EP2258498B1 - Presse mécanique destinée à couper fin, déformer et/ou imprégner des pièces usinées - Google Patents

Presse mécanique destinée à couper fin, déformer et/ou imprégner des pièces usinées Download PDF

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Publication number
EP2258498B1
EP2258498B1 EP20090007351 EP09007351A EP2258498B1 EP 2258498 B1 EP2258498 B1 EP 2258498B1 EP 20090007351 EP20090007351 EP 20090007351 EP 09007351 A EP09007351 A EP 09007351A EP 2258498 B1 EP2258498 B1 EP 2258498B1
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EP
European Patent Office
Prior art keywords
mechanical press
press according
phase synchronous
motors
synchronous motors
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
EP20090007351
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German (de)
English (en)
Other versions
EP2258498A1 (fr
Inventor
Markus Dipl.-Ing. Schaltegger
Alfio M-Ing. Cristofaro
Jürg M-Ing. Ochsenbein
Lukas El-Ing. Hüppi
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.)
Feintool Intellectual Property AG
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Feintool Intellectual Property AG
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 Feintool Intellectual Property AG filed Critical Feintool Intellectual Property AG
Priority to EP20090007351 priority Critical patent/EP2258498B1/fr
Priority to CA2705649A priority patent/CA2705649C/fr
Priority to JP2010126757A priority patent/JP5702079B2/ja
Priority to KR1020100052464A priority patent/KR101765904B1/ko
Priority to US12/793,127 priority patent/US8230781B2/en
Priority to CN2010101974031A priority patent/CN101905263A/zh
Publication of EP2258498A1 publication Critical patent/EP2258498A1/fr
Application granted granted Critical
Publication of EP2258498B1 publication Critical patent/EP2258498B1/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
    • B30B1/10—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 toggle mechanism
    • 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
    • B30B1/10—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 toggle mechanism
    • B30B1/14—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 toggle mechanism operated by cams, eccentrics, or cranks
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/26—Programme control arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8845—Toggle links, one link pivoted to tool support

