EP1189745B1 - Device for finely cutting workpieces from a material - Google Patents

Device for finely cutting workpieces from a material Download PDF

Info

Publication number
EP1189745B1
EP1189745B1 EP00947859A EP00947859A EP1189745B1 EP 1189745 B1 EP1189745 B1 EP 1189745B1 EP 00947859 A EP00947859 A EP 00947859A EP 00947859 A EP00947859 A EP 00947859A EP 1189745 B1 EP1189745 B1 EP 1189745B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
compensating
ring
projection
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
EP00947859A
Other languages
German (de)
French (fr)
Other versions
EP1189745A2 (en
Inventor
Ernst Rytz
Hans-Rudolf Gubler
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.)
Feintool International Holding AG
Original Assignee
Feintool International Holding AG
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 Feintool International Holding AG filed Critical Feintool International Holding AG
Publication of EP1189745A2 publication Critical patent/EP1189745A2/en
Application granted granted Critical
Publication of EP1189745B1 publication Critical patent/EP1189745B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp
    • Y10T83/5787—Clamp driven by yieldable means
    • Y10T83/5805—Fluid pressure yieldable drive 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8858—Fluid pressure actuated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9423—Punching tool
    • Y10T83/9425—Tool pair

Definitions

  • the invention relates to a device for fineblanking of workpieces made of a material with one under the Printing of a ring-shaped cylinder with a press plate Ring jag and one guided in the press plate Cutting punch with a cutting insert on a ram Counterholder (ejector) is assigned, according to the preamble of claim 1 (see e.g. DE-A-19642635).
  • a fineblanking tool consists essentially of a press plate with Ring spike in which a cutting punch is guided.
  • the cutting punch is a counterholder or Ejector assigned in a cutting insert.
  • press plate and cutting punch or cutting plate and counterholder becomes a workpiece, for example a Sheet metal, introduced.
  • Upper part and lower part of the tool are closed and the material inside and outside the cutting line by means of a ring point and Counterforce clamped.
  • Press plate and cutting plate are guided relative to the cutting punch and counterholder and so cut out the workpiece from the material.
  • To the cut opens the tool and that Workpiece usually by means of the counter holder from the Cutting plate ejected.
  • the force works with these conventional fineblanking presses of the ring-toothed cylinder, which is usually in the upper crosshead of the Machine stand is arranged, the cutting force opposite. Also the counter holder cylinder, which is in the plunger or is integrated in the working piston, presses the workpiece against the tool upper part, the counterholder support force acts also against the cutting force.
  • the counterforce of the Ring-toothed cylinders can be up to 50% and that of the Counterholder up to 25% of the workforce. In order to but the performance of the entire device becomes significant reduced.
  • the present invention has for its object a To provide device of the type mentioned above, in which the ring tooth cylinder force in a simple way is compensated and the structure of which is considerably simplified is.
  • the plunger counteracts at least one compensation cylinder is supported, the is hydraulically connected to the ring tooth cylinder.
  • the compensation cylinder is designed so that it with the ring tooth cylinder in a hydraulic Balance is there. This means that through the Compensation cylinder with every ram stroke Ring tooth cylinder force is absorbed and compensated, so that they have no influence on the actual slide stroke Has.
  • the compensation cylinder is on via a piston rod a piston firmly connected to the plunger. He is that exposed to the same pressure as a piston in the Ring-toothed cylinder, the manufacture of this
  • the easiest way to achieve pressure equilibrium is that an effective cross-sectional area of the compensation pistons the effective cross-sectional area of the ring-toothed cylinder piston equivalent. This does not result in any additional Pressure supply elements to maintain the same pressures needed on both pistons. It is enough if the two Work spaces of ring-toothed cylinders and compensation cylinders hydraulically with each other via a line are connected. The same-sized cross-sectional areas of the Pistons then exert equal pressure on the Press plate or the cutting plate or the plunger.
  • the ring-toothed cylinder is opened a crosshead of the machine frame arranged so that an additional traverse is not required. So that is moving Mass with a ram stroke much lower, so that the Energy consumption per stroke and the weight of the machine can be kept much smaller. It is not additional connecting frame (traverse) required, see above that the construction is much simpler and cheaper becomes.
  • the mounting options are significantly improved and the machine height is reduced.
  • Fineblanking tool 8 is provided, as is generally known is.
  • Fineblanking manual for the practice, publisher: Feintool AG Lyss, 2nd edition, 1977, pages 15 to 17.
  • Such a fineblanking tool 8 has one Cutting punch 9, which is guided in a press plate 10 is.
  • This press plate 10 points toward the sheet 1 Ring point 11 on.
  • the opposite is supported Press plate 10 against an annular ram piston 12 in one Ring-toothed cylinder 13 from.
  • the ring-toothed cylinder 13 is located in a corresponding housing 14 on the Crosshead 3, the ring-shaped piston 12 via a Piston rod 15 and various, unspecified Pressure plates and ram through the crosshead 3 with the press plate 10 is connected.
  • the cutting punch 9 is a counterholder 16 assigned, which can also serve as an ejector.
  • the Hydraulics for pressurizing this counter bracket 16 will not be described in more detail here. A Description is in the above manual.
  • the counter holder 16 is guided in a cutting plate 17, the cutting punch 9 the workpiece to be cut presses into this insert 17, the Counterholder 16 evades.
  • the stroke of the plunger 7 in the direction of the double arrow 18 is effected via two master cylinders 19.1 and 19.2 in which are each guided by a piston 20.1 and 20.2.
  • everyone Piston 20.1 and 20.2 is via a piston rod 21.1 and 21.2 firmly connected to the plunger 7.
  • the tappet 7 is also supported against preferably four compensation cylinders 22, whereby only one is described below.
  • the Compensation cylinder 22 becomes a compensation piston 23 performed, which in turn with a piston rod 24 with the plunger 7 is connected.
  • the or the compensation piston 23 an effective Cross-sectional area that of that of the annular toothed piston 12th equivalent.
  • the ring-toothed cylinder 13 and the Compensation cylinder 22 via a hydraulic connection 25 coupled together.
  • this hydraulic connection 25 can via a further connection 26 and a logic valve 27 an oil tank, not shown, can be switched on.
  • the two master cylinders 19.1 and 19.2 are also with each other and via a valve 28 with one not closer shown oil tank connected.
  • the cutting punch When the tool 8 is open, the cutting punch is between 9 and the cutting plate 17 or the pressing plate 10 and the Counterholder 16 introduced a sheet 1, from which a Workpiece to be cut.
  • the plunger 7 is by means of the two master cylinders 19.1 and 19.2 ramped up, the sheet 1 between Insert 17 and press plate 10 is clamped. there the ring prong 11 is pressed into the sheet 1.
  • the Forces emanating from the ring-toothed cylinder 13 are neutralized by the compensation cylinder 22 because whose pistons share the same effective Have cross-sectional area, such as Ring-toothed cylinder piston 12.
  • the cutting punch 9 presses the workpiece to be cut into the cutting plate 17, the counter-holder 16 yields.
  • the machine opens, and the counter-holder 16 can Eject the workpiece from the insert 17.
  • connection 25 is not fast enough oil exchange takes place.
  • a high oil quantity required for a short time via the logic valve 28 are sucked in from the oil tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Punching Or Piercing (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

