JPH0248107Y2 - - Google Patents
Info
- Publication number
- JPH0248107Y2 JPH0248107Y2 JP1983097647U JP9764783U JPH0248107Y2 JP H0248107 Y2 JPH0248107 Y2 JP H0248107Y2 JP 1983097647 U JP1983097647 U JP 1983097647U JP 9764783 U JP9764783 U JP 9764783U JP H0248107 Y2 JPH0248107 Y2 JP H0248107Y2
- Authority
- JP
- Japan
- Prior art keywords
- pin
- hole
- opening
- mold
- knockout
- 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
Links
- 238000005242 forging Methods 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
Landscapes
- Forging (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、鍛造用金型の改良に関する。[Detailed explanation of the idea] (Industrial application field) The present invention relates to improvement of a forging die.
（従来技術）
従来、鍛造プレスされた成形品を突き出し可能
なノツクアウトピンを備えた鍛造プレス装置は一
般的に知られている（例えば、実開昭57−156246
号公報参照）。そして、第１図に示す如く、基台
１上に配置した下型２と上型３とでワーク、例え
ば自動車のステアリングナツクル４を鍛造するた
めの鍛造用金型５においては、下型２にステアリ
ングナツクル４の突起部４ａを形成するための型
孔２ａが設けられ、該型孔２ａに続くピン孔２ｂ
に、加工後のステアリングナツクル４を、突起部
４ａを突き上げて持上げるためのノツクアウトピ
ン６が上下移動可能に遊嵌されている。(Prior Art) Conventionally, a forging press device equipped with a knock-out pin capable of ejecting a forged pressed product is generally known (for example, in Japanese Utility Model Application No. 57-156246).
(see publication). As shown in FIG. 1, in a forging die 5 for forging a workpiece, for example, a steering knuckle 4 of an automobile, with a lower die 2 and an upper die 3 arranged on a base 1, the lower die 2 and the upper die 3 are used. A mold hole 2a for forming the protrusion 4a of the steering knuckle 4 is provided in the mold hole 2a, and a pin hole 2b following the mold hole 2a is provided.
A knockout pin 6 for lifting the steering knuckle 4 after processing by pushing up the protrusion 4a is loosely fitted in a vertically movable manner.
ところが、型孔２ａ内にはスケール吹かしがな
いためにノツクアウトピン６の上部にスケール
（錆など）７が溜まり、堆積量が多くなると、ス
テアリングナツクル４の突起部４ａの下端に肉が
充満しなくなるので欠肉による不良品が発生する
ことがある。 However, since there is no scale blowing inside the mold hole 2a, scale (rust, etc.) 7 accumulates on the upper part of the knockout pin 6, and when the amount of accumulation increases, the lower end of the protrusion 4a of the steering knuckle 4 becomes filled with meat. This may result in defective products due to lack of fillet.
このため、定期的に鍛造設備を止めてスケール
の除去作業をする必要があつた。 For this reason, it was necessary to periodically stop the forging equipment and remove scale.
（考案の目的）
本考案は、成形中、常時、圧縮空気を供給する
ことによりノツクアウトピンの精度を維持する一
方、ノツクアウト時においては圧縮空気の噴出力
を利用して、鍛造用金型における下型の型孔内の
ノツクアウトピンの上部にスケール等が溜まらな
いようにすることを簡便な手段で行なうことを目
的とするものである。(Purpose of the invention) The present invention maintains the accuracy of the knockout pin by constantly supplying compressed air during molding, and at the same time uses the jet force of the compressed air during knockout to improve the accuracy of the forging die. The object of this invention is to prevent scale and the like from accumulating on the upper part of the knockout pin in the mold hole of the lower mold by a simple means.
