EP3509772A1 - Verfahren und vorrichtung zur herstellung von geformten, insbesondere flanschbehafteten blechbauteilen - Google Patents
Verfahren und vorrichtung zur herstellung von geformten, insbesondere flanschbehafteten blechbauteilenInfo
- Publication number
- EP3509772A1 EP3509772A1 EP17768378.6A EP17768378A EP3509772A1 EP 3509772 A1 EP3509772 A1 EP 3509772A1 EP 17768378 A EP17768378 A EP 17768378A EP 3509772 A1 EP3509772 A1 EP 3509772A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- calibration
- preformed
- preforming
- preform
- 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- Withdrawn
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
- B21D51/00—Making hollow objects
- B21D51/02—Making hollow objects characterised by the structure of the objects
- B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
-
- 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
Definitions
- the present invention relates to a method for producing a shaped, in particular flanged, sheet metal component, the method comprising preforming a workpiece into a preformed component and calibrating the preformed component to a substantially finished molded component.
- the invention further relates to an apparatus for producing a molded, in particular
- a method according to the invention comprising one or more preforming tools for preforming a workpiece into a preformed component and having one or more calibration tools for calibrating the preformed component to a substantially finished molded component.
- thermoformed components usually require a final edge trimming, are cut off in the excess areas of the example, thermoformed component.
- this can be done, for example, by one or more trimming tools that partially or wholly trim the flange from above or obliquely in the desired manner.
- trimming is already considerably more complicated because it has to be cut off from the side, for example, via a wedge slide.
- the trimming operations are disadvantageous in that trimming usually requires one or even several separate, often maintenance-intensive operations, which moreover frequently require their own tool technology and logistics system.
- the cut areas increase the scrap content, resulting in additional costs.
- the final edge trim can also be dispensed with.
- the Flanschberough was integrated into the last forming operation, such as deep drawing operation. This can already be done achieve significant cost savings, but some remain
- German Offenlegungsschrift DE 10 2007 059 251 A1 describes a process for the production of high-density half-shells with a base region and a frame with low expenditure on equipment.
- a preformed half shell is first formed from a circuit 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 to form the finished half shell and the finished half shell has an increased wall thickness over the entire cross section.
- German Offenlegungsschrift DE 10 2008 037 612 A1 likewise describes a method for producing highly dimensionally stable half shells with a base region, a frame region and a flange region, wherein first of all a preformed half shell is formed from a blank, which subsequently forms the final molded article
- Half shell is reshaped.
- the preformed half shell has excess board material due to its geometric shape. Due to the excess material, the half-shell is compressed to the final-formed half-shell during the forming of the preformed half shell into its final shape by at least one further pressing operation.
- the preformed half shell has the excess
- German patent application DE 10 2009 059 197 Al describes a method for producing a Haibschalenteils with a drawing punch and a drawing die.
- a process-reliable and cost-effective production is achieved in that in a single step, the drawing punch is moved into the drawing die, a board to a sheet metal blank with at least one bottom section, at least one
- Zargenabites and optionally a flange portion is preformed, wherein during the preforming with the drawing punch excess material either in the
- Bottom portion and the frame portion or the optional flange portion of the sheet metal blank is introduced, and the sheet metal blank is preformed and calibrated into a sheath shell part.
- German Offenlegungsschrift DE 10 2013 103 612 A1 likewise describes a method for the production of half-shells with high dimensional accuracy, wherein a half-shell preformed from a blank is formed into a finished half-shell and the preformed half-shell is excess due to its geometric shape
- the half shell will be in
- the size of the upsetting gap during the closing of the upsetting tool is reduced to the actual wall thickness of the frame of the preformed half shell.
- German patent application DE 10 2013 103 751 AI describes a method for producing high-scale half-shells from a cut board, wherein the half-shell is preformed in a first die, and wherein the preformed half-shell then in a second die, in particular in a
- Calibration tool is final formed. Taking into account the desired final shape of the preformed or demoulded half shell, the blank is cut to a positive dimensional deviation within the given tolerance range before forming, and the die bottom of the first die is cut relative to the die
- Component sections such as flange, frame, transition region between flange and frame and / or bottom defined material reserves are introduced, which are formed out in a second process step by a special compression of the entire part during calibration again.
