EP3519120A1 - VERFAHREN ZUR HERSTELLUNG EINES GEFORMTEN BAUTEILS MIT EINEM MAßHALTIGEN ZARGENBEREICH - Google Patents
VERFAHREN ZUR HERSTELLUNG EINES GEFORMTEN BAUTEILS MIT EINEM MAßHALTIGEN ZARGENBEREICHInfo
- Publication number
- EP3519120A1 EP3519120A1 EP17772395.4A EP17772395A EP3519120A1 EP 3519120 A1 EP3519120 A1 EP 3519120A1 EP 17772395 A EP17772395 A EP 17772395A EP 3519120 A1 EP3519120 A1 EP 3519120A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- quantity adjustment
- specific material
- material quantity
- frame
- flange
- 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.)
- Pending
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
- B21D22/20—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
Definitions
- the invention relates to a method of manufacturing a molded component, the method comprising: preforming a workpiece into a preformed component having a bottom portion, a frame portion, and optionally a flange portion, wherein a material amount adjustment is adjusted in the preformed component; and
- the invention further relates to a molded component.
- a preformed component with a uniform material quantity adjustment in the form of a material addition or compression addition by means of a deep-drawing step or other forming processes or their combination such as a "stamping and raising" or bending, edges, etc.
- the strong and indifferent springback of the component is then new by a calibration step by means of compressive stress superposition aligned, so that an at least partially final-formed and dimensionally stable component can arise.
- the spring-back effects tend to concentrate on the frame and radius areas (drawing and ground radii).
- the frames then tend to bend outward, which is because they must go through at least two bends from a certain length: a bend around the drawing radius when pulling the workpiece into the tool and the subsequent back bending in the straight frame part of the tool.
- the bottom radii only a simple bend.
- the method described is better than, for example, one due to the inclusion on preferably all areas of the component in the process
- the invention has the object to provide a method and a component, wherein the dimensional stability is further improved and in particular a spreading of the frames of U-shaped components or
- Part sections can be selectively influenced, so as to further improve the dimensional accuracy of the components.
- the object is achieved according to a first teaching in a generic method in that the material quantity adjustment with a soil-specific material quantity adjustment, a frame-specific material quantity adjustment, a radii-specific material quantity adjustment and / or optionally a
- Flange area is set. It has been found, in particular, that a material quantity adaptation in the preformed component, which is specific to the
- End-molded component to be counteracted and improved dimensional accuracy in the at least partially final molded component can be achieved.
- a Material quantity adjustment is usually given as a relative percentage (%) compared to the amount of material actually specified in the desired (part) section by the desired final shape.
- a radius region is understood to mean a curved transition region between the base region and the frame region or between the frame region and the flange region (if present).
- more or less material is provided in the corresponding area as it dictates the geometry of the at least partially end-formed component.
- An area-specific adaptation of the material quantity is understood to mean, in particular, that the amount of material in the individually considered area is set individually.
- the frame-specific, soil-specific, radii-specific and / or optionally flange-specific material quantity adaptation is determined in advance.
- Radia-specific and / or optional flange-specific material quantity adjustment determined by means of a simulation, for example with a finite element method.
- the adjustment of a material quantity adjustment preferably takes place in that the workpiece is adapted. For example, more or less material in the corresponding area is already provided in the workpiece, or the geometry of the workpiece results in a corresponding in the preformed component
- the workpiece is, for example, a substantially planar board, for example a sheet metal.
- the workpiece is made of a steel material.
- aluminum or other malleable metals may be used.
- the molded component is accordingly preferably a sheet-metal component.
- the preforming can be produced by means of arbitrarily combinable shaping processes in one or more steps.
- the preforming may include, for example, a deep-drawing-type forming step.
- a multi-stage shaping including, for example, an embossing of the floor to be created and raising the frames to be created or optionally stopping the flanges to be created can take place.
- the preformed component obtained by preforming can be regarded in particular as a component close to the final shape, which corresponds as well as possible to the intended finished part geometry taking into account given boundary conditions such as springback and forming capacity of the material used.
- Calibration can be understood in particular to be a finish molding or final shaping of the preformed component, which can be achieved, for example, by one or more pressing operations.
- the at least partially final molded component even further, the component
- the preforming and calibrating described preferably takes place successively.
- the calibration can only be performed with respect to some areas or to the entire component.
- Material quantity adjustment, the radii-specific material adaptation and / or optional the flange-specific material quantity adjustment a material addition.
- a material quantity adjustment in the form of a material addition additional or (compared to the final form) excess material is provided, which leads to a targeted upsetting during the calibration process and in particular to a
- both the soil-specific material quantity adjustment and the frame-specific material quantity adjustment, the radii-specific material adaptation and optionally the flange-specific material quantity adjustment is a material addition.
- a material quantity adjustment can be particularly locally as well
- Material reduction be formed. In this case, less material than provided by the final form is provided.
