EP0880416B1 - Hydraulic manual device - Google Patents

Hydraulic manual device Download PDF

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Publication number
EP0880416B1
EP0880416B1 EP97910372A EP97910372A EP0880416B1 EP 0880416 B1 EP0880416 B1 EP 0880416B1 EP 97910372 A EP97910372 A EP 97910372A EP 97910372 A EP97910372 A EP 97910372A EP 0880416 B1 EP0880416 B1 EP 0880416B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
fixing device
hydraulic piston
hand tool
pressure pad
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
EP97910372A
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German (de)
French (fr)
Other versions
EP0880416A1 (en
Inventor
Egbert Frenken
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.)
Gustav Klauke GmbH
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Gustav Klauke GmbH
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Publication date
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Publication of EP0880416A1 publication Critical patent/EP0880416A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/20—Drives for riveting machines; Transmission means therefor operated by hydraulic or liquid pressure
    • 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
    • B21D28/002—Drive of the 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
    • B21D28/343—Draw punches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/005—Hydraulic driving means
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53222—Means comprising hand-manipulatable implement
    • Y10T29/53226—Fastening by deformation

Definitions

  • the invention relates to a hydraulic handheld device according to the features of Preamble of claim 1.
  • Such hydraulic hand tools are already in different Embodiments have become known.
  • Such a trained Handheld device can not only be used as a portable punching device, for example for punching of holes in sheet metal plates, but can, with more special Design, such as use as a blind riveter. Regarding The latter is based, for example, on a prior art according to EP B1 62 206 directed.
  • DE-A-19512 594 is a hydraulic handheld device a push / pull device known in the form of a punching device, with a hydraulic piston movable relative to a cylinder housing, a Counterholder and an anchoring device for the punch, in which the anchoring device is firmly connected to the cylinder housing and the counter-holder part by the hydraulic piston relative to the anchoring device is movable.
  • the arrangement of the counter holder surface is still not considered satisfactory.
  • the invention deals with the technical Problem, the well-known hydraulic handheld device, in particular constructively, improve and to simplify as much as possible.
  • the device can also be more compact be formed.
  • the counterhold in is essentially annular.
  • the anchoring device can, so far, also agree with the known design, central to the counter holder be arranged. Enforced according to the invention the counter-holder the anchoring device , So is the application of force in a simple way the counterholder by means of the hydraulic piston nevertheless central arrangement of the anchoring device possible.
  • the hydraulic piston can in this case Detail the anchoring means Push the push rods through, which are placed on the counter holder act. To hold the counter holder together with the Hydraulic pistons can further separate screw connections be executed.
  • the hydraulic piston at the anchoring device in his Rest position is spring-supported.
  • a simple one is enough Compression spring between the top of the hydraulic piston and the underside of the anchoring device.
  • a specific design also provides for how already mentioned basically that the hydraulic piston essentially over an entire cross-sectional area is acted upon.
  • a hydraulic handheld device 1 with a counter holder 2 and an anchoring device 3.
  • the anchoring device 3 has an internal thread 4, in which in the device according to the embodiment, one Sheet metal punch device to attach a punch.
  • the counter holder part 2 is relative to the anchoring device 3 movable, namely extendable.
  • the anchoring device 3 is fixed attached to a housing 6 of the handheld device, namely by means of a cylinder housing 25 for a hydraulic piston 5. In the embodiment via a thread 7 and locking screws 8.
  • a hydraulic reservoir in a container 11 accommodated To act on the hydraulic piston 5 is in the Handheld device 1 a hydraulic reservoir in a container 11 accommodated.
  • the loading takes place in detail driven by means of an electric motor 12 Pump plunger 13.
  • the drive takes place via a the motor shaft 14 radially attached eccentric 15.
  • the Eccentric 15 interacts with a ball bearing, whereby the inner ring 16 of the ball bearing firmly with the eccentric is connected, however, the outer ring 17 on an underside 18 of the pump plunger 13 acts.
  • the pump plunger 13 is in its lower position by a compression spring 19th biased.
  • the hydraulic piston 5 has in further detail an upper piston surface 20 which acts on the counterholder 2 pushrods 21 are supported.
  • the push rods 21 are different on a lower surface 22 of the essentially circular counter-holder 2.
  • the counter-holder is offset at an angle from the push rods 21 2 by means of mounting screws 23 firmly with the hydraulic piston 5 connected.
  • the fastening screws 23 are in detail with an annular flange 24 of the hydraulic piston connected.
  • the Ring flange 24 extends in part overlap to the cylinder housing 25, which is device-fixed is.
  • the cylinder housing 25 has a counter holder side External thread 7, by means of which the anchoring device 3 is screw-connected to the hydraulic device. Accordingly, the anchoring device 3 is on the cylinder housing side also formed like a cylinder, on the opposite side a cylinder bottom or a Bracket plate is formed.
  • the cylinder bottom is on the one hand, accessible from the outside, with an internal thread 4 having anchoring opening formed and on the other hand has the through openings 26, 27 for the push rods 21 or fastening screws 23. In this respect, this also results from the cross-sectional representation 4, to which still further below is received.
  • the embodiment are in three push rods 21 each with the same angular distribution and three fastening screws 23 are provided.
  • the Counterholder is here with an internal thread 28 Cylinder housing 25 on the counter holder side of the cylinder housing connected. Furthermore, the counter holder part 2 2 to 4 an outer, according to the embodiment of FIGS. Ceiling-like protruding cover wall 29 on the housing side out. The cover wall 29 moves in the embodiment outside on the cylinder housing 25 at a Actuation stroke of the counter holder. 3 is the actuated position shown. So is a maximum Utilization with regard to the outer diameter for reached the counter support surface.
  • FIGS. 3 to 4 is a further modification 1 or FIGS. 3 to 4 shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Press Drives And Press Lines (AREA)
  • Manipulator (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Soil Working Implements (AREA)
  • Earth Drilling (AREA)

