EP2243571B1 - Système de réglage de la course d'une presse mécanique à cinématique de coulisses - Google Patents

Système de réglage de la course d'une presse mécanique à cinématique de coulisses Download PDF

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Publication number
EP2243571B1
EP2243571B1 EP09405070A EP09405070A EP2243571B1 EP 2243571 B1 EP2243571 B1 EP 2243571B1 EP 09405070 A EP09405070 A EP 09405070A EP 09405070 A EP09405070 A EP 09405070A EP 2243571 B1 EP2243571 B1 EP 2243571B1
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EP
European Patent Office
Prior art keywords
scotch yoke
press
eccentric ring
toothed
worm
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
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EP09405070A
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German (de)
English (en)
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EP2243571A1 (fr
Inventor
Sergio Formenti
Paolo Civardi
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.)
Farina Presse SpA
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Farina Presse SpA
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Publication date
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Priority to EP09405070A priority Critical patent/EP2243571B1/fr
Priority to AT09405070T priority patent/ATE543587T1/de
Publication of EP2243571A1 publication Critical patent/EP2243571A1/fr
Application granted granted Critical
Publication of EP2243571B1 publication Critical patent/EP2243571B1/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
    • B21J9/10—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
    • 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
    • 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
    • B30B1/263—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 work stroke adjustment means

Definitions

  • the invention relates to a mechanical press for the hot and cold forging of metals with a ram adjustment system that uses a toothed eccentric ring moved by a worm and is located in a link kinematics (see, for example, US Pat US-A-5,666,838 ).
  • the fixed-stroke tappet movement is provided by the rotation of an eccentric shaft within a kinematic system consisting of one or more connecting rods and similar kinematic systems.
  • a ram adjustment system must be connected to change the thickness of the pressed parts and maintain their dimensional accuracy, which depends on tool wear, press deflection and temperature variations during the production run.
  • the known systems for height adjustment use complex and bulky devices with relatively long times for adjustment of the press part thickness.
  • the purpose of the invention is the realization of a linkage kinematics press having a reliable system for rapid adjustment of the ram without suspending the production line of the forging line.
  • the main feature of the invention is the plunger adjustment system consisting of a toothed eccentric ring inserted into the gate and rotated by a worm.
  • the scenery is in two parts and locked by screws, which are stretched with springs to pick up the game between scenery and toothed eccentric ring.
  • the upper part of the gate is raised by means of hydraulic cylinders which oppose the closing force exerted by the springs.
  • the worm which is driven by a geared motor and whose position is advantageously monitored by an encoder, allows the toothed eccentric ring to run freely in its seat.
  • This device allows the adjustment of the plunger in a very short time without interrupting the production cycle of the press.
  • a temperature sensor inserted in the lower part of the gate constantly measures the temperature of the bearing bush in the toothed eccentric ring.
  • the temperature sensor is located on a holder in the lower part of the gate and at the height of the recess of the toothed eccentric ring in contact with the bearing bush. At the height of the contact point with the temperature sensor, the bearing bush is rotated concentrically to the outer diameter of the toothed eccentric ring, so that a fixed position of the temperature sensor is ensured.
  • the plunger movement (18) (19) is dependent on the rotation of the eccentric shaft (20) in a gate kinematics integrated into the plunger structure (Fig. 1).
  • the link can run freely in a horizontal direction in the ram seat (18) (19) while forcing the ram to perform a vertical descent and ascent with a stroke twice the shaft eccentricity (FIG. 20).
  • the height adjustment of the plunger for adjusting the tools by means of a toothed eccentric ring (11), which is housed in the gate (01) (04) and is rotated by a worm (09).
  • the scenery consists of a lower part (01) and an upper part (04) are mechanically locked with screws (06); These screws are clamped with disc springs, so that they lock the toothed eccentric ring (11) in his seat and cancel the existing between the toothed eccentric ring (11) and the slide (01) (04) existing game.
  • hydraulic cylinders (5) oppose the closing force of the upper part of the link (04) and restore the clearance provided between the toothed eccentric ring (11) and the link (01) (04).
  • the toothed eccentric ring (11) can rotate freely in its seat by means of the worm (09).
  • the worm (09) is located in the upper part of the gate (04) to eliminate further stresses during the working phase of the press, and allows to mount axially a geared motor (08) for turning the worm itself (09). Their position is controlled over the entire rotation time of the toothed eccentric ring (11) by means of an encoder (07).
  • This device allows the adjustment of the plunger in a very short time during the production cycle between the bounce, without the production must be interrupted.
  • the position of the temperature sensor (03), which remains in contact using a spring with the bearing bush (12) does not change in the central part of the bearing bush (12), because this is concentric with the outer diameter of the toothed eccentric ring (11) is rotated.

