JP3764353B2 - Forging press - Google Patents

Forging press Download PDF

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Publication number
JP3764353B2
JP3764353B2 JP2001219016A JP2001219016A JP3764353B2 JP 3764353 B2 JP3764353 B2 JP 3764353B2 JP 2001219016 A JP2001219016 A JP 2001219016A JP 2001219016 A JP2001219016 A JP 2001219016A JP 3764353 B2 JP3764353 B2 JP 3764353B2
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JP
Japan
Prior art keywords
blade
burr
product
cutting
punching
Prior art date
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Expired - Fee Related
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JP2001219016A
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JP2003033844A (en
Inventor
豊 尾崎
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.)
Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
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Priority to JP2001219016A priority Critical patent/JP3764353B2/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02Die forging; Trimming by making use of special dies ; Punching during forging
    • B21J5/027Trimming

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Forging (AREA)

Description

【0001】
【発明の属する技術分野】
本発明はプレス操作される複数個の金型間に素材を順送りして塊状素材から各種形状の製品を鍛造成型でき、しかもその成形過程で生ずる内バリ・外バリを同時打抜きできるトランスフアフィード装置付の鍛造プレスに関する。
【0002】
【従来の技術】
鍛造プレスの作業工程には、素材の潰し→荒打ち→仕上打ち→バリ抜きの4工程からなるものがある。最後のバリ抜き工程において、外バリと中バリの両方を打ち抜くと、個別にバリ抜きを行うよりも生産効率が向上することから、近年同時バリ抜きが行われるようになっている。
【0003】
上記の外・中バリの同時抜きには、次の従来技術がある。
特公昭62―27895号公報に記載された技術(従来例1)は、図6〜図7に示されているように、プレス操作される複数個の金型115,116 間に素材を順送りして鍛造成形するトランスフアーフィード装置101 付の鍛造プレスにおいて、仕上型に続く素材送り方向最後部に配設した打抜型115´,116´
に、プレス駆動源に連動してその下型より製品と外バリとを同時に上下に分離状態で抜離すノックアウト装置を装備し、打抜下型より抜離された製品120 と外ばり113 とを搬出する製品把持爪および外バリ搬送爪を両フィードバーの対向側面にそれぞれ上下に隔離して対向装備している。
そして、打抜後の製品120 と外バリ113 とをノックアウト装置の作動で同時に上下に分離状態で下打抜型より抜離したあと、製品120
を把持し外バリ113 をと共に機外搬出し、製品120 をシュート128 に投入し、外バリ113 をシュート127 に投入するようにしている。このため、外バリ打抜きによる必要金型数の減少と、製品と外バリの同時機外搬出による処理能力の向上とが達成できる。
【0004】
しかるに、この従来例1では、鍛造製品の形によっては製品とバリの分離が行い難く、とくに軸付フランジ部品では製品と外バリおよび中バリの分離が困難であって、現実には採用し難い。また、製品やバリを搬送するトランスフィーダ装置の構造が複雑になり、個別のシュートを必要とするなど、プレス構造が複雑化し、製造価格が高騰する。
【0005】
本発明は、上記事情に鑑み、軸付フランジ部品のように外バリと中バリの分離が困難な部品であっても、外バリと中バリの分離が確実に行え、トランスフィーダやシュートの構造を複雑にすることなく、製品とバリの搬送が行える鍛造プレスを提供することを目的とする。
【0006】
【課題を解決するための手段】