Abstract

PCT No. PCT/EP97/05302 Sec. 371 Date Sep. 25, 1998 Sec. 102(e) Date Sep. 25, 1998 PCT Filed Sep. 27, 1997 PCT Pub. No. WO98/24570 PCT Pub. Date Jun. 11, 1998A manual hydraulic apparatus (1) with a traction/pressure installation, for example, a hole punch apparatus, with a hydraulic piston (5) which can be moved with respect to a cylindrical housing (25), and with a holding-up part (2) and a fastening installation (3), for example, for a piercing punch. The fastening installation (3) is rigidly connected to the cylindrical housing (25) and the holding-up part (2) can be moved by the hydraulic piston (5) with respect to the fastening installation (3).

Description

Die Erfindung betrifft ein hydraulisches Handgerät nach den Merkmalen des Oberbegriffs des Anspruches 1.The invention relates to a hydraulic handheld device according to the features of Preamble of claim 1.

Derartige hydraulische Handgeräte sind bereits in verschiedenen Ausführungsformen bekannt geworden. Ein solcherart ausgebildetes Handgerät lässt sich nicht nur als transportables Lochgerät, etwa zum Stanzen von Löchern in Blechplatten benutzen, sondern kann, bei weiterer spezieller Ausgestaltung, etwa auch als Blindnietgerät Verwendung finden. Hinsichtlich Letzterem wird bspw. auf einen Stand der Technik gemäß der EP B1 62 206 verwiesen.Such hydraulic hand tools are already in different Embodiments have become known. Such a trained Handheld device can not only be used as a portable punching device, for example for punching of holes in sheet metal plates, but can, with more special Design, such as use as a blind riveter. Regarding The latter is based, for example, on a prior art according to EP B1 62 206 directed.

Darüber hinaus ist aus der DE-A-19512 594 ein hydraulisches Handgerät mit einer Zug-/Druckeinrichtung in Form eines Lochstanzgerätes bekannt, mit einem relativ zu einem Zylindergehäuse verfahrbaren Hydraulikkolben, einem Gegenhalter und einer Verankerungseinrichtung für den Lochstempel, bei dem die Verankerungseinrichtung fest mit dem Zylindergehäuse verbunden ist und das Gegenhalterteil durch den Hydraulikkolben relativ zu der Verankerungseinrichtung bewegbar ist. Die Anordnung der Gegenhalterfläche wird noch nicht als zufriedenstellend angesehen. In addition, from DE-A-19512 594 is a hydraulic handheld device a push / pull device known in the form of a punching device, with a hydraulic piston movable relative to a cylinder housing, a Counterholder and an anchoring device for the punch, in which the anchoring device is firmly connected to the cylinder housing and the counter-holder part by the hydraulic piston relative to the anchoring device is movable. The arrangement of the counter holder surface is still not considered satisfactory.

