EP0546265A1 - Single shaft punch press - Google Patents

Single shaft punch press Download PDF

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Publication number
EP0546265A1
EP0546265A1 EP19920116064 EP92116064A EP0546265A1 EP 0546265 A1 EP0546265 A1 EP 0546265A1 EP 19920116064 EP19920116064 EP 19920116064 EP 92116064 A EP92116064 A EP 92116064A EP 0546265 A1 EP0546265 A1 EP 0546265A1
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EP
European Patent Office
Prior art keywords
lever
connecting rod
articulated
machine frame
punch 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.)
Granted
Application number
EP19920116064
Other languages
German (de)
French (fr)
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EP0546265B1 (en
Inventor
Oskar Eigenmann
Helmut Messner
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.)
Bruderer AG
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Bruderer AG
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Publication date
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Publication of EP0546265A1 publication Critical patent/EP0546265A1/en
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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
    • 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
    • B30B1/02—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 lever mechanism
    • B30B1/06—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 lever mechanism operated by cams, eccentrics, or cranks
    • 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
    • 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
    • Y10T83/8824—With provision for dynamic balance
    • 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
    • Y10T83/8848—Connecting rod articulated with tool support

Definitions

  • the invention relates to a single-shaft punch press, with a machine frame; an eccentric shaft which is rotatably mounted in the machine frame; a tool holder, which is guided in the machine frame so that it can be moved back and forth in a straight line; a connecting rod arrangement with connecting rod members which are drive-connected to the eccentric shaft; a lever device with individual lever units, each lever unit being articulated at a first location with connecting rod members of the connecting rod arrangement and articulated at a second location on the machine frame and each having a further articulation point removed from these two locations, a tappet arrangement with tappets which are connected to the any further articulation points and are articulated on the tool carrier.
  • the eccentric loading of the tools, especially the upper tool, in such punch presses causes different difficulties and disadvantages.
  • the permissible load against the edge areas of the tools decreases considerably and sometimes reaches zero.
  • the storage locations e.g. between the plunger and the tool carrier and also between the plunger and the drive links articulated thereon, which are exposed to high wear and increased friction when the tools are eccentrically loaded.
  • Eccentric loads also cause canting and elastic deformation, such as bending elongated components of the punch press and thus inaccuracies in the manufacture of the stamped parts produced.
  • the invention seeks to remedy this.
  • the invention solves the problem of creating a single-shaft punch press, the connecting rod arrangement of which is articulated to a lever device which has individual, separate lever units which are independent of one another with individual connecting rod members of the connecting rod arrangement and with the machine frame are connected in an articulated manner, with four plungers running parallel to one another, each of which is articulated on one of the lever units, so that the tool carrier of the single-shaft punch press is suspended from four plungers.
  • the advantages achieved by the invention are essentially to be seen in the fact that the plungers can thus be arranged in a square on the tool carrier in such a way that considerable eccentric loads can be absorbed. This results in less wear on the bearing and connection points of the press and a reduction in frictional forces. Because the force curve from the tool carrier to the eccentric shaft takes place in four independent ways, the punch press can be built with significantly smaller dimensions.
  • the eccentric shaft 2 is rotatably mounted in the machine frame 1 of the single-shaft punch press via roller bearings 22 and 23.
  • the eccentric shaft 2 is connected via a clutch / brake device to a flywheel which is drive-connected to an electric motor via a belt drive.
  • the eccentric shaft 2 has a central eccentric section 18 and a further eccentric section 19 and 20 on each side of the central eccentric section 18 (see FIG. 2).
  • a yoke-shaped counterweight 24 is supported on the central eccentric section 18 via roller bearings 25.
  • This balance weight 24 serves to balance the rotating inertial forces in the operation of the punch press.
  • links 26 and 27 are articulated by means of pivot pins 28 and 29, which in turn are articulated on the counterweight 32 via additional pivot pins 30 and 31 to compensate for the oscillating mass forces.
  • FIG. 2A shows a further embodiment, which will be discussed further below.
  • lever units 6, 6A or 7, 7A or 8, 8A or 9, 9A of the lever device of the punch press are now also articulated to one of their ends on these bolts 21. In the figures, these are one ends generally at 35 identified.
  • the lever units in the illustrated embodiment are supported on the machine frame 1 via threaded spindles 37.
  • the height of the ends 36 of the lever units and thus of the upper tool carrier 3 of the punch press is achieved by rotating these threaded spindles.
  • the details of this construction for height adjustment of the tool carrier are disclosed in US Pat. No. 5,052,257, the disclosure of which is expressly pointed out here.
  • Each connecting rod 4 or 5 is assigned two one-armed lever units, which are mounted on the bolt 21 at one end.
  • the lever units are composed of lever sections arranged side by side only for design reasons.
  • the connecting rod 4 is assigned the lever unit with the lever sections 8, 8A and the lever unit with the lever sections 9, 9A. These lever units are thus arranged in pairs.
  • lever units together with the lever sections 8, 8A and 9, 9A form a pair of levers driven by the connecting rod 4.
  • the connecting rod 5 is assigned the lever unit with the lever sections 6, 6A and the lever unit with the lever sections 7, 7A. These lever units also form a pair of levers and, for constructional reasons, are composed of the lever sections mentioned.
  • All of the individual lever sections 6, 6A, 7, 7A, 8, 8A, 9, 9A, which make up the entire lever device, are single-armed levers which at one end on the common bolt 21 and at the other end on the threaded spindle 37 and thus indirectly on the machine frame 1 are supported.
  • lever sections engage in a fork-like manner at their ends on the bolt 21.
  • the lever portion 9A has a fork-shaped end, and the lever portion 8A extends into the space defined by the prongs of the fork.
  • the lever section 8 is forked and receives the lever section 9 in the fork.
  • the lever sections 7A and 6 are forked and receive the lever sections 6A and 7 in the fork.
  • Each lever unit has a further articulation point with pivot pins 10, 11, 12, 13 arranged between its ends 35, 36.
  • the lever unit with the lever sections 6, 6A contains the pivot pin 10
  • the lever unit with the lever sections 8, 8A contains the pivot pin 11
  • the lever unit with the lever sections 7, 7A contains the pivot pin 12
  • the lever unit with the lever sections 9, 9A contains the pivot pin 13.
  • the plunger 14 is articulated on the pivot pin 10, on the pivot pin 11 the plunger 15, on the pivot pin 12 of the plunger 16 and on the pivot pin 13 of the plunger 17.
  • This single-shaft punch press thus has four rams.
  • the plungers 14, 15, 16, 17 are finally articulated on the tool carrier 3.
  • the tool carrier 3 has four guide columns 38, by means of which it is guided in the machine frame 1.
  • FIG. 2A A variant is shown in which both connecting rod members 4, 5 are divided, that is to say a total of four individual connecting rods 4A, 4B and 5A, 5B are present.
  • a pair of levers e.g. the levers 6 and 7 assigned to Figure 3.

