JP2507868B2 - Method and device for manufacturing stepped cylindrical part - Google Patents

Method and device for manufacturing stepped cylindrical part

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Publication number
JP2507868B2
JP2507868B2 JP6427194A JP6427194A JP2507868B2 JP 2507868 B2 JP2507868 B2 JP 2507868B2 JP 6427194 A JP6427194 A JP 6427194A JP 6427194 A JP6427194 A JP 6427194A JP 2507868 B2 JP2507868 B2 JP 2507868B2
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JP
Japan
Prior art keywords
final
blank
peripheral
shape
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 - Lifetime
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JP6427194A
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Japanese (ja)
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JPH07275990A (en
Inventor
誠一 小谷
Original Assignee
株式会社コタニ
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Priority to JP6427194A priority Critical patent/JP2507868B2/en
Publication of JPH07275990A publication Critical patent/JPH07275990A/en
Application granted granted Critical
Publication of JP2507868B2 publication Critical patent/JP2507868B2/en
Anticipated expiration legal-status Critical
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Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は、オートミッション用リ
ングギア等の段付き円筒状部品の製造方法及び装置に関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for manufacturing a stepped cylindrical part such as a ring gear for an auto mission.
【0002】[0002]
【従来の技術】従来、この種のオートミッション用リン
グギアは、図7に示すように、ビレット(a1)を加熱
し、上下方向から据え込み鍛造して円板状のブランク
(a2)を成形し、続いて前記ブランク(a2)を上下
から3000TONプレスで型鍛造して最終製品と同一
内外径の有底円筒状の半製品形状(a3)とし、最後に
底部を打ち抜きして最終製品形状(a4)を成形してい
る。
2. Description of the Related Art Conventionally, as shown in FIG. 7, a ring gear for an auto mission of this type heats a billet (a1) and upsets it from above and below to form a disc-shaped blank (a2). Then, the blank (a2) is die-forged from above and below with a 3000 TON press into a bottomed cylindrical semi-finished product shape (a3) having the same inner and outer diameters as the final product, and finally the bottom part is punched to obtain the final product shape ( a4) is molded.
【0003】[0003]
【発明が解決しようとする課題】従来の製造方法は、円
板状のブランク(a2)から直接、最終製品と同一内外
径の有底円筒状の半製品形状(a3)を型鍛造している
ため、3000TONプレスという大型鍛造プレスが必
要となり、設備費及び金型費が高価であることと、後で
行われる機械加工(旋削)における取り代(旋削加工
量)が3〜4mmと大きくなり、2〜3回の加工が必要
となり、かつ、ポンチカスの重量も大きいため、製造コ
ストが高くつく欠点があった。
In the conventional manufacturing method, a blank (a2) having a disk shape is directly die-forged into a semi-finished product (a3) having a bottomed cylindrical shape having the same inner and outer diameters as the final product. Therefore, a large forging press of 3000 TON press is required, the equipment cost and the die cost are high, and the machining allowance (turning amount) in the machining (turning) performed later is as large as 3 to 4 mm, Since it requires two to three times of machining and the weight of the punch punch is large, the manufacturing cost is high.
