EP0993932A2 - Presse entrainée par genouillère - Google Patents

Presse entrainée par genouillère Download PDF

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Publication number
EP0993932A2
EP0993932A2 EP99120146A EP99120146A EP0993932A2 EP 0993932 A2 EP0993932 A2 EP 0993932A2 EP 99120146 A EP99120146 A EP 99120146A EP 99120146 A EP99120146 A EP 99120146A EP 0993932 A2 EP0993932 A2 EP 0993932A2
Authority
EP
European Patent Office
Prior art keywords
crank drive
drive
press
crank
wishbone
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.)
Withdrawn
Application number
EP99120146A
Other languages
German (de)
English (en)
Other versions
EP0993932A3 (fr
Inventor
Leopold Ing. Seslar
Jozef Dipl.-Ing. Smrkolj
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.)
STRIP's d o o Podjetje za svetovanje trzenje in proizvodnjo
Original Assignee
STRIP's d o o Podjetje za svetovanje trzenje in proizvodnjo
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 STRIP's d o o Podjetje za svetovanje trzenje in proizvodnjo filed Critical STRIP's d o o Podjetje za svetovanje trzenje in proizvodnjo
Publication of EP0993932A2 publication Critical patent/EP0993932A2/fr
Publication of EP0993932A3 publication Critical patent/EP0993932A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0029—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height
    • B30B15/0035—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height using an adjustable connection between the press drive means and the press slide
    • 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

