EP2490886B1 - Procédé de fonctionnement et dispositif destiné à faire fonctionner des presses - Google Patents

Procédé de fonctionnement et dispositif destiné à faire fonctionner des presses Download PDF

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Publication number
EP2490886B1
EP2490886B1 EP10787675.7A EP10787675A EP2490886B1 EP 2490886 B1 EP2490886 B1 EP 2490886B1 EP 10787675 A EP10787675 A EP 10787675A EP 2490886 B1 EP2490886 B1 EP 2490886B1
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EP
European Patent Office
Prior art keywords
stroke
press
controlled
ram
sin
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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.)
Not-in-force
Application number
EP10787675.7A
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German (de)
English (en)
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EP2490886A2 (fr
Inventor
Thomas Spiesshofer
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 date
Application filed by L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP2490886A2 publication Critical patent/EP2490886A2/fr
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Publication of EP2490886B1 publication Critical patent/EP2490886B1/fr
Not-in-force legal-status Critical Current
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    • 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 presses with plunger and tool, such as forming presses or cutting presses, e.g. Large step-presses, transfer presses, multi-ram transfer presses, such forming presses or cutting presses also classified in press lines.
  • forming presses or cutting presses e.g. Large step-presses, transfer presses, multi-ram transfer presses, such forming presses or cutting presses also classified in press lines.
  • Such types of forming presses, press lines or cutting presses essentially have the steps of feeding, possibly centering, shaping or cutting and depositing the parts with integrated transfer steps for the parts.
  • means for a transfer system for transporting the parts to be formed or formed or to be cut or cut, if appropriate also via a centering system, are provided for this purpose.
  • the interaction of these steps and systems is matched to the clocked mold strokes or cutting strokes of the respective forming press or cutting press.
  • Both the clocked operation to be observed and in particular the superimposition of movement processes for the pressing and the transfer of the parts to be machined require distances which lead to a so-called free movement of the press. This required clearance is an essential criterion for the kinematic and structural design or design of presses of the type mentioned.
  • EP 1 880 837 A2 discloses a press system with energy management, which on the one hand has sufficient capacity to absorb additional energy and on the other hand at any time sufficient energy to meet the respective press cycle.
  • a servo motor drive is used here, the overall concept of this press is not designed to that effect.
  • JP 2000 176698 A merely a method for stamping or shaping of obviously difficult forming components or materials shown.
  • JP 2000 176698 A merely a method for stamping or shaping of obviously difficult forming components or materials shown.
  • a working method according to claim 1 for operating forming presses or cutting presses such as large step-presses, transfer presses, Mehrst Jardineltransferpressen, such forming presses or cutting presses also classified in press lines, comprising the steps feeding, possibly centering, shaping or cutting and storage of the parts with integrated Transfer steps for the parts, for which means are provided for a transfer system for transporting the parts to be formed or formed or cut or cut, possibly also via a centering system, which correspond to the clocked mold strokes or cutting strokes of the respective forming press or cutting press, carried out ,
  • a predetermined variable thus merges into a value according to which the stroke of the plunger stroke also controls or regulates in partial areas, clocked at a Pressenhubressress to specify a relatively small ram stroke such that an optimized, sufficient clearance in place of the previously large, but oversized clearance of the press is achieved.
  • stroke a 0 / 2 + a 1 * cos 1 * x + a 2 * cos 2 * x + ... + b 1 * sin 1 * x + b 2 * sin 2 * x +
  • x is 0 to 2 * pi.
  • the accuracy can be determined and set with a number of coefficients that are still functionally defined below.
  • the course of the beginning and end of the ram stroke is monitored, controlled and, if necessary, regulated in such a way as to reproducibly adhere to a position of the ram which is tracked in terms of time or angle of rotation.
  • the course of the ram stroke is also monitored, and values such as the first "position” as the position of the driving force from the ram and values as a second "position” as the position of separation of the driving force from the ram are measured.
  • both the course of the beginning of the stroke within a first path and the course of the outlet of the hub are monitored within a second path, measured you then controlled or regulated.
  • any cyclical movement of the plunger according to the formula stroke a 0 / 2 + a 1 * cos 1 * x + a 2 * cos 2 * x + b 1 * sin 1 * x + ... + b 2 * sin 2 * x + ... + and thereafter formed or controlled coefficients.
  • the press is operated according to a program which comprises the aforesaid steps for the automatic control or regulation of the press, wherein the program for these steps has adjustable or achievable data, such as speed and acceleration of the plunger and a minimum free movement of the press.
  • the comparison clarifies according to Fig. 3 in that the potential of a higher stroke frequency, ie a higher efficiency, such as the number of pieces in the time unit, can be developed during the molding or cutting of workpieces. This can be exploited, in particular, if the geometry of the parts allows a short residence time in the clearance of the plunger stroke. In the best case, then even the shorter ram stroke virtually pass through without stoppage of the plunger during part transfer.
  • the presses designed hereafter thus represent a procedurally new generation of production-optimized presses.
  • FIGS. 1 to 3 and 7 From the FIGS. 1 to 3 and 7 can the respective height of a stroke H in the FIGS. 4 to 6 2 are shown schematically taken plunger.
  • the inventive method for operating a schematically in the FIGS. 4 to 6 reproduced press 1 with the said plunger 2 and a tool 2.1 is applicable for forming presses or cutting presses.
  • the method can thus in forming presses, such as large-scale transfer presses, transfer presses, Mehrst Jardineltransferpressen or cutting presses in press lines not shown for forming or cutting parts 2.2 with essentially the steps, feeding, possibly centering, shaping or cutting and storage of parts 2.2 with Integrated transfer steps for parts 2.2 are easily integrated.
  • values for the stroke H of the tappet 2 can be clocked at a rate, for example, increased by 1.5 press stroke.
  • Fig. 7 At least one value such as a first "position” A is monitored in the course of the stroke H over a time t at which first "position” A a full drive force transmission to the plunger 2 is measured.
  • this monitoring and control can also be performed by tracking the position of the angle of rotation on a responsible rotating machine element.
  • the outlet of the stroke H is monitored and a second "position" B of a separation of the driving force from the plunger 2 is measured, as shown Fig. 7 can be removed.
  • the outlet of the stroke H is not only monitored, but advantageously controlled in the range of a second path l 2 in order to maintain even this "position" B of the plunger 2 exactly reproducible, analogous to the first "Position" time A or rotational angle dependent ,
  • the accuracy of the present invention running cyclic movements of the plunger 2 can therefore be determined and set with a number of coefficients, which are thus functionally defined.
  • the method is rationally practicable through the use of a program comprising the aforementioned steps and values for automatic control of the press 1.
  • the program may further comprise settable or attainable data for these steps, such as speed and acceleration of the plunger 2 and a minimum clearance of the press 1, measured at the height of the stroke H to be given.
  • said steps may relate to a transfer movement both preceding and subsequent.
  • FIG. 5 and 6 Fig. Due to their simplicity schematically but sufficiently illustrated.
  • Fig. 4 For the sake of completeness, means for a transfer system 2.3 for transporting the parts to be formed or formed or to be cut or cut 2.2, if necessary also via a centering system not shown in more detail, are indicated.
  • the device has, for example, according to Fig. 5 for the controlled inlet of the plunger 2 in the first essential position A and the controlled outlet in the second essential to the invention B a servo motor 5 on.
  • This servomotor 5 can be arranged in the region of a main drive 4 of the press 1, the main drive 4 can be switched on or designed as a main drive 4.
  • Fig. 6 For example, it is shown that the respective regulated inlet to the position A and outlet from the position B, a clutch / brake combination 6 before or after the main drive 4 or integrated in this.
  • the developed by the invention economic and feasible technically functional advantages secure a low-cost technologically improved production of the generic presses at the producers with an increased utility value of the same for the operator.
  • the invention has an advantageous effect on the design of the buildings surrounding the generic systems.