- less material than provided by the final form is provided.
- the preformed component has a positive opposite to the final molded component
- the soil-specific material quantity adjustment differs from the soil-specific material quantity adjustment.
- Material quantity adjustment provided. It has been shown that different Material quantity adjustments lead to a flow of material from one area to the other area during the upsetting during calibration and thereby in particular the Zargenö Stammswinkel and / or the Zärgenkrümmungsradius can be influenced. As a result, thus particularly dimensionally stable components can be provided.
- the soil specific material quantity adjustment is + 2%
- Material flow takes place from the frame area in the floor area and / or from the floor area in the frame area.
- a flange is present and the frame-specific material quantity adjustment and the
- Flange-specific material quantity adjustment are set in such a way that material flows from the frame area into the flange area and / or from the flange area into the frame area during calibration. As already stated, such a material flow can be achieved in particular by different
- Material quantity adjustments in the bottom area, in the frame area and / or optionally in the flange portion of the preformed component can be achieved and advantageous for a targeted adjustment of the Zargenö Stammswinkels and / or the
- the method according to the invention are at least two material quantity adjustments from the group of soil-specific material quantity adjustment, the frame-specific material quantity adjustment, the radii-specific material quantity adjustment and / or optionally the
- flange-specific material quantity adjustment a material allowance, wherein at least one material allowance is greater than at least one other material addition.
- the soil-specific material addition is greater than that
- Camber radius of curvature can be influenced as desired.
- At least two material quantity adjustments differ from the group of the frame-specific material quantity adaptation, the soil-specific
- the difference is 1 percentage point. For example, if the soil-specific material allowance is + 2% and the frame-specific Material allowance + 3%, the difference is 1 percentage point. For example, if the soil-specific material allowance is + 2% and the frame-specific
- Camber radius of curvature set For example, the required material quantity adjustments are first determined as part of a simulation or tests and then adjusted according to the preformed component.
- This refinement of the method is based on the finding that an increase in the difference in the material quantity adjustments, in particular in the base region and in the frame region, leads to a reduction in the frame opening angle.
- the difference is at least 0.2 percentage points, in particular at least 0.5
- Percentage points preferably at least 1 percentage point, more preferably at least 2 percentage points.
- the necessary difference may depend on the individual case depend and be influenced by the geometry of each component to be manufactured and / or the material. As already stated, however, the respectively necessary material quantity adaptation can be determined experimentally or by simulations. Spreading is substantially avoided, in particular, if the frame opening angle deviates upwards of less than 2 °, preferably less than 1 °, particularly preferably less than 0.5 °, from the nominal angle.
- Embodiment of the method is based on the finding that a reduction in the difference in the material quantity adjustments, especially in the bottom area and in the frame area, leads to an increase in the Zargenö Stammswinkels.
- the difference is at most 5 percentage points, preferably at most 4
- Percentage points more preferably at most 3 percentage points. Collapsing is substantially avoided, in particular, if the frame opening angle deviates downward less than 2 °, preferably less than 1 °, particularly preferably less than 0.5 °, from the nominal angle.
- Material quantity adjustment, the radii-specific material quantity adjustment and / or optionally the flange-specific material quantity adjustment a material allowance and is set sufficiently large so that spreading of the frame portion of the at least partially final molded component is substantially avoided, for example, greater than + 0.5%, preferably greater than +1 %.
- the frame-specific material quantity adjustment is a material addition and is
- the Zargenkrümmungsradius is greater than 10 3 mm, preferably greater than 10 4 mm, more preferably greater than 10 5 mm.
- the shaped component has a U-shaped cross-section.
- the molded component is a U-shaped profile or a cup-shaped or trough-shaped component.
- the molded component is for example a flangeless or flange-mounted component.
- the component also has a flange area in addition to the floor area and the frame area.
- the frame area preferably runs obliquely or substantially perpendicular to the floor area and / or to the flange area.
- the molded component is made of a steel material.
- the steel material is
- the molded component is made of an aluminum material.
- Aluminum material is preferably an at least high-strength aluminum material. Such aluminum materials have a particularly high springback in classical forming processes. The method according to the invention therefore makes it possible to set a high dimensional stability even with aluminum materials with a material-related high springback.
- the components according to the invention have an advantageous stress distribution due to the compression with the described material quantity adjustment, so that a high dimensional accuracy can be achieved.
- Fig. 3 is a schematic cross-sectional view of a component according to the
- FIG. 4 is a schematic cross-sectional view of a component which has been produced according to an exemplary embodiment of the method according to the invention.
- FIGS. 1, 2 each show schematic cross-sectional representations of a frame region 2, 2 'and a bottom region 4, 4' of a component 1, to illustrate FIG
- the component 1 has a bottom-specific material quantity adjustment in the form of a material allowance or compression addition of + 2% and a frame-specific
- the component has a soil-specific material quantity adjustment in the form of a material allowance or compression addition of + 2% and a frame-specific
- FIG 3 shows a schematic cross-sectional view of a flange-type component 30 according to the prior art.