- the upsetting of the sheet can sometimes produce slight waves in the finished-molded component, if the spacing between the upsetting die and the upset punch during calibration does not correspond exactly to the sheet thickness. These waves can represent a visual or dimensional defect.
- the invention has the object to provide a generic method and a generic device, wherein the disadvantages mentioned are reduced or even eliminated, that is, in particular the solidification in the component is stronger and the range of applications to components with the boundary conditions of Previously, methods from the prior art can not be drawn without wrinkles, that is to say, in particular, be extended to pan or cup-shaped components, in particular with a small sheet thickness.
- the object is achieved in a generic method in that the calibration of the preformed component to the finished molded component comprises an at least partially extending the preformed component.
- the method is particularly advantageous in the case of trough-shaped, cup-shaped or cup-shaped components, since these were not or not economically available to the previously described methods.
- the component therefore preferably has a bottom region, a frame region and / or a flange region.
- Zargen Lecture runs, for example, obliquely or substantially perpendicular to the floor area and / or the frame area.
- the workpiece is, for example, a substantially planar board.
- the workpiece is made of one or more steel materials.
- aluminum materials or other metals may be used.
- the preparation of the preform can be combined by means of any desired
- 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.
- any combinations of folding and / or bending and / or (compression) embossing can take place.
- the pre-forming for example, carried out deep drawing is, for example, single-stage or executed in several stages.
- the preformed component obtained by preforming can in particular be regarded as a component which is as close to the final shape as possible and 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 substantially finished molded component can be understood as a final molded component.
- the substantially finished molded component may be subjected to further component modifying processing steps, such as insertion of tie holes or a (minor) trim operation.
- the aim is to make the calibration form such that no further
- the preforming and calibrating described preferably takes place successively. However, it is also conceivable that there is a temporal overlap between preforming and calibrating.
- the preformed component need not be equipped with an additional material supply (excess material) in order to achieve a sufficient dimensional stability. Rather, the method according to the invention turns away from this and provides to provide a material shortage in some areas.
- a lack of material is understood to mean that in the preform to be produced in local areas, the unwinding of the sheet is smaller than the corresponding area in the finished-molded component.
- the material is stretched accordingly, the lack of material in the Surface is compensated by reducing the material thickness.
- a material shortage has proven to be advantageous compared to the finished molded component.
- a bottom region of the preformed component may be formed with a lack of material. Contrary to expectations, despite the lack of material, a sufficiently strong and dimensionally stable component can be manufactured.
- a region, in particular a frame region, of the preformed component is dimensioned smaller in comparison with the substantially finished-shaped component with respect to a geometric size.
- the frame portion of the preformed component is smaller in size with respect to the circumference.
- the preformed component has a smaller inner circumference than the substantially finished molded component.
- the bottom area can be dimensioned smaller, for example with regard to its diameter. For example, the range in terms of geometric size about 0.1 to 10%, in particular about 1 to 10% smaller.
- material elevations are permitted during preforming of the workpiece to the preformed component (for example by deep-drawing).
- no attempt is made any material surveys, for example by the
- the material elevations resulting during the production of the preform are wave-shaped and / or fold-shaped.
- the material elevations extend in a substantially radial direction or in a direction deviating therefrom. For example, arise during preforming in the flange area, in the frame area and / or in the floor area material elevations.
- Material collection are advantageously integrated into the example press-based deep drawing. It has been found that the formation of the material elevations can be guided in a controlled manner by providing, for example, an air gap or a hold-down distance.
- the air gap is formed between a preform die and a preform punch.
- the air gap in cross-section is more than 0.1 times, preferably more than 0.3 times, more preferably more than 0.5 times the sheet thickness.
- the air gap is not more than 10 times, preferably not more than 7 times, preferably not more than 5 times the sheet thickness.
- Material surveys include, for example, seen in cross-section only wavy and / or fold-shaped geometries, but without changing the sheet thickness in this area. It has been shown that the material thickening by Calibration can not be calibrated out sufficiently. In addition, no additional pressing forces are necessary for the forming without significant material thickening.
- the material elevations are provided in the frame area
- the material elevations are preferably stretched in the circumferential direction.
- material from the frame area and / or the floor area are preferably stretched in the circumferential direction.
- an area, in particular a frame area or a flange area, of the preformed component is dimensioned larger in comparison with the substantially finished-shaped component with regard to a geometric size.
