EP2140954B1 - Method and device for manufacturing finely cut sections from a strip of material - Google Patents

Method and device for manufacturing finely cut sections from a strip of material Download PDF

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Publication number
EP2140954B1
EP2140954B1 EP20080012011 EP08012011A EP2140954B1 EP 2140954 B1 EP2140954 B1 EP 2140954B1 EP 20080012011 EP20080012011 EP 20080012011 EP 08012011 A EP08012011 A EP 08012011A EP 2140954 B1 EP2140954 B1 EP 2140954B1
Authority
EP
European Patent Office
Prior art keywords
cutting
die
material strip
fine blanking
strip
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.)
Not-in-force
Application number
EP20080012011
Other languages
German (de)
French (fr)
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EP2140954A1 (en
Inventor
Willi Dipl.Ing. Grimm
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 Intellectual Property AG
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Feintool Intellectual Property 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
Priority to AT08012011T priority Critical patent/ATE524251T1/en
Application filed by Feintool Intellectual Property AG filed Critical Feintool Intellectual Property AG
Priority to EP20080012011 priority patent/EP2140954B1/en
Priority to EP20090772089 priority patent/EP2303488B1/en
Priority to JP2011515166A priority patent/JP5698125B2/en
Priority to PCT/EP2009/004364 priority patent/WO2010000389A1/en
Priority to AT09772089T priority patent/ATE544541T1/en
Publication of EP2140954A1 publication Critical patent/EP2140954A1/en
Priority to US12/977,733 priority patent/US8910549B2/en
Application granted granted Critical
Publication of EP2140954B1 publication Critical patent/EP2140954B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work
    • 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
    • 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
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
    • 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
    • Y10T83/04—Processes
    • Y10T83/0448—With subsequent handling [i.e., of product]
    • Y10T83/0467—By separating products from each other
    • 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
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0529—Blanking and cutting
    • 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
    • Y10T83/04—Processes
    • Y10T83/06—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
    • Y10T83/202—With product handling means
    • Y10T83/2074—Including means to divert one portion of product from another
    • Y10T83/2079—Remaining or re-inserted product portion from base material

