EP0551919A1 - Dispositif d'équilibrage dynamique, réglable, synchronisé pour presse ou poinçonneuse à excentrique avec réglage de la course automatique - Google Patents

Dispositif d'équilibrage dynamique, réglable, synchronisé pour presse ou poinçonneuse à excentrique avec réglage de la course automatique Download PDF

Info

Publication number
EP0551919A1
EP0551919A1 EP93100625A EP93100625A EP0551919A1 EP 0551919 A1 EP0551919 A1 EP 0551919A1 EP 93100625 A EP93100625 A EP 93100625A EP 93100625 A EP93100625 A EP 93100625A EP 0551919 A1 EP0551919 A1 EP 0551919A1
Authority
EP
European Patent Office
Prior art keywords
eccentric
stroke
sliding sleeve
stroke adjustment
press
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Withdrawn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
EP93100625A
Other languages
German (de)
English (en)
Inventor
Heinz Häussermann
Horst Dipl.-Ing.(Fh) Rossel
Andreas Dipl.-Ing.(Ba) Siegel
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.)
WERKZEUGMASCHINEN GMBH ZEULENRODA
Original Assignee
Werkzeugmaschinen Zeulenroda 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 Werkzeugmaschinen Zeulenroda GmbH filed Critical Werkzeugmaschinen Zeulenroda GmbH
Publication of EP0551919A1 publication Critical patent/EP0551919A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B30B15/0064—Counterbalancing means for movable press elements
    • 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 an eccentric press or punch with the features specified in the preamble of claim 1.
  • EP 0 248 919 discloses a device on a press with an eccentric shaft for adjusting the ram stroke by adjusting the resulting eccentricity of an eccentric and an eccentric bushing mounted thereon.
  • a connecting rod is mounted on the eccentric bushing, the eccentric bushing on the eccentric being selectively detachable and fixable in the direction of rotation by actuating means, and the loosened eccentric bushing being fixable on a part which cannot be rotated with the eccentric shaft and in this state the eccentric shaft for adjusting the tappet stroke is rotatable.
  • the adjustment of the resulting eccentricity of the eccentric takes place in that the bearing of the eccentric bushing on the eccentric having the oversize is provided with a press fit produced between these two parts with cylindrical fitting surfaces which can be released by supplying pressure oil via at least one groove in at least one fitting surface.
  • a disadvantage of the device known from EP 0 248 919 on a press with an eccentric shaft for adjusting the ram stroke is that the connection between the eccentric bushing and the eccentric is frictional.
  • the frictional engagement can be reduced by superimposed swinging movement or shocks, so that it may the connection slides.
  • the frictional connection also has the disadvantage that with unchanged design of the eccentric shaft, mass balancing can only be carried out within certain limits, e.g. the surface pressure may be too low; this in turn means that the press or punch can only be used to a limited extent.
  • the present invention is based on the task of further developing the generic eccentric press or punch, in which the stroke of the connecting rod can be changed via a stroke adjustment device, in such a way that dynamic mass balancing in a structurally simple form high reliability is achieved.
  • the eccentric press or punch according to the invention is characterized by a mass balancing device, the mass balancing and the stroke adjustment device has at least one push rod which is mounted on an eccentric bushing which is arranged on the eccentric shaft.
  • a balancing mass is arranged at the free end of the push rod.
  • the compensating mass is dimensioned so that, together with the mass of the push rod, it corresponds to the unbalanced mass of the connecting rod and the plunger and the adjoining tool. If the working stroke of the connecting rod is changed, the stroke of the connecting rod is also changed such that the longitudinal main axis of inertia coincides with the axis of rotation of the eccentric shaft. This achieves dynamic mass balancing. This leads to a longer service life of the bearings of the eccentric shaft.
  • the eccentric press or punch runs without vibration even at high working speeds or a high speed of the eccentric shaft. This eliminates the need for a machine foundation.
  • the mass balancing device and the stroke adjustment device each have a sliding sleeve for a push rod or a connecting rod for each eccentric bushing with two internal toothing sections and an intermediate toothing-free section.
  • One toothed section is in constant engagement with an external toothing of the eccentric bushing even when the sliding sleeve is displaced, while the other toothed section of the sliding sleeve is only in its one axial position in engagement with the external toothing of a rotationally fixed driving disk.
  • the toothing of the drive plate with the toothless portion of the sliding sleeve after release of the drive plate comes into positive engagement with a stationary locking part when the same displacement movement is continued.
  • a displacement device is provided which synchronously displaces at least one sliding sleeve of the mass balancing device and at least one sliding sleeve of the stroke adjustment device into the respective toothing engagement.
  • the adjustment device is designed according to the stroke adjustment device known from DE-PS 31 12 382.
  • the use of the same parts has the advantage that the manufacturing costs of the parts can be reduced.
  • Another advantage is that the Stroke of the connecting rod and the push rod is always the same opposite, since the eccentric bush on which the push rod is arranged is offset by 180 ° with respect to an eccentric bush on which the connecting rod is arranged.
  • the drive plate of the mass balancing device is moved synchronously with at least one drive plate of the stroke adjustment device by means of a displacement device.
  • the displacement device has a rod which can be displaced on its axis and which is formed with claws which engage on the sliding sleeves of the mass balance and the stroke adjustment device. In this way, a simple and reliable displacement of the sliding sleeves into the respective tooth engagement is guaranteed.