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

Claims (12)

  1. Procédé de fonctionnement pour des presses (1) équipées d'un coulisseau (2) et d'un outil (2.1), telles que des presses de formage ou de découpe, avec des courses (H) coordonnées et cadencées pour le formage ou la découpe de pièces (2.2),
    ▪ où, pour obtenir de plus petites courses (H) en lien avec une liberté de mouvement optimisée et suffisante, on fait fonctionner la presse (1) avec un nombre prédéterminé de courses du coulisseau (2), une position du coulisseau (2) définie dans le temps ou le long de son chemin et en influençant activement une ou plusieurs des valeurs que sont la force d'entraînement du coulisseau (2), la vitesse ou l'accélération du coulisseau (2), la liberté de mouvement minimale de la presse (1) ou un mouvement de transfert d'une presse (1) à une autre presse (1),
    ▪ où les courses du coulisseau (2) sont contrôlées ou réglées selon la fonction f(x)= a(0)/2 + a(1) *cos(1* x) + a(2)* cos(2 * x) + ... + a(n) * cos(n * x) + b(1)* sin(1* x) + b(2) * sin(2 * x) + ... + b(n) * sin(n * x), où f(x) définit la course (H), x représente une valeur entre 0 et 2*Pi et des coefficients sont déterminés selon i a(i) b(i) 0 1354.227058823529000 0.000000000000000E+00 1 6,211087651786986E-014 -6,243906782879537E-014 2 290,202318413831200 -384,289975236601800 3 -2,715830852687821E-013 1,884187204349276E-013 4 49,316050906761640 173,327940214515400 5 -1,805616042677905E-013 -5,744078144460588E-014 6 -15,088290781260220 -5,845234989164741 7 -1,873716376516641E-013 8,198941002907585E-014 8 -1,986870683489189 1,230218243448128 9 -2,750407780154656E-013 8,918586271192693E-014 10 -2,564296084347008E-001 2,767316189620829 11 -2,059102420910321E-013 7,826053253200130E-014 12 1,046079698263193 9,536276480635638E-001 13 3,857297670670378E-014 -1,600336005800794E-015 14 -2,222227580962598E-001 4,154063286283567E-002 15 -3,169264053413094E-013 1,529856614009839E-013
    ▪ où, avec une course (H) du coulisseau (2) cadencée selon la valeur donnée et un nombre de courses augmenté de >1, sont mis en oeuvre
    a) une surveillance, un pilotage ou un réglage de la progression du début de la course (H) au sein d'un premier chemin (11) et une mesure de valeurs d'une première « position » (A) dans le temps de la transmission de force d'entraînement au coulisseau (2) ou bien
    b) une surveillance, un pilotage ou un réglage de la progression de la fin de la course (H) au moins au sein d'un second chemin (12) et une mesure de valeurs au moins d'une seconde « position » (B) de séparation de la force d'entraînement du coulisseau (2).
  2. Procédé selon la revendication 1, caractérisé en ce qu'une valeur du début de la course (H) et la première « position » (A) sont surveillées, une transmission d'une force d'entraînement au coulisseau (3) étant mesurée dans ladite première « position » (A).
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que la progression du début de la course (H) est surveillée, contrôlée ou/et le cas échéant réglée, afin de précisément maintenir la « position » (A) dans le temps du coulisseau (2) de manière reproductible.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'au moins une valeur de la fin de la course (H) est surveillée et la seconde « position » (B) d'une séparation de la force d'entraînement du coulisseau (2) est mesurée.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la fin de la course (H) est surveillée, contrôlée ou/et le cas échéant réglée, afin de précisément maintenir la seconde « position » (B) du coulisseau (2) de manière reproductible.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que la progression de la course (H) est surveillée, contrôlée ou réglée en fonction d'un temps (t).
  7. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que la progression de la course (H) est surveillée, contrôlée ou réglée en fonction d'un angle de rotation.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé par l'utilisation d'un programme qui comporte des étapes précédentes pour le contrôle automatique de la presse (1), à savoir comportant une ou plusieurs des étapes de programme suivantes :
