JP2535223B2 - Molding method for parts having deformed flanges - Google Patents
Molding method for parts having deformed flangesInfo
- Publication number
- JP2535223B2 JP2535223B2 JP1120351A JP12035189A JP2535223B2 JP 2535223 B2 JP2535223 B2 JP 2535223B2 JP 1120351 A JP1120351 A JP 1120351A JP 12035189 A JP12035189 A JP 12035189A JP 2535223 B2 JP2535223 B2 JP 2535223B2
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- flange
- molding
- hub
- punch
- 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 - Fee Related
Links
Landscapes
- Forging (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は周囲に異形フランジを有する部品を温間閉
塞鍛造により成形する成形方法に関する。Description: TECHNICAL FIELD The present invention relates to a forming method for forming a component having a deformed flange on its periphery by warm closed forging.
従来周囲にフランジ1bを有する第５図に示すような機
械部品Ａを成形する場合、まず第６図（イ）に示すよう
に上型ｃと下型ｄの間に素材ｅを収容して上型ｃと下型
ｄを閉塞し、次に下型ｄ内に設けられたパンチｆを上昇
させて、上型ｃ内に設けられたパンチｇの間で素材ｅを
加圧して第６図（ロ）に示すようにまず上下ハブ1a,1c
を成形し、その後素材ｅをフランジ1bを成形するキヤビ
デイｊ内へ流動させて第６図（ハ）に示すようにフラン
ジ1b部分を成形している。When molding a machine part A as shown in FIG. 5 having a flange 1b on the periphery, a material e is first housed between an upper mold c and a lower mold d as shown in FIG. 6 (a). The die c and the lower die d are closed, and then the punch f provided in the lower die d is raised to pressurize the material e between the punches g provided in the upper die c, as shown in FIG. First, as shown in (b), the upper and lower hubs 1a, 1c
And then the material e is made to flow into the cavity j for forming the flange 1b to form the flange 1b portion as shown in FIG. 6 (C).
しかし上記従来の成形方法では、上ハブ1aを成形する
キヤビテイｋ内にはじめに素材ｅが流入してキヤビテイ
ｋ内に素材ｅが充満された後、フランジ1bを成形するキ
ヤビテイｊ内へ素材ｅが流動されるため、第６図（ハ）
に示すｉの部分に材料の巻込みが発生して、第６図
（ニ）に示すように成形品に巻込みなどの欠陥ｍが発生
する不具合があった。However, in the above-described conventional molding method, the material e first flows into the cavity k for molding the upper hub 1a to fill the material e in the cavity k, and then the material e flows into the cavity j for molding the flange 1b. As shown in Figure 6, (c)
There was a problem that the material was rolled up in the portion of i shown in (1), and defects m such as rolling up were generated in the molded product as shown in FIG.
この発明は上記不具合を改善する目的でなされたもの
で、巻込みなどの欠陥が発生することのない異形フラン
ジを有する部品の成形方法を提供しようとするものであ
る。The present invention has been made for the purpose of improving the above problems, and an object of the present invention is to provide a method of molding a component having a deformed flange that does not cause defects such as winding.
この発明は上記目的を達成するために、下ハブを成形
するキャビティの素材流入口より奥方の断面減小率を50
〜80％に設定した下型と上型の間に加熱した素材を閉塞
し、次に上型内に設けた上パンチを下降させて下型内の
下パンチの間で素材を加圧することにより、まず素材を
上ハブを成形するキャビティとフランジを成形するキャ
ビティ内へ流動させ、その後下ハブを成形するキャビテ
ィへ素材を流動させて、部品を温間閉塞鍛造するように
したもので、フランジが異形で、フランジを成形するキ
ャビティへ流動する素材の流れが均一でない場合でも、
まずフランジを成形するキャビティに素材が流動し、フ
ランジを成形するキャビティが充満されたところで、下
ハブを成形するキャビティへ素材が流動するため、フラ
ンジに欠肉や割れが発生したり、上ハブとフランジの連
設部付近に巻込みが発生することがないため、欠陥のな
い品質の良好な成形品が得られるようになる。In order to achieve the above-mentioned object, the present invention reduces the cross-sectional reduction ratio of the cavity forming the lower hub from the material inlet port by 50%.
By closing the heated material between the lower die and upper die set to ~ 80%, then lowering the upper punch provided in the upper die and pressing the material between the lower punches in the lower die First, the material is made to flow into the cavity for forming the upper hub and the cavity for forming the flange, and then the material is made to flow into the cavity for forming the lower hub, and the parts are warm-closed and forged. Even if the material is irregular and the flow of material to the cavity for forming the flange is not uniform,
First, the material flows into the cavity that forms the flange, and when the cavity that forms the flange fills up, the material flows to the cavity that forms the lower hub. Since no entrainment occurs near the continuous portion of the flange, a molded product of good quality without defects can be obtained.
