EP2228203B1 - Presse à déformer mécanique - Google Patents

Presse à déformer mécanique Download PDF

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Publication number
EP2228203B1
EP2228203B1 EP10001331.7A EP10001331A EP2228203B1 EP 2228203 B1 EP2228203 B1 EP 2228203B1 EP 10001331 A EP10001331 A EP 10001331A EP 2228203 B1 EP2228203 B1 EP 2228203B1
Authority
EP
European Patent Office
Prior art keywords
press
gear
drive
eccentric
ram
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
EP10001331.7A
Other languages
German (de)
English (en)
Other versions
EP2228203A3 (fr
EP2228203A2 (fr
Inventor
Stefan Dipl.-Wi.-Ing. Kaiser (FH)
Ingolf Dr. Pappe
Andreas Dipl.-Ing. Walther
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.)
Andritz Technology and Asset Management GmbH
Original Assignee
Andritz Technology and Asset Management GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Andritz Technology and Asset Management GmbH filed Critical Andritz Technology and Asset Management GmbH
Priority to PL10001331T priority Critical patent/PL2228203T3/pl
Priority to SI201031074T priority patent/SI2228203T1/sl
Publication of EP2228203A2 publication Critical patent/EP2228203A2/fr
Publication of EP2228203A3 publication Critical patent/EP2228203A3/fr
Application granted granted Critical
Publication of EP2228203B1 publication Critical patent/EP2228203B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the invention relates to a mechanical forming press with a press gear, via which a press ram is mechanically coupled to a drive, wherein the drive comprises at least one electric servomotor.
  • Such a forming press is for example from the document DE 10 2004 009 256 B4 known.
  • WO-A-2006104000 discloses a mechanical forming press having the features of the preamble of claim 1.
  • Such a forming press has a complex structure with many components.
  • the invention has for its object to provide a mechanical forming press of the type mentioned above, which has a particularly simple structure with the lowest possible number of components.
  • the invention provides the mechanical forming press according to claim 1, which is equipped with a press gear, via which a press ram is mechanically coupled to a drive, wherein the drive comprises at least one electric servomotor and the press gear between a drive shaft of the servomotor and an output shaft for the press ram has a continuously varying transmission ratio.
  • the output shaft driving the press ram can be made to have a varying angular velocity when a drive shaft of the servomotor rotates at a substantially constant angular velocity.
  • the powerful electric servomotor is characterized by high torque and can be used as the main drive.
  • the rotational movement of the servo motor is transformed by means of the press gear in a translational movement of the press ram.
  • the servomotor can be operated particularly efficiently in continuous operation at a substantially constant angular velocity, wherein power losses, the z. B. result by repeated acceleration and deceleration of the engine and the entire press gear, can be avoided. Due to the infinitely variable transmission ratio of the press gear can be achieved that the press ram is slowed down just in the forming area of the mechanical forming press, so that lower impact speeds, lower noise emissions and longer tool life can be achieved.
  • the mechanical forming press of the type mentioned has a particularly simple structure with an extremely small number of components, so that the object underlying the invention is achieved.
  • the press gear has a multi-crank gear. Due to the multi-crank gear, a continuously variable transmission ratio of the press gear can be accomplished in a simple manner.
  • the press gear on a drag crank gear According to the invention, the press gear on a drag crank gear.
  • the continuously varying transmission ratio of the press gear can be accomplished in a very small space.
  • the drag crank gear comprises the output shaft for the press ram and a counter gear wherein the output shaft is arranged eccentrically to the counter gear and coupled via a drag crank with the counter gear.
  • the output shaft is designed as an eccentric shaft.
  • the eccentric shaft accomplishes the basic translation of the press gear.
  • the basic ratio of the press gear can be multiplied in a simple manner with the continuously varying transmission ratio of the towing gear, wherein the overall gear ratio of the press gear is adjustable depending on the desired course on the ram stroke.
  • the transmission ratio of the press gear is increased in the region of the forming of the forming press.
  • the press ram is slowed down in the forming area, whereby a slowed down pulling speed and an increased working travel can be achieved before the bottom dead center.
  • the press ram is coupled clutch-free with the drive.
  • a continuous drive of the press ram can be realized across the entire ram stroke.
  • the number of components can be further reduced if a clutch is dispensed with.
  • a connecting rod driving the press ram is arranged with the interposition of an eccentric disc adjustably on the eccentric of the eccentric shaft.
  • the counter gear is located centrally between the two eccentrics.
  • the drive follows on one side laterally next to the eccentrics.
  • the torque to be transmitted causes a torsion of the eccentric shaft.
  • This torsion has different degrees of rotation of the eccentric result.
  • the differently sized twist angle cause an inclination of the press ram.
  • a drive between the two eccentrics avoids this effect.
  • the countershaft transmission can be arranged centrally between the eccentrics. Then arise at both eccentrics angle of rotation of the same size and direction. A tilting of the press ram can be effectively avoided.
  • At least one transmission stage is arranged between the drive and the counter gear.