Definitions

  • the invention relates to a method for producing fine blanking parts from a strip of material in a fine blanking tool, in which a strip of material is clamped between two tool parts or between an upper press or guide plate and a lower cutting plate and an upper and lower cutting punch and the cutting in cooperation with the upper wherein the cutting is carried out as an unfinished complete cut along the circumference of the fine blanking part with a specially shaped cutting edge of the cutting punch and / or cutting plate so that the fine blanking part at partial connecting parts on the material strip approximately at its upper or lower level in an altitude the material strip initially remains materially bonded and then moved together with the strip of material in the direction of the strip to a subsequent demolding stage (see JP 11309522 A ,
  • the invention further relates to an apparatus for producing fine cutting parts of a strip of material, with at least one cutting plate and a cutting punch for cutting the fine cutting part of a strip of material. ).
  • From the DE 10 2004 032 826 A1 is a method for producing stamped parts in a tool, in particular fine blanking tool, by means of at least one stamp, with which the stamped part is pushed out of a strip of material known.
  • the punched part is pushed from the material strip of this after being pressed out to a discharge.
  • the punch cooperates with a counter-holder in an insert when pressing out the stamped part, wherein the counter-holder the stamped part is lifted when opening the tool to the surface of the insert and the strip of material from the insert.
  • the strip of material is lifted by the cutting plate at a defined distance which corresponds at least to the thickness of the stamped parts.
  • the present invention seeks to improve a method and apparatus for producing fineblanked parts such that a vertical relative movement between strip of material and fineblanking part is completely avoided, reduces the necessary opening and closing of the device and a simple structure the device is a use on high-speed presses possible, the fineblanking parts suffer no damage to the functional surfaces.
  • the solution according to the invention is characterized in that, for cutting, a die insert which can be inserted in a receptacle of the insert and a punch used with partially formed bevels along its cutting edges are used, and in the demolding step the partial bond parts are separated from the strip of material without pushing back
  • the fine blanking part and the material strip are demolded downwards by a shear force-free breaking perpendicular to the running direction of the material strip, wherein the demoulded fine blanking part is removed through a chute in the cutting plate.
  • the fine blanking part is cut to about 80 to 90% of its circumference completely from the strip of material.
  • the fineblanking part is held on the material strip by at least one, in particular two or more, connecting part (s). These connection parts are to be arranged so that they do not come to lie in the area of the important functional surfaces of the fineblanking part during later breaking.
  • connection points between the material strip and the fineblanking part are produced by the special shaping at the cutting edges of cutting punches and / or cutting plates in conjunction with the kinematics of the fineblanking press used, which are independent of the Thick variations of the material strip always moves in the same vertical position of the two decisive cutting edges.
  • a recording of the insert at least one Matrizendon is inserted interchangeable and associated with a die insert opposite cutting punch with partially shaped chamfers along their cutting edges.
  • the die insert is kept evenly biased along its circumference in the receptacle and projects beyond the base plate of the insert such that the die insert punctures the strip of material when closing the device on the punch, i. predetermined locations, can clamp without the base plate can engage.
  • the ready-held enemy cutting oil not only distributes the areal pressure unintentionally and then is no longer available to a sufficient extent when cutting.
  • the concentration of the fine cutting specific clamping forces on the die inserts continues to have the Advantage that the production of smooth cut surfaces on fineblanking part is supported.
  • the demoulding process by breaking the connecting parts between the fineblank part and the material strip in the demoulding stage must ensure that no vertical shear forces are transmitted to the narrow connecting parts.
  • the inventive device is simple and compact and has the great advantage that the required way to open and close the upper and lower part is significantly reduced. This is achieved in that in a receiving space of the cutting plate is arranged under a uniform bias force-locking die insert is associated with the cutting punch, wherein the cutting edges of the die insert and / or the cutting punch by a partially shaped barrel for incomplete cutting of Feinschneidteils from the strip of material are interrupted, such that the fine blanking part and the strip of material by partial connecting parts are materially interconnected after cutting, and that the die insert relative to the cutting plate has a vertical offset for partial clamping of the strip of material on a press or guide plate, and that in the cutting plate Downshaft for discharging the separated by a shear-free breaking off the strip of material fine cutting parts is provided vertically downwards to the direction of the strip of material.
  • the special shaping of the cutting edges of die insert and / or punch consists of a partially shaped chamfer, which can vary in length and / or three and / or inclination and interrupts the cutting edge of Matrizenmony and / or cutting punch accordingly, so that the fine cutting part of the strip of material not is completely cut and remains firmly bonded to partial connecting parts on the material strip approximately at its upper or lower level in an altitude relative to the material strip.
  • the space required for the transport of the composite of strips of material and fine blanking space within the interior of the device is achieved in that the die insert relative to the cutting plate has a height offset, which is dimensioned so that the required space for the material thickness downwardly protruding, however is still ensured on the strip of material fineblanking parts, so that the fineblanking parts can not be pushed back in the vertical direction or otherwise moved.
  • the opposite to the cutting plate protruding die inserts allow for clamping the strip of material and a concentration of fine cutting specific clamping forces around the cutting geometry around, which provides the advantage that the quality of the interfaces on Feinschneidteil can be improved.
  • the die insert is interchangeable and can also be used several times after regrinding.
  • the one by the Regrind resulting height or material loss on Matrizenreheat can be compensated by placed in the receiving space under the die insert documents of different thickness very easily, allows flexible and cost-effective spare parts inventory with a high material utilization of Matrizenein algorithms.
  • Another advantage is that the lubricant stored on the inlet side in lubricant pockets remains in the pockets when the material strip is clamped because only a selective clamping of the material strip around the cutting geometry takes place and the previously usual planar clamping of the material strip between upper and lower surfaces. and lower part of the device is eliminated.
  • the inventive method and the device according to the invention are characterized by small opening and closing paths, so that high cycle rates and high output performance can be achieved, whereby the use of high-speed presses is made possible.
  • Fig. 1a to 1d a simplified schematic representation of the sequence of the method according to the invention.
  • Fig. 2 a sectional view of the design of the connecting portion between fine blank and material strips on the one hand and the design of die insert and cutting punch on the other hand and
  • fine blanking parts 1 are to be produced from a strip of material 2.
  • the Fig. 1a shows the device according to the invention with inserted strips of material 2 in the open state of the upper tool part 3 and lower tool part 4.
  • the lower tool part 4 includes a cutting plate 5, which has a receiving space 6 for receiving a die insert 7.
  • the Matrizenrus 7 is in the Fig. 1a shown as a simple tubular insert, but may also have other more complicated shapes. At its periphery of the die insert 7 is held for example by a screw, not shown in the cutting plate 5 under uniform bias, so that the forces occurring during cutting can be safely absorbed by die insert 7. The Matrizenrus 7 is thus removed from the receiving space 6 of the cutting plate 5 and can be reground accordingly if necessary.
  • the height loss of the die insert 7 compensated as a result of regrinding. It documents 8 are kept at different thicknesses, so that depending on the size of the regrinding different height losses can be compensated and the die insert 7 reaches the original height again.
  • the die insert 7 has a height offset H, so that the die insert 7 is significantly above the level of the cutting plate 5.
  • This height offset H is dimensioned such that it corresponds approximately to the material thickness of the material strip 2.
  • the upper tool part 3 and lower tool part 4 of the device according to the invention are opened so far that the imported material strip with the tailed fine cutting part 1 has sufficient space in the direction R of the material strip 2.
  • a chute 9 for discharging the fine cutting parts 1 is arranged approximately vertically downwards to the direction R of the material strip 2.
  • the die insert 7 is a punch 11 in the upper tool part 3 for cutting the fine blanking part 1 from the strip of material 2 and the chute 9 associated with an ejector 12.
  • the upper tool part 3 includes a press or guide plate 10 in which at least one cutting punch 11 and at least one ejector 12 are guided.
  • Fig. 1b shows the closed upper tool part 3 and lower tool part 4 with between die insert 7 and
  • the clamping plate is clamped around the cutting geometry, so that the fine cutting specific clamping forces are concentrated on a narrow range. This supports the production of smooth-cut separating surfaces on the fineblanking part 1.
  • lubrication pockets arranged in the cutting plate can be dispensed with and the lubricant supply on the material strip is available exclusively for the fineblanking process.
  • Fig. 1c shows the step of the method according to the invention, in which the cutting punch 5 has performed an incomplete complete cut in the strip of material 2 and the fine part cutting part 1 is cut to about 80 to 90% of its circumference.
  • Fig. 2 Reference is made, in which the fine blanking part 1 remains connected to, for example, a narrow connecting portion 14 with the material strip 2 cohesively after the cut.
  • the incomplete complete cut is achieved by a corresponding preparation of the cutting edges 15 of die insert 7 and / or cutting punch 11 in conjunction with the kinematics of the fine blanking press used, which always moves independently of the thickness variations of the material strip in the same vertical position of the cutting edges of die insert 7 and cutting punch 11 , reached.
  • the cutting edge 15 of the die insert 7 can be broken, for example, along its edge profile by one or more chamfers 16.
  • the width and / or length and / or inclination of these bevels vary. This is aimed according to the size, geometry and after their distribution on the die insert 7 and / or cutting punch 11 and the thickness and quality of the material strip and the allowable shape tolerances radially and axially at the connection points, the fine blanking part 1, which by the dimensions h and i am Die insert 7 and the dimensions 1 and k is illustrated on the cutting punch. This also applies to the Einschertiefe T of the cutting punch 11 in the die insert. 7
  • the ejector 12 of the demolding stage has separated the connecting parts 14 between the fineblank 1 and strips of material 2 shearing force and fineblanking part 1 is discharged through the chute 9 perpendicular to the direction R of the strip of material 2 down.
  • the connecting parts 14 are broken by the ejector 12 largely free of damage.
  • the connecting parts 14 are distributed on the circumference of the fineblanking part 1 that they do not lie on the functional surfaces of the fineblanking part.
  • the strip of material 1 forms after the cutting process with the tailed fine cutting part 1 a composite that can be transported without any relative movement in the vertical direction with open inventive device in the direction R to Entformungscut, because by the relative to the die insert 7 deeper placed cutting plate 5 sufficient space which is about the thickness of the strip of material 2 downwardly protruding fine cutting 1 is present.
  • This is associated with the very great advantage that the necessary opening path at the device according to the invention can be kept so small that the cycle numbers can be massively increased. This allows the use of high speed presses.