請求項1の鍛造プレスは、複数個の金型に素材を順送りして成形し、最後に打抜型で、製品中央の中バリと製品外周の環状の外バリとを同時に打抜くようにした鍛造プレスであって、下ベースプレートと、該下ベースプレートに固定された、前記内バリを落下させる落下孔が形成された下刃ホルダーと、前記下刃ホルダーに固定され、前記製品を下面から支えると共に、前記内バリを打抜く内周刃部および前記外バリを打抜く外周刃部を備えた下刃と、昇降自在な上パンチホルダーと、該上パンチホルダーに組込まれ、前記中バリを打抜くための上パンチと、前記上パンチホルダーに組込まれ、下降時に製品を上面から押える製品押えと、前記上パンチホルダーに形成された、前記外バリを打抜くための上刃と、前記下刃および前記上刃に形成された、前記外バリを円周方向に分断する分断刃とからなり、前記分断刃が、前記下刃の外周において、円周方向に間隔をあけて配置された複数個の下分断刃と、前記上刃の下面において、円周方向に区切って設けられた複数個の上分断刃とからなり、この下分断刃と上分断刃が環状の外バリを、円周方向の複数個所において、半径方向にシャーリングするものであることを特徴とする
0007】
請求項1の発明によれば、打抜き工程において、上刃と下刃により、製品から外バリが打抜かれ、上パンチと下刃により製品から中バリが打抜かれて、外バリと中バリが同時に打抜かれる。そして、環状の外バリは分断刃によって周囲方向に2以上に分断されるので、そのまま下方に落下する。このため、トランスファフィーダによりバリを搬送する必要がないので、鍛造プレスの構造が簡単となり、製品の連続型打ちが可能となって、生産性が向上する。また、環状の外バリが上分断刃と下分断刃によりシャーリングされるので、確実に複数片に分断され、シュート等による排出が容易に行える。
【0008】
【発明の実施の形態】
つぎに、本発明の実施形態に係る鍛造プレスを図面に基づき説明する。
図1は本発明の一実施形態に係る鍛造プレスにおける打抜き型部分の縦断面図、図2の(A)は下分断刃の斜視図、(B)は上分断刃の斜視図、(C)図はシャーリング動作を示す斜視図、図3は図1の鍛造プレスにおける工程図、図4はバリ抜き工程の詳細説明図、図5は本発明の他の実施形態に係る鍛造プレスのバリ抜き機構の説明図である。
【0009】
図1に示す打抜き型は、複数個の金型に素材を順送りに成型する鍛造プレスに用いられるもので、最終工程であるバリ抜きに用いられる型である。
図中、Gは製品であり、円板状のフランジ部と軸状の軸部が一体になった軸付フランジ部品である。この製品Gは、環状の外バリaと中心の円柱状の中バリbを打抜くことによって最終成形される。
【0010】
図1において、1はベースプレートであり、このベースプレート1上に下刃ホルダー2が固定されている。この下刃ホルダー2の中心には後述する中バリbを落下させる落下孔3が形成されている。
前記下刃ホルダー2には、下刃4が固定されている。この下刃4は製品Gを下面から支えると共に、中バリbを打抜くための抜き孔周囲の内周刃部4bと、外バリaを打抜くための外周刃部4aとが形成されている。
この下刃4の外周には、外バリaを分断するための後に詳述する下分断刃21が配置されている。
【0011】
6は上パンチホルダーであり、図示しない昇降機構により昇降自在となっている。そして、この上パンチホルダー6には、後述の部材が組込まれている。7は上パンチであり、その上端部が上パンチホルダー6に固着されている。8は製品押えであり、ガイドロッド9に外挿したバネ11により下向きの圧縮力が付与されている。そして、上パンチ6ホルダーのうち、製品押え8の外側の部分における下面が上刃12となっている。
この上刃12と下刃4の外周刃部4aによって外バリaが製品Gから切り取られ、上パンチ7と下刃4の内周刃部4bによって中バリbが製品Gから打抜かれるようになっている。
【0012】
本発明において、分断刃は、上刃12と下刃4の両方に設けられている
【0013】
つぎに、分断刃の一例を説明する。
図2の(A)図は、下刃4の外周に形成された下分断刃21を示している。下刃断刃21は断面L字形の部材であり、下刃4の周部に円周方向等間隔な位置に固定されている。また、その上端の刃面は半径方向に沿っている。図2の(B)図は上刃12の下面に設けられた上分断刃を示している。この上分断刃は、上固定刃22と上可動刃23を組合わせて構成されている。
上固定刃22は1/4 円周長の断面角形部材であり、2個一対の組合わせで用いられる。この上固定刃22の下面が打抜き後のバリを下分断刃21に向けて押圧する押片22a
(図4の(1)参照)になっている。そして、上刃12の下面において、中心点に対し対称な位置に固定されている。
上可動刃23も1/4 円周長の断面板状部材であり、2個一対の組合わせで用いられる。そして、上刃12の下面からバネ24で吊下げられており、中心点に対し対称かつ前記一対の上固定刃22間に配置されている。
【0014】
また、上固定刃22は前記下分断刃21の間を降下可能であり、上可動刃23は上固定刃22と共に昇降可能であるが、対向している下分断刃21の上面に当ると降下停止し、バネ24のたわみ反力で外バリaを下分断刃21の上面に挟みつけるようになっている。
そして図4の(III)、(IV) に示すように、この下分断刃21に対し上固定刃22は、はさみのように互いの刃面がすれ合って、外バリaをシャーリングすることができる。この結果、後述するごとく外バリaは4個の断片に分断される。
【0015】