  • the sliding sleeve is formed with grooves in which the claws engage, since in this way the rotation of the sliding sleeve resulting from the adjustment of the stroke can be taken into account in a simple constructive manner.
  • the claws can be moved using a cylinder-piston unit.
  • the cylinder-piston unit can be a standard unit that ensures a synchronous displacement of the sliding sleeves.
  • the connecting rod is advantageously arranged in the center between the two push rods on the eccentric shaft, as a result of which the eccentric shaft is evenly stressed.
  • a push rod is advantageously arranged between them, preferably centrally between the connecting rods.
  • This arrangement has the advantage that a dynamic mass balance is achieved with connecting rods lying close together, since the installation space for the mass balancing device is small. If the two connecting rods are far apart, it is expedient to design the mass balancing device with two push rods.
  • the push rods are advantageously arranged close to the connecting rods, which minimizes any tilting moment.
  • the connecting rods can be arranged between the connecting rods or the connecting rods between the connecting rods.
  • a balancing mass which is arranged on both push rods is advantageously used. This simplifies the assembly of the balancing body on the push rods.
  • the balancing mass can advantageously consist of several individual ones Masses exist that can be adapted to the changed mass ratios, for example, when changing tools.
  • the stroke adjustment of the push rod takes place synchronously with the stroke adjustment of the connecting rod.
  • This has the advantage that the stroke adjustment of the push rod and the connecting rod takes place in one operation.
  • This in turn means that the set-up times of the eccentric press or eccentric punch can be minimized, which increases the running time of the machine.
  • This has an economic advantage because the eccentric press or punch can be better utilized.
  • FIG. 1 shows the longitudinal section through an eccentric press.
  • the eccentric press has a press frame 1 with a table top 2 and an eccentric shaft 3.
  • the eccentric shaft 3 is mounted in the main bearings 7, which is arranged in the press frame 1.
  • two eccentric bushes 4 are arranged, on which the connecting rods 6 are mounted by means of bearings 8.
  • the connecting rods 6 act on the press ram 9.
  • a connecting rod 10 is arranged between the connecting rods 6 and is mounted on an eccentric bush 12 via a bearing 11.
  • the eccentric bushing 12 is arranged on the eccentric shaft 3.
  • On the free end of the push rod 10, a balancing mass 13 is attached, which is guided on the guide rods 14.
  • the eccentric bushes 4 of the stroke adjusting device and the eccentric bushing 12 of the mass balancing device are normally connected in a rotationally fixed manner to the eccentric shaft 3 via a releasable locking device of the parts 15, 16 for the stroke adjustment of the connecting rods 6 and the connecting rod 10. Since the parts 15, 16 of the stroke adjustment device and the mass balancing device are the same parts, they have the same reference numbers and the same designations.
  • Each locking device consists of a rotationally fixed drive plate 15 and the eccentric bushing 4 and a displaceable sliding sleeve overlapping the ring gear 16.
  • the drive plates 15 are connected in a rotationally fixed manner to the eccentric shaft 3 via a tongue and groove connection.
  • the sliding sleeves 16 can each be disengaged from the teeth of the rotationally fixed drive plate 15 by means of displaceable bolts 17, for which purpose the bolts 17 engage on both sides by means of rotatably mounted discs 18 in an annular groove 19 of the sliding sleeve 16 for their displacement.
  • the bolt 20 has a washer 18a, 18b on both ends thereof, the washer 18a engaging in the annular groove 19 of the driving disk 16, which serves to adjust the stroke of the connecting rod, and the washer 18b in the annular groove 19 of the driving disk 16, which is used for Stroke adjustment of the push rod is used.
  • the bolts 17, 20 can be piston rods of a cylinder-piston unit (28).
  • a sliding sleeve 16 with two internal toothing sections 20, 21 is provided. Between the toothing sections 20, 21 there is a toothing-free section 22.
  • the toothing section 20 of the sliding sleeve 16 is permanently in engagement with an external toothing 23 of the eccentric bushing 4 or 12.
  • the toothing section 21 of the sliding sleeve 16 is only in an axial position of the sliding sleeve with the external toothing 24 of the shaft-rotatable driving plate 15 connected.
  • the sliding sleeve 16 gives the drive plate 15 free, since the toothless section 22 of the sliding sleeve 16 lies above the drive plate 15. With the sliding movement of the sliding sleeve 16, there is a positive engagement of a locking part 25 in the sliding sleeve 16.
  • an indicator disc with a corresponding perforation is arranged on the eccentric shaft 3 outside the press frame 1 and is connected to the eccentric press or punch control via a stroke position sensor 26.
  • a new stroke position u can be set via the indicator disc 5 with the stroke position transmitter 26.
  • the aforementioned sequence can be controlled via an angular coding of the eccentric shaft position.
  • a limit switch 26, 27 is assigned to each bolt 17 or 20, which outputs a control signal to a control device that enables a stroke adjustment or the continued running of the machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
EP93100625A 1992-01-17 1993-01-15 Dispositif d'équilibrage dynamique, réglable, synchronisé pour presse ou poinçonneuse à excentrique avec réglage de la course automatique Withdrawn EP0551919A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4201095 1992-01-17
DE19924201095 DE4201095A1 (de) 1992-01-17 1992-01-17 Synchron verstellbarer dynamischer massenausgleich an exzenterpressen oder -stanzen mit automatischer hubverstellung