    ▪ formation de valeurs selon la fonction f(x)= a(0)/2+ a(1)* cos(1* x) + a(2) *cos(2*x) + ... + a(n) *cos(n* x) + b(1) * sin(1 * x) + b(2) * sin(2 *x) + ... + b(n) * sin(n *x), où f(x) définit la course (H), x représente une valeur entre 0 et 2*Pi et des coefficients sont déterminés selon i a(i) b(i) 0 1354.227058823529000 0.000000000000000E+00 1 6,211087651786986E-014 -6,243906782879537E-014 2 290,202318413831200 -384,289975236601800 3 -2,715830852687821E-013 1,884187204349276E-013 4 49,316050906761640 173,327940214515400 5 -1,805616042677905E-013 -5,744078144460588E-014 6 -15,088290781260220 -5,845234989164741 7 -1,873716376516641E-013 8,198941002907585E-014 8 -1,986870683489189 1,230218243448128 9 -2,750407780154656E-013 8,918586271192693E-014 10 -2,564296084347008E-001 2,767316189620829 11 -2,059102420910321E-013 7,826053253200130E-014 12 1,046079698263193 9,536276480635638E-001 13 3,857297670670378E-014 -1,600336005800794E-015 14 -2,222227580962598E-001 4,154063286283567E-002 15 -3,169264053413094E-013 1,529856614009839E-013
    ▪ progression du début de la course (H) pour un contrôle ou réglage automatique de la première « position » (A) au moyen des valeurs mesurées de la transmission de force d'entraînement au coulisseau (2),
    ▪ fin de la course (H) pour un contrôle et, le cas échéant, réglage de la seconde « position » (B) de la séparation de la force d'entraînement au moyen des valeurs mesurées du coulisseau (2).
  9. Procédé et programme selon la revendication 8, caractérisés en ce que le programme comporte des données réglables ou à atteindre, comprenant la vitesse et l'accélération du coulisseau (3) et une liberté de mouvement minimale de la presse (1).
  10. Procédé et programme selon l'une des revendications 8 ou 9, caractérisés en ce qu'une étape de travail de chaque mouvement cyclique du coulisseau (2) est contrôlée ou réglée selon la fonction course= a(0)/2 + a(1)* cos(1* x) + a(2)* cos(2* x) + b(1) * sin(1*x) + ... + b(2) * sin(2 * x) + a(2) * cos(2*x) + ... + a(n) * cos(n * x) + b(1) *sin(1* x) + b(2) * sin(2* x) + ...+ b(n) *sin(n* x), où f(x) définit la course (H) et x représente une valeur entre 0 et 2*Pi, et les coefficients sont formés selon i a(i) b(i) 0 1354.227058823529000 0.000000000000000E+00 1 6,211087651786986E-014 -6,243906782879537E-014 2 290,202318413831200 -384,289975236601800 3 -2,715830852687821E-013 1,884187204349276E-013 4 49,316050906761640 173,327940214515400 5 -1,805616042677905E-013 -5,744078144460588E-014 6 -15,088290781260220 -5,845234989164741 7 -1,873716376516641E-013 8,198941002907585E-014 8 -1,986870683489189 1,230218243448128 9 -2,750407780154656E-013 8,918586271192693E-014 10 -2,564296084347008E-001 2,767316189620829 11 -2,059102420910321E-013 7,826053253200130E-014 12 1,046079698263193 9,536276480635638E-001 13 3,857297670670378E-014 -1,600336005800794E-015 14 -2,222227580962598E-001 4,154063286283567E-002 15 -3,169264053413094E-013 1,529856614009839E-013
  11. Procédé et programme selon l'une des revendications 8 à 10, caractérisé en ce qu'un mouvement de transfert d'une presse (1) à une autre presse (1) pour le formage ou la découpe de pièces (2.2) est contrôlée ou réglée en fonction d'une ou plusieurs des étapes
    ▪ début de la course (H) et surveillance d'une première « position » (A),
    ▪ fin de la course (H) et surveillance d'une seconde « position » (B),
    ▪ progression de la course (H) et surveillance d'un premier chemin (11) et
    ▪ progression de la course (H) et surveillance d'un second chemin (12).
  12. Procédé selon l'une des revendications 1 à 11, caractérisé en ce qu'un entraînement principal (4) avec un servomoteur (5) ou une combinaison embrayage/freinage (6) est utilisé pour l'entrée réglée dans la première position (A) et pour la sortie réglée de la seconde position (B), où
    ▪ le servomoteur (5) est connecté à l'entraînement principal (4) de la presse (1) ou conçu comme entraînement principal (4), ou bien
    ▪ la combinaison embrayage/freinage (6) est connectée en amont ou en aval de l'entraînement principal (4), ou bien
    ▪ le servomoteur (5) est utilisé pour l'entrée réglée dans la première position (A) et la combinaison embrayage/freinage (6) est utilisée pour la sortie réglée de la seconde position (B), ou bien
    ▪ la combinaison embrayage/freinage (6) est utilisée pour l'entrée réglée dans la première position (A) et le servomoteur (5) est utilisé pour la sortie réglée de la position (B).
EP10787675.7A 2009-10-22 2010-10-19 Procédé de fonctionnement et dispositif destiné à faire fonctionner des presses Not-in-force EP2490886B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009050390A DE102009050390A1 (de) 2009-10-22 2009-10-22 Arbeitsverfahren und Einrichtung zum Betreiben von Pressen
PCT/DE2010/001208 WO2011047661A2 (fr) 2009-10-22 2010-10-19 Procédé de fonctionnement et dispositif destiné à faire fonctionner des presses