【0004】本発明は、従来技術の上記欠点に鑑みて提
案されたもので、その目的とするところは、設備費及び
ランニングコストを削減し、後加工の取り代を減少させ
て製造コストを極力低減させ得る段付き円筒状部品の製
造方法及び装置を提供することにある。
The present invention has been proposed in view of the above-mentioned drawbacks of the prior art, and an object thereof is to reduce equipment cost and running cost, and reduce machining allowance for post-processing to maximize manufacturing cost. It is an object of the present invention to provide a method and apparatus for manufacturing a stepped cylindrical part that can be reduced.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するため
本発明の方法は、ビレットを誘導加熱炉で所定温度に加
熱し、据え込みポンチとダイスで円板状のブランクに据
え込みし、次に、最終製品の内外径寸法よりも小径の成
形ポンチとダイスで段付き有底円筒形状の中間品ブラン
クを成形し、このブランクの底部を底部打ち抜きポンチ
とダイスで打ち抜いて最終製品の内外径寸法よりも小径
で段付き無底円筒状の鍛造ブランクを成形する鍛造プレ
ス工程と、最終製品の外周形状と同一の形状を内周面に
形成した外周整形リングと、最終製品の内周形状と同一
の形状を外周面に形成したマンドレルとの間に鍛造プレ
ス工程で成形した鍛造ブランクを挟持し、軸方向寸法を
規制して該鍛造ブランクに径方向の挟持圧力を加えて最
終製品形状を閉塞圧延転造する工程とからなる。
In order to achieve the above object, the method of the present invention comprises heating a billet to a predetermined temperature in an induction heating furnace, installing the billet in a disk-shaped blank with an upsetting punch and a die, and then In addition, a stepped bottomed cylindrical intermediate product blank is formed with a forming punch and die with a diameter smaller than the inner and outer diameter dimensions of the final product, and the bottom of this blank is punched with a bottom punching punch and die to obtain the inner and outer diameter dimensions of the final product. Forging press step to form a stepped bottomless cylindrical forging blank with a smaller diameter than that, an outer peripheral shaping ring with the same outer peripheral shape of the final product formed on the inner peripheral surface, and the inner peripheral shape of the final product The forged blank formed in the forging press step is sandwiched between the mandrel having the shape of the outer peripheral surface and the axial dimension is regulated to apply a clamping pressure in the radial direction to close the final product shape. And a step to extend rolling.
【0006】また、本発明の装置は、ビレットを誘導加
熱炉で所定温度に加熱し、据え込みポンチとダイスで円
板状のブランクに据え込みし、次に、最終製品の内外径
寸法よりも小径の成形ポンチとダイスで段付き有底円筒
形状の中間品ブランクを成形し、このブランクの底部を
底部打ち抜きポンチとダイスで打ち抜いて最終製品の内
外径寸法よりも小径で段付き無底円筒状の鍛造ブランク
を成形する鍛造プレスと、最終製品の外周形状と同一の
形状を内周面に形成した外周整形リングと、最終製品の
内周形状と同一の形状を外周面に形成したマンドレルと
を備え、これらの外周整形リングとマンドレルとの間に
前記鍛造ブランクを挟持し、軸方向寸法を規制して該鍛
造ブランクに径方向の挟持圧力を加えて最終製品形状を
閉塞圧延転造するローリングマシンとからなる。
Further, in the apparatus of the present invention, the billet is heated to a predetermined temperature in an induction heating furnace, and is set up in a disk-shaped blank by a set-up punch and a die, and then the inner and outer diameter dimensions of the final product are set. A stepped bottomed cylindrical intermediate product blank is formed with a small diameter forming punch and die, and the bottom of this blank is punched out with a bottom punch and die to form a stepless bottomless cylinder with a diameter smaller than the inner and outer diameter dimensions of the final product. Forging press for forming the forged blank of, the outer peripheral shaping ring formed on the inner peripheral surface with the same shape as the outer peripheral shape of the final product, and the mandrel formed on the outer peripheral surface with the same shape as the inner peripheral shape of the final product. The forging blank is sandwiched between the outer peripheral shaping ring and the mandrel, the axial dimension is regulated, and a clamping pressure in the radial direction is applied to the forging blank to roll-roll the final product shape. Consisting of over ring machine.
【0007】[0007]
【作用】本発明における鍛造プレスは、最終製品の内外
径寸法よりも小径円筒状の鍛造ブランクをビレットから
成形し、かつ、底部も最終製品の内外径寸法よりも小径
の状態で打ち抜きするようにしたから、1600TON
プレスで十分成形が可能となり、金型も小型安価なもの
を使用でき、ポンチカス重量も減少させることができ
る。そして、外周整形リングとマンドレルとの間に前記
鍛造ブランクを挟持し、軸方向寸法を規制して該鍛造ブ
ランクに径方向の挟持圧力を加えて最終製品形状を閉塞
圧延転造するため、後工程における機械加工の取り代の
少ない製品を製造することができる。
In the forging press of the present invention, a cylindrical forging blank having a diameter smaller than the inner and outer diameter dimensions of the final product is formed from the billet, and the bottom part is also punched in a state where the diameter is smaller than the inner and outer diameter dimensions of the final product. Because it did, 1600 TON
It can be sufficiently molded by a press, a small and inexpensive metal mold can be used, and the weight of the punch scraps can be reduced. Then, the forging blank is sandwiched between the outer peripheral shaping ring and the mandrel, and the final product shape is closed and rolled by applying a clamping pressure in the radial direction to the forging blank by controlling the axial dimension, so that the post-process is performed. It is possible to manufacture a product with a small machining allowance in.
