EP0266625B1 - Upper tool holder for a punch or the like - Google Patents

Upper tool holder for a punch or the like Download PDF

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Publication number
EP0266625B1
EP0266625B1 EP87115368A EP87115368A EP0266625B1 EP 0266625 B1 EP0266625 B1 EP 0266625B1 EP 87115368 A EP87115368 A EP 87115368A EP 87115368 A EP87115368 A EP 87115368A EP 0266625 B1 EP0266625 B1 EP 0266625B1
Authority
EP
European Patent Office
Prior art keywords
tool
punching
punch
force
lifting lever
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.)
Expired - Lifetime
Application number
EP87115368A
Other languages
German (de)
French (fr)
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EP0266625A3 (en
EP0266625A2 (en
Inventor
Karl-Heinz Schulte
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.)
Muhr und Bender KG
Original Assignee
Muhr und Bender KG
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 Muhr und Bender KG filed Critical Muhr und Bender KG
Priority to AT87115368T priority Critical patent/ATE72526T1/en
Publication of EP0266625A2 publication Critical patent/EP0266625A2/en
Publication of EP0266625A3 publication Critical patent/EP0266625A3/en
Application granted granted Critical
Publication of EP0266625B1 publication Critical patent/EP0266625B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/04—Movable or exchangeable mountings for tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders

Definitions

  • the invention relates to an upper tool carrier for a punch or the like. According to the preamble of claim 1.
  • a quick change of a punching tool and / or all of the punching tools is possible in that a mounting plate It is part of the carrier body and the tool guides are open towards the end face of the carrier body, so that the upper ends of the punching tools can be inserted or inserted essentially horizontally into the tool guides.
  • a sealing cap closes all tool guides at the open ends together.
  • the ends of the punching tools are provided with hammer-head-like extensions and the mounting plate and the closure cap are provided with support flanges corresponding to the hammer-head-like extensions, so that the punching tools cannot slide down out of the tool guides.
  • the closure cap is pivotally articulated on the carrier body or on the receiving plate via a pivot axis and by means of a locking device, which is arranged on the opposite transverse side, with the carrier body or the receiving plate lockable.
  • the locking device consists of a locking bolt pivotally articulated on the mounting plate in the horizontal plane and a locking receptacle provided on the locking cap, which is open on one side, wherein the locking bolt can be pivoted into the locking receptacle and clamped by means of a clamping nut.
  • receiving spaces for the upper ends of the punching tools are provided on the carrier body above the tool guides and below a force transmission surface, and these receiving spaces can be bridged by means of force transmission slides which can be displaced essentially perpendicular to the punching direction.
  • Each punch is assigned a lifting lever arranged on the carrier body, one end of which laterally grips the upper end of the associated punch from below, so that the upper end of the punch can be lifted into the receiving space by means of the lifting lever when the power transmission slide is retracted.
  • pneumatic drives or the like which are not to be explained in detail are provided.
  • the punching tool is lifted into the receiving space when the power transmission slide is pulled back, by positive control of the lifting lever.
  • the lifting lever is designed as a two-armed lever and is pivotably articulated on the carrier body via a pivot axis below the power transmission slide.
  • the arm of the lifting lever pointing away from the receiving space is provided with a lifting control surface which interacts with the side of the power transmission slide facing away from the receiving space. If the power transmission slide is withdrawn from the receiving space, the side of the power transmission slide facing away from the receiving space slides on the lifting control surface of the lifting lever and presses this arm of the lifting lever downward.
  • the other, opposite arm of the lifting lever is raised accordingly and with it the upper end of the punch and thus the punch as a whole is lifted.
  • the side of the power transmission slide facing away from the receiving space ultimately passes over the arm of the lifting lever, the end position of the upper end of the punch being defined in the receiving space by the underside of the power transfer slide.
  • the rear arm of the lifting lever is released again. Under the dead weight of the punching tool, it sinks down from the receiving space and takes the upper end of the arm of the lifting lever that comes into contact with it down.
  • the invention is based on the object of designing and developing the known upper tool carrier in such a way that jams between the punching tool and the power transmission slide are systematically avoided.
  • the upper tool carrier according to the invention in which the above-mentioned object is achieved, is described by the features contained in the characterizing part of claim 1.
  • the punching tool when the power transmission slide is advanced, the punching tool is not only passive, under the action of its own gravity, but can also be actively lowered with the aid of the lifting lever, in the sense of positive control.
  • the basic principle of positive control for lifting the punch by means of the lifting lever can also be used for lowering the punch. For the rest, there are of course various design options for such positive control.
  • FIG. 1 shows, as a special, preferred exemplary embodiment of the invention, a machine tool in the form of a punch with a C-shaped machine body 1, only indicated, a lower tool carrier 2 formed or arranged on the machine body 1 with a lower tool 3 and one on the machine body 1
  • Upper tool carrier 4 arranged or executed above with an upper tool, here a punching tool 5. It is only indicated that on the upper tool carrier 4 or on the machine body 1 above the upper tool carrier 4 a drive head 6, for example in the form of a hydraulic cylinder piston Arrangement, sits, with the help of which the punch 5 can be lowered to the lower tool 3 during operation.
  • each punch 5 consists of a punch 7, a punch holder 8 and one Punching die 7 with union nut 9 connecting the punch holder 8.
  • the three punching tools 5, as shown in FIG. 2, are arranged as close as possible to one another.
  • Fig. 1 shows that the upper tool carrier 4 in the embodiment shown here initially has a carrier body 10 and a receiving plate 11. 3 makes it clear that tool guides 12 which are arranged next to one another and extend in the punching direction are provided for each punch 5 in the receiving plate 11. 1, 2 and 3 make it clear in connection with this that the upper tool carrier 4 has a closure cap 14 fastened to the carrier body 10, in particular and in the exemplary embodiment shown here pivotable about a pivot axis 13 on the carrier body 10. 1 and 2 finally show in connection that the upper ends of the punch 5 in the tool guides 12, limited in one direction by support flanges 15, are guided in the punching direction, here vertically.
  • the support flanges 15 can be clearly seen in FIG. 3. They serve to prevent the punching tools 5 from falling out of the tool guides 12 downwards.
  • receiving spaces 17 for the upper ends of the punching tools 5 are provided on the carrier body 10 above the tool guides 12 and below a force transmission surface 16.
  • the receiving spaces 17 are by means of power transmission slides which can be displaced essentially perpendicular to the punching direction 18 or the like. Can be bridged with the aid of actuators 19 designed here as pneumatic cylinder-piston units.
  • the force transmission surface 16 is arranged on the underside of the drive head 6. This technique ensures that only the punch 5 is actively moved downward during the downward stroke of the power transmission surface 16, the power transmission slide 18 bridging the associated receiving space 17, while the other two punching tools 5 can move back into the respectively assigned receiving space 17.
  • the lifting lever 20 is designed as a two-armed lever which extends around a pivot axis 21 on the carrier body 10 in a vertical direction, the punching direction enclosing plane is pivotable.
  • An arm 22 has a stroke control surface 23 which interacts with the side 24 of the power transmission slide 18 facing away from the receiving space 17. It is like the state of the art. When the power transmission slide 18 is withdrawn from the receiving space 17, the side 24 facing away presses the arm 22 downward via the stroke control surface 23 and finally runs over it (FIG. 5). As a result, the second arm 25 of the lifting lever 20 is raised and thus actively lifts the upper end of the punch 5 into the receiving space 17.
  • the punching tool 5 is shown here in dashed lines in FIG. 5.
  • a forced control is also implemented here for lowering the punch 5, namely by means of the lifting lever 20, the upper one
  • the end of the punch 5 can be actively lowered when the power transmission slide 18 is advanced from the receiving space 17. Every collision of the punch 5 with the power transmission slide 18 is thus systematically avoided.
  • the result explained above is achieved constructively in that the lifting lever 20 has a lowering control surface 27 which interacts with the side 26 of the power transmission slide 18 facing the receiving space 17 and the side 26 of the power transmission slide 18 facing the receiving space 17 on the Lowering control surface 27 of the lifting lever 20 comes to rest before the side 26 comes into contact with the upper end of the punching tool 5.
  • the structural design, in particular the inclination of the side 26 and the lowering control surface 27, is selected such that the lowering control surface 27 is run over by the side 26 of the power transmission slide 18 facing the receiving space 17 when the power transmission slide 18 is advanced.
  • the underside of the power transmission slide 18 thus also defines the lowering position of the punch 7.
  • the lowering control surface 27 requires a specific position relative to the side 26 of the power transmission slide 18.
  • the upper end of the punching tool 5 includes an end the lowering control surface 27 carrying control projection 28 projecting into the feed path of the power transmission slide 18 is formed.
  • the lifting lever 20 has a control head 29 and which encloses the upper end of the punching tool 5 on the punch 5 below the upper end has a pressure control surface 30 and that the control head 29 comes to bear on the pressure control surface 30 in a force-transmitting manner.
  • the punch 5 has a recess 31 which is open laterally below the upper end and in which a stroke control surface 32 and the pressure control surface 30 for the control head 29 are formed. Otherwise, as can be clearly seen here, the control head 29 is rounded off to reduce wear. Finally, it can be clearly seen that the recess 31 has an inlet channel 33 for the control projection 28 on the lifting lever 20. This is necessary in the exemplary embodiment shown here because the plate forming the upper end of the punch 5 is relatively thick and therefore the control projection 28 cannot pivot into the recess 31 below this plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Jigs For Machine Tools (AREA)
  • Passenger Equipment (AREA)

