WO2012097812A1 - Procédé et dispositif d'emboutissage de tôles - Google Patents

Procédé et dispositif d'emboutissage de tôles Download PDF

Info

Publication number
WO2012097812A1
WO2012097812A1 PCT/DE2012/200002 DE2012200002W WO2012097812A1 WO 2012097812 A1 WO2012097812 A1 WO 2012097812A1 DE 2012200002 W DE2012200002 W DE 2012200002W WO 2012097812 A1 WO2012097812 A1 WO 2012097812A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
holder
tool
sheet metal
movement
Prior art date
Application number
PCT/DE2012/200002
Other languages
German (de)
English (en)
Inventor
Walter Hommel
Original Assignee
Giw Verwaltungs- Und Vertriebs Gmbh
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 Giw Verwaltungs- Und Vertriebs Gmbh filed Critical Giw Verwaltungs- Und Vertriebs Gmbh
Priority to EP12707468A priority Critical patent/EP2512703A1/fr
Publication of WO2012097812A1 publication Critical patent/WO2012097812A1/fr

Links

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
    • B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
    • B21D25/02—Working sheet metal of limited length by stretching, e.g. for straightening by pulling over a die
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/04—Blank holders; Mounting means therefor
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies

Definitions

  • the invention relates to a method and a device for drawing sheet metal by means of a tool upper part, a tool lower part, preferably punch and die, and sheet holder comprehensive drawing device, wherein the sheet to be drawn is held in the edge region by the blank holder and wherein to obtain the necessary strength / Stiffness of the sheet to be drawn over plastic strain a minimum degree of work hardening is caused.
  • the invention relates generally to the drawing of sheets, for example for the production of sheet-metal body parts. These may be vehicle roofs, hoods, etc.
  • the components require sufficient strength and dent resistance over the entire component area, namely to be able to withstand static and dynamic load cases, for example so-called "crackling frogs" and influences by hail.
  • FIGS. 1 to 3 Conventional traction is the most commonly used process in mass production of body components.
  • a drawing mold indicated in FIGS. 1 to 3 with punch, die and sheet holder comes into consideration. sentence.
  • the sheet holder is based on under air pin the drawing system of a press or on spring elements or gas springs.
  • One step on the finished part is used for attachment to the body as a spot welding flange.
  • the drawing stage in the scraping area serves to provide, during the drawing operation, the required stretching material tension, i. to obtain the plastic minimum elongation of the sheet, to produce over the entire component surface.
  • a significant advantage of conventional pulling is that the tool essentially corresponds to the structure of a conventional body tool. It can be used on conventional press lines. In addition, sheet metal loading and component removal can be automated. The formation of the drawing geometry requires only a mold.
  • Stretch ironing is understood to be the depth of a blank with a usually rigid stamp, wherein the workpiece is firmly clamped at the edge.
  • the workpiece can be clamped either between rigid tool parts or with pivotal and movable clamping devices.
  • Stretching is mainly used in the manufacture of relatively flat, large-area components in single, prototype or small batch production, for example in the manufacture of body shell parts, bus and truck bodies, planking parts in aerospace, etc.
  • a major advantage of Stretch-forming process lies in the simple and inexpensive tool design.
  • the board In simple stretch-forming, the board is firmly clamped on two or four sides with collets or other clamping devices.
  • the collets can be made rigidly or vertically rotatable / arranged.
  • the deformation of the sheet is usually carried out by the raising of the punch against the sheet.
  • FIG. 1 A basic structure for stretch drawing is shown in FIG.
  • tangential stretching the sheet is clamped on two or four opposite sides.
  • the clamping devices are horizontally movable. They are driven apart until the entire sheet metal section is plastically pre-expanded by usually 2% to 4%. Subsequently, either the punch moves against the plate or the clamping devices apply the pre-stretched sheet to the punch contour. In both cases, the collets align themselves with the tensile forces, resulting in a tangential application of the sheet to the tool. So there is no relative movement between the sheet and the stamped place. The ironing force always acts tangentially to the stamp surface.
