EP1534445B1 - Umformwerkzeug - Google Patents

Umformwerkzeug Download PDF

Info

Publication number
EP1534445B1
EP1534445B1 EP03713164A EP03713164A EP1534445B1 EP 1534445 B1 EP1534445 B1 EP 1534445B1 EP 03713164 A EP03713164 A EP 03713164A EP 03713164 A EP03713164 A EP 03713164A EP 1534445 B1 EP1534445 B1 EP 1534445B1
Authority
EP
European Patent Office
Prior art keywords
tool
forming
cutting
forming tool
diaphragm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03713164A
Other languages
English (en)
French (fr)
Other versions
EP1534445A1 (de
Inventor
Keijo Hellgren
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.)
Avure Technologies AB
Original Assignee
Avure Technologies AB
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 claimed from SE0201489A external-priority patent/SE525494C2/sv
Application filed by Avure Technologies AB filed Critical Avure Technologies AB
Publication of EP1534445A1 publication Critical patent/EP1534445A1/de
Application granted granted Critical
Publication of EP1534445B1 publication Critical patent/EP1534445B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/021—Deforming sheet bodies
    • B21D26/023—Deforming sheet bodies including an additional treatment performed by fluid pressure, e.g. perforating
    • 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
    • B21D22/10—Stamping using yieldable or resilient pads
    • B21D22/12—Stamping using yieldable or resilient pads using enclosed flexible chambers
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/021—Deforming sheet bodies
    • B21D26/027—Means for controlling fluid parameters, e.g. pressure or temperature
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/021—Deforming sheet bodies
    • B21D26/031—Mould construction