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

Abstract

Four lever units (6, 6A; 7, 7A; 8, 8A, 9, 9A) are articulated to the connecting rod arrangement (4, 5) via a common bolt (21). Each lever unit pushes a pusher rod (14, 15, 16, 17) of the punch press. The pusher rods (14, 15, 16, 17) are arranged in a rectangle. As a result of this, considerable eccentric loads can be accommodated and the punch press can be considerably smaller for a given press output. <IMAGE>

Description

Die Erfindung betrifft eine Einwellen-Stanzpresse, mit einem Maschinenrahmen; einer Exzenterwelle, die im Maschinenrahmen drehbar gelagert ist; einem Werkzeugträger, der im Maschinenrahmen geradlinig hin- und herbewegbar geführt ist; einer Pleuelanordnung mit Pleuelgliedern, die mit der Exzenterwelle antriebsverbunden sind; einer Hebeleinrichtung mit einzelnen Hebeleinheiten, wobei jede Hebeleinheit bei einer ersten Stelle mit Pleuelgliedern der Pleuelanordnung gelenkig verbunden und bei einer zweiten Stelle am Maschinenrahmen gelenkig abgestützt ist und jeweils eine von diesen zwei Stellen entfernte, weitere Anlenkstelle aufweist, einer Stösselanordnung mit Stösseln, die an den jeweligen weiteren Anlenkstellen und am Werkzeugträger angelenkt sind.The invention relates to a single-shaft punch press, with a machine frame; an eccentric shaft which is rotatably mounted in the machine frame; a tool holder, which is guided in the machine frame so that it can be moved back and forth in a straight line; a connecting rod arrangement with connecting rod members which are drive-connected to the eccentric shaft; a lever device with individual lever units, each lever unit being articulated at a first location with connecting rod members of the connecting rod arrangement and articulated at a second location on the machine frame and each having a further articulation point removed from these two locations, a tappet arrangement with tappets which are connected to the any further articulation points and are articulated on the tool carrier.

