EP3509771B1 - Verfahren und werkzeug zur herstellung von blechbauteilen - Google Patents

Verfahren und werkzeug zur herstellung von blechbauteilen Download PDF

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Publication number
EP3509771B1
EP3509771B1 EP17761871.7A EP17761871A EP3509771B1 EP 3509771 B1 EP3509771 B1 EP 3509771B1 EP 17761871 A EP17761871 A EP 17761871A EP 3509771 B1 EP3509771 B1 EP 3509771B1
Authority
EP
European Patent Office
Prior art keywords
component
tool
preshaped
calibration
regions
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
EP17761871.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3509771A1 (de
Inventor
Thomas Flehmig
Martin Kibben
Daniel Nierhoff
Arndt MARX
Daniel CASPARY
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.)
ThyssenKrupp Steel Europe AG
ThyssenKrupp AG
ThyssenKrupp System Engineering GmbH
Original Assignee
ThyssenKrupp Steel Europe AG
ThyssenKrupp AG
ThyssenKrupp System Engineering 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
Application filed by ThyssenKrupp Steel Europe AG, ThyssenKrupp AG, ThyssenKrupp System Engineering GmbH filed Critical ThyssenKrupp Steel Europe AG
Priority to PL17761871T priority Critical patent/PL3509771T3/pl
Publication of EP3509771A1 publication Critical patent/EP3509771A1/de
Application granted granted Critical
Publication of EP3509771B1 publication Critical patent/EP3509771B1/de
Active 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
    • B21D22/20—Deep-drawing
    • B21D22/30—Deep-drawing to finish articles formed by deep-drawing
    • 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
    • B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards

Definitions

  • the present invention relates to a method for producing sheet metal components, the method comprising: preforming a workpiece into a preformed component, excess material being introduced into the preformed component at least in regions; and calibrating the preformed component to an at least partially final molded component using the excess material, the preformed component being compressed at least in sections.
  • the invention also relates to a tool for producing sheet metal components, in particular for carrying out the method according to the invention, comprising: at least one preforming tool for preforming a workpiece into a preformed component, excess material being introduced into the preformed component at least in regions; and at least one calibration tool for calibrating the preformed component to form an at least partially finished component using the excess material, the preformed component being compressed at least in sections.
  • Components manufactured by sheet metal forming generally require a final edge trimming, in which excess areas of the deep-drawn component, for example, are cut off.
  • this can be done, for example, by one or more trimming tools which partially or wholly trim the flange from above or obliquely in the desired manner.
  • the trimming is already much more complex because it has to be passed, for example, via a wedge slide, and cut from the side.
  • trimming operations are disadvantageous in that the trimming usually requires one or even several separate operations, which often also require their own tool technology and their own logistics system.
  • the cut-off areas increase the amount of scrap, which creates additional costs.
  • the final edge trimming can also be omitted for components that are shaped by means of edges or embossing.
  • a preformed half-shell is first formed from a board.
  • the entire cross-section of the preformed half-shell has excess board material due to its geometric shape.
  • the entire cross section is compressed into the finished half shell and the finished half shell has an increased wall thickness over the entire cross section.
  • German publication DE 10 2008 037 612 A1 also describes a process for the production of dimensionally stable, deep-drawn half-shells with a base area, a frame area and a flange area, wherein a pre-shaped half-shell is first formed from a blank, which is then shaped into the final-shaped half-shell. Due to its geometric shape, the preformed half-shell has excess board material. Due to the excess material, the half-shell is compressed into the final-shaped half-shell during the shaping of the preformed half-shell into its final shape by at least one further pressing process. The preformed half-shell has the excess board material in the transition area between the frame area and the flange area.
  • German publication DE 10 2009 059 197 A1 describes a method for producing a half-shell part with a die and a die. Reliable and cost-effective production is achieved by inserting the die into the die in a single step, preforming a blank into a sheet metal part with at least one base section, at least one frame section and optionally a flange section, with a die being used during preforming Excess material is introduced either into the bottom section and the frame section or the optional flange section of the sheet metal blank, and the sheet metal blank into a half-shell part is finished molded and calibrated.
  • German publication DE 10 2013 103 612 A1 also describes a process for the production of dimensionally stable, deep-drawn half-shells, wherein a half-shell preformed from a blank is formed into a finished half-shell and the preformed half-shell has excess board material due to its geometric shape.
  • the half-shell is compressed into the final-shaped half-shell in an upsetting tool. It is provided that the size of the compression gap is reduced to the actual wall thickness of the frame of the preformed half-shell during the closing of the compression tool.
  • German publication DE 10 2013 103 751 A1 describes a method for producing high-quality half-shells from a cut blank, the half-shell being preformed in a first die by deep drawing, and wherein the preformed half-shell is then finally shaped in a second die, in particular in a calibration tool. Taking the desired final shape of the pre-formed or final-shaped half-shell into account, the blank is cut with a positive dimensional deviation in the specified tolerance range before deep-drawing and the die base of the first die is moved relative to the die support surface, around which the blank is deeply guided.
  • a preform is produced in a first or more (first) process steps that comes as close as possible to the final shape or finished shape of the component, but with the difference that in the component sections such as flange, frame, transition area between the flange and frame and / or bottom defined material reserves are introduced, which are shaped out again in a second process step by a special upsetting of the entire part during calibration.
  • Tailored blanks and patched blanks have to be welded and deformed.
  • Tailored tempering requires heating and the corresponding tempering work step, while special cross-sections have to go through complex simulations.
  • the object is achieved in a generic method in that different areas of the preformed component are calibrated with a time delay.
  • Different areas of the preformed component are therefore at least partially not calibrated at the same time.
  • the different areas can partially overlap or be completely different areas. Different areas of the preformed component are thus at least partially calibrated individually or separately.
  • the calibration is composed in particular of partial calibration steps.
  • a calibration of a range preferably only begins when the calibration of the previous range has been completed.
  • At least one first area and one second area are provided, for example, which are calibrated at different times.
  • more than two (for example three, four, five or more) different ones can also be used Areas may be provided. It is not necessary to calibrate the entire component but only one or more sections of the preformed component.
  • calibration can be at least partially dispensed with for geometrical, non-critical areas. This means that the preformed component is not fully calibrated.
  • the workpiece is, for example, an essentially flat board.
  • the workpiece is preferably made from one or more steel materials. Alternatively, aluminum materials or other formable metals can also be used.
  • the production of the preform can be produced in one or more steps by means of shaping processes which can be combined as desired.
  • the preforming can include, for example, a deep-drawing shaping step.
  • a multi-stage shaping can also include, for example, embossing the base to be created and raising the frames to be created or optionally placing the flanges to be created. Any combinations of folding and / or (stamping) embossing are also conceivable.
  • the preformed component obtained by the preforming can in particular be regarded as a component close to the final shape, which corresponds as closely as possible to the intended finished part geometry, taking into account given boundary conditions such as springback and reshaping capacity of the material used.
  • Calibration can be understood in particular to mean final shaping of the preformed component, which can be achieved, for example, by a pressing process.
  • the final molded component can be understood as an essentially finished molded component.
  • the final molded component can be subjected to further processing steps that modify the component, such as the introduction of connection holes.
  • the aim is to design the calibration form in such a way that no further shaping steps are necessary.
  • the component is a half-shell-shaped component, in particular a component which is U-shaped or hat-shaped in cross section, an L-shaped cross-sectional shape with only one pronounced frame also being conceivable, for example.
  • the component has a base area, a frame area and / or a flange area.
  • the component is at least in some areas a flangeless component or at least in some areas has a flange.
  • the excess material can be provided, for example, as a material reserve in the floor area, in the frame area, in the flange area and / or in a transition area between the flange and frame area or frame and floor area.
  • the press forces have so far often not been sufficient due to the comparatively long length.
  • such components can particularly advantageously be divided into different areas and calibrated with a time delay. Alternatively, only one or more sections of the preformed component are calibrated.
  • the preformed component is calibrated, at least in regions, without trimming to the final molded component.
  • An additional, technically complex trimming can be dispensed with, at least in sections, by calibrating the preformed component, provided at least in sections being compressed.
  • the calibration to the essentially final molded component takes place in one tool or different tools.
  • the system engineering effort can be kept low.
  • the tool has different tool parts, which are loaded and / or relieved with a time delay.
  • tool parts can be partially relieved, so that different areas of the preformed component are calibrated with a time delay.
  • the tool is set up to calibrate only a region of the preformed component and the component is gradually calibrated by a relative movement between the component and the tool and repeated closing of the tool.
