EP3380314B1 - Procédé de fonctionnement d'une presse, en particulier d'une presse d'estampage à vilebrequin - Google Patents

Procédé de fonctionnement d'une presse, en particulier d'une presse d'estampage à vilebrequin Download PDF

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Publication number
EP3380314B1
EP3380314B1 EP16801194.8A EP16801194A EP3380314B1 EP 3380314 B1 EP3380314 B1 EP 3380314B1 EP 16801194 A EP16801194 A EP 16801194A EP 3380314 B1 EP3380314 B1 EP 3380314B1
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EP
European Patent Office
Prior art keywords
press
servo drive
mass
mass system
pressing force
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
EP16801194.8A
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German (de)
English (en)
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EP3380314A1 (fr
Inventor
Gerhard Voegel
Markus Bieg
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.)
L Schuler GmbH
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L Schuler GmbH
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Publication of EP3380314A1 publication Critical patent/EP3380314A1/fr
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Publication of EP3380314B1 publication Critical patent/EP3380314B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/266—Drive systems for the cam, eccentric or crank axis
    • 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
    • B21J9/10—Drives for forging presses
    • B21J9/18—Drives for forging presses operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars
    • 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
    • B21J9/10—Drives for forging presses
    • B21J9/20—Control devices specially adapted to forging presses not restricted to one of the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/14—Control arrangements for mechanically-driven presses
    • B30B15/148—Electrical control arrangements

Definitions

  • the invention relates to a method for operating a press according to claim 1 or 2.
  • a servo press is known in which the ram kinematics are influenced to select or determine a movement sequence, with the downward speed of the ram or the upward speed of the ram being changed, for example, in order to facilitate part transport.
  • the method according to the invention for operating a crank press, with at least 80% of its nominal pressing force for forming, in particular for forging workpieces such as in particular a forging crank press provides for the press with a servo drive and between the servo drive and a workpiece, which is arranged during operation of the press equip moving mass system, wherein a mass of the mass system is formed at least by a ram and at least by a drive shaft, wherein the mass system at least temporarily from the servo drive is driven, with the servo drive providing a maximum of 80% of the nominal pressing force for a forming process and the mass of the mass system being accelerated by the servo drive before the forming process in such a way that at least 100% of the nominal pressing force is available during the forming process.
  • the method according to the invention for operating a crank press for forming, in particular for forging workpieces such as in particular a forging crank press, provides for the press to be equipped with a servo drive and a mass system which is arranged between the servo drive and a workpiece and moves during operation of the press, with a mass of the mass system is formed by at least one ram and at least one drive shaft, the mass system being driven at least temporarily by the servo drive, the increased nominal pressing force being provided proportionately by the servo drive and the mass system, and the difference between 80% nominal pressing force and at least 100% Rated pressing force is compensated by increasing the speed of the mass of the mass system and / or by increasing the mass of the mass system.
  • the method provides for the mass system to be used the forming process delivered energy to a subsequent forming process by the servo drive again. This enables continuous, uninterrupted operation of the press.
  • crankshaft is driven by the servo drive, with the ram being driven by the crankshaft and with the servo drive applying to the crankshaft outside and during the forming process at most a torque which is at least 20% less than the torque at 100% nominal pressing force.
  • the servo drive and its converter can be dimensioned significantly smaller than servo drives and converters of presses with comparable nominal pressing forces.
  • an inherent centrifugal mass of the press is formed by the ram and in particular by the ram and the drive shaft and preferably also by an additional mass. As a result, sufficient mass is available for storing energy, which can also be increased by retrofitting existing presses when using an additional mass.
  • the workpiece is formed proportionately by the drive power of the servo drive and proportionately with the release of kinetic energy from the mass system. This makes it possible to dimension the servo drive small in relation to the nominal power of the press.
  • the servo drive provides a maximum of 80% of the nominal pressing force of the press for a forming process and that the mass system, as a result of acceleration by the servo drive, provides at least 20% of the nominal pressing force of the press for the forming process.
  • the servo drive and an electrical converter connected upstream of it are cost-effective components when measured against the nominal pressing force of the press.
  • a diagram D1 is shown in which a speed DZ of a servo drive specified in revolutions per minute is plotted against a position ST of a ram for a press, the press starting from a position I in which the ram is at top dead center OT1. From a standstill, the speed DZ of the servo drive is continuously increased to 75 rpm, whereby the kinetic energy contained in a mass system downstream of the servo drive builds up and increases. From a position II of the tappet, which is about 50 mm before its reversal point or bottom dead center UT1, the speed of 75 rpm is maintained.
  • a in the figure 2 second diagram D2 shown how the ram passes the top dead center OT2 at the beginning of a second cycle at a speed of the servo drive of 10 rpm and thus already full of energy.
  • the servo drive then revs up to a speed of 75 rpm, further increasing the kinetic energy of the mass system.
  • the subsequent further procedure is the same as that for the figure 1 further procedure described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Forging (AREA)
  • Control Of Presses (AREA)

