EP0252253B1 - Shifting drive for the clamping implements of presses - Google Patents

Shifting drive for the clamping implements of presses Download PDF

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Publication number
EP0252253B1
EP0252253B1 EP87107114A EP87107114A EP0252253B1 EP 0252253 B1 EP0252253 B1 EP 0252253B1 EP 87107114 A EP87107114 A EP 87107114A EP 87107114 A EP87107114 A EP 87107114A EP 0252253 B1 EP0252253 B1 EP 0252253B1
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EP
European Patent Office
Prior art keywords
slot
drive
toothed belt
push
wheel
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
EP87107114A
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German (de)
French (fr)
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EP0252253A1 (en
Inventor
Wilfried Wendland
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.)
MASCHINENFABRIK HILMA GmbH
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MASCHINENFABRIK HILMA GmbH
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Publication of EP0252253A1 publication Critical patent/EP0252253A1/en
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Publication of EP0252253B1 publication Critical patent/EP0252253B1/en
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/026—Mounting of dies, platens or press rams
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S100/00—Presses
    • Y10S100/918—Bolster and die

Definitions

  • the invention relates to an adjustment drive for slide-in clamps for fastening upper tools under the clamping surface of a press ram with generic features according to the preamble of patent claim 1.
  • US-A 3 335 657 shows such an adjustment drive, in which a spindle is mounted in the T-slot, which passes through a rotatable but axially immovable threaded nut in a clamping block that is mechanically effective by means of wedge surfaces and is connected to a motor drive.
  • slide-in clamps with hydraulically loaded clamping pistons are more common, these hydraulic slide-in clamps not only accelerating the clamping process and clamping the tool more securely, but above all more precisely, but also keeping the spindle free of the clamping forces so that it can be carried out more easily and is not subject to wear, which is due to the load with the high clamping forces.
  • the object of the invention is to provide a device for the mechanized lateral displacement of each insert clamp in its T-slot in the press ram, which works differently than the previously known, but is simple in construction and can be actuated precisely.
  • a toothed belt with a flat cross section is primarily provided as the tension element. If necessary, flat chains, ropes or the like can also be used.
  • An essential feature of the invention can be seen in the accommodation of the flat tension element between the side surfaces of the sliding block and the T-slot guide. Without impairment and without additional work compared to previous T-slot guides, space can be created for the accommodation of the tension element, without the force-transmitting surfaces on clamping the tool on the top and on the stepped underside of the sliding block having to be designed differently than before.
  • Toothed belts made of a high-strength plastic are particularly suitable, possibly with embedded steel cores, so that the toothed belt is stretch-free in the longitudinal direction, but is otherwise flexible on all sides.
  • Such a toothed belt is inexpensive to manufacture and, if necessary, can be purchased as a commercially available product.
  • an adjustment drive with the training features according to the invention has the advantage of a significantly more cost-effective production, a lower weight and in particular also the more precise positioning of the insert clamp at the desired clamping point.
  • the constructive implementation of the solution according to the invention for the task is carried out either by an endless guide of the toothed belt, the toothed belt at one end of the T-slot guide via the drive pinion of a drive unit fastened there and with the other end via a drive unit there in the T- Groove guide arranged deflection is guided, which thus forms the abutment for the transmission of tensile forces in the toothed belt, or by a finite toothed belt piece, which is attached at its ends to the end of the T-groove guide, so as to form the abutment for the To form tensile forces on the press ram, and which is guided by a drive unit via a drive pinion fixedly connected to the sliding block.
  • the drive unit can - as before - be attached on one side to the head end of the T-slot guide, so that the toothed belt extends as an endless loop through the T-slot guide and with its two strands is guided past the sliding block on both sides.
  • the drive unit moves synchronously with the sliding block and the slide-in tensioner during the adjustment movement.
  • the press ram 1 or a comparable component of the press has on the underside a T-slot guide 3 which is open to the clamping surface 1a and into which the insert clamp 4 engages with a sliding block 5 and can be moved horizontally back and forth is led.
  • the insert clamp 4 is designed in the case of the example as a commercially available, preferably hydraulically loaded clamping element and can be moved by horizontal adjustment of the sliding block 5 in the T-groove 2 into the area of the clamping edge 6 of an upper tool 7 or the like, in order to actuate the Clamping element to clamp the clamping edge of the tool.
  • the adjustment drive for the sliding block 5 of the slide-in unit comprises a toothed belt 9, which is made within the external tensioner 4 and consists of a drive unit 8 and a drive unit 8 fastened to the press ram 1 via deflections 10, a drive pinion 11 and a tensioning device 12.
  • the toothed belt 9 is guided as a closed horizontal path loop in the T-slot 2 and extends with its two strands between the side surfaces of the sliding block 5 and the opposite side surfaces of the T-slot 2 to one which is supported at the opposite end of the T-slot 2 Deflection 13.
  • the slide-in tensioner 4 or a tensioning element By switching on the drive motor 14, the slide-in tensioner 4 or a tensioning element, which may be designed in a different manner, can be moved from the position shown in full lines to the tensioning position shown in dashed lines and back.
  • An electric motor is just as suitable as the drive motor, as is a drive unit that can be pressurized with a pressure medium.
  • a finite toothed belt piece is attached at one end to the outer end of the T-slot 2 and with the other end to the inner end of the T-slot 2.
  • the toothed belt 9 runs through deflections 10 and via the drive pinion 11 through the drive unit 8, which in this exemplary embodiment is connected to the sliding block 5, so that the drive unit 8 with the drive motor 14 moves together with the tensioning device 4.
  • the application of the features of the invention is also suitable for clamping devices for fastening tools or workpieces on clamping tables or the like, provided that these have the generic training features.
  • the use of the features of the invention is independent of the specific design of the clamping means for holding the tool and also independent of the manner in which these clamping means are operated.