Definitions

  • the invention relates to a press with a toggle lever drive.
  • toggle press In a known toggle press (DE-PS 38 701) is a toggle with a support leg articulated to the press frame and one with a Working plunger connected drive leg via a wishbone driven by a crank drive.
  • the knee joint ends the support leg and the drive leg are at a distance articulated to each other on the wishbone that their articulation points together with the pivot point of the crank drive on the wishbone form an equilateral triangle, the same sides of which form one at the articulation point include the acute angle of the crank drive.
  • the distance of the crank drive from the toggle is in relation to the length of the wishbone selected so that the knee joint over the extended position the knee lever is moved out. This will in a work cycle a double pass of the toggle lever through the bottom dead center causes.
  • the Toggle lever drive a support leg articulated on the press frame, the one with its other end at a pusher-side pivot point
  • the wishbone is articulated while one with a working ram pivotably connected drive leg with a pivot point on the frame of the wishbone is connected, which is at a distance from the ram side Articulation point for the support leg is arranged.
  • the wishbone is connected at its other end to a crank drive.
  • the triangle formed by the articulation points on the wishbone is included chosen in relation to the distance of the crank drive from the toggle lever so that when the plunger goes down, this first in one certain position is held, although the crank drive continues to run, then shifted to its bottom dead center and then back to be moved to top dead center.
  • a is with a press frame pivotally connected support leg as Wishbone trained, forming at its other end the knee joint with a drive leg for driving a working ram connected is.
  • a drawbar is pivotally attached to the wishbone, which is connected at its other end to a crank drive.
  • the invention has for its object a further press with a To provide toggle lever drive that can be used in a versatile manner with a simple structure is.
  • the wishbone is provided with one end on a crank drive is articulated, and at the other end a drive leg and a Support leg of the knee lever with the formation of knee articulation points Are hinged to each other.
  • the length of the wishbone between The knee joint and crank drive are adjustable. In this way the lifting height and at the same time the dependence of the working ram travel from the angular position of the crank drive to various work tasks to adjust.
  • the ram path can be so adjust the working ram into one during a working cycle first and in a second bottom dead center can be moved.
  • crank drive is arranged relative to the toggle lever is that the wishbone during a work cycle in essentially works on pressure, and that the two knee articulation points together with the pivot point of the crank drive a right or Form an obtuse-angled triangle, the right or obtuse angle of which one of the two knee articulation points.
  • the adaptation of the press according to the invention is particularly simple to achieve various work tasks when the wishbone to Length adjustment at least one handlebar section with one with one Has internal thread provided hole in which a threaded bolt with its one end area engages with its other end area is connected to the crank drive or toggle lever.
  • the wishbone has at least two different distances to the axis of rotation of the crank drive is articulated thereon.
  • the stroke can be influenced in a targeted manner.
  • a practical embodiment of the invention is characterized by this from that the crank drive via a worm gear from a motor, preferably by an electric motor, especially one in both Rotating directions working electric motor is driven.
  • the electric motor for the drive of the crank drive is designed as a stepper motor.
  • crank drive Electric motor from a motor control circuit depending on one the rotational position signal indicating the rotational position of the crank drive is controllable by a rotary position sensor assigned to the crank drive is generated, with an inductive, a capacitive, an optical or a mechanical sensor is provided is.
  • the press according to the invention has a press frame 10 with a base frame 11, a work table attached to it 12 and a press carrier 13 on the base frame 11 in the working direction A is adjustable to adjust the working distance of the press to be able to.
  • the press carrier points 13 support tabs 14, between which a support leg 15 of a toggle lever 16 is arranged.
  • the support leg 15 is with his in figure 1 upper end hinged to the support tabs 14 so that a support joint 17 is formed.
  • the support leg 15 is under Formation of a frame-side knee pivot point 18 at one Wishbone 19 hinged, the other end at the pivot point 20 on a crank disk 21 of a crank drive 22 is pivotally attached.
  • the crank drive 22 is on a mounting bracket 13 'held.
  • At a distance from the frame's knee pivot point 18 is a drive leg in a knee pivot point 23 on the working ram side 24 articulated attached at the other end under Forming a working joint 25 with a working plunger 26 articulated is.
  • the working plunger 26 is in a direction not shown in the working direction A slidably guided on the press carrier 13 and at its free end trained to hold a pressing, cutting or embossing tool.
  • the preferably length-adjustable wishbone 23 has a crank-side Handlebar section 27 with an internally threaded Longitudinal bore in which a threaded bolt 28 with one end is screwed in.
  • the other end of the threaded bolt is 28 in an internally threaded longitudinal bore of a knee joint Screwed handlebar section 29, which has an L-shaped extension 30, at which the frame-side knee pivot point 18 is formed.
  • the Threaded bolt 28 is provided with an actuating means 31 in its center and has opposite threads at its ends so that its both ends simultaneously into or out of the handlebar sections 27, 29 can be unscrewed. This way the length of the Wishbone 19 and in particular the distance between the work side Knee pivot point 23 and the pivot point 20 of the crank drive adjustable.
  • the corresponding threaded sections of the threaded bolt 28 lock nuts 32 provided.
  • crank disk 21 of the crank drive 22 has in the illustrated embodiment three different articulation points 20, 20 ', 20' 'for the Wishbones that are at different distances from the axis of rotation 33 ' a drive shaft 33 are arranged on which the crank disc 21 is attached is.
  • the crank disk forming the crank of the crank drive 22 21 can also be a sector crank disk with two or more articulation points or a simple crank can be provided which has several articulation points has or is adjustable in length.
  • a sector disk or the like may be provided.
  • the crank disk 21 is driven by an electric motor 34 which is preferably operable in both directions of rotation, and the one Worm gear 35, not shown, on the drive shaft 33 works.
  • the electric motor 34 is controlled by a motor control circuit 36 the from a rotary position sensor 37 a the rotary position of the Rotary position signal indicating crank disk 21 via a line 38 is fed.
  • the rotary position sensor can be a suitable electromagnetic inductive, optical, mechanical or electromechanical Be feelers.
  • the toggle lever 16 is then pulled back into its extended position S, which is shown in Figure 2a with dashed lines.
  • the Support leg 15 is again in the same position as described above, is the wishbone 19 compared to that with solid Lines shown pivoted around the knee articulation point 18, so that the working joint 25 is in an upper lower dead center position oUT is located and the working plunger 26 opposite the lower one bottom dead center position is slightly offset upwards. This offset is by a suitable choice of crank length r and the length of the Wishbone 19 adjustable.
  • the length of the wishbone 19 and in particular the distance between the articulation point 20 of the crank drive 22 and the ram side Knee pivot point 23 varies, so there are different dependencies of the working ram path from the angle of rotation ⁇ of the crankshaft pulley 21.
  • the working ram travel is the height h above the lower lower one Dead center shown.
  • the stroke curve H 1.1 ( ⁇ ) shown in FIG. 3a results.
  • the deflection of the articulation point 20 of the wishbone 19 on the crank disk 21 is shown in dashed lines. If the articulation point is moved outwards, that is to say the distance from the axis of the drive shaft 33 or the crank length r is increased, as can be seen in FIG. 4a on the basis of the dashed curve, the stroke of the working ram 26 is increased, as is the stroke curve H 2 1 ( ⁇ ) shows. In both cases, the working ram 26 passes through a single bottom dead center position UT.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
EP99120146A 1998-10-12 1999-10-08 Presse entrainée par genouillère Withdrawn EP0993932A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19846951 1998-10-12
DE1998146951 DE19846951A1 (de) 1998-10-12 1998-10-12 Presse mit Kniehebelantrieb

Publications (2)

Publication Number Publication Date
EP0993932A2 true EP0993932A2 (fr) 2000-04-19
EP0993932A3 EP0993932A3 (fr) 2000-04-26