Definitions

  • the present invention relates to a forming tool for forming sheet blanks in a diaphragm press of the kind comprising an openable, closed pressure chamber, which is divided in a gas and liquid tight manner by means of a flexible diaphragm, the forming tool being adapted to be arranged on one side of the diaphragm and a sheet blank to be formed being adapted to be arranged between the forming tool and the diaphragm, while the opposite side of the diaphragm is adapted to be pressurised by a fluid being supplied at high pressure to cause the flexible diaphragm to deform and, thus, the sheet blank to be pressed against the forming tool, the forming tool further comprising a cutting edge, so that the sheet blank is both formed into the desired shape and cut to the desired size in a single forming step.
  • diaphragm presses In connection with forming sheet blanks, such as sheets of steel or aluminium for use in vehicles, it is known to use so-called diaphragm presses of the kind described above.
  • a forming tool is provided in a closed press chamber and the sheet blank to be formed is arranged between the forming tool and an elastic diaphragm of rubber or a polymer, which divides the press chamber in two separate chamber portions in a gas and liquid tight manner.
  • the diaphragm By supplying a liquid at high pressure at the opposite side of the diaphragm, the diaphragm will be deformed and press the sheet blank against the forming tool whereby the blank obtains the desired shape.
  • Forming using diaphragm presses of this kind is particularly advantageous in conjunction with relatively small production runs, since the cost of manufacturing the forming tools is relatively low.
  • the blank in every other kind of forming operation, it is desirable that, to the utmost possible extent, the blank be formed into a finished product in one single forming step, thereby avoiding, as far as possible, any subsequent machining that would increase the costs.
  • the blank in the forming operation, the blank be cut to the correct size and shape and that, if desired, flanged edges be formed, said flanged edges being used, for example, for attaching the finished blank and for connecting it to other structural elements of the end product, such as a vehicle.
  • EP 0 288 705 discloses a forming tool for diaphragm presses by means of which it is possible to cut the sheet-metal blank to the desired size and to form a flanged edge along the periphery of the cut sheet-metal blank. This is achieved by the forming tool having cutting bars with a sharp cutting edge along the circumference of the forming tool and recesses for forming the flanged edges after cutting. During the forming process, the sheet-metal blank will, at a certain degree of deformation, be pressed against the cutting edges, which will cause the sheet to rupture and be cut off to the predetermined size, flanged edges being then formed at the cut-off edge portions by said portions being pressed into the recesses provided therefor in the forming tool.
  • the present invention aims at providing an improved forming tool for diaphragm presses, which allows the sheet blank to be cut to the desired size and a flanged edge to be formed by bending along at least part of the periphery of the sheet-shaped blank and/or along a circumferential edge of an opening therein in a single forming step, while ensuring a high degree of dimensional accuracy and shape permanence as well as a finished product of high quality.
  • An additional advantage obtained by means of the forming tool according to the invention is that it is easier to remove both the formed product and the remaining surplus or scrap after the forming operation. At least said objects and advantages are obtained by means of a forming tool according to claim 1.
  • the forming tool in the places where the sheet blank is to be cut and bent to form a flanged edge, is provided with an elongate cutting and flanging tool, which is displaceable with the aid of actuating means towards and away from the diaphragm in a slot in the forming tool.
  • the forming tool can comprise, as shown and described also in connection with the following working examples, such a cutting and flanging tool for the purpose of cutting the sheet-metal blank and bending it to form a flanged edge along the whole periphery of the blank.
  • a cutting and flanging tool could also be adapted to cut the blank and bend it to form a flanged edge along the circumference of an opening therein, for example for the purpose of forming window and ventilation openings in car body panels. It would also be conceivable to form a flanged edge by cutting and bending along only part of a body panel edge or a circumferential edge of an opening in the blank. In such cases, the cutting and flanging tool does not need to extend continuously in a closed loop, but may be arranged along a limited section having a beginning and an end.
  • the cutting and flanging tool is, in an initial position, flush with the forming surface.
  • the cutting function is achieved by the cutting and flanging tool being provided with a sharp shoulder edge, which serves as a cutting edge and which, conveniently, can have a height 1-3 times the thickness of the sheet blank to be formed.
  • the blank is cut along said edge, the cutting thus being effected before the blank has been deformed to a significant degree. Owing to the small depth of the recess, its negative influence on the blank, perpendicularly to the lateral contraction, in connection with any prestretching will be insignificant.
  • the cutting edge on the cutting and flanging tool, it is easy to provide a flanged edge of varying width by forming the cutting edge at different distances from the edge of the cutting and flanging tool that is oriented towards the forming surface of the forming tool against which the blank is formed.
  • the cutting and flanging tool is moved towards and away form the diaphragm with the aid of an arbitrary type of actuating means.
  • the actuating means is formed of a plurality of hydraulically operated pistons arranged at intervals of about 100 mm.
  • other types of actuating means are also conceivable. At low pressures, pneumatic pistons could be used, for instance.
  • the inward displacement of the cutting and flanging tool is controlled by the pressing pressure being exerted, by way of the diaphragm, on a release valve, which, when the pressure is high enough, is pressed inwards and actuates a valve body, which drains the hydraulic system of the pistons, thus allowing the cutting and flanging tool to be forced inwards by the pressing pressure exerted thereon.
  • the diaphragm will press the edge portion of the cut blank into the slot in the cutting and flanging tool, so that said edge portion will form an inwardly bent flanged edge.
  • both the finished product and the cut-off scrap can be easily disengaged from the forming tool by the actuating means being caused to displace the cutting and flanging tool outwards.
  • the cutting and flanging tool will thus disengage the finished product and the scrap and press them out of the forming tool. In many cases, the product and the scrap will stick firmly to the forming tool.
  • Fig. 1 is a cross section through a diaphragm press with a forming tool according to the invention arranged therein for forming car body panels.
  • Fig. 2 is a top view of the bottom tray of the diaphragm press in Fig. 1 .
  • Figs 3-6 are schematic partial cross sections through the cutting and flanging tool and a release valve of the forming tool according to the invention at different pressing pressure levels.
  • Figs 7 and 8 are partial cross sections similar to those in Figs 3-6 , which illustrate the function of the release valve in greater detail.
  • Fig. 9 is a pressure/time chart illustrating the pressure levels during different time intervals of a forming cycle.
  • the forming tool is used for forming sheet-metal blanks for the automotive industry.
  • Fig. 1 is a cross section through a diaphragm press 1.
  • the latter includes a bottom tray 2 and an upper part 3, which, when brought together as shown in the figure, define a closed pressure chamber 4.
  • a flexible diaphragm 5 is arranged between the bottom tray 2 and the upper part 3, which diaphragm provides a gas and liquid tight shield between the bottom tray 2 and the upper part 3.
  • a forming tool 6 according to the invention having an annular cutting and flanging tool 7 is arranged in the bottom tray.
  • Edge elements 8 with schematically illustrated stretching means 9, 9' are provided between the forming tool 6 and the side walls of the bottom tray 2, and both the forming tool and the edge elements 8 rest on a bottom plate 10.
  • a sheet-metal blank 11 to be formed is arranged between the forming tool 6 and the diaphragm 5, two opposite side edges thereof being inserted in the stretching means 9, 9', as shown in Fig. 1 .
  • the stretching means 9, 9' allow the sheet-metal blank to be prestretched in one direction to the yield point of the material, or preferably slightly beyond the yield point.
  • An excess pressure is then applied in the press chamber 4 on the upper side of the diaphragm 5 by a liquid, preferably oil, being supplied at high pressure by means of a schematically illustrated pump 12 from a storage tank 13. Since the pressure on the upper side of the diaphragm 5 is increased, the latter will be pressed against the sheet-metal blank 11 and the forming tool 6, the shape of whose upper side corresponds to the desired shape of the formed end product.
  • Fig. 2 is a schematic top view of the bottom tray 2 with a forming tool 6 arranged therein.
  • the forming tool shown in the figure is intended for forming sheet-metal blanks into car hoods and the annular cutting and flanging tool 7 extends along the peripheral edges of the car hood to be formed.
  • a release valve 14, which is schematically illustrated in the lower left corner of the figure, will be described in more detail below.
  • Figs 3-6 illustrate the function of the forming tool according to the invention and, in particular, the function of the forming tool's cutting and flanging tool 7.
  • the latter is arranged in a slot in the forming tool and its outer surface has a shoulder-shaped cross section achieved by a recess 15 being made along an edge of the cutting and flanging tool 7, said recess being located closest to the forming surface 16 against which the sheet-metal blank 11 is to be formed.
  • a cutting edge 17 is formed between the outermost outer surface of the cutting and flanging tool 7 and said recess 15.
  • the recess 15 has a rectangular cross section.
  • the cutting and flanging tool 7 is operable by means of a plurality of hydraulic cylinders 18 provided at intervals of about 100 mm along the whole circumference of the cutting and flanging tool 7.
  • the figures also show the release valve 14, the outer surface of which is located slightly within the outer surface of the forming tool.
  • the release valve 14 is spring-loaded towards the exterior by means of cup springs 19 and the innermost end of the release valve comprises a valve body 20, which is capable of closing and opening a passage in a hydraulic pipe 21.
  • a pressure has been applied to the outside of the diaphragm 5 causing it to be pressed against the sheet-metal blank 11, and the pressure is high enough for a hole to have been stamped in the sheet-metal blank 11 along the periphery of a hole in which the release valve 14 is disposed.
  • the force of the spring 19 is so great that the passage in the hydraulic pipe 21 remains closed.
  • Fig. 7 which corresponds to Fig. 3
  • the forming tool 6 is in an initial position, the sheet-metal blank 11 being stretched over it with the aid of the stretching means 9, 9'.
  • a pump 23 is used to generate a pressure in a hydraulic pipe 24, which extends through the bottom plate 10 to each of the hydraulic cylinders 18, such that the cutting and flanging tool 7 is displaced upwards and its outermost surface is flush with the forming surface 16 of the forming tool.
  • the pressure in the pipe 24 is maintained by means of a check valve 25 and as long as the passage in the pipe 21, which communicates with the pipe 24, is closed by the valve body 20 owing to the fact that the release valve 14 is pressed outwards by the spring 19, no hydraulic liquid can be evacuated there either.
  • Fig. 8 which corresponds to Fig. 6 , the diaphragm (not shown in this figure) has pressed the release valve 14 down, so that the passage in the pipe 21 is open. This allows hydraulic liquid to be evacuated through the pipe 21 and the pressure in the hydraulic cylinders 18 to be released. The diaphragm then causes an inward displacement of the cutting and flanging tool 7 and the flanged edge 22 is bent along the periphery of the sheet-metal blank.
  • the release valve 14 will return to its initial projecting position, thus causing the passage in the hydraulic pipe 21 to close.
  • the hydraulic cylinders 18 will cause an outward displacement of the cutting and flanging tool 7 and both the finished product and the remaining scrap will be displaced outwards and disengaged from the forming tool.
  • Fig. 9 shows a pressure/time chart illustrating the pressure in the press chamber during different time intervals of the forming operation.
  • A the sheet-metal blank 11 is stretched with the aid of the stretching means 9, 9' to the yield point of the material.
  • the press chamber is then pressurised in such manner that the diaphragm 5 is pressed against the sheet-metal blank 11 and the forming tool, and at B the hole is cut out above the release valve 14.
  • point C is reached, at which the sheet-metal blank is cut along the cutting edge 17 of the cutting and flanging tool 7.
  • point C is reached, at which the release valve 14 is pressed inwards by the diaphragm, so that he hydraulic pistons 18 are drained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Magnetic Heads (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (6)

  1. Formwerkzeug zum Formen von Blechzuschnitten in einer Membranpresse (1) der Art, die eine geschlossene Druckkammer (4) umfasst, die geöffnet werden kann und die mit Hilfe einer flexiblen Membran (5) auf eine gas- und flüssigkeitsdichte Weise geteilt ist, wobei das Formwerkzeug (6) eingerichtet ist, um auf einer Seite der Membran angeordnet zu werden, und ein zu formender Blechzuschnitt (11) eingerichtet ist, um zwischen dem Formwerkzeug und der Membran angeordnet zu werden, während die gegenüberliegende Seite der Membran eingerichtet ist, um durch ein Fluid unter Druck gesetzt zu werden, das mit hohem Druck zugeführt wird, um zu bewirken, dass sich die flexible Membran verformt und somit der Blechzuschnitt gegen das Formwerkzeug gepresst wird, wobei das Formwerkzeug des Weiteren eine Schneidkante umfasst, so dass der Blechzuschnitt in einem einzigen Formschritt sowohl zu der gewünschten Form geformt als auch zu der gewünschten Größe geschnitten wird, dadurch gekennzeichnet, dass das Formwerkzeug (6) ein längliches Schneid- und Flanschwerkzeug (7) wenigstens entlang einem Teil seines Umfangs und/oder um eine geplante Öffnung in dem Blechzuschnitt (11) herum umfasst, wobei das Schneid- und Flanschwerkzeug eine Schneidkante (17) aufweist und, mit Hilfe einer Betätigungseinrichtung (18), in einem länglichen Schlitz in dem Formwerkzeug zu der Membran (5) hin und von der Membran (5) weg derartig verschoben werden kann, dass, bei einem ersten Pressdruck, bewirkt wird, dass der Blechzuschnitt an der Schneidkante abgeschnitten wird, und, wenn der Druck kontinuierlich erhöht wird, bewirkt wird, dass das Schneid- und Flanschwerkzeug in den Schlitz in dem Formwerkzeug hinein von der Membran weg derartig verschoben wird, dass die Umfangskante des Blechzuschnitts und/oder die Umfangskante um eine darin befindliche Öffnung herum während des Formens einer geflanschten Kante (22) an dem Blechzuschnitt zu dem Inneren des Schlitzes hin verformt wird/werden.
  2. Formwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Betätigungseinrichtung eine Vielzahl von Hydraulikzylindern (18) entlang der Längsausdehnung des Schneid- und Flanschwerkzeugs (7) umfasst.
  3. Formwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schneidkante (17) des Schneid- und Flanschwerkzeugs (7) durch eine Aussparung (15) entlang einer Längskante des Schneid- und Flanschwerkzeugs geformt ist, die zu einer Formfläche (16) des Formwerkzeugs (6) hin ausgerichtet ist, wobei die Breite der Aussparung der Breite der geflanschten Kante (22) entspricht, die zu formen ist.
  4. Formwerkzeug nach Anspruch 3, dadurch gekennzeichnet, dass die Aussparung (15) des Schneid- und Flanschwerkzeugs (7) eine variierende Breite entlang ihrer Längsausdehnung aufweist, um eine geflanschte Kante (22) variierender Breite zu formen.
  5. Formwerkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass, in einer anfänglichen, vorstehenden Position, eine äußerste Fläche des Schneid- und Flanschwerkzeugs (7) mit einer Formfläche (16) des Formwerkzeugs (6) bündig ist.
  6. Membranpresse, umfassend ein Formwerkzeug (6) nach einem der vorhergehenden Ansprüche.
EP03713164A 2002-05-15 2003-04-02 Umformwerkzeug Expired - Lifetime EP1534445B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE0201489A SE525494C2 (sv) 2002-05-15 2002-05-15 Formningsverktyg samt membranpress innefattande sådant formningsverktyg
US38417502P 2002-05-29 2002-05-29
US384175P 2002-05-29
SE0201489 2002-09-02
PCT/SE2003/000525 WO2003097268A1 (en) 2002-05-15 2003-04-02 Forming tool