Abstract

The method involves cutting an incomplete compound die along the circumference of a fine-blanked part (1) with a specially shaped cutting edge of a cutting punch (11) and/or a cutting plate (5) such that the fine-blanked part initially remains bonded to a partial connecting part on a material strip (2). The fine-blanked part is moved together with the strip in a running direction (R) of the strip to a subsequent removal stage, in which the fine-blanked part and the strip are separated from each other. An independent claim is also included for a device for producing a fine-blanked part from a material strip.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Feinschneidteilen aus einem Materialstreifen in einem Feinschneidwerkzeug, bei dem ein Materialstreifen zwischen zwei Werkzeugteilen bzw. zwischen einer oberen Pressoder Führungsplatte und einer unteren Schneidplatte sowie einem oberen und unteren Schneidstempel eingeklemmt wird und das Schneiden im Zusammenwirken mit den oberen und unteren Schneidstempel erfolgt wobei das Schneiden als ein unvollendeter Komplettschnitt entlang des Umfangs des Feinschneidteils mit einer speziell geformten Schneidkante von Schneidstempel und/oder Schneidplatte so durchgeführt wird, dass das Feinschneidteil an partiellen Verbindungspartien am Materialstreifen etwa an dessen oberen oder unteren Ebene in einer Höhenlage gegenüber dem Materialstreifen zunächst stoffschlüssig angebunden bleibt und dann zusammen mit dem Materialstreifen in Laufrichtung des Streifens bis zu einer nachfolgenden Entformungsstufe bewegt wird (siehe JP 11309522 A .The invention relates to a method for producing fine blanking parts from a strip of material in a fine blanking tool, in which a strip of material is clamped between two tool parts or between an upper press or guide plate and a lower cutting plate and an upper and lower cutting punch and the cutting in cooperation with the upper wherein the cutting is carried out as an unfinished complete cut along the circumference of the fine blanking part with a specially shaped cutting edge of the cutting punch and / or cutting plate so that the fine blanking part at partial connecting parts on the material strip approximately at its upper or lower level in an altitude the material strip initially remains materially bonded and then moved together with the strip of material in the direction of the strip to a subsequent demolding stage (see JP 11309522 A ,

Die Erfindung betrifft ferner eine Vorrichtung zum Herstellen von Feinschneidteilen aus einem Materialstreifen, mit mindestens einer Schneidplatte und einem Schneide stempel zum Ausschneiden des Feinschneidteils aus einem Materialstreifen.
).The invention further relates to an apparatus for producing fine cutting parts of a strip of material, with at least one cutting plate and a cutting punch for cutting the fine cutting part of a strip of material.
).

Stand der TechnikState of the art

Aus der DE 10 2004 032 826 A1 ist ein Verfahren zum Herstellen von Stanzteilen in einem Werkzeug, insbesondere Feinschneidwerkzeug, mittels zumindest einem Stempel, mit dem das Stanzteil aus einem Materialstreifen herausgedrückt wird, bekannt. Bei diesem bekannten Verfahren wird das Stanzteil nach dem Herausdrücken aus dem Materialstreifen von diesem zu einem Austrag geschoben. Der Stempel wirkt mit einem Gegenhalter in einer Schneidplatte beim Herausdrücken des Stanzteils zusammen, wobei der Gegenhalter das Stanzteil beim Öffnen des Werkzeuges bis zur Oberfläche der Schneidplatte und der Materialstreifen von der Schneidplatte angehoben wird. Der Materialstreifen wird von der Schneidplatte in einem definierten Abstand angehoben, der zumindest der Dicke der Stanzteile entspricht.From the DE 10 2004 032 826 A1 is a method for producing stamped parts in a tool, in particular fine blanking tool, by means of at least one stamp, with which the stamped part is pushed out of a strip of material known. In this known method, the punched part is pushed from the material strip of this after being pressed out to a discharge. The punch cooperates with a counter-holder in an insert when pressing out the stamped part, wherein the counter-holder the stamped part is lifted when opening the tool to the surface of the insert and the strip of material from the insert. The strip of material is lifted by the cutting plate at a defined distance which corresponds at least to the thickness of the stamped parts.

Zwar vermeidet dieser bekannte Stand der Technik das für Feinschneidteile nachteilige Zurückdrücken des Feinschneidteils in den Materialstreifen, doch wird dieser Vorteil durch Relativbewegungen innerhalb des Werkzeuginnenraums senkrecht zur Laufrichtung des Materialstreifens erkauft, was ein vollständiges Öffnen des Werkzeugs erfordert und zugleich den Aufbau des Werkzeugs verkompliziert. Das vollständige Öffnen des Werkzeugs verlangt einen größeren Öffnungsweg, wodurch die Anzahl der Pressenhübe beschränkt wird. Dieser bekannte Stand der Technik kann daher nicht auf Hochgeschwindigkeitspressen eingesetzt werden.Although this known prior art avoids the fine blanking parts disadvantageous pushing back the fine blanking in the strip of material, but this advantage is purchased by relative movements within the tool cavity perpendicular to the direction of the strip of material, which requires a complete opening of the tool and at the same time complicates the structure of the tool. Full opening of the tool requires a larger opening travel, which limits the number of press strokes. Therefore, this prior art can not be used on high-speed presses.

Andere bekannte Lösungen führen die Stanzteile durch Vereinzelungsvorrichtungen (siehe DE 27 48 228 A1 ) oder Ausblasen ab. Oftmals wird das Stanzteil wieder in den Materialstreifen zurückgedrückt und mit dem Materialstreifen ausgetragen. Ein solches Zurückdrücken hat aber den Nachteil, dass die durch das Feinschneiden erreichte hohe Schnittqualität erheblich verschlechtert wird. Die Rauheit der glattgeschnittenen Funktionsflächen und deren Toleranzgenauigkeit erleiden durch das Zurückdrücken entgegen der ursprünglichen Schnittrichtung und durch das Ausdrücken erhebliche Qualitätseinbußen.Other known solutions carry the stampings by separating devices (see DE 27 48 228 A1 ) or blowing off. Often the stamped part is pushed back into the strip of material and discharged with the strip of material. However, such a back pressure has the disadvantage that the high cut quality achieved by fine blanking is considerably worsened. The roughness of the smooth-cut functional surfaces and their tolerance accuracy suffer from the back pressure against the original cutting direction and by expressing significant quality losses.

Aufgabenstellungtask

Bei diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zum Herstellen von Feinschneidteilen derart zu verbessern, dass eine vertikale Relativbewegung zwischen Materialstreifen und Feinschneidteil völlig vermieden wird, der notwendige Öffnungs- und Schließweg der Vorrichtung reduziert und bei einfachem Aufbau der Vorrichtung ein Einsatz auf Hochgeschwindigkeitspressen möglich wird, wobei die Feinschneidteile keine Beschädigungen an den Funktionsflächen erleiden.In this prior art, the present invention seeks to improve a method and apparatus for producing fineblanked parts such that a vertical relative movement between strip of material and fineblanking part is completely avoided, reduces the necessary opening and closing of the device and a simple structure the device is a use on high-speed presses possible, the fineblanking parts suffer no damage to the functional surfaces.

