EP2295165B1 - Presse pour le pressage simultané brut et final / étampage - Google Patents

Presse pour le pressage simultané brut et final / étampage Download PDF

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Publication number
EP2295165B1
EP2295165B1 EP10176583.2A EP10176583A EP2295165B1 EP 2295165 B1 EP2295165 B1 EP 2295165B1 EP 10176583 A EP10176583 A EP 10176583A EP 2295165 B1 EP2295165 B1 EP 2295165B1
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EP
European Patent Office
Prior art keywords
mold
workpiece
press
finishing
plate
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.)
Active
Application number
EP10176583.2A
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German (de)
English (en)
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EP2295165A1 (fr
Inventor
Domenico Caggioli
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.)
Mecolpress SpA
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Mecolpress SpA
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Publication date
Application filed by Mecolpress SpA filed Critical Mecolpress SpA
Publication of EP2295165A1 publication Critical patent/EP2295165A1/fr
Application granted granted Critical
Publication of EP2295165B1 publication Critical patent/EP2295165B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/022—Special design or construction multi-stage forging presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B7/00—Presses characterised by a particular arrangement of the pressing members
    • B30B7/02—Presses characterised by a particular arrangement of the pressing members having several platens arranged one above the other

Definitions

  • the present invention relates to an apparatus for press forging with simultaneous intermediate forging and finishing/embossing.
  • end screw pressing machines including adjoining pressing dies, either longitudinally or transversely arranged, or also arranged on the press bottom plate in an offset relationship with respect to the axial pressing force of the press are conventionally used.
  • the heated material length is arranged on the roughing die, and is shaped or contoured by a first press stroke.
  • the thus processed workpiece is brought to the finishing die and finished by a second press stroke.
  • the aim of the present invention is to provide an apparatus for press forging with simultaneous intermediate forging and finishing/embossing allowing to overcome the above mentioned drawbacks of like prior pressing machines.
  • a main object of the invention is to provide such an apparatus allowing to fully eliminate anomalous stresses on the pressing machine construction.
  • Another object of the invention is to provide such an apparatus allowing to use a pressing construction having a pressing capability mating the maximum force required by the workpiece, without oversizing the press.
  • Another object of the present invention is to provide such an apparatus which, owing to its specifically designed features, is very reliable and safe in operation.
  • the apparatus comprises a bottom plate, to be clamped to a base plate on a press bed, two or more guide columns, a central middle movable plate and a top plate to be clamped to the press ram or slide, between the bottom plate and the middle movable plate being arranged a pair of workpiece finishing or intermediate forging half-molds, comprising a finishing or intermediate forging top half-mold and a finishing or intermediate forging bottom half-mold, between said middle plate and top plate being arranged a said pair of said workpiece intermediate forging or finishing half-molds constituted by a intermediate forging or finishing top half-mold and a intermediate forging bottom half-mold, the locating of said finishing or intermediate forging molds between said middle movable plate and bottom plate being an indifferent one.
  • finishing mold or die may be arranged between the middle movable plate and top plate, whereas the intermediate forging or finishing mold or die may be arranged between the middle movable plate and bottom plate while performing the same operating cycle, but with different locations of the molds or dies.
  • a heated piece length is deposited on the top mold or die with the middle plate bearing on or raised from the fixed bottom mold, after having performed the press stroke and during the raising movement of the press ram being simultaneously actuated a middle plate opening or raising system, with said press ram at the top and the movable mold bearing plate at the top, being driven a workpiece ejecting and raising member thereby taking the workpiece and immediately displacing it into the finishing bottom mold or die, simultaneously in said top mold or die being deposited a further heated piece length, said movable middle plate being fully lowered and being performed a press stroke, thereby providing a intermediate forging of said workpiece in the top mold pair and a simultaneously finishing/ intermediate forging in the bottom mold pair, the press operating cycle being then repeated by sequentially displacing the workpieces from the top mold to the bottom mold.
  • the roughing and finishing molds or dies are arranged one above the other, perfectly in axis or aligned with the press pushing or pressing axis, while eliminating any anomalous stress and allowing to use a unoversized press, with a pressing capability mating the maximum pressing force required by the workpiece being pressed.