  • the tangential stretch-forming has the advantage of a uniform deformation compared to the simple stretch-forming. It evenens the stress distribution due to the pre-stretching and because of the avoidance of frictional influences. A higher work hardening in the middle areas is achieved. In addition, the residual stresses are reduced by superimposing the tensile stresses. A lower springback of the sheet is the result. The creation of undercuts is possible.
  • tangential stretching reference is made to FIGS. 5 and 6.
  • FIGS 7, 8 and 9 show the basic arrangement and function of a pivot plate holder.
  • a rotating blank holder in the upper part and lower part act together.
  • the present invention is therefore based on the object of specifying both a method and a device for drawing sheet-like components, in particular sheet metal, on the basis of a new tool concept.
  • the following objectives should be fulfilled:
  • the above object is achieved with respect to the inventive method by the features of claim 1.
  • the above object is achieved by the features of the independent claim 9.
  • the method according to the invention is characterized in that during their essentially vertical downward movement, the sheet metal holders simultaneously carry out a movement running transversely to the downward movement, preferably a horizontal movement.
  • the device according to the invention is characterized.
  • the horizontal movement component is preferably carried out by a rotating mechanism, which pushes the blank holder outward during the downward movement away from the stamp.
  • the movable blank holder run on a flat guide.
  • beads can be added to the pivot plate holders.
  • the beads can be placed in the upper or lower plate holder as required.
  • the location and shape of the beads are conventional, i. according to the prior art.
  • FIG. 1 is a schematic view, in a schematic diagram, the conventional pulling with a drawing mold (prior art),
  • FIG. 2 in a schematic sectional view of the conventional
  • FIG. 3 in a schematic sectional view of the subject matter
  • 10 to 50 show schematic views of different embodiments of devices according to the invention, which operate according to the principle of the invention and use the method according to the invention.
  • the tool structure shown in Fig. 10 shows the top view of the drawing tool with four movable sheet metal holders in outline.
  • the number and size of the blank holder can vary depending on the requirement. In order to obtain an equilibrium of forces, it is advantageous to provide at least two plate holders, which lie opposite one another.
  • the plate holders are movably mounted in the upper and lower part and move away from the punch during the downward stroke. For this purpose, move the lower plate holder in the carrier sheet holder, which in turn sits on pressure pins, which in turn rely on a pressure unit not described in detail here.
  • the configuration with sheet metal holders that only move outwards in the downstroke is the simplest variant. It fulfills objectives 1 to 4 and 6, mainly for simple components without a step.
  • the extension of the sheet takes place primarily by movement of the two sheet holder to the outside. Due to the linear movement of the blank holder blank holder and beads in a simple form according to the prior art are applicable. This operating principle is shown in FIGS. 12, 13 and 14 shown.
  • the tool function in three stations is shown in Fig. 15 (upper position), 16 (intermediate position) and 17 (end position).
  • the movements of the blank holder preferably takes place via at least one rotating element (see Figures 14-18 and 21-41).
  • Fig. 12 shows the basic structure of the novel tool with multi-functional plate holder in the closed state.
  • Fig. 13 shows the novel tool in 2 stations:
  • the tool is in the closed position. All elements essential for the function are shown and marked. For the sake of simplicity has been dispensed with a representation of the bead.
  • Fig. 15 shows the tool in the upper position (station 1).
  • an unspecified power unit which transmits a force F on the carrier plate holder via pressure bolts.
  • the power unit normally works on displacement.
  • the force F arises as soon as the upper sheet metal holder touches down on the sheet metal and the Beading forms.
  • the pressing force is transmitted via the guide and the carrier plate holder on the pressure pin.
  • the drawing process begins.
  • a connecting rod is supported on bearing shells.
  • the connecting rod moves and pushes the two plate holders outwards with a rotary motion.
  • the sheet is stretched.
  • FIG. 16 shows the connecting rod in an intermediate position.
  • the rotary movement of the connecting rod moves both movable sheet holder outwards and the sheet is stretched.
  • Fig. 17 shows the lowest position of the connecting rod.
  • the sheet is fully extended.
  • the part form is finished.