Landscapes

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

Claims (6)

  1. Presse excentrique mécanique avec cinématique de coulisses pour le déplacement d'un coulisseau (18, 19), qui comprend un système de réglage de coulisseau composé de :
    - un anneau excentrique endenté (11), qui est monté dans la coulisse (01, 04), et d'une vis sans fin pivotante (9) grâce à un moteur-réducteur hydraulique (8) ;
    et
    - une partie inférieure de coulisse (01) et une partie supérieure de coulisse (04) ; caractérisés par
    - les parties inférieure et supérieure de la coulisse (01, 04) sont reliées au moyen de boulons (06) serrés par ressorts et de cylindres hydrauliques (05), de telle façon que durant le fonctionnement de la presse, les parties inférieure et supérieure de la coulisse (01, 04) sont verrouillées par les boulons serrés par ressort (06), et pendant la phase de réglage, peuvent être déverrouillées par les cylindres hydrauliques (05), qui sont logés dans la partie supérieure de la coulisse (04).
  2. Presse excentrique mécanique avec cinématique à coulisses conformément à la revendication 1, caractérisé par le fait que la vis sans fin (09) est logée dans la partie supérieure de la coulisse (04) dans un siège de forme ovale, afin de permettre le levage de la vis sans fin (09) et le déblocage des dents hors de l'anneau excentrique endenté (11), ce qui facilite le montage et le démontage de la vis sans fin (09).
  3. Presse excentrique mécanique avec cinématique à coulisses conformément à la revendication 1, caractérisé par le fait que dans la partie inférieure de la coulisse (01) se trouvent un support de sonde de température (02) et une sonde de température (03), qui mesure la température d'un coussinet (12) ; le support de la sonde de température (02), qui est intégré dans une rainure de passage de l'anneau excentrique endenté (11), est aussi utilisé comme verrouillage mécanique pour leur rotation.
  4. Presse excentrique mécanique avec cinématique à coulisses conformément aux revendications 1 et 3, caractérisé par le fait que le coussinet (12) à proximité de la rainure de passage dans l'anneau excentrique endenté (11) présente une zone de contact pour la sonde de température (03), cette zone de contact est concentrique vers le diamètre externe de l'anneau excentrique endenté (11) et est nécessaire pour maintenir constante la position de la sonde de température (03) lors de la rotation du coussinet (12).
  5. Presse excentrique mécanique avec cinématique à coulisses conformément à la revendication 1, caractérisé par le fait, que l'anneau excentrique endenté (11) comporte sur son cercle une rangée de rainures de graissage (10) et de trous de graissage radiaux (14), qui permettent de récupérer le produit lubrifiant injecté dans la partie inférieure de la coulisse (01), afin de permettre une distribution la plus optimale possible du produit lubrifiant dans le coussinet (12), dans lequel court une onde excentrique (20).
  6. Presse excentrique mécanique avec cinématique à coulisses conformément à la revendication 1, caractérisé par le fait que le moteur-réducteur hydraulique (08) est placé de manière axiale par rapport à la vis sans fin (09), et en vue d'une optimisation de l'entraînement sans apparition de nouveau jeu, est amené sur l'un des deux côtés de la partie supérieure de la coulisse (04).
EP09405070A 2009-04-20 2009-04-20 Système de réglage de la course d'une presse mécanique à cinématique de coulisses Active EP2243571B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09405070A EP2243571B1 (fr) 2009-04-20 2009-04-20 Système de réglage de la course d'une presse mécanique à cinématique de coulisses
AT09405070T ATE543587T1 (de) 2009-04-20 2009-04-20 Stösselverstellsystem für mechanische pressen mit kulissenkinematik

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09405070A EP2243571B1 (fr) 2009-04-20 2009-04-20 Système de réglage de la course d'une presse mécanique à cinématique de coulisses

Publications (2)

Publication Number Publication Date
EP2243571A1 EP2243571A1 (fr) 2010-10-27
EP2243571B1 true EP2243571B1 (fr) 2012-02-01

Family

ID=41137818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09405070A Active EP2243571B1 (fr) 2009-04-20 2009-04-20 Système de réglage de la course d'une presse mécanique à cinématique de coulisses

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EP (1) EP2243571B1 (fr)
AT (1) ATE543587T1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962388B (zh) * 2012-11-27 2017-03-22 孟红 精锻机锤头调节蜗杆轴向缓冲结构
CN102921859B (zh) * 2012-11-27 2017-03-29 孟红 精锻机锁紧缸缓冲机构
DE102015222995A1 (de) * 2015-11-20 2017-05-24 Sms Group Gmbh Weggebundene Presse mit Kulissenstein
WO2021019017A2 (fr) * 2019-07-30 2021-02-04 Kama Gmbh Entraînement oscillant de machine
CN116274819A (zh) * 2023-03-10 2023-06-23 浙江精勇精锻机械有限公司 带新型蜗杆及电子模高的精密模锻机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB105749A (fr) *
DE3705235A1 (de) * 1987-02-19 1988-09-01 Eumuco Ag Fuer Maschinenbau Umformmaschine, z.b. schmiedepresse u. dgl., mit hublagenverstellung
US5666838A (en) * 1995-06-05 1997-09-16 Efco, Incorporated Forging press for use with automated multi-station transport system

Also Published As

Publication number Publication date
EP2243571A1 (fr) 2010-10-27
ATE543587T1 (de) 2012-02-15

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