A device for finely cutting workpieces from a material, which includes a press plate which is subjected to the pressure of a knife-edged ring cylinder consisting of a knife-edged ring and a clipping punch which is guided in the pressing plate, and associated with a blanking die with a counter holder (ejector) on a tappet, whereby the tappet is placed against at least one compensation cylinder which is hydraulically connect to the knife-edged ring cylinder.

Description

Die Erfindung betrifft eine Vorrichtung zum Feinschneiden von Werkstücken aus einem Werkstoff mit einer unter dem Druck eines Ringzackenzylinders stehenden Pressplatte mit Ringzacke und einem in der Pressplatte geführten Schneidstempel, dem an einem Stössel eine Schneidplatte mit Gegenhalter (Auswerfer) zugeordnet ist, entsprechend dem Oberbegriff von Anspruch 1 (siehe z.B. DE-A-19642635).The invention relates to a device for fineblanking of workpieces made of a material with one under the Printing of a ring-shaped cylinder with a press plate Ring jag and one guided in the press plate Cutting punch with a cutting insert on a ram Counterholder (ejector) is assigned, according to the preamble of claim 1 (see e.g. DE-A-19642635).

Das Arbeitsprinzip des Feinschneidens ist in "Feinschneiden", Handbuch für die Praxis, Herausgeber Feintool AG Lyss, 2.Auflage, 1977, Seite 15 bis 17 dargestellt und beschrieben. Ein Feinschneidwerkzeug besteht im wesentlichen aus einer Pressplatte mit Ringzacke, in der ein Schneidstempel geführt ist. Dem Schneidstempel ist gegenüberliegend ein Gegenhalter bzw. Auswerfer in einer Schneidplatte zugeordnet. The working principle of fineblanking is in "Fineblanking", practical guide, publisher Feintool AG Lyss, 2nd edition, 1977, pages 15 to 17 shown and described. A fineblanking tool consists essentially of a press plate with Ring spike in which a cutting punch is guided. the The cutting punch is a counterholder or Ejector assigned in a cutting insert.

