WO2011023318A1 - Vorrichtung, verfahren und werkzeug zur herstellung eines kragendurchzuges in einem bauteil - Google Patents
Vorrichtung, verfahren und werkzeug zur herstellung eines kragendurchzuges in einem bauteil Download PDFInfo
- Publication number
- WO2011023318A1 WO2011023318A1 PCT/EP2010/005035 EP2010005035W WO2011023318A1 WO 2011023318 A1 WO2011023318 A1 WO 2011023318A1 EP 2010005035 W EP2010005035 W EP 2010005035W WO 2011023318 A1 WO2011023318 A1 WO 2011023318A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- punch
- die unit
- die
- matrizenkavität
- 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.)
- Ceased
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/04—Stamping using rigid devices or tools for dimpling
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
- B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
Definitions
- So-called form or recording plate with pull-through comprises.
- the component is for this purpose between the
- the collar passage which is also referred to as a sheet metal passage or collar, can serve different purposes, for example as a threaded passage for screwing, for which purpose an internal and / or external thread is introduced at the collar passage.
- Object of the present invention is the production of collar passages with regard to technical and
- the invention is initially based on a device for producing a collar pass on a component, with a die unit and a punch device, the exact position for the production of the collar passage
- the punch device can be arranged, and wherein the production of the collar passage by punching a material region from the component and by reshaping of remaining material areas, which adjoin the punched-out material area, takes place.
- the component may be a flat, tubular or profile part, in particular made of sheet metal, wherein the production of the collar passage is made in particular on a flat portion of the component.
- stamping device has a hollow die with a
- Stamp recess comprises, which is adapted to a die portion of the die unit such that the
- At least the hollow punch possibly at times still another part of a holding arrangement for the component, and / or at least parts of the die unit relative to each other.
- This can be z. B. by the sole movement of the hollow punch, by the sole movement of at least parts of the die unit or by movement of both the hollow punch and the
- the immersion therefore does not mean that the die section has to move in any case, but the die section remains stationary and the hollow die moves towards the die assembly or die section.
- the hollow die is in particular reciprocated via a drive, for example via a drive piston.
- Relative movement of the die unit and the punch device is advantageously carried out in one stroke.
- different sections of the hollow punch and the die unit cooperate so that the component in this one stroke completely with all
- Sub-steps can be produced. So far, this could be done only in two or more strokes or with a comparatively
- Material area are very precisely separated from the component, in particular without a sharp edge formation or without ridge and / or chip formation. So far occurs
- An advantageous modification of the subject invention is characterized in that a hold-down, which at the preparation of the collar passage with the second component side can be brought into abutment, is present such that the component is held in the manufacture of the collar passage between the die unit and the hold-down. With the hold-down, the against the at the
- Matrizeniser supported component comes into abutment, the component between the hold-down and the die unit can be kept securely fixed, for example, clamped.
- the hold-down comes easily leading to
- the component for example, a sheet material, but is
- the hold-down advantageously remains on the second for so long
- stamping device and the die unit are designed such that the stamping and forming of material regions is possible in one stage. This makes it possible to simplify the entire process of producing the collar pass. This will be in one
- a first stage is a pre-punching and a widening of the relevant Section of the component made, which is followed by a second stage, in which the final shaping of the sheet metal passage takes place.
- Stamping device and the die unit are configured such that a shaping of the component is completed during the manufacturing process of the collar passage, without reversing an initial during the manufacturing process of the collar passage
- Stamping device and / or the die unit can be done faster and technically advantageous.
- the hollow punch is within the hollow punch
- the further movement of the device or the component can immediately after the lifting of the Hold down the component.
- the movement of the hollow punch and hold-down can be optimally adapted to the desired process sequence independently of one another. This is done in particular via a computer unit, for. B. a parent control unit, z. B. a tax or
- Control device for regulating the production device.
- the hollow punch of the stamp device is formed leading or trailing to the hold-down.
- the process flow can be made variable.
- the hollow punch can thus come into contact with the component during manufacture of the collar passage before or after the downholder contacts the component.
- the die section comprises a raised die mandrel, which is designed for a precise fit into the punch recess.
- the outer shape and / or outer dimension of the die mandrel is formed so that the die mandrel into the die recess with a desired, for example
- Inner wall of the hollow punch can be specified exactly on the formation of the hollow punch or the die mandrel.
