JPS60227922A - Metallic die for rear extrusion - Google Patents

Metallic die for rear extrusion

Info

Publication number
JPS60227922A
JPS60227922A JP8483284A JP8483284A JPS60227922A JP S60227922 A JPS60227922 A JP S60227922A JP 8483284 A JP8483284 A JP 8483284A JP 8483284 A JP8483284 A JP 8483284A JP S60227922 A JPS60227922 A JP S60227922A
Authority
JP
Japan
Prior art keywords
punch
die
plate
bush
hole
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
JP8483284A
Other languages
Japanese (ja)
Other versions
JPH0442085B2 (en
Inventor
Takashi Nakano
隆志 中野
Nobuyuki Ishinaga
石永 信行
Shuichi Matsunaga
修一 松永
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.)
Aida Engineering Ltd
Original Assignee
Aida Engineering 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 Aida Engineering Ltd filed Critical Aida Engineering Ltd
Priority to JP8483284A priority Critical patent/JPS60227922A/en
Publication of JPS60227922A publication Critical patent/JPS60227922A/en
Publication of JPH0442085B2 publication Critical patent/JPH0442085B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a titled metallic die which can execute back extrusion of a high-depth hole ratio with high accuracy by one process, and also has extended its life, by providing a bush for guiding a punch, so as to be freely liftable, and guiding the punch in the vicinity of the die. CONSTITUTION:When a punch 1 descends, it abuts on a piston 15, and by its energizing force, a plate 5 is lowered against an energizing force of a spring 12. The tip of a punch 2 descends together in a slight lower part of a bush 3, and also, maintaining a position in a hole of a guide bush 6. The bush 6 is fitted into a hole of a fixed member 9 of a die 18 of a die 10, and abuts on the upper face of the die 18. Subsequently, when the punch 1 descends, the bush 6 continues to press the die 18 through the plate 5 by a constant energizing force of the piston 15. The punch 2 descends continuously together with the punch 1, and when the tip reaches a blank 21, the pressure is started. In this case, the punch presses the blank 21 without eccentricity at all and the forming is executed with high accuracy.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は冷間鍛造に関するもので、さらに詳細にいえば
、下型のダイスに入れた円柱形のブランクを上型のパン
チで加圧し、ブランクの外周部を押し出して深穴を有す
る円筒容器状成形品とする後方押出加工用金型に関する
ものである。
Detailed Description of the Invention "Field of Industrial Application" The present invention relates to cold forging, and more specifically, a cylindrical blank placed in a lower die is pressurized with an upper punch. This invention relates to a mold for backward extrusion processing that extrudes the outer circumference of a blank to form a cylindrical container-shaped product having a deep hole.

「従来の技術」、「発明が解決しようとする問題点」 従来、ブランクに深穴押出加工を行なう場合、パンチに
強大な応力が作用しダイスの穴と偏心して成形品の精度
が低下したり、・ぐンチが曲って折損するのでパンチを
案内するガイドを設けていた。その対策例としてダイス
の上方をまたぐ固定ガイドを設け、その穴にパンチを通
して案内したものがあるが、ダイスの穴から成形品を抜
き出すだめには固定ガイドはダイスから成形品の高さよ
りも若干高い位置に設けなければならない。従ってパン
チの先端がダイスの穴に入れたブランクに到達して荷重
がかかるときのパンチの先端と固定ガイドとの距離が大
きく、続いて深穴を成形させるためにパンチを下降させ
ると荷重によるパンチの偏心が大きくなシ、実用限界と
して穴の深さ/穴径=深穴比は2.5以下であった。
``Prior art'' and ``Problems to be solved by the invention'' Conventionally, when performing deep hole extrusion processing on a blank, a strong stress was applied to the punch, causing eccentricity with the die hole and reducing the accuracy of the molded product.・Since the gunchi would bend and break, a guide was provided to guide the punch. An example of a countermeasure against this problem is to install a fixed guide that straddles the top of the die and guide the punch through the hole, but the fixed guide is slightly higher than the height of the molded product from the die to pull out the molded product from the hole in the die. must be placed in position. Therefore, when the tip of the punch reaches the blank inserted in the hole of the die and a load is applied, the distance between the tip of the punch and the fixed guide is large, and when the punch is subsequently lowered to form a deep hole, the punch due to the load Since the eccentricity of the hole is large, the practical limit is that the hole depth/hole diameter=deep hole ratio is 2.5 or less.