  • the apparatus for press forging with simultaneous intermediate forging and finishing/embossing which has been generally indicated by the reference number 1, comprises a bottom plate 13 to be fixed to a base plate 14 on the basement 15 of the pressing apparatus.
  • the subject press apparatus further comprises two or more guide columns 10, a movable middle center plate 8 and a top plate 16 to be fixed to the ram or slide 12 of the press.
  • Said ram or slide 12 comprises a top ejecting device 6 for ejecting the workpiece.
  • a pair of half-molds for finishing or intermediately forging the workpiece comprising a top finishing half-mold, or a top intermediate forging half-mold 4 and a bottom finishing or intermediate forging half-mold 5.
  • the base plate 14 comprises an ejecting device 11 for ejecting the workpiece from the bottom mold or die 5.
  • a pair of workpiece intermediate forging or finishing half-molds comprising a top roughing or finishing half-mold 2 and a bottom intermediate forging or finishing half-mold 3.
  • the movable middle plate 8 comprises a dedicated ejecting device 9 for ejecting therefrom and raising the pressed workpiece to allow the latter to be taken.
  • the bottom plate 13 is affixed or clamped on the base plate 14 of the press, the top plate 16 being fixed or clamped to the press ram or slide 12.
  • the middle plate 8 slides on apparatus column guides 10 and being driven by driving cylinders 7 which may be either pneumatic, hydraulic cylinder or electrically-electronically driven system cylinders.
  • the movable middle plate 8, with the top finishing half-mold 4 and the bottom intermediate forging half-mold 3 is raised, upon a stroke of the press, to open the bottom molds or dies, so as to take the workpiece therefrom or load said workpiece thereinto.
  • the depositing and taking operation both of the heated piece length and the intermediately forged or finished piece may carried out either manually or by automatic, electronic, hydraulic or pneumatic systems.
  • the roughing mold or die may be arranged above the movable middle plate and the finishing mold may be arranged on the fixed bottom plate.
  • the heated length is arranged on the top mold with the middle plate 8 bearing on the fixed bottom mold.
  • the middle plate opening or raising system is simultaneously actuated.
  • the workpiece ejecting device With the press ram located at top position and the movable mold bearing plate in a raised condition, the workpiece ejecting device is so actuated as to allow the piece to be taken and immediately brought to the bottom finishing mold.
  • a new heated piece length is engaged in the top mold or die; the movable middle plate is fully lowered to perform a novel press stroke, thereby providing an intermediate forging of the workpiece engaged in the top mold pair while simultaneously providing a finishing operation in the bottom mold pair.
  • the operating cycle is repeated, by sequentially displacing or driving the workpieces from the top to the bottom mold.
  • the required pressing force will be gradually increased to the maximum finishing and embossing force, without any impacts between the press molds which would occur if the finishing operation would be carried out by a further dedicated press stroke.
  • the workpiece loading, taking and relocating and unloading system usually comprises automatically operated arms, thereby allowing a very quick operating cycle to be performed, to achieve, for each press stroke, a finished workpiece.
  • the apparatus system comprises moreover suitably designed channel patterns for thermo-adjusting the mold or die temperature, to hold the workpiece temperature constant.
  • the apparatus according to the present invention may operate by an automatic operating cycle to load-unload workpieces by using automatic electronic, hydraulic or pneumatic operating arms.
  • the first arm including a double gripper device, after having taken the heated piece length from the heating oven, will be preset for taking the finished workpiece.
  • the operating arm With the mold middle plate in a raised condition, the operating arm will engage and take the workpiece, while simultaneously the second operating arm will engage and remove the intermediately forged piece from the top mold or die.
  • the two operating arms will be immediately located the first at the top mold and the second at the bottom mold to deposit one the heated length into the top mold and the other intermediately forged piece into the finishing mold.
  • the first arm will unload the finished workpiece and take a new piece length to be reloaded.
  • the invention has provided an automatic apparatus for press forging with simultaneous intermediate forging and finishing/embossing in which, owing to the fact that the intermediate forging and finishing molds or dies are arranged onto one another in a perfectly axially aligned condition with the press pushing axis, will be practically eliminated any anomalous operating stress, thereby it will be possible to use a pressing machine having just the pressing capability necessary for the maximum pressing force on the workpiece.
  • the used materials, as well as the contingent size and shapes can be any, according on requirements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Claims (10)