Claims (9)

  1. Procédé d'exploitation d'une presse à manivelle avec au moins 80 % de sa force de compression nominale pour le formage, notamment pour le forgeage de pièces, comme notamment une presse à manivelle de forgeage,
    - la presse comprenant un servo-entraînement et un système de masse agencé entre le servo-entraînement et une pièce, se déplaçant lors de l'exploitation de la presse,
    - une masse du système de masse étant formée au moins par un coulisseau et au moins par un arbre d'entraînement,
    - le système de masse étant entraîné au moins temporairement par le servo-entraînement,
    - au maximum 80 % de la force de compression nominale étant fournie par le servo-entraînement pour une opération de formage,
    caractérisé en ce que
    - la masse du système de masse est accélérée par le servo-entraînement avant l'opération de formage de telle sorte que, lors de l'opération de formage, au moins 100 % de la force de compression nominale est fournie.
  2. Procédé pour augmenter la force de pression nominale d'une presse à manivelle pour le formage, notamment pour le forgeage de pièces, comme notamment une presse à manivelle de forgeage,
    - la presse comprenant un servo-entraînement et un système de masse agencé entre le servo-entraînement et une pièce, se déplaçant lors de l'exploitation de la presse,
    - une masse du système de masse étant formée au moins par un coulisseau et au moins par un arbre d'entraînement,
    - le système de masse étant entraîné au moins temporairement par le servo-entraînement,
    - la force de compression nominale augmentée étant fournie proportionnellement par le servo-entraînement et le système de masse,
    caractérisé en ce que
    - la différence entre 80 % de la force de compression nominale et au moins 100 % de la force de compression nominale est compensée par une augmentation de la vitesse de rotation de la masse du système de masse et/ou par une augmentation de la masse du système de masse.
  3. Procédé selon la revendication 1 ou la revendication 2, caractérisé en ce que son énergie dégagée lors de l'opération de formage est restituée au système de masse par le servo-entraînement jusqu'à une opération de formage ultérieure.
  4. Procédé selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que
    - la presse est exploitée comme une presse à rotation continue,
    - une énergie contenue dans le système de masse à la fin d'un cycle étant transférée dans un cycle suivant par une marche continue de la presse.
  5. Procédé selon la revendication 1 ou 2, caractérisé en ce que
    - le vilebrequin est entraîné par le servo-entraînement,
    - le coulisseau est entraîné par le vilebrequin et
    - le servo-entraînement applique au vilebrequin, en dehors et pendant l'opération de formage, au plus un couple qui est au maximum de 80 % d'un couple requis.
  6. Procédé selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'une masse d'inertie propre de la presse est formée par le coulisseau, et notamment par le coulisseau et l'arbre d'entraînement, et de préférence par une masse supplémentaire.
  7. Procédé selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que l'énergie cinétique contenue dans le système de masse est utilisée et l'ensemble de l'énergie de formage respectivement nécessaire n'est pas tirée d'un réseau électrique.
  8. Procédé selon la revendication 1, caractérisé en ce que, lors d'une opération de formage nécessitant au moins 80 % de la puissance nominale de la presse, la pièce est formée proportionnellement par une puissance d'entraînement du servo-entraînement et proportionnellement en dégageant de l'énergie cinétique du système de masse.
  9. Procédé selon la revendication 1 et/ou 2, caractérisé en ce que de l'énergie cinétique est dégagée par le système de masse lors du formage, au moins à hauteur de 20 % de la puissance nominale de la presse.
EP16801194.8A 2015-11-26 2016-11-24 Procédé de fonctionnement d'une presse, en particulier d'une presse d'estampage à vilebrequin Active EP3380314B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015120546.7A DE102015120546A1 (de) 2015-11-26 2015-11-26 Verfahren zum Betrieb einer Presse, insbesondere einer Schmiedekurbelpresse
PCT/EP2016/078613 WO2017089433A1 (fr) 2015-11-26 2016-11-24 Procédé de fonctionnement d'une presse, en particulier d'une presse à vilebrequin d'estampage

