EP3212346A1 - Molding tool for producing hot-formed components - Google Patents
Molding tool for producing hot-formed componentsInfo
- Publication number
- EP3212346A1 EP3212346A1 EP15787146.8A EP15787146A EP3212346A1 EP 3212346 A1 EP3212346 A1 EP 3212346A1 EP 15787146 A EP15787146 A EP 15787146A EP 3212346 A1 EP3212346 A1 EP 3212346A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- insert
- component
- mold
- recess
- 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.)
- Granted
Links
- 238000000465 moulding Methods 0.000 title abstract description 3
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000012212 insulator Substances 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 239000003570 air Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 9
- 239000002826 coolant Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/06—Stamping using rigid devices or tools having relatively-movable die parts
-
- 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
- B21D22/208—Deep-drawing by heating the blank or deep-drawing 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
Definitions
- the invention relates to a mold for the production of hot-formed components.
- the structural components of the body are not only significantly involved in the stability of the vehicle, but also play a crucial role in safety in the event of a crash.
- Hot forming processes are also described in the literature as mold hardening or press hardening.
- a board is first heated in an oven to a temperature above the austenitizing temperature of the steel and then simultaneously formed in a tool and cooled, ie, form-hardened.
- a finished molded and trimmed steel component is first produced from a board by cold forming.
- thermo-mechanically formed following heating to the austenitizing temperature in the tool wherein the thermo-mechanical forming at a temperature above the Austinitmaschinesendtemperatur Ac3 (about 830 ° C) is preferably between 900 and 1100 ° C.
- the cooling of the formed workpieces by means of a cooling which are located in a closed tool body.
- the patent DE 19723655 B4 shows a method for producing steel sheet products by heating a measured steel sheet, hot working the steel sheet in a pair of tools, hardening the formed product by rapidly cooling from an austenitic temperature while still being held in the pair of tools and then working the product ,
- the present invention has the object to provide a mold for the production of components, in particular of vehicle components made of sheet metal, in which particularly good mechanical characteristics are realized and at the same time the weight of the component is reduced.
- the invention proposes a mold for the production of hot formed components, in particular sheet metal parts before, with a tool lower part and a tool upper part, which are relatively movable to each other and which are formed with corresponding active surfaces for shaping the component, wherein at least the active surface of a tool part is at least partially coolable and are provided in the tool part cooling lines.
- at least one recess may be provided, which forms in a closed state of the tool with the component an air chamber, which acts as a thermal insulator between the component and the tool part.
- the object of the invention is based on the effect that a workpiece heated in a furnace to a temperature above AC3 is introduced between the tool parts and hot-formed in the direct process, wherein the workpiece is simultaneously geometrically deformed and thermally cooled.
- a medium enclosed in the chamber acts as an insulator, thereby cooling the workpiece in the region of the chamber more slowly than in the remaining regions of the component.
- gases for example inert gases or ambient air, are suitable as the medium.
- the recess may be formed variable in volume. As a result, the amount of air in the chamber can be increased or reduced as needed, and thus the degree of isolation compared to the cooled tool part can be varied. Here, a higher insulation is achieved, the higher the amount of air in the chamber.
- an insert may be arranged, which forms a tool-side rear wall of the air chamber.
- the insert has a surface portion facing the component, which forms part of the wall of the recess.
- the insert can be arranged movably, in particular linearly displaceable, in the tool part. As a result, depending on the desired degree of isolation, the insert can be transferred into a corresponding position, thereby defining the volume of the air chamber.
- channels may be provided in the insert for controlling the temperature of the insert.
- the insert is adjusted to a predetermined temperature with a tempered medium, in particular with a gas or with a liquid, for example oil or water.
- the medium is tempered in a heating and / or cooling device and passed through the channels of the insert.
- the insert may be in a retracted position in a closed state of the tool to produce the recess. In this position, a filled with medium / air chamber is then formed. In an open state of the tool, the insert may be in an advanced position in which the volume of the recess is at least reduced in size relative to the volume of the recess in the retracted position of the insert.
- the air is removed from the chamber, thereby preventing the air in the chamber from excessively heating.
- the recess or the chamber is consequently flushed regularly with the medium / air. The hot forming process - and not least the structure in this area of the workpiece - is thus not affected.
- the recess may be actively purged via a controller or controller.
- the sheet-metal shaped parts may be formed of iron metal, in particular of steel and / or of non-ferrous metal, in particular of aluminum and / or magnesium.
- the cooling lines may carry a coolant substantially parallel to a surface of the component.
- the guided in the cooling lines coolant, which may be gaseous or liquid, does not come into direct contact with the component.