- the game can z. B. can be chosen differently for different materials. This allows the punched out for all relevant component thicknesses and materials
- the immersion depth of the die mandrel must be at least so large that the component is punched through in a stroke and also the material to be deformed until the completion of the naturalzuges is reshaped accordingly, what a
- the die unit has a support portion for supporting the first component side in the manufacture of the collar passage.
- the matrix unit can serve as a support for the component supporting it.
- the support section abuttingly comes into contact with sections of the component which are opposite to the sections on the component which come into contact with the hold-down device.
- the component can be securely fixed or clamped held in its processing position in the production of the collar passage.
- the support section is designed such that it comes into contact, in particular flat, with an annular surface on the first component side. Accordingly, the hold-down can be designed so that this also with a
- annular surface on the second component side comes into abutment, wherein the annular contact surfaces on the first and the second component side are at least approximately equal.
- the contact surfaces on the component are usually flat or flat, since in particular plate-like components are reshaped, so that for an advantageous surface contact with the contact surfaces on the component and the mating contact surface of the blank holder and the support portion are flat or flat.
- the matrix cavity can be defined in shape and dimension
- the Matrizenkavtician provides a free space in which material of the component, which in the
- Material are formed by the interaction of at least bearing surface, Matrizenkavmaschine and hollow dies so that the desired collar passage is formed.
- Matrizenkavmaschine must therefore be tuned so that there is room to form the protruding edge of the collar and the dipping part of the hollow punch.
- the height or shape of the protruding edge of the collar can therefore also be determined via the volume and / or the shape of the matrix cavity provided
- the available volume of the Matrizenkavmaschine is also influenced by the size or shape of the front part of the hollow punch.
- the Matrizenkavtician is in particular ringnutförmig and
- the matrix cavity is limited to the working axis radially inwardly bounded by a wall of the die mandrel and bounded radially outwardly by a portion of the die unit, which adjoins the support surface and extending in the direction away from the stamping device.
- the radially inner and outer walls of the Matrizenkavtician are in particular parallel
- the depth of the Matrizenkavtician in the direction of the working axis may vary depending on the application, for example, so large that the deformed material area in this direction
- Matrizenkavmaschine can be done in particular with a predeterminable radius in order to form the protruding edge of the collar passage without tearing material at the transition from the flat portion in the edge can.
- the die mandrel is configured to provide a bearing surface for the first component side of the
- the bearing surface is shaped in particular so that they are at the first
- the surface of the first component side supported by the support surface belongs to the subsequently punched-out material region or the so-called stamped or sheet metal slug.
- the matrix unit according to the invention can be described as a punching die with a core, wherein the die mandrel forms the core, with the intermediate Matrizenkavtician further outward of the support portion is present.
- the hollow punch defined on the punching die two different die diameters can be effective in one working stroke.
- a first effective or inner diameter becomes with the edge of the die mandrel or its support surface educated.
- a second effective or outer diameter is defined by the radially inner edge of the support portion to the working axis. Both diameters come into play, in that the hollow die and the die unit move in a stroke relative to each other or parts of it dive into each other.
- Production of the collar passage serves as a stop for a material of the component that in the manufacture of the
- Component side protruding edge are formed.
- Deformed material is limited by the stop, which increases the process quality.
- the draft is characterized geometrically determined because the depth of the forming process is defined or limited.
- the Matrizenkavtician can continue to be designed without paragraph especially without anvil component.
- the paragraph can be set up by the shape of the Matrizenkavtician, so that a paragraph without anvil component is present.
- the shoulder of the die cavity is formed by an insertable into the die assembly exchange component.
- the replacement component such as a sleeve-shaped insert or anvil member, may be selectively inserted or omitted.
- Matrizenhim different stops can be realized by each different Anvil components are used.
- a suitable anvil part can also be used in the Matrizenkavtician optional or omitted.
- Connecting means for aeration and / or venting of Matrizenkavtician is provided.
- a dirt formation can be prevented or carried out a blow-off by compressed air or suction via negative pressure of interfering substances in the area of the die unit.
- the suction or blowing z. B. of air can be at least one below the
- the stamping device is designed such that the punched-out material area is ejected towards the free end of the stamping device out.
- the arrangement according to the invention can also be used in cases where the ejection of the punching nozzle forward is desired.
- inventive device is therefore not on a substantially cylindrical outer or inner contour of the
- Stamping device is arranged, and the collar passage by punching a material portion of the component and by forming of remaining material portions which adjoin the punched material region, is produced. According to the invention, the punched-out material region is removed via the stamp device. The punched out
- stamp device with a drive and / or other supply units connected is.