Ausgehend von dem vorbeschriebenen Stand der Technik beschäftigt sich die Erfindung mit der technischen Problematik, das bekannte hydraulische Handgerät, insbesondere in konstruktiver Hinsicht, zu verbessern und möglichst zu vereinfachen.Based on the state of the art described above the invention deals with the technical Problem, the well-known hydraulic handheld device, in particular constructively, improve and to simplify as much as possible.

Diese technische Problematik ist beim Gegenstand des Anspruches 1 gelöst. Wesentlich ist hierbei eine feste Verbindung mit der Verankerungseinrichtung mit dem Gehäuse selbst. Jedenfalls mittelbar ist die Verankerungeinrichtung hierbei - auch - mit dem feststehenden Zylindergehäuse verbunden. Zwischen dem beweglichen und feststehenden Teil der Antriebseinrichtung ist ein Austausch vorgenommen worden. Es ist erkannt worden, daß, in Umkehrung des bislang bei einem derartigen Gerät verfolgten Prinzips, das Gegenhalterteil aktiv bewegt werden kann, also das hydraulische Handgerät bei Benutzung sich selbst von einer Gegenhalterfläche abstemmt, während die Verankerungseinrichtung feststehend ist. Dieser Austausch zwischen dem beweglichen und dem feststehenden Teil ermöglicht eine wesentlich einfachere konstruktive Ausgestaltung. Der Hydraulikkolben kann bei Betätigung bodenseitig beaufschlagt werden. Die gesamte Kolbenfläche kann hierfür zur Verfügung stehen. Da eine Beaufschlagung des Hydraulikkolbens auf seiner Oberseite - der in Richtung des Gegenhalters weisenden Seite - entfallen kann, kann das Gerät auch hierdurch kompakter ausgebildet werden. In weiterer vorteilhafter Ausgestaltung sieht die Erfindung vor, daß der Gegenhalter im wesentlichen kreisringförmig ausgebildet ist. Die Verankerungseinrichtung kann, insoweit auch übereinstimmend mit der bekannten Ausführung, zentral zu dem Gegenhalter angeordnet sein. Erfindungsgemäß durchsetzt der Gegenhalter die Verankerungseinrichtung . So ist in eifacher Weise die Kraftbeaufschlagung des Gegenhalters mittels des Hydraulikkolbens bei gleichwohl zentralen Anordnung der Verankerungseinrichtung möglich. Der Hydraulikkolben kann hierbei in weiterer Einzelheit die Verankerungseinrichtung mittels Druckstangen durchsetzen, welche auf den Gegenhalter einwirken. Zum Zusammenhalt des Gegenhalters mit dem Hydraulikkolben können im weiteren gesonderte Schraubverbindungen ausgeführt sein. Andererseits können die Druckstangen auch bei entsprechender Gestaltung zugleich die Verankerungsaufgabe der Teile zueinander übernehmen. Darüber hinaus ist bevorzugt, daß der Hydraulikkolben an der Verankerungseinrichtung in seine Ruhestellung federabgestützt ist. Es genügt eine einfache Druckfeder zwischen der Oberseite des Hydraulikkolbens und der Unterseite der Verankerungseinrichtung. Weiter sieht eine konkrete Ausgestaltung auch vor, wie bereits grundsätzlich angesprochen, daß der Hydraulikkolben im wesentlichen über eine gesamte Querschnittsfläche beaufschlagbar ist.This technical problem is solved in the subject of claim 1. Essential is a fixed connection to the anchoring device with the housing itself. In any case, indirectly is the anchoring device - also - with connected to the fixed cylinder housing. Between the moving and fixed Part of the drive device has been replaced Service. It has been recognized that, in reverse of the principle previously pursued in such a device, the counter holder part can be moved actively, that is hydraulic hand tool when using itself from a counter-holder surface while the anchoring device is fixed. This exchange between the moving and the fixed part enables a much simpler constructive Design. The hydraulic piston can be activated be applied to the bottom. The entire piston area can be available for this. Because an application of the hydraulic piston on its top - the side facing the counter-holder - can be omitted, the device can also be more compact be formed. In a further advantageous embodiment The invention provides that the counterhold in is essentially annular. The anchoring device can, so far, also agree with the known design, central to the counter holder be arranged. Enforced according to the invention the counter-holder the anchoring device , So is the application of force in a simple way the counterholder by means of the hydraulic piston nevertheless central arrangement of the anchoring device possible. The hydraulic piston can in this case Detail the anchoring means Push the push rods through, which are placed on the counter holder act. To hold the counter holder together with the Hydraulic pistons can further separate screw connections be executed. On the other hand, they can Push rods at the same time with a corresponding design the anchoring task of the parts to each other take. In addition, it is preferred that the hydraulic piston at the anchoring device in his Rest position is spring-supported. A simple one is enough Compression spring between the top of the hydraulic piston and the underside of the anchoring device. A specific design also provides for how already mentioned basically that the hydraulic piston essentially over an entire cross-sectional area is acted upon.