Die aussermittige Belastung der Werkzeuge, insbesondere des Oberwerkzeuges in solchen Stanzpressen bewirkt unterschiedliche Schwierigkeiten und Nachteile. Für eine gegebene Maschinengrösse nimmt die zulässige Belastung gegen die Randbereiche der Werkzeuge beträchtlich ab und erreicht mitunter den Wert Null. Es sind unter anderem die Lagerstellen, z.B. zwischen Stössel und Werkzeugträger und auch zwischen Stössel und daran angelenkte Antriebsglieder, welche bei aussermittigen Belastungen der Werkzeuge hohem Verschleiss und erhöhter Reibung ausgesetzt sind. Weiter tritt auch ein erhöhter Verschleiss an den Stössel- und Werkzeugführungen und im Werkzeug auf. Aussermittige Belastungen bewirken zudem Verkantungen und elastische Verformungen, wie beispielsweise ein Ausbiegen von langgestreckten Bauteilen der Stanzpresse und damit Herstellungsungenauigkeiten der hergestellten Stanzteile.The eccentric loading of the tools, especially the upper tool, in such punch presses causes different difficulties and disadvantages. For a given machine size, the permissible load against the edge areas of the tools decreases considerably and sometimes reaches zero. Among other things, the storage locations, e.g. between the plunger and the tool carrier and also between the plunger and the drive links articulated thereon, which are exposed to high wear and increased friction when the tools are eccentrically loaded. There is also increased wear on the ram and tool guides and in the tool. Eccentric loads also cause canting and elastic deformation, such as bending elongated components of the punch press and thus inaccuracies in the manufacture of the stamped parts produced.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe eine Einwellen-Stanzpresse zu schaffen, deren Pleuelanordnung mit einer Hebeleinrichtung gelenkig verbunden ist, die einzelne, voneinander getrennte Hebeleinheiten aufweist, die unabhängig voneinander mit einzelnen Pleuelgliedern der Pleuelanordnung und mit dem Maschinenrahmen gelenkig verbunden sind, wobei vier parallel zueinander verlaufende Stössel vorhanden sind, die jeweils an einer der Hebeleinheiten angelenkt sind, so dass der Werkzeugträger der Einwellen-Stanzpresse an vier Stösseln aufgehängt ist.The invention seeks to remedy this. The invention, as characterized in the claims, solves the problem of creating a single-shaft punch press, the connecting rod arrangement of which is articulated to a lever device which has individual, separate lever units which are independent of one another with individual connecting rod members of the connecting rod arrangement and with the machine frame are connected in an articulated manner, with four plungers running parallel to one another, each of which is articulated on one of the lever units, so that the tool carrier of the single-shaft punch press is suspended from four plungers.

Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass damit die Stössel derart im Viereck am Werkzeugträger angeordnet werden können, dass beträchtliche aussermittige Belastungen aufgenommen werden können. Damit entsteht ein kleinerer Verschleiss bei Lager- und Verbindungsstellen der Presse und eine Verminderung von Reibkräften. Weil der Kraftverlauf vom Werkzeugträger bis zur Exzenterwelle auf vier voneinander unabhängigen Wegen erfolgt, lässt sich die Stanzpresse mit bedeutend kleineren Abmessungen bauen.The advantages achieved by the invention are essentially to be seen in the fact that the plungers can thus be arranged in a square on the tool carrier in such a way that considerable eccentric loads can be absorbed. This results in less wear on the bearing and connection points of the press and a reduction in frictional forces. Because the force curve from the tool carrier to the eccentric shaft takes place in four independent ways, the punch press can be built with significantly smaller dimensions.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeichnungen näher erläutert.

  • Figur 1 einen Vertikalschnitt durch eine Einwellen-Stanzpresse,
  • Figur 2 einen Schnitt entlang der Linie 11-11 der Figur 1,
  • Figur 2A eine Variante der Ausbildung des Pleuels, und
  • Figur 3 einen Schnitt entlang der Linie 111-111 der Figur 1.
The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment.
  • FIG. 1 shows a vertical section through a single-shaft punch press,
  • FIG. 2 shows a section along the line 11-11 of FIG. 1,
  • 2A shows a variant of the design of the connecting rod, and
  • 3 shows a section along the line 111-111 of FIG.

Im Maschinenrahmen 1 der Einwellen-Stanzpresse ist die Exzenterwelle 2 über Wälzlager 22 und 23 rotierbar gelagert. Die Exzenterwelle 2 ist über eine Kupplungs-/Bremsvorrichtung mit einem Schwungrad verbunden, welches über einem Riementrieb mit einem Elektromotor antriebsverbunden ist. Diese genannten Bauteile sind allgemein bekannt und üblich bei Stanzpressen, so dass sich eine detaillierte Beschreibung derselben erübrigt.The eccentric shaft 2 is rotatably mounted in the machine frame 1 of the single-shaft punch press via roller bearings 22 and 23. The eccentric shaft 2 is connected via a clutch / brake device to a flywheel which is drive-connected to an electric motor via a belt drive. These components mentioned are generally known and common in punch presses, so that a detailed description thereof is unnecessary.

Die Exzenterwelle 2 weist einen mittleren Exzenterabschnitt 18 und zu beiden Seiten des mittleren Exzenterabschnittes 18 je einen weiteren Exzenterabschnitt 19 bzw. 20 auf (siehe Fig. 2). Ein jochförmiges Ausgleichsgewicht 24 ist über Wälzlager 25 auf dem mittleren Exzenterabschnitt 18 abgestützt. Dieses Ausgleichsgewicht 24 dient zum Ausgleichen der rotierenden Massenkräfte im Betrieb der Stanzpresse. An den seitlichen Enden des Ausgleichsgewichts 24 sind Lenker 26 bzw. 27 mittels Schwenkzapfen 28 bzw. 29 angelenkt, die ihrerseits über weitere Schwenkzapfen 30 bzw. 31 am Ausgleichsgewicht 32 zum Ausgleichen der oszillierenden Massenkräfte angelenkt sind. Diese Konstruktion ist in der US-PS 4 757 734 derselben Anmelderin beschrieben und es wird aus Gründen der Offenbarung auf die genannte Patentschrift hingewiesen.The eccentric shaft 2 has a central eccentric section 18 and a further eccentric section 19 and 20 on each side of the central eccentric section 18 (see FIG. 2). A yoke-shaped counterweight 24 is supported on the central eccentric section 18 via roller bearings 25. This balance weight 24 serves to balance the rotating inertial forces in the operation of the punch press. At the lateral ends of the counterweight 24, links 26 and 27 are articulated by means of pivot pins 28 and 29, which in turn are articulated on the counterweight 32 via additional pivot pins 30 and 31 to compensate for the oscillating mass forces. This construction is described in US Pat. No. 4,757,734 by the same applicant and reference is made to said patent for reasons of disclosure.