Definitions

  • the invention relates to a mechanical press for fineblanking, forming and / or embossing of workpieces, comprising a machine frame composed of a head piece and an O-frame, a ram guided vertically on a lifting axis in the 0-frame, a toggle lever drive, whose approximately equilateral trained Triangle exhibiting connecting rod has two superimposed hinge points, of which the lower hinge point pivots about a fixed bearing on a disk-like lower articulated arm and the upper hinge point associated with the plunger associated with the lower disc-like articulated arm in the TDC an extended position to the lifting axis, wherein the fixed bearing on the Hubachse of the plunger is located and the connecting rod two aligned with their axes aligned, mounted in fixed bearings eccentric shafts are assigned, the opposite Shaft ends are connected to their simultaneously parallel drive with flywheel three-phase synchronous motors, the motors are adjustable to mutually equal path-time characteristics by means of a computer connected to the engine.
  • a second tab is connected at one end to the plunger and at the other end to the connecting rod.
  • the fixed bearing of this known modified toggle lever is located above the press ram and the pivot point associated with this fixed point pivots about this fixed point.
  • the upper hinge point associated with the press ram describes a curved path.
  • Such a modified toggle drive leads to a slowing of the Plunger movement, so that the material at bottom dead center enough time remains for plastic flow.
  • the disadvantage is that on the one hand the bearing for the connecting rod belonging to the tab and the plunger are on different mutually shifted axes and on the other hand, the fixed bearing for the eccentric shaft is arranged close to the plunger.
  • the plunger is connected via at least two connecting rods with the planetary gear, wherein the planetary gear between the at least two connecting rods is arranged.
  • the upper tool part On the knee lever of the press, the upper tool part is fixed and performs a lifting movement corresponding to the plunger movement.
  • the fixed bearing around which the knuckle lever pivots is arranged at the head of the press, so that here too the disadvantages presented above occur. All these disadvantages also apply to the DE 100 65 260 A1 and DE 199 35 655 A1 to.
  • the present invention seeks to provide a mechanical press for fineblanking, forming and embossing operations, the flywheel works in a wide nominal force range, the rigidity of the toggle lever at top dead center significantly improved, reduces the massiveness of the machine frame and with a significantly reduced drive power despite elimination of the flywheel manages.
  • designed as an O-frame stand of the machine frame has foot side and parallel juxtaposed backpack-like pockets for the formation of the fixed bearing of the eccentric shaft and the horizontal connection of the three-phase synchronous motors.
  • the mutually facing ends of the eccentric shafts are mechanically firmly connected to each other. This can advantageously be done by a coupling piece that connects the two shaft ends with each other rotationally fixed.
  • the three-phase synchronous motors are then aligned flush with their drive shafts horizontal to each other and each have a transmission with one end of each Eccentric shaft mechanically non-positively connected.
  • the three-phase synchronous motors are controlled by the computer as a unit, so that the required electrical values of the motors can be set so that the value-time characteristics of both motors are identical.
  • the mutually facing ends of the eccentric shafts are not connected to each other, so are designed to be open.
  • the three-phase synchronous motors then independently transmit their drive power gearless to the eccentric shafts.
  • Each three-phase synchronous motor is controlled separately by the computer and set to identical path-time characteristics. But it can also be different path-time characteristics are selected to compensate for any tilting of the plunger with eccentric tool load.
  • the head piece torsion on the O-frame is held by screw.
  • the head piece and O-frame made of thin-walled high-strength ductile iron.
  • Fig. 1 a partial representation of a toggle press according to the prior art
  • Fig. 2 a schematic representation of the kinematics according to the prior art
  • FIG. 3a and 3b schematic representations of the kinematics according to the invention at the top and bottom dead center
  • Fig. 4 a perspective view of the machine frame of O-frame without mounted head piece with inserted ram and eccentric shafts
  • Fig. 5 a section along the line AA the Fig. 4 .
  • Fig. 6 a fragmentary perspective view of the machine frame with connected by eccentric shaft and gearbox three-phase synchronous motors
  • Fig. 7 a section along the line BB of Fig. 6 and
  • Fig. 8 a perspective view of the machine frame of O-frame and head piece.
  • the Fig. 1 shows a toggle press 1 of the prior art, which is assumed.
  • a plunger 3 is mounted vertically displaceable.
  • a table 4 (see Fig. 2 ), which is mounted on the machine frame 2.
  • the table 4 serves to receive a lower tool and the plunger 3 is adapted for receiving an upper tool.
  • the plunger 3 is actuated by a plunger drive, to which a modified toggle mechanism 5 belongs, which is driven by an eccentric shaft 6.
  • a gear means such as a gear
  • an electric motor between the electric motor and the gear, an auxiliary gear, for example a planetary gear, can be arranged.
  • the kinematics of the known toggle mechanism 5 goes out of the Fig. 1 and 2 out.
  • a bearing point L1 eccentric shaft 6 On the rotatably mounted on a bearing point L1 eccentric shaft 6 is seated an eccentric 7.
  • a connecting rod 8 is mounted with a corresponding connecting rod bearing 9.
  • the connecting rod 8 has at its end remote from the eccentric 7 a head 10, on which two spaced-apart bearings 11 and 12 are formed.