Diese Aufgabe wird durch ein Verfahren der eingangs genannten Gattung mit den Merkmalen des Anspruchs 1 und durch eine Vorrichtung mit den Merkmalen des Anspruchs 9 gelöst.This object is achieved by a method of the type mentioned with the features of claim 1 and by a device having the features of claim 9.

Vorteilhafte Ausgestaltungen des Verfahrens und der Vorrichtung sind den Unteransprüchen entnehmbar.Advantageous embodiments of the method and the device are the dependent claims.

Die erfindungsgemäße Lösung zeichnet sich dadurch aus, dass zum Schneiden ein in eine Aufnahme der Schneidplatte einsetzbarer Matrizeinsatz und ein dem Matrizeneinsatz zugeordneter Schneidstempel mit partiell ausgeformten Fasen entlang ihrer Schneidkanten verwendet werden, und dass in der Entformungsstufe die partiellen Verbindungspartien vom Materialstreifen ohne ein Zurückdrücken voneinander getrennt werden wobei das Feinschneidteil und der Materialstreifen durch ein scherkraftfreies Ausbrechen senkrecht zur Laufrichtung des Materialstreifens nach unten entformt werden, wobei das entformte Feinschneidteil durch einen Fallschacht in der Schneidplatte abgeführt wird.The solution according to the invention is characterized in that, for cutting, a die insert which can be inserted in a receptacle of the insert and a punch used with partially formed bevels along its cutting edges are used, and in the demolding step the partial bond parts are separated from the strip of material without pushing back The fine blanking part and the material strip are demolded downwards by a shear force-free breaking perpendicular to the running direction of the material strip, wherein the demoulded fine blanking part is removed through a chute in the cutting plate.

Nach dem erfindungsgemäßen Verfahren wird das Feinschneidteil zu etwa 80 bis 90% seines Umfanges komplett aus dem Materialstreifen ausgeschnitten. Es bestehen nur noch einzelne Verbindungsbereiche oder -punkte zwischen dem Feinschneidteil und dem Materialstreifen.
Das Feinschneidteil wird nach dem unvollendeten Komplettschnitt am Materialstreifen durch mindestens eine, insbesondere zwei oder mehrere, Verbindungspartie(n) gehalten. Diese Verbindungspartien sind dabei so anzuordnen, dass sie beim späteren Ausbrechen nicht in den Bereich der wichtigen Funktionsflächen des Feinschneidteils zu liegen kommen.According to the method of the invention, the fine blanking part is cut to about 80 to 90% of its circumference completely from the strip of material. There are only individual connection areas or points between the fine blank and the strip of material.
After the unfinished complete cut, the fineblanking part is held on the material strip by at least one, in particular two or more, connecting part (s). These connection parts are to be arranged so that they do not come to lie in the area of the important functional surfaces of the fineblanking part during later breaking.

Diese Verbindungspunkte zwischen Materialstreifen und Feinschneidteil entstehen durch die spezielle Formgebung an den Schneidkanten von Schneidstempel und/oder Schneidplatten in Verbindung mit der Kinematik der eingesetzten Feinschneidpresse, welche unabhängig von den Dickenschwankungen des Materialstreifens immer in dieselbe vertikale Position der beiden maßgebenden Schneidkanten fährt.These connection points between the material strip and the fineblanking part are produced by the special shaping at the cutting edges of cutting punches and / or cutting plates in conjunction with the kinematics of the fineblanking press used, which are independent of the Thick variations of the material strip always moves in the same vertical position of the two decisive cutting edges.

Tn eine Aufnahme der Schneidplatte ist mindestens ein Matrizeneinsatz austauschbar eingesetzt und ein dem Matrizeneinsatz gegenüberliegender Schneidstempel mit partiell ausgeformten Fasen entlang ihrer Schneidkanten zugeordnet.
Dies hat den außerordentlichen Vorteil, dass der Matrizeneinsatz durch ein stirnseitiges Nachschleifen mehrfach verwendbar ist, wobei der durch das Nachschleifen entstehende Höhen- bzw. Materialverlust des Matrizeneinsatzes durch eine oder mehrere in die Aufnahme eingesetzte Unterlagen leicht zu kompensieren ist, was wirtschaftliche Vorteile in der Ersatzbewirtschaftung mit sich bringt.Tn a recording of the insert at least one Matrizeneinsatz is inserted interchangeable and associated with a die insert opposite cutting punch with partially shaped chamfers along their cutting edges.
This has the extraordinary advantage that the Matrizeneinsatz is reusable by a front-side regrinding, the resulting by the regrinding height or material loss of Matrizeneinsatzes is easily compensated by one or more used in the recording records, which has economic benefits in the replacement management brings with it.

Der Matrizeneinsatz wird entlang seines Umfanges in der Aufnahme gleichmäßig vorgespannt gehalten und überragt die Grundplatte der Schneidplatte derart, dass der Matrizeneinsatz punktuell den Materialstreifen beim Schließen der Vorrichtung am Stempel, d.h. vorbestimmten Stellen, festklemmen kann, ohne dass die Grundplatte zum Eingriff gelangen kann. Mit anderen Worten es wird das bisher übliche großflächige Klemmen des Materialstreifens zwischen Ober- und Unterteil vermieden. Dies hat den weiteren Vorteil, dass das auf dem bereitgehaltene bereitgehaltene Feindschneidöl nicht nur das flächige Anpressen ungewollt verteilt wird und dann nicht mehr in ausreichendem Masse beim Schneiden zur Verfügung steht.The die insert is kept evenly biased along its circumference in the receptacle and projects beyond the base plate of the insert such that the die insert punctures the strip of material when closing the device on the punch, i. predetermined locations, can clamp without the base plate can engage. In other words, it is the hitherto conventional large-scale clamping of the material strip between the upper and lower part avoided. This has the further advantage that the ready-held enemy cutting oil not only distributes the areal pressure unintentionally and then is no longer available to a sufficient extent when cutting.

Die Konzentration der feinschneidspezifischen Klemmkräfte auf die Matrizeneinsätze hat weiterhin den Vorteil, dass die Erzeugung glattgeschnittener Trennflächen am Feinschneidteil unterstützt wird.The concentration of the fine cutting specific clamping forces on the die inserts continues to have the Advantage that the production of smooth cut surfaces on fineblanking part is supported.