  • the torque acting on the counter gear can be precisely matched to the respective requirements, so that optimum operating results can be achieved.
  • the drive shaft of the servomotor rotates at a higher speed than the counter gear and / or the output shaft for the press ram. With a correspondingly powerful drive, it is also possible to couple the drive directly to the counter gear.
  • the translation stage is engaged with the drive and / or with the counter gear. As a result, a slip-free translation can be accomplished.
  • the translation stage is formed by preferably a single-stage spur gear. Such a transmission is particularly easy to produce.
  • a preferred aspect of the invention relates to a method of actuating a mechanical forming press according to any one of the preceding embodiments, wherein the electric servomotor is operated at substantially the same speed over the entire ram stroke. As a result, energy-intensive speed changes are avoided and the servo motor can be operated very efficiently in continuous operation.
  • FIG. 1 shows a perspective view of the press drive according to the invention.
  • the invention relates to a mechanical forming press with a continuous or clutch-free press gear, via which a press ram is mechanically coupled to a drive.
  • the drive comprises at least one electric servomotor with a drive shaft, wherein the press gear between a drive shaft of the servomotor and an output shaft for the press ram has a continuously variable transmission ratio, so that the output shaft has a varying angular velocity when the drive shaft of the servomotor with a substantially constant angular velocity turns.
  • the forming press has a housing which has a gear housing and a press head.
  • the press housing which provides the bearings for the gear parts, and the press ram are not shown for clarity.
  • FIG. 1 shows a perspective view of the press gear 1 of the invention for a mechanical forming press.
  • the press drive in the present case comprises two electric servomotors 2 each having a drive shaft 20 and a drive pinion 21.
  • the drive pinions 21 of the electric servomotors 2 are coupled to the press gear 1.
  • the press transmission 1 comprises a countershaft, a drag crank gear 3 and a slider crank gear.
  • the countershaft comprises a gear stage 4 designed as a spur gear with a large sprocket 41 and a small sprocket 42.
  • the large sprocket 41 is engaged with the drive sprockets 21 of the electric servomotors 2 and the small sprocket 42 is connected to the counter gear 31 of the towing crank gear 3 engaged.
  • the towing gear 3 includes an output shaft 30 for the ram (s) 31 and the counter gear 31.
  • the output shaft 30 is eccentric to the counter gear 31 and continuously coupled to the counter gear 31 via a drag crank (not shown) such that the output shaft 30 has a varying angular velocity when the counter gear 31 rotates at a substantially constant angular velocity.
  • the output shaft 30, which is designed as an eccentric shaft, forms a slider-crank mechanism and comprises two eccentrics 32, on which connecting rods 34 are rotatably mounted with the interposition of eccentric discs 33.
  • the connecting rods 34 are connected in a known manner with a press die, not shown, which is guided vertically slidably movable in Pressenkopf Faculty of the housing.
  • the eccentric discs 33 are preferably adjustable relative to the eccentric shaft 30.
  • the counter gear 31 is arranged centrally between the two eccentrics 32.
  • the drive shafts 20 of the servomotors 2, the gear ratio 4, the counter gear 31 and the eccentric shaft 30 are preferably arranged substantially parallel to each other, wherein the transmission stage 4, the counter gear 31 and the eccentric shaft 30 are fixedly mounted and rotatably supported in respective bearings in the housing of the forming press are.
  • the drive takes place via the electric servomotors 2, which rotate in the same direction of rotation at a substantially constant angular velocity.
  • the power of the electric servomotors 2 is over the translation stage 4 is applied to the counter gear 31, which is coupled via a towing crank with infinitely variable transmission ratio with the eccentric shaft 30.
  • the drag crank causes the eccentric shaft 30 to have a varying angular velocity as the counter gear 31 rotates at a substantially constant angular velocity, thereby increasing the gear ratio in the area of forming the forming press 1.
  • the power of the electric servomotors 2 is applied to the eccentric 32, which then transmit the power respectively to the associated connecting rods 34.
  • the invention is based on the idea that high-performance servomotors 2 are used as the main drive, so that by controlling the servomotor a flexibilization of the ram stroke is possible.
  • the rotational movement of the servo motors 2 is transformed by means of the continuous press gear 1 with continuously variable transmission ratio in a translational movement of the press ram.
  • the gear ratio is increased in the forming press according to the invention in the field of forming.
  • the ratio of the thrust crank gear (eccentric shaft) as a basic translation of the press drive is multiplied by the varying over the crank angle gear ratio of the towing crank mechanism.
  • the flexibility of the stroke of the press ram is achieved by the direct control of the servomotors, which act as main motors.
  • the gear ratio is increased by the drag crank gear. This ensures that the Nennpresskraftweg the press at given torques of the servomotors increased.
  • the nominal force of travel of a 6300 kN press in conventional eccentric drive is 7.6 mm and in the case of a servo press with integrated drag crank mechanism 10.5 mm before bottom dead center.
  • a higher nominal working capacity is provided when using the same servomotors.