- the stamp device or a stamp element is driven in a mobile manner, which is what it is
- the connection of the stamping device is already realized with at least one corresponding connecting component, on or in the integrated, the discharge of the punching can be easily set up.
- z. B. only one discharge line can be provided wegnachransportieren the nacheinender resulting punching slugs when a number of passes are produced in clockwise succession in succession.
- the transport of the stamped slugs can be transported, for example, according to the principle of "one pushes the next" in a memory or a reservoir and cached there. In a less
- the memory can then be emptied.
- each punching slug can be discharged individually.
- the punched slug can also be sucked off or ejected to the front with the help of the punch.
- the stamped-out material region is preferably inserted into a stamp recess in a hollow die of the stamp device
- the removal of the punched housing can be advantageously integrated.
- the hollow ram offers itself for this purpose, since in its stamp recess the punched slug is inserted, so that a continuation and discharge of the stamped from there makes the least additional measures necessary.
- Stamp depression can for example be extended or the discharge line can to the stamp recess
- the invention also relates to a tool for producing a collar passage, with a device which according to a the above variants is formed.
- the tool may be suitable for robots or may be accommodated on a robot.
- the tool is particularly connection compatible with regard to proven connection standards z. B. for known clinching, enforcing or. Punching tools.
- proven connection standards z. B. for known clinching, enforcing or. Punching tools.
- Stamp holder and scraper existing systems for z. B. the clinching technology can be used.
- MatrizengrundSuper can be used for example on existing Clinchmatrizen. This can reduce the variety of variants and increase the flexibility of the device according to the invention.
- the punch or the hollow punch can be provided on the basis of modified catalog or standard goods.
- the process-relevant tool dimensions can be selected according to DIN.
- the drive of the movable part of the stamp device or of the hollow punch can be realized by known drive arrangements for related systems, for example
- Figure 1 is a perspective view of a
- Figure 2 shows the arrangement of Figure 1 in one
- FIG. 3 shows a section according to FIG. 2 in the region of the component to be processed shortly before the FIG
- FIG. 4 shows the arrangement according to FIG. 3 at the end of the FIG
- FIG. 5 shows an alternative variant of a
- Figure 1 shows in perspective an inventive tool 1 for producing a collar passage with a to
- machining component 2 which is indicated here in reduced size here as a disk-shaped or flat sheet metal material.
- the tool 1 comprises a punch device 3 and a bow-side die unit 4, between which the component 2 is positioned in a defined position.
- the stamping device 3 formed with an approximately cylindrical external shape comprises a front cylindrical section with a hollow punch 7 guided in a holding-down device 8 (see FIGS. 2 to 5) and a subsequent cylindrical section 3a with a larger outside diameter, against which a
- Connecting portion 6 are received at a counter portion.
- Figure 2 shows schematically and in section the internal structure of the tool 1 according to the invention with the outside cylindrical Hollow punch 7, which is guided in the punch device 3 relative to the die unit 4 according to the double arrow Pl movable.
- a hold-down 8 of the stamping device 3 is used
- the hold-down 8 is spring-loaded by spring means 9, not shown.
- Hollow stamp 7 is surrounded protectively by the blank holder 8, wherein the central receptacle of the hollow punch 7 a
- the hollow punch 7 merges in the direction of the die unit 4 with a transition 7a into a region which has a smaller diameter
- the hollow ram 7 is internally provided with a punch bore 10 formed as stamp recess, wherein the
- Stamp bore 10 is formed centrally in the hollow ram 7 over its entire length. At the rear to the punching waste storage 5 directed end of the hollow punch 7 opens the
- Butzenreservoir is rotational position-independent, because throughout formed circumferentially, and can be externally opened, for example, via a robot movement by means of a sliding outer collar 5a and closed again.
- the component 2 is for the production of the collar pass with a first component side or underside on an annular and planar support portion 13 which is provided on the front side of the die unit 4.
- the hollow punch 7 hits the component 2 driven and starts to press or punch. This creates a field of tension in the component 2 such. B. in known punching or cutting operations, so that after a penetration depth of the tip of the hollow punch 7 in the component 2 of about one third to half of the material thickness of
- Collar passage 19 ( Figure 5) additionally damped.