Der Entformungsvorgang durch Ausbrechen der Verbindungspartien zwischen Feinschneidteil und Materialstreifen in der Entformungsstufe muss sicherstellen, dass keine vertikalen Scherkräfte auf die schmalen Verbindungspartien übertragen werden.The demoulding process by breaking the connecting parts between the fineblank part and the material strip in the demoulding stage must ensure that no vertical shear forces are transmitted to the narrow connecting parts.

Die erfindungsgemäße Vorrichtung ist einfach und kompakt aufgebaut und hat den großen Vorteil, dass der erforderliche Weg zum öffnen und Schließen von Ober- und Unterteil erheblich verringert wird. Dies wird dadurch erreicht, dass in einem Aufnahmeraum der Schneidplatte ein unter gleichmäßiger Vorspannung kraftsschlüssig gehaltener Matrizeneinsatz angeordnet ist, dem der Schneidstempel zugeordnet ist, wobei die Schneidkanten des Matrizeneinsatzes und/oder des Schneidstempels durch eine partiell ausgeformte Fass zum unvollständigen Ausschneiden des Feinschneidteils aus dem Materialstreifen unterbrochen sind, derart, dass das Feinschneidteil und der Materialstreifen durch partielle Verbindungspartien stoffschlüssig nach dem Schneiden miteinander verbunden sind, und dass der Matrizeneinsatz gegenüber der Schneidplatte einen Höhenversatz zum partiellen Klemmen des Materialstreifens an einer Press-oder Führungsplatte aufweist, und dass in der Schneidplatte ein Fallschacht zum Abführen der durch ein scherkraftfreies Ausbrechen vom Materialstreifen abgetrennten Feinschneidteile senkrecht nach unten zur Laufrichtung des Materialstreifens vorgesehen ist.The inventive device is simple and compact and has the great advantage that the required way to open and close the upper and lower part is significantly reduced. This is achieved in that in a receiving space of the cutting plate is arranged under a uniform bias force-locking die insert is associated with the cutting punch, wherein the cutting edges of the die insert and / or the cutting punch by a partially shaped barrel for incomplete cutting of Feinschneidteils from the strip of material are interrupted, such that the fine blanking part and the strip of material by partial connecting parts are materially interconnected after cutting, and that the die insert relative to the cutting plate has a vertical offset for partial clamping of the strip of material on a press or guide plate, and that in the cutting plate Downshaft for discharging the separated by a shear-free breaking off the strip of material fine cutting parts is provided vertically downwards to the direction of the strip of material.

Die spezielle Formgebung der Schneidkanten von Matrizeneinsatz und/oder Schneidstempel besteht aus einer partiell ausgeformten Fase, die in Länge und/Dreite und/oder Neigung variieren kann und die Schneidkante von Matrizeneinsatz und/oder Schneidstempel entsprechend unterbricht, so dass das Feinschneidteil aus dem Materialstreifen nicht vollständig ausgeschnitten wird und an partiellen Verbindungspartien am Materialstreifen etwa an dessen oberen oder unteren Ebene in einer Höhenlage gegenüber dem Materialstreifen stoffschlüssig angebunden bleibt.The special shaping of the cutting edges of die insert and / or punch consists of a partially shaped chamfer, which can vary in length and / or three and / or inclination and interrupts the cutting edge of Matrizeneinsatz and / or cutting punch accordingly, so that the fine cutting part of the strip of material not is completely cut and remains firmly bonded to partial connecting parts on the material strip approximately at its upper or lower level in an altitude relative to the material strip.

Der für den Transport des Verbundes aus Materialstreifen und Feinschneidteil erforderliche Freiraum innerhalb des Innenraums der Vorrichtung wird dadurch erreicht, dass der Matrizeneinsatz gegenüber der Schneidplatte einen Höhenversatz aufweist, der so bemessen ist, dass der erforderliche Platz für die um die Materialstärke nach unten herausstehenden, jedoch noch am Materialstreifen angebundenen Feinschneidteile sichergestellt ist, so dass die Feinschneidteile weder in vertikaler Richtung zurückgedrückt oder anderweitig bewegt werden können.The space required for the transport of the composite of strips of material and fine blanking space within the interior of the device is achieved in that the die insert relative to the cutting plate has a height offset, which is dimensioned so that the required space for the material thickness downwardly protruding, however is still ensured on the strip of material fineblanking parts, so that the fineblanking parts can not be pushed back in the vertical direction or otherwise moved.

Die gegenüber der Schneidplatte hervorstehenden Matrizeneinsätze ermöglichen beim Klemmen des Materialstreifens auch eine Konzentration der feinschneidspezifischen Klemmkräfte um die Schneidgeometrie herum, was den Vorteil erbringt, dass die Qualität der Trennflächen am Feinschneidteil verbessert werden kann.The opposite to the cutting plate protruding die inserts allow for clamping the strip of material and a concentration of fine cutting specific clamping forces around the cutting geometry around, which provides the advantage that the quality of the interfaces on Feinschneidteil can be improved.

Der Matrizeneinsatz ist austauschbar und nach einem Nachschleifen auch mehrfach verwendbar. Der durch das Nachschleifen entstehende Höhen- bzw. Materialverlust am Matrizeneinsatz lässt sich durch in den Aufnahmeraum unter den Matrizeneinsatz gelegte Unterlagen verschiedener Dicke sehr leicht ausgleichen, ermöglicht eine flexible und kostengünstige Ersatzteilhaltung mit einer hoher Materialausnutzung der Matrizeneinsätze.The die insert is interchangeable and can also be used several times after regrinding. The one by the Regrind resulting height or material loss on Matrizeneinsatz can be compensated by placed in the receiving space under the die insert documents of different thickness very easily, allows flexible and cost-effective spare parts inventory with a high material utilization of Matrizeneinsätze.

Als Vorteil ergibt sich des Weiteren, dass der einlaufseitig in Schmiertaschen bevorratete Schmierstoff für den Feinschneidvorgang beim Klemmen des Materialstreifens in den Taschen verbleibt, weil nur noch ein punktuelles Klemmen des Materialstreifens rund um die Schneidgeometrie erfolgt und das bisher übliche flächiges Klemmen des Materialstreifens zwischen Ober- und Unterteil der Vorrichtung entfällt.Another advantage is that the lubricant stored on the inlet side in lubricant pockets remains in the pockets when the material strip is clamped because only a selective clamping of the material strip around the cutting geometry takes place and the previously usual planar clamping of the material strip between upper and lower surfaces. and lower part of the device is eliminated.