  • the bearings define with the Center of the connecting rod bearing 9 a triangle. This goes in particular from the Fig. 2 out.
  • the corresponding distances are designated as distances E5, E6 and E8.
  • the eccentricity of the eccentric 7 is the dimension E4.
  • the eccentric shaft 6 is rotatable about a rotation axis D which is stationary in the machine frame 2.
  • L1 denotes the fixed bearing for the eccentric shaft. 6
  • the connecting rod 8 is connected via tabs or articulated arms 13 and 14 with the machine frame 2 and the plunger 3.
  • the tab 13 is pivotally mounted by means of a bearing pin 15 at the connection portion 16 of the connecting rod 8 and at its other end with a bearing pin 17 fixed to the machine frame 2.
  • This bearing pin 17 forms for the tab 13, the fixed bearing L2, which is thus arranged above the plunger 3 and 4 of the table.
  • the tab 13 is with E7 in Fig. 2 designated.
  • the tab 14 is pivotable at its one end about a bearing pin 18 in the terminal portions 19 of the connecting rod 8, while the other end of the tab 14 is pivotable about a bearing pin 20 in the plunger 3.
  • the Fig. 3a to 3b schematically shows the kinematics of the toggle lever in the bottom and top dead center of the plunger in the press according to the invention.
  • the plunger 3 carries a table top 21, to which a lower tool part 42 is attached, so that the table plate 21 with the tool part also performs a lifting movement.
  • the connecting rod 8 forms like the Fig.
  • 3a and 3b schematically show an equilateral effective triangle DE whose base G denotes the head 10 of the connecting rod 8 and two superimposed hinge points 22 and 23 has.
  • a disc-like articulated arm 24 is pivoted at one end thereof, while the other end of the articulated arm 24 is pivotally mounted in the hinge point 25 of the plunger 3.
  • a fixed bearing FL1 In alignment with the vertical stroke axis HU of the plunger 3 is the base side of the machine frame 2, a fixed bearing FL1, in which a disk-like trained lower articulated arm 26 is fixedly mounted with its one end.
  • the articulated arm 26 is thus pivotable about the bearing FL1.
  • the other end of the Articulated arm 26 is pivoted at the lower pivot point 23 of the connecting rod 8.
  • Fig. 3a is the plunger 3 in bottom dead center UT.
  • the lower mounted in the bearing FL1 articulated arm 26 has completed a pivoting movement, which is indicated by the pivoting path S1.
  • the articulated arms 24 and 26 have moved with their hinge points 22 and 23 accordingly.
  • the Fig. 3b shows the plunger 3 at top dead center OT.
  • the articulated arms 24, 26 and the base side G of the connecting rod 8 take a largely extended position, which is characterized in that the deflection of the articulated arm 24 and 26 is only about 4 ° relative to the stroke axis HU of the plunger 3.
  • FIG. 4 the O-frame 29 of the machine frame 2 with mounted ram 3 is shown in perspective.
  • the O-frame 29 is made of high-strength nodular cast iron.
  • At the foot-side rear side of the O-frame 29 are each two with lateral openings 31 (see Fig. 8 ) provided, backpack-like pockets 30 formed.
  • an eccentric shaft 6 is mounted, whose axes D are aligned with each other in alignment.
  • the mutually facing shaft ends 32 of the two eccentric shafts 6 are rotatably connected to each other by a coupling piece 33 (see Fig. 6 ).
  • Each of the eccentric shafts 6 engages in each case the disk-like connecting rod 8 inserted in the pockets 30, which is mounted on the eccentric shaft 6 by a connecting rod bearing.
  • the pockets 30 on the O-frame 29 form the fixed bearing FL2 for the eccentric shafts 6 and support the three-phase synchronous motors 34 and 35 described below (see Fig. 6 ).
  • Fig. 5 making a cut along the AA line of the Fig. 4 represents, illustrates the extended position of Fig. 3 schematically illustrated disc-like articulated arm 24 and 26 at the top dead center of the plunger. 3
  • the Fig. 6 shows a fragmentary perspective view of the interconnected with the coupling piece 33, mutually facing shaft ends 32 of the eccentric shafts 6.
  • the opposite ends 36 of the eccentric shafts 6 are each connected via a planetary gear 37 with the three-phase synchronous motors 34 and 35.
  • a three-phase synchronous motors 34 and 35 can be used by the special kinematics of the toggle drive according to the invention small engines with high torques at low engine speeds without flywheel. Therefore, torque motors have proven particularly suitable.
  • the parallel synchronous three-phase synchronous motors 34 and 35 are each connected to a computer belonging to the computer 38, which processes the machine data and the two motors identical path-time characteristics (see Fig. 7 ).
  • the setpoints which are based on the machine and process data of the fineblanking or forming process, are determined via a virtual master axis.
  • the virtual axis is a non-existing drive whose speed and bearing values are determined by the computer and given to the motors as control variables in coordination with the process parameters.
  • the two torque motors run as slave axes to the virtual master axis.
  • the Fig. 8 shows the machine frame 2 in a perspective view. It is composed of the O-frame 29 and a head piece 39.
  • the head piece 39 is placed on the O-frame 29 and fixed by means of high-strength screw 27 at the upper part of the O-frame 2 torsion-free. For this purpose, 29 holes are introduced with internal thread in the upper part of the O-frame, are screwed into the bolt with external thread.
  • the head piece 39 is fixed by nuts screwed onto the bolts.
  • the head piece 39 is designed such that a schematic illustrated fine cutting or forming head 41 with an upper tool part 40 can be mounted thereto, which can be positioned in a hanging arrangement through the upper opening of the O-frame 29 in height.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Claims (12)

  1. Presse mécanique pour le découpage fin, le formage et/ou l'estampage de pièces, comprenant un bâti de machine (2) composé d'une tête (39) et d'un châssis en O (29), un coulisseau (3) guidé verticalement dans le châssis en O (29) sur un axe de levage (HU), une commande à genouillère, dont la bielle (8) ayant un angle de travail sensiblement équilatéral possède deux points articulés (22 ; 23) disposés l'un au-dessus de l'autre et dont le point articulé inférieur (23), par l'intermédiaire d'un bras articulé inférieur (26) conçu à la manière d'un disque, pivote autour d'un palier fixe (FL1) et le point articulé supérieur (25) associé au coulisseau (3) prend au point mort haut, avec le bras articulé inférieur (24) conçu à la manière d'un disque, une position étirée par rapport à l'axe de levage (HU), ledit palier fixe (FL1) se trouvant sur l'axe de levage (HU) du coulisseau (3) et à ladite bielle (8) étant associés deux arbres à excentrique (6) en alignement avec leurs axes, qui sont logés dans des paliers fixes (FL2) et dont les extrémités opposées (36), en vue de leur entraînement parallèle simultané, sont reliées à des moteurs synchrones triphasés (34 ; 35) sans volant, chacune par l'intermédiaire d'un engrenage planétaire (37), lesdits moteurs pouvant être réglés sur des paramètres espace-temps identiques entre eux au moyen d'un ordinateur (38) relié aux moteurs (34 ; 35), caractérisée en ce que la commande à genouillère est disposée au-dessous du coulisseau (3) et les paliers fixes (FL1 ; FL2) de la commande à genouillère resp. des arbres à excentrique (6) sont disposés sur le châssis en O du côté de la base, ledit coulisseau (3) étant muni d'un plateau servant à la fixation d'une partie d'outil inférieure, et en ce qu'une tête de découpage fin ou de formage (40) à laquelle est fixée une partie d'outil supérieure (41) et qui s'avance dans le châssis en O (29), est accrochée suspendue à la tête (39) de la presse.
  2. Presse mécanique selon la revendication 1, caractérisée en ce que les paliers fixes (FL1) comprennent des poches (30) de type sac à dos servant de logement aux arbres à excentrique (6) et de support aux moteurs synchrones triphasés (34 ; 35).
  3. Presse mécanique selon la revendication 1, caractérisée en ce que les extrémités (32) tournées l'une vers l'autre des arbres à excentrique (6) sont reliées mécaniquement de manière fixe.
  4. Presse mécanique selon la revendication 3, caractérisée en ce que la liaison mécanique fixe desdites extrémités d'arbres (32) est une pièce d'accouplement (37).
  5. Presse mécanique selon la revendication 1, caractérisée en ce que les moteurs synchrones triphasés (34 ; 35) sont commandés en tant qu'unité par l'ordinateur (38).
  6. Presse mécanique selon la revendication 1, caractérisée en ce que les extrémités (32) tournées l'une vers l'autre des arbres à excentrique (6) ne sont pas reliées entre elles et les extrémités opposées (36) des arbres à excentrique (6) sont reliées à entraînement direct aux moteurs synchrones triphasés (34 ; 35).
  7. Presse mécanique selon la revendication 1, caractérisée en ce que les moteurs synchrones triphasés (34 ; 35) sont commandés indépendamment l'un de l'autre par l'ordinateur (38).
  8. Presse mécanique selon la revendication 1, caractérisée en ce que les moteurs synchrones triphasés (34 ; 35) sont des moteurs-couple présentant un couple élevé à basse vitesse du moteur.
  9. Presse mécanique selon la revendication 1, caractérisée en ce que les moteurs synchrones triphasés (34 ; 35) sont reliés, chacun par l'intermédiaire d'un engrenage (37), à une extrémité de l'arbre à excentrique (36).
  10. Presse mécanique selon la revendication 9, caractérisée en ce que l'engrenage (37) est un engrenage planétaire.
  11. Presse mécanique selon la revendication 1, caractérisée en ce que la tête (39) est maintenue sans torsion sur le châssis en O (29), grâce à des assemblages vissés (27).
  12. Presse mécanique selon la revendication 1, caractérisée en ce que le châssis en O (29) et la tête (39) sont en fonte sphéroïdale.
EP20090007351 2009-06-03 2009-06-03 Presse mécanique destinée à couper fin, déformer et/ou imprégner des pièces usinées Active EP2258498B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP20090007351 EP2258498B1 (fr) 2009-06-03 2009-06-03 Presse mécanique destinée à couper fin, déformer et/ou imprégner des pièces usinées
CA2705649A CA2705649C (fr) 2009-06-03 2010-05-27 Presse mecanique pour decoupage fin, formage et/ou estampage de pieces
JP2010126757A JP5702079B2 (ja) 2009-06-03 2010-06-02 被加工物を精密打抜き、変形、および／または型押し加工するための機械プレス装置
KR1020100052464A KR101765904B1 (ko) 2009-06-03 2010-06-03 공작물을 파인 블랭킹, 포밍 및/또는 스탬핑하기 위한 기계 프레스
US12/793,127 US8230781B2 (en) 2009-06-03 2010-06-03 Mechanical press for fine blanking, forming and/or stamping of work pieces
CN2010101974031A CN101905263A (zh) 2009-06-03 2010-06-03 用于精密冲裁、成形和/或冲压工件的机械压力机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090007351 EP2258498B1 (fr) 2009-06-03 2009-06-03 Presse mécanique destinée à couper fin, déformer et/ou imprégner des pièces usinées