[問題を解決するための手段J1 「作用」本発明の目
的はこれらの欠点を除き、パンチを案内するガイドプツ
シ−を昇降自在に設け、これをパンチに連動させてダイ
スに向けて運動させることによシ、パンチが荷重を受け
る時期にパンチをダイスの近傍で案内することを可能と
し、従って荷重によるパンチの偏心を防止し一工程で深
穴比3〜6の後方押出加工を高精度で行なうことが゛で
き、またパンチの折損がなく金型の寿命を伸すことので
きる後方押出加工用金型を提供することにある。
[Means for Solving the Problem J1 ``Operation'' The purpose of the present invention is to eliminate these drawbacks and to provide a guide pushchair that guides the punch so that it can be raised and lowered, and to move it in conjunction with the punch toward the die. In addition, it is possible to guide the punch near the die when the punch is under load, thus preventing eccentricity of the punch due to the load, and performing backward extrusion processing with a deep hole ratio of 3 to 6 in one process with high precision. It is an object of the present invention to provide a mold for backward extrusion processing, which can be used for backward extrusion processing, and which can extend the life of the mold without breaking the punch.

以下本発明の実施例について図面を参照して説明、する
Embodiments of the present invention will be described below with reference to the drawings.

「実施例」 第1図及び第2図において、本発明の後方押出加工用金
型の構造を示している。上型(1)にはパンチ(2)が
固定されている。パンチ(2)は後方押出加工を容易と
するだめに第4図に示す如く先端が軸部よシ若干大径と
なっている。このためパンチ(2)の軸部を摺動自在に
案内するプツシ−(3)は組立を可能とするため、2分
割になっておシ可動部材(4)に固定されている。可動
部材(4)の下面にはプツシ−(3)と同心の円筒部が
突出し、これがプレート(5)に固定されたガイドブツ
シュ(6)の穴に摺動自在に嵌入している。プレート(
5)に立設したピン(刀は可動部材(4)を貫通し、ビ
ン(7)の上端部に係合したワッシャ(8)と可動部材
(4)との間にはばね(9)を介在させ、可動部材(4
)をガイドプツシ−(6)に向けて付勢している。従っ
てプツシ−(3)に無理な上向の力が作用するとげね(
9)が収縮して上方に逃げる。プレート(5)は第2図
に示すような横長形で、左右両端部は下型(11部に立
設したガイドロッドaυにより昇降自在に案内されてい
る。プレート(5)と下型QO)部との間にはガイドロ
ッドaυの回りにばねαりが設けられプレート(5)を
上向に付勢している。ガイドロッドaυの上端にはフラ
ンジa(至)が設けられプレート(5)の上昇限を規制
している。プレート(5)の上面には上向のエアシリン
ダα荀が設けられ、これに適合するピストン(151の
ピストンロッドは上方に突出している。エアシリンダα
aの圧力室には給気口(16)が設けられ、常に一定圧
力のエアが供給されピストンα9を上型(1)に向けて
付勢している。従って上型(1)が下降するときピスト
ン(15)を介してプレート(5)は一定の付勢力で押
し下げられる。プレート(5)に固定されたガイドプツ
シ−(6)はプレート(5)の下方にパンチ(2)と同
心に一定長さ突出し、中心にはパンチ(2)の先端大径
部が通る穴がおいている。
"Example" FIG. 1 and FIG. 2 show the structure of a mold for backward extrusion processing of the present invention. A punch (2) is fixed to the upper die (1). As shown in FIG. 4, the tip of the punch (2) has a slightly larger diameter than the shaft in order to facilitate backward extrusion. For this reason, the pusher (3), which slidably guides the shaft of the punch (2), is divided into two parts and fixed to the movable member (4) to enable assembly. A cylindrical portion concentric with the pusher (3) protrudes from the lower surface of the movable member (4), and is slidably fitted into a hole in a guide bush (6) fixed to the plate (5). plate(
5) The vertical pin passes through the movable member (4), and a spring (9) is placed between the washer (8) engaged with the upper end of the bottle (7) and the movable member (4). The movable member (4
) is biased towards the guide push-piece (6). Therefore, an unreasonable upward force acts on the push-piece (3).
9) contracts and escapes upward. The plate (5) has an oblong shape as shown in Fig. 2, and both left and right ends are guided so as to be raised and lowered by a guide rod aυ erected at part 11 (plate (5) and lower mold QO). A spring α is provided around the guide rod aυ between the plate (5) and the plate (5) to urge the plate (5) upward. A flange a is provided at the upper end of the guide rod aυ to regulate the upper limit of the rise of the plate (5). An upwardly directed air cylinder α is provided on the upper surface of the plate (5), and a piston rod (151) that fits the air cylinder α protrudes upward.
An air supply port (16) is provided in the pressure chamber a, and air at a constant pressure is always supplied to urge the piston α9 toward the upper die (1). Therefore, when the upper die (1) descends, the plate (5) is pushed down by a constant urging force via the piston (15). A guide push (6) fixed to the plate (5) protrudes below the plate (5) for a certain length concentrically with the punch (2), and has a hole in the center through which the large diameter portion of the tip of the punch (2) passes. I'm there.

下型00)にはパンチ(2)と同心の中心穴αDを有す
るダイス08)が対向して設けられている。ダイスQI
Cの上面部には固定部材a9が固設され、この中央部に
は下降してきた前述のガイドブツシュ(6)の外径を摺
動自在に嵌入させる穴が設けられている。プレート(5
)の下降限はガイドブツシュ(6)の下面トダイスal
lOの上面とで規制される。ダイス(18)の中心大側
の下方にはカウンタパンチ(20)が昇降自在に、かつ
下限が規制されて設けられ、中心穴aDに供給されるブ
ランク0υの下面を受けるようになっている。
The lower die 00) is provided with a die 08) facing the punch (2) and having a center hole αD concentric with the punch (2). Dice QI
A fixing member a9 is fixed to the upper surface of C, and a hole is provided in the center thereof into which the outer diameter of the aforementioned guide bush (6) that has descended can be slidably inserted. Plate (5
) is the lower limit of the lower surface of the guide bush (6).
It is regulated by the upper surface of lO. A counter punch (20) is provided below the large center side of the die (18) so as to be movable up and down and with its lower limit regulated, and is adapted to receive the lower surface of the blank 0υ supplied to the center hole aD.

カウンタパン1チ翰の下方にはこれを上向に付勢してダ
イス(2)の上面から突出させ成形品(221を押し出
すノックアウトピン(231が設けられている。なお、
図は説明上簡略化している。すなわち、上型(1)、下
型α〔は外形線にとどめてあり、実際には多部品で構成
されている。 ・ 次に作用について述べる。上昇限においては、第1図に
示す如くプレート(5)に固定したエアシリンダ(14
)のピストンα9は上昇限にあって上型(1)との間に
若干の間隙(C)が生じている。従ってプレート(5)
はばねaaに付勢されガイドロッドaυのフランジaj
に当接する上昇限の位置を占める。この関係位置ニオい
てパンチ(2)の先端はガイドブツシュ(6)ニ密着し
ている可動部材(4)に固定したブツシュ(3)の下面
よシ若干下方に位置する。従ってパンチ(2)は上型(
1)が昇降するとき常にブツシュ(3)によって東上型
(1)が上昇限にある間にダイスa8の中心穴αηにブ
ランクeυが供給される。上型(1)が下降してくると
上型(1)はピストンa9に当接し、その付勢力により
プレート(5)をばね(12+の付勢力に抗してガイド
ロッドQl)に沿って下降させる。パンチ(2)の先端
はプツシ−(3)の若干下方のガイドブツシュ(6)の
中心穴内の位置を維持しながら共に下降する。従って先
づガイドブツシュ(6)が下型α0)のダイス鵠に固定
した固定部材α■の穴に嵌入レダイ哀α槌の上面に当接
する。続いて上型(1)が下降するとピストンQ51は
エアシリンダaa内に押し込まれピストンa5の一定の
付勢力でプレート(5)を介してガイドブツシュ(6)
をダイスHに押圧し続ける。パンチ(2)は上型(1)
と共に下降を続は先端がブランクCυに到達すると加圧
が始まる。このときブランク(21)の上面とブツシュ
(3)の下面とは極めて接近しているのでパンチ(2)
は偏心することなくブランク0υに押し込まれ、プラン
クシυの外周部は中心穴αDに沿って後方に押し出され
る。上型(1)の下降限において第3図に示す状態とな
り成形品(22)が完成する。成形品(22)の上縁が
ガイドプツシ−(6)に達した場合はエアシリンダα荀
が縮んで対応する。続いて上型(1)は上述と逆順序で
上昇限に戻る。その間に成形品(2)はパンチ(2)に
付着したま\上昇すると、ピストンα9の付勢力によシ
ブレート(5)はパンチ(2)と逆に運動し、パンチ(
2)はガイドブツシュ(6)の中心穴に引込むに従って
成形品0邊はガイドブツシュ(6)によって抜かれ、ダ
イスa8に残った成形品Qりは、上型(1)が上昇限近
傍まで上昇した時期にノックアウトピン(23)が上昇
し、カウンタパンチ(2Iを介して成形品(221をダ
イス0樽上に突き出す。成形品(2)が搬出され次のブ
ランク(2+)が供給され作業が継続される。パンチ(
2)に荷重がかかる時期のブツシュ(3)の下面がブラ
ンクeυ −の上面に極めて近いので成形品(2急の精
度は向上し、またパンチ(2)の折損が防止できる。実
績によれば深穴比6までの後方押出加工が連続して可能
であり、金型の寿命は伸びる。なおパンチ(2)の下降
速度は加工される製品の流動速度が600 am / 
sec以下になることが望ましい。パンチ(2)の上昇
限を誤って高く調節した場合まだ油圧プレスのように上
限位置がバラツキした場合は、パンチ(2)υ先端大径
部はプツシ−(3)に係合して持ち上げるが、可動部材
(4)を介してばね(9)を圧縮しプツシ−(3)が上
昇して逃げるので各部の破損が防止できる。
A knockout pin (231) is provided below the one-inch counter punch holder to push it upward and protrude from the upper surface of the die (2) to push out the molded product (221).
The figure is simplified for purposes of explanation. That is, the upper mold (1) and the lower mold α [are limited to the outline, and are actually composed of multiple parts.・Next, we will discuss the effect. At the upper limit, the air cylinder (14) fixed to the plate (5) as shown in Fig.
) is at its upper limit, and there is a slight gap (C) between it and the upper die (1). Therefore plate (5)
The flange aj of the guide rod aυ is biased by the spring aa.
occupies the position of the upper limit of the rise, which is in contact with . In this relational position, the tip of the punch (2) is located slightly below the lower surface of the bush (3) fixed to the movable member (4) which is in close contact with the guide bush (6). Therefore, the punch (2) is the upper die (
When the die 1) moves up and down, the blank eυ is always supplied to the center hole αη of the die a8 by the bushing (3) while the Tojo mold (1) is at its upper limit. When the upper mold (1) descends, it comes into contact with the piston a9, and its urging force causes the plate (5) to descend along the spring (guide rod Ql against the urging force of 12+). let The tip of the punch (2) is lowered together while maintaining its position in the center hole of the guide bush (6) slightly below the pusher (3). Therefore, first, the guide bush (6) is fitted into the hole of the fixing member α■ fixed to the die of the lower die α0) and comes into contact with the upper surface of the die α mallet. Subsequently, when the upper mold (1) descends, the piston Q51 is pushed into the air cylinder aa, and the constant urging force of the piston a5 pushes the guide bush (6) through the plate (5).
Continue pressing on die H. Punch (2) is the upper die (1)
As the tip continues to descend, pressurization begins when the tip reaches the blank Cυ. At this time, the upper surface of the blank (21) and the lower surface of the bush (3) are very close to each other, so the punch (2)
is pushed into the blank 0υ without eccentricity, and the outer peripheral part of the planksi υ is pushed out backward along the center hole αD. At the lower limit of the upper mold (1), the state shown in FIG. 3 is reached, and the molded product (22) is completed. When the upper edge of the molded product (22) reaches the guide push-piece (6), the air cylinder .alpha. Subsequently, the upper mold (1) returns to the upper limit in the reverse order as described above. During that time, the molded product (2) rises while still attached to the punch (2), and the sibrate (5) moves in the opposite direction to the punch (2) due to the biasing force of the piston α9.
2) As it is drawn into the center hole of the guide bush (6), the molded part 0 is pulled out by the guide bush (6), and the molded part Q remaining in the die a8 is moved until the upper die (1) approaches its upper limit. When the knockout pin (23) rises, it pushes out the molded product (221) onto the die 0 barrel through the counter punch (2I).The molded product (2) is carried out, and the next blank (2+) is supplied and the work begins. is continued.Punch (
Since the lower surface of the bushing (3) when the load is applied to 2) is extremely close to the upper surface of the blank eυ -, the precision of the molded product (2) is improved and breakage of the punch (2) can be prevented.According to actual results, Continuous backward extrusion processing with a deep hole ratio of up to 6 is possible, extending the life of the mold.The descending speed of the punch (2) is such that the flow rate of the processed product is 600 am/
It is desirable that it be less than sec. If you accidentally adjust the upper limit of the punch (2) to a higher value, and if the upper limit position varies as in a hydraulic press, the large diameter part of the tip of the punch (2) will engage the pusher (3) and lift it up. Since the spring (9) is compressed via the movable member (4) and the pusher (3) rises and escapes, damage to various parts can be prevented.

「発明の効果」 以上の説明から明らかなように本発明によれば、パンチ
を案内するプツシ=を昇降自在としたことにJ:′−、
b、パンチが荷重を受ける時期にパンチの先端に極めて
近い位置でブツシュがパンチを案内することを可能とし
、かつ成形品の搬出に支障がなく、深穴比3〜6の後方
押出加工を一工程で連続して行なうことができ、また金
型の寿命を伸すことができ生産効率が向上するなど、実
用上の効果と利点は大きい。
"Effects of the Invention" As is clear from the above description, according to the present invention, the pusher for guiding the punch can be raised and lowered.
b. The bushing allows the punch to be guided at a position extremely close to the tip of the punch when the punch is under load, and there is no problem in carrying out the molded product, and it is possible to perform backward extrusion processing with a deep hole ratio of 3 to 6. It has great practical effects and advantages, such as being able to carry out the process continuously, extending the life of the mold, and improving production efficiency.

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

第1図は上型が上限時の縦断面図、 第2図はその下型部の一部断面の平面図、第3図は上型
が下限時の縦断面図、 第4図はパンチ先端の形状を示す説明図である1は上型
、2はパンチ、3はブソシニ、4は可動部材、5はプレ
ート、6はガイドブンシー、7はピン、8はワッシャ、
9はばね、1oは下型、11はガイドロッド、12はば
ね、13はフランジ、14はエアシリンダ、15はピス
トン、16は給気口、17は中心穴、18はダイス、1
9は固定部材、20はカウンタパンチ、21はブランク
、22は成形品、23はノックアウトビンである。 特許出願人 アイダエンジニアリング株式会社代表者 
会 1)啓之助 1、事件の表示 昭和59年特許願第84832号3.
補正をする者 事件との関係 特許出願人 性 所 〒229 神奈川県相模原市大山町2番10号
4、補正命令の日付 昭和59年7月11日(発送日 昭和59年7月31日
)特許出願人 アイダエンジニアリング株式会社代表者
 会 1)啓之助
Figure 1 is a longitudinal sectional view when the upper die is at the upper limit, Figure 2 is a plan view of a partial cross section of the lower die, Figure 3 is a longitudinal sectional view when the upper die is at the lower limit, and Figure 4 is the tip of the punch. 1 is an upper mold, 2 is a punch, 3 is a bushing, 4 is a movable member, 5 is a plate, 6 is a guide bunshi, 7 is a pin, 8 is a washer,
9 is a spring, 1o is a lower mold, 11 is a guide rod, 12 is a spring, 13 is a flange, 14 is an air cylinder, 15 is a piston, 16 is an air supply port, 17 is a center hole, 18 is a die, 1
9 is a fixing member, 20 is a counter punch, 21 is a blank, 22 is a molded product, and 23 is a knockout bottle. Patent applicant Representative of AIDA ENGINEERING Co., Ltd.
1) Keinosuke 1, Incident Indication Patent Application No. 84832 of 1984 3.
Relationship with the case of the person making the amendment Patent applicant Location: 2-10-4 Oyama-cho, Sagamihara-shi, Kanagawa 229, Date of amendment order: July 11, 1980 (Shipping date: July 31, 1980) Patent application People AIDA Engineering Co., Ltd. Representative Meeting 1) Keinosuke

Claims (1)