Das erfindungsgemäße Verfahren und die erfindungsgemäße Vorrichtung zeichnen sich durch kleine Öffnung- und Schließwege aus, so dass hohe Taktzahlen und hohe Ausbringleistungen erreicht werden können, wodurch der Einsatz von Hochgeschwindigkeitspressen ermöglicht wird.The inventive method and the device according to the invention are characterized by small opening and closing paths, so that high cycle rates and high output performance can be achieved, whereby the use of high-speed presses is made possible.

Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die beigefügten Zeichnungen.Further advantages and details will become apparent from the following description with reference to the accompanying drawings.

Ausführungsbeispielembodiment

Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden.The invention will be explained in more detail below using an exemplary embodiment.

Es zeigen dieIt show the

Fig. 1a bis 1d eine vereinfachte schematische Darstellung des Ablaufs des erfindungsgemäßen Verfahrens und Fig. 1a to 1d a simplified schematic representation of the sequence of the method according to the invention and

Fig. 2 eine Schnittdarstellung der Gestaltung der Verbindungspartie zwischen Feinschneidteil und Materialstreifen einerseits und der Gestaltung von Matrizeneinsatz und Schneidstempel andererseits und Fig. 2 a sectional view of the design of the connecting portion between fine blank and material strips on the one hand and the design of die insert and cutting punch on the other hand and

Mit dem erfindungsgemäßen Verfahren sollen Feinschneidteile 1 aus einem Materialstreifen 2 hergestellt werden.With the method according to the invention, fine blanking parts 1 are to be produced from a strip of material 2.

Die Fig. 1a zeigt die erfindungsgemäße Vorrichtung mit eingeführten Materialstreifen 2 im geöffneten Zustand von oberem Werkzeugteil 3 und unterem Werkzeugteil 4. Zum unteren Werkzeugteil 4 gehört eine Schneidplatte 5, die einen Aufnahmeraum 6 für die Aufnahme eines Matrizeneinsatzes 7 besitzt.
Der Matrizeneinsatz 7 ist in der Fig. 1a als ein einfach rohrartiger Einsatz gezeigt, kann aber auch andere kompliziertere Formen aufweisen. An seinem Umfang ist der Matrizeneinsatz 7 beispielsweise durch eine nicht dargestellte Verschraubung in der Schneidplatte 5 unter gleichmäßiger Vorspannung gehalten, so dass die beim Schneiden auftretenden Kräfte sicher von Matrizeneinsatz 7 aufgenommen werden können. Der Matrizeneinsatz 7 ist somit aus dem Aufnahmeraum 6 der Schneidplatte 5 entnehmbar und kann bei Bedarf entsprechend nachgeschliffen werden. Durch eine in den Aufnahmeraum 6 der Schneidplatte 5 eingelegte Unterlage 8 wird der Höhenverlust des Matrizeneinsatzes 7 infolge des Nachschleifens ausgeglichen. Es werden Unterlagen 8 mit unterschiedlichen Dicken bereitgehalten, so dass je nach Größe des Nachschliffs unterschiedliche Höhenverluste kompensiert werden können und der Matrizeneinsatz 7 wieder die ursprüngliche Höhe erreicht.The Fig. 1a shows the device according to the invention with inserted strips of material 2 in the open state of the upper tool part 3 and lower tool part 4. The lower tool part 4 includes a cutting plate 5, which has a receiving space 6 for receiving a die insert 7.
The Matrizeneinsatz 7 is in the Fig. 1a shown as a simple tubular insert, but may also have other more complicated shapes. At its periphery of the die insert 7 is held for example by a screw, not shown in the cutting plate 5 under uniform bias, so that the forces occurring during cutting can be safely absorbed by die insert 7. The Matrizeneinsatz 7 is thus removed from the receiving space 6 of the cutting plate 5 and can be reground accordingly if necessary. By a placed in the receiving space 6 of the insert 5 pad 8, the height loss of the die insert 7 compensated as a result of regrinding. It documents 8 are kept at different thicknesses, so that depending on the size of the regrinding different height losses can be compensated and the die insert 7 reaches the original height again.

Gegenüber der Schneidplatte 5 weist der Matrizeneinsatz 7 einen Höhenversatz H auf, so dass der Matrizeneinsatz 7 deutlich über dem Niveau der Schneidplatte 5 liegt. Dieser Höhenversatz H ist so bemessen, dass er etwa der Materialstärke des Materialstreifens 2 entspricht. Das obere Werkzeugteil 3 und untere Werkzeugteil 4 der erfindungsgemäßen Vorrichtung sind soweit geöffnet, dass der eingeführte Materialstreifen mit dem angebundenen Feinschneidteil 1 ausreichend Platz in Laufrichtung R des Materialstreifens 2 besitzt.Compared to the cutting plate 5, the die insert 7 has a height offset H, so that the die insert 7 is significantly above the level of the cutting plate 5. This height offset H is dimensioned such that it corresponds approximately to the material thickness of the material strip 2. The upper tool part 3 and lower tool part 4 of the device according to the invention are opened so far that the imported material strip with the tailed fine cutting part 1 has sufficient space in the direction R of the material strip 2.

In der unteren Schneidplatte 5 ist dem Matrizeneinsatz 7 ein Fallschacht 9 zum Abführen der Feinschneidteile 1 etwa senkrecht nach unten zur Laufrichtung R des Materialstreifens 2 nachgeordnet.In the lower cutting plate 5 is the die insert 7 a chute 9 for discharging the fine cutting parts 1 is arranged approximately vertically downwards to the direction R of the material strip 2.

Dem Matrizeneinsatz 7 ist ein Schneidstempel 11 im oberen Werkzeugteil 3 zum Ausschneiden des Feinschneidteils 1 aus dem Materialstreifen 2 und dem Fallschacht 9 ein Ausstosser 12 zugeordnet.
Zum oberen Werkzeugteil 3 gehört eine Press- oder Führungsplatte 10, in der mindestens ein Schneidstempel 11 und mindestens ein Ausstosser 12 geführt sind.The die insert 7 is a punch 11 in the upper tool part 3 for cutting the fine blanking part 1 from the strip of material 2 and the chute 9 associated with an ejector 12.
The upper tool part 3 includes a press or guide plate 10 in which at least one cutting punch 11 and at least one ejector 12 are guided.