つぎに、本実施形態の鍛造プレスにおける成形作用を説明する。
図3におけるI、II、IIIは、潰し工程I、荒打ち工程II、仕上打ち工程IIIを示しており、それぞれの工程で、素材Mが、潰し材M1、荒打ち材M2、仕上げ材M3のように成形されていく。仕上げ材M3は製品Gとしての外形は完成しており、あとは外バリaと中バリbを打抜けばよい状態である。
そして、符号IVで示す打抜き工程で、図1に示す抜き型により(外バリaと中バリbの同時)バリ抜きが行われる。
【0016】
上記の打抜き工程を図4に基づき、さらに詳細に説明する。
外バリaは上刃12を構成する上固定刃22と上可動刃23の下降によって、製品Gから打ち抜かれ、環状の外バリaとなる。その外バリaは(I)図に示すように、下分断刃21の上面に載せられる。
引き続いて上固定刃22と上可動刃23が共に下降すると、(II)図に示すように上可動刃23が下分断刃21との間に外バリaを挟みつけて静止され、さらに上固定刃22のみが下降し、(III)図に示すように上固定刃22と下分断刃21によってシャーリングされ、外バリaは4つの断片に分断される。その結果、(IV)図に示すように、4つの断片a1〜a4のうち、2つの断片a1,a3は下分断刃21上に留まり、残り2つの断片a2,a4はそのまま下方に落下していく。下分断刃21上に留まっている断片a1,a3も、上可動刃23の上昇と共に拘束が解禁されるとその重心点が支持点から外れているので傾転して落下する。このため、バラバラの外バリa1〜a4は、特別な搬送装置を用いることなく、シュートによって機外へ排出できる。
【0017】
つぎに、本発明の他の実施形態を説明する。
上記実施形態では上可動刃23はバリを打抜くときに上固定刃22と一体となって作動し打抜き後のバリを分断するときに上固定刃22と相対作動させるためにバネ24のたわみ力で制御しているが、図5に示すように内蔵したシリンダ24aで制御するようにしてもよい。
本発明における分断刃は、外バリaを複数片に分断できるものであれば、どのようなものを用いてもよい。したがって、前記実施形態では、シャーリングする分断刃を用いたが、この代りに押し切りするタイプの分断刃を用いてもよい。
また、外バリaを何個に分断するかも任意であって、2以上であれば任意に選択できる。
【0018】
【発明の効果】
請求項1の発明によれば、環状の外バリが周囲方向に2以上に分断されるので、そのまま下方に落下し、トランスファフィーダによりバリを搬送する必要がないので、鍛造プレスの構造が簡単となり、製品の連続型打ちが可能となって、生産性が向上する。また、シャーリングにより確実に複数片に分断され、シュート等による排出が容易に行える。
【図面の簡単な説明】
【図1】 本発明の一実施形態に係る鍛造プレスにおける打抜き型部分の縦断面図である。
【図2】 (A)は下分断刃の斜視図、(B)は上分断刃の斜視図、(C)図はシャーリング動作を示す斜視図である。
【図3】 図1の鍛造プレスにおける工程図である。
【図4】 バリ抜き工程の詳細説明図である。
【図5】 本発明の他の実施形態に係る鍛造プレスのバリ抜き機構の説明図である。
【図6】 従来例1の鍛造プレスの要部正面図である。
【図7】 従来例1における製品と外バリの搬出作業の説明図である。
【符号の説明】
1 ベースプレート
2 下刃ホルダー
3 落下孔
4 下刃
6 上パンチホルダー
7 上パンチ
8 製品押え
9 ガイドロッド
11 バネ
12 上刃
21 下分断刃
22 上固定刃
23 下可動刃
22a 押片
24 バネ
[0001]
BACKGROUND OF THE INVENTION
The present invention is a transfer feed device that can forge-mold products of various shapes from a mass material by feeding materials sequentially between a plurality of press-operated dies, and can simultaneously punch out inner burrs and outer burrs generated in the molding process. It is related with a forging press.
[0002]
[Prior art]
The forging press work process includes four processes: crushing raw material → rough punching → finish punching → burr removal. In the last deburring process, if both the outer burr and the middle burr are punched, the production efficiency is improved as compared with the case of individually deburring, so that simultaneous deburring has been performed recently.
[0003]
There are the following conventional techniques for simultaneously removing the above-mentioned outer and middle burrs.