Abstract

An upper tool support (4) for a stamping machine or the like has at least two stamping tools (5) adjacently located. Each stamping tool (5) preferably includes a punch (7), a punch support (8) and a retaining nut (9) connecting the punch (7) with the punch support (8). The upper tool support (4) is provided with a support body (10), a receiving plate (11) with tool guides (12) for each stamping tool (5) disposed next to each other in the receiving plate (11), a locking cap (14). The locking cap (14) is connected to the support body (10) to be pivotable around a pivot axle (13), to be thus removable in a plane perpendicular to the direction of stamping. The upper ends of the stamping tools (5) are movably guided in the direction of stamping and limited in one direction by support flanges (15). The guidance of the stamping tools (5) is not influenced by the fastening of the locking cap (14) on the support body (10), because the locking cap (14) carries the receiving plate (11). The tool guides (12) are annularly closed in the plane perpendicular to the direction of stamping. The stamping tools (5) can be inserted into the tool guides (10) in the direction of stamping, that is, can be removed from the tool guides in the opposite, upward direction perpendicular to the receiving plate (11) when the locking cap (14) is pivoted away from the support body (10).

Description

Die Erfindung betrifft einen oberen Werkzeugträger für eine Stanze od. dgl. nach dem Oberbegriff von Anspruch 1.The invention relates to an upper tool carrier for a punch or the like. According to the preamble of claim 1.

Grundsätzlich gelten die nachfolgenden Erläuterungen nicht nur für obere Werkzeugträger von als Stanzen ausgeführten Werkzeugmaschinen, sondern beispielsweise auch dann, wenn im oberen Werkzeugträger ein Klinkwerkzeug angeordnet ist. Die Lehre der Erfindung ist also nicht nur auf eine Stanze und Stanzwerkzeuge beschränkt, sondern auf alle Werkzeugmaschinen anwendbar, bei denen vergleichbare Probleme auftreten. Die Lehre der Erfindung wird hier und nachfolgend an dem bevorzugten Ausführungsbeispiel eines oberen Werkzeugträgers für eine Stanze erläutert, um das Verständnis der Lehre zu erleichtern.In principle, the following explanations apply not only to upper tool carriers of machine tools designed as punching dies, but also, for example, when a latching tool is arranged in the upper tool carrier. The teaching of the invention is therefore not only limited to a punch and punching tools, but can also be applied to all machine tools in which comparable problems occur. The teaching of the invention is explained here and below using the preferred exemplary embodiment of an upper tool carrier for a punch in order to facilitate understanding of the teaching.