Auf den zu beiden Seiten des mittleren Exzenterabschnittes 18 angeordneten weiteren Exzenterabschnitten 19 bzw. 20 ist jeweils ein Pleuelglied 4 bzw. 5 über Wälzlager 33 bzw. 34 gelagert. Die Pleuelglieder 4 bzw. 5 nach der Ausführung gemäss Figur 2 sind unten in Form einer dreifach gezinkten Gabel ausgebildet. Ein Bolzen 21 erstreckt sich durch die durch die Zinken der Gabel bestimmten Wangen der Pleuelglieder 4 und 5. Die Figur 2A zeigt eine weitere Ausführung, auf die weiter unten noch eingegangen wird.On the other eccentric sections 19 and 20 arranged on both sides of the central eccentric section 18, a connecting rod member 4 or 5 is mounted via roller bearings 33 or 34. The connecting rod members 4 and 5 according to the embodiment according to FIG. 2 are formed below in the form of a triple-pronged fork. A bolt 21 extends through the cheeks of the connecting rod members 4 and 5 determined by the prongs of the fork. FIG. 2A shows a further embodiment, which will be discussed further below.

An diesen Bolzen 21 sind nun auch die vier Hebeleinheiten 6, 6A bzw. 7, 7A bzw. 8, 8A, bzw. 9, 9A der Hebeleinrichtung der Stanzpresse an einem ihrer Enden angelenkt. In den Figuren sind diese einen Enden allgemein mit der Bezugsziffer 35 identifiziert.The four lever units 6, 6A or 7, 7A or 8, 8A or 9, 9A of the lever device of the punch press are now also articulated to one of their ends on these bolts 21. In the figures, these are one ends generally at 35 identified.

Bei ihren entgegengesetzten Enden, die allgemein mit der Bezugsziffer 36 identifiziert sind, sind die Hebeleinheiten bei der gezeichneten Ausführung über Gewindespindeln 37 am Maschinenrahmen 1 abgestützt. Die Höhenstellung der Enden 36 der Hebeleinheiten und somit des oberen Werkzeugträgers 3 der Stanzpresse erfolgt durch ein Rotieren dieser Gewindespindeln. Die Einzelheiten dieser Konstruktion zur Höhenverstellung des Werkzeugträgers sind in der US-PS 5 052 257 offenbart, auf welche Offenbarung hier ausdrücklich hingewiesen wird.At their opposite ends, which are generally identified by reference numeral 36, the lever units in the illustrated embodiment are supported on the machine frame 1 via threaded spindles 37. The height of the ends 36 of the lever units and thus of the upper tool carrier 3 of the punch press is achieved by rotating these threaded spindles. The details of this construction for height adjustment of the tool carrier are disclosed in US Pat. No. 5,052,257, the disclosure of which is expressly pointed out here.

Nachfolgend wird nun die Hebeleinrichtung der Stanzpresse erläutert. Dazu wird insbesondere auf die Figur 3 hingewiesen. Jedem Pleuelglied 4 bzw. 5 sind zwei einarmige Hebelabeinheiten zugeordnet, die einerends auf dem Bolzen 21 gelagert sind.The lever device of the punch press will now be explained. In particular, reference is made to FIG. 3. Each connecting rod 4 or 5 is assigned two one-armed lever units, which are mounted on the bolt 21 at one end.

Die Hebeleinheiten setzen sich lediglich aus konstruktiven Gründen aus nebeneinander angeordneten Hebelabschnitten zusammen.The lever units are composed of lever sections arranged side by side only for design reasons.

Dabei sind dem Pleuel 4 die Hebeleinheit mit den Hebelabschnitten 8, 8A und die Hebeleinheit mit den Hebelabschnitten 9, 9A zugeordnet. Diese Hebeleinheiten sind somit paarweise angeordnet.The connecting rod 4 is assigned the lever unit with the lever sections 8, 8A and the lever unit with the lever sections 9, 9A. These lever units are thus arranged in pairs.

In anderen Worten bilden die Hebeleinheiten mit den Hebelabschnitten 8, 8A und 9, 9A zusammen ein vom Pleuel 4 getriebenes Hebelpaar.In other words, the lever units together with the lever sections 8, 8A and 9, 9A form a pair of levers driven by the connecting rod 4.

Dem Pleuel 5 ist die Hebeleinheit mit den Hebelabschnitten 6, 6A und die Hebeleinheit mit den Hebelabschnitten 7, 7A zugeordnet. Auch diese Hebeleinheiten bilden ein Hebelpaar und setzen sich aus konstruktiven Gründen aus den genannten Hebelabschnitten zusammen.The connecting rod 5 is assigned the lever unit with the lever sections 6, 6A and the lever unit with the lever sections 7, 7A. These lever units also form a pair of levers and, for constructional reasons, are composed of the lever sections mentioned.