The technique described in Japanese Patent Publication No. 62-27895 (conventional example 1) is forging by progressively feeding a material between a plurality of dies 115 and 116 to be pressed as shown in FIGS. In a forging press with a transfer feed device 101 for forming, punching dies 115 ′ and 116 ′ disposed at the rearmost part in the material feed direction following the finishing die
In addition, it is equipped with a knockout device that separates the product and the outer burr from the lower mold in a vertically separated state in conjunction with the press drive source, so that the product 120 and the outer beam 113 separated from the punched lower mold are The product gripping claw and the outer burr conveying claw to be transported are separated from each other on the opposite side surfaces of both feed bars, and are opposed to each other.
Then, after the punched product 120 and the outer burr 113 are separated from the lower punching die in the vertically separated state simultaneously by the operation of the knockout device, the product 120
The outer burr 113 is carried out together with the outer burr 113, the product 120 is put into the chute 128, and the outer burr 113 is put into the chute 127. For this reason, it is possible to reduce the number of necessary dies by punching the outer burr and to improve the processing capacity by carrying out the product and the outer burr at the same time.
[0004]
However, in this conventional example 1, it is difficult to separate the product from the burr depending on the shape of the forged product, and in particular, it is difficult to separate the product from the outer burr and the middle burr in the flange part with a shaft. . In addition, the structure of the transfeeder device that conveys products and burrs becomes complicated, and a separate chute is required, which complicates the press structure and raises the manufacturing price.
[0005]
In view of the above circumstances, the present invention can reliably separate the outer burr and the middle burr even if it is difficult to separate the outer burr and the middle burr, such as a shaft flange part. An object of the present invention is to provide a forging press capable of conveying products and burrs without complicating the process.