（考案の構成）
このため本考案は、下型のワーク成形用型孔か
ら鉛直下方に、かつ同径状に穿設されるととも
に、下端部に開口部を有するピン孔と、該ピン孔
に対して所定の隙間を介して上下動可能で、加工
後のワークを持ち上げるノツクアウトピンとを備
えた鍛造用金型において、上記下型には、上記ピ
ン孔に連通して、常時、該ピン孔に圧縮空気を供
給する空気通路が設けられ、上記ノツクアウトピ
ンには、常時、上記開口部より下側に位置し、ノ
ツクアウトピンと一体で動くとともに、鍛造時
に、上記開口部を開放して、圧縮空気を開口部か
ら流出させ、ノツクアウト時に、上記開口部を遮
蔽して、圧縮空気を上記ワーク成形用型孔から流
出させるべく、ノツクアウトピンの移動に応じ
て、上記開口部の開閉制御を行なう開閉部材が設
けられていることを特徴とするものである。(Structure of the invention) For this reason, the present invention has a pin hole that is drilled vertically downward from the workpiece forming hole of the lower mold and has the same diameter, and has an opening at the lower end, and In contrast, in a forging die equipped with a knockout pin that is movable up and down through a predetermined gap and that lifts up a workpiece after processing, the lower die has a knockout pin that communicates with the pin hole and that pin hole is always in contact with the pin hole. The knock-out pin is provided with an air passage for supplying compressed air, and the knock-out pin is always located below the opening, moves together with the knock-out pin, and opens the opening during forging. The opening/closing control of the opening is controlled in accordance with the movement of the knockout pin in order to allow the compressed air to flow out of the opening, and at the time of knockout, to shield the opening and allow the compressed air to flow out of the workpiece forming mold hole. The device is characterized in that it is provided with an opening/closing member.
（考案の効果）
本考案によれば、下型のピン孔に圧縮空気を常
時供給する圧縮空気通路を連通するとともに、こ
の圧縮空気の流出する方向を、鍛造時とノツクア
ウト時とで切換えることにより、ノツクアウトピ
ンの精度を常時、維持できる一方、ノツクアウト
時、ノツクアウトピン上部に溜まるスケールを確
実に除去できる。また、圧縮空気の流出方向を鍛
造時とノツクアウト時とで切換える手段として、
ノツクアウトピンに、それと一体で動く開閉部材
を設けたので、ノツクアウトピンの移動に応じ
て、圧縮空気の流出方向の切換えを簡便に行なう
ことができる。(Effects of the invention) According to the invention, by connecting a compressed air passage that constantly supplies compressed air to the pin hole of the lower die, and by switching the direction in which this compressed air flows out between during forging and when knocking out. The accuracy of the knockout pin can be maintained at all times, while the scale that accumulates on the top of the knockout pin can be reliably removed during knockout. In addition, as a means to switch the outflow direction of compressed air between forging and knockout,
Since the knockout pin is provided with an opening/closing member that moves together with the knockout pin, the outflow direction of the compressed air can be easily switched in accordance with the movement of the knockout pin.
（実施例）
以下、本考案の実施例を添付図面について詳細
に説明する。(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第２図に示すように、ステアリングナツクル４
を鍛造するための鍛造用金型は、鋼材を伸延する
荒地用金型１０と、伸延された鋼材を粗加工する
荒型用金型１１と、粗加工された鋼材を仕上げす
る仕上げ用金型１２とで構成され、各金型１０〜
１２の下型１０ａ，１１ａ，１２ａはクランプ１
３，…１３により基台１４上に一連に固定され
る。 As shown in Figure 2, the steering knuckle 4
The forging dies for forging include a roughing die 10 for elongating the steel material, a roughing die 11 for rough processing the elongated steel material, and a finishing die for finishing the rough processed steel material. 12, each mold 10~
12 lower molds 10a, 11a, 12a are clamps 1
3, . . . 13 in series on the base 14.
いま代表して仕上げ用金型１２の下型１２ａに
ついてのみ述べると、第３図に示すように、下型
１２ａには、従来と同様にステアリングナツクル
４の突起部４ａを形成するための型孔１２ｃが設
けられ、該型孔１２ｃに続くピン孔１２ｄに加工
後のステアリングナツクル４の突起部４ａを持上
げるためのノツクアウトピン１５が所定の隙間ｔ
を隔てて上下移動可能に遊嵌されている。この隙
間ｔは、実際には例えば1/100mmないし2/100mm程
度である。 Now, to describe only the lower mold 12a of the finishing mold 12 as a representative, as shown in FIG. A hole 12c is provided, and a knockout pin 15 for lifting the protrusion 4a of the steering knuckle 4 after processing is inserted into the pin hole 12d following the mold hole 12c with a predetermined gap t.
