EP1922162B1 - Formwerkzeug - Google Patents

Formwerkzeug Download PDF

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Publication number
EP1922162B1
EP1922162B1 EP06791945A EP06791945A EP1922162B1 EP 1922162 B1 EP1922162 B1 EP 1922162B1 EP 06791945 A EP06791945 A EP 06791945A EP 06791945 A EP06791945 A EP 06791945A EP 1922162 B1 EP1922162 B1 EP 1922162B1
Authority
EP
European Patent Office
Prior art keywords
shaping
workpiece
mold
cooling
channels
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
Application number
EP06791945A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1922162A1 (de
Inventor
Robert Vehof
Armin Meier
Dieter Hartmann
Falk Leitner
Mathieu Brand
Reiner Kelsch
Peter Weber
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.)
Voestalpine Metal Forming GmbH
Original Assignee
Voestalpine Metal Forming 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37420803&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1922162(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine Metal Forming GmbH filed Critical Voestalpine Metal Forming GmbH
Priority to SI200630257T priority Critical patent/SI1922162T1/sl
Priority to PL06791945T priority patent/PL1922162T3/pl
Publication of EP1922162A1 publication Critical patent/EP1922162A1/de
Application granted granted Critical
Publication of EP1922162B1 publication Critical patent/EP1922162B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure

Definitions

  • the invention relates to a molding tool for molding sheet steel components according to the preamble of patent claim 1.
  • Such a mold is from the JP-A-2005007442 known.
  • molding tools d. H. a top and a Unterformwerkmaschineschwmaschinen the corresponding to an inserted preform or an inserted board by the collapse of the mold halves give a shape, for example by deep drawing to cool with water, so that an inserted hot preform or a hot plate inserted in particular from sheet steel, reshaped and cooled.
  • a desired hardening is brought about in hardenable steel sheets.
  • Such mold halves made of cast or forged materials, wherein the mold halves each have a shaping surface.
  • a plurality of bores is produced, which are substantially parallel to the contoured shaping surface, the respective mold half of a Take side to the opposite side.
  • a connection channel drilled to the cooling channel, so that the cooling channel from the back of the mold half can be acted upon by a bore with cooling medium, which is discharged through the other bore to the back of the mold half.
  • the open ends or the open end of the cooling channel is usually closed with corresponding plugs or shutters to prevent leakage of cooling medium on the side of the mold.
  • JP-A-2005007442 is a mold with two contoured mold halves known, each having a workpiece facing the mold surface shell and a support mold half, wherein the mold surface shells are arranged on the support mold half and the mold surface shells each having a workpiece facing the mold surface and a workpiece facing back, wherein the support mold half over has a contoured area which substantially corresponds to the contour of a workpiece to be produced and the contoured area is surrounded by a flange area, wherein grooves are present in the contoured area of the front of the carrier mold halves, wherein the carrier mold halves have receiving surfaces which receive the mold surface shells form fit and the Receiving surfaces and the grooves form cooling channels.
  • the object of the invention is to provide a mold which is easy and quick to produce, and has a high effective cooling capacity.
  • each mold half each has a mold surface shell.
  • the mold surface shell is the component closest to the workpiece and has a mold surface for molding the tool, which has a contoured mold surface corresponding to the desired contour of the workpiece or corresponding to the forming.
  • the mold surface shell according to this contour three-dimensional. This means that a concave configuration of the molding surface on the rear side relative to the mold surface shell surface or plane is a correspondingly convex molding.
  • the mold surface shell has a, preferably homogeneous thickness of, for example, 10 to 40 mm.
  • the mold surface bowl has a back surface, with the back side having milled cooling grooves.
  • the cooling grooves for example, have a width of 8 to 20 mm, wherein the cooling channels, for example, have a u- or rectangular cross-section and are formed between the cooling channels parallel to each other extending webs.
  • the webs have for example a width of 3 to 15 mm.
  • the cooling channels have a depth of 3 to 10 mm, in particular 5 to 6 mm.
  • the mold surface shells extend on both sides of the actual shape contour plate-like beyond this and have in these flange at regular or irregular intervals holes or corresponding recesses to screw these mold surface shells with the respective support forms can.
  • these screw holes are surrounded on the back by dome-like or frustoconical continuations, which engage in corresponding recesses of a carrier mold and center the mold surface on the carrier mold.
  • the supporting form is a respective block-like structure which has a receiving surface which corresponds to the molding surface shell rear and receives the molding surface shell in a form-fitting manner.
  • the receiving surface of the supporting form and the cooling grooves form closed channels, wherein the webs abut against the receiving surface and separate the channels from each other.
  • the support form In the area of the beginning and the end of the respective grooves the Form channels, the support form has a hole or cutout which extends continuously from a rear surface to the receiving surface and thus connects the cooling channels liquid-conducting with a rear side of the supporting form.
  • all cooling channel inlet channels or cooling channel outlets are connected to one another each correspondingly extending water chamber, which is acted upon from the outside with water and this water distributed in the feed channels and thus in the cooling channels.
  • the support form is screwed with its back on a mold plate which carries the shape.
  • the cooling channels follow the contour of the molding surface and thus also the contour of the workpiece.
  • such cooling is not possible because it is not possible at all points of a form to produce corresponding cooling channels by drilling.
  • the cooling channels must be drilled away from the contour.
  • such cooling channels of the prior art are at different distances from the contour of the workpiece. This leads to thermal stresses in the mold itself but also in the workpiece, which does not cool evenly at all points.
  • the molding surfaces can be produced in trays in a simple manner, wherein on the Rear of the mold surface shell, the grooves can be easily generated by milling.
  • the rectangular cross-section of the grooves increases the flow-through cross section, in contrast to round holes, and as a result the cooling capacity can be effectively increased.
  • turbulences occur in the region of the boundary layer between the flowing cooling medium and the wall, so that a laminar boundary layer which builds up breaks off relatively quickly and therefore the mass flow but also the flow velocity can increase.
  • the construction of a laminar boundary layer impedes the heat transfer between the wall and the cooling medium.
  • the milled grooves can be left rough or be equipped by ball or sand blasting with a defined surface so that the tearing of the laminar boundary layer is provoked.
  • a tool steel or gray cast iron or steel investment casting can be used.
  • a material is selected for the Form primaschalen, which has a higher thermal conductivity.
  • These are, for example, bronze alloys such as those sold by the company Ampco with the name Ampcoloy 940 or Ampcoloy 972.
  • These are mainly copper-based materials, which contain chromium, nickel and silicon and possibly other accompanying metals in addition to copper.
  • the chromium contents of such special materials are between 0.4 and 1.0%, the nickel content between 0 and 2.5% and the Si content between 0 and 0.7%, for example zirconium still in a content of 0.12 % may be included.
  • the molding tool 1 (according to the invention) FIG. 5 ) has an upper mold half 2 and a lower mold half 3. Each mold half has a mold surface shell 4 facing the workpiece and a mold half 5 supporting the mold surface shell 4.
  • a molding surface shell 4 is a plate-like member having a thickness of, for example, 10 to 50 mm, each molding surface shell 4 having a contour region 6 in which the molding surface shell 4 substantially corresponds to the contour of a workpiece to be reshaped and one Flange region 7 adjacent to the contour region 6 with which the mold surface shell 4 is attached to a carrier mold half 5.
  • each mold surface shell 4 has a molding surface 8 which faces a workpiece to be formed and a correspondingly contoured back side 9 (FIG. FIG. 2 ).
  • cooling channels 10 which are milled into the material of the mold surface shell 4 or introduced in any other suitable manner.
  • the cooling channels 10 have a substantially rectangular or U-shaped cross-section and may extend transversely or longitudinally in the contoured region.
  • the mold surface shell 4 may have a clamping region 11.
  • the clamping area 11 has the task to hold the workpiece as firmly as possible on all sides to ensure that the workpiece in certain areas at a shrinkage to the respective mold surfaces 8 creates without, however, nachzug material from the flange 11.
  • the clamping region 11 is preferably free of cooling channels, but cooling channels 10a adjacent to the clamping region 11 may be arranged such that the clamping region is delimited by the actual cooling channels 10 in the contoured region and cooling channels 10a from the flange region 7.
  • bores 12 for receiving bolts 13 are provided in the flange region 7. Accordingly, these screw holes have in the region of the molding surface 8 via countersinks which are designed so that a screw head in the countersink or can be housed in a corresponding shape so that it does not protrude over the molding surface.
  • the screw holes 12 surrounding dom- or dome-shaped or cylinder-like protrusions 14 may be provided.
  • the projections 14 can in corresponding recesses 15 in the support mold halves 5 (FIG. FIG. 4 ) and thus effect a centering and support of the mold surface shell on the carrier mold half.
  • centering projections or corresponding centering recesses may also be provided outside screw holes.
  • the carrier mold halves 5 ( FIG. 3 ) are block-shaped, for example, and in the closed state have the shape ( FIG. 3 ) facing receiving surfaces 16 for receiving the Form vomschalen and these opposite backs 17th
  • the receiving surfaces 16 have a contour corresponding to the back contour of the forming surface shells 4. This means that the mold surface shells 4 in the assembled state rest on the receiving surfaces 16 in a form-fitting manner. As a result, the cooling channels 10 or the grooves in the rear side of the mold surface shells 4 and the receiving surfaces 16 form cooling channels.
  • an inlet channel 19, which opens into the cooling channel 10 is continuously introduced with respect to the longitudinal extent of the cooling channels 10 in an initial region 18 of each cooling channel from the rear side 17 of the carrier mold half 5 to the receiving surface 16. Relative to the longitudinal extent of the channel 10, a respective outlet channel 21 is introduced in an end region 20 from the rear side 17 of the carrier mold half 5.
  • a continuous inflow chamber 22 or outflow chamber 23 is arranged adjacent to each other and parallel to one another from the rear side 17 of the support half 5 are, introduced, in particular milled or freed.
  • the inlet channels 19 and drainage channels 21 extend from the bottom of these chambers 22, 23 to the receiving surface 16.
  • one inlet or outlet channel 19 or 21 may be provided for each channel 10.
  • the inlet or outlet channels 19, 21 may also be formed wide slit-like and each act on a plurality of channels with cooling medium.
  • each support half 5 has corresponding threaded holes 24 for receiving the screws 13.
  • each support half 5 also has corresponding screw holes 25 to screw each support mold half 5 with a mold base 26 firmly, the mold base plates 26 carry the molds and are connected to corresponding movement devices such that the support mold halves 5 with the mold surface shells mounted thereon 4 each other can be moved to and away from each other.
  • the chambers 22, 23 from which the inlet channels 19 and outlet channels 21 originate, are led out in the region of side walls of the carrier mold halves 5 from the respective carrier mold halves 5 with corresponding connection elements 27 in order to connect the carrier mold halves correspondingly to the water supply or coolant supply and the coolant discharge ( FIG. 5 ).
  • temperature sensors In order to detect the temperatures of the workpiece or the mold surface shells 4, temperature sensors ( FIG. 5 ) to be available.
  • circumferential seals may be present in the area of all screw connections in order to produce the tightness of the system.
  • the mold surface shells 4 are formed of a tool steel or a cast material. Preferably, these mold surface shells are formed of a copper alloy, a bronze or a pure copper.
  • the support mold halves 5 are formed from a cast material such as gray cast iron or cast steel. However, since the carrier mold halves themselves do not experience a particularly high thermal load, it is also possible with appropriate dimensioning to form the carrier mold halves 5 of plastic material, for example polyamide, polyethene or polypropene. In addition, fiber-reinforced plastic composite materials can be used. This allows a particularly easy but also stable training.
  • the length of the cooling channels is relatively short and in particular limited to the contoured region 6.
  • Conventional cooling channels that run through the entire shape are considerably longer.
  • a short cooling length or channel length is achieved in the invention, which also achieves a low pressure drop becomes.
  • the dimension or dimensions of the cooling channels are exactly calculated on the energy required for an effective dissipation of heat, tuned.
  • the temperature distribution in the cooled region is also very homogeneous, so that component distortion but also distortion of the shape is avoided.
  • the cooling system according to the invention has proven to be so efficient in experiments that the cooling water does not have to be cooled down very far as in conventional forms, but for example, with temperatures of 20 to 50 ° C is readily usable.
  • a stable process temperature i. H. a temperature which permanently sets in the mold during the forming of the workpieces, already reached after the first five Umform réellen.
  • This means that a stable desired process is brought about very quickly, so that here too a very good homogeneity is achieved from component to component.
  • the cooling effort and thus the energy consumption is reduced to a very large extent by the use of a relatively warm cooling water.
  • relatively simple cooling systems can be used, for example, impinged water cooler (radiators) or small cooling tower units.
  • the mold surface shell is relatively thin, in contrast to conventional molds and also milled on the back of a plurality of cooling grooves, wherein between the cooling grooves form the remaining webs cooling fins, the heat capacity is relatively low.
  • an operating temperature is reached very quickly, which is determined only by the amount and the temperature of the water flowing through. This makes it possible to achieve the desired stable operating or to reach the process temperature quickly, thus ensuring uniform production right from the start.
  • a material (bronze, copper, Apcoloy) with lower heat capacity and higher thermal conductivity than the conventional materials (steel, cast steel) is used.
  • shell molds on the upper and lower part of an ampule or, depending on the requirements, also made of tool steel are screwed.
  • Cooling channels are milled into the mold shells at a uniform distance from the rear, the cooling channels in the shells are connected to the water chambers through holes in the base support.
  • Water tubes are connected to inlet and outlet chambers to the cooling chambers in the support tool, then the water is passed by means of pressure in the feed chambers, via the inflow holes further into the milled cooling grooves through the drain holes in the drainage chamber and back into the cooling tank, the heat dissipation of the steel part to be hardened at very fast intervals and can be done very evenly, and thus the optimal press hardening of the steel part is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Pens And Brushes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
EP06791945A 2005-09-08 2006-09-08 Formwerkzeug Active EP1922162B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200630257T SI1922162T1 (sl) 2005-09-08 2006-09-08 Oblikovalno orodje
PL06791945T PL1922162T3 (pl) 2005-09-08 2006-09-08 Narzędzie kształtowe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005042765A DE102005042765C5 (de) 2005-09-08 2005-09-08 Formwerkzeug
PCT/EP2006/008793 WO2007028641A1 (de) 2005-09-08 2006-09-08 Formwerkzeug