[0006]
[Means for Solving the Problems]
The forging press according to claim 1 is a forging in which raw materials are sequentially fed to a plurality of molds and are finally punched to simultaneously punch out the middle burr in the center of the product and the annular outer burr on the outer periphery of the product. A press, a lower base plate, a lower blade holder fixed to the lower base plate and formed with a drop hole for dropping the inner burr, and fixed to the lower blade holder, supporting the product from the lower surface, A lower blade having an inner peripheral blade portion for punching the inner burr and an outer peripheral blade portion for punching the outer burr, an upper punch holder that can be raised and lowered, and a punch that is incorporated in the upper punch holder to punch the intermediate burr An upper punch, a product presser that is assembled into the upper punch holder and presses the product from the upper surface when lowered, an upper blade formed on the upper punch holder for punching the outer burr, and the lower blade and shape to beauty before Symbol on the blade Is composed of a cutting blade for cutting the outer burr circumferentially Direction, the cutting blade, in the outer periphery of the lower knife, and a plurality of lower cutting blades disposed at intervals in the circumferential direction The lower surface of the upper blade comprises a plurality of upper cutting blades provided in a circumferential direction, and the lower cutting blade and the upper cutting blade have an annular outer burr at a plurality of locations in the circumferential direction. It is characterized by shearing in the radial direction .
[ 0007]
According to the invention of claim 1, in the punching process, the outer burr is punched from the product by the upper blade and the lower blade, and the intermediate burr is punched from the product by the upper punch and the lower blade. Punched out. Then, the annular outer burr is divided into two or more in the peripheral direction by the dividing blade, and falls as it is. For this reason, since it is not necessary to convey burrs with a transfer feeder, the structure of the forging press is simplified, the product can be continuously stamped, and the productivity is improved. Further , since the annular outer burr is sheared by the upper and lower cutting blades, it is surely divided into a plurality of pieces and can be easily discharged by a chute or the like.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, a forging press according to an embodiment of the present invention will be described with reference to the drawings.
1 is a longitudinal sectional view of a punching die part in a forging press according to an embodiment of the present invention, FIG. 2A is a perspective view of a lower cutting blade, FIG. 1B is a perspective view of an upper cutting blade, and FIG. FIG. 3 is a perspective view showing a shearing operation, FIG. 3 is a process diagram in the forging press of FIG. 1, FIG. 4 is a detailed explanatory view of a deburring process, and FIG. 5 is a deburring mechanism of the forging press according to another embodiment of the present invention. It is explanatory drawing of.
[0009]
The punching die shown in FIG. 1 is used for a forging press in which a raw material is formed into a plurality of dies in order, and is a die used for deburring that is the final process.
In the figure, G is a product, which is a flange component with a shaft in which a disc-shaped flange portion and a shaft-shaped shaft portion are integrated. This product G is finally molded by punching an annular outer burr a and a central cylindrical burr b.
[0010]
In FIG. 1, reference numeral 1 denotes a base plate, and a lower blade holder 2 is fixed on the base plate 1. A drop hole 3 is formed in the center of the lower blade holder 2 for dropping an intermediate burr b, which will be described later.
A lower blade 4 is fixed to the lower blade holder 2. The lower blade 4 supports the product G from the lower surface, and is formed with an inner peripheral blade portion 4b around a punching hole for punching the intermediate burr b and an outer peripheral blade portion 4a for punching the outer burr a. .
On the outer periphery of the lower blade 4, a lower cutting blade 21 described in detail later for cutting the outer burr a is disposed.
[0011]
Reference numeral 6 denotes an upper punch holder which can be moved up and down by a lifting mechanism (not shown). The upper punch holder 6 incorporates members to be described later. Reference numeral 7 denotes an upper punch whose upper end is fixed to the upper punch holder 6. Reference numeral 8 denotes a product presser, to which a downward compressive force is applied by a spring 11 externally attached to the guide rod 9. In the upper punch 6 holder, the lower surface of the outer portion of the product presser 8 is the upper blade 12.
The outer burr a is cut off from the product G by the outer peripheral edge 4 a of the upper blade 12 and the lower blade 4, and the intermediate burr b is punched out of the product G by the upper punch 7 and the inner peripheral edge 4 b of the lower blade 4. It has become.
[0012]
Te present invention smell, minute Danha are provided on both of the upper blade 12 and lower blade 4.
[0013]
Next, an example of the cutting blade will be described.