Publications (2)

Publication Number Publication Date
EP3380314A1 EP3380314A1 (fr) 2018-10-03
EP3380314B1 true EP3380314B1 (fr) 2023-05-24

Family

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Application Number Title Priority Date Filing Date
EP16801194.8A Active EP3380314B1 (fr) 2015-11-26 2016-11-24 Procédé de fonctionnement d'une presse, en particulier d'une presse d'estampage à vilebrequin

Country Status (6)

Country Link
EP (1) EP3380314B1 (fr)
JP (1) JP7112956B2 (fr)
CN (1) CN108391425B (fr)
DE (1) DE102015120546A1 (fr)
ES (1) ES2950422T3 (fr)
WO (1) WO2017089433A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110142997B (zh) * 2019-05-14 2024-01-23 南京农业大学 一种多连杆伺服压力机运动控制方法及系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013105468A1 (de) * 2013-05-28 2014-12-04 Schuler Pressen Gmbh Verfahren zur Steuerung einer Presse mit variabler Getriebeübersetzung

Family Cites Families (14)

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JPH10263900A (ja) * 1997-03-27 1998-10-06 Nisshinbo Ind Inc パンチプレスの駆動モータのオーバヒート防止方法
JP2001062591A (ja) * 1999-08-24 2001-03-13 Amada Co Ltd プレス機械
JP2003011000A (ja) * 2001-06-27 2003-01-15 Yuichi Kiryu 冷間鍛造用等の油圧プレスの油圧回路
DE102004009256B4 (de) * 2004-02-26 2008-04-03 Schuler Pressen Gmbh & Co. Kg Mechanische Mehrservopresse
EP2186631A1 (fr) * 2008-11-12 2010-05-19 FMI systems GmbH Bancs de formage dotés d'un mode de fonctionnement efficace
BRPI0823357A2 (pt) * 2008-12-05 2015-06-16 Abb Res Ltda Método em um sistema de produção para limitar energia de pico
DE102009049146B3 (de) 2009-10-12 2011-05-05 Müller Weingarten AG Verfahren zur Generierung einer Stößelkinematik für Servopressen
CN102019707A (zh) * 2010-12-03 2011-04-20 广东锻压机床厂有限公司 伺服压力机高增力比三角连杆-肘杆传动机构
DE102011016669B4 (de) * 2011-04-12 2016-03-24 Schuler Pressen Gmbh Verfahren zum Betreiben einer Presse mit Unterantrieb und danach betriebene Presse
JP5855868B2 (ja) * 2011-07-29 2016-02-09 株式会社栗本鐵工所 鍛造プレス機
JP5555679B2 (ja) * 2011-09-26 2014-07-23 アイダエンジニアリング株式会社 サーボプレスおよびサーボプレスの制御方法
JP5770586B2 (ja) 2011-09-28 2015-08-26 住友重機械工業株式会社 鍛造プレス装置およびその制御方法
JP2013136060A (ja) 2011-12-28 2013-07-11 Aida Engineering Ltd プレス機械およびプレス機械の制御方法
CN203267237U (zh) * 2013-05-02 2013-11-06 江苏扬力集团有限公司 一种压力机的飞轮储能装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013105468A1 (de) * 2013-05-28 2014-12-04 Schuler Pressen Gmbh Verfahren zur Steuerung einer Presse mit variabler Getriebeübersetzung

Also Published As

Publication number Publication date
DE102015120546A1 (de) 2017-06-01
EP3380314A1 (fr) 2018-10-03
ES2950422T3 (es) 2023-10-09
CN108391425A (zh) 2018-08-10
JP2018535098A (ja) 2018-11-29
WO2017089433A1 (fr) 2017-06-01
CN108391425B (zh) 2020-09-04
JP7112956B2 (ja) 2022-08-04

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