Zwischen Pressplatte und Schneidstempel bzw. Schneidplatte und Gegenhalter wird ein Werkstück, beispielsweise ein Blech, eingeführt. Oberteil und Unterteil des Werkzeuges werden geschlossen und der Werkstoff innerhalb und ausserhalb der Schnittlinie mittels einer Ringzacken- und Gegenkraft eingespannt. Pressplatte und Schneidplatte werden relativ zu Schneidstempel und Gegenhalter geführt und so das Werkstück aus dem Werkstoff ausgeschnitten. Nach dem Ausschneiden wird das Werkzeug geöffnet und das Werkstück meist mittels dem Gegenhalter aus der Schneidplatte ausgeworfen.Between press plate and cutting punch or cutting plate and counterholder becomes a workpiece, for example a Sheet metal, introduced. Upper part and lower part of the tool are closed and the material inside and outside the cutting line by means of a ring point and Counterforce clamped. Press plate and cutting plate are guided relative to the cutting punch and counterholder and so cut out the workpiece from the material. To the cut opens the tool and that Workpiece usually by means of the counter holder from the Cutting plate ejected.

Bei diesen herkömmlichen Feinschneidpressen wirkt die Kraft des Ringzackenzylinders, der meist im oberen Querhaupt des Maschinenständers angeordnet ist, der Schneidkraft entgegen. Auch der Gegenhalterzylinder, der im Stössel oder im Arbeitskolben integriert ist, drückt das Werkstück gegen das Werkzeugoberteil, die Gegenhalterabstützkraft wirkt ebenfalls der Schneidkraft entgegen. Die Gegenkraft des Ringzackenzylinders kann bis zu 50% und diejenige des Gegenhalters bis zu 25% der Arbeitskraft betragen. Damit wird aber die Leistung der gesamten Vorrichtung erheblich vermindert.The force works with these conventional fineblanking presses of the ring-toothed cylinder, which is usually in the upper crosshead of the Machine stand is arranged, the cutting force opposite. Also the counter holder cylinder, which is in the plunger or is integrated in the working piston, presses the workpiece against the tool upper part, the counterholder support force acts also against the cutting force. The counterforce of the Ring-toothed cylinders can be up to 50% and that of the Counterholder up to 25% of the workforce. In order to but the performance of the entire device becomes significant reduced.

Zur Lösung dieses Problems schlägt die DE 196 42 635 Al vor, dass Ringzacken- und Gegenhalterzylinder verändert angeordnet werden, wobei der Ringzackenzylinder oberhalb des Ständers in einer eigenen Traverse integriert und über Säulen mit dem Stössel verbunden wird, so dass er sich synchron mit dem Stössel nach oben bewegt. Der Gegenhalterzylinder wird wiederum zwischen dem Stössel und einem unteren Querhaupt des Ständers angeordnet, wobei während des Arbeitshubes zwischen Gegenhalterzylinder und Ständer keine Relativbewegung stattfindet, so dass die Gegenhalterzylinder-Abstützkräfte vom Maschinenständer aufgenommen werden.DE 196 42 635 A1 proposes to solve this problem before ring-serrated and counter-holding cylinders changed can be arranged with the ring-toothed cylinder above of the stand integrated in its own crossbeam and over Columns connected to the pestle so that it is moved upwards in synchronism with the plunger. The Counterholder cylinder is in turn between the plunger and arranged a lower crosshead of the stand, wherein during the working stroke between counter cylinder and No relative movement takes place, so the Counterholder cylinder support forces from the machine stand be included.

Abgesehen davon, dass diese Vorrichtung sehr kompliziert aufgebaut ist und mit verschiedenen hydraulischen Arbeitskreisen arbeiten muss, wurde festgestellt, dass aus Festigkeitsgründen die Traverse für den Ringzackenzylinder sehr massiv ausgeführt werden muss. Dies erfordert wiederum die Ausgestaltung als schwere und teure Maschine, so dass die Energieeinsparung durch den mitfahrenden Ringzackenzylinder durch diese grosse, bei jedem Hub zu bewegende Masse hinfällig wird. Zudem ist die Montage sehr schwierig.Besides that, this device is very complicated is built and with different hydraulic Working groups must work, it was found that out For reasons of strength, the traverse for the ring-toothed cylinder must be very massive. Again, this requires the design as a heavy and expensive machine, so that the energy saving by the passenger Ring-toothed cylinders through this large, with each stroke too moving mass becomes obsolete. In addition, the assembly is very difficult.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der oben genannten Art zu schaffen, bei welcher die Ringzackenzylinderkraft auf einfache Art und Weise kompensiert wird und deren Aufbau wesentlich vereinfacht ist.The present invention has for its object a To provide device of the type mentioned above, in which the ring tooth cylinder force in a simple way is compensated and the structure of which is considerably simplified is.

Zur Lösung dieser Aufgabe führt, dass der Stössel gegen zumindest einen Kompensationszylinder abgestützt ist, der mit dem Ringzackenzylinder hydraulisch verbunden ist.To solve this task, the plunger counteracts at least one compensation cylinder is supported, the is hydraulically connected to the ring tooth cylinder.