Bei dem bekannten oberen Werkzeugträger, von dem die Erfindung ausgeht (EP-A-O 180 146 bzw. offenkundige Vorbenutzung), ist unter Berücksichtigung der beengten Platzverhältnisse bei mehreren nebeneinander angeordenten Stanzwerkzeugen ein schneller Wechsel eines Stanzwerkzeugs und/oder aller Stanzwerkzeuge dadurch möglich, daß eine Aufnahmeplatte Teil des Trägerkörpers ist und die Werkzeugführungen zur Stirnseite des Trägerkörpers hin offen sind, so daß die oberen Enden der Stanzwerkzeuge im wesentlichen horizontal in die Werkzeugführungen einschiebbar bzw. einsetzbar sind. Eine Verschlußkappe verschließt alle Werkzeugführungen an den offenen Enden gemeinsam. Durch Ansetzen der Verschlußkappe und Verriegeln der Verschlußkappe mit der Aufnahmeplatte werden mit einem Griff die offenen Enden aller Werkzeugführungen in der Aufnahmeplatte verschlossen. Damit sind alle Stanzwerkzeuge gesichert. Im einzelnen sind dazu die Enden der Stanzwerkzeuge mit hammerkopfartigen Erweiterungen versehen und sind die Aufnahmeplatte und die Verschlußkappe mit zu den hammerkopfartigen Erweiterungen korrespondierenden Auflageflanschen versehen, so daß die Stanzwerkzeuge nicht nach unten aus den Werkzeugführungen herausrutschen können. Die Verschlußkappe ist am Trägerkörper bzw. an der Aufnahmeplatte über eine Anlenkachse schwenkbar angelenkt und mittels einer Verriegelunsvorrichtung, die auf der gegenüberliegenden Querseite angeordnet ist, mit dem Trägerkörper bzw. der Aufnahmeplatte verriegelbar. Die Verriegelungsvorrichtung besteht dabei aus einem an der Aufnahmeplatte in horizontaler Ebene schwenkbar angelenkten Riegelbolzen und einer an der Verschlußkappe vorgesehenen, einseitig offenen Riegelaufnahme, wobei zur Verriegelung der Riegelbolzen in die Riegelaufnahme einschwenkbar und mittels einer Spannmutter festspannbar ist. Im übrigen sind am Trägerkörper oberhalb der Werkzeugführungen und unterhalb einer Kraftübertragungsfläche Aufnahmeräume für die oberen Enden der Stanzwerkzeuge vorgesehen und diese Aufnahmeräume sind mit Hilfe von im wesentlichen senkrecht zur Stanzrichtung verschiebbaren Kraftübertragungsschiebern überbrückbar. Jedem Stanzwerkzeug ist ein am Trägerkörper angeordneter Hubhebel zugeordnet, dessen eines Ende das obere Ende des zugeordneten Stanzwerkzeugs seitlich von unten her unterfaßt, so daß das obere Ende des Stanzwerkzeugs bei zurückgezogenem Kraftübertragungsschieber mittels des Hubhebels in den Aufnahmeraum anhebbar ist. Dazu sind im einzelnen nicht näher zu erläuternde Pneumatikantriebe od. dgl. vorgesehen.In the known upper tool carrier from which the invention is based (EP-AO 180 146 or prior prior use), taking into account the limited space in the case of a plurality of punching tools arranged next to one another, a quick change of a punching tool and / or all of the punching tools is possible in that a mounting plate It is part of the carrier body and the tool guides are open towards the end face of the carrier body, so that the upper ends of the punching tools can be inserted or inserted essentially horizontally into the tool guides. A sealing cap closes all tool guides at the open ends together. By attaching the closure cap and locking the closure cap with the mounting plate, the open ends of all tool guides in the mounting plate are closed with one handle. All punching tools are now secured. In particular, the ends of the punching tools are provided with hammer-head-like extensions and the mounting plate and the closure cap are provided with support flanges corresponding to the hammer-head-like extensions, so that the punching tools cannot slide down out of the tool guides. The closure cap is pivotally articulated on the carrier body or on the receiving plate via a pivot axis and by means of a locking device, which is arranged on the opposite transverse side, with the carrier body or the receiving plate lockable. The locking device consists of a locking bolt pivotally articulated on the mounting plate in the horizontal plane and a locking receptacle provided on the locking cap, which is open on one side, wherein the locking bolt can be pivoted into the locking receptacle and clamped by means of a clamping nut. Incidentally, receiving spaces for the upper ends of the punching tools are provided on the carrier body above the tool guides and below a force transmission surface, and these receiving spaces can be bridged by means of force transmission slides which can be displaced essentially perpendicular to the punching direction. Each punch is assigned a lifting lever arranged on the carrier body, one end of which laterally grips the upper end of the associated punch from below, so that the upper end of the punch can be lifted into the receiving space by means of the lifting lever when the power transmission slide is retracted. For this purpose, pneumatic drives or the like which are not to be explained in detail are provided.

Das Anheben des Stanzwerkzeugs in den Aufnahmeraum beim Zurückziehen des Kraftübertragungsschiebers erfolgt im Stand der Technik, der durch offenkundige Vorbenutzung bekannt ist und von dem die Erfindung ausgeht, durch eine Zwangssteuerung des Hubhebels. Dazu ist hier der Hubhebel als zweiarmiger Hebel ausgeführt und über eine Schwenkachse unterhalb des Kraftübertragungsschiebers am Trägerkörper schwenkbar angelenkt. Der vom Aufnahmeraum wegweisende Arm des Hubhebels ist mit einer Hubsteuerfläche versehen, die mit der vom Aufnahmeraum abgewandten Seite des Kraftübertragungsschiebers wechselwirkt. Wird der Kraftübertragungsschieber aus dem Aufnahmeraum zurückgezogen, so gleitet die vom Aufnahmeraum abgewandte Seite des Kraftübertragungsschiebers auf der Hubsteuerfläche des Hubhebels und drückt diesen Arm des Hubhebels dabei nach unten. Der andere, gegenüberliegende Arm des Hubhebels wird dadurch entsprechend angehoben und mit ihm wird auch das obere Ende des Stanzwerkzeugs und damit das Stanzwerkzeug insgesamt angehoben. Die vom Aufnahmeraum abgewandte Seite des Kraftübertragungsschiebers überfährt letztlich den Arm des Hubhebels, wobei durch die Unterseite des Kraftübertragungsschiebers dann die Endposition des oberen Endes des Stanzstempels im Aufnahmeraum definiert ist.In the prior art, which is known from public prior use and from which the invention is based, the punching tool is lifted into the receiving space when the power transmission slide is pulled back, by positive control of the lifting lever. For this purpose, the lifting lever is designed as a two-armed lever and is pivotably articulated on the carrier body via a pivot axis below the power transmission slide. The arm of the lifting lever pointing away from the receiving space is provided with a lifting control surface which interacts with the side of the power transmission slide facing away from the receiving space. If the power transmission slide is withdrawn from the receiving space, the side of the power transmission slide facing away from the receiving space slides on the lifting control surface of the lifting lever and presses this arm of the lifting lever downward. The other, opposite arm of the lifting lever is raised accordingly and with it the upper end of the punch and thus the punch as a whole is lifted. The side of the power transmission slide facing away from the receiving space ultimately passes over the arm of the lifting lever, the end position of the upper end of the punch being defined in the receiving space by the underside of the power transfer slide.

