JP2002346678A - Closed forging machine - Google Patents

Closed forging machine

Info

Publication number
JP2002346678A
JP2002346678A JP2001153607A JP2001153607A JP2002346678A JP 2002346678 A JP2002346678 A JP 2002346678A JP 2001153607 A JP2001153607 A JP 2001153607A JP 2001153607 A JP2001153607 A JP 2001153607A JP 2002346678 A JP2002346678 A JP 2002346678A
Authority
JP
Japan
Prior art keywords
holder
die
upper die
base
holder base
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.)
Granted
Application number
JP2001153607A
Other languages
Japanese (ja)
Other versions
JP3400791B2 (en
Inventor
Fujio Sunami
不二夫 角南
Tadashi Okumura
正 奥村
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.)
GOOSHUU KK
YAMANAKA GOOKIN KK
Gohsyu Corp
Yamanaka Engineering Co Ltd
Original Assignee
GOOSHUU KK
YAMANAKA GOOKIN KK
Gohsyu Corp
Yamanaka Engineering Co 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 GOOSHUU KK, YAMANAKA GOOKIN KK, Gohsyu Corp, Yamanaka Engineering Co Ltd filed Critical GOOSHUU KK
Priority to JP2001153607A priority Critical patent/JP3400791B2/en
Publication of JP2002346678A publication Critical patent/JP2002346678A/en
Application granted granted Critical
Publication of JP3400791B2 publication Critical patent/JP3400791B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a closed forging machine which has a simple structure capable of sufficiently supporting heavy loading, and which can produce a high quality forged part. SOLUTION: The closed forging machine is equipped with an upper die holder 1 and a lower die holder 2, respectively comprising a holder base 5 installed on a pressing machine, a die pin 6 placed on the holder base 5 in the vertical direction, a holder 4 to hold a die 3, which is installed on the holder base 5 and capable of sliding up and down against the die pin 6, and a launching device 7 installed between the holder 4 and the holder base 5. The launching power of the launching device 7 of the upper die holder 1 is set at the same or slightly stronger level than that of the launching device 7 of the lower die holder 2. A spacer 10 is set up between the holder base 5 and the holder 4 of the lower die holder 2 so as to control the descending movement of the holder 4, while a descending position of the holder base 5 of the upper die holder 1 is adjusted by the pressing machine.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、閉塞鍛造装置に関
する。
The present invention relates to a closed forging device.

【0002】[0002]

【従来の技術】従来、プレス機によって1工程で素材を
複雑な形状に成形する場合、閉塞鍛造成形(複動鍛造成
形)が行われている。この閉塞鍛造成形では、図11に示
すように、プレス機に夫々対向して配設される上ダイホ
ルダa・下ダイホルダbを備えた閉塞鍛造装置が用いら
れる。この閉塞鍛造装置は、プレス時に於て、図11
(イ)(ロ)に示す如く、上ホルダ本体cと下ホルダ本
体dの下降速度v2 を、プレス機に取付けられた上ホル
ダベースeの下降速度v1 の1/2 にするよう、例えばシ
ーソー式やテコ式の同期機構fが設けられている。
2. Description of the Related Art Conventionally, when a material is formed into a complicated shape in one step by a press machine, closed forging (double-acting forging) is performed. In this closed forging, as shown in FIG. 11, a closed forging apparatus having an upper die holder a and a lower die holder b disposed opposite to a press machine is used. This closed forging device, during pressing,
(B) as shown in (b), the lowering speed v 2 of the upper holder body c and the lower holder body d, to the half of the lowering speed v 1 of the holder base e on attached to the press, for example, A seesaw-type or lever-type synchronization mechanism f is provided.

【0003】図示の同期機構fは、下ホルダベースgの
上面に設けられた凹部hを有する固定部材iと、一端が
上記凹部hに摺動自在に嵌合しかつ中間部が下ホルダ本
体d内に枢着されて上下揺動可能に設けられたテコ部材
jと、上ホルダベースeの下面に垂設されて上記テコ部
材jの他端を押圧する押圧ロッドkとを備え、上ホルダ
ベースeが下降することにより押圧ロッドkがテコ部材
jの他端を押下げ、それによってテコ部材jが揺動しつ
つ下ホルダ本体dを押下げるように構成されている。
The illustrated synchronous mechanism f has a fixing member i having a concave portion h provided on the upper surface of a lower holder base g, one end slidably fitted into the concave portion h, and an intermediate portion having a lower holder body d. A lever member j which is pivotally mounted inside and is capable of swinging up and down, and a pressing rod k which is vertically provided on a lower surface of the upper holder base e and presses the other end of the lever member j, and comprises an upper holder base. When e moves down, the pressing rod k pushes down the other end of the lever member j, whereby the lever member j swings and pushes down the lower holder body d.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、この同
期機構fは、テコ部材jの一端と固定部材iの凹部hと
の摺動部分、テコ部材jの他端と押圧ロッドkとの摺動
部分、テコ部材jの中間部と下ホルダ本体dとの摺動部
分など、摺動部分が複数箇所存在するため、部品の消耗
や何らかのトラブルで大きな荷重が生じたときに同期機
構fに過負荷が掛かり、破損に結びつき易いという問題
があった。また、構造が複雑で作製に高精度を要し、コ
ストが高く付くという問題もあった。
However, the synchronous mechanism f is provided with a sliding portion between one end of the lever member j and the concave portion h of the fixing member i and a sliding portion between the other end of the lever member j and the pressing rod k. Since there are a plurality of sliding portions such as a sliding portion between the intermediate portion of the lever member j and the lower holder body d, an overload is applied to the synchronization mechanism f when a large load occurs due to wear of parts or some trouble. There was a problem that it was easy to cause damage. There is also a problem that the structure is complicated, high precision is required for the production, and the cost is high.

【0005】そこで、本発明は、上述の問題を解決し、
大きな荷重にも十分耐え得る簡素な構造であり、かつ、
高品質の成形品を形成できる閉塞鍛造装置を提供するこ
とを目的とする。
Therefore, the present invention solves the above-mentioned problem,
It has a simple structure that can withstand large loads, and
An object of the present invention is to provide a closed forging device capable of forming a high quality molded product.

【0006】[0006]

【課題を解決するための手段】上述の目的を達成するた
めに、本発明に係る閉塞鍛造装置は、プレス機に取付け
られるホルダベースと、該ホルダベースに設けられた上
下方向のダイピンと、該ダイピンに対して上下スライド
自在に上記ホルダベースに取付けられた金型保持用のホ
ルダ本体と、該ホルダ本体と上記ホルダベースの間に設
けられた弾発機構とを、夫々有する上ダイホルダ・下ダ
イホルダを備え、該上ダイホルダの上記弾発機構の弾発
力が該下ダイホルダの弾発機構の弾発力に比して同じ若
しくは僅かに大きく設定されると共に、下ダイホルダの
上記ホルダベースと上記ホルダ本体の間にスペーサが配
設されて該ホルダ本体の下降動作が規制され、かつ、上
ダイホルダの上記ホルダベースの下降位置が上記プレス
機にて調整されるものである。
In order to achieve the above object, a closed forging apparatus according to the present invention comprises a holder base mounted on a press, a vertical die pin provided on the holder base, and An upper die holder and a lower die holder each having a mold body for holding a mold attached to the holder base so as to be vertically slidable with respect to the die pin, and a resilient mechanism provided between the holder body and the holder base. Wherein the resilient force of the resilient mechanism of the upper die holder is set to be equal to or slightly larger than the resilient force of the resilient mechanism of the lower die holder, and the holder base of the lower die holder and the holder A spacer is provided between the main bodies to restrict the lowering operation of the holder main body, and the lowering position of the holder base of the upper die holder is adjusted by the press machine. Than it is.

【0007】このとき、スペーサが高さ調整自在であ
る。また、上ダイホルダの弾発機構の弾発力が下ダイホ
ルダの弾発機構の弾発力の1倍〜1.1 倍である。
At this time, the height of the spacer is adjustable. The resilience of the resilient mechanism of the upper die holder is 1 to 1.1 times that of the resilient mechanism of the lower die holder.

【0008】[0008]

【発明の実施の形態】以下、実施の形態を示す図面に基
づき、本発明を詳説する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

【0009】図1は、本発明に係る閉塞鍛造装置の実施
の一形態を示す。この閉塞鍛造装置は、プレス機に夫々
対向して配設される上ダイホルダ1・下ダイホルダ2を
備える。この上ダイホルダ1・下ダイホルダ2は、プレ
ス機に取付けられるホルダベース5と、ホルダベース5
に設けられた上下方向のダイピン6と、ダイピン6に対
して上下スライド自在にホルダベース5に取付けられた
金型3保持用のホルダ本体4と、ホルダ本体4とホルダ
ベース5の間に設けられた弾発機構7とを、夫々有して
いる。
FIG. 1 shows an embodiment of a closed forging apparatus according to the present invention. This closed forging device includes an upper die holder 1 and a lower die holder 2 which are disposed to face a press machine, respectively. The upper die holder 1 and the lower die holder 2 include a holder base 5 attached to a press machine and a holder base 5.
And a holder body 4 for holding the mold 3 attached to the holder base 5 so as to be vertically slidable with respect to the die pin 6, and provided between the holder body 4 and the holder base 5. , Respectively.

【0010】具体的に説明すると、上ホルダ本体4aの
下面中央部には、上型3aを挿嵌するための凹部が形成
され、さらに上型3aと上ホルダ本体4aを貫通して上
ダイピン6aを挿通させる中心孔部8が形成されてい
る。これと同様に、下ホルダ本体4bの上面中央部に
は、下型3bを挿嵌するための凹部が形成され、さらに
下型3bと下ホルダ本体4bを貫通して下ダイピン6b
を挿通させる中心孔部9が形成されている。
More specifically, a concave portion for inserting the upper die 3a is formed at the center of the lower surface of the upper holder main body 4a, and the upper die pin 6a penetrates through the upper die 3a and the upper holder main body 4a. Are formed in the center hole 8. Similarly, at the center of the upper surface of the lower holder main body 4b, a concave portion for inserting the lower die 3b is formed, and the lower die pin 6b penetrates the lower die 3b and the lower holder main body 4b.
Is formed in the center hole 9.

【0011】また、上ホルダ本体4aは、複数組の弾発
機構7a…を介して、弾発機構7aの撓み代となる隙間
1 を設けて上ホルダベース5aに取付けられると共
に、下ホルダ本体4bは、複数組の弾発機構7b…を介
して、弾発機構7bの撓み代となる隙間C2 を設けて下
ホルダベース5bに取付けられている。例えば、ボルト
部材等にて上ホルダ本体4a・下ホルダ本体4bを隙間
1 ,C2 だけ上下可能として上ホルダベース5a・下
ホルダベース5bに取付ける。なお、複数組の弾発機構
7a…,7b…は、金型3の周囲に対称に配設される。
Further, the upper holder body 4a via a plurality of sets of resilient mechanisms 7a ..., with mounted on the holder base 5a by a gap C 1 serving as the flexure length of the resilient mechanisms 7a, the lower holder body 4b, a plurality of sets of resilient mechanism 7b ... through, is attached to the lower holder base 5b by a gap C 2 as the flexure length of the elastic mechanism 7b. For example, attaching the upper holder body 4a · lower holder body 4b in the upper holder base 5a · lower holder base 5b as only a vertically clearance C 1, C 2 in bolt members or the like. .., 7b... Are arranged symmetrically around the mold 3.

【0012】また、弾発機構7としては、例えば、複数
枚の皿バネを、ボルト部材にて上ホルダベース5a・下
ホルダベース5bに取付けた皿バネ保持体に挿嵌するこ
とにより、同心状に積層して構成される皿バネ機構など
を採用することができる。このとき、上ダイホルダ1の
弾発機構7(7a)の弾発力は下ダイホルダ2の弾発機
構7(7b)の弾発力に比して、同じ若しくは僅かに大
きく設定される。具体的には、上ダイホルダ1の弾発機
構7aの弾発力は下ダイホルダ2の弾発機構7bの弾発
力の1倍〜1.1 倍に設定される。
Further, as the resilient mechanism 7, for example, a plurality of disc springs are concentrically inserted by being inserted into a disc spring holder attached to the upper holder base 5a and the lower holder base 5b with bolt members. A disc spring mechanism or the like configured by laminating the components can be adopted. At this time, the elastic force of the elastic mechanism 7 (7a) of the upper die holder 1 is set to be equal to or slightly larger than the elastic force of the elastic mechanism 7 (7b) of the lower die holder 2. Specifically, the resilience of the resilient mechanism 7a of the upper die holder 1 is set to be 1 to 1.1 times the resilience of the resilient mechanism 7b of the lower die holder 2.

【0013】また、下ダイホルダ2の下ホルダベース5
bと下ホルダ本体4bの間には、単一厚みのスペーサ10
が配設される。即ち、下ホルダベース5bの上面11、又
は、下ホルダ本体4bの下面12に、スペーサ10が付設さ
れる。本実施の形態では、所定厚さ寸法Tの円環状のス
ペーサ10を、下ダイピン6bを中心として下ホルダベー
ス5bの上面11に取付けた場合を例示している。
The lower die base 2 has a lower holder base 5.
b and the lower holder main body 4b, a spacer 10 having a single thickness is provided.
Is arranged. That is, the spacer 10 is attached to the upper surface 11 of the lower holder base 5b or the lower surface 12 of the lower holder main body 4b. In the present embodiment, an example is shown in which an annular spacer 10 having a predetermined thickness T is mounted on the upper surface 11 of the lower holder base 5b around the lower die pin 6b.

【0014】ところで、金型3に於て、上型3aの下面
及び下型3bの上面には、上記中心孔部8,9に連通す
る所定形状(図例では十文字状)の成形型部13,14が設
けられている。図5と図6(ニ)に示すように、上記ス
ペーサ10は、成形終了時に下ダイピン6bの上端面16が
下型3bの成形型部14の入り口に達したところで下ホル
ダ本体4bの下降動作を規制する(当止めして下死点に
位置決めする)ためのものである。このとき、上ダイピ
ン6aの下端面17が上型3aの成形型部13の入り口に達
したところが上ホルダベース5aの下死点となるよう、
プレス機の動作が予め調整される。これについて詳しく
は後述する。
Incidentally, in the mold 3, the lower surface of the upper die 3a and the upper surface of the lower die 3b are provided with a molding die portion 13 of a predetermined shape (cross-shaped in the illustrated example) communicating with the center holes 8 and 9. , 14 are provided. As shown in FIGS. 5 and 6 (d), when the upper end face 16 of the lower die pin 6b reaches the entrance of the molding die portion 14 of the lower die 3b at the end of molding, the spacer 10 moves down the lower holder body 4b. (To stop and position at the bottom dead center). At this time, the position where the lower end face 17 of the upper die pin 6a reaches the entrance of the molding die portion 13 of the upper die 3a becomes the lower dead point of the upper holder base 5a.
The operation of the press is adjusted in advance. This will be described later in detail.

【0015】次に、本発明の閉塞鍛造装置の動作・作用
について説明する。図1に示すように、先ず下型3bの
中心孔部9に(円柱状の)素材15をセットするが、この
とき、上ダイホルダ1と下ダイホルダ2とは所定間隔離
間した状態にある。素材15のセット後、プレス機を作動
させることにより、図2及び図6(イ)に示すように、
上ダイホルダ1が下降して上型3aが下型3bに接触す
ると共に、上ダイピン6aと下ダイピン6bとで素材15
が挾持される。
Next, the operation and action of the closed forging device of the present invention will be described. As shown in FIG. 1, first, a (cylindrical) material 15 is set in the center hole 9 of the lower die 3b. At this time, the upper die holder 1 and the lower die holder 2 are separated from each other by a predetermined distance. After setting the material 15, by operating the press machine, as shown in FIG. 2 and FIG.
The upper die holder 1 descends and the upper die 3a comes into contact with the lower die 3b, and the upper die pin 6a and the lower die pin 6b hold the material 15 together.
Is pinched.

【0016】そして、さらに上ダイホルダ1が下降する
と、図3と図6(ロ)に示すように、上ダイピン6aが
下ダイピン6bへ接近して素材15を圧縮していく。この
とき、上型3aと下型3bとが接触していることから、
上ホルダ本体4aと下ホルダ本体4bとが等速度で下降
し、上ホルダ本体4aと上ホルダベース5aとの隙間C
1 及び下ホルダ本体4bと下ホルダベース5bとの隙間
2 が縮んでいくが、(上述の如く)上ダイホルダ1側
の弾発機構7aが下ダイホルダ2側の弾発機構7bに比
して同じ若しくは僅かに大きい弾発力に設定されている
ため、下側の弾発機構7bの圧縮変形量が上側の弾発機
構7aの圧縮変形量よりも僅かに大きく、下側の隙間C
2 の減少量が上側の隙間C1 の減少量よりも僅かに大き
くなる。従って、金型分割面18は、上ダイピン6aの下
端面17と下ダイピン6bの上端面16との中間よりも僅か
に下ダイピン6b寄りとなる。
When the upper die holder 1 further descends, the upper die pin 6a approaches the lower die pin 6b and compresses the material 15 as shown in FIGS. 3 and 6 (b). At this time, since the upper mold 3a and the lower mold 3b are in contact,
The upper holder main body 4a and the lower holder main body 4b descend at a constant speed, and a gap C between the upper holder main body 4a and the upper holder base 5a.
1 and although the gap C 2 goes shrink the lower holder body 4b and the lower holder base 5b, (as described above) the resilient mechanism 7a of the upper die holder 1 side than the elastic mechanism 7b of the lower die holder 2 side Since the same or slightly larger resilient force is set, the amount of compressive deformation of the lower elastic mechanism 7b is slightly larger than the amount of compressive deformation of the upper elastic mechanism 7a, and the lower clearance C
Reduction of 2 is slightly larger than the decrease amount of the upper gap C 1. Accordingly, the mold dividing surface 18 is slightly closer to the lower die pin 6b than the middle between the lower end surface 17 of the upper die pin 6a and the upper end surface 16 of the lower die pin 6b.

【0017】そして、図4及び図6(ハ)に示すよう
に、さらに上ダイホルダ1が下降していくと、下ホルダ
本体4bの下面12がスペーサ10に突き当たり、下ホルダ
本体4b及び上ホルダ本体4aは下降を停止する。この
とき、(上述したように)下ダイピン6bの上端面16が
下型3bの成形型部14の入り口に達するが、上ダイピン
6aの下端面17は上型3aの成形型部13の入り口にまだ
達していない。
Then, as shown in FIGS. 4 and 6 (c), when the upper die holder 1 further descends, the lower surface 12 of the lower holder main body 4b abuts against the spacer 10, and the lower holder main body 4b and the upper holder main body 4b. 4a stops descending. At this time, the upper end surface 16 of the lower die pin 6b reaches the entrance of the molding die portion 14 of the lower die 3b (as described above), while the lower end surface 17 of the upper die pin 6a enters the entrance of the molding die portion 13 of the upper die 3a. Not yet reached.

【0018】その後、図5と図6(ニ)に示すように、
上ダイピン6aの下端面17が上型3aの成形型部13の入
り口まで下降したところで、プレス機の下降動作が停止
し、成形が終了する。即ち、素材15に於て上型3aの中
心孔部8に残っている少量部分19(図6(ハ)参照)が
上ダイピン6aにて成形型部13内へ押し込まれ、それに
よって最終形状の成形品20が形成される。この成形終了
時には、成形品20の上下厚みMの中間に金型分割面18が
位置した状態となっている。つまり、金型分割面18を基
準に、上側の厚みM1 と下側の厚みM2 が各々1/2 Mと
なる。なお、上述のように上下の弾発機構7a,7bは
弾発力(バネ定数)が異なるので、金型分割面18に対す
る上下ダイピン6a,6bの相対的な接近速度は異なる
───上ダイピン6aの方が僅かに遅い───が、微量
であるため製品(成形品20)の形状等の品質に異常は見
られない。
Thereafter, as shown in FIGS. 5 and 6 (d),
When the lower end face 17 of the upper die pin 6a is lowered to the entrance of the forming die portion 13 of the upper die 3a, the lowering operation of the press machine stops, and the forming is completed. That is, a small portion 19 (see FIG. 6 (c)) remaining in the center hole 8 of the upper die 3a in the material 15 is pushed into the molding die 13 by the upper die pin 6a, thereby forming the final shape. A molded product 20 is formed. At the end of the molding, the mold dividing surface 18 is located in the middle of the vertical thickness M of the molded product 20. That is, based on the mold parting surface 18, the thickness M 2 of the upper thickness M 1 and the lower side is respectively 1/2 M. As described above, since the upper and lower resilient mechanisms 7a and 7b have different resiliences (spring constants), the relative approach speeds of the upper and lower die pins 6a and 6b to the mold dividing surface 18 are different. 6a is slightly slower, but the amount is small, so that there is no abnormality in the quality of the product (molded product 20) such as the shape.

【0019】ところで、一般的に閉塞鍛造としては、金
型分割面に対して上下ダイピンが等速度で接近して素材
を圧縮変形するのが理想的であるが、各部のガタやバネ
定数の若干の違い、各部の弾性変形等が累積して、金型
分割面を基準とする成形品(鍛造品)の上下の厚みが1/
10mm単位で差異が生じているのが現実である。
Generally, in closed forging, it is ideal that the upper and lower die pins approach the mold dividing surface at a constant speed to compress and deform the material. Difference, the elastic deformation of each part accumulates, and the upper and lower thickness of the molded product (forged product) based on the mold split surface is 1 /
The reality is that there is a difference every 10mm.

【0020】そこで本発明は、あえて上ダイホルダ1側
の弾発機構7aの弾発力を下ダイホルダ2側の弾発機構
7bの弾発力に比して同じ若しくは僅かに大きく設定
し、成形の終了寸前に下ホルダ本体4bをスペーサ10に
突き当てて下降を停止させ、最終の(素材15の)少量部
分19の成形は上ホルダベース5a及び上ダイピン6aの
動きだけで完了させるように構成したことにより、(上
述した各部のガタ等の)累積誤差に関係なく、金型分割
面を基準とする成形品の上下の厚みを高い精度で等しく
することができる。このとき、(図4と図5に示すよう
に)下ホルダ本体4bがスペーサ10に当接した時に、金
型分割面18に対する下側の厚みM2 が決まるので、その
後、上ダイホルダ1をさらに下げて、M1 =M2 となる
ところが下死点となるようにプレス機を前もって調整す
る必要がある。
Therefore, in the present invention, the resilient force of the resilient mechanism 7a on the upper die holder 1 side is set to be equal to or slightly larger than the resilient force of the resilient mechanism 7b on the lower die holder 2 side. Immediately before the end, the lower holder body 4b is abutted against the spacer 10 to stop the lowering, and the final molding of the small amount 19 (of the material 15) is completed only by the movement of the upper holder base 5a and the upper die pin 6a. Thereby, the upper and lower thicknesses of the molded product with respect to the mold division surface can be equalized with high accuracy, regardless of the accumulated error (such as the play of each part described above). At this time, when (Fig. 4 and as shown in FIG. 5) of the lower holder body 4b is in contact with the spacer 10, since the thickness M 2 of the lower side with respect to the mold split plane 18 is determined, then the upper die holder 1 further It is necessary to adjust the press in advance so that the position where M 1 = M 2 becomes the bottom dead center.

【0021】なお、上ダイホルダ1の弾発機構7(7
a)の弾発力を下ダイホルダ2の弾発機構7(7b)の
弾発力と同じに設定した場合でも、実際には下ホルダ本
体4bや下型3b等の重量が下側の弾発機構7bに掛か
っているため、(上述したように)成形終了寸前に下ホ
ルダ本体4bがスペーサ10に当接して下降を停止し、そ
の後に上ダイピン6aが上記少量部分19を成形して成形
終了となる。反対に、上側の弾発機構7aの弾発力が下
側の弾発機構7bの弾発力よりも小さいと、下ホルダ本
体4bがスペーサ10に当接する前に上ダイピン6aが上
型3aの成形型部13内まで進入してしまい、成形品の形
状不良を生じてしまう。また、上側の弾発機構7aの弾
発力が下側の弾発機構7bの弾発力の1.1 倍を越える
と、下ホルダ本体4bがスペーサ10に当接した時点で、
上ダイピン6a側の素材15の変形量が下ダイピン6b側
の素材15の変形量に比して少な過ぎることとなり、最終
形状の成形品が形状不良になり易い。
The spring mechanism 7 (7) of the upper die holder 1
Even if the resilience of a) is set to be the same as the resilience of the resilience mechanism 7 (7b) of the lower die holder 2, the weight of the lower holder body 4b, the lower mold 3b, etc. is actually lower. Shortly before the end of molding (as described above), the lower holder main body 4b abuts on the spacer 10 and stops descending, and then the upper die pin 6a forms the small amount portion 19 and finishes molding. Becomes On the other hand, if the resilience of the upper resilient mechanism 7a is smaller than the resilience of the lower resilient mechanism 7b, the upper die pin 6a is moved to the upper die 3a before the lower holder body 4b contacts the spacer 10. It will enter the inside of the molding die portion 13, resulting in a defective shape of the molded product. When the elastic force of the upper elastic mechanism 7a exceeds 1.1 times the elastic force of the lower elastic mechanism 7b, when the lower holder body 4b contacts the spacer 10,
The amount of deformation of the material 15 on the upper die pin 6a side is too small compared to the amount of deformation of the material 15 on the lower die pin 6b side, and the molded product having the final shape is likely to be defective in shape.

【0022】また、厚みMの異なる各種の成形品20の成
形に対応できるように、スペーサ10は高さ調整自在なも
のとするも、好ましい。図7〜図10は、高さ調整自在な
各種のスペーサ10を示している。図7に示すスペーサ10
は、下ホルダベース5bの上面11に一対の固定部材21,
21を付設すると共に、下面に勾配面22を有する当接部材
23を固定部材21,21間に上下スライド自在に配設し、さ
らに、一方の固定部材21にて回転自在にシャフト24を保
持すると共に、ネジ孔25aを有しかつ上記勾配面22と摺
接する傾斜面26を有する楔部材25をシャフト24の先端ネ
ジ部24aに螺着することにより構成されており、シャフ
ト24を正・逆回転することにより楔部材25が水平方向に
移動し、それによって当接部材23が上下に移動して高さ
調整することができる。なお、このスペーサ10を下ホル
ダ本体4bの下面12に取付けることも可能である。この
場合、固定部材21,21の間から当接部材23が落下しない
ように保持する。
The spacer 10 is preferably adjustable in height so that it can be used to form various molded products 20 having different thicknesses M. 7 to 10 show various spacers 10 whose height can be adjusted. The spacer 10 shown in FIG.
A pair of fixing members 21 on the upper surface 11 of the lower holder base 5b.
21 is attached, and a contact member having a slope surface 22 on the lower surface.
23 is disposed between the fixing members 21 and 21 so as to be slidable up and down. Further, the shaft 24 is rotatably held by one of the fixing members 21 and has a screw hole 25a and slides on the inclined surface 22. It is configured by screwing a wedge member 25 having an inclined surface 26 to a distal end threaded portion 24a of the shaft 24. By rotating the shaft 24 forward and backward, the wedge member 25 moves in the horizontal direction. The contact member 23 can be moved up and down to adjust the height. The spacer 10 can be attached to the lower surface 12 of the lower holder main body 4b. In this case, the contact member 23 is held so as not to fall from between the fixing members 21.

【0023】次に図8のスペーサ10は、下ホルダベース
5bの上面11にボルト部材27を付設し、そのボルト部材
27の雄ネジ部にナット部材28(例えば袋ナット)を螺着
したものであり、ナット部材28を上下方向に螺進退させ
ることで高さ調整できる。なお、このスペーサ10を下ホ
ルダ本体4bの下面12に設けるようにしても良い。
Next, in the spacer 10 shown in FIG. 8, a bolt member 27 is attached to the upper surface 11 of the lower holder base 5b.
A nut member 28 (for example, a cap nut) is screwed onto the male screw portion 27, and the height can be adjusted by vertically reciprocating the nut member 28. The spacer 10 may be provided on the lower surface 12 of the lower holder main body 4b.

【0024】また図9のスペーサ10は、下ホルダベース
5bの上面11又は下ホルダ本体4bの下面12にネジ孔29
を形成し、そのネジ孔29にボルト部材30を螺着したもの
であり、ボルト部材30を上下方向に螺進退させることで
高さ(突出寸法)を調整する。
The spacer 10 shown in FIG. 9 has a screw hole 29 in the upper surface 11 of the lower holder base 5b or the lower surface 12 of the lower holder body 4b.
The bolt member 30 is screwed into the screw hole 29, and the height (projection dimension) is adjusted by vertically moving the bolt member 30 back and forth.

【0025】図10に示すスペーサ10は、対向面側に円環
状鋸歯部32,32を有する相対的に回動可能な上下一対の
リング部材31,31を備え、固定側のリング部材31(31
a)の外周縁に雄ネジ33を有するシャフト部材34を回転
自在に取付けると共に、回動側のリング部材31(31b)
の外周縁に上記雄ネジ33に螺合するネジ溝を形成し、シ
ャフト部材34を正・逆回転することにより回動側のリン
グ部材31bが回動し、上下の鋸歯部32,32が摺動して全
体の厚み(高さ)が調整できるものである。このスペー
サ10は、固定側のリング部材31aが、下ダイピン6bを
中心として下ホルダベース5bの上面11又は下ホルダ本
体4bの下面12に付設される(図1参照)。なお、上下
のリング部材31,31が分離しないよう図示省略の保持部
材にて保持されており、例えば中心孔部35に円筒状の保
持部材を固定側のリング部材31aと一体状として設ける
のも、好ましい。
The spacer 10 shown in FIG. 10 is provided with a pair of relatively rotatable upper and lower ring members 31, 31 having annular saw tooth portions 32, 32 on the opposing surface side, and the fixed side ring member 31 (31
A) a shaft member 34 having a male screw 33 is rotatably mounted on the outer peripheral edge of a), and the rotating side ring member 31 (31b)
A thread groove for screwing with the male screw 33 is formed on the outer peripheral edge of the shaft member. By rotating the shaft member 34 forward and backward, the rotating ring member 31b is rotated, and the upper and lower saw-tooth portions 32, 32 slide. It is possible to adjust the entire thickness (height) by moving. In the spacer 10, a fixed ring member 31a is attached to the upper surface 11 of the lower holder base 5b or the lower surface 12 of the lower holder main body 4b with the lower die pin 6b as a center (see FIG. 1). Note that the upper and lower ring members 31, 31 are held by a holding member (not shown) so as not to be separated. For example, a cylindrical holding member may be provided in the center hole 35 integrally with the fixed ring member 31a. ,preferable.

【0026】[0026]

【発明の効果】本発明は上述の如く構成されるので、次
に記載する効果を奏する。
Since the present invention is configured as described above, the following effects can be obtained.

【0027】(請求項1によれば)簡単な構造でありな
がら、金型分割面18を基準とする上下の厚みM1 ,M2
を高精度に等しくした(形状不良のない)品質の良好な
成形品20を得ることができる。また、本発明の閉塞鍛造
装置は、従来のような複雑な同期機構を省略した簡素な
構造であるため、大きな荷重にも十分耐え、長期間使用
でも故障や破損等が生じ難く、また装置本体の製作コス
トも低減される。
(According to claim 1) Although the structure is simple, the upper and lower thicknesses M 1 and M 2 with respect to the mold dividing surface 18 are used as a reference.
And a high quality molded product 20 (having no shape defect) with high precision can be obtained. In addition, the closed forging device of the present invention has a simple structure in which a complicated synchronization mechanism as in the related art is omitted, and thus sufficiently withstands a large load, hardly causes a failure or breakage even when used for a long period of time. Manufacturing costs are also reduced.

【0028】(請求項2によれば)厚み寸法Mの異なる
各種の成形品20の閉塞鍛造成形が可能となる。 (請求項3によれば)金型分割面18に対する上ダイピン
6aと下ダイピン6bの相対的な接近速度差を最小限に
設定することができ、形状等の品質に異常のない製品
(成形品20)を確実に形成することができる。
According to the second aspect, it is possible to perform closed forging of various molded products 20 having different thickness dimensions M. According to the third aspect, it is possible to minimize the difference in the relative approach speed between the upper die pin 6a and the lower die pin 6b with respect to the mold dividing surface 18, and to provide a product (molded product) having no abnormality in quality such as shape. 20) can be reliably formed.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る閉塞鍛造装置の実施の一形態を示
す断面正面図である。
FIG. 1 is a sectional front view showing an embodiment of a closed forging apparatus according to the present invention.

【図2】上ダイホルダが下降して上下ダイピンにて素材
を挾持した状態を示す半截断面図である。
FIG. 2 is a half sectional view showing a state where an upper die holder is lowered and a material is held between upper and lower die pins.

【図3】さらに上ダイホルダが下降して素材圧縮中の状
態を示す半截断面図である。
FIG. 3 is a half sectional view showing a state in which the upper die holder is further lowered and the material is being compressed.

【図4】さらに上ダイホルダが下降して下ホルダ本体が
スペーサに当接した状態を示す半截断面図である。
FIG. 4 is a half sectional view showing a state in which an upper die holder further descends and a lower holder main body contacts a spacer.

【図5】上ダイホルダの下降が停止した成形終了状態を
示す半截断面図である。
FIG. 5 is a half sectional view showing a molding end state in which the lowering of the upper die holder is stopped.

【図6】素材を閉塞鍛造成形していく状態を示す作用説
明図である。
FIG. 6 is an operation explanatory view showing a state in which a material is being closed forged.

【図7】高さ調整自在なスペーサを示す要部断面正面図
である。
FIG. 7 is a sectional front view of a main part showing a spacer whose height is adjustable.

【図8】高さ調整自在な他のスペーサを示す要部断面正
面図である。
FIG. 8 is a sectional front view of a main part showing another spacer whose height is adjustable.

【図9】高さ調整自在な別のスペーサを示す要部断面正
面図である。
FIG. 9 is a sectional front view of a main part showing another spacer whose height is adjustable.

【図10】高さ調整自在なさらに別のスペーサを示す要部
断面正面図である。
FIG. 10 is a sectional front view of a main part showing still another spacer whose height is adjustable.

【図11】従来例を示す作用説明図である。FIG. 11 is an operation explanatory view showing a conventional example.

【符号の説明】[Explanation of symbols]

1 上ダイホルダ 2 下ダイホルダ 3 金型 4 ホルダ本体 5 ホルダベース 6 ダイピン 7 弾発機構 10 スペーサ DESCRIPTION OF SYMBOLS 1 Upper die holder 2 Lower die holder 3 Die 4 Holder body 5 Holder base 6 Die pin 7 Resilient mechanism 10 Spacer

───────────────────────────────────────────────────── フロントページの続き (72)発明者 奥村 正 滋賀県甲賀郡石部町大字石部2190−5 株 式会社ゴーシュー内 Fターム(参考) 4E087 AA09 CA14 EC13 EC50 EC54 ────────────────────────────────────────────────── ─── Continued on front page (72) Inventor Tadashi Okumura 2190-5, Ishibe-cho, Ishibe-cho, Koka-gun, Shiga Prefecture F-term in Go-Shoe Co., Ltd. (Reference) 4E087 AA09 CA14 EC13 EC50 EC54

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 プレス機に取付けられるホルダベース
と、該ホルダベースに設けられた上下方向のダイピン
と、該ダイピンに対して上下スライド自在に上記ホルダ
ベースに取付けられた金型保持用のホルダ本体と、該ホ
ルダ本体と上記ホルダベースの間に設けられた弾発機構
とを、夫々有する上ダイホルダ・下ダイホルダを備え、
該上ダイホルダの上記弾発機構の弾発力が該下ダイホル
ダの弾発機構の弾発力に比して同じ若しくは僅かに大き
く設定されると共に、下ダイホルダの上記ホルダベース
と上記ホルダ本体の間にスペーサが配設されて該ホルダ
本体の下降動作が規制され、かつ、上ダイホルダの上記
ホルダベースの下降位置が上記プレス機にて調整される
ことを特徴とする閉塞鍛造装置。
1. A holder base mounted on a press machine, a vertical die pin provided on the holder base, and a holder body for holding a mold mounted on the holder base so as to be vertically slidable with respect to the die pin. And an upper die holder and a lower die holder, each having an elastic mechanism provided between the holder main body and the holder base,
The resilient force of the resilient mechanism of the upper die holder is set to be equal to or slightly larger than the resilient force of the resilient mechanism of the lower die holder, and the resilient force between the holder base of the lower die holder and the holder main body is set. A closed forging device, wherein a lowering operation of the holder main body is regulated by adjusting a lowering position of the holder base of the upper die holder by the press machine.
【請求項2】 スペーサが高さ調整自在である請求項1
記載の閉塞鍛造装置。
2. The height of the spacer is adjustable.
The closed forging device as described in the above.
【請求項3】 上ダイホルダの弾発機構の弾発力が下ダ
イホルダの弾発機構の弾発力の1倍〜1.1 倍である請求
項1又は2記載の閉塞鍛造装置。
3. The closed forging apparatus according to claim 1, wherein the elastic force of the elastic mechanism of the upper die holder is 1 to 1.1 times the elastic force of the elastic mechanism of the lower die holder.
JP2001153607A 2001-05-23 2001-05-23 Closed forging device Expired - Fee Related JP3400791B2 (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001153607A JP3400791B2 (en) 2001-05-23 2001-05-23 Closed forging device

Publications (2)

Publication Number Publication Date
JP2002346678A true JP2002346678A (en) 2002-12-03
JP3400791B2 JP3400791B2 (en) 2003-04-28

Family

ID=18998098

Family Applications (1)

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Country Status (1)

Country Link
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011036888A (en) * 2009-08-11 2011-02-24 Ito Seisakusho:Kk Double-acting forging method and double-acting forging device
CN103752751A (en) * 2014-01-23 2014-04-30 连云港宝石精密重工科技有限公司 Pre-forging die for forging aluminum alloy wheel
CN104525817A (en) * 2014-12-17 2015-04-22 浙江名将汽配有限公司 Cold-upsetting die for manufacturing flat-square double-end bolt
CN109967682A (en) * 2019-04-16 2019-07-05 江阴市劲松科技有限公司 A kind of novel forging equipment
CN113710390A (en) * 2019-04-26 2021-11-26 日立金属株式会社 Forging apparatus and method for manufacturing forged product

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CN105234332A (en) * 2015-11-12 2016-01-13 张家港市锦力标准件制造有限公司 Hot-forging die

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011036888A (en) * 2009-08-11 2011-02-24 Ito Seisakusho:Kk Double-acting forging method and double-acting forging device
CN103752751A (en) * 2014-01-23 2014-04-30 连云港宝石精密重工科技有限公司 Pre-forging die for forging aluminum alloy wheel
CN104525817A (en) * 2014-12-17 2015-04-22 浙江名将汽配有限公司 Cold-upsetting die for manufacturing flat-square double-end bolt
CN109967682A (en) * 2019-04-16 2019-07-05 江阴市劲松科技有限公司 A kind of novel forging equipment
CN113710390A (en) * 2019-04-26 2021-11-26 日立金属株式会社 Forging apparatus and method for manufacturing forged product
CN113710390B (en) * 2019-04-26 2024-05-03 株式会社博迈立铖 Forging apparatus and method for manufacturing forged product

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