Description

Die Erfindung betrifft einen Verstellantrieb für Einschubspanner zur Befestigung von Oberwerkzeugen unter der Aufspannfläche eines Pressenstößels mit Gattungsmerkmalen nach dem Oberbegriff des Patentanspruches 1.The invention relates to an adjustment drive for slide-in clamps for fastening upper tools under the clamping surface of a press ram with generic features according to the preamble of patent claim 1.

Die US-A 3 335 657 zeigt einen solchen Verstellantrieb, bei dem in der T-Nut eine Spindel gelagert ist, die in einem mechanisch mittels Keilflächen wirksamen Spannkloben eine drehbar, jedoch axial unverschiebbar gelagerte Gewindemutter durchsetzt und mit einem motorischen Antrieb verbunden ist.US-A 3 335 657 shows such an adjustment drive, in which a spindle is mounted in the T-slot, which passes through a rotatable but axially immovable threaded nut in a clamping block that is mechanically effective by means of wedge surfaces and is connected to a motor drive.

Demgegenüber gebräuchlicher sind Einschubspanner mit hydraulisch beaufschlagten Spannkolben, wobei diese hydraulischen Einschubspanner nicht nur den Spannvorgang beschleunigen und das Werkzeug sicherer, vor allem aber genauer spannen, sondern auch die Spindel von den Spannkräften freihalten, so daß diese leichter ausgeführt werden kann und keinem Verschleiß unterliegt, der durch die Belastung mit den hohen Spannkräften bedingt ist.In contrast, slide-in clamps with hydraulically loaded clamping pistons are more common, these hydraulic slide-in clamps not only accelerating the clamping process and clamping the tool more securely, but above all more precisely, but also keeping the spindle free of the clamping forces so that it can be carried out more easily and is not subject to wear, which is due to the load with the high clamping forces.

Aus der DE-OS 35 01 524 sind auch Verstellantriebe für Einschubspanner bekannt, bei denen der Einschubspanner mittels einer Laschenschubkette mit Antriebsorganen verbunden ist, wobei diese Laschenschubkette sich mit Führungsgliedern in der T-Nut abstützt, so daß sie Druckkräfte übertragen kann, um die Einschubspanner mit der Laschenschubkette in die Spannposition zu schieben und aus dieser Position wieder herauszuziehen. Zum Antrieb solcher Schubketten sind aus der DE-OS 35 01 524 Zugelemente bekannt, die in einer vertikalen Schleife endlos geführt sind.From DE-OS 35 01 524 adjusting drives for slide-in clamps are also known, in which the slide-in clamp is connected to drive elements by means of a link slide chain, this link slide chain being supported with guide members in the T-slot, so that it can transmit compressive forces to the slide clamps with the link chain in the tensioning position and pull it out of this position. For driving such push chains are known from DE-OS 35 01 524 tension elements that are endlessly guided in a vertical loop.