It is loosely fitted so that it can be moved up and down. This gap t is actually about 1/100 mm to 2/100 mm, for example.
該ノツクアウトピン１５は、開閉部材としての
持ち上げプレート１６で支持され、カム機構（図
示せず）に連動する昇降軸１７で作動されるレバ
ー１８，１８を介して持ち上げプレート１６が上
下動されることにより上下動される。 The knockout pin 15 is supported by a lifting plate 16 as an opening/closing member, and the lifting plate 16 is moved up and down via levers 18, 18 operated by a lifting shaft 17 linked to a cam mechanism (not shown). It moves up and down.
上記下型１２ａの下面には、第４図に示すよう
に、対角線に沿つてピン孔１２ｄに連通する空気
通路１９が堀設され、該空気通路１９に、圧縮空
気の分岐供給パイプ２０が挿入される。 As shown in FIG. 4, an air passage 19 that communicates with the pin hole 12d is drilled in the lower surface of the lower mold 12a along a diagonal line, and a compressed air branch supply pipe 20 is inserted into the air passage 19. be done.
該分岐供給パイプ２０は第２図に示すように、
荒型用金型１１の下型１１ａの分岐供給パイプ２
１とともに主供給パイプ２２に接続され、主供給
パイプ２２にはコンプレツサー２３が接続され
る。 The branch supply pipe 20, as shown in FIG.
Branch supply pipe 2 of the lower mold 11a of the rough molding mold 11
1 and a main supply pipe 22, and a compressor 23 is connected to the main supply pipe 22.
上記のように仕上げ用金型１２を構成すれば、
上型１２ｂを開き、仕上げられたステアリングナ
ツクル４を取り出すと、第５図に示すように、型
孔１２ｃから突起部４ａが引き抜かれて中空にな
るので分岐供給パイプ２０からの圧縮空気がピン
孔１２ｄに流入し、ピン孔１２ｄとノツクアウト
ピン１５の外周との隙間ｔから型孔１２ｃを通つ
て型面側へ噴出するようになる。これは、ノツク
アウト時、持ち上げプレート１６が上昇してピン
孔１２ｄの下側（基台１４とノツクアウトピン１
５とのすき間）を閉塞するので、圧縮空気をピン
孔１２ｄの下側の開口端から逃げないようにして
いるためである。従つて、型孔１２ｃ内に入つた
スケールは圧縮空気の噴出力で型面側へ吹き飛ば
されるようになり、ノツクアウトピン１５の上部
に溜まることが全くない。 If the finishing mold 12 is configured as described above,
When the upper mold 12b is opened and the finished steering knuckle 4 is taken out, the protrusion 4a is pulled out from the mold hole 12c and becomes hollow, as shown in FIG. It flows into the hole 12d and is ejected from the gap t between the pin hole 12d and the outer periphery of the knockout pin 15 to the mold surface side through the mold hole 12c. This is because when the knockout occurs, the lifting plate 16 rises and the lower side of the pin hole 12d (the base 14 and the knockout pin 1
This is because the compressed air is prevented from escaping from the lower open end of the pin hole 12d. Therefore, the scale that has entered the mold hole 12c is blown away toward the mold surface by the jet force of the compressed air, and does not accumulate on the upper part of the knockout pin 15 at all.
また、上型１２ｂを閉じてステアリングナツク
ル４を鍛造している間は、ステアリングナツクル
４の突起部４ａの肉が型孔１２ｃに充満している
ので、圧縮空気の噴出は自然に停止されるととも
に持ち上げプレート１６は下降端に位置して、圧
縮空気はピン孔１２ｄの下側の開口端から流出さ
れるのでノツクアウトピン１５はこの圧縮空気で
強制空冷され、熱膨張が抑制されて上下移動が常
にスムースにできる。さらに熱膨張による軟化も
抑制されるのでへたりも減少する。 Furthermore, while the upper mold 12b is closed and the steering knuckle 4 is being forged, the mold hole 12c is filled with the flesh of the protrusion 4a of the steering knuckle 4, so the jetting of compressed air is naturally stopped. At the same time, the lifting plate 16 is located at the lower end, and the compressed air flows out from the lower opening end of the pin hole 12d, so the knockout pin 15 is forcedly cooled by this compressed air, and thermal expansion is suppressed, so that the Movement is always smooth. Furthermore, since softening due to thermal expansion is suppressed, sag is also reduced.
