EP1551574A1 - Device for transverse extrusion of workpieces and operating method for said device - Google Patents

Device for transverse extrusion of workpieces and operating method for said device

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Publication number
EP1551574A1
EP1551574A1 EP03807787A EP03807787A EP1551574A1 EP 1551574 A1 EP1551574 A1 EP 1551574A1 EP 03807787 A EP03807787 A EP 03807787A EP 03807787 A EP03807787 A EP 03807787A EP 1551574 A1 EP1551574 A1 EP 1551574A1
Authority
EP
European Patent Office
Prior art keywords
die
plunger
pressure
halves
die halves
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.)
Granted
Application number
EP03807787A
Other languages
German (de)
French (fr)
Other versions
EP1551574B2 (en
EP1551574B1 (en
Inventor
Hubert Brida
Thomas Keppler-Ott
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.)
ThyssenKrupp Presta AG
Original Assignee
ThyssenKrupp Automotive AG
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Publication date
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Publication of EP1551574A1 publication Critical patent/EP1551574A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B21J5/025—Closed die forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Extrusion Of Metal (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The device has a press table with a first die half (10), a press ram with a second die half (9), and separate units to close the die halves. At least one of the halves has a separately controlled ram (13,14), which is moved in working direction past the forming contour of the die half. The ram is supported on the supporting part of the die half, an the power-time-ratio of each die half can be regulated. The units to close the die halves are hydraulic or pneumatic ring pistons (5,6) and are positioned to enclose the holder units (1,2) of the die halves.