FIG. 2A shows the lower cutting blade 21 formed on the outer periphery of the lower blade 4. The lower blade cutting blade 21 is a member having an L-shaped cross section, and is fixed to the circumferential portion of the lower blade 4 at equally spaced positions in the circumferential direction. The blade surface at the upper end is along the radial direction. FIG. 2B shows the upper cutting blade provided on the lower surface of the upper blade 12. The upper cutting blade is configured by combining the upper fixed blade 22 and the upper movable blade 23.
The upper fixed blade 22 is a square member having a quarter circumference and is used in combination of two. A pressing piece 22a that the lower surface of the upper fixed blade 22 presses the burr after punching toward the lower cutting blade 21.
(See (1) in FIG. 4). The lower surface of the upper blade 12 is fixed at a symmetrical position with respect to the center point.
The upper movable blade 23 is also a quarter-circular cross-sectional plate member, and is used in a combination of two. And it is suspended with the spring 24 from the lower surface of the upper blade 12, is symmetrical with respect to a center point, and is arrange | positioned between a pair of said upper fixed blades 22. FIG.
[0014]
The upper fixed blade 22 can be lowered between the lower cutting blades 21 and the upper movable blade 23 can be moved up and down together with the upper fixed blade 22. The outer burr a is clamped to the upper surface of the lower dividing blade 21 by the reaction force of the spring 24.
Then, as shown in FIGS. 4 (III) and 4 (IV), the upper fixed blade 22 is capable of shearing the outer burr a by sliding the blade surfaces against the lower cutting blade 21 like scissors. it can. As a result, as will be described later, the outer burr a is divided into four pieces.
[0015]
Next, the forming action in the forging press of this embodiment will be described.
In FIG. 3, I, II, and III indicate a crushing process I, a roughing process II, and a finishing process III. In each process, the material M is a crushing material M1, a roughing material M2, and a finishing material M3. It will be shaped like this. The outer shape of the finishing material M3 is completed as the product G, and the outer burr a and the inner burr b can be punched out.
Then, in the punching process indicated by reference numeral IV, burring is performed by the punching die shown in FIG. 1 (simultaneous with the outer burr a and the middle burr b).
[0016]
The punching process will be described in more detail with reference to FIG.
The outer burr a is punched from the product G by the lowering of the upper fixed blade 22 and the upper movable blade 23 constituting the upper blade 12 to become an annular outer burr a. The outer burr a is placed on the upper surface of the lower cutting blade 21 as shown in FIG.
Subsequently, when both the upper fixed blade 22 and the upper movable blade 23 are lowered, the upper movable blade 23 is held stationary with the outer burr a interposed between the lower cutting blade 21 and the upper fixed blade as shown in FIG. Only the blade 22 is lowered and sheared by the upper fixed blade 22 and the lower dividing blade 21 as shown in FIG. (III), and the outer burr a is divided into four pieces. As a result, as shown in FIG. (IV), of the four pieces a1 to a4, the two pieces a1 and a3 remain on the lower cutting blade 21, and the remaining two pieces a2 and a4 fall as they are. Go. When the upper movable blade 23 is lifted and the restraint is lifted, the fragments a1 and a3 remaining on the lower cutting blade 21 are tilted and dropped because their center of gravity is off the support point. For this reason, the separated outer burrs a <b> 1 to a <b> 4 can be discharged out of the machine by the chute without using a special conveying device.
[0017]
Next, another embodiment of the present invention will be described.
In the above embodiment, the upper movable blade 23 operates integrally with the upper fixed blade 22 when punching burrs, and the bending force of the spring 24 is used to operate relative to the upper fixed blade 22 when dividing the burrs after punching. However, as shown in FIG. 5, it may be controlled by a built-in cylinder 24a.
Any cutting blade may be used in the present invention as long as the outer burr a can be divided into a plurality of pieces. Therefore, in the said embodiment, the parting blade which shears was used, However, You may use the parting blade of the type which pushes and cuts instead.
Further, the number of outer burrs a can be arbitrarily divided, and two or more can be arbitrarily selected.
[0018]
【The invention's effect】
According to the invention of claim 1, since the annular outer burr is divided into two or more in the circumferential direction, it is not necessary to fall down as it is and to transfer the burr by the transfer feeder, so that the structure of the forging press is simplified. Product can be stamped continuously and productivity is improved. Further , it is surely divided into a plurality of pieces by shearing, and can be easily discharged by a chute or the like.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a punching die part in a forging press according to an embodiment of the present invention.
2A is a perspective view of a lower cutting blade, FIG. 2B is a perspective view of an upper cutting blade, and FIG. 2C is a perspective view showing a shearing operation.
FIG. 3 is a process diagram in the forging press of FIG. 1;
FIG. 4 is a detailed explanatory view of a deburring process.
FIG. 5 is an explanatory view of a deburring mechanism of a forging press according to another embodiment of the present invention.
6 is a front view of a main part of a forging press of Conventional Example 1. FIG.
FIG. 7 is an explanatory diagram of a product and outer burr carrying-out operation in Conventional Example 1.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base plate 2 Lower blade holder 3 Drop hole 4 Lower blade 6 Upper punch holder 7 Upper punch 8 Product presser 9 Guide rod 11 Spring 12 Upper blade 21 Lower cutting blade 22 Upper fixed blade 23 Lower movable blade
22a Push piece 24 Spring

Claims (1)

複数個の金型に素材を順送りして成形し、最後に打抜型で、製品中央の中バリと製品外周の環状の外バリとを同時に打抜くようにした鍛造プレスであって、
下ベースプレートと、
該下ベースプレートに固定された、前記内バリを落下させる落下孔が形成された下刃ホルダーと、
前記下刃ホルダーに固定され、前記製品を下面から支えると共に、前記内バリを打抜く内周刃部および前記外バリを打抜く外周刃部を備えた下刃と、
昇降自在な上パンチホルダーと、
該上パンチホルダーに組込まれ、前記中バリを打抜くための上パンチと、
前記上パンチホルダーに組込まれ、下降時に製品を上面から押える製品押えと、
前記上パンチホルダーに形成された、前記外バリを打抜くための上刃と、
前記下刃および前記上刃に形成された、前記外バリを円周方向に分断する分断刃とからなり
前記分断刃が、前記下刃の外周において、円周方向に間隔をあけて配置された複数個の下分断刃と、前記上刃の下面において、円周方向に区切って設けられた複数個の上分断刃とからなり、この下分断刃と上分断刃が環状の外バリを、円周方向の複数個所において、半径方向にシャーリングするものである
ことを特徴とする鍛造プレス
It is a forging press in which raw materials are sequentially fed to a plurality of molds, and finally, a punching die is used to simultaneously punch a middle burr in the center of the product and an annular outer burr on the outer periphery of the product,
A lower base plate,
A lower blade holder fixed to the lower base plate and having a drop hole for dropping the inner burr;
A lower blade that is fixed to the lower blade holder, supports the product from the lower surface, and includes an inner peripheral blade portion that punches the inner burr and an outer peripheral blade portion that punches the outer burr.
An upper punch holder that can be raised and lowered,
An upper punch assembled into the upper punch holder and for punching out the intermediate burr;
A product presser that is assembled into the upper punch holder and presses the product from the top when lowered,
An upper blade for punching the outer burr formed on the upper punch holder;
Formed in the lower blade and before Symbol upper blade consists of a cutting blade for cutting the outer burr circumferentially Direction,
A plurality of lower cutting blades arranged at intervals in the circumferential direction on the outer periphery of the lower blade; and a plurality of lower cutting blades provided in a circumferential direction on the lower surface of the upper blade. A forging press comprising an upper cutting blade, wherein the lower cutting blade and the upper cutting blade shear the annular outer burr radially in a plurality of locations in the circumferential direction .
JP2001219016A 2001-07-19 2001-07-19 Forging press Expired - Fee Related JP3764353B2 (en)

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