【0008】[0008]
【実施例】図1は本発明の方法を示す工程説明図であっ
て、本発明の方法は、ビレット(b1)を誘導加熱炉で
所定温度(例えば、1250℃)に加熱し、据え込みポ
ンチとダイスで円板状のブランク(b2)に据え込み
し、次に、最終製品の内外径寸法よりも小径の成形ポン
チとダイスで段付き有底円筒形状の中間品ブランク(b
3)を成形し、このブランク(b3)の底部を底部打ち
抜きポンチとダイスで打ち抜いて最終製品の内外径寸法
よりも小径で段付き無底円筒状の鍛造ブランク(b4)
を成形する鍛造プレス工程と、最終製品(c)の外周形
状と同一の形状を内周面に形成した外周整形リング
(1)と、最終製品(c)の内周形状と同一の形状を外
周面に形成したマンドレル(2)との間に鍛造プレス工
程で成形した鍛造ブランク(b4)を挟持し、軸方向寸
法を規制して該鍛造ブランク(b4)に径方向の挟持圧
力を加えて最終製品形状を閉塞圧延転造する工程とから
なる。
FIG. 1 is a process explanatory view showing the method of the present invention. In the method of the present invention, a billet (b1) is heated to a predetermined temperature (for example, 1250 ° C.) in an induction heating furnace, and an upsetting punch is used. With a die and a die into a disk-shaped blank (b2), and then a punch with a diameter smaller than the inner and outer diameters of the final product and a die with a stepped bottomed cylindrical intermediate product blank (b2).
3) is formed, and the bottom of this blank (b3) is punched with a bottom punch and a die to form a stepped bottomless cylindrical forged blank (b4) with a diameter smaller than the inner and outer diameter dimensions of the final product.
Forging press step for molding, outer peripheral shaping ring (1) having the same shape as the outer peripheral shape of the final product (c) formed on the inner peripheral surface, and the same outer peripheral shape as the outer peripheral shape of the final product (c) The forging blank (b4) formed in the forging press step is sandwiched between the mandrel (2) formed on the surface and the axial dimension is regulated to apply a clamping pressure in the radial direction to the forging blank (b4) to make the final. The process comprises the step of closing and rolling the product shape.
【0009】本発明の装置は、図2に示すように、ビレ
ット(b1)を誘導加熱炉(3)で所定温度(例えば、
1250℃)に加熱し、これを据え込みポンチ(4)と
ダイス(5)で円板状のブランク(b2)に据え込み
し、次に、最終製品(c)の内外径寸法よりも小径の成
形ポンチ(6)とダイス(7)で段付き有底円筒形状の
中間品ブランク(b3)を成形し、このブランク(b
3)の底部を底部打ち抜きポンチ(8)とダイス(9)
で打ち抜いて最終製品(c)の内外径寸法よりも小径で
段付き無底円筒状の鍛造ブランク(b4)を成形する鍛
造プレス(10)と、図3に示すように、最終製品
(c)の外周形状と同一の形状を内周面に形成した外周
整形リング(1)と、最終製品(c)の内周形状と同一
の形状を外周面に形成したマンドレル(2)との間に鍛
造プレス工程で成形した鍛造ブランク(b4)を挟持
し、軸方向寸法を規制して該鍛造ブランク(b4)に径
方向の挟持圧力を加えて最終製品形状を閉塞圧延転造す
るローリングマシン(11)とからなる。
In the apparatus of the present invention, as shown in FIG. 2, the billet (b1) is heated in the induction heating furnace (3) at a predetermined temperature (for example,
1250 ° C.), and this is upset into a disc-shaped blank (b2) with an upsetting punch (4) and a die (5), and then a diameter smaller than the inner and outer diameter dimensions of the final product (c). A stepped bottomed cylindrical intermediate product blank (b3) is molded by a molding punch (6) and a die (7), and this blank (b
3) Bottom punching punch (8) and die (9)
A forging press (10) for punching with a die to form a stepped bottomless cylindrical forging blank (b4) having a diameter smaller than the inner and outer diameters of the final product (c), and the final product (c) as shown in FIG. Between the outer peripheral shaping ring (1) having the same outer peripheral shape as the inner peripheral surface and the mandrel (2) having the same outer peripheral shape as the inner peripheral shape of the final product (c). A rolling machine (11) for sandwiching the forged blank (b4) formed in the pressing step, regulating the axial dimension and applying radial sandwiching pressure to the forged blank (b4) to close and roll the final product shape. Consists of.