Der Kompensationszylinder ist dabei so ausgelegt, dass er mit dem Ringzackenzylinder in einem hydraulischen Gleichgewicht steht. Dies bedeutet, dass durch den Kompensationszylinder bei jedem Stösselhub die Ringzackenzylinderkraft aufgefangen und kompensiert wird, so dass sie keinen Einfluss auf den eigentlichen Stösselhub hat.The compensation cylinder is designed so that it with the ring tooth cylinder in a hydraulic Balance is there. This means that through the Compensation cylinder with every ram stroke Ring tooth cylinder force is absorbed and compensated, so that they have no influence on the actual slide stroke Has.

Aus Gründen der Kraftverteilung dürfte es sich anbieten, die von dem Kompensationszylindern erzeugte Gegenkraft auf mehrere Kompensationszylinder zu verteilen. Im vorliegenden Ausführungsbeispiel ist an vier Kompensationszylinder gedacht, wobei jedoch je nach Presse und Ausführungsform mehr oder weniger Kompensationszylinder möglich sind.For reasons of power distribution, it should offer the counterforce generated by the compensation cylinders distribute several compensation cylinders. In the present Embodiment is on four compensation cylinders thought, but depending on the press and design more or fewer compensation cylinders are possible.

Der Kompensationszylinder ist über eine Kolbenstange an einem Kolben fest mit dem Stössel verbunden. Er ist dem gleichen Druck ausgesetzt, wie ein Kolben in dem Ringzackenzylinder, wobei das Herstellen dieses Druckgleichgewichtes am einfachsten dadurch erfolgt, dass eine wirksame Querschnittsfläche der Kompensationskolben der wirksamen Querschnittsfläche des Ringzackenzylinderkolbens entspricht. Hierdurch werden keine zusätzlichen Druckversorgungselemente zum Einhalten der gleichen Drücke auf beiden Kolben benötigt. Es genügt, wenn die beiden Arbeitsräume von Ringzackenzylinder und Kompensationszylinder hydraulisch miteinander über eine Leitung verbunden sind. Die gleichgrossen Querschnittsflächen der Kolben üben dann einen gleichgrossen Druck auf die Pressplatte bzw. die Schneidplatte bzw. den Stössel aus.The compensation cylinder is on via a piston rod a piston firmly connected to the plunger. He is that exposed to the same pressure as a piston in the Ring-toothed cylinder, the manufacture of this The easiest way to achieve pressure equilibrium is that an effective cross-sectional area of the compensation pistons the effective cross-sectional area of the ring-toothed cylinder piston equivalent. This does not result in any additional Pressure supply elements to maintain the same pressures needed on both pistons. It is enough if the two Work spaces of ring-toothed cylinders and compensation cylinders hydraulically with each other via a line are connected. The same-sized cross-sectional areas of the Pistons then exert equal pressure on the Press plate or the cutting plate or the plunger.

Der Einfachheit halber wird der Ringzackenzylinder auf einem Querhaupt des Maschinenrahmens angeordnet, so dass eine zusätzliche Traverse entfällt. Damit ist die bewegte Masse bei einem Stösselhub wesentlich geringer, so dass der Energieaufwand pro Hub und das Gewicht der Maschine wesentlich kleiner gehalten werden kann. Es ist kein zusätzlicher Verbindungsrahmen (Traverse) erforderlich, so dass die Konstruktion wesentlich einfacher und günstiger wird.For the sake of simplicity, the ring-toothed cylinder is opened a crosshead of the machine frame arranged so that an additional traverse is not required. So that is moving Mass with a ram stroke much lower, so that the Energy consumption per stroke and the weight of the machine can be kept much smaller. It is not additional connecting frame (traverse) required, see above that the construction is much simpler and cheaper becomes.

Die Montagemöglichkeiten werden wesentlich verbessert und die Maschinenhöhe reduziert. The mounting options are significantly improved and the machine height is reduced.

Sollte es sich bei einem Eilgang der Maschine als notwenig erweisen, dass der Ölaustausch zwischen Ringzackenzylinder und Kompensationszylinder beschleunigt wird, kann über ein entsprechendes Logikventil noch ein Öltank zu der Verbindung dazugeschaltet werden, so dass eine kurzzeitig erforderliche hohe Ölmenge über das Logikventil vom Öltank angesaugt werden kann. Should it be necessary if the machine is moving at high speed prove that the oil exchange between ring-toothed cylinders and compensation cylinder can be accelerated via a corresponding logic valve an oil tank to the Connection to be switched on, so that a short time Required high oil volume via the logic valve from the oil tank can be sucked in.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie anhand der Zeichnung; diese zeigt in ihrer einzigen Figur einen Querschnitt durch eine erfindungsgemässe Vorrichtung zum Feinschneiden von Werkstücken aus einem Werkstoff, beispielsweise aus einem Blech 1. Dieses Blech 1 durchläuft einen Maschinenrahmen 2 zwischen einem Querhaupt 3 und einem Boden 4. Mit 5 und 6 sind Seitenwände gekennzeichnet.Further advantages, features and details of the invention result from the following description of a preferred embodiment and based on the Drawing; this shows one in her only figure Cross section through an inventive device for Fineblanking workpieces from one material, for example from a sheet 1. This sheet 1 passes through a machine frame 2 between a crosshead 3 and a bottom 4. With 5 and 6 side walls are marked.