- the frame area has a greater length (ie, the preformed component has a greater height) compared to the substantially finished-shaped component.
- Flange area a greater length (the flange of the preformed component so a greater radial extent) compared to the substantially finished molded component. This allows an additional compression of the preformed component during calibration, which further increases the strength and dimensional stability of the component, but without exceeding the available pressing forces.
- the calibration of the preformed component to the substantially finished molded component comprises an at least partial upsetting of the preformed component.
- the strength and dimensional stability of the component can be increased by upsetting.
- material of the flange is at least partially compressed.
- the material is doing by the described material surveys in Flange area or by the described larger dimensions (greater length) of the flange provided.
- material of the frame area is at least partially compressed.
- the material is characterized in particular by the described larger dimensions (greater length) of the Zargen Kunststoffs
- upsetting is followed by stretching.
- portions of the preformed member are merely stretched but not upset.
- the preformed component is calibrated essentially in the entire component or only
- Zargen Lecture preferably a stretching and / or upsetting, in the flange preferably a compression and in the bottom region, preferably a compression.
- the object mentioned above is also achieved in a generic device in that the preform tool and the calibration tool are set up such that the calibration of the preformed component to that in the
- Essentially finished molded component comprises an at least partially extending the preformed component. This can be achieved, for example, by appropriate dimensioning of the tool parts (for example, the tool punch and / or tool dies).
- the preformed component by calibrating the preformed component to the substantially finished molded component, which comprises stretching the preformed component, very dimensionally stable, finished-shaped components can be manufactured.
- material elevations introduced by stretching during preforming can be compensated so that a component that is not impaired optically can be provided.
- the calibration with A lower force can be achieved and it is no or only a small edge trimming necessary.
- the preform tool is adapted to allow during the preforming of the workpiece to the preformed component (for example, by deep drawing) material surveys, in particular by means of an im
- the air gap is preferably formed between tool halves or tool parts of the preform tool.
- the preforming tool comprises a preforming punch and a preforming die, and the air gap is formed, for example at least in sections, at least between the preforming punch and the preforming die. This allows in particular a controlled formation of material elevations in the frame area. If the material surveys are allowed by means of, for example, a hold-down distance, this includes
- the preforming tool preferably includes at least a preform die and a preform hold-down, wherein the preform hold-down is maintained at a distance greater than the gauge from the preform die during preforming.
- the preform die includes a first (outer) preform die portion and a second (inner) preform die portion movable relative thereto, which forms the preform die bottom.
- first (outer) preform die portion and a second (inner) preform die portion movable relative thereto, which forms the preform die bottom.
- the calibration tool comprises a calibration punch and a calibration die, the calibration punch having a first (outer) calibration punch portion and a second (inner) calibration punch portion movable relative thereto which controls the calibration - Stamp base forms, comprises and / or wherein the calibration die comprises a first (outer) Kalibrier-Gesenkabêt and a relative thereto movable second (inner) Kalibrier-Gesenkabites which forms the calibration die bottom.
- the calibration can also be advantageously carried out in particular within only one calibration tool.
- the apparatus is arranged such that the sizing die bottom and the sizing die bottom are distanced during stretching, which
- FIGS. 6-10 show an exemplary embodiment of a calibration tool according to the invention for carrying out an exemplary embodiment of a calibration according to the invention.
- Fig. 11 shows an embodiment of a substantially finished molded component.
- FIGS. 6 to 10 show an embodiment of a preform tool 1 according to the invention.
- the exemplary preform tool 1 forms, together with the exemplary calibration tool 2 (see FIGS. 6 to 10), an exemplary embodiment of a device according to the invention.
- a preforming tool 1 a
- Embodiment of a preforming according to the invention are performed.
- the preforming tool 1 first a workpiece 3a, here a flat steel sheet, inserted and optionally fixed in position (Fig. 1).
- the preforming tool 1 includes a preform hold-down 4, a preform die 6 and a preform punch 8.
- Preform die 6 also includes a first outer preform die portion 6a which provides inter alia a preform die pad and a second inner preform die portion 6b or preform die bottom movable relative thereto.
- the preform Gesenk réelle 6b is raised to the height of the workpiece 3a.
- the individual tool parts of the preforming tool 1 are designed for receiving in a press.
