EP2570205A1 - Outil de déformation à chaud et de durcissement d'une platine de tôle - Google Patents

Outil de déformation à chaud et de durcissement d'une platine de tôle Download PDF

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Publication number
EP2570205A1
EP2570205A1 EP12006235A EP12006235A EP2570205A1 EP 2570205 A1 EP2570205 A1 EP 2570205A1 EP 12006235 A EP12006235 A EP 12006235A EP 12006235 A EP12006235 A EP 12006235A EP 2570205 A1 EP2570205 A1 EP 2570205A1
Authority
EP
European Patent Office
Prior art keywords
tool
sheet metal
support
support members
metal plate
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.)
Withdrawn
Application number
EP12006235A
Other languages
German (de)
English (en)
Inventor
Dieter Uschkoreit
Andreas Breloer
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.)
Individual
Original Assignee
Individual
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 DE201110113527 external-priority patent/DE102011113527B3/de
Priority claimed from DE201110118562 external-priority patent/DE102011118562B4/de
Application filed by Individual filed Critical Individual
Publication of EP2570205A1 publication Critical patent/EP2570205A1/fr
Withdrawn legal-status Critical Current

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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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching

Definitions

  • the invention relates to a tool for hot forming and hardening of a sheet metal blank, consisting of a tool lower part, on which the sheet metal blank can be placed, and a tool upper part, which is adjustable in the direction of the tool lower part and away from it.
  • Forming tools that serve for such an approach, regularly consist of a tool base and a tool shell, wherein the facing surfaces of the tool parts contours may have any type to produce a corresponding workpiece from the sheet metal blank.
  • From the DE 10 2005 055 494 B3 is a method for producing a component of a metallic flat product, in particular a sheet steel blank, known by press forming, wherein the flat product is heated by conductive heating immediately before the Pressumformvorgang at least partially to a forming temperature before it is inserted into a forming tool and there to the Component is press-formed, wherein the forming temperature is 450 ° C to 700 ° C.
  • the present invention seeks to provide a generic tool type which allows the formation of workpieces made of sheet metal plates in a simple manner, the Have high strength areas and high ductility areas.
  • the invention proposes that a handling tool is provided, by means of which the sheet metal blank is insertable into the space between the upper tool part and the lower tool part, that the handling tool has beam-like support parts on which the sheet metal blank is stored, that the lower tool part a support contour having recesses, in which the supporting parts, which carry the sheet metal plate, are fitting inserted, so that the bearing surfaces of the support members are part of the lower tool part and that at least one of the support members of a coolant and / or a heating medium is flowed through or through, so that the partial areas of the hot-formed sheet metal plate, which rest on the support members, are curable and have a higher strength than the other areas that do not rest on the support members.
  • the handling tool is intended to introduce the sheet metal blanks in the space between the upper tool part and lower tool part and also remove it from this space.
  • the handling tool on beam-like support parts, which can have over their length and width any contour.
  • the sheet metal plate is stored or drive these support parts under a sheet metal blank, which is stored, for example, on a roller conveyor, and lift this sheet metal plate to supply them to the forming tool.
  • the lower tool part has corresponding contours, grooves, grooves or the like recesses, which are adapted to the shape of the supporting parts, which carry the sheet metal blank, so that the handling tool with the beam-like support parts enters the space between the upper tool part and lower tool part and then in the direction of the Lower tool part is lowered, so that the supporting parts lie in the corresponding contours of the tool lower part.
  • the beam-like support parts remain during the forming operation, so if the upper tool part is moved to the lower tool part to reshape the board in the tool.
  • one or more support parts can be flowed through by the coolant and / or heating means, so that the workpiece is not completely cured, but is cured only in partial areas and thus has a higher strength in these areas than in the other areas.
  • the tool can be opened and the formed workpiece can be removed by the handling tool, in which the beam-like support members are raised relative to the lower tool part and are removed together with the workpiece from the space between the upper tool part and lower tool part.
  • the invention proposes that a handling tool is provided, by means of which the sheet metal blank can be introduced into the free space between the upper tool part and lower part, such that the handling tool has beam-like support parts on which the sheet metal blank can be deposited, that the lower tool part contours, Troughs, grooves or the like recesses, in which the support members that carry the sheet metal plate, are fitting inserted, so that the surfaces of the support members on which the sheet metal plate rests, are part of the tool base, and that at least one support member with respect to the forming tool separately cooled or is heated, so that the partial areas of the hot-formed sheet metal plate, which rest on the support member, have a higher ductility than the other produced in the forming tool by abrupt cooling high-strength areas.
  • one or more support members can be cooled or held at temperature subsequent to the forming process, regardless of the rugged cooling of the forming tool, so that the workpiece is not completely cured, but in partial areas a high ductility is achieved for subsequent Forming work on the workpiece are needed or advantageous for the finished workpiece.
  • the Ductility of the workpiece in partial areas can be influenced as needed.
  • the invention further relates to a tool for hot forming and hardening a sheet metal blank, consisting of a tool lower part on which the sheet metal blank can be placed and a Maschinenzugoberteil which is adjustable in the direction of the tool lower part and away from it, wherein a transport means is provided by means of which Sheet metal plate in the space between the upper and lower tool part is einbringbar.
  • the invention is based on the same object, which is initially described.
  • the invention proposes that beam-like support members are provided, that the tool lower part contours, grooves, grooves or the like recesses, in which the support members are fitting inserted, so that the surfaces of the support members are part of the tool base, and that at least a support member relative to the forming tool is separately cooled or heated, so that partial areas of the hot-formed sheet metal plate, which rest on the support member, have a higher ductility than the other produced in the forming tool by abrupt cooling high-strength areas.