Aufgabe der Erfindung ist die Schaffung einer Vorrichtung zum mechanisierten seitlichen Verschieben jedes Einschubspanners in seiner T-Nut im Pressenstößel, die anders als die bisher bekannten arbeitet, dabei jedoch einfach aufgebaut und genau betätigbar ist.The object of the invention is to provide a device for the mechanized lateral displacement of each insert clamp in its T-slot in the press ram, which works differently than the previously known, but is simple in construction and can be actuated precisely.

Zur Lösung dieser Aufgabe wird erfindungsgemäß eine Ausbildung mit Merkmalen nach dem Kennzeichen des Patentanspruches 1 vorgeschlagen. Analog zu einer solchen Ausbildung kann die Lösung der Aufgabe auch mit Merkmalen nach dem Patentanspruch 2 erreicht werden.To achieve this object, an embodiment with features according to the characterizing part of patent claim 1 is proposed. Analogous to such a design, the object can also be achieved with features according to claim 2.

Als Zugelement ist erfindungsgemäß vor allem ein Zahnriemen mit einem flachen Querschnitt vorgesehen. Verwendbar sind gegebenenfalls auch flache Ketten, Seile oder dergleichen. In der Unterbringung des flachen Zugelements zwischen den Seitenflächen des Nutensteines und der T-Nut-Führung ist ein wesentliches Erfindungsmerkmal zu sehen. Ohne Beeinträchtigung und ohne zusätzlichen Arbeitsaufwand gegenüber bisherigen T-Nut-Führungen kann Raum für die Unterbringung des Zugelements geschaffen werden, ohne daß die beim Spannen des Werkzeuges kräfteübertragenden Flächen an der Oberseite und an der abgestuften Unterseite des Nutensteines anders als bisher gestaltet werden müssen.According to the invention, a toothed belt with a flat cross section is primarily provided as the tension element. If necessary, flat chains, ropes or the like can also be used. An essential feature of the invention can be seen in the accommodation of the flat tension element between the side surfaces of the sliding block and the T-slot guide. Without impairment and without additional work compared to previous T-slot guides, space can be created for the accommodation of the tension element, without the force-transmitting surfaces on clamping the tool on the top and on the stepped underside of the sliding block having to be designed differently than before.

Besonders geeignet sind Zahnriemen aus einem hochfesten Kunststoff, ggf. mit eingebetteten Stahlseelen, so daß der Zahnriemen in Längsrichtung dehnungsfrei, im übrigen aber allseits flexibel ist. Ein solcher Zahnriemen ist kostengünstig herzustellen und ggf. als handelsübliches Produkt zu erwerben. Gegenüber Verstellantrieben bekannter Bauart hat ein Verstellantrieb mit den erfindungsgemäßen Ausbildungsmerkmalen den Vorteil einer wesentlich kostengünstigeren Herstellung, eines geringeren Gewichts und insbesondere auch der genaueren Positionierung des Einschubspanners an der gewünschten Einspannstelle. Für die Verbindung des Zahnriemens mit dem Antriebsritzel des motorischen Antriebes empfiehlt sich eine Umschlingung dieses Antriebsritzels um wenigstens ca. 180 Grad, so daß der Zahnriemen mittels Umlenkungen nach Art einer festen Flasche über das Antriebsritzel geführt ist.Toothed belts made of a high-strength plastic are particularly suitable, possibly with embedded steel cores, so that the toothed belt is stretch-free in the longitudinal direction, but is otherwise flexible on all sides. Such a toothed belt is inexpensive to manufacture and, if necessary, can be purchased as a commercially available product. Compared to adjustment drives of a known type, an adjustment drive with the training features according to the invention has the advantage of a significantly more cost-effective production, a lower weight and in particular also the more precise positioning of the insert clamp at the desired clamping point. For the connection of the toothed belt to the drive pinion of the motor drive, it is advisable to wrap this drive pinion by at least approximately 180 degrees, so that the toothed belt is guided over the drive pinion by means of deflections in the manner of a fixed bottle.