Nachstehend ist die Erfindung desweiteren anhand der beigefügten Zeichnung, welche jedoch lediglich ein Ausführungsbeispiel darstellt, erläutert. Hierbei zeigt:

Fig. 1
eine prinzipielle Querschnittsdarstellung eines als Blechlochgerät ausgebildeten hydraulischen Handgerätes;
Fig. 2
einen Querschnitt durch den Kolben- / Gegenhalterteil eines Gerätes gemäß Fig. 1, bei einer alternativen Ausführungsform;
Fig. 3
eine Ansicht gemäß Fig. 2 in betätigter Stellung;
Fig. 4
einen Querschnitt durch den Gegenstand gemäß Fig. 2, geschnitten entlang der Linie IV-IV;
Fig. 5
eine Darstellung gemäß Fig. 2, bei einer weiteren alternativen Ausführungsform;
Fig. 6
eine Darstellung des Gegenstandes gemäß Fig. 5, in betätigtem Zustand.
The invention is further explained below with reference to the accompanying drawing, which, however, only represents an exemplary embodiment. Here shows:
Fig. 1
a basic cross-sectional view of a hydraulic handheld device designed as a sheet metal punching device;
Fig. 2
a cross section through the piston / counter-holder part of a device according to FIG 1, in an alternative embodiment.
Fig. 3
a view of Figure 2 in the actuated position.
Fig. 4
a cross section through the object of Figure 2, taken along the line IV-IV.
Fig. 5
a representation of Figure 2, in a further alternative embodiment.
Fig. 6
a representation of the object of FIG. 5, in the actuated state.

Dargestellt und beschrieben ist, zunächst mit Bezug zu Fig. 1, ein hydraulisches Handgerät 1, mit einem Gegenhalter 2 und einer Verankerungseinrichtung 3. Die Verankerungseinrichtung 3 besitzt ein Innengewinde 4, in welchem bei dem Gerät gemäß Ausführungsbeispiel, einem Blechlochgerät, ein Lochstempel zu befestigen ist.Is shown and described, initially with reference to Fig. 1, a hydraulic handheld device 1, with a counter holder 2 and an anchoring device 3. The anchoring device 3 has an internal thread 4, in which in the device according to the embodiment, one Sheet metal punch device to attach a punch.

Das Gegenhalterteil 2 ist relativ zu der Verankerungseinrichtung 3 bewegbar, nämlich ausfahrbar angeordnet. Die Verankerungseinrichtung 3 ist dagegen feststehend an einem Gehäuse 6 des Handgerätes befestigt, und zwar vermittels eines Zylindergehäuses 25 für einen Hydraulikkolben 5. Beim Ausführungsbeispiel über ein Gewinde 7 und Feststellschrauben 8.The counter holder part 2 is relative to the anchoring device 3 movable, namely extendable. The anchoring device 3, however, is fixed attached to a housing 6 of the handheld device, namely by means of a cylinder housing 25 for a hydraulic piston 5. In the embodiment via a thread 7 and locking screws 8.

