EP2217393B1 - Procédé de production de demi-coques, à haute prescription des dimensions - Google Patents
Procédé de production de demi-coques, à haute prescription des dimensions Download PDFInfo
- Publication number
- EP2217393B1 EP2217393B1 EP08858046A EP08858046A EP2217393B1 EP 2217393 B1 EP2217393 B1 EP 2217393B1 EP 08858046 A EP08858046 A EP 08858046A EP 08858046 A EP08858046 A EP 08858046A EP 2217393 B1 EP2217393 B1 EP 2217393B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- half shell
- preformed
- shell
- finished
- section
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 238000009966 trimming Methods 0.000 claims 1
- 238000007906 compression Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 7
- 238000003466 welding Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
-
- 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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- 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
- B21D22/30—Deep-drawing to finish articles formed by deep-drawing
Definitions
- the invention relates to a method for the production of highly dimensionally stable, deep-drawn half-shells with a bottom portion and a frame, wherein first of all a preformed half-shell is formed from a blank, which is subsequently formed into the finished half-shell.
- closed hollow sections are used in motor vehicles, which have specially adapted to the application cross sections and material thicknesses. So far, closed hollow sections are usually prepared by first a tube is formed, the pipe is subjected to corresponding bends and Vorverformungen and then takes a hydroforming of the pre-bent or pre-formed tube to the final shape of the closed hollow profile. On the one hand, not all components can be produced in this way, since during hydraulic forming local strains of the material are exceeded and thus cracking can occur. In addition, uncontrollable wrinkling may occur during hydroforming. In addition, the previously used process steps for producing an application-adapted, closed hollow profile are very complicated and therefore expensive. Although a closed hollow profile can in principle also be produced from two deep-drawn half shells.
- a method for producing half-shells is disclosed in the published Japanese patent application JP 08/168830 known, in which a circuit board is first deep-drawn in a die and projecting flange arise. The flange areas are then simultaneously compressed and sheared off via a cutting and punching punch.
- the problem with the half-shells produced in this way is that they have irregularities at the edges and thus for welding in an I-joint not very well suited.
- the half shells usually still restoring forces, which complicate the welding.
- EP 1 792 671 A1 is a method for press-forming of half-shells known, which are then welded to a closed hollow profile.
- the object of said European patent application is to provide half-shells with thickened edge regions between the bottom region and the frame. For this reason, a preformed half-shell is initially produced from a circuit board, which provides excess material that is pressed from the bottom region into the edge regions between the frame and the bottom region of the half-shell during the forming into the final shape.
- the present invention is concerned with the reduction of the springback of deep-drawn half shells.
- the present invention has the object to provide a method for the production of highly dimensionally stable half shells, with which low equipment cost low dimensionally stable half shells can be produced that are easily welded together.
- the entire cross-section of the preformed half shell due to its geometric shape has excess board material, by the excess material during the Forming the preformed half-shell in its final shape by at least one further pressing operation of the entire cross-section is compressed to the finished half-shell and the finished half-shell substantially over the entire cross section has a relation to the preformed half-shell increased wall thickness.
- Excess board material in the bottom area are provided by the fact that the bottom portion of the preformed half-shell is concave, convex or wavy shaped.
- the preformed half shell has flange regions and the frame is stretched over a flange deceleration, the springback of the preformed half shell can already be reduced.
- Flange-free half-shells can be made available according to a further developed embodiment of the method according to the invention in that the flange areas are separated during and / or after the forming of the finished half-shell via cross slide or laser cutting or by other methods. Despite the preformed half shells with flange areas used, an economical method for the preferred production of high-dimensional, flange-less shells is thus provided.
- the strengths required, for example, for the use of the half shells in motor vehicle construction can be made available in that the board consists of steel or a steel alloy. At the same time good forming properties of the boards are provided.
- the inventive method in that the deformation of the board in the preformed half-shell and the deformation of the preformed half-shell in the final shape in a single device, preferably in a single die with exchangeable bottom takes place, for example, which can be realized in a progressive compound tool. Not only investment costs can be saved with it, but usually also cycle times for the production of half-shells, since transport paths between different dies omitted. This leads to a particularly high efficiency of the method according to the invention.
- a preformed half-shell 1 is shown in a schematic sectional view.
- the half-shell has a frame 2 and a bottom portion 3.
- the bottom portion 3 is slightly curved and the additional flanges 4 are provided.
- FIG. 2a A first embodiment of the method according to the invention is now in the Fig. 2a) and 2b ) dargterrorism.
- the figures show schematically a die 5 with a die 6, which together with the punch 7 the now flangeless half shell 1 can transform to the final shape.
- Fig. 2a it can be seen that the punch 7 due to the preform of the half-shell 1 in the deformation of the half-shell 1, the bottom portion 3 and the frame 2 upsets. Due to the compression process, a material flow is generated, which is approximately those in Fig. 2a ) corresponds to arrows.
- the wall thickness of the finished half shell over the entire cross section is slightly increased by upsetting over the entire cross section. The increase in the wall thickness is not shown in the figures.
- the first preformed half-shell 1 initially has a convex bottom area 3 in order to provide additional board material for the compression.
- Fig. 1 represents the preformed half-shell 1 'of Fig. 3 the additional board material for compression available, because the preformed half-shell 1 'has a convex bottom portion 3' on.
- the excess material from the convex bottom portion is pressed into the side regions or in the frame region of the half-shell, so that in the frame 2 'perpendicular to the bottom region extending and in the bottom region horizontally extending voltages are introduced, which for remindfederungsarmut the finished molded half-shell 1 'lead.
- the punch 7 ' is particularly simple and has no elements for compression of the frame.
- the compression of the frame 2 ' is achieved via the hold-down 8', which cause a compression due to the flow of material from the bottom portion 3 '.
- a preformed half shell 1 " is shown, which according to a third embodiment of the method according to the invention also during the forming flange 4" has.
- the flange 4 are held by downholders 8" during the forming according to a third embodiment of the method according to the invention, as shown in FIG Fig. 6a) and 6b ) is recognizable.
- the bottom portion 3 is convexly preformed in the third embodiment, so that sufficient board material can be provided to compress the bottom portion 3" and the frame 2 "according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Mounting Of Bearings Or Others (AREA)
Claims (6)
- Procédé de fabrication de demi-coques (1 ; 1', 1") embouties, à haute tenue des cotes, avec une zone de fond et un encadrement, dans un premier temps, il étant formé par emboutissage à partir d'une platine une demi-coque (1 ; 1', 1") préformée, qui est ensuite façonnée en demi-coque finie, caractérisé en ce que, du fait de sa forme géométrique, la totalité de la section transversale de la demi-coque (1 ; 1', 1") préformée comporte de la matière excédentaire de la platine, pendant le façonnage de la demi-coque préformée dans sa forme finale, par au moins un processus de pressage supplémentaire, du fait de la matière excédentaire, la totalité de la section transversale étant refoulée en une demi-coque finie et la demi-coque finie comportant sensiblement sur la totalité de la section transversale une épaisseur de paroi agrandie par rapport à la demi-coque préformée.
- Procédé selon la revendication 1, caractérisé en ce que la zone de fond (3 ; 3', 3") de la demi-coque (1 ; 1', 1") préformée est façonnée sous forme concave, convexe ou ondulée.
- Procédé selon la revendication 1 ou 2, caractérisé en ce que la demi-coque (1 ; 1', 1 ") préformée comporte des zones de brides (4 ; 4") et en ce qu'on étire l'encadrement (2 ; 2', 2 ") par-dessus un freinage par bride.
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les zones de brides (4 ; 4") sont sectionnées pendant et/ou après le façonnage en une demi-coque (1 ; 1', 1 ") finie par coulisse transversale ou découpage laser.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la platine est en acier ou en un alliage d'acier.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le façonnage de la platine dans la demi-coque préformée et le façonnage de la demi-coque préformée dans la forme finale s'effectuent dans un dispositif, de préférence dans une matrice à fond interchangeable.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007059251A DE102007059251A1 (de) | 2007-12-07 | 2007-12-07 | Herstellverfahren hoch maßhaltiger Halbschalen |
PCT/EP2008/065700 WO2009071437A1 (fr) | 2007-12-07 | 2008-11-17 | Procédé de production de demi-coques, à haute prescription des dimensions |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2217393A1 EP2217393A1 (fr) | 2010-08-18 |
EP2217393B1 true EP2217393B1 (fr) | 2012-03-14 |
Family
ID=40342737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08858046A Active EP2217393B1 (fr) | 2007-12-07 | 2008-11-17 | Procédé de production de demi-coques, à haute prescription des dimensions |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2217393B1 (fr) |
CN (2) | CN101888908A (fr) |
AT (1) | ATE549110T1 (fr) |
DE (1) | DE102007059251A1 (fr) |
WO (1) | WO2009071437A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11097330B2 (en) | 2016-09-29 | 2021-08-24 | Thyssenkrupp Steel Europe Ag | Method for producing a formed component having a dimensionally accurate wall region |
US11179762B2 (en) | 2016-12-23 | 2021-11-23 | Thyssenkrupp Ag | Method and device for producing sheet-metal components |
US11267032B2 (en) | 2017-01-05 | 2022-03-08 | thyssenknupp AG | Method for producing sheet metal components and device therefor |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009059197A1 (de) | 2009-12-17 | 2011-06-22 | ThyssenKrupp Steel Europe AG, 47166 | Verfahren und Vorrichtung zur Herstellung eines Halbschalenteils |
DE102011115219B4 (de) * | 2011-09-24 | 2020-11-05 | Audi Ag | Verfahren und Vorrichtung zur Herstellung eines Blechformteils unter Vermeidung von Nachlaufkanten |
DE102013103612B8 (de) | 2013-04-10 | 2023-12-28 | Thyssenkrupp Steel Europe Ag | Verfahren und Stauchwerkzeug zur Herstellung von hoch maßhaltigen Halbschalen |
DE102013103751A1 (de) * | 2013-04-15 | 2014-10-16 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung von hochmaßhaltigen Halbschalen und Vorrichtung zur Herstellung einer Halbschale |
DE102016205492A1 (de) | 2016-04-04 | 2017-10-05 | Thyssenkrupp Ag | Verfahren und Vorrichtung zum Umformen eines Halbzeugs |
DE102016116759A1 (de) | 2016-09-07 | 2018-03-08 | Thyssenkrupp Ag | Verfahren und Werkzeug zur Herstellung von Blechbauteilen |
DE102016116758A1 (de) | 2016-09-07 | 2018-03-08 | Thyssenkrupp Ag | Verfahren und Vorrichtung zur Herstellung von geformten, insbesondere flanschbehafteten Blechbauteilen |
DE102016118419A1 (de) * | 2016-09-29 | 2018-03-29 | Thyssenkrupp Ag | Verfahren und Vorrichtung zum Herstellen von Bauteilen mit angepasstem Bodenbereich |
JP6527544B2 (ja) * | 2017-03-28 | 2019-06-05 | Jfeスチール株式会社 | プレス成形装置及びプレス成形品の製造方法 |
JP6527543B2 (ja) * | 2017-03-28 | 2019-06-05 | Jfeスチール株式会社 | プレス成形装置及びプレス成形品の製造方法 |
WO2019068345A1 (fr) | 2017-10-06 | 2019-04-11 | Thyssenkrupp Steel Europe Ag | Procédé et dispositif pour la fabrication d'éléments en tôle façonnés au moyen d'éléments préfaçonnés |
CN107794385B (zh) * | 2017-10-13 | 2019-09-10 | 烟台大丰轴瓦有限责任公司 | 一种大型船舶发动机主轴瓦的制备方法 |
CN107838638B (zh) * | 2017-11-03 | 2019-08-16 | 重庆跃进机械厂有限公司 | 一种大型薄壁轴瓦防变形成型方法 |
CN108098272B (zh) * | 2017-12-19 | 2019-07-12 | 中国航发南方工业有限公司 | 一种螺纹孔加工方法 |
CN108097797B (zh) * | 2017-12-19 | 2019-09-03 | 中国航发南方工业有限公司 | 一种电动机安装壳制备方法 |
DE102017131002B4 (de) | 2017-12-21 | 2022-06-15 | Benteler Automobiltechnik Gmbh | Verfahren zur Herstellung eines Schalenbauteils |
DE102018114653A1 (de) | 2018-06-19 | 2019-12-19 | Thyssenkrupp Ag | Verfahren zur Herstellung lastoptimierter Blechbauteile |
DE102018210174A1 (de) * | 2018-06-22 | 2019-12-24 | Thyssenkrupp Ag | Verfahren zur Herstellung eines Trägers und eines Leiter- oder Kastenrahmens |
CN110280613B (zh) * | 2019-07-02 | 2021-08-10 | 深圳市华科精密组件有限公司 | 一种金属薄料区域性挤厚装置及挤厚方法 |
DE102020202004A1 (de) | 2020-02-18 | 2021-08-19 | Thyssenkrupp Ag | Verfahren zum Herstellen von umgeformten Blechteilen und Vorrichtung |
DE102021121616B3 (de) | 2021-08-20 | 2022-10-06 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung von Blechbauteilen und Vorrichtung hierfür |
DE102021133789A1 (de) | 2021-12-20 | 2023-06-22 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung von Blechbauteilen und Vorrichtung hierfür |
DE102022100163B3 (de) | 2022-01-05 | 2023-02-09 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung von Blechbauteilen und Vorrichtung hierfür |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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DE4437395A1 (de) * | 1994-10-19 | 1996-05-02 | Werdau Fahrzeugwerk | Verfahren zum Anstauchen von Rohrenden und Vorrichtung zur Durchführung des Verfahrens |
JP3579936B2 (ja) * | 1994-11-21 | 2004-10-20 | トヨタ自動車株式会社 | 有底筒状製品の成形方法 |
JP3518004B2 (ja) | 1994-12-19 | 2004-04-12 | 株式会社デンソー | 環状加工品の端面切断方法およびその端面切断方法に用いる端面成形用金型 |
DE19648091C2 (de) * | 1996-11-20 | 1999-10-28 | Daimler Chrysler Ag | Verfahren und Einrichtung zur Herstellung von Hohlprofilen mit endseitigen Querschnittserweiterungen |
JP3832927B2 (ja) * | 1997-06-02 | 2006-10-11 | プレス工業株式会社 | アクスルケースの製造方法 |
JP2001314921A (ja) * | 2000-04-28 | 2001-11-13 | Nissan Motor Co Ltd | プレス加工による局部肉厚増加方法 |
JP4697086B2 (ja) | 2005-12-01 | 2011-06-08 | 日産自動車株式会社 | 屈曲した角部を有する成形部品およびその製造方法並びに製造装置 |
DE102006020000B3 (de) * | 2006-04-26 | 2007-11-08 | Thyssenkrupp Steel Ag | Verfahren zur Herstellung von rückfederungsarmen Halbschalen |
-
2007
- 2007-12-07 DE DE102007059251A patent/DE102007059251A1/de not_active Withdrawn
-
2008
- 2008-11-17 CN CN2008801195809A patent/CN101888908A/zh active Pending
- 2008-11-17 CN CN201510404542.XA patent/CN104959442A/zh active Pending
- 2008-11-17 WO PCT/EP2008/065700 patent/WO2009071437A1/fr active Application Filing
- 2008-11-17 AT AT08858046T patent/ATE549110T1/de active
- 2008-11-17 EP EP08858046A patent/EP2217393B1/fr active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11097330B2 (en) | 2016-09-29 | 2021-08-24 | Thyssenkrupp Steel Europe Ag | Method for producing a formed component having a dimensionally accurate wall region |
US11179762B2 (en) | 2016-12-23 | 2021-11-23 | Thyssenkrupp Ag | Method and device for producing sheet-metal components |
US11267032B2 (en) | 2017-01-05 | 2022-03-08 | thyssenknupp AG | Method for producing sheet metal components and device therefor |
Also Published As
Publication number | Publication date |
---|---|
ATE549110T1 (de) | 2012-03-15 |
EP2217393A1 (fr) | 2010-08-18 |
CN101888908A (zh) | 2010-11-17 |
DE102007059251A1 (de) | 2009-06-10 |
WO2009071437A1 (fr) | 2009-06-11 |
CN104959442A (zh) | 2015-10-07 |
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