Wird der Kraftübertragungsschieber wieder in Richtung auf den Aufnahmeraum vorgeschoben, so wird der rückwärtige Arm des Hubhebels wieder freigegeben. Unter dem Eigengewicht des Stanzwerkzeugs sinkt dieses aus dem Aufnahmeraum nach unten und nimmt dabei mit seinem oberen Ende den hier zur Anlage kommenden Arm des Hubhebels mit nach unten.If the power transmission slide is pushed again towards the receiving space, the rear arm of the lifting lever is released again. Under the dead weight of the punching tool, it sinks down from the receiving space and takes the upper end of the arm of the lifting lever that comes into contact with it down.

Es hat sich gezeigt, daß in der Praxis das Absenken des Stanzwerkzeugs allein durch sein eigenes Gewicht nicht zuverlässig genug ist. Mitunter geschieht es, daß das Stanzwerkzeug in der Werkzeugführung so weit oben hängenbleibt, daß das obere Ende im Aufnahmeraum verbleibt. Der vom Stellantrieb vorgeschobene Kraftübertragungsschieber trifft seitlich auf das obere Ende des Stanzwerkzeugs und verklemmt sich völlig mit diesem.It has been shown that in practice the lowering of the punch by its own weight is not reliable enough. Occasionally it happens that the punch in the tool guide remains so high that the upper end remains in the receiving space. The power transmission slide pushed forward by the actuator hits the upper end of the punching tool and is completely jammed with it.

Der Erfindung liegt nun die Aufgabe zugrunde, den bekannten oberen Werkzeugträger so auszugestalten und weiterzubilden, daß Verklemmungen zwischen dem Stanzwerkzeug und dem Kraftübertragungsschieber systematisch vermieden werden.The invention is based on the object of designing and developing the known upper tool carrier in such a way that jams between the punching tool and the power transmission slide are systematically avoided.

Der erfindungsgemäße obere Werkzeugträger, bei dem die zuvor aufgezeigte Aufgabe gelöst ist, ist durch die im kennzeichnenden Teil des Anspruchs 1 enthaltenen Merkmale beschrieben. Erfindungsgemäß ist das Stanzwerkzeug beim Vorschieben des Kraftübertragungsschiebers nicht nur passiv, unter der Wirkung seiner eigenen Schwerkraft, sondern aktiv mit Hilfe des Hubhebels absenkbar, im Sinne einer Zwangssteuerung. Das Grundprinzip der Zwangssteuerung für das Anheben des Stanzwerkzeugs mittels des Hubhebels kann auch für das Absenken des Stanzwerkzeugs verwendet werden. Im übrigen gibt es natürlich für eine solche Zwangssteuerung verschiedene Ausgestaltungsmöglichkeiten.The upper tool carrier according to the invention, in which the above-mentioned object is achieved, is described by the features contained in the characterizing part of claim 1. According to the invention, when the power transmission slide is advanced, the punching tool is not only passive, under the action of its own gravity, but can also be actively lowered with the aid of the lifting lever, in the sense of positive control. The basic principle of positive control for lifting the punch by means of the lifting lever can also be used for lowering the punch. For the rest, there are of course various design options for such positive control.

Im einzelnen gibt es eine Vielzahl von Möglichkeiten, den erfindungsgemäßen oberen Werkzeugträger für eine Stanze od. dgl. auszugestalten und weiterzubilden. Dazu wird einerseits auf die dem Anspruch 1 nachgeordneten Ansprüche, andererseits auf die nachfolgende Erläuterung eines bevorzugten Ausführungsbeispiels der Erfindung anhand der Zeichnung verwiesen. In der Zeichnung zeigt

Fig. 1
in schematischer Darstellung in einer Seitenansicht eine Werkzeugmaschine, hier eine Lochstanze,
Fig. 2
den Gegenstand aus Fig. 1 in einer Vorderansicht,
Fig. 3
den Gegenstand aus Fig. 1 in einer Draufsicht,
Fig. 4
den Gegenstand aus Fig. 1 in einer Draufsicht bei abgenommenem Antriebskopf und
Fig. 5
einen Schnitt durch den Gegenstand aus Fig. 4 entlang der Linie V - V.
In particular, there are a multitude of possibilities for designing and developing the upper tool carrier according to the invention for a punch or the like. For this purpose, on the one hand to the claims subordinate to claim 1, and on the other hand to the following explanation of a preferred embodiment the invention with reference to the drawing. In the drawing shows
Fig. 1
a schematic representation in a side view of a machine tool, here a punch,
Fig. 2
1 in a front view,
Fig. 3
1 in a plan view,
Fig. 4
1 in a plan view with the drive head removed and
Fig. 5
a section through the object of Fig. 4 along the line V - V.

Fig. 1 zeigt als ein besonderes, bevorzugtes Ausführungsbeispiel der Erfindung eine Werkzeugmaschine in Form einer Lochstanze mit einem, lediglich angedeuteten, C-förmigen Maschinenkörper 1, einem am Maschinenkörper 1 ausgebildeten bzw. angeordneten unteren Werkzeugträger 2 mit einem Unterwerkzeug 3 und einem am Maschinenkörper 1 oben angeordneten bzw. ausgeführten oberen Werkzeugträger 4 mit einem Oberwerkzeug, hier einem Stanzwerkzeug 5. Nur angedeutet ist, daß auf dem oberen Werkzeugträger 4 bzw. auf dem Maschinenkörper 1 oberhalb des oberen Werkzeugträgers 4 ein Antriebskopf 6, beispielsweise in Form einer hydraulischen Zylinder-Kolben-Anordnung, sitzt, mit dessen Hilfe im Betrieb das Stanzwerkzeug 5 auf das Unterwerkzeug 3 zu abgesenkt werden kann.1 shows, as a special, preferred exemplary embodiment of the invention, a machine tool in the form of a punch with a C-shaped machine body 1, only indicated, a lower tool carrier 2 formed or arranged on the machine body 1 with a lower tool 3 and one on the machine body 1 Upper tool carrier 4 arranged or executed above with an upper tool, here a punching tool 5. It is only indicated that on the upper tool carrier 4 or on the machine body 1 above the upper tool carrier 4 a drive head 6, for example in the form of a hydraulic cylinder piston Arrangement, sits, with the help of which the punch 5 can be lowered to the lower tool 3 during operation.