Zwischen dem Querhaupt 3 und einem Stössel 7 ist ein Feinschneidwerkzeug 8 vorgesehen, wie es allgemein bekannt ist. Hierzu wird auf das Buch "Feinschneiden" Handbuch für die Praxis, Herausgeber: Feintool AG Lyss, 2. Auflage, 1977, Seite 15 bis 17 verwiesen.Between the crosshead 3 and a plunger 7 is a Fineblanking tool 8 is provided, as is generally known is. For this, refer to the book "Fineblanking" manual for the practice, publisher: Feintool AG Lyss, 2nd edition, 1977, pages 15 to 17.

Ein derartiges Feinschneidwerkzeug 8 weist einen Schneidstempel 9 auf, der in einer Pressplatte 10 geführt ist. Zum Blech 1 hin weist diese Pressplatte 10 eine Ringzacke 11 auf. Entgegengesetzt stützt sich die Pressplatte 10 gegen einen Ringzackenkolben 12 in einem Ringzackenzylinder 13 ab. Der Ringzackenzylinder 13 befindet sich in einem entsprechenden Gehäuse 14 auf dem Querhaupt 3, wobei der Ringzackenkolben 12 über eine Kolbenstange 15 und diverse, nicht näher gekennzeichnete Druckplatten und Stössel durch das Querhaupt 3 hindurch mit der Pressplatte 10 verbunden ist.Such a fineblanking tool 8 has one Cutting punch 9, which is guided in a press plate 10 is. This press plate 10 points toward the sheet 1 Ring point 11 on. The opposite is supported Press plate 10 against an annular ram piston 12 in one Ring-toothed cylinder 13 from. The ring-toothed cylinder 13 is located in a corresponding housing 14 on the Crosshead 3, the ring-shaped piston 12 via a Piston rod 15 and various, unspecified Pressure plates and ram through the crosshead 3 with the press plate 10 is connected.

An dem Stössel 7 ist dem Schneidstempel 9 ein Gegenhalter 16 zugeordnet, der auch als Auswerfer dienen kann. Die Hydraulik für die Druckbeaufschlagung dieses Gegenhalters 16 soll hier nicht näher beschrieben werden. Eine Beschreibung befindet sich im oben genannten Handbuch. On the ram 7, the cutting punch 9 is a counterholder 16 assigned, which can also serve as an ejector. The Hydraulics for pressurizing this counter bracket 16 will not be described in more detail here. A Description is in the above manual.

Der Gegenhalter 16 ist in einer Schneidplatte 17 geführt, wobei der Schneidstempel 9 das auszuschneidende Werkstück in diese Schneidplatte 17 hineindrückt, wobei der Gegenhalter 16 ausweicht.The counter holder 16 is guided in a cutting plate 17, the cutting punch 9 the workpiece to be cut presses into this insert 17, the Counterholder 16 evades.

Der Hub des Stössels 7 in Richtung des Doppelpfeiles 18 wird über zwei Hauptzylinder 19.1 und 19.2 bewirkt, in denen jeweils ein Kolben 20.1 und 20.2 geführt ist. Jeder Kolben 20.1 und 20.2 ist über eine Kolbenstange 21.1 und 21.2 fest mit dem Stössel 7 verbunden.The stroke of the plunger 7 in the direction of the double arrow 18 is effected via two master cylinders 19.1 and 19.2 in which are each guided by a piston 20.1 and 20.2. Everyone Piston 20.1 and 20.2 is via a piston rod 21.1 and 21.2 firmly connected to the plunger 7.

Erfindungsgemäss stützt sich der Stössel 7 jedoch auch gegen bevorzugt vier Kompensationszylinder 22 ab, wobei nachfolgend nur einer beschrieben ist. Im Kompensationszylinder 22 wird ein Kompensationskolben 23 geführt, der wiederum über eine Kolbenstange 24 fest mit dem Stössel 7 verbunden ist. Erfindungsgemäss besitzt der bzw. die Kompensationskolben 23 eine wirksame Querschnittsfläche, die derjenigen des Ringzackenkolbens 12 entspricht. Ferner sind der Ringzackenzylinder 13 und der Kompensationszylinder 22 über eine hydraulische Verbindung 25 miteinander gekoppelt. In diese hydraulische Verbindung 25 kann über eine weitere Verbindung 26 und ein Logikventil 27 ein nicht näher gezeigter Öltank eingeschaltet werden.According to the invention, the tappet 7 is also supported against preferably four compensation cylinders 22, whereby only one is described below. in the Compensation cylinder 22 becomes a compensation piston 23 performed, which in turn with a piston rod 24 with the plunger 7 is connected. According to the or the compensation piston 23 an effective Cross-sectional area that of that of the annular toothed piston 12th equivalent. Furthermore, the ring-toothed cylinder 13 and the Compensation cylinder 22 via a hydraulic connection 25 coupled together. In this hydraulic connection 25 can via a further connection 26 and a logic valve 27 an oil tank, not shown, can be switched on.