Zur Bewegung des Gegenhalters 2 wird dieser von dem genannten Hydraulikkolben 5 beaufschlagt, der seinerseits über eine Druckfeder 9 an einer Unterseite 10 des feststehenden Gegenhalters 3 in - seine - dargestellte unbetätigte Stellung abgestützt ist.To move the counter holder 2, this is from the called hydraulic piston 5, which in turn via a compression spring 9 on an underside 10 of the fixed counter holder 3 in - his - shown unactuated position is supported.

Zur Beaufschlagung des Hydraulikkolbens 5 ist in dem Handgerät 1 ein Hydraulikvorrat in einem Behältnis 11 untergebracht. Die Beaufschlagung geschieht im Einzelnen über einen mittels eines Elektromotors 12 angetrieben Pumpstößel 13. Der Antrieb erfolgt über einen an der Motorwelle 14 radial befestigten Exzenter 15. Der Exzenter 15 wirkt mit einem Kugellager zusammen, wobei der Innenring 16 des Kugellagers fest mit dem Exzenter verbunden ist, dagegen der Außenring 17 auf eine Unterseite 18 des Pumpstößels 13 wirkt. Der Pumpstößel 13 ist in seine untere Stellung durch eine Druckfeder 19 vorgespannt.To act on the hydraulic piston 5 is in the Handheld device 1 a hydraulic reservoir in a container 11 accommodated. The loading takes place in detail driven by means of an electric motor 12 Pump plunger 13. The drive takes place via a the motor shaft 14 radially attached eccentric 15. The Eccentric 15 interacts with a ball bearing, whereby the inner ring 16 of the ball bearing firmly with the eccentric is connected, however, the outer ring 17 on an underside 18 of the pump plunger 13 acts. The pump plunger 13 is in its lower position by a compression spring 19th biased.

Im übrigen wird hinsichtlich der Ausgestaltung eines solchen Antriebes auch auf die US-PSen 5,111,681 und 5,195,354 verwiesen. Der Hydraulikkolben 5 besitzt in weiterer Einzelheit eine obere Kolbenfläche 20, an welcher auf den Gegenhalter 2 einwirkende Stäßelstangen 21 abgestützt sind. Die Stößelstangen 21 liegen anderendig an einer Unterfläche 22 des insoweit im wesentlichen kreisringförmig ausgebildeten Gegenhalters 2 an.Otherwise, with regard to the design of a such drive also on US Patents 5,111,681 and 5,195,354. The hydraulic piston 5 has in further detail an upper piston surface 20 which acts on the counterholder 2 pushrods 21 are supported. The push rods 21 are different on a lower surface 22 of the essentially circular counter-holder 2.

Winkelversetzt zu den Stößelstangen 21 ist der Gegenhalter 2 mittels Halterungsschrauben 23 fest mit dem Hydraulikkolben 5 verbunden.The counter-holder is offset at an angle from the push rods 21 2 by means of mounting screws 23 firmly with the hydraulic piston 5 connected.

Die Befestigungsschrauben 23 sind im Einzelnen mit einem Ringflansch 24 des Hydraulikkolben verbunden. Der Ringflansch 24 erstreckt sich zum Teil in Überdeckung zu dem Zylindergehäuse 25, welches gerätefest ausgebildet ist. The fastening screws 23 are in detail with an annular flange 24 of the hydraulic piston connected. The Ring flange 24 extends in part overlap to the cylinder housing 25, which is device-fixed is.

Das Zylindergehäuse 25 besitzt gegenhalterseitig ein Außengewinde 7, mittels welchem die Verankerungseinrichtung 3 mit dem Hydraulikkgerät schraubverbunden ist. Entsprechend ist die Verankerungseinrichtung 3 zylindergehäuseseitig gleichfalls zylinderartig ausgebildet, wogegen gegenhalterseitig ein Zylinderboden oder eine Halterungsplatte ausgebildet ist. Der Zylinderboden ist einerseits, von außen zugänglich, mit einer das Innengewinde 4 aufweisenden Verankerungsöffnung ausgebildet und besitzt andererseits die Durchführöffnungen 26, 27 für die Stößelstangen 21 bzw. Befestigungsschrauben 23. Dies ergibt sich insoweit auch aus der Querschnittsdarstellung gemäß Fig. 4, auf welche noch weiter unter eingegangen wird. Beim Ausführungsbeispiel sind in jeweils gleicher Winkelverteilung drei Stößelstangen 21 und drei Befestigungsschrauben 23 vorgesehen.The cylinder housing 25 has a counter holder side External thread 7, by means of which the anchoring device 3 is screw-connected to the hydraulic device. Accordingly, the anchoring device 3 is on the cylinder housing side also formed like a cylinder, on the opposite side a cylinder bottom or a Bracket plate is formed. The cylinder bottom is on the one hand, accessible from the outside, with an internal thread 4 having anchoring opening formed and on the other hand has the through openings 26, 27 for the push rods 21 or fastening screws 23. In this respect, this also results from the cross-sectional representation 4, to which still further below is received. In the embodiment are in three push rods 21 each with the same angular distribution and three fastening screws 23 are provided.