Landscapes

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

Claims (8)

  1. Presse de formage mécanique comprenant un ensemble de transmission de presse (1) par l'intermédiaire duquel un coulisseau de presse est couplé mécaniquement à un moyen d'entraînement (2), presse
    dans laquelle le moyen d'entraînement (2) comprend au moins un servomoteur électrique,
    dans laquelle l'ensemble de transmission de presse (1) entre un arbre d'entraînement moteur (20) du servomoteur et un arbre d'entraînement mené (30) pour le coulisseau de presse, présente un rapport de démultiplication variant en continu,
    dans laquelle l'ensemble de transmission de presse (1) présente une transmission à manivelle motrice (3), qui comprend l'arbre d'entraînement mené (30) réalisé en tant qu'arbre excentrique (30) pour le coulisseau de presse, ainsi qu'une roue d'engrenage intermédiaire (31),
    dans laquelle l'arbre d'entraînement mené (30) est agencé de manière excentrée par rapport à la roue d'engrenage intermédiaire (31) et est couplé par l'intermédiaire d'une manivelle motrice à la roue d'engrenage intermédiaire (31),
    et dans laquelle au moins un étage de démultiplication (4) est agencé entre le moyen d'entraînement (2) et la roue d'engrenage intermédiaire (31),
    caractérisée en ce que
    l'arbre excentrique (30) comprend deux excentriques (32) et la roue d'engrenage intermédiaire (31) est agencée entre les deux excentriques (32),
    une bielle (34), qui entraîne le coulisseau de presse, est agencée de manière réglable sur l'excentrique (32) de l'arbre excentrique (30) avec interposition d'un disque excentrique (33), et
    l'étage de démultiplication (4) se trouve en prise avec le moyen d'entraînement (2) et avec la roue d'engrenage intermédiaire (31).
  2. Presse de formage mécanique selon la revendication 1, caractérisée en ce que l'ensemble de transmission de presse (1) comprend une transmission à manivelles multiples (3).
  3. Presse de formage mécanique selon l'une des revendications précédentes, caractérisée en ce que le rapport de démultiplication de l'ensemble de transmission de presse (1) est augmenté dans la plage de formage de la presse de formage (1).
  4. Presse de formage mécanique selon l'une des revendications précédentes, caractérisée en ce que le coulisseau de presse est couplé au moyen d'entraînement (2) sans embrayage.
  5. Presse de formage mécanique selon l'une des revendications précédentes, caractérisée en ce que la roue d'engrenage intermédiaire (31) est agencée de manière centrale entre les deux excentriques (32).
  6. Presse de formage mécanique selon l'une des revendications précédentes, caractérisée en ce que l'étage de démultiplication (4) est formé par un train d'engrenage cylindrique de préférence à un étage.
  7. Presse de formage mécanique selon l'une des revendications précédentes, caractérisée en ce que le servomoteur électrique (2) est actionné dans le même sens de rotation sur la totalité de la course du coulisseau.
  8. Procédé d'actionnement d'une presse de formage mécanique selon l'une des revendications précédentes, caractérisé en ce que l'on actionne le servomoteur électrique (2) avec une vitesse de rotation sensiblement identique sur la totalité de la course du coulisseau.
EP10001331.7A 2009-03-06 2010-02-09 Presse à déformer mécanique Active EP2228203B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL10001331T PL2228203T3 (pl) 2009-03-06 2010-02-09 Mechaniczna prasa formująca
SI201031074T SI2228203T1 (sl) 2009-03-06 2010-02-09 Mehanska stiskalnica za preoblikovanje