- the thermal energy of the coolant in the cooling lines acts through the material of the tool part on the component or workpiece, which is in contact with the mold during forming with the tool.
- individual areas of the component or of the workpiece can be cooled at different speeds or different degrees, thereby realizing various mechanical properties in the component.
- cooling lines can be supplied with coolant via a common feed system. This offers the advantage that a uniform temperature control or supply of coolant of the same temperature is ensured in all cooling lines.
- the active surface of the upper tool part and / or the active surface of the lower tool part can be designed to be coolable at least in sections. Due to the small thickness of the sheet metal component, which is in the range of 0.5 to 5 mm, a one-sided cooling is sufficient. However, to realize a particularly fast and strong cooling, it may be advantageous to realize a two-sided cooling.
- Fig. 1 is a sectional view through a mold.
- Fig. 1 shows a mold 10, which is used in presses for hot forming of tools, in particular sheet metal blanks to sheet metal components 17.
- the mold 10 has a lower mold half 12u, which rests on a base plate 1 1.
- the lower mold half 12u cooperates with an upper mold half 12o.
- the mutually facing active surfaces of the upper mold half 12 o and the lower mold half 12 u are formed correspondingly, so that they act as a die and die of a press tool.
- the tool half 12o is designed as a punch and the tool half 12u as a die.
- the upper and lower mold halves can be reversed in their arrangement, such that the upper tool acts as a die and the lower tool acts as a punch.
- the upper mold half 12o and the lower mold half 12u are relatively movable relative to each other.
- the mold halves 12o, 12u shown in FIG. 1 can be moved apart and back together. When the mold halves move together, a piece of sheet metal or a sheet metal blank is inserted between the mold halves, and is encompassed and shaped by the active surfaces.
- the state shown in Fig. 1 corresponds to an end position of the tool halves 12u, 12o in a forming process in which the component 17 is finished reshaped.
- an insert 16 is shown, which is movable along the double arrow B relative to the tool half 12o.
- the insert 16 is thus linearly displaceable in the direction of the component 17 and away from the component 17.
- the insert 16 performs a linear motion substantially perpendicular to the component surface. Alternatively, however, a movement obliquely to Component surface to be performed.
- the insert 16 forms a recess 15.
- the recess 15 acts as a chamber which is filled with air. This chamber 15 is bounded by a surface of the insert 16, which faces the component 17, an inner surface of the opening through the upper tool half 12o in which the insert 16 is introduced and a portion of the surface of the component 17.
- the air gap 15 slower, so that sets in this area a microstructure with low mechanical characteristics, in particular with low strength values.
- the air gap 15 thus covers exactly the area which is characterized in the later component or vehicle by low strength and thus high ductility. The properties of the component can thus be adjusted so that in the event of a vehicle crash results in a targeted deformation of the ductile region.
- the size of the air chamber 15 can be changed by shifting the insert 16. Depending on the selected position of the insert 16 i. Depending on the size of the air chamber 16, other desired strength values in the area of the component can be adjusted accordingly.
- the air chamber 16 may be formed in particular with a small volume as a gap.
- channels 18 may be arranged, which serve to control the temperature of the insert.
- the insert 16 is flushed with a tempered medium and adjusted to a predetermined temperature.
- the medium is pre-tempered in a heating and / or cooling device and passed through the channels 16 of the insert 18.
- the temperature of the insert 16 and thus the air in the chamber 15 can be controlled or regulated via the temperature of the medium.
- Gases, for example inert gases or liquids, for example oil or water, are particularly suitable as the medium.
- the provision of channels 18 is only optional. In other embodiments of the invention, the insert 16 may be formed without the medium-carrying channels 18.
- a mold insert 13 is provided, in which a cooling system having a plurality of cooling pipes 14 is integrated.
- the use of such cooling inserts 13 offers, on the one hand, the advantage that different component contours can be embossed with a lower forming tool 12u in that the mold insert 13 can be replaced in accordance with the desired component shape.
- the cooling lines 14 are fluidly connected to a distribution or connection system. The coolant is thus introduced via the connection system, and distributed to the cooling lines 14.
- the cooling lines 14 shown in FIG. 1 extend substantially parallel to the surface of the component 17 and thus also substantially parallel to the active surface of the mold halves 12 u, 12 o.
- the cooling lines 14 thus follow the component contour at a certain distance in the mold insert 13 of the lower mold half 12u.
- Suitable coolants for the cooling lines 14 are gaseous cooling media, liquid cooling media or a combination thereof.
- a single insert 16 is shown, which is arranged in the upper tool part 12o.
- the use in the lower tool part 12u be arranged.
- one or more inserts 13 may be positioned in both the upper and lower mold halves 12o, 12u.
