JP2817509B2 - Method of integrally forming outer cylinder of air spring for railway vehicle - Google Patents
Method of integrally forming outer cylinder of air spring for railway vehicleInfo
- Publication number
- JP2817509B2 JP2817509B2 JP10054292A JP10054292A JP2817509B2 JP 2817509 B2 JP2817509 B2 JP 2817509B2 JP 10054292 A JP10054292 A JP 10054292A JP 10054292 A JP10054292 A JP 10054292A JP 2817509 B2 JP2817509 B2 JP 2817509B2
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- seal ring
- air spring
- railway vehicle
- forging
- 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 - Lifetime
Links
Landscapes
- Forging (AREA)
- Fluid-Damping Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、鉄道車両に使用され
るダイヤフラム形空気ばねの外筒を鍛造により一体成形
する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for integrally forming an outer cylinder of a diaphragm type air spring used in a railway vehicle by forging.
【０００２】[0002]
【従来の技術】鉄道車両に使用されるダイヤフラム形空
気ばねは、図１および図２に示すように、アルミニウム
合金製または鋼製の外筒１（エァドーム）と内筒６（ピ
ストン）の間の外周部にダイヤフラム７を設けてなる。
その外筒１は、外筒全体の形状をアルミニウム合金薄板
または薄鋼板の深絞りにより成形し、ブロック素材から
機械加工により作られたスピコット２およびシール環３
を円盤中央部に溶接して成形されていた。2. Description of the Related Art As shown in FIGS. 1 and 2, a diaphragm type air spring used in a railway vehicle is provided between an outer cylinder 1 (air dome) and an inner cylinder 6 (piston) made of aluminum alloy or steel. A diaphragm 7 is provided on the outer periphery.
The outer cylinder 1 has a spicot 2 and a seal ring 3 formed by machining the entire outer cylinder by deep drawing of an aluminum alloy thin plate or a thin steel plate and machining the block material.
Was welded to the center of the disk.
【０００３】[0003]
【発明が解決しようとする課題】上記のごとく、従来の
外筒は、アルミニウム合金薄板または薄鋼板と他にブロ
ック素材から作られたスピコットとシール環の３部材を
溶接して成形されるため、溶接により歪が発生したり、
強度が低下する上に、製作工数が多く原価の低減ができ
なかった。この考案は、上記の欠点を除くため、アルミ
ニウム合金素材または鋼素材（以下単に素材という）を
鍛造して外筒を一体成形する方法を提供するものであ
る。As described above, the conventional outer cylinder is formed by welding three members of a spigot and a seal ring made of an aluminum alloy thin plate or a thin steel plate and another block material. Distortion occurs due to welding,
In addition to the reduction in strength, the number of man-hours required for production was large and the cost could not be reduced. This invention provides a method for integrally forming an outer cylinder by forging an aluminum alloy material or a steel material (hereinafter simply referred to as a material) in order to eliminate the above disadvantages.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するた
め、この発明はビレットから所要寸法に切断された素材
を通常の鍛造温度に加熱して、第１工程として液圧プレ
スにより鍛造し、片面中央にスピゴットを成形し、他面
中央にシール環の予備成形を行うとともに、周囲を円形
に突出させ、引続き第２工程として回転鍛造により周囲
の円形部分を外筒形状に成形するとともにシール環部分
を仕上げ成形し、第３工程として複動プレスにより被鍛
造品の外周部分を上下型で拘束してシール環に穴明け成
形を行い仕上げる鉄道車両用空気ばねの外筒一体成形方
法である。In order to achieve the above-mentioned object, according to the present invention, a material cut to a required size from a billet is heated to a normal forging temperature, and as a first step, forged by a hydraulic press, and one side is formed. A spigot is formed at the center, a seal ring is preformed at the center of the other surface, and the periphery is protruded in a circular shape. Subsequently, as a second step, the surrounding circular portion is formed into an outer cylindrical shape by rotary forging, and the seal ring portion is formed. The third step is a method for integrally forming the outer cylinder of a railcar air spring, in which the outer periphery of the forged product is constrained by a double-acting press with an upper and lower die to form a hole in a seal ring and finish as a third step.