Publications (1)

Publication Number Publication Date
EP0551919A1 true EP0551919A1 (fr) 1993-07-21

Family

ID=6449688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100625A Withdrawn EP0551919A1 (fr) 1992-01-17 1993-01-15 Dispositif d'équilibrage dynamique, réglable, synchronisé pour presse ou poinçonneuse à excentrique avec réglage de la course automatique

Country Status (2)

Country Link
EP (1) EP0551919A1 (fr)
DE (1) DE4201095A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0955155A1 (fr) * 1998-05-07 1999-11-10 Peter Rüesch-Pfändler Presse
EP1149688A2 (fr) * 2000-04-25 2001-10-31 Aida Engineering Ltd. Dispositif de réglage de la course pour une presse
EP1867468A1 (fr) * 2006-06-12 2007-12-19 Haulick + Roos GmbH Dispositif de réglage de course ainsi qu'une presse, une presse de poinçonnage ou de formage muni d'un tel dispositif
DE10241106B4 (de) * 2001-09-11 2008-09-04 Kabushiki Kaisha Yamada Dobby, Bisai Pressmaschine
DE102008046763A1 (de) * 2008-09-11 2009-11-05 Schuler Pressen Gmbh & Co. Kg Schnellläuferpresse mit Trägheitsmomentausgleich
CN102562983A (zh) * 2012-02-17 2012-07-11 济南铸造锻压机械研究所有限公司 曲柄连杆传动机构及冲床主传动系统
AT517406A1 (de) * 2015-07-06 2017-01-15 Andritz Tech And Asset Man Gmbh Presse mit variablem massenausgleich
CN106436033A (zh) * 2016-11-03 2017-02-22 汕头三辉无纺机械厂有限公司 单主轴单针区针刺机的针刺机构
CN108943792A (zh) * 2018-09-05 2018-12-07 山东迈特力重机有限公司 一种双联凸轮传动机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112382A1 (de) * 1981-03-28 1982-10-14 RWM-Raster-Werkzeugmaschinen GmbH, 7136 Ötisheim Hubverstelleinrichtung fuer exzenterpressen oder -stanzen
DE8127545U1 (de) * 1981-09-19 1983-04-14 Maschinenfabrik Weingarten Ag, 7987 Weingarten Vollautomatische Verstellung des Stösselhubes bei Doppelständerpressen mit zwei auf Exzenterbüchsen einer Exzenterwelle hintereinander angeordneten Pleuel
EP0248917A1 (fr) * 1986-06-06 1987-12-16 L. SCHULER GmbH Dispositif de réglage de la course du coulisseau dans une presse à arbre à excentrique
WO1990005252A1 (fr) * 1988-11-08 1990-05-17 Barton, Gordon, Page Mecanisme de transmission a variation de vitesse

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450038A (en) * 1967-04-04 1969-06-17 Bliss Co High speed press

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112382A1 (de) * 1981-03-28 1982-10-14 RWM-Raster-Werkzeugmaschinen GmbH, 7136 Ötisheim Hubverstelleinrichtung fuer exzenterpressen oder -stanzen
DE8127545U1 (de) * 1981-09-19 1983-04-14 Maschinenfabrik Weingarten Ag, 7987 Weingarten Vollautomatische Verstellung des Stösselhubes bei Doppelständerpressen mit zwei auf Exzenterbüchsen einer Exzenterwelle hintereinander angeordneten Pleuel
EP0248917A1 (fr) * 1986-06-06 1987-12-16 L. SCHULER GmbH Dispositif de réglage de la course du coulisseau dans une presse à arbre à excentrique
WO1990005252A1 (fr) * 1988-11-08 1990-05-17 Barton, Gordon, Page Mecanisme de transmission a variation de vitesse