Description

Vorrichtung zum Querfließpressen von Werkstücken und Verfahren zum Betreiben einer derartigen VorrichtungDevice for cross extrusion of workpieces and method for operating such a device
Beschreibungdescription
Die Erfindung betrifft eine Vorrichtung zum Querfließpressen von Werkstücken nach dem Oberbegriff des Anspruchs 1. Die Umformung der Werkstücke erfolgt in zwei aufeinander liegenden Matrizenhälften, wobei das Werkstück zwischen zwei Stempel derartig verpresst wird, dass ein Teil des Werkstoffes quer zur Pressrichtung in von den Matrizenhälften gebildete Hohlräume ausweicht.The invention relates to a device for the transverse extrusion of workpieces according to the preamble of claim 1. The forming of the workpieces takes place in two superimposed die halves, the workpiece being pressed between two punches in such a way that part of the material is formed transversely to the pressing direction in the die halves Cavities evades.
Wesentlich bei dieser Form des Querfließpressens ist, dass die Matrizenhälften während des Umformvorganges stets aufeinander liegen und auch durch die Umformkräfte nicht voneinander getrennt werden dürfen. Von daher werden die Matrizenhälften durch Kraft beaufschlagte Einrichtungen, vorzugsweise durch Hydraulik- oder Pneumatikkolben zusammengehalten, die eine derartig hohe Kraft aufbringen müssen, dass die Umformkräfte die Matrizenhälften nicht zu öffnen in der Lage sind.It is essential with this form of transverse extrusion that the die halves always lie on one another during the forming process and must not be separated from one another by the forming forces. For this reason, the die halves are held together by force-loaded devices, preferably by hydraulic or pneumatic pistons, which have to exert such a high force that the forming forces are unable to open the die halves.
Eine derartige Einrichtung ist in der DE 199 22 666 gezeigt. Nachteilig bei derartig kompliziert aufgebauten Werkzeugen ergibt sich, dass der umzuformende Rohling nur schwierig und häufig auch ungenau in das Werkzeug eingelegt werden kann. Des Weiteren nachteilig ist nicht sichergestellt, dass der Rohling sich während der Umformung in der richtigen Lage im Umformwerkzeug, vorzugsweise mittig hierin und mittig zur Trennebene befindet. Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Querfließpressen von Werkstücken derartig zu gestalten, dass der Rohling einfach in diese Vorrichtung einbringbar ist und Mittel vorzusehen, die den Rohling in der vorgesehenen Lage im Werkzeug halten.Such a device is shown in DE 199 22 666. A disadvantage of such complicatedly constructed tools is that the blank to be formed can be inserted into the tool only with difficulty and often inaccurately. Furthermore, it is disadvantageously not ensured that the blank is in the correct position in the forming tool during the forming, preferably in the center thereof and in the center of the parting plane. The invention has for its object to design a device for cross extrusion of workpieces such that the blank can be easily inserted into this device and provide means that hold the blank in the intended position in the tool.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Aus- und Weiterbildungen sind in den Merkmalen 2 bis 10 beschrieben. Anspruch 11 beschreibt ein bevorzugtes Verfahren zum Betreiben einer Vorrichtung nach den Ansprüchen 1 bis 10.This object is achieved with the features of claim 1. Advantageous training and further developments are described in features 2 to 10. Claim 11 describes a preferred method for operating a device according to claims 1 to 10.
Zusätzlich zur Lösung der gestellten Aufgabe ergibt sich vorteilhaft, dass mit den erfindungsgemäßen Mitteln erreicht werden kann, dass während des Umformvorganges eine gezielte Steuerung des Fließverhaltens vorgenommen werden kann. Dieses wird dadurch erreicht, dass die die Stößel beaufschlagenden Druckräume separat für jede Matrizenhälfte bezüglich ihres Kraft-Zeit-Verhaltens regelbar sind.In addition to solving the problem, it is advantageous that the means according to the invention can be used to achieve a targeted control of the flow behavior during the forming process. This is achieved in that the pressure chambers acting on the rams can be regulated separately for each die half with regard to their force-time behavior.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigenAn embodiment of the invention is shown in the drawing and is described in more detail below. Show it
Figur 1 die Vorrichtung in geöffnetem Zustand, Figur 2 die Vorrichtung gemäß Figur 1 nach dem Fixieren des Rohlings, Figur 3 die Vorrichtung in zusammengefahrenem Zustand und Figur 4 die Vorrichtung nach dem Umformvorgang.1 shows the device in the open state, FIG. 2 shows the device according to FIG. 1 after fixing the blank, FIG. 3 shows the device in the closed state and FIG. 4 shows the device after the forming process.