【０００５】[0005]
【作用】素材から液圧プレスを使って予備成形を行い、
引続き回転鍛造により外筒全体の形状を成形し、最後に
複動プレスを使ってシール環の穴明けを行って、外筒を
一体成形するから、最後の穴明け工程において全体とし
て歪みは生ぜず、また第２工程の回転鍛造で生じた歪も
最終工程で消滅させることができる。外筒は、上記のご
とく鍛造により一体構造で成形されるため、厚肉の中央
部分と薄肉の外周部分とは、加工流線に切れ目がなく従
来の溶接品に比べ、強度を増大できる。また、一体成形
により加工工数が減少し製造コストの低減が図れる。[Action] Preform is performed from the material using a hydraulic press,
Subsequently, the entire outer cylinder shape is formed by rotary forging, and finally the seal ring is drilled using a double-acting press, and the outer cylinder is integrally formed.Therefore, no distortion is generated in the final drilling process as a whole. Also, the strain generated by the rotary forging in the second step can be eliminated in the final step. Since the outer cylinder is formed into an integral structure by forging as described above, the thick central portion and the thin outer peripheral portion have no break in the processing streamline, and the strength can be increased as compared with a conventional welded product. In addition, the number of processing steps is reduced by the integral molding, and the manufacturing cost can be reduced.
【０００６】[0006]
【実施例】この発明の詳細を図３の工程図に基づいて説
明する。鍛造用アルミニウム合金または鍛造用鋼のビレ
ットから所要寸法に切断した素材８を鍛造用加熱炉で所
要の鍛造温度に加熱する。加熱された素材８は第１工程
として液圧プレスを使って鍛造し、Ｂ図に示すように片
面中央にスピコット２を成形し、他面にシール環の予備
成形部９を形成するとともに、外周部分を製品外周部５
が形成できる厚さで円盤状に予備成形する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described with reference to the process chart of FIG. The blank 8 cut to a required size from a billet of an aluminum alloy for forging or steel for forging is heated to a required forging temperature in a heating furnace for forging. The heated raw material 8 is forged using a hydraulic press as a first step, a spicot 2 is formed in the center of one side as shown in FIG. Part of the outer peripheral part 5
Is preformed into a disk with a thickness that allows the formation of
【０００７】引続き第２工程として回転鍛造機を使って
回転鍛造し、Ｃ図に示すようにシール環３および外周部
５を仕上げ成形する。Subsequently, as a second step, rotary forging is performed using a rotary forging machine, and the seal ring 3 and the outer peripheral portion 5 are finish-formed as shown in FIG.
【０００８】最後に第３工程として複動型プレスを使っ
て外周部５を上下型で抑制してシール環３に穴明けを行
い所定数の穴４を成形し、Ｄ図に示すように外筒１を一
体成形する。Finally, as a third step, a double-acting press is used to restrain the outer peripheral portion 5 with an upper and lower mold, and a hole is formed in the seal ring 3 to form a predetermined number of holes 4 as shown in FIG. The cylinder 1 is integrally formed.
【０００９】次に、実施例における素材および鍛造設備
等について一例を示す。 素 材 ： Ａｌ５０８３、直径２４８ｍｍ×長さ１
９２ｍｍ、重量２５ｋｇ 鍛造温度 ： ３８０〜４５０℃ 液圧プレス： 能力４０００Ｔ 回転鍛造機： 能力５００Ｔ 複動プレス： 能力３０００Ｔ 鍛造製品 ： 重量２５ｋｇNext, an example of the raw material and forging equipment in the embodiment will be described. Material: Al5083, diameter 248 mm x length 1
92 mm, weight 25 kg Forging temperature: 380-450 ° C Hydraulic press: Capacity 4000T Rotary forging machine: Capacity 500T Double-acting press: Capacity 3000T Forged product: Weight 25 kg
【００１０】[0010]
【発明の効果】この発明は、空気ばね用外筒を鍛造によ
る一体成形品として構成するため、製造工程を簡素化し
て強度を向上した高品質のものを、製造コストを低減し
て製造することができる。According to the present invention, since the outer cylinder for the air spring is formed as an integrally molded product by forging, it is possible to simplify the production process and produce a high-quality product having improved strength at a reduced production cost. Can be.
【図１】この発明の実施により作られた空気ばね用外筒
の半部は断面して示す全体の正面図である。FIG. 1 is an overall front view showing a half section of an outer cylinder for an air spring made according to an embodiment of the present invention.