この発明の一実施例を第１図ないし第５図を参照して
詳述する。An embodiment of the present invention will be described in detail with reference to FIGS.
まず円柱状の素材１を700〜900℃の成形温度にまで加
熱したら上型２と下型３の間に収容して、上型２と下型
３を第２図に示すように閉塞する。First, when the cylindrical material 1 is heated to a molding temperature of 700 to 900 ° C., it is housed between the upper mold 2 and the lower mold 3, and the upper mold 2 and the lower mold 3 are closed as shown in FIG.
上型２及び下型３内にはそれぞれ上パンチ４及び下パ
ンチ５が設けられていて、上パンチ４と上型２の間に上
ハブ1a及びフランジ1bを成形するキヤビテイ2a,2bが、
そして下パンチ５と下型３の間に下ハブ1cを成形するキ
ヤビテイ3aがそれぞれ設けられていると共に、下ハブ1c
成形用のキヤビテイ3aは素材１の流入口に対して奥方の
断面減少率が50〜80％に設定されている。Upper punch 4 and lower punch 5 are provided in upper mold 2 and lower mold 3, respectively, and cavities 2a and 2b for molding upper hub 1a and flange 1b between upper punch 4 and upper mold 2,
The cavities 3a for molding the lower hub 1c are provided between the lower punch 5 and the lower mold 3, and the lower hub 1c is also provided.
The molding cavity 3a has a cross-sectional reduction rate of 50 to 80% in the depth direction with respect to the inlet of the material 1.
これによって素材１を閉塞後上パンチ４を下降させて
素材１の成形を開始すると、まず第３図に示すように素
材１が上ハブ1aを成形するキヤビテイ2aとフランジ1bを
成形するキヤビテイ2bへ流動されて上ハブ1aとフランジ
1bが成形される。As a result, when the material 1 is closed and the upper punch 4 is lowered to start forming the material 1, first, as shown in FIG. 3, the material 1 moves to the cavity 2a for forming the upper hub 1a and the cavity 2b for forming the flange 1b. Flowed and upper hub 1a and flange
1b is molded.
その後さらに上パンチ４を下降させると、断面減少率
が50〜80％に設定されて材料の流れにくくなった下ハブ
成形用のキヤビテイ3aに素材１が第４図に示すように流
動してこれを充満する。After that, when the upper punch 4 is further lowered, the cross-section reduction rate is set to 50 to 80%, and the material 1 flows into the cavity 3a for forming the lower hub where the material does not flow easily, and the material flows as shown in FIG. To fill up.
素材１の加圧が完了したら上型２及び上パンチ４を上
昇させ、その後下パンチ５を上昇させて下型３内より成
形品を突き出すことにより第５図に示すような外周部に
フランジ1bを有する部品Ａが得られるようになる。When the pressurization of the material 1 is completed, the upper die 2 and the upper punch 4 are raised, and then the lower punch 5 is raised to eject the molded product from the lower die 3 to form the flange 1b on the outer peripheral portion as shown in FIG. The component A having
なお下ハブ1cを成形するキヤビテイ3aの断面減少率を
50〜80％の範囲としたのは、断面減少率が50％以下にな
ると、素材１が下ハブ1cを成形するキヤビテイ3aに流動
しやすくなって巻込みなどの欠陥が発生し、80％以上に
すると、上パンチ４の面圧が高くなり過ぎて成形が困難
となるためである。Note that the cross-section reduction rate of the cavity 3a that molds the lower hub 1c
The range of 50 to 80% is that when the cross-section reduction rate is 50% or less, the material 1 easily flows into the cavity 3a that molds the lower hub 1c and defects such as entrainment occur, and 80% or more. This is because, if it is set, the surface pressure of the upper punch 4 becomes too high and the molding becomes difficult.
この発明は以上詳述したように、下ハブを成形するキ
ャビティの断面減少率を50〜80％に限定したことによ
り、閉塞された金型内で素材を加圧すると、下ハブを成
形するキャビティ内への素材の流動が制限されるため、
素材はまずフランジを成形するキャビティ内へと流動す
る。As described in detail above, this invention limits the cross-sectional reduction rate of the cavity for molding the lower hub to 50-80%, so that when the material is pressed in the closed mold, the cavity for molding the lower hub is formed. Since the flow of material into the inside is restricted,
The material first flows into the cavity that forms the flange.
これによって異形フランジであって、キャビティ内へ
流動する素材の流動量が均一でない場合でも、フランジ
に割れや欠肉のない成形品が得られるようになる。As a result, even in the case of a deformed flange, even if the flow rate of the material flowing into the cavity is not uniform, a molded product without cracks or lack of thickness in the flange can be obtained.