- only the lower mold half 12u is provided with cooling pipes 14.
- the arrangement of the cooling system, ie the connection system and the cooling lines 14 may also be arranged in the upper mold half 12o.
- a mold insert 13 may alternatively be arranged in the upper mold half 12o or in both mold halves.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014221997.3A DE102014221997A1 (en) | 2014-10-29 | 2014-10-29 | Mold for the production of hot-formed components |
PCT/EP2015/073207 WO2016066391A1 (en) | 2014-10-29 | 2015-10-08 | Molding tool for producing hot-formed components |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3212346A1 true EP3212346A1 (en) | 2017-09-06 |
EP3212346B1 EP3212346B1 (en) | 2020-05-13 |
Family
ID=54361051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15787146.8A Active EP3212346B1 (en) | 2014-10-29 | 2015-10-08 | Molding tool for producing hot-formed components |
Country Status (4)
Country | Link |
---|---|
US (1) | US10537928B2 (en) |
EP (1) | EP3212346B1 (en) |
DE (1) | DE102014221997A1 (en) |
WO (1) | WO2016066391A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014118416B4 (en) * | 2014-12-11 | 2017-02-23 | Thyssenkrupp Ag | Tool for forming and / or partial press hardening of a workpiece |
EP4032631A1 (en) * | 2021-01-26 | 2022-07-27 | C.R.F. Società Consortile per Azioni | Apparatus and method for hot stamping of metal sheets with modulation of the quenching rate |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE9602257L (en) | 1996-06-07 | 1997-12-08 | Plannja Hardtech Ab | Ways to produce steel detail |
DE102005025026B3 (en) | 2005-05-30 | 2006-10-19 | Thyssenkrupp Steel Ag | Production of metal components with adjacent zones of different characteristics comprises press-molding sheet metal using ram and female mold, surfaces of ram which contact sheet being heated and time of contact being controlled |
JP4664781B2 (en) * | 2005-09-12 | 2011-04-06 | 新日本製鐵株式会社 | Hot press molding die, hot press molding apparatus, and hot press molding method |
CN100464890C (en) | 2005-12-19 | 2009-03-04 | 河南科技大学 | Method for forming magnesium alloy pipe fitting |
CN101288889B (en) | 2007-04-18 | 2012-07-11 | 上海大众汽车有限公司 | Ultra-high strength steel hot stamping forming die |
WO2009123538A1 (en) * | 2008-04-03 | 2009-10-08 | Gestam Hardtech Ab | Method of manufacturing a press-formed sheet-metal product |
CN201231286Y (en) | 2008-07-31 | 2009-05-06 | 钢铁研究总院 | Baby fixation device for imaging department |
DE102009020423A1 (en) * | 2009-05-08 | 2010-11-11 | Bayerische Motoren Werke Aktiengesellschaft | Part assembly with a press-hardened sheet metal component |
JP5740099B2 (en) * | 2010-04-23 | 2015-06-24 | 東プレ株式会社 | Manufacturing method of hot press products |
US8194036B1 (en) * | 2011-06-29 | 2012-06-05 | Google Inc. | Systems and methods for controlling a cursor on a display using a trackpad input device |
JP5611257B2 (en) * | 2012-03-13 | 2014-10-22 | パナソニック株式会社 | Metal laminate film molding method and molding apparatus therefor |
KR20130108899A (en) | 2012-03-26 | 2013-10-07 | 현대자동차주식회사 | Hot stamping device |
DE102012106405B4 (en) | 2012-07-17 | 2016-06-16 | Kirchhoff Automotive Deutschland Gmbh | Method for producing a deformed and at least partially hardened sheet metal component and use of a press-hardening tool for producing such a component |
US20150246383A1 (en) * | 2014-02-28 | 2015-09-03 | Ford Motor Company | System and process for producing a metallic article |
DE102014108901B3 (en) * | 2014-06-25 | 2015-10-01 | Thyssenkrupp Ag | Method and forming tool for hot forming and corresponding workpiece |
-
2014
- 2014-10-29 DE DE102014221997.3A patent/DE102014221997A1/en active Pending
-
2015
- 2015-10-08 WO PCT/EP2015/073207 patent/WO2016066391A1/en active Application Filing
- 2015-10-08 EP EP15787146.8A patent/EP3212346B1/en active Active
-
2017
- 2017-04-26 US US15/497,769 patent/US10537928B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3212346B1 (en) | 2020-05-13 |
CN106660097A (en) | 2017-05-10 |
DE102014221997A1 (en) | 2016-05-04 |
US20170225214A1 (en) | 2017-08-10 |
US10537928B2 (en) | 2020-01-21 |
WO2016066391A1 (en) | 2016-05-06 |
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