  • a tool is set up, for example, only for calibrating a part of the different areas (for example only one area). This enables in particular a cycle time-neutral calibration.
  • a component is transported between the calibration of different areas of the preformed component to the essentially final molded component. It can be a transport within a tool or between different ones Tools. This enables the complexity and control of the tool for calibration to be kept low and the division into different tool parts to be avoided.
  • the different regions calibrated with a time delay are component sections arranged along the preformed component.
  • the regions are longitudinal sections of the component which are arranged next to one another in the longitudinal direction. In this way, an additional expenditure of time during the time-shifted calibration can be kept to a minimum.
  • At least some of the remaining areas are secured against evasion during the calibration of an area. This can ensure that the calibration effect occurs as comprehensively as possible in the desired range. Securing can be achieved, for example, by at least partially fixing or supporting at least some of the remaining areas that are not currently being calibrated.
  • the workpiece has a substantially homogeneous thickness and / or is made from one material.
  • Sufficiently high strength and / or rigidity can be achieved by the time-shifted calibration, while at the same time the use of workpieces made of different materials or with different sheet thicknesses (e.g. tailored blanks or patchwork boards) can be dispensed with, which means work steps and thus effort and costs saves.
  • the object is achieved in a generic tool in that the tool is set up to calibrate different areas of the preformed component with a time delay.
  • the disadvantages mentioned at the outset can thus be eliminated or at least greatly minimized, and the range of applications can be expanded to include components which, in particular, have not hitherto been able to be produced using the boundary conditions of the method known from the prior art.
  • a preforming tool can in particular have a (deep-drawing) die and a (deep-drawing) stamp. Of course, other preforming tools can also be used to produce a preform in a workpiece.
  • a calibration tool can in particular have at least one calibration die and a calibration stamp. The tool can include one or more preforming tools and / or one or more calibration tools.
  • the at least one calibration tool has a plurality of tool parts and the tool is set up in such a way that the calibration tool parts are partially relieved during calibration, so that different areas of the preformed component are calibrated with a time delay.
  • time-delayed calibration of different areas can advantageously be carried out in one tool and without additional component transport.
  • several calibration tools can also be provided.
  • only one or more sections of the preformed component can be calibrated.
  • the tool furthermore has securing means which are designed to secure at least some of the remaining — preferably adjacent — areas against evasion during the calibration of an area.
  • the securing means are designed in the form of a hold-down device or also in the form of a die and / or stamp.
  • the above-mentioned object can be achieved in a generic method in that one or more locally thickened areas are generated during calibration.
  • the one or more locally thickened areas are produced in a bottom area, a frame area and / or a flange area of the essentially final-shaped component.
  • a thickened area is understood to mean that the wall thickness in the thickened area is greater than in a surrounding area.
  • the wall thickness in the thickened area is higher than the wall thickness of the finally formed component in the areas that are not specifically thickened.
  • the thickened areas can be used in the desired areas to achieve, in particular, stiffening and / or consolidation, cycle time-neutral and cost-neutral, without having to resort to the complex measures described at the beginning.
  • one or more locally thickened regions extending along the finally formed component are produced during the calibration. For example, locally thickened regions that extend essentially in the form of strips are produced. In this way, the essentially entire component can be stiffened.
  • the excess material introduced into the preformed component is adapted to produce the one or more locally thickened areas. It has been shown that to control the stiffening effect, it is only necessary to adapt the excess material, that is to say local material reserves, in order to achieve a sufficient stiffening effect. This means that, in particular, more excess material is introduced than previously, since thickening is now not avoided, but is instead used in a positive manner.
  • the one or more locally thickened areas are solidified by the calibration.
  • the thickened areas not only reinforce the component through the presence of additional material, but there is an additional hardening (for example a strain hardening).
  • more excess material is introduced into the preformed component than is required for the calibration.
  • more excess material is deliberately introduced in order to provoke the formation of locally thickened areas.
  • the excess material is collapsed in a wave shape at the start of the calibration and solidified to the one or more locally thickened regions until the end of the calibration. If the excess material is provided and the calibration is carried out so that the excess material collapses in a wave shape, the formation of the one or more locally thickened regions, in particular as strip-shaped regions, can be achieved in a simple manner.
  • the object can be achieved in that the tool is set up to generate one or more locally thickened areas during calibration.
  • the tool can be set up, for example, by means of a corresponding geometric adaptation of the calibration tool, for example a stamp and / or a die of the calibration tool, to generate the thickened areas.
  • FIG. 1a-c show schematic representations of the calibration process in the context of an embodiment of a method according to the invention.
  • Fig. 1a a calibration tool 1 of a tool for producing sheet metal components.
  • the tool also includes a preform tool (not shown).
  • a workpiece for example a blank
  • component 2 is a flangeless u-shaped component made of a steel material.
  • the calibration tool 1 is used to calibrate the preformed component 2 to form an at least partially finished component 2 '(cf. Fig. 1c ) using the excess material, the preformed component 2 being compressed at least in sections.
  • the calibration tool 1 comprises a stamp 1a and a die 1b.
  • the tool is set up to calibrate different areas of the preformed component 2 with a time delay.
  • component 2 is calibrated in three different areas 2a, 2b, 2c with a time delay.
  • the areas 2a, 2b, 2c are component sections arranged in the longitudinal direction of the component 2. Calibration is only carried out using tool 1.
  • area 2a is calibrated in a first pressing process ( Fig. 1a ).
  • the preformed and already partially calibrated component 2 is then transported in the longitudinal direction in the tool 1, so that the next area 2b can be calibrated.
  • the area 2b is then calibrated by a second pressing process ( Fig. 1b ).
  • the preformed and already partially calibrated component 2 is then transported again in the longitudinal direction in the tool 1, so that the last area 2c can be calibrated.
  • the area 2c is then calibrated by a third pressing process ( Fig. 1c ).
  • the preformed component 2 is now a final molded component 2 'and can be completely removed from the tool 1.
  • the component 2 could be completely calibrated despite the press force being available only to a limited extent and can in particular be provided without trimming and with sufficient strength.
  • Fig. 2 shows a schematic representation of a preformed component 3 with excess material 4 in the context of an embodiment of a method.
  • the component 3 is a U-shaped component with a base area and frame area. Not only was excess material 4 introduced into the bottom area of the preformed component 3, but this was also adapted to produce one or more locally thickened areas 5. For this purpose, more excess material 4 is introduced into the preformed component 3 than is required for the calibration.
  • the excess material 4 collapses at the start of the calibration. Until the calibration is complete (bottom dead center of the press, not shown), the excess material 4 is solidified into several locally thickened areas 5.
  • the final molded component 3 ' is in Fig. 3 shown.
  • the locally thickened regions 5 produced during the calibration extend along the end-shaped component 3 '.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
EP17761871.7A 2016-09-07 2017-09-05 Verfahren und werkzeug zur herstellung von blechbauteilen Active EP3509771B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17761871T PL3509771T3 (pl) 2016-09-07 2017-09-05 Sposób i przyrząd do wytwarzania blaszanych elementów konstrukcyjnych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016116759.2A DE102016116759A1 (de) 2016-09-07 2016-09-07 Verfahren und Werkzeug zur Herstellung von Blechbauteilen
PCT/EP2017/072177 WO2018046473A1 (de) 2016-09-07 2017-09-05 Verfahren und werkzeug zur herstellung von blechbauteilen