In den Fig. 2 bis 4 ist eine hinsichtlich des Gegenhalters abgewandelte Ausführungsform dargestellt. Der Gegenhalter ist hier über ein Innengewinde 28 mit dem Zylindergehäuse 25 gegenhalterseitig des Zylindergehäuses verbunden. Im weiteren bildet das Gegenhalterteil 2 gemäß der Ausführungsform der Fig. 2 bis 4 eine äußere, gehäuseseitig zylinderartig vorstehende Abdeckwand 29 aus. Die Abdeckwand 29 bewegt sich beim Ausführungsbeispiel außenseitig auf dem Zylindergehäuse 25 bei einem Betätigungshub des Gegenhalters. In Fig. 3 ist die betätigte Stellung dargestellt. So ist eine maximale Ausnutzung hinsichtlich des äußeren Durchmessers für die Gegenhalterfläche erreicht.2 to 4 is one with respect to the counter holder modified embodiment shown. The Counterholder is here with an internal thread 28 Cylinder housing 25 on the counter holder side of the cylinder housing connected. Furthermore, the counter holder part 2 2 to 4 an outer, according to the embodiment of FIGS. Ceiling-like protruding cover wall 29 on the housing side out. The cover wall 29 moves in the embodiment outside on the cylinder housing 25 at a Actuation stroke of the counter holder. 3 is the actuated position shown. So is a maximum Utilization with regard to the outer diameter for reached the counter support surface.

Aus der Querschnittsdarstellung gemäß Fig. 4 ist ersichtlich, daß - insoweit übereinstimmend mit der Ausführungsform der Fig. 1 - sowohl die Stößelstangen 21, wie die Befestigungsschrauben 23 einen äußeren Bereich der Befestigungseinrichtung 3 durchsetzen.4 shows that that - so far in accordance with the embodiment 1 - both the push rods 21, like the fastening screws 23 an outer area of the fastening device 3.

In den Fig. 5 und 6 ist nochmals eine weiter Abwandlung der Ausführungsform der Fig. 1 bzw. der Fig. 3 bis 4 dargestellt.5 and 6 is a further modification 1 or FIGS. 3 to 4 shown.

Hier ist eine Übereinstimmung mit der Ausführungsform der Fig. 2 bis 4 gegeben, mit der Abwandlung, daß der Schürzenbereich 29 in Wegfall gekommen ist. Stattdessen durchsetzt der bewegliche Gegenhalter 2, insoweit in Übereinstimmung mit der Ausführungsform der Fig 1, in kreisringförmiger Gestaltung eine obere Abschlußfläche 30 der Verankerungseinrichtung 3.Here is a match with the embodiment 2 to 4, with the modification that the Apron area 29 has disappeared. Instead penetrates the movable counter-holder 2, in so far as According to the embodiment of FIG. 1, in circular design an upper end surface 30 of the anchoring device 3.

Allen Ausführungsformen ist gemeinsam, daß der Hydraulikkolben 5, in einem nach außen, von dem Handgerät 1 wegweisenden Richtung über seine gesamte (untere) Querschnittsfläche 31 beim Arbeitshub von dem Hydraulikmittel beaufschlagt ist.All embodiments have in common that the hydraulic piston 5, in an outward direction, from the handheld device 1 groundbreaking direction over its entire (lower) cross-sectional area 31 during the working stroke of the hydraulic fluid is acted upon.