Fig. 1b zeigt den geschlossenen Werkzeugoberteil 3 und Werkzeugunterteil 4 mit zwischen Matrizeneinsatz 7 und der Führungsplatte 10 geklemmten Materialstreifen 2. Die Klemmung erfolgt rings um die Schneidgeometrie, so dass die feinschneidspezifischen Klemmkräfte auf einen schmalen Bereich konzentriert sind. Dies unterstützt die Erzeugung glattgeschnittener Trennflächen am Feinschneidteil 1. Durch den gegenüber der Schneidplatte 5 höher gelegten Matrizeneinsatz 7 können in der Schneidplatte angeordnete Schmiertaschen entfallen und der Schmierstoffvorrat auf dem Materialstreifen steht ausschließlich für den Feinschneidvorgang zur Verfügung. Fig. 1b shows the closed upper tool part 3 and lower tool part 4 with between die insert 7 and The clamping plate is clamped around the cutting geometry, so that the fine cutting specific clamping forces are concentrated on a narrow range. This supports the production of smooth-cut separating surfaces on the fineblanking part 1. By means of the die insert 7 placed higher in relation to the cutting insert 5, lubrication pockets arranged in the cutting plate can be dispensed with and the lubricant supply on the material strip is available exclusively for the fineblanking process.

Die Fig. 1c zeigt den Arbeitsschritt des erfindungsgemäßen Verfahrens, bei dem der Schneidstempel 5 einen unvollständigen Komplettschnitt im Materialstreifen 2 ausgeführt hat und das Feinteilschneidteil 1 zu etwa 80 bis 90% seines Umfanges ausgeschnitten ist. Es wird jetzt auf Fig. 2 Bezug genommen, in der das Feinschneidteil 1 an beispielsweise einer schmalen Verbindungspartie 14 mit dem Materialstreifen 2 stoffschlüssig nach dem Schnitt verbunden bleibt.
Der unvollständige Komplettschnitt wird durch eine entsprechende Präparation der Schneidkanten 15 von Matrizeneinsatz 7 und/oder Schneidstempel 11 in Verbindung mit der Kinematik der eingesetzten Feinschneidpresse, welche unabhängig von den Dickenschwankungen des Materialstreifens immer in die dieselbe vertikale Position der Schneidkanten von Matrizeneinsatz 7 und Schneidstempel 11 fährt, erreicht. Die Schneidkante 15 des Matrizeneinsatzes 7 kann beispielsweise entlang ihres Kantenverlaufs durch eine oder mehrere Fasen 16 gebrochen sein. Es gehört natürlich zur erfindungsgemäßen Lösung, wenn die Breite und/oder Länge und/oder Neigung dieser Fasen variieren. Dies richtet sich nach der Größe, Geometrie und nach ihrer Verteilung auf dem Matrizeneinsatz 7 und/oder Schneidstempel 11 sowie nach der Dicke und Qualität des Materialstreifens und nach den zulässigen Formtoleranzen radial und axial an den Anbindungspunkten, des Feinschneidteils 1, was durch die Maße h und i am Matrizeneinsatz 7 und die Maße 1 und k am Schneidstempel verdeutlicht ist. Das gilt auch für die Einschertiefe T des Schneidstempels 11 in den Matrizeneinsatz 7.The Fig. 1c shows the step of the method according to the invention, in which the cutting punch 5 has performed an incomplete complete cut in the strip of material 2 and the fine part cutting part 1 is cut to about 80 to 90% of its circumference. It will be up now Fig. 2 Reference is made, in which the fine blanking part 1 remains connected to, for example, a narrow connecting portion 14 with the material strip 2 cohesively after the cut.
The incomplete complete cut is achieved by a corresponding preparation of the cutting edges 15 of die insert 7 and / or cutting punch 11 in conjunction with the kinematics of the fine blanking press used, which always moves independently of the thickness variations of the material strip in the same vertical position of the cutting edges of die insert 7 and cutting punch 11 , reached. The cutting edge 15 of the die insert 7 can be broken, for example, along its edge profile by one or more chamfers 16. Of course, it is part of the solution according to the invention if the width and / or length and / or inclination of these bevels vary. This is aimed according to the size, geometry and after their distribution on the die insert 7 and / or cutting punch 11 and the thickness and quality of the material strip and the allowable shape tolerances radially and axially at the connection points, the fine blanking part 1, which by the dimensions h and i am Die insert 7 and the dimensions 1 and k is illustrated on the cutting punch. This also applies to the Einschertiefe T of the cutting punch 11 in the die insert. 7

In der Fig. 1d ist gezeigt, dass der Ausstosser 12 der Entformungsstufe die Verbindungspartien 14 zwischen Feinschneidteil 1 und Materialstreifen 2 scherkraftfrei getrennt hat und das Feinschneidteil 1 durch den Fallschacht 9 senkrecht zur Laufrichtung R des Materialstreifens 2 nach unten abgeführt wird. Die Verbindungspartien 14 werden durch den Ausstosser 12 weitgehend beschädigungsfrei ausgebrochen. Vorteilhafterweise werden die Verbindungspartien 14 so am Umfang des Feinschneidteils 1 verteilt, dass diese nicht an den Funktionsflächen dem Feinschneidteils liegen.In the Fig. 1d It is shown that the ejector 12 of the demolding stage has separated the connecting parts 14 between the fineblank 1 and strips of material 2 shearing force and fineblanking part 1 is discharged through the chute 9 perpendicular to the direction R of the strip of material 2 down. The connecting parts 14 are broken by the ejector 12 largely free of damage. Advantageously, the connecting parts 14 are distributed on the circumference of the fineblanking part 1 that they do not lie on the functional surfaces of the fineblanking part.

Der Materialstreifen 1 bildet nach dem Schneidvorgang mit dem angebundenen Feinschneidteil 1 einen Verbund, der ohne irgendeine Relativbewegung in vertikaler Richtung bei geöffneter erfindungsgemäßer Vorrichtung in Laufrichtung R bis zur Entformungsstufe transportiert werden kann, weil durch die gegenüber dem Matrizeneinsatz 7 tiefer gelegte Schneidplatte 5 ein ausreichender Platz der um etwa die Materialstärke des Materialstreifens 2 nach unten herausstehenden Feinschneidleile 1 vorhanden ist. Dies ist mit dem sehr großen Vorteil verbunden, dass der notwendige öffnungsweg bei der erfindungsgemäßen Vorrichtung so klein gehalten werden kann, dass die Taktzahlen massiv erhöht werden können. Dies ermöglicht, den Einsatz von Hochgeschwindigkeitspressen.The strip of material 1 forms after the cutting process with the tailed fine cutting part 1 a composite that can be transported without any relative movement in the vertical direction with open inventive device in the direction R to Entformungsstufe, because by the relative to the die insert 7 deeper placed cutting plate 5 sufficient space which is about the thickness of the strip of material 2 downwardly protruding fine cutting 1 is present. This is associated with the very great advantage that the necessary opening path at the device according to the invention can be kept so small that the cycle numbers can be massively increased. This allows the use of high speed presses.