Alle, die gesamte Hebeleinrichtung ausmachenden einzelnen Hebelabschnitte 6, 6A, 7, 7A, 8, 8A, 9, 9A sind einarmige Hebel, die bei einem Ende auf dem gemeinsamen Bolzen 21 und beim anderen Ende auf der Gewindespindel 37 und somit indirekt auf dem Maschinenrahmen 1 abgestützt sind.All of the individual lever sections 6, 6A, 7, 7A, 8, 8A, 9, 9A, which make up the entire lever device, are single-armed levers which at one end on the common bolt 21 and at the other end on the threaded spindle 37 and thus indirectly on the machine frame 1 are supported.

Wie insbesondere aus der Figur 3 und auch aus der Figur 2 hervorgeht, greifen diese Hebelabschnitte bei ihren Enden auf dem Bolzen 21 gabelförmig ineinander. Der Hebelabschnitt 9A weist ein gabelförmiges Ende auf, und der Hebelabschnitt 8A erstreckt sich in den von den Zinken der Gabel umgrenzten Zwischenraum. Der Hebelabschnitt 8 ist gegabelt und nimmt in der Gabel den Hebelabschnitt 9 auf. Weiter sind die Hebelabschnitte 7A und 6 gegabelt und nehmen in der Gabel die Hebelabschnitte 6A, bzw. 7 auf.As can be seen in particular from FIG. 3 and also from FIG. 2, these lever sections engage in a fork-like manner at their ends on the bolt 21. The lever portion 9A has a fork-shaped end, and the lever portion 8A extends into the space defined by the prongs of the fork. The lever section 8 is forked and receives the lever section 9 in the fork. Furthermore, the lever sections 7A and 6 are forked and receive the lever sections 6A and 7 in the fork.

Jede Hebeleinheit weist eine zwischen seinen Enden 35, 36 angeordnete weitere Anlenkstelle mit Schwenkzapfen 10, 11, 12, 13 auf.Each lever unit has a further articulation point with pivot pins 10, 11, 12, 13 arranged between its ends 35, 36.

Die Hebeleinheit mit den Hebelabschnitten 6, 6A enthält den Schwenkzapfen 10, die Hebeleinheit mit den Hebelabschnitten 8, 8A enthält den Schwenkzapfen 11, die Hebeleinheit mit den Hebelabschnitten 7, 7A enthält den Schwenkzapfen 12 und die Hebeleinheit mit den Hebelabschnitten 9, 9A enthält den Schwenkzapfen 13.The lever unit with the lever sections 6, 6A contains the pivot pin 10, the lever unit with the lever sections 8, 8A contains the pivot pin 11, the lever unit with the lever sections 7, 7A contains the pivot pin 12 and the lever unit with the lever sections 9, 9A contains the pivot pin 13.

Am Schwenkzapfen 10 ist der Stössel 14, am Schwenkzapfen 11 der Stössel 15, am Schwenkzapfen 12 der Stössel 16 und am Schwenkzapfen 13 der Stössel 17 angelenkt. Somit weist diese Einwellen-Stanzpresse vier Stössel auf. Bei ihrem unteren Ende sind die Stössel 14,15, 16,17 schliesslich am Werkzeugträger 3 angelenkt. Der Werkzeugträger 3 weist vier Führungssäulen 38 auf, mittels welchen er im Maschinenrahmen 1 geführt ist.The plunger 14 is articulated on the pivot pin 10, on the pivot pin 11 the plunger 15, on the pivot pin 12 of the plunger 16 and on the pivot pin 13 of the plunger 17. This single-shaft punch press thus has four rams. At their lower end, the plungers 14, 15, 16, 17 are finally articulated on the tool carrier 3. The tool carrier 3 has four guide columns 38, by means of which it is guided in the machine frame 1.

In der Figur 2A ist eine Variante gezeigt, bei welcher beide Pleuelglieder 4,5 geteilt sind, also insgesamt vier einzelne Pleuel 4A, 4B und 5A, 5B vorhanden sind. Damit ist also jeweils einem Pleuel ein Hebelpaar, z.B. die Hebel 6 und 7 der Figur 3 zugeordnet.A variant is shown in FIG. 2A in which both connecting rod members 4, 5 are divided, that is to say a total of four individual connecting rods 4A, 4B and 5A, 5B are present. This means that a pair of levers, e.g. the levers 6 and 7 assigned to Figure 3.

Aus der obigen Beschreibung geht hervor, dass die vier Stössel 14,15,16,17 die Ecken eines rechtwinkligen Vierecks bestimmen. Damit können aussermittige Belastungen ohne die eingangs erwähnten Nachteile in der Stanzpresse aufgenommen werden. Und weiter, da der Kraftverlauf durch die verschiedenen Bauteile der Stanzpresse bis zur Exzenterwelle 2 bzw. Pleuelglieder 4,5 in vier voneinander unabhängigen Wegen erfolgt, lässt sich diese Stanzpresse im Vergleich mit den früheren Stanzpressen für eine gegebene Pressengrösse, die durch die vom Werkzeug ausübbare Kraft bestimmt ist, mit beträchtlich kleineren Abmessungen bauen.It can be seen from the above description that the four plungers 14, 15, 16, 17 determine the corners of a right-angled square. Eccentric loads can thus be absorbed in the punch press without the disadvantages mentioned at the beginning. Furthermore, since the force curve through the various components of the punch press up to the eccentric shaft 2 or connecting rods 4, 5 takes place in four mutually independent ways, this punch press can be compared to the previous punch presses for a given press size by the one that can be exercised by the tool Force is designed to build with considerably smaller dimensions.