- the Preform punch 8 for example, on a press base plate
- the preform hold-4 is, for example, by quills of the sub-air
- the preform Gesenkêt 6b for example, by quills of the upper air
- the first preform die portion 6a for example, by a die plate of the press
- the preform punch 8 and the preform hold-down 4 are lowered onto the workpiece 3a (Fig. 2).
- the workpiece 3a may be stamped between the preform punch 8 and the preform die bottom 6b, while the preform blank holder 4 remains spaced from the workpiece 3a.
- the preform hold-down 4 is as far as the workpiece 3 a distanced that results in a constant hold-down distance, which is greater than or equal to the workpiece thickness results. Deep drawing takes place, for example, with the preform punch 8 and the preform die bottom 6b moving together into the preform die 6a, thereby converting the workpiece 3a into a preformed component 3b (FIG. 3).
- embossing can be used with high points, the hold-down can be completely eliminated.
- the fixed in its defined and repeatable position, previously determined by simulation or tryout workpiece (minimal form board) is first embossed with the raised preform Gesenk réelle 6b and this composite of the three parts is then without
- the preform punch 8 and the preform die 6 are adapted to one another in such a way that an air gap 10 is formed (FIG. 4).
- an air gap 10 is formed (FIG. 4).
- the air gap 10 is preferably 0.5 times to 5 times the workpiece thickness.
- a preformed component 3b As schematically illustrated in FIG. 5, as a result of the preforming, there is a preformed component 3b, the peripheral area of which is smaller by a certain amount (for example 0.1 to 10%) than the desired finished-molded component dictates in the frame area, in the floor area and / or in the
- Flange region may preferably have radial waves 12, which have little or no thickening.
- the present example in particular the
- the preformed component 3b slightly larger than the preformed component dictates. Additionally or alternatively, the length of the flange portion of the preformed member 3b may be larger than the final molded component dictates.
- the preformed component 3b is then inserted into the calibration tool 2 and calibrated to form a finished molded component 3c (FIG. 11).
- the calibration tool 2 comprises a calibration punch 20 and a calibration die 22.
- the calibration punch 20 has a first outer calibration punch portion 20a and a second inner calibration punch portion 20b or a calibration punch base movable relative thereto.
- the calibration die 22 includes a first outer one Calibration die portion 22a and a relatively movable second inner gauge die portion 22b or gauge die bottom.
- the first calibration die section 22a has a countersink 24 in the area of the flange of the preformed component 3b, so that a shoulder 26 projecting on the calibration die 22 fits in a form-fitting manner in the latter.
- the calibration punch 20 and the calibration die 22 of the calibration tool 2 are designed so that in the end position the finished molded component is completely described by the cavity between them.
- the calibration tool 2 is designed for recording in a press. If no auxiliary drives are used, the calibration stamp base 20b
- the first calibration die section 22a for example, through the stamp plate of the press
- the first calibration stamp portion 20a is, for example, on the press base plate.
- the press base plate In individual cases, lower and upper air and Gesenk and
- the preformed member 3b is first placed in a defined position on the raised calibration die bottom 22b or a part of the Kalibrier- Gesenkabitess 22a and there in a suitable manner, for example on
- the calibrating die bottom 20b moves onto the calibration die bottom 22b, partially compressing the bottom region of the preformed component 3b (FIG. 7). However, this with a small, defined distance of about 0.5 times to 5 times the workpiece thickness.
- the preformed component is now positioned on the height side within the calibration die 22, which is shown in FIG. 8 and enlarged in FIG. 9.
- the second, outer calibrating punch portion 20a of the calibrating punch 20 moves into the preformed component 3b and expands it more and more.
- the stretching thereby ensures that existing shafts 12 in the frame region of the preformed component 3b are circumferentially stretched and thereby removed and that the frame region of the preformed component 3b assumes the shape of the frame region of the finished molded component 3c.