  1. Dispositif de forgeage à la presse avec forgeage intermédiaire et finition/embossage simultanés, caractérisé en ce que ledit dispositif comprend une plaque de fond (13), destinée à être bridée sur une plaque de base (14) sur un bâti de presse (15), deux ou plusieurs colonnes de guidage (10), une plaque mobile médiane (8) centrale, une plaque supérieure (16) destinée à être bridée sur le piston de presse ou coulisseau (12), et deux paires de demi-moules, dans lequel :
    une première paire de demi-moules, pour forgeage intermédiaire, comprend un demi-moule supérieur de forgeage intermédiaire et un demi-moule inférieur de forgeage intermédiaire ; et une seconde paire de demi-moules, pour finition de la pièce, comprend un demi-moule supérieur de finition de pièce et un demi-moule inférieur de finition de pièce ;
    une de ces paires est agencée indifféremment entre la plaque de fond (13) et la plaque mobile médiane (8) ; l'autre de ces paires est agencée indifféremment entre ladite plaque médiane (8) et la plaque supérieure (16).
  2. Dispositif, selon la revendication 1, caractérisé en ce qu'il comprend en outre des vérins d'entraînement du type pneumatique, hydraulique ou entrainés électriquement et commandés électroniquement, pour entraîner et faire coulisser ladite plaque médiane (8) sur lesdites colonnes de guidage (10).
  3. Dispositif, selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend en outre un coulisseau (12) incluant un éjecteur supérieur de pièce (6), la plaque de base (14) incluant un éjecteur (11) pour éjecter la pièce du moule de fond (4,5), la plaque mobile médiane (8) incluant un dispositif éjecteur (9) pour éjecter et soulever une pièce moulée pour permettre à ladite pièce moulée d'être agrippée.
  4. Dispositif, selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend en outre une pluralité de canaux de réglage thermique pour maintenir une température de pièce à une valeur constante.
  5. Dispositif, selon une ou plusieurs des revendications précédentes, caractérisé en ce que ledit dispositif de presse est une presse à vis ou une presse excentrique ou mécanique, ladite presse étant entraînée par des moyens d'entraînement de presse incluant des moteurs électriques, des moteurs à couple, des moteurs sans balais, et par des systèmes d'entraînement hydrauliques.
  6. Dispositif, selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend en outre des bras commandés électroniquement hydrauliques ou pneumatiques pour actionner l'appareil avec un cycle de chargement/déchargement de pièce automatique, dans lequel lesdits bras incluent de préférence deux bras indépendants, un premier bras ayant un dispositif d'agrippement double pour agripper, avec la plaque médiane (8) du moule dans un état soulevé, ladite pièce, ledit second bras agrippant simultanément une pièce forgée intermédiairement depuis le moule supérieur (2, 3) ou inférieur (4,5), ledit premier bras étant positionné au niveau dudit moule supérieur (2, 3) ou inférieur (4,5), ledit second bras étant positionné au niveau du moule inférieur (4,5) ou supérieur (2, 3) pour déposer un tronçon chauffé dans le gabarit de moule supérieur et une pièce forgée intermédiairement dans un gabarit de moule de finition, ledit premier bras déchargeant une pièce finie et agrippant un autre tronçon à recharger.
  7. Procédé réalisé sur un dispositif de forgeage à la presse selon l'une quelconque des revendications 1-6, caractérisé en ce que pour la première course de presse au début du fonctionnement de la presse, une billette chauffée est déposée sur le moule supérieur (2, 3) ou inférieur (4,5) avec la plaque médiane (8) supportée sur ou soulevée depuis le moule inférieur (4,5) fixe, après avoir réalisé la course de presse et pendant le mouvement de soulèvement d'un piston de presse (12) un système de soulèvement ou d'ouverture de plaque médiane (7, 10) étant simultanément actionné, avec ledit piston de presse (12) en haut et la plaque de support de moule mobile (8) en haut, un élément de soulèvement et d'éjection de pièce (9) étant entraîné prenant ainsi la pièce et la déplaçant immédiatement dans le moule inférieur ou supérieur de finition (2, 3, 4, 5), une billette encore chauffée étant déposée simultanément dans ledit moule inférieur ou supérieur de finition (2, 3, 4, 5), ladite plaque mobile (8) étant entièrement abaissée et une course de presse étant réalisée, fournissant ainsi un forgeage intermédiaire/une finition de la pièce dans la paire de moule supérieur (2, 3) et une finition/un forgeage intermédiaire dans la paire de moules inférieurs (4, 5), le cycle de fonctionnement de la presse étant ensuite répété en déplaçant séquentiellement les pièces depuis le moule supérieur (2, 3) vers le moule inférieur (4, 5).
  8. Procédé selon la revendication 7, caractérisé en ce que ladite plaque médiane mobile (8) est soulevée avec le demi-moule de finition supérieur (4) et le demi-moule inférieur (3) de forgeage intermédiaire après l'ouverture des moules inférieurs (4,5) pour permettre à la pièce d'être agrippée et chargée.
  9. Procédé selon les revendications 7 ou 8, caractérisé en ce que la billette chauffée et la pièce forgée de manière intermédiaire ou finie sont également déposées et agrippées manuellement ou déposées ou agrippées automatiquement comme commandé par des systèmes électroniques, hydrauliques ou pneumatiques.
  10. Procédé selon l'une quelconque des revendications 7-9, caractérisé en ce que, pendant les mouvements d'entrée et de sortie desdits bras vers/depuis lesdits moules (2, 3, 4, 5), lesdits moules sont lubrifiés par des dispositifs de lubrification supportés par lesdits bras.
EP10176583.2A 2009-09-15 2010-09-14 Presse pour le pressage simultané brut et final / étampage Active EP2295165B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI2009A001576A IT1395741B1 (it) 2009-09-15 2009-09-15 Apparecchiatura per lo stampaggio pezzo con sbozzatura e finitura coniatura simultanea al bilanciere e pressa.