Claims (8)

  1. Hydraulic hand tool (1) having a pull/push device, for example a punching tool, having a hydraulic piston (5) which is displaceable relative to a cylinder housing (25), a pressure pad portion (2) and a fixing device (3), for example for a piercing die, the fixing device (3) being fixedly connected to the cylinder housing (25) and the pressure pad portion (2) being movable relative to the fixing device (3) by the hydraulic piston (5), characterized in that the pressure pad portion (2) passes through the fixing device (3).
  2. Hydraulic hand tool according to Claim 1 characterized in that the fixing device (3) is formed to be stationary and that the pressure pad (2) is movable relative to the fixing device (3) by means of the hydraulic piston (5).
  3. Hydraulic hand tool according to one of the preceding claims, characterized in that the pressure pad portion (2) is formed substantially in the shape of an annulus.
  4. Hydraulic hand tool according to one of the preceding claims, characterized in that the fixing device (3) is disposed centrally with respect to the pressure pad portion (2).
  5. Hydraulic hand tool according to one of the preceding claims, characterized in that the hydraulic piston (5) acts on the pressure pad (2) by means of the pressure rods (21) passing through the fixing device (3).
  6. Hydraulic hand tool according to one of the preceding claims, characterized in that the pressure pad (2) is screw connected to the hydraulic piston (5).
  7. Hydraulic hand tool according to one of the preceding claims, characterized in that the hydraulic piston (5) is, in its rest position, spring-supported on the fixing device (3).
  8. Hydraulic hand tool according to one of the preceding claims, characterized in that the hydraulic piston (5) can be acted on substantially over its entire cross-sectional area.
EP97910372A 1996-12-02 1997-09-27 Hydraulic manual device Expired - Lifetime EP0880416B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19649932 1996-12-02
DE19649932A DE19649932A1 (en) 1996-12-02 1996-12-02 Hydraulic hand tool
PCT/EP1997/005302 WO1998024570A1 (en) 1996-12-02 1997-09-27 Hydraulic manual device

Publications (2)

Publication Number Publication Date
EP0880416A1 EP0880416A1 (en) 1998-12-02
EP0880416B1 true EP0880416B1 (en) 2003-05-02

Family

ID=7813391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97910372A Expired - Lifetime EP0880416B1 (en) 1996-12-02 1997-09-27 Hydraulic manual device

Country Status (6)

Country Link
US (1) US6065326A (en)
EP (1) EP0880416B1 (en)
AT (1) ATE238861T1 (en)
DE (2) DE19649932A1 (en)
ES (1) ES2193358T3 (en)
WO (1) WO1998024570A1 (en)

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DE19926481B4 (en) 1999-06-10 2013-09-12 Gustav Klauke Gmbh Hydraulic implement
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US6446482B1 (en) 2001-09-17 2002-09-10 Fci Americas Technology, Inc. Battery operated hydraulic compression tool with rapid ram advance
US6668613B2 (en) 2002-04-09 2003-12-30 Fci Americas Technology, Inc. Hydraulic compression tool and hydraulic compression tool motor
US6666064B2 (en) 2002-04-19 2003-12-23 Fci Americas Technology, Inc. Portable hydraulic crimping tool
DE10329007A1 (en) * 2003-06-27 2005-01-13 Gustav Klauke Gmbh Locking bolt for attaching a tool to a hydraulic pressing device
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DE102009026273A1 (en) 2009-07-02 2011-01-05 Gustav Klauke Gmbh Hydraulic pressing device
US8307690B2 (en) * 2009-08-28 2012-11-13 Sps Technologies, Llc Hand-tool system for installing blind fasteners
DE102010049946B4 (en) * 2010-10-28 2013-04-18 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Hydraulic crimping tool and method for controlling a hydraulic crimping tool
EP2718067B1 (en) 2011-04-11 2023-10-11 Milwaukee Electric Tool Corporation Hydraulic hand-held knockout punch driver
US9016317B2 (en) 2012-07-31 2015-04-28 Milwaukee Electric Tool Corporation Multi-operational valve
US10723035B1 (en) 2014-07-15 2020-07-28 Southwire Company, Llc Punch
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Also Published As

Publication number Publication date
DE59709975D1 (en) 2003-06-05
WO1998024570A1 (en) 1998-06-11
ES2193358T3 (en) 2003-11-01
EP0880416A1 (en) 1998-12-02
US6065326A (en) 2000-05-23
DE19649932A1 (en) 1998-06-04
ATE238861T1 (en) 2003-05-15

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