【0010】鍛造プレス(10)は、各ポンチ及びダイ
スを等間隔で設置し、その成形動作を同調連動して行う
ように構成され、トランスファフィーダ(図示省略)に
より、鍛造対象品を各ポンチ及びダイスの加工位置へ順
次供給する構成とされている。
The forging press (10) is constructed so that the punches and dies are installed at equal intervals and the molding operation is performed in synchronization with each other. The structure is such that the dies are sequentially supplied to the processing position.
【0011】ローリングマシン(11)は、図3に示す
ように、外周整形リング(1)と、マンドレル(2)
と、ノックアウト(12)とを主要構成部材としてお
り、これらの具体的構成を図3〜図5で説明する。外周
整形リング(1)は、主ロール(13)に固着され、こ
の主ロール(13)は、ロール支持体(14)に回転駆
動可能に支持され、ロール支持体(14)は固定基台
(15)に外周整形リング(1)の径方向に水平摺動可
能に支持され、かつ、固定基台(15)とロール支持体
(14)との間に設置された径方向押圧力付与手段(1
6)により外周整形リング(1)の径方向に水平摺動さ
せて径方向の押圧力を付与する構成とされている。マン
ドレル(2)は、マンドレル支持体(17)に上端を回
転自在に支持され、マンドレル支持体(17)は回動ア
ーム(18)の先端に固着され、回動アーム(18)は
固定基台(15)に枢軸(19)を介して上下方向に回
動可能に支持され、かつ、固定基台(15)と回動アー
ム(18)との間に設置された回動付与手段(20)に
より、上方の退避位置と下方の加工位置とに選択回動せ
しめられ、それぞれの位置で位置決め保持される。ノッ
クアウト(12)は、ロール支持体(14)の下部に昇
降手段(21)を介して昇降可能に設置され、転造対象
物の転造中、マンドレル(2)の下端を案内支持する案
内孔(12a)を有する。図5において、(22)は鍛
造ブランク(b4)の搬入コンベア、(23)は搬入手
段、(24)は搬出手段、(25)は搬出コンベアを示
している。
As shown in FIG. 3, the rolling machine (11) includes an outer peripheral shaping ring (1) and a mandrel (2).
And the knockout (12) as main constituent members, and their concrete structures will be described with reference to FIGS. 3 to 5. The outer peripheral shaping ring (1) is fixed to a main roll (13), the main roll (13) is rotatably supported by a roll support (14), and the roll support (14) is fixed to a fixed base ( (15) is supported by the outer peripheral shaping ring (1) so as to be horizontally slidable in the radial direction, and is provided between the fixed base (15) and the roll support (14) in a radial pressing force applying means ( 1
According to 6), the outer peripheral shaping ring (1) is horizontally slid in the radial direction to apply a pressing force in the radial direction. The mandrel (2) is rotatably supported at its upper end by a mandrel support (17), the mandrel support (17) is fixed to the tip of a rotating arm (18), and the rotating arm (18) is a fixed base. A rotation imparting means (20) which is rotatably supported by the (15) via a pivot (19) in a vertical direction and which is installed between the fixed base (15) and the rotation arm (18). As a result, it is selectively rotated between the upper retracted position and the lower processing position, and is positioned and held at each position. The knockout (12) is installed in the lower part of the roll support (14) so as to be able to move up and down through the elevating means (21), and guides and supports the lower end of the mandrel (2) during rolling of the rolling object. (12a). In FIG. 5, (22) is a carry-in conveyor for the forging blank (b4), (23) is a carry-in means, (24) is a carry-out means, and (25) is a carry-out conveyor.
【0012】本発明のローリングマシン(11)は上記
構成からなり、次に動作を説明する。先ず、鍛造プレス
(10)とローリングマシン(11)とが連続ラインで
構成されている場合では、熱間鍛造された鍛造ブランク
(b4)の余熱を利用し、そのまま、或いは誘導加熱炉
で若干加熱して所定温度(例えば、950℃)とし、外
周整形リング(1)に搬入装着する。鍛造プレス(1
0)とローリングマシン(11)とが不連続である場合
では、誘導加熱炉で前記温度に加熱して外周整形リング
(1)に搬入装着する。この時、マンドレル(2)は上
方へ退避せしめられており、鍛造ブランク(b4)の外
周整形リング(1)への搬入装着が終了すると、前記マ
ンドレル(2)が下方の加工位置へ移動せしめられる。
そして、主ロール(13)の径方向の移動が行われ、外
周整形リング(1)とマンドレル(2)とで鍛造ブラン
ク(b4)を挟持し、主ロール(13)が回転せしめら
れる。これにより、鍛造ブランク(b4)は、外周整形
リング(1)と一体的に回転し、その間に外周整形リン
グ(1)の押圧力でマンドレル(2)に圧接される結果
(マンドレルは従動回転)、次第に拡径され、やがて、
外周整形リング(1)の内周面の直径及び形状と同一に
される。この状態になると、加工完了となり、主ロール
(13)の回転が停止され、マンドレル(2)が上方へ
退避せしめられ、ノックアウト(12)が上昇して、最
終製品(c)を外周整形リング(1)から押し出す。こ
れを搬出手段(24)で搬出し、搬出コンベア(25)
で後処理工程へ送る。以後、上記動作を繰り返す。な
お、鍛造ブランク(b4)は、図6に示すように、外周
面の段部形成位置付近に山形凸部(b4’)が形成して
あり、内周面には、上向きの抜き勾配が付けてある。ま
た、外周整形リング(1)の内周面の形状は、最終製品
(c)の外周面形状に一致せしめられ、所定位置に環状
段部(1a)が形成され、かつ、若干上向きの抜き勾配
が付与されている。そして、マンドレル(2)は、最終
製品(c)の内周面形状に一致せしめられ、上方より第
1〜第4成形面(2a)〜(2d)が環状に形成されて
おり、両端部には、最終製品(c)の軸方向端面を形成
規制する環状鍔部(2e)(2f)が形成されている。
The rolling machine (11) of the present invention has the above construction, and its operation will be described below. First, in the case where the forging press (10) and the rolling machine (11) are configured in a continuous line, the residual heat of the hot forged forging blank (b4) is used as it is or slightly heated in an induction heating furnace. Then, the temperature is set to a predetermined temperature (for example, 950 ° C.), and the outer peripheral shaping ring (1) is loaded and mounted. Forging press (1
0) and the rolling machine (11) are discontinuous, they are heated to the above temperature in an induction heating furnace and loaded and mounted on the outer peripheral shaping ring (1). At this time, the mandrel (2) is retracted upward, and when the loading and mounting of the forging blank (b4) to the outer peripheral shaping ring (1) is completed, the mandrel (2) is moved to the lower processing position. .
Then, the main roll (13) is moved in the radial direction, the outer peripheral shaping ring (1) and the mandrel (2) hold the forged blank (b4), and the main roll (13) is rotated. As a result, the forged blank (b4) rotates integrally with the outer peripheral shaping ring (1), and is pressed against the mandrel (2) by the pressing force of the outer peripheral shaping ring (1) during that time (the mandrel is driven to rotate). The diameter gradually increased, and eventually
The diameter and shape of the inner peripheral surface of the outer peripheral shaping ring (1) are made the same. In this state, the processing is completed, the rotation of the main roll (13) is stopped, the mandrel (2) is retracted upward, the knockout (12) is raised, and the final product (c) is shaped into an outer peripheral shaping ring ( Push out from 1). This is carried out by the carry-out means (24), and carried-out conveyor (25)
And send it to the post-treatment process. After that, the above operation is repeated. As shown in FIG. 6, the forged blank (b4) has a mountain-shaped convex portion (b4 ′) formed near the step forming position on the outer peripheral surface, and an upward draft is formed on the inner peripheral surface. There is. Moreover, the shape of the inner peripheral surface of the outer peripheral shaping ring (1) is made to match the outer peripheral surface shape of the final product (c), the annular step portion (1a) is formed at a predetermined position, and the draft is slightly upward. Is given. Then, the mandrel (2) is made to match the shape of the inner peripheral surface of the final product (c), and the first to fourth molding surfaces (2a) to (2d) are formed in an annular shape from above, and both ends are formed. Are formed with annular collar portions (2e) (2f) that regulate the formation of the end surface in the axial direction of the final product (c).