Claims (5)

1. Einwellen-Stanzpresse, mit - einem Maschinenrahmen (1), - einer Exzenterwelle (2), die im Maschinenrahmen (1) drehbar gelagert ist, - einem Werkzeugträger (3), der im Maschinenrahmen (1) geradlinig hin- und herbewegbar geführt ist, - einer Pleuelanordnung mit Pleuelgliedern (4,5;4A,4B;5A,5B), die mit der Exzenterwelle (2) antriebsverbunden sind, - einer Hebeleinrichtung mit Hebeleinheiten (6,6A;7,7A;8,8A;9,9A), wobei jede Hebeleinheit (6,6A;7, 7A;8,8A;9,9A) bei einer ersten Stelle mit Pleuelgliedern (4,5;4A,4B;5A,5B) der Pleuelanordnung gelenkig verbunden und bei einer zweiten Stelle am Maschinenrahmen (1) gelenkig abgestützt ist und jeweils eine von diesen zwei Stellen entfernte, weitere Anlenkstelle (10,11,12,13) aufweist, - einer Stösselanordnung mit Stösseln (14,15, 16,17), die einerends an den jeweiligen weiteren Anlenkstellen (10, 11,12,13) und andererends am Werkzeugträger (3) angelenkt sind,
dadurch gekennzeichnet, dass die Hebeleinrichtung vier einzelne, voneinander getrennte Hebeleinheiten (6,6A;7,7A;8,8A;9,9A) aufweist und jede Hebeleinheit einzeln und unabhängig von den anderen Hebeleinheiten mit den Pleuelgliedern (4,5;4A,4B;5A,5B) der Pleuelanordnung gelenkig verbunden bzw. am Maschinenrahmen (1) gelenkig abgestützt ist, und dass die Stösselanordnung vier zueinander parallel verlaufende Stössel (14,15, 16,17) aufweist, von denen jeweils einer bei einem Ende bei der jeweiligen weiteren Anlenkstelle an einer jeweiligen Hebeleinheit (6,6A;7,7A;8,8A;9,9A) und beim anderen Ende am Werkzeugträger (3) angelenkt ist, derart, dass der Werkzeugträger (3) der Einwellen-Stanzpresse an vier Stösseln (14,15,16,17) aufgehängt ist.1. Single-shaft punch press, with - a machine frame (1), - an eccentric shaft (2) which is rotatably mounted in the machine frame (1), - A tool carrier (3), which is guided in the machine frame (1) so that it can be moved back and forth in a straight line, a connecting rod arrangement with connecting rod members (4,5; 4A, 4B; 5A, 5B) which are drive-connected to the eccentric shaft (2), - a lever device with lever units (6.6A; 7.7A; 8.8A; 9.9A), each lever unit (6.6A; 7, 7A; 8.8A; 9.9A) at a first point with connecting rods ( 4,5; 4A, 4B; 5A, 5B) of the connecting rod arrangement is articulated and articulated at a second location on the machine frame (1) and each has a further articulation point (10, 11, 12, 13) distant from these two locations , a ram arrangement with rams (14, 15, 16, 17) which are articulated at one end to the respective further articulation points (10, 11, 12, 13) and at the other end to the tool carrier (3),
characterized in that the lever device has four individual, separate lever units (6.6A; 7.7A; 8.8A; 9.9A) and each lever unit individually and independently of the other lever units with the connecting rod members (4.5; 4A, 4B; 5A, 5B) of the connecting rod arrangement is connected in an articulated manner or is supported in an articulated manner on the machine frame (1), and that the plunger arrangement has four plungers (14, 15, 16, 17) running parallel to one another, one of which has one end at the each further articulation point is articulated to a respective lever unit (6.6A; 7.7A; 8.8A; 9.9A) and at the other end to the tool carrier (3) such that the tool carrier (3) of the single-shaft punch press is connected to four Pestles (14,15,16,17) is suspended. 2. Einwellen-Stanzpresse nach Anspruch 1, dadurch gekennzeichnet, - dass die Exzenterwelle (2) einen mittleren Exzenterabschnitt (18) und beidseitig desselben je einen weiteren Exzenterabschnitt (19,20) aufweist, - dass eine Einrichtung (24-32) zum Ausgleichen vom im Betrieb der Stanzpresse auftretenden Massenkräften vorhanden ist, welche Einrichtung mit dem mittleren Exzenterabschnitt (18) antriebsverbunden ist, - dass die Pleuelglieder (4,5;4A,4B,5A,5B) der Pleuelanordnung auf jeweils einem der weiteren Exzenterabschnitte (19,20) gelagert sind, - dass die Hebeleinheiten (6,6A;7,7A,8,8A,9, 9A) der Hebeleinrichtung einarmige Hebelpaare (6,6A;7,7A und 8,8A;9,9A) mit jeweils einem ersten (35) und einem zweiten, entgegengesetzten Ende (36) bilden, wobei die Hebelabschnitte (6,6A;7, 7A und 8,8A;9,9A) beim ersten Ende (35) über einen gemeinsamen Bolzen (21) an einem jeweiligen Pleuelglied (4,5;4A,4B;5A, 5B) und beim zweiten Ende (36) am Maschinenrahmen (1) angelenkt sind und die weitere Anlenkstelle (10,11,12,13) jeweils zwischen den beiden Enden (35;36) angeordnet ist, - dass die Stössel (14,15,16,17) bei einem Ende an der jeweiligen weiteren Anlenkstelle (10,11,12, 13) der einarmigen Hebelpaaren (6,6A;7,7A und 8,8A;9,9A) und beim anderen Ende am Werkzeugträger (3) angelenkt sind, derart, dass jedes Pleuelglied (4,5;4A,4B;5A,5B) gleichzeitig an zwei einarmigen Hebelpaaren (6,6A; 7,7A und 8,8A;9,9A) angelenkt ist, von denen jeder seinerseits mit einem der Stössel (14,15,16,17) verbunden ist. 2. Single-shaft punch press according to claim 1, characterized in - That the eccentric shaft (2) has a central eccentric section (18) and on both sides thereof a further eccentric section (19, 20), - That there is a device (24-32) for compensating the mass forces occurring during the operation of the punch press, which device is drive-connected to the central eccentric section (18), - that the connecting rod members (4, 5; 4A, 4B, 5A, 5B) of the connecting rod arrangement are each mounted on one of the further eccentric sections (19, 20), - That the lever units (6,6A; 7,7A, 8,8A, 9, 9A) of the lever device single-arm pairs of levers (6,6A; 7,7A and 8,8A; 9,9A) with a first (35) and form a second, opposite end (36), the lever sections (6,6A; 7, 7A and 8,8A; 9,9A) at the first end (35) via a common bolt (21) on a respective connecting rod member (4, 5; 4A, 4B; 5A, 5B) and at the second end (36) on the machine frame (1) and the further articulation point (10, 11, 12, 13) is arranged between the two ends (35; 36), - That the plunger (14, 15, 16, 17) at one end at the respective further articulation point (10, 11, 12, 13) of the one-armed lever pairs (6.6 A; 7.7 A and 8.8 A; 9.9 A) and are articulated at the other end to the tool carrier (3), such that each connecting rod (4,5; 4A, 4B; 5A, 5B) is simultaneously connected to two pairs of one-armed levers (6.6A; 7.7A and 8.8A; 9, 9A) is articulated, each of which in turn is connected to one of the plungers (14, 15, 16, 17). 3. Stanzpresse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jeweils zwei der einarmigen Hebelpaare (6,6A und 8,8A bzw. 7,7A und 9,9A) nebeneinander angeordnet sind und die weiteren Anlenkstellen (10,11,12,13) derselben von dem gemeinsamen Bolzen (21) denselben Abstand aufweisen, derart, dass die Stössel (14,15,16,17) die Ecken eines rechtwinkligen Vierecks bestimmen.3. Punching press according to claim 1 or 2, characterized in that two of the one-armed lever pairs (6.6A and 8.8A or 7.7A and 9.9A) are arranged next to one another and the further articulation points (10, 11, 12, 13) have the same distance from the common bolt (21) such that the plungers (14, 15, 16, 17) determine the corners of a right-angled square. 4. Stanzpresse nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass jedes Pleuelglied (4,5) einen Kopf in Form einer dreifach gezinkten Gabel aufweist, dass jede Hebeleinheit (6,6A; 7,7A; 8,8A; 9,9A) aus zwei nebeneinander angeordneten Hebelabschnitten (6;6A;7;7A;8;8A;9;9A) mit jeweils ersten und zweiten Enden besteht, wobei die ersten Enden der jeweiligen Hebelabschnitte (6;6A;7;7A;8;8A;9;9A) in den jeweiligen Zwischenraum zwischen den durch die Zinken gebildeten Wangen auf dem gemeinsamen Bolzen (21) gelagert sind.4. Punching press according to one of the preceding claims, characterized in that each connecting rod member (4,5) has a head in the form of a triple-pronged fork, that each lever unit (6.6A; 7.7A; 8.8A; 9.9A) consists of two juxtaposed lever sections (6; 6A; 7; 7A; 8; 8A; 9; 9A) each with first and second ends, the first ends of the respective lever sections (6; 6A; 7; 7A; 8; 8A; 9; 9A) are mounted in the respective space between the cheeks formed by the tines on the common bolt (21). 5. Stanzpresse nach den Ansprüchen 1-3, dadurch gekennzeichnet, dass jedes Pleuelglied zwei nebeneinander angeordnete Pleuel (4A,4B;5A,5B) mit jeweils einem gegabelten Kopf aufweist, dass jede Hebeleinheit (6,6A; 7,7A; 8,8A; 9,9A) aus zwei nebeneinander angeordneten Hebelabschnitten (6;6A;7;7A;8;8A;9;9A) mit jeweils ersten und zweiten Enden besteht, wobei die ersten Enden der jeweiligen Hebelabschnitte (6;6A;7;7A;8;8A;9;9A) in den durch die Zinken der Gabeln gebildeten Wangen auf dem gemeinsamen Bolzen (21) gelagert sind, derart, dass die Pleuelanordnung vier Pleuel enthält.5. Punching press according to claims 1-3, characterized in that each connecting rod member has two connecting rods (4A, 4B; 5A, 5B) arranged next to one another, each with a forked head, that each lever unit (6,6A; 7,7A; 8, 8A; 9,9A) consists of two lever sections (6; 6A; 7; 7A; 8; 8A; 9; 9A) arranged next to each other, each with first and second ends, the first ends of the respective lever sections (6; 6A; 7; 7A; 8; 8A; 9; 9A) are mounted in the cheeks formed by the prongs of the forks on the common bolt (21) such that the connecting rod arrangement contains four connecting rods.
EP92116064A 1991-12-11 1992-09-19 Single shaft punch press Expired - Lifetime EP0546265B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3649/91A CH684394A5 (en) 1991-12-11 1991-12-11 Single shaft punch press.
CH3649/91 1991-12-11

