufacturing a flange member in which a flange portion is formed on the outer periphery of the member body at a predetermined distance from one end surface of the member body.

また、以上述べた実施例では、素材14の一端から距離
りの位置に鍔部16の形成された素材14を本発明方法
により塑性加工した例について述べたが、本発明はかか
る実施例に限定されるものではなく、例えば、第7図に
示すように、素材91の一端と同一位置に鍔部93の形
成された素材91の塑性加工にも適用きることは勿論で
ある。
Further, in the embodiments described above, an example was described in which the material 14 in which the flange portion 16 was formed at a position a distance from one end of the material 14 was plastically worked by the method of the present invention, but the present invention is limited to such embodiments. For example, as shown in FIG. 7, the present invention can of course be applied to plastic working of a material 91 in which a flange portion 93 is formed at the same position as one end of the material 91.

この場合には、第2図に示した距離りが0になることを
除いて、第2図と同様の方法で塑性加工を行なうことが
できる。
In this case, plastic working can be performed in the same manner as shown in FIG. 2, except that the distance shown in FIG. 2 is zero.

また、素材14を形成する方法も以上述べた実施例に限
定されるものではない。
Furthermore, the method for forming the material 14 is not limited to the embodiments described above.

〔発明の効果〕〔Effect of the invention〕

以上述べたように本発明のフランジ部材の製造方法では
、素材の中心軸に沿ってフランジ部材の貫通孔より小さ
い貫通孔を形成するとともに、外周に、フランジ部の軸
方向幅より大きい軸方向幅を有する鍔部を形成された素
材を用いて、一行程加工により、先ず、素材の貫通孔を
拡管することによりフランジ部の貫通孔を成形し、続い
て、鍔部を軸方向に向けて剪断アプセット成形しながら
鍔部の体積により鍔部の軸方向幅より小さくて外径の大
きいフランジ部を形成するようにしたので、形状1寸法
端度の高い貫通孔を有するフランジ部材を形成すること
ができるという利点がある。
As described above, in the method for manufacturing a flange member of the present invention, a through hole smaller than the through hole of the flange member is formed along the central axis of the material, and the axial width larger than the axial width of the flange portion is formed on the outer periphery. Using a material with a flange formed therein, through one-step processing, first, the through-hole of the flange part is formed by expanding the through-hole of the material, and then the flange is sheared in the axial direction. By forming a flange portion with a larger outer diameter and smaller axial width than the axial width of the flange due to the volume of the flange during upset molding, it is possible to form a flange member having a through hole with a high degree of accuracy in one dimension. It has the advantage of being possible.

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

第1図は本発明のフランジ部材の製造方法で使用される
素材を示す縦断面図である。 第2図は本発明のフランジ部材の製造方法を示す説明図
である。 第3図は本発明のフランジ部材の製造方法を用いてフュ
ーエルインジェクタコアを製造する方法を示す工程図で
ある。 第4図は第1図の(C)の成形方法の一例を示す縦断面
図である。 第5図は第1図の(d)の成形方法の一例を示す縦断面
図である。 第6図は本発明のフランジ部材の製造方法で使用される
他の素材を示す縦断面図である。 第7図はフューエルインジェクタコアを示す縦断面図で
ある。 第8図はフューエルインジェクタコアの素材を示す縦断
面図である。 第9図は従来のフランジ部材の製造方法を示す説明図で
ある。 〔主要な部分の符号の説明〕 14・・・素材 15・・・貫通孔 16・・・鍔部 17・・・フランジ部。 特許出願人 アイダエンジニアリング株式会社ど
FIG. 1 is a longitudinal sectional view showing a material used in the method of manufacturing a flange member of the present invention. FIG. 2 is an explanatory diagram showing a method for manufacturing a flange member of the present invention. FIG. 3 is a process diagram showing a method for manufacturing a fuel injector core using the method for manufacturing a flange member of the present invention. FIG. 4 is a longitudinal sectional view showing an example of the molding method shown in FIG. 1(C). FIG. 5 is a longitudinal sectional view showing an example of the molding method shown in FIG. 1(d). FIG. 6 is a longitudinal sectional view showing another material used in the method for manufacturing a flange member of the present invention. FIG. 7 is a longitudinal sectional view showing the fuel injector core. FIG. 8 is a longitudinal sectional view showing the material of the fuel injector core. FIG. 9 is an explanatory diagram showing a conventional method of manufacturing a flange member. [Explanation of symbols of main parts] 14...Material 15...Through hole 16...Brim part 17...Flange part. Patent applicant AIDA ENGINEERING CO., LTD.

Claims (1)

【特許請求の範囲】[Claims] (1)部材本体の中心軸に沿って貫通孔を有し、かつ、
部材本体の外周に、この部材本体の一端面から所定距離
を置いてフランジ部を有するフランジ部材の製造方法に
おいて、素材の中心軸に沿って前記貫通孔より小さい貫
通孔を形成するとともに、外周に、前記フランジ部の軸
方向幅より大きい軸方向幅を有する鍔部を形成された素
材を用いて、一行程加工により、先ず、前記素材の貫通
孔を拡管することにより前記フランジ部の貫通孔を成形
し、続いて、前記鍔部を軸方向に向けて剪断アプセット
成形しながら前記鍔部の体積により前記鍔部の軸方向幅
より小さくて外径の大きい前記フランジ部を形成するこ
とを特徴とするフランジ部材の製造方法。
(1) Having a through hole along the central axis of the member body, and
In a method for manufacturing a flange member having a flange portion on the outer periphery of the member body at a predetermined distance from one end surface of the member body, a through hole smaller than the through hole is formed along the central axis of the material, and a through hole is formed on the outer periphery. , using a material on which a flange having an axial width larger than the axial width of the flange portion is formed, first, the through hole of the flange portion is expanded by enlarging the through hole of the material through one-stroke processing. The flange portion is formed by the volume of the flange portion and has a larger outer diameter and is smaller than the axial width of the flange portion, while performing shear upset molding with the flange portion directed in the axial direction. A method for manufacturing a flange member.
JP21589788A 1988-08-30 1988-08-30 Manufacture of flange member Pending JPH0263635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21589788A JPH0263635A (en) 1988-08-30 1988-08-30 Manufacture of flange member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21589788A JPH0263635A (en) 1988-08-30 1988-08-30 Manufacture of flange member

Publications (1)

Publication Number Publication Date
JPH0263635A true JPH0263635A (en) 1990-03-02

Family

ID=16680065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21589788A Pending JPH0263635A (en) 1988-08-30 1988-08-30 Manufacture of flange member

Country Status (1)

Country Link
JP (1) JPH0263635A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006181577A (en) * 2004-12-24 2006-07-13 Denso Corp Method for producing piping parts for high pressure and piping parts for high pressure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006181577A (en) * 2004-12-24 2006-07-13 Denso Corp Method for producing piping parts for high pressure and piping parts for high pressure

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