【0013】上記実施例は、外周整形リング(1)を回
転させ、かつ、径方向に押圧移動させ、マンドレル
(2)を定位置に停止保持させて従動回転可能とした場
合を示しているが、これに制約されるものではない。ま
た、最終製品(c)の軸方向端面を形成規制する手段を
マンドレル(2)に一体的に設けた場合を示している
が、これも、外周整形リング(1)側に設けてもよく、
また、これらとは別体とし、軸方向に加圧させるように
してもよい。
The above embodiment shows the case where the outer peripheral shaping ring (1) is rotated and pressed in the radial direction, and the mandrel (2) is stopped and held at a fixed position so that the mandrel (2) can be driven and rotated. , Not limited to this. Further, the case where the means for restricting the formation of the axial end surface of the final product (c) is integrally provided on the mandrel (2) is shown, but this may also be provided on the outer peripheral shaping ring (1) side,
Alternatively, they may be separated from each other and may be pressed in the axial direction.
【0014】[0014]
【発明の効果】本発明によれば、設備費及びランニング
コストを削減し、後加工の取り代を減少させて製造コス
トを極力低減させ得る段付き円筒状部品の製造方法及び
装置を提供することができる。
According to the present invention, there is provided a method and an apparatus for manufacturing a stepped cylindrical part capable of reducing the equipment cost and running cost, reducing the machining allowance for post-processing, and reducing the manufacturing cost as much as possible. You can
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の方法を示す工程説明図。FIG. 1 is a process explanatory view showing a method of the present invention.
【図2】本発明における鍛造プレスの概略説明図。FIG. 2 is a schematic explanatory view of a forging press according to the present invention.
【図3】本発明におけるローリングマシンの概略説明
図。
FIG. 3 is a schematic explanatory view of a rolling machine according to the present invention.
【図4】本発明におけるローリングマシンの側面図。FIG. 4 is a side view of the rolling machine according to the present invention.
【図5】本発明におけるローリングマシンの平面図。FIG. 5 is a plan view of a rolling machine according to the present invention.
【図6】本発明におけるローリング加工状態の説明図。FIG. 6 is an explanatory view of a rolling processing state in the present invention.
【図7】従来の製造方法の工程説明図。FIG. 7 is a process explanatory view of a conventional manufacturing method.
【符号の説明】[Explanation of symbols]
b4 鍛造ブランク c 最終製品 1 外周整形リング 2 マンドレル 10 鍛造プレス 11 ローリングマシン b4 Forged blank c Final product 1 Peripheral shaping ring 2 Mandrel 10 Forging press 11 Rolling machine

Claims (2)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】 ビレットを誘導加熱炉で所定温度に加熱
    し、据え込みポンチとダイスで円板状のブランクに据え
    込みし、次に、最終製品の内外径寸法よりも小径の成形
    ポンチとダイスで段付き有底円筒形状の中間品ブランク
    を成形し、このブランクの底部を底部打ち抜きポンチと
    ダイスで打ち抜いて最終製品の内外径寸法よりも小径で
    段付き無底円筒状の鍛造ブランクを成形する鍛造プレス
    工程と、 最終製品の外周形状と同一の形状を内周面に形成した外
    周整形リングと、最終製品の内周形状と同一の形状を外
    周面に形成したマンドレルとの間に鍛造プレス工程で成
    形した鍛造ブランクを挟持し、軸方向寸法を規制して該
    鍛造ブランクに径方向の挟持圧力を加えて最終製品形状
    を閉塞圧延転造する工程とからなることを特徴とする段
    付き円筒状部品の製造方法。
    1. A billet is heated to a predetermined temperature in an induction heating furnace, and is upset into a disk-shaped blank by an upsetting punch and a die, and then a forming punch and die having a diameter smaller than the inner and outer diameter dimensions of the final product. Form a stepped bottomed cylindrical intermediate product blank with a step, and punch the bottom of this blank with a bottom punch and die to form a stepped bottomless cylindrical forged blank with a diameter smaller than the inner and outer diameter dimensions of the final product. Between the forging press step, the outer peripheral shaping ring that has the same outer peripheral shape as the final product on the inner peripheral surface, and the mandrel that has the same outer peripheral shape as the final product on the outer peripheral surface. The stepped cylinder is characterized in that it comprises a step of sandwiching the forged blank formed in 1., applying a clamping force in the radial direction to the forged blank by controlling the axial dimension, and closing and rolling the final product shape. Method of manufacturing the parts.