Publications (2)

Publication Number Publication Date
EP1922162A1 EP1922162A1 (de) 2008-05-21
EP1922162B1 true EP1922162B1 (de) 2009-02-25

Family

ID=37420803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06791945A Active EP1922162B1 (de) 2005-09-08 2006-09-08 Formwerkzeug

Country Status (10)

Country Link
US (1) US8047037B2 (sl)
EP (1) EP1922162B1 (sl)
AT (1) ATE423640T1 (sl)
DE (2) DE102005042765C5 (sl)
EA (1) EA012661B1 (sl)
ES (1) ES2322296T3 (sl)
PL (1) PL1922162T3 (sl)
PT (1) PT1922162E (sl)
SI (1) SI1922162T1 (sl)
WO (1) WO2007028641A1 (sl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014107210A1 (de) 2014-05-22 2015-11-26 Benteler Automobiltechnik Gmbh Modulares Warmformwerkzeug

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DE102006040224A1 (de) * 2006-08-28 2008-03-20 Magna Automotive Services Gmbh Verfahren und Werkzeug zum Warmumformen eines Metallwerkstücks
DE102007003745B4 (de) * 2007-01-19 2017-04-06 Müller Weingarten AG Vorrichtung zur Herstellung pressgehärteter Blechbauteile
DE102007040013A1 (de) * 2007-08-24 2009-02-26 Bayerische Motoren Werke Aktiengesellschaft Werkzeug für das Warmumformen und/oder Presshärten eines Metallblechs
DE102007056186B3 (de) * 2007-11-21 2009-01-08 Aisin Takaoka Co., Ltd., Toyota Warmformpresse
DE102008016118A1 (de) * 2008-03-19 2009-09-24 Volkswagen Ag Vorrichtung und Verfahren zur Herstellung von Formbauteilen in Fertigungsverfahren
DE202010003605U1 (de) * 2010-03-15 2010-07-08 Voestalpine Automotive Gmbh Vorrichtung zum Formen und/oder Härten von Blechbauteilen
DE102010027554A1 (de) 2010-07-19 2012-01-19 Thyssenkrupp Umformtechnik Gmbh Umformwerkzeug und Verfahren zum Warmumformen und partiellen Presshärten eines Werkstückes aus Stahlblech
KR101326824B1 (ko) * 2011-11-07 2013-11-11 현대자동차주식회사 핫 스탬핑 성형용 금형
DE102011119613B4 (de) * 2011-11-29 2017-07-27 Airbus Defence and Space GmbH Formwerkzeug und Herstellvorrichtung zum Herstellen von Kunststoffbauteilen sowie Formwerkzeugherstellverfahren
KR101402019B1 (ko) * 2012-05-16 2014-06-02 주식회사 성우하이텍 핫 스탬핑용 금형
DE102012210958A1 (de) 2012-06-27 2014-04-03 Bayerische Motoren Werke Aktiengesellschaft Gekühltes Werkzeug zum Warmumformen und/oder Presshärten eines Blechmaterials sowie Verfahren zur Herstellung einer Kühleinrichtung für dieses Werkzeug
DE102013005080B4 (de) 2013-03-23 2020-12-10 Volkswagen Aktiengesellschaft Formwerkzeug zum Warmumformen und/oder Presshärten eines Blechmaterials, sowie Verfahren zum Herstellen eines kühlbaren Formwerkzeugsegments
KR20150001008A (ko) 2013-06-26 2015-01-06 기아자동차주식회사 핫스탬핑 냉간트림 양산용 프레스 금형의 제조방법 및 이를 이용한 핫스탬핑 냉간트림 양산용 프레스 금형
US20150246383A1 (en) * 2014-02-28 2015-09-03 Ford Motor Company System and process for producing a metallic article
EP3088092B1 (de) 2015-04-30 2017-06-07 Benteler Automobiltechnik GmbH Warmumform- und presshärtewerkzeug sowie verfahren zum betreiben des warmumform- und presshärtewerkzeuges
US9566632B1 (en) 2015-09-08 2017-02-14 Con-Tech Manufacturing, Inc. Shaping tool die
DE102016003621B4 (de) 2016-03-17 2017-11-23 Aweba Werkzeugbau Gmbh Aue Temperiersystem in Druckgießwerkzeugen
JP6758710B2 (ja) * 2016-11-25 2020-09-23 株式会社キーレックス プレス装置
DE102018116238A1 (de) * 2018-07-04 2020-01-09 Kme Germany Gmbh & Co. Kg Warmumformwerkzeug und Verfahren zur Herstellung eines Warmumformwerkzeuges
DE102018212122A1 (de) 2018-07-20 2020-01-23 Volkswagen Aktiengesellschaft Formwerkzeug zum Warmumformen und/oder Presshärten eines Blechwerkstücks und Verfahren zur Herstellung eines gekühlten Werkzeugsegments
CN109433924B (zh) * 2018-11-28 2020-11-03 大连理工大学 一种实现模内快速成形和淬火的模具
DE102019112636A1 (de) * 2019-05-14 2020-11-19 Alexander Wilden Beteiligungen GmbH Gesenkanordnung mit Kühlmittelkanal
CN112238594A (zh) * 2019-07-18 2021-01-19 汉达精密电子(昆山)有限公司 一种通用型整形治具
JP2021023950A (ja) * 2019-08-01 2021-02-22 株式会社ジーテクト 金型および金型の製造方法
JP7258193B2 (ja) * 2019-08-01 2023-04-14 株式会社ジーテクト 金型および金型の製造方法
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Publication number Priority date Publication date Assignee Title
DE102014107210A1 (de) 2014-05-22 2015-11-26 Benteler Automobiltechnik Gmbh Modulares Warmformwerkzeug

Also Published As

Publication number Publication date
WO2007028641A1 (de) 2007-03-15
DE102005042765C5 (de) 2013-01-03
DE502006002967D1 (de) 2009-04-09
ES2322296T3 (es) 2009-06-18
DE102005042765B4 (de) 2010-12-09
EP1922162A1 (de) 2008-05-21
PL1922162T3 (pl) 2009-07-31
EA200800702A1 (ru) 2008-10-30
PT1922162E (pt) 2009-04-23
ATE423640T1 (de) 2009-03-15
US8047037B2 (en) 2011-11-01
DE102005042765A1 (de) 2007-03-22
EA012661B1 (ru) 2009-12-30
US20090293571A1 (en) 2009-12-03
SI1922162T1 (sl) 2009-08-31

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