Die dargestellte Vorrichtung eignet sich besonders zum Querfließpressen von Werkstücken auf waagerecht arbeitenden Umformmaschinen, vorzugsweise Mehr- stufenumformmaschinen. Dabei kann der Umformvorgang entgegen dem Ausführungsbeispiel auch in mehreren Werkzeugen in mehreren Umformschritten durchgeführt werden. Wie aus den Figuren 1 bis 4 ersichtlich, sind die Hälften der Umformvorrichtung etwa identisch aufgebaut. Jede Vorrichtungshälfte weist eine Halteeinrichtung 1 , 2 auf. Diese Halteeinrichtungen 1 , 2 sind mit dem nicht näher dargestellten Pressentisch und Pressenstempel bzw. der matrizen- und stempelseitigen Aufnahmeeinrichtung einer Horizontalpresse verbunden.The device shown is particularly suitable for cross extrusion of workpieces on horizontally working forming machines, preferably multi-stage forming machines. In contrast to the exemplary embodiment, the shaping process can also be carried out in several tools in several shaping steps. As can be seen from Figures 1 to 4, the halves of the forming device are constructed approximately identically. Each device half has a holding device 1, 2. These holding devices 1, 2 are connected to the press table and press ram (not shown in more detail) or the die and ram-side receiving device of a horizontal press.
Die Haltevorrichtungen 1 , 2 tragen jeweils einen Zylindertopf 3, 4. Diese Zylindertöpfe 3, 4 tragen wiederum Ringkolben 5, 6, die in den Mänteln der Zylindertöpfe 3, 4 sowie jeweils mit einer buchsenförmigen Verlängerung 7, 8, in Bohrungen in den Böden der Zylindertöpfe 3, 4, geführt werden.The holding devices 1, 2 each carry a cylinder pot 3, 4. These cylinder pots 3, 4 in turn carry annular pistons 5, 6, which in the jackets of the cylinder pots 3, 4 and each with a sleeve-shaped extension 7, 8, in holes in the bottoms of Cylinder pots 3, 4 are guided.
An den Stirnseiten der Ringkolben 5, 6 sind die Matrizenhälften 9, 10 befestigt, wobei diese Matrizenhälften 9, 10 mit Armierungen 11 , 12 gegen radiales Aufweiten vorgespannt sind.The die halves 9, 10 are fastened to the end faces of the annular pistons 5, 6, these die halves 9, 10 being prestressed with reinforcements 11, 12 against radial expansion.
Die Matrizenhälften 9, 10 werden axial zentral von Stößeln 13, 14 durchdrungen. Diese Stößel 13, 14 werden in den Matrizenhälften 9, 10 und in einer zentralen Bohrung durch die Ringkolben 5, 6 geführt. Die Stößel 13, 14 liegen werkzeugseitig über Zwischenstücke 15, 16 an Druckkolben 17, 18 an.The die halves 9, 10 are penetrated axially centrally by plungers 13, 14. These plungers 13, 14 are guided in the die halves 9, 10 and in a central bore through the annular pistons 5, 6. The plungers 13, 14 rest on the tool side via intermediate pieces 15, 16 on pressure pistons 17, 18.
Durch diese Konstruktion werden zwischen den Zylindertöpfen 3, 4 und den Ringkolben 5, 6 Druckräume 19, 20 gebildet, die mit Druckflüssigkeit oder unter Druck stehendem Gas oder Luft beaufschlagt werden können. Entsprechende Druckräume 21 , 22 sind oberhalb der Druckkolben 17, 18 angeordnet, um diese mit Druck beaufschlagen zu können.Through this construction, pressure chambers 19, 20 are formed between the cylinder pots 3, 4 and the annular pistons 5, 6, which can be pressurized with pressurized liquid or pressurized gas or air. Corresponding pressure chambers 21, 22 are arranged above the pressure pistons 17, 18 in order to be able to pressurize them.
Figur 1 zeigt das auseinandergefahrene Werkzeug. In dieser Position kann beispielsweise über Greifer der Rohling 23 zwischen die auseinandergefahrenen Stößel 13, 14 gebracht und hier gehalten werden (durch Pfeile dargestellt). Die Stößel 13, 14 fahren dann, wie in Figur 2 dargestellt, aufeinander zu. Dieses kann, wie auch in Figur 2 gezeigt, durch das Vorfahren des Pressenstempels auf den Pressentisch erfolgen. Da jedoch mehrere Bauteile axial ineinander verschieblich sind, könnte dieses beispielsweise auch über ein Vorfahren des oberen und/oder unteren Ringkolbens 6, 7 im Zylindertopf 3, 4 erfolgen. In gleicher Weise aber auch durch ein Vorfahren der Stößel 13, 14, die dann in der Ausgangsstellung in zurückgefahrener Position sein müssen.Figure 1 shows the extended tool. In this position, for example, the blank 23 can be brought between the extended plungers 13, 14 and held here by grippers (represented by arrows). The plungers 13, 14 then move towards one another, as shown in FIG. As can also be seen in FIG. 2, this can be done by moving the press ram forward onto the press table. However, since several components are axially displaceable, could this can also be done, for example, by advancing the upper and / or lower annular piston 6, 7 in the cylinder cup 3, 4. In the same way, however, also by advancing the plungers 13, 14, which must then be in the retracted position in the starting position.
Durch weiteres Zusammenfahren von Pressenstempel und Pressentisch werden dann, wie in Figur 3 gezeigt, die Matrizenhälften 9, 10 aufeinandergefahren. Dabei können Einrichtungen zum Einfädeln und Positionieren der Werkzeughälften (hier nicht dargestellt) Verwendung finden. Vorher oder danach muss dann in den Druckräumen 19, 20 ein derartig hoher Hydraulik- oder Pneumatikdruck aufgebaut werden, dass die nachfolgende Umformung des Rohlings 23 zum fertigen Werkstück 24 (in Figur 4 gezeigt) nicht zu einem Auseinanderklaffen der Matrizenhälften 9, 10 führt. Im Ausführungsbeispiel sind die Stößel 13, 14 so gestaltet, dass sie vor Beginn des eigentlichen Umformvorganges über die Zwischenstücke 15, 16 und die Druckkolben 17, 18 an den Halteeinrichtungen 1 , 2 anliegen. Damit kann zur Umformung die volle Kraft des Pressenstempels eingesetzt werden.By moving the press ram and press table further together, the die halves 9, 10 are then moved together, as shown in FIG. 3. Devices for threading and positioning the tool halves (not shown here) can be used. Before or afterwards, such a high hydraulic or pneumatic pressure must then be built up in the pressure chambers 19, 20 that the subsequent forming of the blank 23 into the finished workpiece 24 (shown in FIG. 4) does not lead to a gaping of the die halves 9, 10. In the exemplary embodiment, the plungers 13, 14 are designed such that they bear against the holding devices 1, 2 via the intermediate pieces 15, 16 and the pressure pistons 17, 18 before the actual shaping process begins. This means that the full force of the press ram can be used for forming.
Figur 4 zeigt die Vorrichtung nach dem Umformen des Rohlings 23 zum fertigen Werkstück 24. In dieser Position sind die Ringkolben 5, 6 in die Zylindertöpfe 3, 4 eingefahren. Die Hydraulikflüssigkeit bzw. das Pneumatikmedium sind entsprechend gesteuert oder geregelt abgeführt bzw. komprimiert.FIG. 4 shows the device after the blank 23 has been formed into the finished workpiece 24. In this position, the annular pistons 5, 6 are moved into the cylinder pots 3, 4. The hydraulic fluid or the pneumatic medium are appropriately controlled or regulated discharged or compressed.
Durch eine geregelte Abführung bzw. Komprimierung der Hydraulikflüssigkeit bzw. des Pneumatikmediums, beispielsweise über Regelventile, kann das Kraft-Zeit-Verhalten aller Vorrichtungsteile gegeneinander gezielt gesteuert werden. Dadurch kann zum einen durch die gezielte geregelte Ableitung der Hydraulikflüssigkeit bzw. des Pneumatikmediums aus den Druckräumen 21 , 22 sichergestellt werden, so dass der Rohling 23 in jeder Phase seiner Umformung zum Werkstück 24 die richtige Lage in Bezug auf das Zusammenfahren der Stößel 13, 14 in die Matrizenhälften 9, 10 gewährleistet ist. Durch entsprechende Veränderungen kann sogar ein besonderes gezieltes Fließverhalten erreicht werden. Diese Maßnahme kann unterstützt werden durch die geregelte Abfuhr der Hydraulikflüssigkeit bzw. des Pneumatikmediums aus den Druckräumen 19, 20.The force-time behavior of all parts of the device can be controlled in a targeted manner by controlled discharge or compression of the hydraulic fluid or the pneumatic medium, for example via control valves. This can be ensured, on the one hand, by the targeted, controlled discharge of the hydraulic fluid or the pneumatic medium from the pressure chambers 21, 22, so that the blank 23 in every phase of its forming into the workpiece 24 has the correct position with respect to the movement of the plungers 13, 14 is guaranteed in the die halves 9, 10. Appropriate flow behavior can even be achieved by appropriate changes. This measure can be supported through the controlled discharge of the hydraulic fluid or the pneumatic medium from the pressure chambers 19, 20.
Abschließend können einer oder beide der Stößel 13, 14 als Auswerfer dienen. Es ist sogar möglich, dass das fertige Werkstück zwischen den Stößeln 13, 14 gehalten werden und dann von einer Greifeinrichtung aufgenommen und gezielt einer weiteren Bearbeitung zuführt werden kann. Finally, one or both of the plungers 13, 14 can serve as ejectors. It is even possible that the finished workpiece can be held between the plungers 13, 14 and then picked up by a gripping device and fed to a further processing in a targeted manner.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1. Halteeinrichtung1. Holding device
2. Halteeinrichtung2. Holding device
3. Zylindertopf3. Cylinder pot
4. Zylindertopf4. Cylinder pot
5. Ringkolben5. Ring piston
6. Ringkolben6. Ring piston
7. Verlängerung7. Extension
8. Verlängerung8. Extension
9. Matrizenhälfte9. Die half
10. Matrizenhälfte 11.Armierung10. Die half 11. Arming
12. Armierung12. Reinforcement
13. Stößel U.Stößel13.Tappet & Tappet
15. Zwischenstück15. Intermediate piece
16. Zwischenstück16. Intermediate piece
17. Druckkolben17. Pressure piston
18. Druckkolben18. Pressure piston
19. Druckraum19. Pressure room
20. Druckraum20. Pressure room
21. Druckraum21. Pressure room
22. Druckraum22. Pressure room
23. Rohling23. Blank
24. Werkstück 24. Workpiece

Claims

AnsprücheExpectations
Vorrichtung zum Querfließpressen von Werkstücken (24), einen Pressentisch, der eine erste Matrizen hälfte (10) trägt und einen sich senkrecht zum Pressentisch beweglichen, die erforderliche Umformkraft aufbringenden Pressenstempel, an dem die zweite Matrizenhälfte (9) befestigt ist, aufweisend sowie mit separat gesteuerten, Kraft beaufschlagten Einrichtungen zum Zuhalten der Matrizenhälften (9, 10), dadurch gekennzeichnet, dass wenigstens eine der Matrizenhälften (9, 10) mit einem separat ansteuerbaren, bis über die Umformkontur der Matrizenhälfte (9, 10) in Arbeitsrichtung verschiebbarem Stößel (13, 14) ausgebildet ist.Device for the transverse extrusion of workpieces (24), a press table which carries a first die half (10) and a press die which can move perpendicularly to the press table and exert the required forming force and to which the second die half (9) is fastened, and with separately Controlled, force-loaded devices for locking the die halves (9, 10), characterized in that at least one of the die halves (9, 10) with a separately controllable plunger (13 that can be displaced in the working direction over the forming contour of the die half (9, 10) , 14) is formed.
Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der Stößel (13, 14) sich wenigstens während der letzten Phase der Umformung am sie tragenden Teil der Matrizenhälfte (13, 14) abstützt.Device according to claim 1, characterized in that the plunger (13, 14) is supported at least during the last phase of the forming on the part of the die half (13, 14) which supports it.
Vorrichtung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass das Kraft-Zeit-Verhalten des Stößels (13, 14) regelbar ist.Apparatus according to claim 1 or claim 2, characterized in that the force-time behavior of the plunger (13, 14) can be regulated.
Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass bei Verwendung jeweils eines Stößels (13, 14) an jeder Matrizenhälfte (9, 10) das jeweilige Kraft-Zeit-Verhalten der Stößel (13, 14) unabhängig voneinander regelbar ist.Apparatus according to claim 3, characterized in that when a plunger (13, 14) is used on each die half (9, 10), the respective force-time behavior of the plunger (13, 14) can be regulated independently of one another.
Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Einrichtungen zum Zuhalten der Matrizenhälften (9, 10) als hydraulische oder pneumatische Ringkolben (5, 6) ausgebildet und die Halteeinrichtungen (1 , 2) der Matrizenhälften (9, 10) umgebend angeordnet sind. Device according to one or more of claims 1 to 4, characterized in that the devices for locking the die halves (9, 10) are designed as hydraulic or pneumatic ring pistons (5, 6) and the holding devices (1, 2) of the die halves (9, 10) are arranged surrounding.
6. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass den Stößeln (13, 14) und den Ringkolben (5, 6) hydraulische oder pneumatische Druckräume (19, 20, 21, 22) zugeordnet sind, von denen wenigstens einer unabhängig von den anderen mit mindestens einer separaten Drucksteuereinrichtung verbunden ist, die einen gegenüber den anderen verschiedenen gesteuerten oder geregelten Druckverlauf in den Druckräumen (19, 21 , 20, 22) ermöglicht.6. The device according to one or more of claims 1 to 5, characterized in that the tappets (13, 14) and the annular piston (5, 6) hydraulic or pneumatic pressure chambers (19, 20, 21, 22) are assigned, of which at least one is connected independently of the others to at least one separate pressure control device, which enables a pressure course in the pressure spaces (19, 21, 20, 22) that is different from the other to be controlled or regulated.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Druckverlauf in den Druckräumen (19, 20, 21, 22) voneinander unabhängig getrennt oder voneinander abhängig gemeinsam geregelt wird.7. The device according to claim 6, characterized in that the pressure profile in the pressure chambers (19, 20, 21, 22) is independently controlled or controlled jointly depending on each other.
8. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Stößel (13, 14) in den jeweiligen Matrizenhälften (9, 10) geführt sind.8. The device according to one or more of claims 1 to 7, characterized in that the plungers (13, 14) in the respective die halves (9, 10) are guided.
9. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Matrizenhälften (9,10) jeweils eine Halteeinrichtung (1 , 2) aufweisen, an der in Arbeitsrichtung verschieblich jeweils eine Zuhalteeinrichtung und ein Druckkolben (17, 18) für die Stößel (13, 14) angeordnet sind.9. The device according to one or more of claims 1 to 8, characterized in that the die halves (9, 10) each have a holding device (1, 2), on each of which a locking device and a pressure piston (17, 18) are displaceable in the working direction. for the plunger (13, 14) are arranged.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass der jeweilige Druckkolben (17, 18) für den Stößel (13, 14) konzentrisch in der Zuhalteeinrichtung geführt ist.10. The device according to claim 9, characterized in that the respective pressure piston (17, 18) for the plunger (13, 14) is guided concentrically in the locking device.
11. Verfahren zum Betreiben der Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Rohling (23) beim Einlegen in die Vorrichtung zunächst zwischen den Stößeln (13, 14) gehalten wird, bevor durch das Zusammenfahren von Pressenstempel und Pressentisch die Werkzeuge zusammengefahren werden. 11. The method for operating the device according to one or more of claims 1 to 10, characterized in that the blank (23) when inserted into the device is initially held between the rams (13, 14) before by moving together the press ram and Press table the tools are moved together.
EP03807787A 2002-10-08 2003-08-09 Device for transverse extrusion of workpieces and operating method for said device Expired - Lifetime EP1551574B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10246940A DE10246940C5 (en) 2002-10-08 2002-10-08 Device for cross-extrusion of workpieces and method for operating such a device
DE10246940 2002-10-08
PCT/EP2003/008865 WO2004033123A1 (en) 2002-10-08 2003-08-09 Device for transverse extrusion of workpieces and operating method for said device