Publications (2)

Publication Number Publication Date
EP3509771A1 EP3509771A1 (de) 2019-07-17
EP3509771B1 true EP3509771B1 (de) 2020-06-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17761871.7A Active EP3509771B1 (de) 2016-09-07 2017-09-05 Verfahren und werkzeug zur herstellung von blechbauteilen

Country Status (8)

Country Link
US (1) US20190217366A1 (es)
EP (1) EP3509771B1 (es)
CN (1) CN109862973B (es)
DE (1) DE102016116759A1 (es)
ES (1) ES2812825T3 (es)
MX (1) MX2019002583A (es)
PL (1) PL3509771T3 (es)
WO (1) WO2018046473A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018114653A1 (de) * 2018-06-19 2019-12-19 Thyssenkrupp Ag Verfahren zur Herstellung lastoptimierter Blechbauteile
CN114505432B (zh) * 2022-02-24 2024-05-14 漳州锐腾电器有限公司 一种改变冲压件截面宽度的墩挤模具及墩挤精切工艺

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
JP2676303B2 (ja) * 1993-01-27 1997-11-12 株式会社ユタカ技研 増肉プレス加工方法
CH690779A5 (de) * 1995-12-28 2001-01-15 Braecker Ag Verfahren zum Formen eines Spinn- oder Zwirnringes sowie nach dem Verfahren geformter Spinn- oder Zwirnring.
US20080299352A1 (en) 2007-05-31 2008-12-04 Nissan Motor Co., Ltd. Press-molded product and method of manufacturing same
DE102007059251A1 (de) * 2007-12-07 2009-06-10 Thyssenkrupp Steel Ag Herstellverfahren hoch maßhaltiger Halbschalen
JP5515279B2 (ja) * 2008-11-20 2014-06-11 日産自動車株式会社 プレス成形品、プレス成形品の製造方法および製造装置
JP5245755B2 (ja) * 2008-11-20 2013-07-24 日産自動車株式会社 プレス成形品、プレス成形品の製造方法および製造装置
DE102008037612B4 (de) 2008-11-28 2014-01-23 Thyssenkrupp Steel Europe Ag Verfahren und Werkzeugsatz zur Herstellung von flanschbehafteten, hoch maßhaltigen und tiefgezogenen Halbschalen
DE102009059197A1 (de) * 2009-12-17 2011-06-22 ThyssenKrupp Steel Europe AG, 47166 Verfahren und Vorrichtung zur Herstellung eines Halbschalenteils
DE102010005263A1 (de) 2010-01-20 2011-07-21 Benteler Automobiltechnik GmbH, 33102 Verfahren zur Herstellung eines Bauteils und Vorrichtung zur Durchführung des Verfahrens
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

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Also Published As

Publication number Publication date
WO2018046473A1 (de) 2018-03-15
PL3509771T3 (pl) 2020-11-30
MX2019002583A (es) 2019-07-01
ES2812825T3 (es) 2021-03-18
EP3509771A1 (de) 2019-07-17
US20190217366A1 (en) 2019-07-18
CN109862973B (zh) 2020-11-17
CN109862973A (zh) 2019-06-07
DE102016116759A1 (de) 2018-03-08

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