Die konstruktive Verwirklichung des erfindungsgemäßen Lösungsweges für die gestellte Aufgabe erfolgt entweder durch eine Endlosführung des Zahnriemens, wobei der Zahnriemen an dem einen Ende der T-Nut-Führung über das Antriebsritzel einer dort befestigten Antriebseinheit und mit dem anderen Ende über eine dort in der T-Nut-Führung angeordnete Umlenkung geführt ist, die somit das Widerlager für die Ubertragung der Zugkräfte in dem Zahnriemen bildet, oder durch ein endliches Zahnriemenstück, welches mit seinen Enden jeweils am Ende der T-Nut-Führung befestigt ist, um so das Widerlager für die Zugkräfte am Pressenstößel zu bilden, und welches durch eine Antriebseinheit über ein mit dem Nutenstein fest verbundenes Antriebsritzel geführt ist.The constructive implementation of the solution according to the invention for the task is carried out either by an endless guide of the toothed belt, the toothed belt at one end of the T-slot guide via the drive pinion of a drive unit fastened there and with the other end via a drive unit there in the T- Groove guide arranged deflection is guided, which thus forms the abutment for the transmission of tensile forces in the toothed belt, or by a finite toothed belt piece, which is attached at its ends to the end of the T-groove guide, so as to form the abutment for the To form tensile forces on the press ram, and which is guided by a drive unit via a drive pinion fixedly connected to the sliding block.

Bei der Endlosführung kann die Antriebseinheit - wie bisher- einseitig am Kopfende der T-Nut-Führung befestigt werden, so daß der Zahnriemen sich als endlose Schlinge durch die T-Nut-Führung erstreckt und mit seinen beiden Trums beidseitig an dem Nutenstein vorbeigeführt ist. Bei Verwendung eines endlichen Riemenstückes bewegt sich die Antriebseinheit mit dem Nutenstein und dem Einschubspanner bei der Verstellbewegung synchron.With the endless guide, the drive unit can - as before - be attached on one side to the head end of the T-slot guide, so that the toothed belt extends as an endless loop through the T-slot guide and with its two strands is guided past the sliding block on both sides. When using a finite belt piece, the drive unit moves synchronously with the sliding block and the slide-in tensioner during the adjustment movement.

Auf der Zeichnung sind zwei Ausführungsbeispiele der Erfindung dargestellt. Es zeigen:

  • Figur 1 einen vertikalen Teilschnitt durch eine T-Nut-Führung eines Pressenstößels mit dem Einschubspanner und der Antriebseinheit,
  • Figur 2 eine Draufsicht des Pressenstößels mit der T-Nut entsprechend Figur 1 mit Schnitt durch die Antriebseinheit,
  • Figur 3 eine Seitenansicht des Beispieles nach den Figuren 1 und 2 von links,
  • Figur 4 einen Schnitt entsprechend Figur 1, jedoch bei einem abgeänderten Ausführungsbeispiel und
  • Figur 5 eine Seitenansicht des Beispieles nach Figur 4 von links mit vertikalem Schnitt durch die Antriebseinheit.
Two exemplary embodiments of the invention are shown in the drawing. Show it:
  • FIG. 1 shows a vertical partial section through a T-slot guide of a press ram with the insert clamp and the drive unit,
  • FIG. 2 shows a top view of the press ram with the T-slot corresponding to FIG. 1 with a section through the drive unit,
  • FIG. 3 shows a side view of the example according to FIGS. 1 and 2 from the left,
  • Figure 4 shows a section corresponding to Figure 1, but in a modified embodiment and
  • Figure 5 is a side view of the example of Figure 4 from the left with a vertical section through the drive unit.