Wie Fig. 1 und Fig. 2 im Zusammenhang zeigen, zeichnet sich der hier dargestellte obere Werkzeugträger 4 dadurch aus, daß mindestens zwei, hier genau gesagt drei nebeneinander angeordnete Stanzwerkzeuge vorgesehen sind. Im hier dargestellten und bevorzugten Ausführungsbeispiel besteht jedes Stanzwerkzeug 5 aus einem Stanzstempel 7, einem Stempelhalter 8 und einer den Stanzstempel 7 mit dem Stempelhalter 8 verbindenden Überwurfmutter 9. Die drei Stanzwerkzeuge 5 sind, wie Fig. 2 zeigt, so nahe wie möglich nebeneinander angeordnet.As shown in FIG. 1 and FIG. 2 in connection, the upper tool carrier 4 shown here is characterized in that at least two, to be precise three punching tools arranged next to one another are provided. In the illustrated and preferred embodiment shown here, each punch 5 consists of a punch 7, a punch holder 8 and one Punching die 7 with union nut 9 connecting the punch holder 8. The three punching tools 5, as shown in FIG. 2, are arranged as close as possible to one another.

Fig. 1 läßt erkennen, daß der obere Werkzeugträger 4 im hier dargestellten Ausführungsbeispiel zunächst einen Trägerkörper 10 sowie eine Aufnahmeplatte 11 aufweist. Fig. 3 macht dabei deutlich, daß in der Aufnahmeplatte 11 nebeneinander angeordnete, sich in Stanzrichtung erstreckende Werkzeugführungen 12 für jedes Stanzwerkzeug 5 vorgesehen sind. Fig. 1, 2 und 3 machen im Zusammenhang weiter deutlich, daß der obere Werkzeugträger 4 eine am Trägerkörper 10 befestigte, insbesondere und im hier dargestellten Ausführungsbeispiel um eine Anlenkachse 13 schwenkbar am Trägerkörper 10 angelenkte Verschlußkappe 14 aufweist. Die Fig. 1 und 2 zeigen im Zusammenhang schließlich, daß die oberen Enden der Stanzwerkzeuge 5 in den Werkzeugführungen 12, in einer Richtung durch Auflageflansche 15 begrenzt, in Stanzrichtung, hier also vertikal, verschiebbar geführt sind. Die Auflageflansche 15 läßt Fig. 3 gut erkennen. Sie dienen dazu, ein Herausfallen der Stanzwerkzeuge 5 aus den Werkzeugführungen 12 nach unten zu verhindern.Fig. 1 shows that the upper tool carrier 4 in the embodiment shown here initially has a carrier body 10 and a receiving plate 11. 3 makes it clear that tool guides 12 which are arranged next to one another and extend in the punching direction are provided for each punch 5 in the receiving plate 11. 1, 2 and 3 make it clear in connection with this that the upper tool carrier 4 has a closure cap 14 fastened to the carrier body 10, in particular and in the exemplary embodiment shown here pivotable about a pivot axis 13 on the carrier body 10. 1 and 2 finally show in connection that the upper ends of the punch 5 in the tool guides 12, limited in one direction by support flanges 15, are guided in the punching direction, here vertically. The support flanges 15 can be clearly seen in FIG. 3. They serve to prevent the punching tools 5 from falling out of the tool guides 12 downwards.

In den Figuren ist nicht dargestellt, daß die oberen Enden der Stanzwerkzeuge 5 mit hammerkopfartigen Erweiterungen versehen sind, die auf den in den Werkzeugführungen 12 vorgesehenen Auflageflanschen 15 aufliegen, so daß ein Durchrutschen der Stanzwerkzeuge 5 nach unten verhindert wird. Dies ist dem Stand der Technik, von dem die Erfindung ausgeht, zu entnehmen. Auch weitere Einzelheiten des hier erläuterten oberen Werkzeugträgers 4 sind aus der EP-A-O 180 146 zu entnehmen, so daß auf diese Vorveröffentlichung verweisen werden darf.The figures do not show that the upper ends of the punching tools 5 are provided with hammer-head-like extensions which rest on the support flanges 15 provided in the tool guides 12, so that the punching tools 5 do not slip downward. This can be gathered from the prior art from which the invention is based. Further details of the upper tool carrier 4 explained here can also be found in EP-A-O 180 146, so that reference may be made to this prior publication.

Wie Fig. 4 der Zeichnung zeigt, sind auch bei dem hier erläuterten oberen Werkzeugträger 4 am Trägerkörper 10 oberhalb der Werkzeugführungen 12 und unterhalb einer Kraftübertragungsfläche 16 Aufnahmeräume 17 für die oberen Enden der Stanzwerkzeuge 5 vorgesehen. Die Aufnahmeräume 17 sind mit Hilfe von im wesentlichen senkrecht zur Stanzrichtung verschiebbaren Kraftübertragungsschiebern 18 od. dgl. überbrückbar, und zwar mit Hilfe von hier als pneumatische Zylinder-Kolben-Einheiten ausgeführten Stellantrieben 19. Die Kraftübertragungsfläche 16 ist dabei an der Unterseite des Antriebskopfs 6 angeordnet. Durch diese Technik wird erreicht, daß beim Abwärtshub der Kraftübertragungsfläche 16 nur dasjenige Stanzwerkzeug 5 aktiv nach unten bewegt wird, dessen Kraftübertragungsschieber 18 den zugehörigen Aufnahmeraum 17 überbrückt, während die beiden anderen Stanzwerkzeuge 5 in den jeweils zugeordneten Aufnahmeraum 17 zurückweichen können.As shown in FIG. 4 of the drawing, in the case of the upper tool carrier 4 explained here, receiving spaces 17 for the upper ends of the punching tools 5 are provided on the carrier body 10 above the tool guides 12 and below a force transmission surface 16. The receiving spaces 17 are by means of power transmission slides which can be displaced essentially perpendicular to the punching direction 18 or the like. Can be bridged with the aid of actuators 19 designed here as pneumatic cylinder-piston units. The force transmission surface 16 is arranged on the underside of the drive head 6. This technique ensures that only the punch 5 is actively moved downward during the downward stroke of the power transmission surface 16, the power transmission slide 18 bridging the associated receiving space 17, while the other two punching tools 5 can move back into the respectively assigned receiving space 17.