Publications (2)

Publication Number Publication Date
EP2295165A1 EP2295165A1 (fr) 2011-03-16
EP2295165B1 true EP2295165B1 (fr) 2017-05-03

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EP10176583.2A Active EP2295165B1 (fr) 2009-09-15 2010-09-14 Presse pour le pressage simultané brut et final / étampage

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EP (1) EP2295165B1 (fr)
IT (1) IT1395741B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011077088A1 (de) * 2011-06-07 2012-12-13 Mahle International Gmbh Verfahren zur gleichzeitigen Herstellung eines ersten und zweiten Kolbenteils
CN102922764B (zh) * 2012-11-23 2015-01-07 上海运良锻压机床有限公司 推缸式液压螺旋压力机
CN103831380A (zh) * 2013-12-15 2014-06-04 无锡透平叶片有限公司 一种gh4169合金锻件的模锻成型工艺
CN108213205A (zh) * 2018-01-26 2018-06-29 芜湖金光汽车配件有限责任公司 一种加强模具

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723848A1 (de) * 1977-05-26 1978-12-07 Daimler Benz Ag Presse
DE19611611A1 (de) * 1996-03-23 1997-09-25 Schuler Pressen Gmbh & Co Presse
EP0919362A1 (fr) * 1997-11-28 1999-06-02 Vam Aerotecnica di Borghi Mauro Presse à matrices mûe par huile, ayant une poussée axiale verticale, équipée de plusieurs paires de matrices

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Publication number Publication date
IT1395741B1 (it) 2012-10-19
EP2295165A1 (fr) 2011-03-16
ITMI20091576A1 (it) 2011-03-16

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