Family

ID=7884182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99120146A Withdrawn EP0993932A3 (fr) 1998-10-12 1999-10-08 Presse entrainée par genouillère

Country Status (2)

Country Link
EP (1) EP0993932A3 (fr)
DE (1) DE19846951A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2818927A1 (fr) * 2000-12-29 2002-07-05 Schuler Pressen Gmbh & Co Presse avec un coulisseau
FR2818928A1 (fr) * 2000-12-29 2002-07-05 Schuler Pressen Gmbh & Co Systeme de definition de la structure d'une presse
EP2258498A1 (fr) * 2009-06-03 2010-12-08 Feintool Intellectual Property AG Presse mécanique destinée à couper fin, déformer et/ou imprégner des pièces usinées
CN103317741A (zh) * 2012-03-23 2013-09-25 许勒压力机有限责任公司 具有操作压力机的若干模式的压力机驱动件及用于操作压力机驱动件的方法
CN104379336A (zh) * 2012-03-23 2015-02-25 许勒压力机有限责任公司 带有两个工作区域的压力机驱动器
EP3130809A1 (fr) 2015-08-13 2017-02-15 Pneumax S.p.A. Unité d'actionnement d'efficacité optimisée du type de levier articulé
IT202100013343A1 (it) * 2021-05-24 2022-11-24 Jofa S R L Pressa elettrica per la caratterizzazione di ammortizzatori di veicoli

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005000913A1 (de) * 2005-01-06 2006-07-27 Helmut Obieglo Doppel-Hubgetriebe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE157536C (fr) *
CH344609A (de) * 1955-04-18 1960-02-15 Svetsmekano Ab Vorrichtung zur Änderung des Hubes des Werkzeughalters an Blechschneidemaschine
DE1931790A1 (de) * 1968-08-30 1970-07-30 Leipzig Inst Foerdertech Hydrostatischer Antrieb
CS148900B1 (fr) * 1970-06-10 1973-05-24
DE2407438B2 (de) * 1974-02-16 1976-09-09 L. Schuler GmbH, 7320 Göppingen Kniegelenkantrieb fuer stoessel von schnitt- oder umformpressen
DE3142679C2 (de) * 1981-10-28 1984-05-10 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Kurbelgetriebener Hebel-Gelenktrieb für Stössel von Pressen
DE3230958A1 (de) * 1982-08-20 1984-02-23 L. Schuler GmbH, 7320 Göppingen Muenzpraegepresse mit massnahmen fuer die allseitige fuehrung des praegestueckes in der presse
DE3736353A1 (de) * 1987-10-27 1989-05-11 Rudolf Klaschka Langhub-exzenterpresse
US5588344A (en) * 1994-06-13 1996-12-31 Murata Machinery, Ltd. Electric servo motor punch press ram drive

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2818927A1 (fr) * 2000-12-29 2002-07-05 Schuler Pressen Gmbh & Co Presse avec un coulisseau
FR2818928A1 (fr) * 2000-12-29 2002-07-05 Schuler Pressen Gmbh & Co Systeme de definition de la structure d'une presse
DE10065255A1 (de) * 2000-12-29 2002-07-11 Schuler Pressen Gmbh & Co Presse mit einem Stößel
DE10065255B4 (de) * 2000-12-29 2005-02-17 Schuler Pressen Gmbh & Co. Kg Mehrstufenpresse
EP2258498A1 (fr) * 2009-06-03 2010-12-08 Feintool Intellectual Property AG Presse mécanique destinée à couper fin, déformer et/ou imprégner des pièces usinées
CN103317741A (zh) * 2012-03-23 2013-09-25 许勒压力机有限责任公司 具有操作压力机的若干模式的压力机驱动件及用于操作压力机驱动件的方法
CN104379336A (zh) * 2012-03-23 2015-02-25 许勒压力机有限责任公司 带有两个工作区域的压力机驱动器
CN103317741B (zh) * 2012-03-23 2016-05-25 许勒压力机有限责任公司 具有操作压力机的若干模式的压力机驱动件及用于操作压力机驱动件的方法
CN104379336B (zh) * 2012-03-23 2017-07-18 许勒压力机有限责任公司 带有两个工作区域的压力机驱动器
EP3130809A1 (fr) 2015-08-13 2017-02-15 Pneumax S.p.A. Unité d'actionnement d'efficacité optimisée du type de levier articulé
IT202100013343A1 (it) * 2021-05-24 2022-11-24 Jofa S R L Pressa elettrica per la caratterizzazione di ammortizzatori di veicoli

Also Published As

Publication number Publication date
EP0993932A3 (fr) 2000-04-26
DE19846951A1 (de) 2000-04-20

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