Publications (3)

Publication Number Publication Date
EP1551574A1 true EP1551574A1 (en) 2005-07-13
EP1551574B1 EP1551574B1 (en) 2007-07-25
EP1551574B2 EP1551574B2 (en) 2011-01-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03807787A Expired - Lifetime EP1551574B2 (en) 2002-10-08 2003-08-09 Device for transverse extrusion of workpieces and operating method for said device

Country Status (6)

Country Link
EP (1) EP1551574B2 (en)
AT (1) ATE367872T1 (en)
AU (1) AU2003263206A1 (en)
DE (2) DE10246940C5 (en)
ES (1) ES2287571T5 (en)
WO (1) WO2004033123A1 (en)

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CN103331399A (en) * 2013-02-25 2013-10-02 袁正敏 Double-acting annular cylinder counter-extrusion machine

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Also Published As

Publication number Publication date
EP1551574B2 (en) 2011-01-12
ES2287571T3 (en) 2007-12-16
DE10246940C5 (en) 2008-07-03
AU2003263206A1 (en) 2004-05-04
EP1551574B1 (en) 2007-07-25
ATE367872T1 (en) 2007-08-15
ES2287571T5 (en) 2011-05-20
DE50307782D1 (en) 2007-09-06
DE10246940A1 (en) 2004-04-22
WO2004033123A1 (en) 2004-04-22
DE10246940B4 (en) 2006-11-02

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