- the hollow ram 7 moves back after deformation from the Matrizeniser in an initial position
- Punch 18 is held therein easily clamped and therefore taken away with the hollow die 7 of the die unit 4. Are already several Stkovbutzen (not shown) by previous punching operations in the punch bore 10th
- stamping device 3 and the die unit 4 an elongated projecting die mandrel 14 is formed with a cylindrical outer shape, which at its front side to
- Stamping device 3 facing the end of a plane
- Support surface 14a for the first component side of the component 2 has.
- the bearing surface 14a likewise supports the component 2 on the underside, wherein the bearing surface 14a lies at least almost in the plane formed by the bearing region 13.
- the die mandrel 14 is fixed in position in the die unit 4 and is with its outer diameter di only minimally or slightly smaller than the inner diameter d2 in the front part of the punch bore 10.
- the relative movement of the hollow punch 7 and die unit 4 according to the invention is possible in one stage or in one stroke and allows the
- the proposed die unit 4 is simple in construction, relatively little filigree and thus very robust.
- Hollow punch 7 in its front region by a double wall thickness D of the formed projecting edge of
- the Matrizenkavtician 15 is over at least one in particular three distributed over the circumference of the die unit 4 ventilation and / or ventilation line (s) 16 to avoid or
- FIG. 5 shows a variant of the invention
- an anvil 20 which is inserted in the Matrizenkavmaschine 15, and a shoulder 21 in the Matrizenkavmaschine 15 provides.
- an annular stop surface 20a for the front end of the passage 19 is provided.
- a defined edge formation of the passage 19 is defined on the underside of the component 2.
- Matrizeniser 4 also a so-called switchable
- Matrix unit can be used in divided construction. This would have the advantage that the two processes of pre-punching and forming, according to the invention simultaneously and without
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10745561A EP2470314A1 (de) | 2009-08-26 | 2010-08-17 | Vorrichtung, verfahren und werkzeug zur herstellung eines kragendurchzuges in einem bauteil |
| CN2010800482108A CN102574187A (zh) | 2009-08-26 | 2010-08-17 | 用于在构件中产生凸缘式通路的设备、方法和工具 |
| US13/404,407 US20120204618A1 (en) | 2009-08-26 | 2012-02-24 | Device, method and tool for producing a rimmed passage in a component |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009038607.6 | 2009-08-26 | ||
| DE102009038607A DE102009038607A1 (de) | 2009-08-26 | 2009-08-26 | Vorrichtung, Verfahren und Werkzeug zur Herstellung eines Kragendurchzuges in einem Bauteil |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US13/404,407 Continuation US20120204618A1 (en) | 2009-08-26 | 2012-02-24 | Device, method and tool for producing a rimmed passage in a component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011023318A1 true WO2011023318A1 (de) | 2011-03-03 |
Family
ID=43242195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2010/005035 Ceased WO2011023318A1 (de) | 2009-08-26 | 2010-08-17 | Vorrichtung, verfahren und werkzeug zur herstellung eines kragendurchzuges in einem bauteil |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120204618A1 (de) |
| EP (1) | EP2470314A1 (de) |
| CN (1) | CN102574187A (de) |
| DE (1) | DE102009038607A1 (de) |
| WO (1) | WO2011023318A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2463745A2 (de) * | 2009-08-03 | 2012-06-13 | V.L System Co., Ltd. | Lüftermodul mit staubsammelfunktion sowie staubsammelvorrichtung damit |
| DE102012003736A1 (de) | 2012-02-28 | 2013-09-12 | Tox Pressotechnik Gmbh & Co. Kg | Verbindungssystem und Verfahren zum Verbinden von wenigstens zwei Bauteillagen |