Um die nicht aktivierten Stanzwerkzeuge 5 nicht von der Oberseite eines Werkstücks in die Aufnahmeräume 17 zurückführen zu lassen, sondern aktiv in die Aufnahmeräume 17 zurückzuführen, ist es auch bekannt, jedem Stanzwerkzeug 5 einen am Trägerkörper 10 angeordneten Hubhebel 20 zuzuordnen. Der Hubhebel 20 ist in Fig. 4 lediglich für jeden Aufnahmeraum 17 angedeutet. Der Hubhebel 20 kann das obere Ende des zugeordneten Stanzwerkzeugs 5 seitlich von unten her unterfassen, so daß mittels des Hubhebels 20 das obere Ende des Stanzwerkzeugs 5 bei zurückgezogenem Kraftübertragungsschieber 18 in den Aufnahmeraum 17 anhebbar ist.In order not to allow the non-activated punching tools 5 to be guided back into the receiving spaces 17 from the top of a workpiece, but rather to actively return them to the receiving spaces 17, it is also known to assign a lifting lever 20 arranged on the carrier body 10 to each punching tool 5. The lifting lever 20 is only indicated in FIG. 4 for each receiving space 17. The lifting lever 20 can grasp the upper end of the associated punch 5 laterally from below, so that by means of the lifting lever 20 the upper end of the punch 5 can be raised into the receiving space 17 when the power transmission slide 18 is retracted.

Fig. 5 zeigt nun durch die gewählte Schnittdarstellung den Bereich des Hubhebels 20 für ein Stanzwerkzeug 5 etwas genauer. Zunächst ist gut zu erkennen, daß im hier dargestellten und bevorzugten Ausführungsbeispiel, wie auch bei dem durch offenkundige Vorbenutzung bekannt gewordenen Stand der Technik, der Hubhebel 20 als zweiarmiger Hebel ausgeführt ist, der um eine Schwenkachse 21 am Trägerkörper 10 in einer vertikalen, die Stanzrichtung einschließenden Ebene schwenkbar ist. Ein Arm 22 weist eine Hubsteuerfläche 23 auf, die mit der vom Aufnahmeraum 17 abgewandten Seite 24 des Kraftübertragungsschiebers 18 wechselwirkt. DAs ist so wie beim Stand der Technik. Beim Zurückziehen des Kraftübertragungsschiebers 18 aus dem Aufnehmeraum 17 drückt die abgewandte Seite 24 über die Hubsteuerfläche 23 den Arm 22 nach unten und überfährt diesen schließlich (Fig. 5). Dadurch wird der zweite Arm 25 des Hubhebels 20 angehoben und hebt damit aktiv das obere Ende des Stanzwerkzeugs 5 in den Aufnahmeraum 17 hinein an. Das Stanzwerkzeug 5 ist hier in Fig. 5 gestrichelt dargestellt.5 now shows the area of the lifting lever 20 for a punching tool 5 somewhat more precisely through the selected sectional illustration. First of all, it can be clearly seen that, in the exemplary embodiment shown and preferred here, as in the prior art which has become known through public prior use, the lifting lever 20 is designed as a two-armed lever which extends around a pivot axis 21 on the carrier body 10 in a vertical direction, the punching direction enclosing plane is pivotable. An arm 22 has a stroke control surface 23 which interacts with the side 24 of the power transmission slide 18 facing away from the receiving space 17. It is like the state of the art. When the power transmission slide 18 is withdrawn from the receiving space 17, the side 24 facing away presses the arm 22 downward via the stroke control surface 23 and finally runs over it (FIG. 5). As a result, the second arm 25 of the lifting lever 20 is raised and thus actively lifts the upper end of the punch 5 into the receiving space 17. The punching tool 5 is shown here in dashed lines in FIG. 5.

Wesentlich ist nun für die Erfindung, daß zusätzlich zu der für das Anheben des Stanzwerkzeugs 5 im durch offenkundige Vorbenutzung bekannt gewordenen Stand der Technik schon verwirklichten Zwangssteuerung auch für das Absenken des Stanzwerkzeugs 5 hier eine Zwangssteuerung verwirklicht ist, daß nämlich mittels des Hubhebels 20 das obere Ende des Stanzwerkzeugs 5 beim Vorschieben des Kraftübertragungsschiebers 18 aus dem Aufnahmeraum 17 aktiv absenkbar ist. Es wird also jede Kollision des Stanzwerkzeugs 5 mit dem Kraftübertragungsschieber 18 systematisch vermieden.It is essential for the invention that, in addition to the forced control already implemented for the lifting of the punch 5 in the prior art which has become known through prior public use, a forced control is also implemented here for lowering the punch 5, namely by means of the lifting lever 20, the upper one The end of the punch 5 can be actively lowered when the power transmission slide 18 is advanced from the receiving space 17. Every collision of the punch 5 with the power transmission slide 18 is thus systematically avoided.

Im hier dargestellten, bevorzugten Ausführungsbeispiel wird das zuvor erläuterte Ergebnis im einzelnen konstruktiv dadurch erziehlt, daß der Hubhebel 20 eine mit der dem Aufnahmeraum 17 zugewandten Seite 26 des Kraftübertragungsschiebers 18 wechselwirkende Absenksteuerfläche 27 aufweist und die dem Aufnahmeraum 17 zugewandte Seite 26 des Kraftübertragungsschiebers 18 an der Absenksteuerfläche 27 des Hubhebels 20 absenkend zur Anlage kommt, bevor die Seite 26 mit dem oberen Ende des Stanzwerkzeugs 5 in Kontakt kommt. Im hier dargestellten und bevorzugten Ausführungsbeispiel ist die konstruktive Gestaltung, insbesondere die Neigung der Seite 26 und der Absenksteuerfläche 27 so gewählt, daß die Absenksteuerfläche 27 beim Vorschieben des Kraftübertragungsschiebers 18 von der dem Aufnahmeraum 17 zugewandten Seite 26 des Kraftübertragungsschiebers 18 überfahren wird. Die Unterseite des Kraftübertragungsschiebers 18 definiert also so auch die Absenkstellung des Stanzwerkzeugs 7.In the preferred exemplary embodiment shown here, the result explained above is achieved constructively in that the lifting lever 20 has a lowering control surface 27 which interacts with the side 26 of the power transmission slide 18 facing the receiving space 17 and the side 26 of the power transmission slide 18 facing the receiving space 17 on the Lowering control surface 27 of the lifting lever 20 comes to rest before the side 26 comes into contact with the upper end of the punching tool 5. In the preferred embodiment shown and preferred, the structural design, in particular the inclination of the side 26 and the lowering control surface 27, is selected such that the lowering control surface 27 is run over by the side 26 of the power transmission slide 18 facing the receiving space 17 when the power transmission slide 18 is advanced. The underside of the power transmission slide 18 thus also defines the lowering position of the punch 7.

Wie die voranstehenden Erläuterungen deutlich machen, bedarf die Absenksteuerfläche 27 einer bestimmten Relativlage zu der Seite 26 des Kraftübertragungsschiebers 18. Dazu empfiehlt es sich konstruktiv, daß am Hubhebel 20 auf der dem Kraftübertragungsschieber 18 zugewandten Seite 26 des das obere Ende des Stanzwerkzeugs 5 unterfassenden Endes ein die Absenksteuerfläche 27 tragender, in den Vorschubweg des Kraftübertragungsschiebers 18 ragender Steuervorsprung 28 ausgebildet ist.As the above explanations make clear, the lowering control surface 27 requires a specific position relative to the side 26 of the power transmission slide 18. For this purpose, it is structurally advisable that on the lever 26 on the side 26 facing the power transmission slide 18, the upper end of the punching tool 5 includes an end the lowering control surface 27 carrying control projection 28 projecting into the feed path of the power transmission slide 18 is formed.

Weiter empfiehlt es sich, wie in Fig. 5 dargestellt, daß der Hubhebel 20 einen das obere Ende des Stanzwerkzeugs 5 unterfassenden Steuerkopf 29 und am Stanzwerkzeug 5 unterhalb des oberen Endes eine Drucksteuerfläche 30 aufweist und daß der Steuerkopf 29 beim Absenken an der Drucksteuerfläche 30 kraftübertragend zur Anlage kommt.It is further recommended, as shown in FIG. 5, that the lifting lever 20 has a control head 29 and which encloses the upper end of the punching tool 5 on the punch 5 below the upper end has a pressure control surface 30 and that the control head 29 comes to bear on the pressure control surface 30 in a force-transmitting manner.

Im einzelnen hat in dem in Fig. 5 dargestellten, bevorzugten Ausführungsbeispiel der Erfindung das Stanzwerkzeug 5 eine unterhalb des oberen Endes seitlich offene Ausnehmung 31, in der einerseits eine Hubsteuerfläche 32, andererseits die Drucksteuerfläche 30 für den Steuerkopf 29 ausgebildet sind. Im übrigen ist, wie hier gut zu erkennen ist, der Steuerkopf 29 zur Verschleißminderung abgerundet. Schließlich ist gut zu erkennen, daß die Ausnehmung 31 einen Eintrittskanal 33 für den Steuervorsprung 28 am Hubhebel 20 aufweist. Dies ist im hier dargestellten Ausführungsbeispiel deshalb notwendig, weil die das obere Ende des Stanzwerkzeugs 5 bildende Platte relativ dick ist und daher der Steuervorsprung 28 nicht unter dieser Platte in die Ausnehmung 31 einschwenken kann.In particular, in the preferred exemplary embodiment of the invention shown in FIG. 5, the punch 5 has a recess 31 which is open laterally below the upper end and in which a stroke control surface 32 and the pressure control surface 30 for the control head 29 are formed. Otherwise, as can be clearly seen here, the control head 29 is rounded off to reduce wear. Finally, it can be clearly seen that the recess 31 has an inlet channel 33 for the control projection 28 on the lifting lever 20. This is necessary in the exemplary embodiment shown here because the plate forming the upper end of the punch 5 is relatively thick and therefore the control projection 28 cannot pivot into the recess 31 below this plate.

Insgesamt ist mit der Lehre der Erfindung eine Zwangssteuerung der Bewegung des Stanzwerkzeugs 5 sowohl nach oben als auch nach unten in Fig. 5 gewährleistet, so daß es unmöglich ist, daß das Stanzwerkzeug 5 mit seinem oberen Ende mit dem Kraftübertragungsschieber 18 kollidieren und sich verklemmen kann.Overall, with the teaching of the invention a positive control of the movement of the punch 5 is guaranteed both up and down in Fig. 5, so that it is impossible that the punch 5 can collide with its upper end with the power transmission slide 18 and jam .

Claims (8)