  • the sheet tightens only slightly over the punch.
  • a significant advantage over the conventional drawing here is that towards the end of the drawing process, the expansion and pulling force increases to zero.
  • the return stroke is due to the fact that the connecting rod rotates further downwards beyond the horizontal position. This has the advantage that e.g. when forming a step, the sheet is released controlled while maintaining the tension. As a result, a tear-free shaping of the stage is ensured.
  • the required force for the return stroke is normally applied by the tension of the sheet and / or the spring element.
  • the return stroke an additional element such.
  • Fig. 19 shows a variant with flat guide.
  • the tool structure essentially corresponds to the tool design according to FIG. 14. However, no drive is present.
  • the sheet holders slide along a vertical sliding plate in the working direction downward.
  • This design can, for. B. are used when the part form is very strongly curved in this subarea, thereby creating a sufficiently large extension.
  • an extension of the sheet is realized at the beginning of the forming process, followed by a purely vertical method of the sheet holder followed. However, it can also be represented by a vertical stroke, followed by a Ausreck movement. This is particularly advantageous when it is necessary to compensate for a drawing depth that is greatly different over the circumference of the component. This would mean in conventional pulling a circumferentially large depth of the drawing shell.
  • Fig. 20 shows a variant with driver slope.
  • the tool structure essentially corresponds to the tool construction according to FIG. 14.
  • the lower sheet holder slides down along a wedge slope and thereby extends the sheet. It is also a combination with connecting rod and vertical slide plate possible, which can then be installed offset in image plane.
  • the spring ensures that the movable plate holder always rests against the driver's slope.
  • Fig. 21 shows a variant with sprung insert for stroke limitation.
  • the tool is shown in the contracted state.
  • the tool structure corresponds to that of Fig. 14.
  • the upper sheet holder is additionally on a sprung insert. This structure can be used when, due to the entire parts and blank holder shape locally a large drawing depth is required. If all conditions are met, it can save a lot of tin. Compared with the conventional construction, this is possible because the blank holder consists in the outline of several individual elements.
  • the upper sheet holder is also available on a sprung insert.
  • FIG. 22 shows a comparison between the prior art (drawing depth conventional) and the embodiment according to the invention (drawing depth for multifunctional sheet holder) in a schematic representation. Due to part shape and the limited design possibilities of the one-piece plate holder, it can sometimes come to large drawing depths in conventional pulling.
  • Fig. 23-25 shows an embodiment of the tool according to the invention in 3 stations.
  • Fig. 26 shows a variant with rotatably mounted drivers.
  • the tool structure is preferably used for the production of undercuts.
  • the tool is shown in the closed state. This embodiment can preferably be used for pulling inner parts.
  • Version 1 The undercut is small. The elastic springing of the drawn part is sufficient to be able to remove it upwards out of the tool.
  • Version 2 The undercut is so large that the elastic springback is insufficient to remove the drawn component.
  • a filling slide is installed in this case, which moves back and releases the part for removal.
  • driver bevel FIG. 20
  • These elements are not drawn then installed offset to the illustrated drive.
  • a preferred embodiment with a rotatably mounted drivers (Fig. 31 to 33) is used. Between the fulcrums 2 sliding elements are installed, whereby during the rotation also a shift of arises two elements to each other. At the beginning and end of the rotary movement, the position of the driver is defined by a stop.
  • This drive is not limited to use with the multi-functional plate holder, but can also be used as a slider drive, for example.
  • Figs. 27 to 30 show the procedure of the tool in 4 stations: Station 1:
  • the sheet holder is closed. From now on, the working stroke begins.
  • the blank holder runs down on a guide surface (not illustrated) (FIG. 27).
  • the two rotatably mounted drivers have the first contact. From now on, the upper guide surface initially slides along the lower guide surface and moves the blank holder outwards. Following this, the rotational movement begins. This movement is necessary to ensure a safe transfer from the vertical guide in the undercut (Fig. 28).
  • the drive unit has reached its maximum deflection.
  • the sheet holder is in the rearmost position. From now on, the blank holder moves back to the punch (Fig. 29).
  • the tool has reached the end position.
  • the plate holder has formed the undercut when driving inwards. Since a guide element moves against a stop, the lower sheet holder moves towards the end of the drawing along a defined slope. The force of the spring elements ensures that the rotatably mounted drivers always have contact and the repeatability is ensured (FIG. 30).
  • Figures 31-33 again show the rotatably mounted drivers from the stations shown in Figures 28-30.
  • the stops 1 and 2 guarantee a defined position at the beginning and end of the movement.
  • Fig. 34 shows an alternative drive, building on the drive principle of FIG. 17. Thereafter, it is possible to keep the mold closed and to move the anvil. On a possible drive this support bearing is not discussed. Without application example.
  • Fig. 35 shows an alternative drive with bearing pin.
  • Fig. 35 shows the arrangement in the open state.
  • Fig. 36 shows the drive in detail.
  • Fig. 37 shows the arrangement in the closed state.
  • Fig. 38 shows this drive with additional movement.
  • the sheet metal holder drive is in the open state. Hydraulic presses regularly require a certain ram travel at the beginning of the stroke, namely until the hydraulic medium is compressed and the full pressing force is built up. The full pressing force is required to form the bead. When using on a hydraulic press, a precaution must be taken so that the stretching stroke does not begin until the bead has been formed, thus ensuring a controlled drawing process.
  • FIG. 39 an additional movement and an accelerated return stroke are provided.
  • the plate holder drive is shown in the uppermost position with a displacement unit for an accelerated or increased return stroke.
  • the pivot point "A" is moved towards the end of the drawing process.
  • FIG. 39 shows the alternative drive with additional movement with closed draw bead at the beginning of the drawing process.
  • Fig. 40 shows the sheet holder drive gem. Figure 39 in an intermediate position. The driver surface of the movable guide unit strikes the driver plate. From now on, the additional return stroke begins.
  • FIG. 41 shows the principle shown in FIG. 39 in the end position.
  • the pivot point "A" is shifted upwards in the direction of the arrow.
  • Figure 42 shows a main sheet holder of conventional construction, in which two clamping plate holder are used. These two movable clamping plate holders sit on the matrix and in the main sheet holder.
  • the upper clamping plate holder (in the die) preferably runs horizontally and is inclined from the lower Clamping plate holder driven. The drive is done by a locking not described in detail. It is also possible to put the obliquely running clamping plate holder up into the die and the horizontally running clamping plate holder down into the main sheet holder.
  • Fig. 43 shows the tool acc. Fig. 42 in the raised state.
  • Main sheet holder and lower clamping plate holder are in top position.
  • the clamping plate holder sits on the plate, the bead is formed. From now on, the stretching process begins.
  • the clamping plate holders move together outwards and stretch the plate.
  • Fig. 44 shows the tool acc. Figures 42 and 43 in an intermediate position with fully vorgerecktem sheet. The die has moved together so far that the clamping plate holder is at the level of the main plate holder. From now on, the actual drawing process begins. This ends when the tool as shown in FIG. 42 is completely closed.
  • FIG. 46 shows the tool according to FIG. 45 in an intermediate position after a stretching stroke has taken place.
  • the blank holder is now circumferentially closed (also in the corners) over the entire surface. From now on, the actual drawing process begins.
  • FIG. 47 shows the basic tool structure corresponding to the illustration from FIG. 42. Deviating from the illustration from FIG. 42, the force of the clamping plate holder is guided there via the deflection unit onto the pressure bolts.
  • the part is raised vertically by the main sheet holder. This is possible because the pressure bolts lag behind the press. Thus, the part can be lifted and removed without deformation.
  • the force of the spring elements can be reduced. Also a combination of the variants acc. Fig. 45 (upper clamping plate holder) and Fig. 47 (lower clamping plate holder) may be possible and useful.
  • Fig. 48 shows deviating from all the previously described tool assemblies a clamping plate holder, which sits in the lower part and is also driven via the lower part.
  • the drive is similar to a conventional slider.
  • FIG. 49 shows the tool structure shown in FIG. 48 with the clamping plate holders in the raised state. The strokes are shown.

Abstract

L'invention concerne un procédé et un dispositif d'emboutissage de tôles au moyen d'un dispositif d'emboutissage comprenant une partie supérieure d'outil, une partie inférieure d'outil, de préférence un poinçon et une matrice, ainsi que des serre-tôles, la tôle à emboutir étant maintenue par serrage dans la zone de bord par les serre-tôles et, pour obtenir la solidité/rigidité nécessaire de l'élément à emboutir, un minimum d'écrouissage étant réalisé par étirement plastique. L'invention est caractérisée en ce que les serre-tôles, pendant leur déplacement sensiblement vertical vers le bas, effectuent également un déplacement transversal par rapport au déplacement descendant, de préférence un déplacement horizontal. L'invention concerne également un dispositif correspondant d'emboutissage de tôles pour la mise en œuvre dudit procédé.
PCT/DE2012/200002 2011-01-21 2012-01-23 Procédé et dispositif d'emboutissage de tôles WO2012097812A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12707468A EP2512703A1 (fr) 2011-01-21 2012-01-23 Procédé et dispositif d'emboutissage de tôles

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE102011009189.0 2011-01-21
DE102011009189 2011-01-21
DE102011107679.8 2011-07-13
DE102011107679 2011-07-13
DE102011085261 2011-10-26
DE102011085261.1 2011-10-26
DE201210200879 DE102012200879A1 (de) 2011-01-21 2012-01-23 Verfahren und Vorrichtung zum Ziehen von Blechen
DE102012200879.9 2012-01-23

Publications (1)

Publication Number Publication Date
WO2012097812A1 true WO2012097812A1 (fr) 2012-07-26

Family

ID=45808036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2012/200002 WO2012097812A1 (fr) 2011-01-21 2012-01-23 Procédé et dispositif d'emboutissage de tôles

Country Status (3)

Country Link
EP (1) EP2512703A1 (fr)
DE (1) DE102012200879A1 (fr)
WO (1) WO2012097812A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014166839A1 (fr) * 2013-04-10 2014-10-16 Thyssenkrupp Steel Europe Ag Procédé et outil à comprimer servant à fabriquer des demi-coques de grandes dimensions
FR3047680A1 (fr) * 2016-02-12 2017-08-18 Peugeot Citroen Automobiles Sa Presse destinee a mettre en forme par un procede d’emboutissage un flan de tole et procede d’emboutissage correspondant
CN108655246A (zh) * 2018-05-08 2018-10-16 秦皇岛速泰科技有限公司 拉伸装置
EP3315224B1 (fr) * 2016-10-26 2020-04-08 PSA Automobiles SA Presse destinée à mettre en forme un flan de tôle et procédé de maintenance d'une telle presse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020105396A1 (de) 2020-02-28 2021-09-02 Universität Stuttgart Verfahren und Vorrichtung zum Zugdruckumformen eines Blechs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09150224A (ja) * 1995-11-29 1997-06-10 Daihatsu Motor Co Ltd 板金プレス成形方法及び成形装置
DE10334483A1 (de) * 2003-07-29 2005-03-10 Daimler Chrysler Ag Verfahren und Ziehwerkzeug zum Herstellen eines Blechteils aus einer Platine
FR2897001A3 (fr) * 2006-02-06 2007-08-10 Renault Sas 02ocede et outil d'emboutissage d'un flan metallique.
DE102006040893B3 (de) * 2006-08-31 2008-01-10 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Blechbauteils für Kraftfahrzeuge
DE102010048406A1 (de) * 2010-08-09 2012-02-09 Giw Gesellschaft Für Innovative Werkzeugsysteme Mbh Verfahren und Vorrichtung zum Ziehen von Blechen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09150224A (ja) * 1995-11-29 1997-06-10 Daihatsu Motor Co Ltd 板金プレス成形方法及び成形装置
DE10334483A1 (de) * 2003-07-29 2005-03-10 Daimler Chrysler Ag Verfahren und Ziehwerkzeug zum Herstellen eines Blechteils aus einer Platine
FR2897001A3 (fr) * 2006-02-06 2007-08-10 Renault Sas 02ocede et outil d'emboutissage d'un flan metallique.
DE102006040893B3 (de) * 2006-08-31 2008-01-10 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Blechbauteils für Kraftfahrzeuge
DE102010048406A1 (de) * 2010-08-09 2012-02-09 Giw Gesellschaft Für Innovative Werkzeugsysteme Mbh Verfahren und Vorrichtung zum Ziehen von Blechen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014166839A1 (fr) * 2013-04-10 2014-10-16 Thyssenkrupp Steel Europe Ag Procédé et outil à comprimer servant à fabriquer des demi-coques de grandes dimensions
CN105307790A (zh) * 2013-04-10 2016-02-03 蒂森克虏伯钢铁欧洲股份公司 高尺寸精度的半壳体的生产方法及顶锻设备
US10081043B2 (en) 2013-04-10 2018-09-25 Thyssenkrupp Steel Europe Ag Method and upsetting tool for producing highly dimensionally accurate half shells
FR3047680A1 (fr) * 2016-02-12 2017-08-18 Peugeot Citroen Automobiles Sa Presse destinee a mettre en forme par un procede d’emboutissage un flan de tole et procede d’emboutissage correspondant
EP3315224B1 (fr) * 2016-10-26 2020-04-08 PSA Automobiles SA Presse destinée à mettre en forme un flan de tôle et procédé de maintenance d'une telle presse
CN108655246A (zh) * 2018-05-08 2018-10-16 秦皇岛速泰科技有限公司 拉伸装置

Also Published As

Publication number Publication date
DE102012200879A1 (de) 2012-08-09
EP2512703A1 (fr) 2012-10-24

Similar Documents

Publication Publication Date Title
DE3515465A1 (de) Verfahren und vorrichtung zum formen einer behaelterkappe
DE2948115A1 (de) Verfahren und vorrichtung zum formen von eine naht aufweisenden rohren von bogenfoermigem querschnitt aus flaechigem material, insbesondere blech
EP2629901B1 (fr) Presse d'emboutissage à maintien dynamique optimisé de la tôle et methode d'emboutissage
DE60201504T2 (de) Verfahren und vorrichtung zum einhalsen der öffnung eines behälters
EP2512703A1 (fr) Procédé et dispositif d'emboutissage de tôles
DE102011011438A1 (de) Herstellung einer Planetenträgerverbindung durch partielle Umformung im Rollverfahren
EP2086844A1 (fr) Machine d'emballage à entraînement pneumatique/hydraulique ajustable
DE19842750B4 (de) Verfahren und Herstellung von tiefgezogenen Hohlteilen und Ziehwerkzeug
EP1526931B1 (fr) Procede de gestion du flux de matieres lors d'un processus d'emboutissage de toles et outil d'emboutissage
DE102007012316A1 (de) Verfahren und Anbiegepresse zum Anbiegen der Randstreifen eines zu einem Schlitzrohr zu formenden Bleches
DE19717953A1 (de) Verfahren zum hydromechanischen Stülpziehen von Metallblechen
WO2006048302A1 (fr) Procede pour transformer une platine pour toles de grande surface en une piece moulee, telle qu'une partie exterieure d'une carrosserie de vehicule
DE10334483B4 (de) Verfahren und Ziehwerkzeug zum Herstellen eines Blechteils aus einer Platine
DE3117293A1 (de) Einrichtung zum schneiden linear bewegten materials in einzellaengen
EP1568423A1 (fr) Procédé de préformage d'une ébauche par des rouleaux
WO2012062244A1 (fr) Procédé et dispositif de façonnage d'une pièce
DE102013004960A1 (de) Verfahren und Vorrichtung zur Herstellung einer Stauchniet-Verbindung mit einer rotativen Pendelbewegung
DE19856950B4 (de) Vorrichtung und Verfahren zur Herstellung von Sickenblechen mit mehreren geschlossenen Sicken
WO2012037915A1 (fr) Procédé et dispositif d'emboutissage de tôles
DE2257210A1 (de) Verfahren und vorrichtung zur herstellung eines metallenen dosenkoerpers
DE102014110400B4 (de) Etagenpressumformwerkzeug
WO2012045292A1 (fr) Procédé et dispositif d'emboutissage de tôles
EP2490835A1 (fr) Procédé et dispositif pour façonner des pièces planes
DE10230071C1 (de) Zuhaltevorrichtung
DE102004006126A1 (de) Presse mit verriegeltem Stößel

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2012707468

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12707468

Country of ref document: EP

Kind code of ref document: A1