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009012111.0A DE102009012111B4 (de) 2009-03-06 2009-03-06 Mechanische Umformpresse und Verfahren zur Betätigung dieser Umformpresse

Publications (3)

Publication Number Publication Date
EP2228203A2 EP2228203A2 (fr) 2010-09-15
EP2228203A3 EP2228203A3 (fr) 2013-05-15
EP2228203B1 true EP2228203B1 (fr) 2015-09-09

Family

ID=42237236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10001331.7A Active EP2228203B1 (fr) 2009-03-06 2010-02-09 Presse à déformer mécanique

Country Status (11)

Country Link
EP (1) EP2228203B1 (fr)
CN (1) CN101823345B (fr)
DE (1) DE102009012111B4 (fr)
DK (1) DK2228203T3 (fr)
EA (1) EA016473B1 (fr)
ES (1) ES2553853T3 (fr)
HU (1) HUE025845T2 (fr)
PL (1) PL2228203T3 (fr)
PT (1) PT2228203E (fr)
SI (1) SI2228203T1 (fr)
UA (1) UA98663C2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT511135B1 (de) * 2011-03-11 2015-09-15 Andritz Tech & Asset Man Gmbh Antriebseinheit für einen stanzautomat oder eine presse
EP2529922B1 (fr) * 2011-05-31 2019-03-27 Haulick + Roos GmbH Dispositif d'actionnement pour un automate de presse, de découpe ou de déformage
ITVE20120010U1 (it) * 2012-04-02 2013-10-03 Dallan Spa Dispositivo di azionamento di punzoni per testate di punzonatura.-
CN104553013A (zh) * 2014-12-29 2015-04-29 一重集团大连设计研究院有限公司 用于高速伺服压力机的主传动结构
CN105351484A (zh) * 2015-12-22 2016-02-24 扬州捷迈锻压机械有限公司 一种偏心齿轮
CN111645352A (zh) * 2020-06-29 2020-09-11 齐齐哈尔二机床(集团)有限责任公司 一种大型多工位机械压力机主传动结构
CN112496090B (zh) * 2020-11-26 2023-08-01 安徽金阳金属结构工程有限公司 一种h型钢生产用纠偏装置及其工作方法
CN113070435A (zh) * 2021-03-19 2021-07-06 沃得精机(中国)有限公司 一种伺服电机传动结构
CN113400701B (zh) * 2021-08-17 2021-10-29 江苏专创轻合金科技有限公司 一种可调节功率的自动压力机及其使用方法

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DE3421184C2 (de) * 1984-06-07 1986-11-20 Unidor GmbH, 7534 Birkenfeld Verfahren zur Hubverstellung an Exzenterpressen
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EP0250871B1 (fr) * 1986-06-30 1990-08-08 Aida Engineering Ltd. Dispositif pour le réglage de la course dans les presses
SU1505796A1 (ru) * 1988-01-04 1989-09-07 Предприятие П/Я Г-4585 Устройство дл регулировани величины хода ползуна кривошипного пресса
JPH0832375B2 (ja) * 1990-01-17 1996-03-29 アイダエンジニアリング株式会社 プレスのクランク駆動機構
CA2091747C (fr) * 1992-03-16 1999-05-11 Keiichiro Hayashi Arbre d'entrainement pour presse mecanique
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WO2008149171A1 (fr) * 2007-06-06 2008-12-11 Abb Research Ltd Kit d'amélioration de moteur pour une presse mécanique

Also Published As

Publication number Publication date
EA016473B1 (ru) 2012-05-30
CN101823345B (zh) 2013-07-24
HUE025845T2 (en) 2016-04-28
SI2228203T1 (sl) 2016-01-29
EP2228203A3 (fr) 2013-05-15
CN101823345A (zh) 2010-09-08
DE102009012111A1 (de) 2010-09-16
DE102009012111B4 (de) 2014-10-02
DK2228203T3 (en) 2015-12-14
EA201000305A1 (ru) 2010-10-29
ES2553853T3 (es) 2015-12-14
UA98663C2 (ru) 2012-06-11
PL2228203T3 (pl) 2016-03-31
PT2228203E (pt) 2015-12-31
EP2228203A2 (fr) 2010-09-15

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