Publications (2)

Publication Number Publication Date
EP1534445A1 EP1534445A1 (de) 2005-06-01
EP1534445B1 true EP1534445B1 (de) 2008-08-27

Family

ID=29552450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03713164A Expired - Lifetime EP1534445B1 (de) 2002-05-15 2003-04-02 Umformwerkzeug

Country Status (5)

Country Link
EP (1) EP1534445B1 (de)
AT (1) ATE406224T1 (de)
AU (1) AU2003217130A1 (de)
DE (1) DE60323238D1 (de)
WO (1) WO2003097268A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117681478B (zh) * 2024-02-04 2024-04-26 西南石油大学 一种氢燃料电池双极板液压成型一体化装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU940930A1 (ru) * 1980-04-10 1982-07-07 Предприятие П/Я В-8772 Комбинированный штамп дл вырубки ,выт жки и формовки деталей из полосы
DE3709181A1 (de) * 1987-03-20 1988-09-29 Asea Ab Verfahren zur herstellung von komplizierten blechteilen und werkzeug fuer die druckumformung solcher blechteile
US5649438A (en) * 1994-06-14 1997-07-22 Owens-Corning Fiberglas Technology, Inc. Method and apparatus for pneumatic forming of thin foil materials
US6178796B1 (en) * 1998-06-01 2001-01-30 Flow Holdings Gmbh (Sagl) Llc Device and method for shaping flat articles
DE19951850C1 (de) * 1999-10-28 2001-01-25 Metallwarenfabrik Reichertshof Verfahren und Vorrichtung zur Herstellung von Formteilen

Also Published As

Publication number Publication date
ATE406224T1 (de) 2008-09-15
WO2003097268A1 (en) 2003-11-27
DE60323238D1 (de) 2008-10-09
EP1534445A1 (de) 2005-06-01
AU2003217130A1 (en) 2003-12-02

Similar Documents

Publication Publication Date Title
Nakagawa et al. Various applications of hydraulic counter-pressure deep drawing
US9375775B2 (en) Hydromechanical drawing process and machine
CA2006773C (en) Method and device for pressing sheet material with a deformable punch under a ram
Amino et al. Counter-pressure deep drawing and its application in the forming of automobile parts
KR100488097B1 (ko) 금속판의 액압벌징 성형방법, 금형 및 성형품
US3435653A (en) Forming method and apparatus
US9174259B2 (en) Method and apparatus for sharp flanging and trimming sheet metal panels
US4195510A (en) Draw bead having alternating pressure surfaces and grooves
US8701453B2 (en) Method of reducing cycle time in a hydro-mechanical forming process and a tool for hydro-mechanically forming a part
US4770015A (en) Process and device for press-forming sheet material having a small elongation
US7155948B2 (en) Forming tool
US20200230688A1 (en) Method and device for producing shaped sheet-metal components by means of preformed components
JP2008518788A (ja) 表面の大きい金属板を形状付与された部分（例えば、車体の外板パネル）へ成形する方法
JP2001162330A (ja) 面積の大きな金属薄板部材を製作する方法
EP1534445B1 (de) Umformwerkzeug
WO2019108269A1 (en) Method and apparatus for forming a beaded can end
US7210323B2 (en) Binder apparatus for sheet forming
WO1983000841A1 (en) Method for severing laminates
US20120234070A1 (en) Method of Drawing a Blank by Preforming a Channel in a Preform that is Subsequently Drawn into a Die Cavity
US5762196A (en) Stackable drawn pieces
US6006577A (en) Stackable drawn pieces and process and apparatus for manufacture thereof
EP0549955B1 (de) Verfahren zum Formen von Blech unter hydraulischem Druck
JPH01309734A (ja) 板状部材の縁部加工方法
JPS5838620A (ja) 金属薄板の局部成形用金型
US3531232A (en) Methods of securing two parts together

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041124

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AVURE TECHNOLOGIES AB

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60323238

Country of ref document: DE

Date of ref document: 20081009

Kind code of ref document: P

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081208

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

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

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

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

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

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081127

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

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090127

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

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

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

26N No opposition filed

Effective date: 20090528

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

Ref country code: DE

Payment date: 20090403

Year of fee payment: 7

Ref country code: FR

Payment date: 20090403

Year of fee payment: 7

Ref country code: IT

Payment date: 20090423

Year of fee payment: 7

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

Ref country code: GB

Payment date: 20090403

Year of fee payment: 7

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081127

Ref country code: LI

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

Effective date: 20090430

Ref country code: CH

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

Effective date: 20090430

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: IE

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

Effective date: 20090402

Ref country code: MC

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

Effective date: 20090430

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081128

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

Effective date: 20100402

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101230

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

Ref country code: DE

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

Effective date: 20101103

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

Ref country code: GB

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

Effective date: 20100402

Ref country code: IT

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

Effective date: 20100402

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

Ref country code: LU

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

Effective date: 20090402

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

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090228

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

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

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

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

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

Ref country code: FR

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

Effective date: 20100430