またフランジを成形するキャビティ内に素材が充満さ
れた後、下ハブを成形するキャビディ内に素材が流動す
るため、従来の下ハブを成形するキャビティ内に素材が
流動した後フランジを成形するキャビティ内に素材が流
動するときのようなフランジの付け根部に材料の巻込み
が発生することがないため、巻込み欠陥のない異形フラ
ンジを有する部品を精度よく成形することができる。し
かも従来の押出し成形などでは困難な異形フランジの上
下面にハブを有する部品であっても、上記温間鍛造方法
により容易に得られるようになる。Also, after the material is filled in the cavity that molds the flange, the material flows into the cavities that mold the lower hub, so inside the cavity that molds the flange after the material flows into the cavity that molds the lower hub. Since the material is not rolled up at the root of the flange as when the material flows, the component having the deformed flange with no winding defect can be accurately formed. Moreover, even a component having a hub on the upper and lower surfaces of a deformed flange, which is difficult to obtain by conventional extrusion molding, can be easily obtained by the warm forging method.
図面はこの発明の一実施例を示し、第１図ないし第５図
は成形工程図、第６図（イ），（ロ），（ハ），（ニ）
は従来の説明図である。 １は素材、1aは上ハブ、1bはフランジ、1cは下ハブ、２
は上型、2a,2bはキヤビテイ、３は下型、3aはキヤビテ
イ、４は上パンチ、５は下パンチ、Ａは部品。The drawings show one embodiment of the present invention, and FIGS. 1 to 5 are molding process drawings, and FIGS. 6 (a), (b), (c), and (d).
Is a conventional explanatory view. 1 is material, 1a is upper hub, 1b is flange, 1c is lower hub, 2
Is an upper die, 2a and 2b are cavities, 3 is a lower die, 3a is a cavity, 4 is an upper punch, 5 is a lower punch, and A is a part.
Claims (1)
入口より奥方の断面減少率を50〜80％に設定した下型３
と上型２の間に加熱した素材１を閉塞し、次に上型２内
に設けた上パンチ４を下降させて下型３内の下パンチ５
の間で素材１を加圧することにより、まず素材１を上ハ
ブ1aを成形するキャビティ2aとフランジ1bを成形するキ
ャビティ2b内へ流動させ、その後下ハブ1cを成形するキ
ャビティ3aへ素材１を流動させて部品Ａを温間閉塞鍛造
することを特徴とする異形フランジを有する部品の成形
方法。1. A lower mold 3 in which a cross-sectional reduction rate in the interior of the cavity 3a for molding the lower hub 1c from the material inlet is set to 50 to 80%.
The heated material 1 is closed between the upper die 2 and the upper die 2, and then the upper punch 4 provided in the upper die 2 is lowered to lower the lower punch 5 in the lower die 3.
By pressing the material 1 between them, the material 1 is first flowed into the cavity 2a for molding the upper hub 1a and the cavity 2b for molding the flange 1b, and then the material 1 is flowed to the cavity 3a for molding the lower hub 1c. A method for forming a component having a deformed flange, characterized in that the component A is subjected to warm closed forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1120351A JP2535223B2 (en) | 1989-05-16 | 1989-05-16 | Molding method for parts having deformed flanges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1120351A JP2535223B2 (en) | 1989-05-16 | 1989-05-16 | Molding method for parts having deformed flanges |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02299739A JPH02299739A (en) | 1990-12-12 |
| JP2535223B2 true JP2535223B2 (en) | 1996-09-18 |
Family
ID=14784075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1120351A Expired - Fee Related JP2535223B2 (en) | 1989-05-16 | 1989-05-16 | Molding method for parts having deformed flanges |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2535223B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101264418B1 (en) | 2005-05-05 | 2013-05-14 | 아메리칸 액슬 앤드 매뉴팩쳐링, 인코포레이티드 | Hotformed hubs and method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4581615B2 (en) * | 2004-10-13 | 2010-11-17 | 日本精工株式会社 | Wheel supporting hub unit, raceway member of wheel supporting hub unit, and manufacturing method thereof |
| EP1647418B1 (en) | 2004-10-13 | 2012-06-27 | Nsk Ltd. | Hub unit with wheel support and bearing ring, and method of manufacturing the hub unit |
| JP5252838B2 (en) * | 2007-06-04 | 2013-07-31 | Ｎｔｎ株式会社 | Wheel bearing device |
| JP2009255751A (en) * | 2008-04-17 | 2009-11-05 | Nsk Ltd | Metallic member with outward flange part, and manufacturing method therefor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61195726A (en) * | 1985-02-26 | 1986-08-30 | Tokai Rika Co Ltd | Manufacture of cylinder member with flange |
-
1989
- 1989-05-16 JP JP1120351A patent/JP2535223B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101264418B1 (en) | 2005-05-05 | 2013-05-14 | 아메리칸 액슬 앤드 매뉴팩쳐링, 인코포레이티드 | Hotformed hubs and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02299739A (en) | 1990-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |