JP2004512955A - Hot metal extrusion bending machine - Google Patents

Hot metal extrusion bending machine Download PDF

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Publication number
JP2004512955A
JP2004512955A JP2002539079A JP2002539079A JP2004512955A JP 2004512955 A JP2004512955 A JP 2004512955A JP 2002539079 A JP2002539079 A JP 2002539079A JP 2002539079 A JP2002539079 A JP 2002539079A JP 2004512955 A JP2004512955 A JP 2004512955A
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speed
extrusion
bending
punch
bending machine
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チン，インタイ
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チン，インタイ
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/01—Extruding metal; Impact extrusion starting from material of particular form or shape, e.g. mechanically pre-treated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/12—Extruding bent tubes or rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/08—Dies or mandrels with section variable during extruding, e.g. for making tapered work; Controlling variation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

本発明は、２本以上の押出パンチ、２つ以上の孔を設けた多孔コンテナ、油圧装置、パンチの相対速度調節装置、及び支持台からなる押出曲げ機であって、２つ以上の加熱された金属ビレットを押出しながら製品を曲げることのできる金属押出曲げ機に関する。即ち、本発明の押出曲げ機では、２つ以上の加熱された金属ビレットが、傾斜ダイ内で金属融合と同時に該ダイの出口から一つの製品として押出される時、２本以上の押出パンチの相対的な移動速度に因るダイの出口断面における押出の速度勾配により、押出加工と同時に曲げ加工が可能となる。従って、本発明の押出曲げ機では、表面上の皺や折り曲げ、断面の歪み、肉厚バラツキ等の欠点のない、金属曲管又は金属曲棒を製造することができる。
【選択図】図１The present invention relates to an extrusion bending machine comprising two or more extrusion punches, a perforated container provided with two or more holes, a hydraulic device, a relative speed control device for punches, and a support table, wherein two or more heated punches are provided. The present invention relates to a metal extrusion bending machine capable of bending a product while extruding a metal billet. That is, in the extrusion bending machine of the present invention, when two or more heated metal billets are extruded as one product from the exit of the die at the same time as the metal fusion in the inclined die, two or more extrusion punches are formed. The extrusion speed gradient at the exit cross section of the die due to the relative speed of movement allows for bending as well as extrusion. Therefore, with the extrusion bending machine of the present invention, it is possible to manufacture a bent metal tube or bent metal bar having no defects such as wrinkles and bending on the surface, distortion of the cross section, and variations in thickness.
[Selection diagram] Fig. 1

Description

【０００１】
技術分野
本発明は２つ以上の押出パンチ、２つ以上の孔を設けたコンテナ、可変速度調節装置、油圧装置、及び支持台からなる押出曲げ機であって、より詳しくは、２つ以上の加熱された金属ビレットを押出と同時に曲げることができる熱間金属押出曲げ機に関する。
【０００２】
本発明の特徴は、２つ以上の加熱された金属ビレットが、傾斜形押出ダイ内で金属融合と同時に上記ダイの出口から一つの製品として押出される時、２つ以上の押出パンチ間の相対的な移動速度によるダイ出口端面における速度勾配により、押出加工と同時に曲げ加工を行えることにある。
【０００３】
背景技術
任意の断面形状を有する金属棒や金属管を押出加工する時、従来の押出機では、断面の形状や位置に応じて生じるアンバランスな曲げが一つの押出欠陥と見なされ、これをダイのランド部でもって防ぐことが注目されている。しかし、かかる曲げの原因となる押出ダイの出口断面上の速度勾配を用いて押出及び曲げが同時に行われるようにすれば、様々な断面形状の押出製品を曲げることのできる押出曲げ機が得られる。ところが、従来の熱間金属押出機では、コンテナに単一の孔が設けられるため、ビレットの移動速度に差を発生させることができず、押出ダイの出口断面における速度勾配が生成し難い。従って、押出加工中に曲率及び曲げ方向を調節することで、ダイの出口断面において様々な速度勾配を生成し得る構造及び機能を備えた熱間金属押出機の発明が求められていた。
【０００４】
発明の開示
上記のような問題を解決するために、本発明では、２つ以上の孔を設けた多孔コンテナの各孔に２つ以上の金属ビレットをそれぞれ同数の孔に装入して夫々異なる速度の押出パンチで押すと、各金属ビレットの移動速度に差異が生じるようになる。この時、コンテナの各孔から出た夫々異なる速度の加熱された金属ビレットは、傾斜ダイの中で金属融合過程と共に押出され、上記のような金属ビレットの移動速度の差による速度勾配は、上記ダイの出口断面において曲げを発生させる。
【０００５】
上記の本発明による金属押出曲げ機は、２つ以上の孔を設けたコンテナ、各孔に夫々異なる速度で装入される押出パンチ、該押出パンチをそれぞれ異なる速度で押す油圧装置、パンチの相対速度調節装置、及び支持台で構成される。
【０００６】
ここで曲率の調整は、２本以上の押出パンチの中で左右対称をなす押出パンチの相対速度を調節して行われる。例えば、対称を成す一方の押出パンチの速度を一定速度にし、もう一方のパンチの速度を異にして曲率を変更することができ、対称をなす一方の押出パンチの速度を、対称をなすもう一方の押出パンチの速度より速く若しくは遅くして曲げ方向を変更することができる。
【０００７】
また、対称をなす押出パンチの相対速度をうまく調整して、曲げが生じない相対速度の差異から曲げ角が直角となる相対速度の差異まで曲率を調整すると、任意の断面形状を有する金属棒や金属管を、回転曲げ機で直棒や直管を直角に曲げるような曲げ加工の効果が得られる。これにより、回転曲げ機による直角曲げ加工時に生じ易い曲げ断面及び肉厚のバラツキや製品表面の皺のない曲げ加工が可能になる。
【０００８】
また、多孔コンテナにおける２つ以上の孔の中で左右対称をなす孔の相対的な直径の差異を調整することで、曲率を調整することができる。例えば、対称をなす一方の孔のサイズを一定にし、もう一方の孔のサイズを異にすると、パンチの相対速度に差異がないとしても一定の曲率を持つ製品を押出すことができる。
【０００９】
本発明の熱間金属押出曲げ機は、上記のような押出曲げ加工のために、パンチの移動速度をそれぞれ異にし得る油圧シリンダの配置及び速度の調節、押出パンチの個数、ラム・クロスヘッドの構造、コンテナの構造などを、従来の熱間金属押出機とは異に構成した点に特徴がある。
【００１０】
発明を実施するための最良の形態
以下、４本の押出パンチ及び４つの孔を有するコンテナを用いて押出曲げを行った本発明の実施例を添付の図面に基づき詳しく説明する。
【００１１】
図１に示す熱間金属押出曲げ機は、一定速度油圧シリンダＡ；一定速度ラム・クロスヘッドＢ；可変速度油圧シリンダＣ；可変速度ラム・クロスヘッドＤ；多孔加熱コンテナホルダーＥ；加熱ダイホルダーＦ；支持台Ｇ；パンチの相対速度調節装置Ｈ；油圧装置Ｉ；図２の一定速度パンチ１；可変速度パンチ２；多孔コンテナ３；傾斜ダイ４；及び図３の傾斜プラグ５；からなる。
【００１２】
次に、熱間金属押出曲げ機の押出曲げ作用を添付の図面に基づき説明する。図４に示すように、上下２台の一定速度油圧シリンダＡのラムが移動する時、該ラムに直角に連結された一定速度ラム・クロスヘッドＢに取り付けられている一定速度パンチ１が移動する。この時、一定速度パンチ１の構造は、上下・左右の４本のパンチの中で左側の１本の可変速度パンチ２を除いた、上下の２本及び右側の１本の総３本で構成され、これらは一定速度油圧シリンダＡにより同じ速度で移動して多孔コンテナ３における上下の２つ及び右側の１つの孔に対して夫々装入されるようになっている。
【００１３】
この時、図５の中央に示す可変速度油圧シリンダＣのラムに直角に取り付けられた可変速度ラム・クロスヘッドＤが、可変速度調節装置Ｈによって可変速度で移動する時、上記可変速度ラム・クロスヘッドＤに付着した１本の可変速度パンチ２は、一定速度ラム・クロスヘッドＢを貫通して一定速度パンチ１とは別途に移動し得る構造となっているため、該一定速度パンチ１の速度より速いか遅くなるよう別個に調整することができる。
【００１４】
図２に示す金属曲棒の押出曲げ過程において、可変速度パンチ２の速度が一定速度パンチ１のそれより遅くなると、上記可変速度パンチ２によって移動する左方向のビレット７は、コンテナ内で右方向のビレット６より遅く移動し、傾斜ダイ４を通過する時に金属的に融合しながら左方向へと曲がって押出される。この時、上下のパンチは相対速度において差異がないため、上下方向に曲がることなく左方向にのみ曲がって押出される。また、可変速度パンチ２の速度と一定速度パンチ１の相対速度を調節することにより、曲げ程度、即ち、曲率及び曲げ方向を調整することができる。
【００１５】
尚、図３に示す金属曲管の押出曲げ過程においては、可変速度パンチ２の速度を遅くした場合、可変速度パンチ２の取り付けられた左方向の加熱ビレット７は、コンテナ内で右方向の加熱ビレット６より遅く移動するようになり、傾斜ダイ４と傾斜プラグ５との間を通過する時には、金属的に融合しながら左方向へと曲がって押出される。この時、上下のパンチは相対速度において差異がないため、上下方向に曲がることなく左方向にのみ曲がって押出される。
【００１６】
反対に、可変速度パンチ２の速度を速めた場合は、左方向のビレット７が速く移動して上記の押出曲げ過程における曲げ方向とは反対である右方向へと曲がって押出される。もし、可変速度パンチ２の速度と一定速度パンチ１の速度とを一致させた場合には、曲げは発生せず直線形に押出され、従来の押出加工と同様に一般の直棒や直管が加工される。
【００１７】
このように、直線形に押出していて一時的に可変速度パンチ２の速度を低めるか速めて曲げてから、可変速度パンチ２の速度と一定速度パンチ１の速度とを一致させて押出すと、再び直線形に押出されるようになるため、図７のような一般の回転曲げ機と同様な効果の曲げ加工製品が得られる。即ち、上記のように可変速度パンチ２の速度を一定速度パンチ１の速度より低めたり速めたりするか、或いは一致させることにより、図７のように様々な曲率の押出製品が加工され、種々の断面形状を有する押出製品の曲線化が可能になる。
【００１８】
曲げ方向及び曲率を調整するための可変速度パンチ２の速度調節は、可変速度油圧シリンダＣに連結された可変速度調節装置Ｈ、及びコンピュータで制御される流量調整弁を備えた油圧装置Ｉにより行われる。
【００１９】
以上は、最も望ましい例として押出パンチのパンチ及び多孔コンテナの孔がともに４つである押出曲げ機であって、４つの加熱された金属ビレットを用いて押出し及び曲げを行った場合を挙げて説明したが、上記の構造が押出パンチのパンチ及び多孔コンテナの孔がともに２つ以上の押出曲げ機であるならば、本発明で成し遂げようとする技術的課題を達成し得るのは勿論である。
【００２０】
産業上の利用可能性
従来の回転曲げ機による曲げ加工では、異形材の場合は断面形状の変化が、また肉薄な管の場合は折り曲げや皺、肉厚バラツキなどの限界があった。
【００２１】
かかる短所を解消するために任意の断面形状を有する金属棒や金属管を押出加工と同時に曲げる新しい熱間金属押出曲げ機の発明により、断面の変化や表面に皺のない金属曲棒１００又は金属曲管２００を製造することができるようになった。
【００２２】
上記のように、従来の曲げ加工の限界を克服するための熱間金属押出曲げ機の発明は、従来の金属押出機の概念を乗り越えた新しい構造及び機能の複合塑性加工機械でもって押出加工と曲げ加工とを同時に施すことができるため、生産性の向上に貢献するところが至大である。更に、押出曲げ機における各押出パンチの相対速度を調節することにより、押出製品の曲率及び曲げ方向が調整でき、複雑な断面形状を有する種々の押出製品が得られるため、産業上の応用分野は多大である。
【図面の簡単な説明】
【図１】
本発明の熱間金属押出曲げ機の全体構造斜視図である。
【図２】
金属曲棒の押出曲げ過程の断面図である。
【図３】
金属曲管の押出曲げ過程の断面図である。
【図４】
一定速度ラム・クロスヘッド及び一定速度パンチの構造図である。
【図５】
可変速度ラム・クロスヘッド及び可変速度パンチの構造図である。
【図６】
多孔加熱コンテナホルダー及び多孔コンテナの構造図である。
【図７】
本発明で製造され得る金属曲棒及び金属曲管の一部例示図である。[0001]
TECHNICAL FIELD The present invention relates to an extrusion bending machine comprising two or more extrusion punches, a container having two or more holes, a variable speed control device, a hydraulic device, and a support. The present invention relates to a hot metal extrusion bending machine capable of bending a heated metal billet simultaneously with extrusion.
[0002]
A feature of the present invention is that when two or more heated metal billets are extruded as a single product from the exit of the inclined die at the same time as the metal is fused in the die, the relative position between the two or more extrusion punches is reduced. The advantage is that the bending process can be performed simultaneously with the extrusion process due to the speed gradient at the die exit end face due to the typical moving speed.
[0003]
BACKGROUND ART When extruding a metal rod or a metal tube having an arbitrary cross-sectional shape, in a conventional extruder, unbalanced bending generated according to the cross-sectional shape and position is regarded as one extrusion defect, and this is regarded as a die defect. Attention has been paid to prevent this with the land part. However, if extrusion and bending are performed simultaneously using the velocity gradient on the exit cross section of the extrusion die that causes such bending, an extrusion bending machine capable of bending extruded products having various cross-sectional shapes can be obtained. . However, in the conventional hot metal extruder, since a single hole is provided in the container, no difference can be generated in the moving speed of the billet, and it is difficult to generate a speed gradient at the exit cross section of the extrusion die. Therefore, there is a need for an invention of a hot metal extruder having a structure and function capable of generating various velocity gradients at the exit cross section of a die by adjusting the curvature and the bending direction during the extrusion.
[0004]
DISCLOSURE OF THE INVENTION In order to solve the above-described problems, in the present invention, two or more metal billets are charged into each hole of a perforated container provided with two or more holes in the same number of holes, respectively, so that different ones are used. Pressing with a speed extrusion punch causes a difference in the moving speed of each metal billet. At this time, the heated metal billets having different speeds from the respective holes of the container are extruded together with the metal fusion process in the inclined die, and the speed gradient due to the difference in the moving speeds of the metal billets is as described above. Bending occurs at the exit cross section of the die.
[0005]
The above-described metal extrusion bending machine according to the present invention comprises a container provided with two or more holes, an extrusion punch charged into each hole at a different speed, a hydraulic device for pressing the extrusion punch at a different speed, and a relative punch. It consists of a speed controller and a support.
[0006]
Here, the curvature is adjusted by adjusting the relative speed of the symmetrically extruded punches among two or more extruded punches. For example, it is possible to change the curvature of one of the symmetrical extrusion punches to a constant speed and the speed of the other punch to a different speed, and to change the speed of one of the symmetrical extrusion punches to the other. The bending direction can be changed faster or slower than the extrusion punch speed.
[0007]
Also, by properly adjusting the relative speed of the symmetric extrusion punch and adjusting the curvature from the difference in relative speed at which bending does not occur to the difference in relative speed at which the bending angle becomes a right angle, a metal rod having an arbitrary cross-sectional shape can be obtained. The effect of bending a metal pipe by bending a straight rod or a straight pipe at a right angle with a rotary bending machine can be obtained. Accordingly, it is possible to perform a bending process that is free from a variation in a bending cross section and a wall thickness and a wrinkle on a product surface, which are likely to occur during a right-angle bending process by a rotary bending machine.
[0008]
Further, the curvature can be adjusted by adjusting the difference between the relative diameters of the symmetrical holes among two or more holes in the multi-hole container. For example, if the size of one symmetric hole is made constant and the size of the other hole is made different, a product having a constant curvature can be extruded even if there is no difference in the relative speed of the punch.
[0009]
The hot metal extrusion bending machine of the present invention, for the above-described extrusion bending work, adjusts the arrangement and speed of hydraulic cylinders that can make the moving speed of the punch different, the number of extrusion punches, the number of ram crossheads. It is characterized in that the structure, the structure of the container and the like are different from those of the conventional hot metal extruder.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention in which extrusion bending is performed using a container having four extrusion punches and four holes will be described in detail with reference to the accompanying drawings.
[0011]
The hot metal extrusion bending machine shown in FIG. 1 includes a constant speed hydraulic cylinder A; a constant speed ram crosshead B; a variable speed hydraulic cylinder C; a variable speed ram crosshead D; a perforated heating container holder E; Support base G; punch relative speed control device H; hydraulic device I; constant speed punch 1 in FIG. 2; variable speed punch 2; multi-hole container 3; inclined die 4; and inclined plug 5 in FIG.
[0012]
Next, the extrusion bending action of the hot metal extrusion bending machine will be described with reference to the accompanying drawings. As shown in FIG. 4, when the rams of the two upper and lower constant speed hydraulic cylinders A move, the constant speed punch 1 attached to the constant speed ram crosshead B connected at right angles to the rams moves. . At this time, the structure of the constant-speed punch 1 is composed of a total of three upper and lower punches and one right-side punch, excluding one variable speed punch 2 on the left side, among four punches on the upper and lower sides and left and right. These are moved at the same speed by a constant-speed hydraulic cylinder A and are charged into two upper and lower holes and one right hole in the multi-aperture container 3 respectively.
[0013]
At this time, when the variable speed ram crosshead D mounted at a right angle to the ram of the variable speed hydraulic cylinder C shown in the center of FIG. Since the single variable speed punch 2 attached to the head D has a structure that can move separately from the constant speed punch 1 through the constant speed ram crosshead B, the speed of the constant speed punch 1 Can be adjusted separately to be faster or slower.
[0014]
When the speed of the variable speed punch 2 is lower than that of the constant speed punch 1 in the extrusion bending process of the metal curved bar shown in FIG. 2, the left billet 7 moved by the variable speed punch 2 moves rightward in the container. It moves slower than the billet 6 and bends to the left while being metallically fused when passing through the inclined die 4 and is extruded. At this time, since the upper and lower punches have no difference in relative speed, they are bent and extruded only to the left without bending in the vertical direction. Further, by adjusting the relative speed between the variable speed punch 2 and the constant speed punch 1, the bending degree, that is, the curvature and the bending direction can be adjusted.
[0015]
In the extrusion bending process of the bent metal tube shown in FIG. 3, when the speed of the variable speed punch 2 is reduced, the leftward heating billet 7 to which the variable speed punch 2 is attached is heated rightward in the container. It moves slower than the billet 6, and when it passes between the inclined die 4 and the inclined plug 5, it bends to the left while being metallically fused and is extruded. At this time, since the upper and lower punches have no difference in relative speed, they are bent and extruded only to the left without bending in the vertical direction.
[0016]
Conversely, when the speed of the variable speed punch 2 is increased, the billet 7 in the left direction moves quickly and is bent and extruded rightward, which is opposite to the bending direction in the above extrusion bending process. If the speed of the variable speed punch 2 and the speed of the constant speed punch 1 are made to coincide with each other, they are extruded in a straight line without bending, and a general straight rod or straight pipe is formed similarly to the conventional extrusion process. Processed.
[0017]
As described above, when the extrusion is performed linearly and the speed of the variable speed punch 2 is temporarily reduced or accelerated, and then extruded while the speed of the variable speed punch 2 and the speed of the constant speed punch 1 are matched, Since it is extruded straight again, a bent product having the same effect as that of a general rotary bending machine as shown in FIG. 7 can be obtained. That is, as described above, by making the speed of the variable speed punch 2 lower or faster than or equal to the speed of the constant speed punch 1, extruded products having various curvatures are processed as shown in FIG. It is possible to curve an extruded product having a cross-sectional shape.
[0018]
The speed adjustment of the variable speed punch 2 for adjusting the bending direction and the curvature is performed by a variable speed adjusting device H connected to a variable speed hydraulic cylinder C and a hydraulic device I having a flow control valve controlled by a computer. Will be
[0019]
The above is a description of the most desirable example of an extrusion bending machine in which both the punch of the extrusion punch and the hole of the porous container have four holes, and the case where the extrusion and bending are performed using four heated metal billets. However, it is needless to say that if the above-mentioned structure is an extruder in which both the punch of the extrusion punch and the hole of the perforated container are two or more, the technical problem to be achieved by the present invention can be achieved.
[0020]
Industrial applicability Bending by a conventional rotary bending machine has a change in cross-sectional shape in the case of a deformed material, and has a limit such as bending, wrinkling, and thickness variation in a thin tube.
[0021]
In order to eliminate such disadvantages, the invention of a new hot metal extruder which simultaneously bends a metal rod or a metal tube having an arbitrary cross-sectional shape at the same time as the extruding process enables the metal bent bar 100 or metal having no change in cross-section and wrinkles on the surface. The curved tube 200 can now be manufactured.
[0022]
As described above, the invention of the hot metal extrusion bending machine for overcoming the limitations of the conventional bending process is based on the extrusion and the composite metal working machine having a new structure and function that surpasses the concept of the conventional metal extrusion machine. Since bending can be performed at the same time, it greatly contributes to improvement in productivity. Furthermore, by adjusting the relative speed of each extrusion punch in the extrusion bending machine, the curvature and bending direction of the extruded product can be adjusted, and various extruded products having a complicated cross-sectional shape can be obtained. It is enormous.
[Brief description of the drawings]
FIG.
BRIEF DESCRIPTION OF THE DRAWINGS It is a whole structure perspective view of the hot metal extrusion bending machine of this invention.
FIG. 2
It is sectional drawing of the extrusion bending process of a metal curved bar.
FIG. 3
It is sectional drawing of the extrusion bending process of a metal curved tube.
FIG. 4
It is a structural diagram of a constant speed ram crosshead and a constant speed punch.
FIG. 5
It is a structural diagram of a variable speed ram crosshead and a variable speed punch.
FIG. 6
It is a structural diagram of a multi-hole heating container holder and a multi-hole container.
FIG. 7
It is a partial illustration of a metal bent bar and a metal bent tube which can be manufactured by the present invention.

Claims (7)

２つ以上の加熱された金属ビレットが傾斜ダイの中で金属融合しながら、各ビレットの流入速度の差異により押出加工中にダイの出口において曲げが生じるようにした傾斜ダイ４及び傾斜プラグ５と、これらを挿入して加熱し得る加熱ダイホルダーＦとを取り付けた熱間金属押出曲げ機。An inclined die 4 and an inclined plug 5 in which two or more heated metal billets are fused together in the inclined die while the difference in the inflow speed of each billet causes bending at the exit of the die during extrusion. , A hot metal extrusion bending machine equipped with a heating die holder F capable of inserting and heating them. ２つ以上の孔から装入された２本以上の押出パンチの速度、及び左右孔の相対的なサイズにより、各ビレットの移動速度に差異を発生させ、傾斜プラグ５が取り付けられる２つ以上の孔を設けた多孔コンテナ３、及び該多孔コンテナ３を装着して加熱し得る多孔加熱コンテナホルダーＥを取り付けた熱間金属押出曲げ機。Depending on the speed of two or more extrusion punches loaded from two or more holes and the relative size of the left and right holes, a difference is generated in the moving speed of each billet, and two or more to which the inclined plug 5 is attached. A hot metal extrusion bending machine equipped with a perforated container 3 provided with holes and a perforated heating container holder E capable of mounting and heating the perforated container 3. コンテナの２つ以上の孔に嵌入される２本以上のパンチにおいて、２台の一定速度油圧シリンダＡに連結された一定速度ラム・クロスヘッドＢのパンチホルダーに共に固定されて同じ速度で移動する３本の一定速度パンチ１、可変速度油圧シリンダＣに連結された可変速度ラム・クロスヘッドＤのパンチホルダーに固定されて可変速度で移動可能な１本の可変速度パンチ２、及びこれらを装着した熱間金属押出曲げ機。In two or more punches fitted into two or more holes of the container, both punches are fixed to a punch holder of a constant speed ram crosshead B connected to two constant speed hydraulic cylinders A and move at the same speed. Three fixed speed punches 1, one variable speed punch 2 fixed to a punch holder of a variable speed ram crosshead D connected to a variable speed hydraulic cylinder C and movable at a variable speed, and these mounted. Hot metal extrusion bending machine. 一定速度油圧シリンダＡ及び可変速度油圧シリンダＣに連結され、一定速度ラム・クロスヘッドＢと可変速度ラム・クロスヘッドＤとをそれぞれ別々に押すようコンピュータで制御される流量弁で構成された油圧装置Ｉ、及びこれを取り付けた熱間金属押出曲げ機。A hydraulic device connected to a constant speed hydraulic cylinder A and a variable speed hydraulic cylinder C, and configured with a flow valve controlled by a computer so as to press the constant speed ram crosshead B and the variable speed ram crosshead D separately. I, and a hot metal extrusion bending machine to which it is attached. 可変速度パンチ２の移動速度を一定速度パンチ１の速度より速めるか若しくは低めることで、押出の進行中に曲率及び曲げ方向を製品の長さに応じて任意に調整し得る可変速度調節装置Ｈ、及びこれを取り付けた熱間金属押出曲げ機。By increasing or decreasing the moving speed of the variable speed punch 2 from the speed of the constant speed punch 1, a variable speed adjusting device H capable of arbitrarily adjusting the curvature and the bending direction according to the length of the product during the progress of extrusion. And a hot metal extrusion bending machine equipped with the same. 一定速度パンチ１と可変速度パンチ２との相対的な移動速度の差異、コンテナにおける左右の孔の相対的な直径サイズの差異、及び傾斜ダイ４と傾斜プラグ５との傾斜面出入口における偏心の方向及びサイズにより、曲げ方向及び曲率を調整し得る方法で作動する熱間金属押出曲げ機。Difference in relative moving speed between constant speed punch 1 and variable speed punch 2, difference in relative diameter size of left and right holes in container, and direction of eccentricity at inclined plane entrance and exit of inclined die 4 and inclined plug 5 And a hot metal extrusion bending machine that operates in such a way that the bending direction and curvature can be adjusted according to the size and size. 入力された押出製品の曲げ形状に応じてコンピュータで制御される可変速度調節装置Ｈでもって、様々な曲げ方向及び曲率を有する任意の断面形状の金属曲棒１００及び金属曲管２００を加工し得る熱間金属押出曲げ機。With the variable speed adjusting device H controlled by a computer in accordance with the bending shape of the extruded product input, the metal curved bar 100 and the metal curved tube 200 having arbitrary cross-sectional shapes having various bending directions and curvatures can be processed. Hot metal extrusion bending machine.
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