Auch die beiden Hauptzylinder 19.1 und 19.2 sind miteinander und über ein Ventil 28 mit einem nicht näher gezeigten Öltank verbunden.The two master cylinders 19.1 and 19.2 are also with each other and via a valve 28 with one not closer shown oil tank connected.

Die Funktionsweise der vorliegenden Erfindung ist folgende:The operation of the present invention is as follows:

Bei geöffnetem Werkzeug 8 wird zwischen den Schneidstempel 9 und die Schnneidplatte 17 bzw. die Pressplatte 10 und den Gegenhalter 16 ein Blech 1 eingeführt, aus dem ein Werkstück geschnitten werden soll.When the tool 8 is open, the cutting punch is between 9 and the cutting plate 17 or the pressing plate 10 and the Counterholder 16 introduced a sheet 1, from which a Workpiece to be cut.

Der Stössel 7 wird mittels der beiden Hauptzylinder 19.1 und 19.2 hochgefahren, wobei das Blech 1 zwischen Schneidplatte 17 und Pressplatte 10 eingeklemmt wird. Dabei drückt sich die Ringzacke 11 in das Blech 1 ein. Die Kräfte, die dabei vom Ringzackenzylinder 13 ausgehen, werden durch die Kompensationszylinder 22 neutralisiert, da deren Kolben gemeinsam die gleichen wirksame Querschnittsfläche aufweisen, wie der Ringzackenzylinderkolben 12.The plunger 7 is by means of the two master cylinders 19.1 and 19.2 ramped up, the sheet 1 between Insert 17 and press plate 10 is clamped. there the ring prong 11 is pressed into the sheet 1. The Forces emanating from the ring-toothed cylinder 13 are neutralized by the compensation cylinder 22 because whose pistons share the same effective Have cross-sectional area, such as Ring-toothed cylinder piston 12.

Bei einem weiteren Stösselhub drückt der Schneidstempel 9 das auszuschneidende Werkstück in die Schneidplatte 17, wobei der Gegenhalter 16 nachgibt.During a further ram stroke, the cutting punch 9 presses the workpiece to be cut into the cutting plate 17, the counter-holder 16 yields.

Nachdem das Werkstück aus dem Blech ausgeschnitten ist, öffnet sich die Maschine, und der Gegenhalter 16 kann das Werkstück aus der Schneidplatte 17 auswerfen.After the workpiece is cut out of the sheet, the machine opens, and the counter-holder 16 can Eject the workpiece from the insert 17.

Wird die Vorrichtung im Eilgang gefahren, besteht die Möglichkeit, dass über die Verbindung 25 nicht schnell genug ein Ölaustausch stattfindet. In diesem Fall kann eine kurzzeitig erforderliche, hohe Ölmenge über das Logikventil 28 vom Öltank her angesaugt werden.If the device is operated in rapid traverse, there is Possibility that connection 25 is not fast enough oil exchange takes place. In this case, a high oil quantity required for a short time via the logic valve 28 are sucked in from the oil tank.

Claims (8)

  1. Apparatus for finely cutting workpieces from a material (1), said apparatus having a pressing plate (10), which is provided with annular notch (11) and lies under the pressure of an annularly notched cylinder (13), and a punch (9) which is guided in the pressing plate (10) and has associated therewith, on a projection (7), a cutting plate (17) with counterholder (16) (ejector), characterised in that the projection (7) is supported against at least one compensating cylinder (22), which is hydraulically connected to the annularly notched cylinder (13).
  2. Apparatus according to claim 1, characterised in that four compensating cylinders (22) are provided.
  3. Apparatus according to claim 1 or 2, characterised in that a piston (23) is disposed in the compensating cylinder(s) (22) and is securedly connected to the projection (7) via a piston rod (24).
  4. Apparatus according to claim 3, characterised in that an effective cross-sectional area of the compensating piston(s) (23) is identical to an effective cross-sectional area of an annularly notched cylinder piston (12).
  5. Apparatus according to one of claims 1-4, characterised in that the annularly notched cylinder (13) is disposed on an upper cross-piece member (3) of a machine frame (2).
  6. Apparatus according to one of claims 1-5, characterised in that the projection (7) is still supported against at least one main cylinder (19.1, 19.2).
  7. Apparatus according to claim 6, characterised in that a piston (20.1, 20.2) of the main cylinder (19.1, 19.2) has an effective cross-sectional area which is greater than that of the compensating piston(s) (23).
  8. Apparatus according to one of claims 1-7, characterised in that the hydraulic connection (25) between compensating cylinder (22) and annularly notched cylinder (13) also has a connection (26) to an oil tank via a logic valve (27).
EP00947859A 1999-06-25 2000-06-20 Device for finely cutting workpieces from a material Expired - Lifetime EP1189745B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19929163A DE19929163C1 (en) 1999-06-25 1999-06-25 Device for fine cutting workpieces from a sheet metal
DE19929163 1999-06-25
PCT/EP2000/005681 WO2001000396A2 (en) 1999-06-25 2000-06-20 Device for finely cutting workpieces from a material