Publications (2)

Publication Number Publication Date
EP2258498A1 EP2258498A1 (fr) 2010-12-08
EP2258498B1 true EP2258498B1 (fr) 2012-12-26

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EP20090007351 Active EP2258498B1 (fr) 2009-06-03 2009-06-03 Presse mécanique destinée à couper fin, déformer et/ou imprégner des pièces usinées

Country Status (6)

Country Link
US (1) US8230781B2 (fr)
EP (1) EP2258498B1 (fr)
JP (1) JP5702079B2 (fr)
KR (1) KR101765904B1 (fr)
CN (1) CN101905263A (fr)
CA (1) CA2705649C (fr)

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CN107159832B (zh) * 2017-06-20 2018-11-27 安徽普伦智能装备有限公司 一种自动锻打机器人
EA038760B1 (ru) * 2018-06-20 2021-10-15 Республиканское Государственное Предприятие На Праве Хозяйственного Ведения "Институт Механики И Машиноведения Имени Академика У.А. Джолдасбекова" Механизм кривошипно-коленного пресса
JP7186314B2 (ja) * 2019-05-27 2022-12-08 ボブスト メックス ソシエテ アノニム プレストグル機構を備えたプラテンプレス
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JP2005118792A (ja) * 2003-10-14 2005-05-12 Amino:Kk プレス装置
JP4418394B2 (ja) * 2005-04-13 2010-02-17 コマツ産機株式会社 サーボプレス
DE102006056520A1 (de) * 2006-11-30 2008-06-05 Schuler Pressen Gmbh & Co. Kg Presse mit Kurvenkorrektur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3762223B1 (fr) * 2018-03-05 2022-06-15 Arcofil S.A. Presse electrique a moteur torque

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EP2258498A1 (fr) 2010-12-08
CA2705649C (fr) 2017-02-14
US20100319554A1 (en) 2010-12-23
KR20100130567A (ko) 2010-12-13
US8230781B2 (en) 2012-07-31
KR101765904B1 (ko) 2017-08-07
CN101905263A (zh) 2010-12-08
JP5702079B2 (ja) 2015-04-15
JP2010279999A (ja) 2010-12-16
CA2705649A1 (fr) 2010-12-03

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