  1. An upper tool carrier for a punch or the like, with at least one punching tool, preferably several punching tools arranged side by side, in which, preferably, each punching tool consists of a punch, a punch holder, and a screw cap uniting the punch to the punch holder, with a carrier, with a reception plate, and with a tool guide for each punching tool, located in the reception plate and extending in the punching direction, in which the upper end of the punching tool is slidably guided in the tool guide in a direction that is limited by support flanges, the punching direction, in which a reception space for the upper end of the punching tool is provided in the carrier above the tool guide and below a force-transmission surface, and the reception space can be bridged over by means of a force-transmission slider or the like that can be slid approximately perpendicularly to the direction of punching, in which a lifting lever located on the carrier is assigned to the punching tool and the lifting lever catches under the upper end of the associated punching tool at its side and from below and in which when the force-transmission slider is retracted the upper end of the punching tool can be actively lifted into the reception space by means of the lifting lever, characterized in that when the force-transmitting slider (18) is slid forward the upper end of the punching tool (5) can be actively lowered by compulsory control out of the reception space (17) by means of the lifting lever (20), and that thus a collision between the upper end of the punching tool (5) and the force-transmission slider (18) is excluded.
  2. A tool carrier according to Claim 1, characterized in that the lifting lever (20) possesses a lowering control surface (27) that works in conjunction with the face (26) of the force-transmission slider (18) that faces the reception space (17), and the face (26) of the force-transmission slider (18) that faces the reception space (17) comes into contact with the lowering control surface (27) of the lifting lever (20) and lowers it before the face (26) comes into contact with the upper end of the punching tool (5).
  3. A tool carrier according to Claim 2, characterized in that when the force-transmission slider (18) is pushed forward the lowering control surface (27) is overridden by the face (26) that faces the reception space (17).
  4. A tool carrier according to Claim 2 or 3, characterized in that a control projection (28), jutting up into the forward movement path of the force-transmission slider (18) and bearing the lowering control surface (27), is formed on the arm of lifting lever (20) that catches under the upper end of punching tool (5), and at its face that is turned towards face (26)of the force-transmission slider (18).
  5. A tool carrier according to one of Claims 1 to 4, characterized in that the lifting lever (20) possesses a control head (29) that catches under the upper end of the punching tool (5), and the punching tool (5) possesses a pressure control surface (30) below its upper end, and that the control head (29) in lowering comes into contact with the pressure control surface (30), transmitting force.
  6. A tool carrier according to Claim 5, characterized in that the punching tool (5) has an open recess (31) at its side below its upper end, and in the recess (31) on one hand a lifting control surface (32) and on the other hand the pressure control surface (30) for the control head (29) are formed.
  7. A tool carrier according to Claim 5 or 6, characterized in that the control head (29) is rounded off to reduce wear.
  8. A tool carrier according to Claim 6 and possibly Claim 7, characterized in that the recess (31) possesses an entry channel (33) for the control projection (28).
EP87115368A 1986-11-04 1987-10-21 Upper tool holder for a punch or the like Expired - Lifetime EP0266625B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87115368T ATE72526T1 (en) 1986-11-04 1987-10-21 UPPER TOOL CARRIER FOR A PUNCH OD. DGL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3637486 1986-11-04
DE3637486A DE3637486C1 (en) 1986-11-04 1986-11-04 Upper tool carrier for a punch or the like.

Publications (3)

Publication Number Publication Date
EP0266625A2 EP0266625A2 (en) 1988-05-11
EP0266625A3 EP0266625A3 (en) 1990-01-10
EP0266625B1 true EP0266625B1 (en) 1992-02-12

Family

ID=6313103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115368A Expired - Lifetime EP0266625B1 (en) 1986-11-04 1987-10-21 Upper tool holder for a punch or the like

Country Status (10)

Country Link
US (2) US4836009A (en)
EP (1) EP0266625B1 (en)
JP (1) JPS63123541A (en)
AT (1) ATE72526T1 (en)
BR (1) BR8705863A (en)
CA (1) CA1302868C (en)
DE (2) DE3637486C1 (en)
ES (1) ES2029469T3 (en)
GR (1) GR3004034T3 (en)
MX (1) MX161210A (en)

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CN103433387A (en) * 2013-08-28 2013-12-11 东风柳州汽车有限公司 Stamping hole flanging device
CN106391854A (en) * 2016-10-28 2017-02-15 安徽鲲鹏装备模具制造有限公司 Die strip installation mechanism for bending machine

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US9174259B2 (en) 2011-01-19 2015-11-03 Ford Global Technologies, Llc Method and apparatus for sharp flanging and trimming sheet metal panels
CN104438860B (en) * 2014-12-24 2016-03-02 安徽江淮汽车股份有限公司 The stamping parts material-supporting device of diel and diel
CN105499387A (en) * 2015-12-19 2016-04-20 浙江黄岩冲模有限公司 Seesaw-type upper flange stamping die and stamping method thereof
CN107866487A (en) * 2017-10-10 2018-04-03 合肥常青机械股份有限公司 It is a kind of to upper overturning seesaw-type motion
CN113211080A (en) * 2021-05-14 2021-08-06 武鑫鑫 Buckle frock of bending is used in water dispenser processing

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DE1552618A1 (en) * 1966-04-14 1970-04-09 Peter Heck Device for punching flat workpieces
IT944297B (en) * 1971-01-02 1973-04-20 Schloemann Ag EXTRUSION PRESS WITH ROTATING HEAD TOOL HOLDER AXIAL TRANSLATION
SE423196B (en) * 1977-06-21 1982-04-26 Pullmax Ab DEVICE FOR TOOL SWITCHING AT CUTTING MACHINES
SU854515A1 (en) * 1978-03-27 1981-08-18 Азовское специальное конструкторское бюро кузнечно-прессового оборудования и автоматических линий Apparatus for securing punches for punching holes
CH627965A5 (en) * 1978-05-03 1982-02-15 Standard Telephon & Radio Ag Punching machine
DE2940661A1 (en) * 1979-10-06 1981-04-09 Fa. Muhr und Bender, 5952 Attendorn MACHINE TOOL
DE3440093A1 (en) * 1984-11-02 1986-05-07 Fa. Muhr und Bender, 5952 Attendorn MACHINE TOOL, ESPECIALLY PUNCHING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103433387A (en) * 2013-08-28 2013-12-11 东风柳州汽车有限公司 Stamping hole flanging device
CN106391854A (en) * 2016-10-28 2017-02-15 安徽鲲鹏装备模具制造有限公司 Die strip installation mechanism for bending machine
CN106391854B (en) * 2016-10-28 2017-11-07 安徽鲲鹏装备模具制造有限公司 A kind of mould bar installing mechanism of bender

Also Published As

Publication number Publication date
EP0266625A3 (en) 1990-01-10
DE3637486C1 (en) 1988-03-31
MX161210A (en) 1990-08-20
JPS63123541A (en) 1988-05-27
BR8705863A (en) 1988-06-14
US4827758A (en) 1989-05-09
ATE72526T1 (en) 1992-02-15
GR3004034T3 (en) 1993-03-31
CA1302868C (en) 1992-06-09
JPH0474097B2 (en) 1992-11-25
US4836009A (en) 1989-06-06
DE3776684D1 (en) 1992-03-26
EP0266625A2 (en) 1988-05-11
ES2029469T3 (en) 1992-08-16

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