  2. 【請求項2】 ビレットを誘導加熱炉で所定温度に加熱
    し、据え込みポンチとダイスで円板状のブランクに据え
    込みし、次に、最終製品の内外径寸法よりも小径の成形
    ポンチとダイスで段付き有底円筒形状の中間品ブランク
    を成形し、このブランクの底部を底部打ち抜きポンチと
    ダイスで打ち抜いて最終製品の内外径寸法よりも小径で
    段付き無底円筒状の鍛造ブランクを成形する鍛造プレス
    と、 最終製品の外周形状と同一の形状を内周面に形成した外
    周整形リングと、最終製品の内周形状と同一の形状を外
    周面に形成したマンドレルとを備え、これらの外周整形
    リングとマンドレルとの間に前記鍛造ブランクを挟持
    し、軸方向寸法を規制して該鍛造ブランクに径方向の挟
    持圧力を加えて最終製品形状を閉塞圧延転造するローリ
    ングマシンとからなることを特徴とする段付き円筒状部
    品の製造装置。
    2. A billet is heated to a predetermined temperature in an induction heating furnace, and is upset into a disc-shaped blank by an upsetting punch and a die, and then a forming punch and die having a diameter smaller than the inner and outer diameter dimensions of the final product. Form a stepped bottomed cylindrical intermediate product blank with a step, and punch the bottom of this blank with a bottom punch and die to form a stepped bottomless cylindrical forged blank with a diameter smaller than the inner and outer diameter dimensions of the final product. It is equipped with a forging press, an outer peripheral shaping ring that has the same shape as the outer peripheral shape of the final product on the inner peripheral surface, and a mandrel that has the same outer peripheral shape as the inner peripheral shape of the final product. A rolling machine that clamps the forged blank between a ring and a mandrel, regulates the axial dimension and applies a clamping pressure in the radial direction to the forged blank to close and roll the final product shape. Stepped cylindrical component manufacturing apparatus characterized by comprising.
JP6427194A 1994-04-01 1994-04-01 Method and device for manufacturing stepped cylindrical part Expired - Lifetime JP2507868B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6427194A JP2507868B2 (en) 1994-04-01 1994-04-01 Method and device for manufacturing stepped cylindrical part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6427194A JP2507868B2 (en) 1994-04-01 1994-04-01 Method and device for manufacturing stepped cylindrical part

Publications (2)

Publication Number Publication Date
JPH07275990A JPH07275990A (en) 1995-10-24
JP2507868B2 true JP2507868B2 (en) 1996-06-19

Family

ID=13253387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6427194A Expired - Lifetime JP2507868B2 (en) 1994-04-01 1994-04-01 Method and device for manufacturing stepped cylindrical part

Country Status (1)

Country Link
JP (1) JP2507868B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4328847B2 (en) 2003-11-25 2009-09-09 株式会社デンソー Method for manufacturing cylindrical member
WO2008041406A1 (en) * 2006-10-03 2008-04-10 Seiko Instruments Inc. Blank of bearing ring member, process for manufacturing the same, process for manufacturing bearing ring member, and bearing
CN102189206B (en) * 2011-03-01 2012-11-28 湖北巨力锻造有限公司 Forging technology of cylinder lifting lug of automobile
CN103521674A (en) * 2013-09-26 2014-01-22 贵州航宇科技发展股份有限公司 Method for manufacturing box shell of large special-shaped low-pressure turbine used for aircraft engine
WO2016027871A1 (en) 2014-08-22 2016-02-25 日本精工株式会社 Method of manufacturing ring-like member and manufacturing apparatus for same
CN105964872A (en) * 2016-07-19 2016-09-28 苏州誉衡昌精密机械有限公司 Forging technology for circular ring products
CN106964733B (en) * 2017-05-27 2019-04-19 中国第二重型机械集团德阳万航模锻有限责任公司 Annular special process for manufacturing forging

Also Published As

Publication number Publication date
JPH07275990A (en) 1995-10-24

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