  • the sheet metal blanks with suitable means of transport in the space between the tool top and tool base are introduced. You can also be removed in a suitable manner with a corresponding transport again after the transformation as a finished molded part from the space.
  • this transport beam-like support members are provided, which in turn may have any contour over its length and width.
  • the lower tool part has matching contours or the like, in which the support parts are fitting inserted, so that the surfaces of the support parts are part of the lower tool part.
  • the top of these support members thus forms a part of the contour of the lower tool part, which cooperates with the upper tool and the deformation of the corresponding product, ie the sheet metal plate causes.
  • These support members are preferably heated outside the tool with a preheater.
  • the preheating can take place in a heating pocket of a furnace.
  • the heating can also be done inductively or in any other way.
  • These heated support members can then be inserted in a short way and in a short time in the lower tool part, before the deformation of the sheet metal blank takes place.
  • the sheet metal plate inserted into the tool initially lies on the lower tool part and in particular with partial areas on the supporting parts. It then takes the transformation by the upper tool part is moved to the lower tool part to the board reshape. Subsequent to the forming process, a rugged cooling of the tool can be done to harden the molding located in the tool.
  • the tool can be opened and the formed workpiece can be removed by suitable means of transport.
  • the insertion of the supporting parts into the tool or into the corresponding positions of the lower tool part can preferably take place from a side region of the tool.
  • a preferred embodiment is seen in that the support members are flush with the tool base, so that the bearing surfaces lie in a plane with the support contour of the lower tool part.
  • a substantially constant material thickness of the formed workpiece is achieved, wherein the contour and shape of the workpiece depends only on the surfaces of the tool base and tool shell.
  • the supporting parts can be inserted into the recesses of the lower tool part in such a way that the bearing surfaces lie behind a plane which is formed by the support contour of the lower tool part, or protrude from this plane.
  • the supporting parts have channels for cooling and / or heating or heat maintenance, which open and exit at one end face or open and exit at opposite end faces, wherein the channels adjoin one another Coolant generator and / or feeder and / or a Schuffenermaschineer and / or -zuday are connected.
  • the arrangement of the outlets and junctions on an end face is advantageous, since then the supply and discharge of coolant and / or heating medium must then take place only from this end face.
  • switching valves and an electrical / electronic control are provided for controlling the coolant and / or heating medium supply.
  • the sheet metal plate consists of a hardenable steel alloy.
  • the handling tool is an electronically controlled robot.
  • a tool for hot working and hardening a sheet metal blank is shown. It consists of a lower tool part 1, on which the sheet metal plate is aligned aligned, and a tool upper part 2 that is adjustable in the direction of the lower tool part 1 and away from this to perform the forming operation can.
  • the tool lower part 1 has a corresponding support contour 3 and the upper tool part 2 a projecting contour 4, which together give the forming contour, which is introduced into the tool.
  • a handling tool is provided by means of which sheet metal blanks in the free space between the upper tool part 2 and lower tool part 1 in the open state can be introduced.
  • the handling tool itself is not shown.
  • the handling tool has beam-like support members 5 on which the sheet metal blank is stored, and with the help of the sheet metal plate, for example, from a roller conveyor in the tool is portable. Also, the finished workpiece with these support members 5 can be removed in turn from the tool.
  • the lower tool part 1 recesses 6 (contours, grooves, grooves or the like), in which the support members 5 are fitting inserted, so that the surfaces of the support members 5, on which the sheet metal plates rest, are quasi part of the tool base 1, if the target position is achieved, which is illustrated in the drawing.
  • the support members 5 thus remain in the forming operation in the tool. Only after completion of the forming operation, the support members 5 are raised by means of the handling tool, so that the workpiece can be lifted from the support contour 3 of the lower tool part 1 and removed from the gap between the tool parts 1,2.
  • At least one support member 5 can be flowed through by coolant, so that the partial regions of the hot-formed sheet metal blank, which rest on the support members 5, are curable , By accordingly fast cooling and higher strength than the other areas that do not rest on the support members 5.
  • the partial cooling can still be done in the tool, ie in the position of the support members 5 in the corresponding recesses 6 of the tool part. 1
  • At least one support member 5 can be heated or cooled, for example, by coolant or heating medium can be flowed through, so that the partial areas of the hot-formed sheet metal blank, which rest on the support members 5, are not cured by the rapid cooling of the forming tool and have the high strength of the formed, hardened workpiece, but by slow cooling or additional heating have a high ductility.
  • the partial heating or slow cooling can still be done in the tool, ie in the position of the support members 5 in the corresponding recesses of the tool lower part. 1
  • At least one support member 5 of heating medium or coolant can be flowed through, so that the cooling rate in the partial areas in which the workpiece on a Carrier 5 rests, is adjusted so that the partial area has a high ductility.
  • the beam-like support members 5 may be flush with the tool base 1, so that their bearing surfaces lies in a plane with the support contour 3 of the tool base 1, as can be seen from the drawing. But it is also possible to design the support members 5 such that their bearing surface lies behind the plane which is formed by the support contour 3 of the tool part 1 or that they also protrude from this plane to different material designs and material cross sections in the region of the support members 5 to reach.
EP12006235A 2011-09-15 2012-09-04 Outil de déformation à chaud et de durcissement d'une platine de tôle Withdrawn EP2570205A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110113527 DE102011113527B3 (de) 2011-09-15 2011-09-15 Werkzeug zum Warmumformen und Härten einer Blechplatine
DE201110118562 DE102011118562B4 (de) 2011-11-15 2011-11-15 Werkzeug zum Warmumformen und Härten einer Blechplatine