【図２】図１の空気ばね用外筒の半部を示す底面図であ
る。FIG. 2 is a bottom view showing a half portion of the air spring outer cylinder of FIG. 1;
【図３】この発明の実施による空気ばね用外筒の製造工
程を示す説明図で、Ａは素材を、Ｂは第１工程として液
圧プレスにより鍛造した中間鍛造品を、Ｃは第２工程と
して回転鋳造により成形した鍛造品を、Ｄは第３工程と
して複動型プレスによりシール環に穴明けを行った完成
鍛造品である。3 is an explanatory view showing a manufacturing process of an outer cylinder for an air spring according to an embodiment of the present invention, wherein A is a raw material, B is an intermediate forged product forged by a hydraulic press as a first process, and C is a second process. Is a forged product formed by rotary casting, and D is a completed forged product in which a seal ring is perforated by a double-acting press as a third step.
１ 外筒 ２ スピゴット ３ シール環 ４ 穴 ５ 外周部 ６ 内筒 ７ ダイヤフラム ８ 素材 ９ 予備成形部 DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Spigot 3 Seal ring 4 Hole 5 Outer peripheral part 6 Inner cylinder 7 Diaphragm 8 Material 9 Preformed part
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−287320（ＪＰ，Ａ) 特開 昭60−261635（ＪＰ，Ａ) 特開 平２−125110（ＪＰ，Ａ) 特公 昭52−44307（ＪＰ，Ｂ２) 特公 昭56−29935（ＪＰ，Ｂ２) 特公 昭61−42131（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) B21K 1/00 - 31/00 B21J 1/00 - 13/14 B21J 17/00 - 19/04 B61G 11/12 F16F 9/05──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-287320 (JP, A) JP-A-60-261635 (JP, A) JP-A-2-125110 (JP, A) 44307 (JP, B2) JP-B-56-29935 (JP, B2) JP-B-61-42131 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB name) B21K 1/00-31 / 00 B21J 1/00-13/14 B21J 17/00-19/04 B61G 11/12 F16F 9/05
Claims (1)
ミニウム合金素材または鋼素材を通常の鍛造温度に加熱
して、第１工程として液圧プレスにより鍛造し、片面中
央にスピゴットを成形し、他面中央にシール環の予備成
形を行うとともに、周囲を円形に突出させ、引続き第２
工程として回転鍛造により周囲の円形部分を外筒形状に
成形するとともにシール環部分を仕上げ成形し、第３工
程として複動プレスにより被鍛造品の外周部分を上下型
で拘束してシール環に穴明け成形を行い仕上げることを
特徴とする鉄道車両用空気ばねの外筒一体成形方法。1. An aluminum alloy or steel material cut to a required size from a billet is heated to a normal forging temperature, forged by a hydraulic press as a first step, a spigot is formed at the center of one side, and the other side is formed. The seal ring is preformed at the center and the periphery is projected circularly.
As a process, the surrounding circular portion is formed into an outer cylindrical shape by rotary forging, and the seal ring portion is finish-formed. As a third process, the outer peripheral portion of the forged product is restrained by a double-acting press with an upper and lower die to form a hole in the seal ring. A method for integrally forming an outer cylinder of an air spring for a railway vehicle, which is performed by forming after finishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10054292A JP2817509B2 (en) | 1992-03-25 | 1992-03-25 | Method of integrally forming outer cylinder of air spring for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10054292A JP2817509B2 (en) | 1992-03-25 | 1992-03-25 | Method of integrally forming outer cylinder of air spring for railway vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05269540A JPH05269540A (en) | 1993-10-19 |
| JP2817509B2 true JP2817509B2 (en) | 1998-10-30 |
Family
ID=14276845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10054292A Expired - Lifetime JP2817509B2 (en) | 1992-03-25 | 1992-03-25 | Method of integrally forming outer cylinder of air spring for railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2817509B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294432A (en) * | 2010-06-22 | 2011-12-28 | 鑫鸿交通工业（安徽）有限公司 | Method for manufacturing automobile engine cover and mould and material plate used in method |
-
1992
- 1992-03-25 JP JP10054292A patent/JP2817509B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05269540A (en) | 1993-10-19 |
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