【特許請求の範囲】 上型に先端部が若干太く形成されだノくンチ(2)を設
け、該パンチの軸部を摺動自在に案内する2つ割のブツ
シュを保持し下型部に昇降自在に案内されたプレート(
5)を設け、下型に前記ノくンチと対向するダイスα樽
を設け、前記プレート(5)と上型(1)との間に流体
圧シリンダ装置を介在させ、前記プレー ) (5)の
下面に前記ダイス部の穴に摺動自在に嵌入する位置決め
用のガイドブツシュ(6)を設け、さらに前記プレート
(5)と下型a〔との間にばねを介在させたことを特徴
とする後方押出加工用金型。
[Scope of Claims] A punch (2) with a slightly thicker tip is provided in the upper die, and a two-split bushing for slidably guiding the shaft of the punch is provided in the lower die. A plate that can be raised and lowered (
5), a die α barrel facing the punch is provided on the lower mold, a fluid pressure cylinder device is interposed between the plate (5) and the upper mold (1), and the plate (5) A positioning guide bush (6) that is slidably fitted into the hole of the die portion is provided on the lower surface of the die, and a spring is further interposed between the plate (5) and the lower mold a. A mold for backward extrusion processing.
JP8483284A 1984-04-26 1984-04-26 Metallic die for rear extrusion Granted JPS60227922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8483284A JPS60227922A (en) 1984-04-26 1984-04-26 Metallic die for rear extrusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8483284A JPS60227922A (en) 1984-04-26 1984-04-26 Metallic die for rear extrusion

Publications (2)

Publication Number Publication Date
JPS60227922A true JPS60227922A (en) 1985-11-13
JPH0442085B2 JPH0442085B2 (en) 1992-07-10

Family

ID=13841747

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8483284A Granted JPS60227922A (en) 1984-04-26 1984-04-26 Metallic die for rear extrusion

Country Status (1)

Country Link
JP (1) JPS60227922A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008213040A (en) * 2007-01-22 2008-09-18 Nishio Seimitsu Kk Hollow-forging member and producing method thereof
JP2009178741A (en) * 2008-01-31 2009-08-13 Nishio Seimitsu Kk Method for manufacturing forging turbo fin
KR101064303B1 (en) 2009-04-29 2011-09-14 일진컴포지트 주식회사 Extruder Apparatus for Aluminum container
CN102794327A (en) * 2012-08-23 2012-11-28 湖南天雁机械有限责任公司 Mold for extrusion forming of engine valve rotating mechanism base
CN103921126A (en) * 2014-04-23 2014-07-16 郑州机械研究所 Upsetting backward-extrusion continuous forming tool set
CN104353691A (en) * 2014-10-29 2015-02-18 平高集团有限公司 Z type sensing finger one-molded die for high-voltage switch
CN104399768A (en) * 2014-10-29 2015-03-11 平高集团有限公司 Z-shaped touch finger forming apparatus for high voltage switch, and its secondary forming die
JP2016052673A (en) * 2014-09-04 2016-04-14 株式会社ヤマナカゴーキン Forging die device
CN107377652A (en) * 2017-08-16 2017-11-24 浙江长华汽车零部件有限公司 Efficiently strong extrusion cold forming mould

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529428A (en) * 1975-07-11 1977-01-25 Fuji Photo Optical Co Ltd Exposure data display device
JPS5760737U (en) * 1980-09-30 1982-04-10

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS543462A (en) * 1977-06-10 1979-01-11 Hitachi Ltd Stabilizing device of field discharge type electronic gun

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529428A (en) * 1975-07-11 1977-01-25 Fuji Photo Optical Co Ltd Exposure data display device
JPS5760737U (en) * 1980-09-30 1982-04-10

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008213040A (en) * 2007-01-22 2008-09-18 Nishio Seimitsu Kk Hollow-forging member and producing method thereof
JP2009178741A (en) * 2008-01-31 2009-08-13 Nishio Seimitsu Kk Method for manufacturing forging turbo fin
KR101064303B1 (en) 2009-04-29 2011-09-14 일진컴포지트 주식회사 Extruder Apparatus for Aluminum container
CN102794327A (en) * 2012-08-23 2012-11-28 湖南天雁机械有限责任公司 Mold for extrusion forming of engine valve rotating mechanism base
CN103921126A (en) * 2014-04-23 2014-07-16 郑州机械研究所 Upsetting backward-extrusion continuous forming tool set
JP2016052673A (en) * 2014-09-04 2016-04-14 株式会社ヤマナカゴーキン Forging die device
CN106180514A (en) * 2014-09-04 2016-12-07 株式会社山中合金 Forging die device
CN104353691A (en) * 2014-10-29 2015-02-18 平高集团有限公司 Z type sensing finger one-molded die for high-voltage switch
CN104399768A (en) * 2014-10-29 2015-03-11 平高集团有限公司 Z-shaped touch finger forming apparatus for high voltage switch, and its secondary forming die
CN107377652A (en) * 2017-08-16 2017-11-24 浙江长华汽车零部件有限公司 Efficiently strong extrusion cold forming mould

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