Publications (1)

Publication Number Publication Date
EP2570205A1 true EP2570205A1 (fr) 2013-03-20

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ID=46924201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12006235A Withdrawn EP2570205A1 (fr) 2011-09-15 2012-09-04 Outil de déformation à chaud et de durcissement d'une platine de tôle

Country Status (1)

Country Link
EP (1) EP2570205A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878237A (zh) * 2014-03-24 2014-06-25 华中科技大学 一种高强钢热冲压成形零件加工的方法
WO2016055230A1 (fr) * 2014-10-10 2016-04-14 Voestalpine Metal Forming Gmbh Procédé de fabrication de composants en acier trempé
WO2016146646A1 (fr) 2015-03-17 2016-09-22 Ikergune A.I.E. Procédé et système de traitement thermique de tôles
US10961597B2 (en) 2012-09-06 2021-03-30 Exteotar, S.A. Method and system for laser hardening of a surface of a workpiece

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10212820C1 (de) * 2002-03-22 2003-04-17 Benteler Automobiltechnik Gmbh Verfahren und Einrichtung zum elektrischen Widerstandserwärmen von metallischen Werkstücken
DE102005055494B3 (de) 2005-11-18 2007-05-24 Thyssenkrupp Steel Ag Verfahren zum Herstellen von einem Bauteil aus einem metallischen Flachprodukt durch Pressumformen
WO2011026712A2 (fr) * 2009-09-01 2011-03-10 Thyssenkrupp Steel Europe Ag Procédé et dispositif pour produire un composant métallique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10212820C1 (de) * 2002-03-22 2003-04-17 Benteler Automobiltechnik Gmbh Verfahren und Einrichtung zum elektrischen Widerstandserwärmen von metallischen Werkstücken
DE102005055494B3 (de) 2005-11-18 2007-05-24 Thyssenkrupp Steel Ag Verfahren zum Herstellen von einem Bauteil aus einem metallischen Flachprodukt durch Pressumformen
WO2011026712A2 (fr) * 2009-09-01 2011-03-10 Thyssenkrupp Steel Europe Ag Procédé et dispositif pour produire un composant métallique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10961597B2 (en) 2012-09-06 2021-03-30 Exteotar, S.A. Method and system for laser hardening of a surface of a workpiece
US11898214B2 (en) 2012-09-06 2024-02-13 Etxe-Tar, S.A. Method and system for heat treating a workpiece
CN103878237A (zh) * 2014-03-24 2014-06-25 华中科技大学 一种高强钢热冲压成形零件加工的方法
WO2016055230A1 (fr) * 2014-10-10 2016-04-14 Voestalpine Metal Forming Gmbh Procédé de fabrication de composants en acier trempé
WO2016146646A1 (fr) 2015-03-17 2016-09-22 Ikergune A.I.E. Procédé et système de traitement thermique de tôles
US10864603B2 (en) 2015-03-17 2020-12-15 Ikergune A.I.E. Method and system for heat treatment of sheet metal

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