Publications (2)

Publication Number Publication Date
EP1189745A2 EP1189745A2 (en) 2002-03-27
EP1189745B1 true EP1189745B1 (en) 2003-02-26

Family

ID=7912526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00947859A Expired - Lifetime EP1189745B1 (en) 1999-06-25 2000-06-20 Device for finely cutting workpieces from a material

Country Status (8)

Country Link
US (1) US7806031B1 (en)
EP (1) EP1189745B1 (en)
JP (1) JP2003503208A (en)
CN (1) CN1455712A (en)
AT (1) ATE233176T1 (en)
AU (1) AU6151000A (en)
DE (2) DE19929163C1 (en)
WO (1) WO2001000396A2 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10005023C2 (en) * 2000-02-04 2002-11-21 Feintool Internat Holding Ag L Precision cutting press
DE102004006126B4 (en) * 2004-02-07 2006-12-28 Horst Baltschun Press with locked ram
CN100382912C (en) * 2004-03-26 2008-04-23 鸿富锦精密工业（深圳）有限公司 Metal plate punching process
JP4899864B2 (en) 2004-04-09 2012-03-21 トヨタ紡織株式会社 Shearing device
DE102004049149A1 (en) 2004-10-07 2006-04-13 Feintool International Management Ag Method and device for producing and / or processing parts
DK2042249T3 (en) * 2007-09-26 2010-06-21 Feintool Ip Ag Method and device for making punching blanks with almost smooth and enlarged functional surface
JP2011045899A (en) * 2009-08-26 2011-03-10 Showa Seiko Kk Precise plastic working method and precise plastic working device
ES2372377B2 (en) 2010-06-25 2012-10-25 Fineblanking Press Systems, S.L. PRESS PRINT.
CN101890450A (en) * 2010-06-30 2010-11-24 上海理工大学 Numerical control hydromechanical deep drawing hydraulic press
CN102107242A (en) * 2010-12-07 2011-06-29 苏州和林精密科技有限公司 Material falling prevention-type stamping equipment
EP2608299B1 (en) * 2011-12-22 2014-04-09 Feintool Intellectual Property AG Device and method for manufacturing metallic bipolar panels
DE102013015180A1 (en) * 2013-09-11 2015-03-12 Webo Werkzeugbau Oberschwaben Gmbh Method and device for precision cutting of workpieces in a press
US10016803B2 (en) * 2014-05-09 2018-07-10 Honda Motor Co., Ltd. Blanking die and method of blanking sheet metal therewith
CN104722633B (en) * 2015-03-16 2017-05-31 天津太平洋超高压设备有限公司 Shallow corrugated metal sheet pressure rushes formula hydraulic press
DE102015016102A1 (en) * 2015-12-11 2017-06-14 Schuler Pressen Gmbh Precision cutting press
CN107127821A (en) * 2017-05-26 2017-09-05 新昌县奇鹏自动化设备有限公司 A kind of double mode puncher of hydraulic control
CN109366549A (en) * 2018-10-18 2019-02-22 湖州锐舰机械科技有限公司 A kind of automobile sealed bar processing unit
EP3736061B1 (en) * 2019-05-06 2024-08-07 Lapmaster Wolters GmbH Fine blanking system and method for operating the same
DE102019124366A1 (en) * 2019-09-11 2021-03-11 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Setup device and method for setting up a tool for punching or reshaping plate-shaped materials
US11506559B2 (en) * 2020-12-28 2022-11-22 Metal Industries Research&Development Centre Service life testing device for pressure sensor and testing method using same