- the component 30 is manufactured by conventional deep drawing.
- the component 30 has due to the transition from the bottom portion 34 to the frame portion 32 on a spreading of the frames.
- the frame portion 32 has a residual curvature.
- FIG. 4 shows a schematic cross-sectional view of a flange-mounted component 40 which has been produced according to an exemplary embodiment of the method according to the invention.
- a soil-specific material allowance and a frame-specific material allowance were distributed unevenly.
- the component 40 in contrast to the component 30 due to the transition from the bottom portion 44 to the frame portion 42 has no spreading of the frames.
- the frame portion 42 has no residual curvature.
- Fig. 5 shows experimental results for the Zargenendendistanz respectively
- soil addition after calibration.
- the soil-specific material or compression additions were implemented in the form of two uniform waves in the bottom area of circular segment arches with the same radii.
- Fig. 5 the distance of the Zargenenden in mm is plotted on the left over the soil addition in%.
- the dashed line represents the nominal width of the Zargenenden.
- the radius of the curvature of the frame is plotted in mm above the ground allowance in%. Soil additions of 0.5%, 1.0%, 1.5% and 2.0% were chosen. The frame-specific material addition was always 3.0%.
- Fig. 6 shows experimental results for the Zargenendendistanz
- the frame-specific material or compression additions were implemented here in the form of three uniform or tangentenstetigen waves in the bottom region of circular segment arches with the same radii.
- the curb end distance (s) and Zargenkrümmungsradius can be adjusted. It can be seen that by increasing the frame-specific material addition, the crown curvature can be reduced or the crown radius of curvature can be increased, as this is primarily influenced by the frame-specific material addition (FIG. 6, right in comparison with FIG. 5, right). Thus, the frame-specific material addition can be set sufficiently large, so that too large Zargenkrümmung the frames of at least partially final-formed component can be substantially avoided.
- Material addition should be set sufficiently large, so that spreading of the frames of at least partially final molded component substantially
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Metal Rolling (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Forging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016118418.7A DE102016118418A1 (de) | 2016-09-29 | 2016-09-29 | Verfahren zur Herstellung eines geformten Bauteils mit einem maßhaltigen Zargenbereich |
PCT/EP2017/074040 WO2018060080A1 (de) | 2016-09-29 | 2017-09-22 | VERFAHREN ZUR HERSTELLUNG EINES GEFORMTEN BAUTEILS MIT EINEM MAßHALTIGEN ZARGENBEREICH |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3519120A1 true EP3519120A1 (de) | 2019-08-07 |
Family
ID=59966748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17772395.4A Pending EP3519120A1 (de) | 2016-09-29 | 2017-09-22 | VERFAHREN ZUR HERSTELLUNG EINES GEFORMTEN BAUTEILS MIT EINEM MAßHALTIGEN ZARGENBEREICH |
Country Status (6)
Country | Link |
---|---|
US (1) | US11097330B2 (de) |
EP (1) | EP3519120A1 (de) |
CN (1) | CN109803773B (de) |
DE (1) | DE102016118418A1 (de) |
MX (1) | MX2019003665A (de) |
WO (1) | WO2018060080A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018114653A1 (de) | 2018-06-19 | 2019-12-19 | Thyssenkrupp Ag | Verfahren zur Herstellung lastoptimierter Blechbauteile |
DE102021121616B3 (de) | 2021-08-20 | 2022-10-06 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung von Blechbauteilen und Vorrichtung hierfür |
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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 |
US5452599A (en) | 1993-12-14 | 1995-09-26 | Motor Wheel Corporation | Method and apparatus for producing vehicle wheel rims |
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JP3398922B2 (ja) * | 1995-05-16 | 2003-04-21 | ユニプレス株式会社 | 部品の成形方法 |
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-
2016
- 2016-09-29 DE DE102016118418.7A patent/DE102016118418A1/de active Pending
-
2017
- 2017-09-22 MX MX2019003665A patent/MX2019003665A/es unknown
- 2017-09-22 US US16/337,051 patent/US11097330B2/en active Active
- 2017-09-22 WO PCT/EP2017/074040 patent/WO2018060080A1/de unknown
- 2017-09-22 CN CN201780060595.1A patent/CN109803773B/zh active Active
- 2017-09-22 EP EP17772395.4A patent/EP3519120A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102016118418A1 (de) | 2018-03-29 |
CN109803773A (zh) | 2019-05-24 |
DE102016118418A9 (de) | 2018-07-12 |
US20200030867A1 (en) | 2020-01-30 |
US11097330B2 (en) | 2021-08-24 |
MX2019003665A (es) | 2019-06-17 |
WO2018060080A1 (de) | 2018-04-05 |
CN109803773B (zh) | 2021-03-05 |
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