Publications (2)

Publication Number Publication Date
EP0546265A1 true EP0546265A1 (en) 1993-06-16
EP0546265B1 EP0546265B1 (en) 1995-05-31

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EP92116064A Expired - Lifetime EP0546265B1 (en) 1991-12-11 1992-09-19 Single shaft punch press

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US (1) US5317893A (en)
EP (1) EP0546265B1 (en)
JP (1) JP3327594B2 (en)
CH (1) CH684394A5 (en)
DE (1) DE59202404D1 (en)

Cited By (4)

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EP0648596A1 (en) * 1993-10-14 1995-04-19 L. SCHULER GmbH Press, in particular high-speed cutting press
EP0724953A1 (en) * 1995-01-21 1996-08-07 Bruderer Ag Punch press with extended space for mounting dies
US8739595B2 (en) 2007-06-28 2014-06-03 Bruderer Ag Punching press
DE102010036184B4 (en) * 2009-12-10 2016-11-03 Kabushiki Kaisha Yamada Dobby Press

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EP0628403B1 (en) * 1993-06-04 1996-07-17 Bruderer Ag Single shaft eccentric punch press with slide connected at four points
US5605096A (en) * 1993-08-25 1997-02-25 Sankyo Seisakusho Mechanical pressing machine with dynamic balancing device
JPH10128597A (en) * 1996-10-28 1998-05-19 Aida Eng Ltd Slide drive device for press using link
US6012322A (en) * 1998-03-27 2000-01-11 Aida Engineering Co., Ltd. Slide-driving device for knuckle presses
JP4404984B2 (en) * 1999-03-24 2010-01-27 株式会社山田ドビー Press machine
JP2003080397A (en) * 2001-09-11 2003-03-18 Yamada Dobby Co Ltd Press
EP1600223A1 (en) * 2004-05-27 2005-11-30 Trumpf Werkzeugmaschinen GmbH + Co. KG Punching machine with motor driven rotating- /lifting mechanism
ATE373561T1 (en) * 2004-11-17 2007-10-15 Bruderer Ag MULTI STAGE PRESS
TW201302446A (en) * 2011-07-08 2013-01-16 Metal Ind Res & Dev Ct Linkage type punch
CN109013918B (en) * 2018-10-10 2024-07-12 昆山嘉华精密工业有限公司 Sliding block mechanism of continuous stamping die system

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US2364661A (en) * 1942-11-21 1944-12-12 Bliss E W Co Toggle press
FR2283776A1 (en) * 1974-09-03 1976-04-02 Bruderer Ag CONTROL MECHANISM FOR THE ACTIVE MOBILE PART, FOR EXAMPLE THE DROPPING MASS OF A PRESS, PUNCHING MACHINE OR SIMILAR
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Cited By (5)

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Publication number Priority date Publication date Assignee Title
EP0648596A1 (en) * 1993-10-14 1995-04-19 L. SCHULER GmbH Press, in particular high-speed cutting press
EP0724953A1 (en) * 1995-01-21 1996-08-07 Bruderer Ag Punch press with extended space for mounting dies
US5746123A (en) * 1995-01-21 1998-05-05 Bruderer Ag Punch press having an elongate space for mounting its tools
US8739595B2 (en) 2007-06-28 2014-06-03 Bruderer Ag Punching press
DE102010036184B4 (en) * 2009-12-10 2016-11-03 Kabushiki Kaisha Yamada Dobby Press

Also Published As

Publication number Publication date
CH684394A5 (en) 1994-09-15
JP3327594B2 (en) 2002-09-24
JPH05212589A (en) 1993-08-24
EP0546265B1 (en) 1995-05-31
US5317893A (en) 1994-06-07
DE59202404D1 (en) 1995-07-06

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