- the material for the expansion takes the process both from the frame area as well as from the floor area, which is indeed not yet formed by the distancing final.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Forging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016116758.4A DE102016116758A1 (de) | 2016-09-07 | 2016-09-07 | Verfahren und Vorrichtung zur Herstellung von geformten, insbesondere flanschbehafteten Blechbauteilen |
PCT/EP2017/071696 WO2018046356A1 (de) | 2016-09-07 | 2017-08-30 | Verfahren und vorrichtung zur herstellung von geformten, insbesondere flanschbehafteten blechbauteilen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3509772A1 true EP3509772A1 (de) | 2019-07-17 |
Family
ID=59895274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17768378.6A Withdrawn EP3509772A1 (de) | 2016-09-07 | 2017-08-30 | Verfahren und vorrichtung zur herstellung von geformten, insbesondere flanschbehafteten blechbauteilen |
Country Status (6)
Country | Link |
---|---|
US (1) | US20190193136A1 (de) |
EP (1) | EP3509772A1 (de) |
CN (1) | CN109689243B (de) |
DE (1) | DE102016116758A1 (de) |
MX (1) | MX2019002585A (de) |
WO (1) | WO2018046356A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109500230A (zh) * | 2018-11-30 | 2019-03-22 | 四川航天长征装备制造有限公司 | 一种筒件成形及其法兰边校形方法 |
CN109772936B (zh) * | 2019-03-27 | 2023-12-26 | 河北欧瑞特铝合金有限公司 | 一种带有上下两层法兰的铝合金风扇校形工装及校形方法 |
CN112222272B (zh) * | 2020-09-24 | 2022-05-17 | 中国航发贵州黎阳航空动力有限公司 | 一种头部外环的加工方法 |
CN112427559B (zh) * | 2020-10-22 | 2022-09-16 | 浙江美联智能科技有限公司 | 包覆锭子的锭盖成型方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5452599A (en) | 1993-12-14 | 1995-09-26 | Motor Wheel Corporation | Method and apparatus for producing vehicle wheel rims |
JPH07314068A (ja) * | 1994-05-30 | 1995-12-05 | Hokkai Can Co Ltd | 絞り缶の製造方法 |
GB0029459D0 (en) * | 2000-12-04 | 2001-01-17 | Corus Uk Ltd | Metal container suitable to accommodate a heating or cooling component and method for manufacturing it |
JP2004202541A (ja) * | 2002-12-25 | 2004-07-22 | Jfe Steel Kk | 容器の成形方法 |
DE102007059251A1 (de) | 2007-12-07 | 2009-06-10 | Thyssenkrupp Steel Ag | Herstellverfahren hoch maßhaltiger Halbschalen |
DE102008002736A1 (de) * | 2008-06-27 | 2009-12-31 | Robert Bosch Gmbh | Vorrichtung zur Bearbeitung einer Platte zu einem nanostrukturierten Formteil und ein Verfahren zur Herstellung desselben |
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 |
JP5304958B2 (ja) * | 2011-06-30 | 2013-10-02 | 新日鐵住金株式会社 | プレス成形方法 |
CN102581126B (zh) * | 2012-02-28 | 2014-10-01 | 昆山三景科技股份有限公司 | 适用于平板显示器背板圆形凸包的冲压模具及冲压方法 |
GB201217221D0 (en) * | 2012-09-26 | 2012-11-07 | Jaguar Cars | Panel bending method |
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 |
MX2016007459A (es) * | 2013-12-26 | 2016-09-08 | Nippon Steel & Sumitomo Metal Corp | Metodo de fabricacion de componente de seccion transversal en forma de sombrero. |
CN105921639B (zh) * | 2016-04-26 | 2018-07-27 | 浙江爱仕达电器股份有限公司 | 电磁电饭煲内胆的制造方法以及由此制得的内胆 |
-
2016
- 2016-09-07 DE DE102016116758.4A patent/DE102016116758A1/de not_active Withdrawn
-
2017
- 2017-08-30 US US16/330,508 patent/US20190193136A1/en not_active Abandoned
- 2017-08-30 MX MX2019002585A patent/MX2019002585A/es unknown
- 2017-08-30 CN CN201780054969.9A patent/CN109689243B/zh not_active Expired - Fee Related
- 2017-08-30 WO PCT/EP2017/071696 patent/WO2018046356A1/de unknown
- 2017-08-30 EP EP17768378.6A patent/EP3509772A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102016116758A1 (de) | 2018-03-08 |
CN109689243A (zh) | 2019-04-26 |
US20190193136A1 (en) | 2019-06-27 |
MX2019002585A (es) | 2019-07-01 |
CN109689243B (zh) | 2020-12-15 |
WO2018046356A1 (de) | 2018-03-15 |
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