Publications (2)

Publication Number Publication Date
EP2490886A2 EP2490886A2 (fr) 2012-08-29
EP2490886B1 true EP2490886B1 (fr) 2016-03-02

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EP10787675.7A Not-in-force EP2490886B1 (fr) 2009-10-22 2010-10-19 Procédé de fonctionnement et dispositif destiné à faire fonctionner des presses

Country Status (7)

Country Link
US (1) US8631742B2 (fr)
EP (1) EP2490886B1 (fr)
CN (1) CN102725134B (fr)
BR (1) BR112012009330A2 (fr)
DE (1) DE102009050390A1 (fr)
ES (1) ES2567461T3 (fr)
WO (1) WO2011047661A2 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012109150A1 (de) * 2012-09-27 2014-03-27 Schuler Pressen Gmbh Verfahren und Einrichtung zum Betreiben einer Werkzeugmaschine wie Presse mit linear bewegbarem Hubelement
CN105711148B (zh) * 2016-03-18 2017-02-08 济南二机床集团有限公司 伺服和机械压力机混合线节拍优化方法

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Publication number Publication date
WO2011047661A2 (fr) 2011-04-28
DE102009050390A1 (de) 2011-04-28
US8631742B2 (en) 2014-01-21
BR112012009330A2 (pt) 2017-06-06
CN102725134B (zh) 2015-03-11
EP2490886A2 (fr) 2012-08-29
WO2011047661A3 (fr) 2011-09-15
ES2567461T3 (es) 2016-04-22
CN102725134A (zh) 2012-10-10
US20120210887A1 (en) 2012-08-23

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