第１図は従来の鍛造用金型の断面図、第２図は
本考案に係る鍛造用金型の平面図、第３図は第２
図の仕上げ用金型の断面図、第４図は第３図の底
面図、第５図はステアリングナツクルを取り出し
た状態の第３図と同じ断面図である。
４……ステアリングナツクル、４ａ……突起
部、１１，１２……鍛造形用金型、１１ａ，１２
ａ……下型、１２ｃ……型孔、１２ｄ……ピン
孔、１５……ノツクアウトピン、１６……持ち上
げプレート（開閉部材）、１９……空気通路、２
０〜２２……供給パイプ、２３……コンプレツサ
ー、ｔ……隙間。
Fig. 1 is a sectional view of a conventional forging die, Fig. 2 is a plan view of a forging die according to the present invention, and Fig. 3 is a sectional view of a conventional forging die.
4 is a bottom view of FIG. 3, and FIG. 5 is the same sectional view as FIG. 3 with the steering knuckle removed. 4...Steering knuckle, 4a...Protrusion, 11, 12...Forging mold, 11a, 12
a... Lower mold, 12c... Mold hole, 12d... Pin hole, 15... Knockout pin, 16... Lifting plate (opening/closing member), 19... Air passage, 2
0 to 22... Supply pipe, 23... Compressor, t... Gap.
Claims (1)
同径状に穿設されるとともに、下端部に開口部を
有するピン孔と、該ピン孔に対して所定の隙間を
介して上下動可能で、加工後のワークを持ち上げ
るノツクアウトピンとを備えた鍛造用金型におい
て、 上記下型には、上記ピン孔に連通して、常時、
該ピン孔に圧縮空気を供給する空気通路が設けら
れ、上記ノツクアウトピンには、上記開口部の下
面側を開閉する開閉部材をノツクアウトピンの下
部に一体的に設け、ノツクアウト時に、上記開口
部下面を閉塞して、圧縮空気を上記ワーク成形用
型孔から上方に噴出させるようにしたことを特徴
とする鍛造用金型。[Scope of Claim for Utility Model Registration] A pin hole that is drilled vertically downward and with the same diameter as the workpiece molding hole of the lower mold and has an opening at the lower end, and In a forging die equipped with a knock-out pin that can move up and down through a gap and lifts up the workpiece after processing, the lower die has a knock-out pin that communicates with the pin hole and constantly
An air passage for supplying compressed air to the pin hole is provided, and the knockout pin is provided with an opening/closing member that opens and closes the lower surface side of the opening, and is integrally provided at the lower part of the knockout pin, so that when the knockout pin is knocked out, the opening and closing member opens and closes the lower surface of the opening. A forging die characterized in that the lower surface is closed so that compressed air is blown upward from the workpiece forming die hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9764783U JPS605739U (en) | 1983-06-23 | 1983-06-23 | Forging mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9764783U JPS605739U (en) | 1983-06-23 | 1983-06-23 | Forging mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS605739U JPS605739U (en) | 1985-01-16 |
| JPH0248107Y2 true JPH0248107Y2 (en) | 1990-12-18 |
Family
ID=30232177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9764783U Granted JPS605739U (en) | 1983-06-23 | 1983-06-23 | Forging mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS605739U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4414675Y1 (en) * | 1967-04-28 | 1969-06-23 | ||
| JPS477386U (en) * | 1971-02-19 | 1972-09-27 |
-
1983
- 1983-06-23 JP JP9764783U patent/JPS605739U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4414675Y1 (en) * | 1967-04-28 | 1969-06-23 | ||
| JPS477386U (en) * | 1971-02-19 | 1972-09-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS605739U (en) | 1985-01-16 |
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