Der Pressenstößel 1 oder ein vergleichbares Bauteil der Presse weist an der Unterseite eine zur Aufspannfläche 1a offene T-Nut-Führung 3 auf, in die der Einschubspanner 4 mit einem Nutenstein 5 eingreift und darin horizontal hin und her beweglich geführt ist. Der Einschubspanner 4 ist im Falle des Beispieles als ein handelsübliches, vorzugsweise hydraulisch beaufschlagtes Spannelement gestaltet und kann durch horizontales Verstellen des Nutensteines 5 in der T-Nut 2 bis in den Bereich des Spannrandes 6 eines Oberwerkzeuges 7 oder dergleichen verschoben werden, um durch Betätigung des Spannelements den Spannrand des Werkzeuges festzuklemmen. Der Verstellantrieb für den Nutenstein 5 des Einschub einem Zahnriemen 9 zusammen, der innerhalb der außen spanners 4 setzt sich aus einer Antriebseinheit 8 und am Pressenstößel 1 befestigten Antriebseinheit 8 über Umlenkungen 10, ein Antriebsritzel 11 und eine Spannvorrichtung 12 endlos geführt ist. Der Zahnriemen 9 ist als geschlossene horizontale Bahnschleife in der T-Nut 2 geführt und erstreckt sich mit seinen beiden Trums zwischen den Seitenflächen des Nutensteines 5 und den diesen gegenüberliegenden Seitenflächen der T-Nut 2 bis zu einer am gegenüberliegenden Ende der T-Nut 2 gelagerten Umlenkung 13. Durch Einschalten des Antriebsmotors 14 kann der Einschubspanner 4 oder ein ggf. in anderer Weise gestaltetes Spannelement aus der mit vollen Linien dargestellten Position in die mit gestrichelten Linien wiedergegebene Spannposition und zurück bewegt werden. Als Antriebsmotor ist ein Elektromotor ebenso geeignet wie ein mit einem Druckmittel beaufschlagbares Antriebsaggregat.The press ram 1 or a comparable component of the press has on the underside a T-slot guide 3 which is open to the clamping surface 1a and into which the insert clamp 4 engages with a sliding block 5 and can be moved horizontally back and forth is led. The insert clamp 4 is designed in the case of the example as a commercially available, preferably hydraulically loaded clamping element and can be moved by horizontal adjustment of the sliding block 5 in the T-groove 2 into the area of the clamping edge 6 of an upper tool 7 or the like, in order to actuate the Clamping element to clamp the clamping edge of the tool. The adjustment drive for the sliding block 5 of the slide-in unit comprises a toothed belt 9, which is made within the external tensioner 4 and consists of a drive unit 8 and a drive unit 8 fastened to the press ram 1 via deflections 10, a drive pinion 11 and a tensioning device 12. The toothed belt 9 is guided as a closed horizontal path loop in the T-slot 2 and extends with its two strands between the side surfaces of the sliding block 5 and the opposite side surfaces of the T-slot 2 to one which is supported at the opposite end of the T-slot 2 Deflection 13. By switching on the drive motor 14, the slide-in tensioner 4 or a tensioning element, which may be designed in a different manner, can be moved from the position shown in full lines to the tensioning position shown in dashed lines and back. An electric motor is just as suitable as the drive motor, as is a drive unit that can be pressurized with a pressure medium.

Bei dem Ausführungsbeispiel nach den Figuren 4 und 5 ist ein endliches Zahnriemenstück mit dem einen Ende am äußeren Ende der T-Nut 2 und mit dem anderen Ende am inneren Ende der T-Nut 2 befestigt. Uber Umlenkungen 10 und über das Antriebsritzel 11 durchläuft der Zahnriemen 9 die Antriebseinheit 8, die bei diesem Ausführungsbeispiel mit dem Nutenstein 5 verbunden ist, so daß sich die Antriebseinheit 8 mit dem Antriebsmotor 14 zusammen mit der Spannvorrichtung 4 bewegt.In the exemplary embodiment according to FIGS. 4 and 5, a finite toothed belt piece is attached at one end to the outer end of the T-slot 2 and with the other end to the inner end of the T-slot 2. The toothed belt 9 runs through deflections 10 and via the drive pinion 11 through the drive unit 8, which in this exemplary embodiment is connected to the sliding block 5, so that the drive unit 8 with the drive motor 14 moves together with the tensioning device 4.

Die Anwendung der Erfindungsmerkmale ist auch bei Spannvorrichtungen zur Befestigung von Werkzeugen oder Werkstücken auf Spanntischen oder dergleichen geeignet, sofern diese die gattungsmäßigen Ausbildungsmerkmale aufweisen. Die Verwendung der Erfindungsmerkmale ist unabhängig von der spezifischen Ausbildung der Spannmittel zum Festhalten des Werkzeuges und auch unabhängig von der Art und Weise des Betriebes dieser Spannmittel.The application of the features of the invention is also suitable for clamping devices for fastening tools or workpieces on clamping tables or the like, provided that these have the generic training features. The use of the features of the invention is independent of the specific design of the clamping means for holding the tool and also independent of the manner in which these clamping means are operated.