| CN103317009A (zh) * | 2013-06-05 | 2013-09-25 | 芜湖澳奔玛汽车部件有限公司 | 一种二次成型模具 |
| DE102013211695A1 (de) * | 2013-06-20 | 2014-12-24 | Bayerische Motoren Werke Aktiengesellschaft | Lochstempel zur Herstellung einer Lageraufnahme sowie Verfahren zur Herstellung einer Lageraufnahme |
| FR3059576B1 (fr) * | 2016-12-05 | 2019-06-07 | Peugeot Citroen Automobiles Sa | Outillage de presse pour la formation d’un collet par tombage |
| CN106670286B (zh) * | 2016-12-27 | 2018-07-27 | 宁波福士汽车部件有限公司 | 一种管件双孔挤压外翻边设备 |
| DE102017204832A1 (de) | 2017-03-22 | 2018-09-27 | Audi Ag | Rastbolzen |
| DE102017204833A1 (de) | 2017-03-22 | 2018-09-27 | Audi Ag | Verfahren und Vorrichtung zum Herstellen eines Blechdurchzugs |
| CN107716699B (zh) * | 2017-10-23 | 2020-01-07 | 重庆华万伦电器有限公司 | 一种铝板柱孔制作装置 |
| DE102018120500A1 (de) * | 2018-08-22 | 2020-02-27 | Tox Pressotechnik Gmbh & Co. Kg | Adapterelement für eine Anbringung eines Matrizenhalters an eine Werkzeugzange |
| CN120187542A (zh) * | 2022-11-15 | 2025-06-20 | 米拉蒙迪设备有限公司 | 用于加工钢带的多功能模具以及用于生产洗衣机滚筒的方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112614A (ja) * | 1981-12-26 | 1983-07-05 | Nissan Motor Co Ltd | プレス型 |
| DE3505622C1 (de) * | 1985-02-19 | 1986-08-14 | Daimler-Benz Ag, 7000 Stuttgart | Verfahren zum lagerichtigen Klemmbefestigen einer Dichtungsträgerleiste am Gestänge eines Klappverdeckes |
| JPH04123828A (ja) * | 1990-09-13 | 1992-04-23 | Hidaka Seiki Kk | 熱交換器用フィンの製造金型 |
| JPH06328172A (ja) * | 1993-05-18 | 1994-11-29 | Hitachi Ltd | 伝熱フィンカラー成形方法 |
| EP1253208A1 (de) * | 2001-04-27 | 2002-10-30 | Benteler Automobiltechnik GmbH & Co. KG | Verfahren zur Herstellung eines gehärteten Blechprofils |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2522379A1 (de) * | 1975-05-21 | 1976-12-02 | Kabel Metallwerke Ghh | Verfahren zum fliesspressen von metallischen werkstuecken |
| US5159826A (en) * | 1990-07-19 | 1992-11-03 | Hidaka Seiki Kabushiki Kaisha | Die set for manufacturing fins of heat exchangers and a manufacturing device using the same |
| DE29918486U1 (de) * | 1999-04-27 | 1999-12-16 | DaimlerChrysler AG, 70567 Stuttgart | Vorrichtung zur Positionierung und Herstellung von Schraubverbindungsstellen an Blechpreßteilen einer Fahrzeugkarosserie |
| DE10218814A1 (de) * | 2002-04-26 | 2003-11-06 | Profil Verbindungstechnik Gmbh | Verfahren zur Herstellung eines Blechdurchzugs, Blechteil, Ölwanne sowie Stempel und Matrize zur Herstellung eines Durchzugs |
| CN201008917Y (zh) * | 2006-12-07 | 2008-01-23 | 陈显国 | 螺丝头的一种螺丝刀槽冲制模具 |
-
2009
- 2009-08-26 DE DE102009038607A patent/DE102009038607A1/de not_active Withdrawn
-
2010
- 2010-08-17 CN CN2010800482108A patent/CN102574187A/zh active Pending
- 2010-08-17 WO PCT/EP2010/005035 patent/WO2011023318A1/de not_active Ceased
- 2010-08-17 EP EP10745561A patent/EP2470314A1/de not_active Withdrawn
-
2012
- 2012-02-24 US US13/404,407 patent/US20120204618A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112614A (ja) * | 1981-12-26 | 1983-07-05 | Nissan Motor Co Ltd | プレス型 |
| DE3505622C1 (de) * | 1985-02-19 | 1986-08-14 | Daimler-Benz Ag, 7000 Stuttgart | Verfahren zum lagerichtigen Klemmbefestigen einer Dichtungsträgerleiste am Gestänge eines Klappverdeckes |
| JPH04123828A (ja) * | 1990-09-13 | 1992-04-23 | Hidaka Seiki Kk | 熱交換器用フィンの製造金型 |
| JPH06328172A (ja) * | 1993-05-18 | 1994-11-29 | Hitachi Ltd | 伝熱フィンカラー成形方法 |
| EP1253208A1 (de) * | 2001-04-27 | 2002-10-30 | Benteler Automobiltechnik GmbH & Co. KG | Verfahren zur Herstellung eines gehärteten Blechprofils |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120204618A1 (en) | 2012-08-16 |
| CN102574187A (zh) | 2012-07-11 |
| DE102009038607A1 (de) | 2011-03-31 |
| EP2470314A1 (de) | 2012-07-04 |
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