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0955155A1 (fr) * 1998-05-07 1999-11-10 Peter Rüesch-Pfändler Presse
EP1149688A2 (fr) * 2000-04-25 2001-10-31 Aida Engineering Ltd. Dispositif de réglage de la course pour une presse
EP1149688A3 (fr) * 2000-04-25 2002-12-04 Aida Engineering Ltd. Dispositif de réglage de la course pour une presse
DE10241106B4 (de) * 2001-09-11 2008-09-04 Kabushiki Kaisha Yamada Dobby, Bisai Pressmaschine
EP1867468A1 (fr) * 2006-06-12 2007-12-19 Haulick + Roos GmbH Dispositif de réglage de course ainsi qu'une presse, une presse de poinçonnage ou de formage muni d'un tel dispositif
DE102008046763A1 (de) * 2008-09-11 2009-11-05 Schuler Pressen Gmbh & Co. Kg Schnellläuferpresse mit Trägheitsmomentausgleich
CN102562983A (zh) * 2012-02-17 2012-07-11 济南铸造锻压机械研究所有限公司 曲柄连杆传动机构及冲床主传动系统
CN102562983B (zh) * 2012-02-17 2014-12-24 济南铸造锻压机械研究所有限公司 曲柄连杆传动机构及数控转塔冲床主传动系统
AT517406A1 (de) * 2015-07-06 2017-01-15 Andritz Tech And Asset Man Gmbh Presse mit variablem massenausgleich
AT517406B1 (de) * 2015-07-06 2019-12-15 Andritz Tech & Asset Man Gmbh Presse mit variablem massenausgleich
CN106436033A (zh) * 2016-11-03 2017-02-22 汕头三辉无纺机械厂有限公司 单主轴单针区针刺机的针刺机构
CN108943792A (zh) * 2018-09-05 2018-12-07 山东迈特力重机有限公司 一种双联凸轮传动机构

Also Published As

Publication number Publication date
DE4201095A1 (de) 1993-07-22

Similar Documents

Publication Publication Date Title
EP0248917B1 (fr) Dispositif de réglage de la course du coulisseau dans une presse à arbre à excentrique
DE3610569C2 (de) Scheibenbremse für Fahrzeuge
DE622246C (de) Schlupf- oder Schaltkupplung mit federbelasteter Steuereinrichtung
EP2905378B1 (fr) Dispositif de damage
EP0551919A1 (fr) Dispositif d'équilibrage dynamique, réglable, synchronisé pour presse ou poinçonneuse à excentrique avec réglage de la course automatique
DE2533284C2 (de) Schlagbohrmaschine
DE3000532C2 (de) Antriebseinrichtung für Biegeschlitten von Stanz-Biegeautomaten
DE3112382C2 (de) Hubverstelleinrichtung für Exzenterpressen oder -stanzen
DE202006009857U1 (de) Presse, Stanz- oder Umformautomat
AT510081B1 (de) Schmiedevorrichtung
EP0281593B1 (fr) Transmission a embrayage de securite anti-surcharge
EP0446755B1 (fr) Appareil d'ébranlement
DE19521598C2 (de) Lineargetriebe
DE3702884C1 (en) Friction clutch with actuating device
DE2643534C3 (de) Spindelpresse mit ununterbrochen umlaufendem, angetriebenen Schwungrad
DE2740382A1 (de) Hubeinstellung fuer eine exzenterpresse
DE3412147A1 (de) Vorrichtung zur umwandlung einer drehbewegung in translatorische bewegungen
DE3835811C2 (fr)
DE2840236C3 (de) Schwingungserreger mit verstellbarer Unwucht
DE3508186A1 (de) Vorrichtung zum erzeugen einer bewegung
DE2747170C2 (de) Kurbel- oder Exzenterpresse
DE3614672A1 (de) Vorrichtung zum simulieren und messen der an einer spindelpresse auftretenden kraefte bzw. momente
DE2935090C2 (de) Schwingungserreger mit verstellbarer Unwucht
DE3034009C2 (de) Vorrichtung zur Verstellung des Stößelhubes bei Doppelständerpressen mit zwei nebeneinander liegenden Exzenterwellen
DE3026922C2 (de) Mechanismus zum Synchronisieren von zwei motorgetriebenen Vorrichtungen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH ES IT LI

17P Request for examination filed

Effective date: 19931202

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: WERKZEUGMASCHINEN GMBH ZEULENRODA

17Q First examination report despatched

Effective date: 19950126

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19950808