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2092092A (en) * 1932-12-01 1937-09-07 Sinclair Harold Power press tool or the like
US3570343A (en) * 1968-10-18 1971-03-16 Dro Systems Inc Di Structure for fine blanking
CH491695A (en) * 1968-11-21 1970-06-15 Aida Tekkosho Kk Fine-cut press
US3673908A (en) * 1971-01-22 1972-07-04 Intern Fineblanking Corp Quick-change tooling for fineblanking presses
CH551812A (en) * 1972-03-03 1974-07-31 Hydrel Ag FINE CUTTING PRESS.
JPS5310309B2 (en) * 1972-03-06 1978-04-12
US3827328A (en) * 1972-12-26 1974-08-06 Greenerd Press & Machine Co In Control system for hydraulic presses
AU467285B2 (en) * 1973-05-10 1975-11-10 Hydrel Ag Precision stamping press
DE2739340A1 (en) * 1977-09-01 1979-03-15 Smg Sueddeutsche Maschinenbau HYDRAULICALLY DRIVEN PRESS
JPS5945450B2 (en) * 1981-04-20 1984-11-06 猛 大島 Fine blanking processing equipment using a general-purpose press machine
JPS60244500A (en) * 1984-05-18 1985-12-04 Aida Eng Ltd Liquid pressure press which suppresses noise and oscillation
CH669748A5 (en) * 1984-11-28 1989-04-14 Feintool Int Holding
NL8902274A (en) * 1989-09-12 1991-04-02 Brouwer & Co Machine PUNCHING MACHINE.
JP3319786B2 (en) * 1992-09-02 2002-09-03 株式会社小松製作所 Press breakthrough shock absorber and control method thereof
DE4338197C1 (en) * 1993-11-09 1995-01-19 Schmidt Maschinenbau Gmbh Cutting tool
JP2548508B2 (en) * 1993-11-17 1996-10-30 日清紡績株式会社 Hydraulic press equipment
FI100648B (en) * 1995-12-14 1998-01-30 Balaxman Oy punching
US5749279A (en) * 1996-03-20 1998-05-12 General Motors Corporation Hydraulic punch actuator with centering apparatus
DE19642635A1 (en) * 1996-03-28 1997-10-02 Horst Baltschun Hydraulically or mechanically driven ram of fine-blanking press

Also Published As

Publication number Publication date
CN1455712A (en) 2003-11-12
WO2001000396A3 (en) 2001-05-31
DE50001335D1 (en) 2003-04-03
EP1189745A2 (en) 2002-03-27
AU6151000A (en) 2001-01-31
ATE233176T1 (en) 2003-03-15
US7806031B1 (en) 2010-10-05
DE19929163C1 (en) 2001-01-18
WO2001000396A2 (en) 2001-01-04
JP2003503208A (en) 2003-01-28

Similar Documents

Publication Publication Date Title
EP1189745B1 (en) Device for finely cutting workpieces from a material
EP0418779B1 (en) Method for manufacture of workpieces by punching, in particular in a precision counter punching tool
DE102007017595B3 (en) Precision cutting press for producing precision cut parts of metal strip, has cross bars that are pressed against flange and plunger by force of respective cylinders during power stroke and are long such that bars support tool at pins
DE2344416C2 (en) Press brake
DE19641411A1 (en) Hydraulic deep-drawing device
WO2005075183A1 (en) Press comprising a locked slide
DE102009017624A1 (en) Two-way operative deep drawing press, has drive downwardly pressing cross bar such that bar implements working stroke synchronously, short-stroke cylinders do not implement body stroke and working force is not reduced
EP1252010B1 (en) Press
EP3423210B1 (en) Forging press and method for forging a workpiece in a forging press
DE7736038U1 (en) DEVICE FOR PUNCHING AND DEEP DRAWING OF WORKPIECES FROM SHEET METAL OR DGL.
DE2748462A1 (en) PRESS FOR THE PRODUCTION OF CERAMIC OR FIRE-RESISTANT TILES OR TILES
EP1893401B1 (en) Device for stamping and/or shaping sheet metal, wires and similar
EP0417754B1 (en) Mechanical or hydraulic press with drawing or pressing station for multiple stage press
DE19962607B4 (en) Tool cassette with resilient die
DE3935498C3 (en) Switchable press device for machining workpieces
DE102004006126A1 (en) Hydraulic press has press ram locked to lower belt after advancing stroke by piston rods of hydraulic piston-cylinder units
DE10215003A1 (en) Hydraulic press used for deep drawing operations has press body connected to two columns in each of three piston and cylinder assemblies
WO2005021253A2 (en) Hydraulic press and deep-drawing press
DE4122128A1 (en) Hydro-elastic deep drawing of sheet metal workpieces - uses system which automatically actuates punch mounted in baseplate, with metal blank being gripped between hold-down plates
EP0865843A1 (en) Drawing device for a drawing press
DE19611611A1 (en) Machine press
EP0417753A2 (en) Mechanical or hydraulic press with drawing or pressing station for multiple stage press
EP1344585B1 (en) Hydroelastic deep drawing device
DE19607257C2 (en) Hydraulic sheet metal press
DE3915263C2 (en) Screw press

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20011221

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

Kind code of ref document: A2

Designated state(s): AT DE FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50001335

Country of ref document: DE

Date of ref document: 20030403

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20030417

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20030226

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 1189745E

Country of ref document: IE

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20031127

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20110630

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20110622

Year of fee payment: 12

Ref country code: GB

Payment date: 20110620

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110831

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20110624

Year of fee payment: 12

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 233176

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120620

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120620

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120620

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130228

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50001335

Country of ref document: DE

Effective date: 20130101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130101

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120702

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120620

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120620