Claims (4)

1. Adjusting drive for push-in clamps for securing upper tools (7) below the clamping surface (1a) of a press ram (1) with a T-slot guide (2), in which the push-in clamp (4) engages via a sliding block (5) and in which it can move horizontally by means of a drive motor (14) and with the use of a traction element (9), which does not expand and is without play in the direction of pull and is flexible about its longitudinal axis, characterised in that the flexible traction element (9) lies as a closed horizontal orbital loop in the T-slot, the two lateral parts of the loop extending on each side between the sliding block (5) and the slot wall, the sliding block (5) is secured to one lateral part and the traction element is deflected at a deflector roller (13) in the inner area of the longitudinal extent of the T-slot, while it can be pulled in both directions at the open end of the T-slot (2) by a stationary drive wheel (11), which lies in the plane of the orbital loop.
2. Adjusting drive for push-in clamps according to the preamble of claim 1, characterised by a toothed belt (9), which is arranged at the inner upper surface in the T-slot (2) and has a flat cross section, as the traction element, which is secured at one end to the said surface in the inner area of the longitudinal extent of the T-slot, is guided over deflector rollers (10) and a wheel (11) of a drive unit (8), which is connected to the push-in clamp (4), and is secured at the other end to the slot end, and the drive unit (8) together with the push-in clamp (4) can move to-and-fro in both directions at the toothed belt (9) by means of a wheel (11).
3. Adjusting drive according to claim 2, characterised in that the toothed belt (9) is guided over a toothed wheel (11) by means of deflectors (10) with a tensioning device (12) in a fixed block.
4. Adjusting drive according to claims 2 and 3, characterised in that the toothed belt (9) is guided over a toothed wheel (11), which is mounted on the press ram (1) at one end of the T-slot guide, and a deflector (13), which is mounted at the opposite end of the T-slot guide (2).
EP87107114A 1986-05-30 1987-05-16 Shifting drive for the clamping implements of presses Expired - Lifetime EP0252253B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3618286 1986-05-30
DE3618286A DE3618286C1 (en) 1986-05-30 1986-05-30 Adjustment drive for slide-in clamps of presses

Publications (2)

Publication Number Publication Date
EP0252253A1 EP0252253A1 (en) 1988-01-13
EP0252253B1 true EP0252253B1 (en) 1990-07-18

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Application Number Title Priority Date Filing Date
EP87107114A Expired - Lifetime EP0252253B1 (en) 1986-05-30 1987-05-16 Shifting drive for the clamping implements of presses

Country Status (4)

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US (1) US4790174A (en)
EP (1) EP0252253B1 (en)
DE (1) DE3618286C1 (en)
ES (1) ES2016303B3 (en)

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EP0294765B1 (en) * 1987-06-10 1992-04-01 Siemens Aktiengesellschaft Precision punching machine and associated tool change method
DE4026827C2 (en) * 1990-08-24 1998-11-05 Schloemann Siemag Ag Fastening device for the detachable connection of tool and tool carrier of an upsetting press
US5603237A (en) * 1995-04-19 1997-02-18 The Minster Machine Company Inching drive system for a mechanical punch press
US5715725A (en) * 1996-07-16 1998-02-10 Applied Power Inc. Biaxial travelling clamp for securing a tool to a press
US5694805A (en) * 1996-07-16 1997-12-09 Applied Power Inc. Travelling clamp with removable rails
US20070138724A1 (en) * 2005-12-16 2007-06-21 Black & Decker Clamp Device

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Publication number Priority date Publication date Assignee Title
US3335657A (en) * 1966-05-26 1967-08-15 Minster Machine Co Press with sliding bolster and die clamp
DE2343682C2 (en) * 1973-08-30 1975-04-30 L. Schuler Gmbh, 7320 Goeppingen Tool changing device on a press
GB1479281A (en) * 1974-06-12 1977-07-13 Floyd G Linear actuator mechanisms
DE2509310A1 (en) * 1975-03-04 1976-09-16 Vyzk Ustav Tvarecich Stroju Press automatic tool changer - horizontal track between press and magazine ensures picking and release of tools
FR2382630A1 (en) * 1977-03-01 1978-09-29 Peugeot Aciers Et Outillage Car window winding gear - has two parallel endless toothed belts driven by motor belts which pass over wheels of different diameters mounted on block
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CH668224A5 (en) * 1985-05-01 1988-12-15 Feintool Int Holding PRESS WITH AN UPPER AND A LOWER PLATE FOR CLAMPING A TOOL PACKAGE.

Also Published As

Publication number Publication date
EP0252253A1 (en) 1988-01-13
US4790174A (en) 1988-12-13
ES2016303B3 (en) 1990-11-01
DE3618286C1 (en) 1987-07-09

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