Bezugszeichenliste Feinschneidteil 1 Materialstreifen 2 Oberes Werkzeugteil 3 Unteres Werkzeugteil 4 Schneidplatte 5 Aufnahmeraum in 5 6 Matrizeneinsatz 7 Unterlage 8 Fallschacht 9 Press- oder Führungsplatte 10 Schneidstempel 11 Ausstosser 12 Verbindungspartie 14 Schneidkante 15 Fasen 16 Höhenversatz H Einschertiefe T Laufrichtung des Materialstreifens 2 R Maße der Fase 16 an 7 h, i Maße der Fase 16 an 12 l, k LIST OF REFERENCE NUMBERS Fine cutting part 1 strips of material 2 Upper tool part 3 Lower tool part 4 cutting board 5 Recording room in 5 6 die insert 7 document 8th chute 9 Press or guide plate 10 cutting punch 11 ejector 12 connecting part 14 cutting edge 15 chamfers 16 height offset H Einschertiefe T Running direction of the material strip 2 R Dimensions of chamfer 16 to 7 Hi Dimensions of bevel 16 at 12 l, k

Claims (10)

  1. Method for producing fine blanking parts in a fine blanking tool, wherein a material strip is clamped between two tool parts respectively between an upper pressure pad or guiding plate and a lower cutting die as well as between an upper shearing punch and a lower shearing punch and the cutting is carried out in cooperation with the upper and lower shearing punches, wherein the cutting is realized as an incomplete compound die alongside the circumference of the fine blanking part with a specially formed cutting edge of the shearing punch and/or the cutting die in such a way, that the fine blanking part for the time being at partial connecting sections stays materially connected to the material strip with an elevation with regard to the material strip possibly at its upper or lower plane and then together with the material strip is moved in the moving direction of the strip until a following removal stage, characterized in that for cutting are used a die-plate inset, which can be positioned in a seating of the cutting die, and an allocated to the die-plate inset shearing punch with partially shaped bezels along their cutting edges, wherein the fine blanking part and the material strip are removed downwards perpendicular to the moving direction of the material strip by means of fracturing without shearing force, wherein the removed fine blanking part is removed through a hole in the cutting die.
  2. Method according to claim 1, characterized in that the fine blanking part up to 80 to 90 % of its circumference is completely cut out of the material strip.
  3. Method according to claims 1 and 2, characterized in that the fine blanking part after the incomplete compound die is hold at the material strip by at least one, in special cases by two or more, connection section(s).
  4. Method according to claim 1, characterized in that the die-plate inset due to resharpening the face side can be used repeatedly, wherein the loss of height respectively the loss of material of the die-plate inset created by the resharpening process is compensated by one or more spacers set into the seating of the cutting die.
  5. Method according to claim 1, characterized in that the die-plate inset alongside its circumference is uniformly prestressed due to the shape matched to the geometry of the fine blanking part.
  6. Method according to claims 1 to 5, characterized in that the clamping of the material strip between upper and lower tool parts is realized by solely the die-plate inset.
  7. Device for producing fine blanking parts from a material strip with at least one cutting die and one shearing punch for cutting the fine blanking part out of a material strip, characterized in that in a seating (6) of the cutting die (5) is located a die-plate (7) nonpositively hold under uniform prestress to which is allocated the shearing punch (12), wherein the cutting edges (15) of the die-plate inset (7) and/or the shearing punch (12) are interrupted by a partially shaped bezel (16) for incompletely cutting out the fine blanking part (1) of the material strip (2), in such a way, that the fine blanking part (1) and the material strip (2) are after the cutting process are materially connected by partial connecting sections (14) and that the die-plate inset (7) with regard to the cutting die (5) has an elevation (H) to partially clamp the material strip (2) at a pressure pad or guiding plate (10) and that in the cutting die (5) is provided a hole (9) for perpendicularly with regard to the moving direction of the material strip downwards removing the fine blanking part broken off the material strip without shearing force.
  8. Device according to claim 7, characterized in that the bezels (16) have a different length and/or width and/or angularity.
  9. Device according to claim 7, characterized in that the die-plate inset (7) is exchangeable.
  10. Device according to claim 7, characterized in that one or several positioned in the seating (6) under the die-plate inset (7) spacers (8) of different thickness are provided to compensate the material and height loss created by resharpening the die-plate inset.
EP20080012011 2008-07-03 2008-07-03 Method and device for manufacturing finely cut sections from a strip of material Not-in-force EP2140954B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP20080012011 EP2140954B1 (en) 2008-07-03 2008-07-03 Method and device for manufacturing finely cut sections from a strip of material
AT08012011T ATE524251T1 (en) 2008-07-03 2008-07-03 METHOD AND DEVICE FOR PRODUCING FINE BLANKED PARTS FROM A STRIP OF MATERIAL
JP2011515166A JP5698125B2 (en) 2008-07-03 2009-06-17 Method and apparatus for producing precision stamped parts from strip material
PCT/EP2009/004364 WO2010000389A1 (en) 2008-07-03 2009-06-17 Method and device for producing fine-blanked parts from a material strip
EP20090772089 EP2303488B1 (en) 2008-07-03 2009-06-17 Method and device for producing fine-blanked parts from a material strip
AT09772089T ATE544541T1 (en) 2008-07-03 2009-06-17 METHOD AND DEVICE FOR PRODUCING FINE BLANKED PARTS FROM A STRIP OF MATERIAL
US12/977,733 US8910549B2 (en) 2008-07-03 2010-12-23 Method and device for producing precision blankings from a material strip

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Application Number Priority Date Filing Date Title
EP20080012011 EP2140954B1 (en) 2008-07-03 2008-07-03 Method and device for manufacturing finely cut sections from a strip of material

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EP2140954A1 EP2140954A1 (en) 2010-01-06
EP2140954B1 true EP2140954B1 (en) 2011-09-14

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EP20090772089 Active EP2303488B1 (en) 2008-07-03 2009-06-17 Method and device for producing fine-blanked parts from a material strip

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EP2608299B1 (en) * 2011-12-22 2014-04-09 Feintool Intellectual Property AG Device and method for manufacturing metallic bipolar panels
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EP2140954A1 (en) 2010-01-06
EP2303488B1 (en) 2012-02-08
ATE544541T1 (en) 2012-02-15
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ATE524251T1 (en) 2011-09-15
US20110132162A1 (en) 2011-06-09
WO2010000389A1 (en) 2010-01-07

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