EP3656480A2 - Formage u-o d'un composant courbé suivant trois axes spatiaux - Google Patents

Formage u-o d'un composant courbé suivant trois axes spatiaux Download PDF

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Publication number
EP3656480A2
EP3656480A2 EP19198564.7A EP19198564A EP3656480A2 EP 3656480 A2 EP3656480 A2 EP 3656480A2 EP 19198564 A EP19198564 A EP 19198564A EP 3656480 A2 EP3656480 A2 EP 3656480A2
Authority
EP
European Patent Office
Prior art keywords
preform
shaping
forming
spatial axis
shape
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
Application number
EP19198564.7A
Other languages
German (de)
English (en)
Other versions
EP3656480A3 (fr
Inventor
Günter Fortmeier
Aloys Schröder
Matthias Körner
Eugen Seibel
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik 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 Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Priority to EP23193022.3A priority Critical patent/EP4252931A3/fr
Publication of EP3656480A2 publication Critical patent/EP3656480A2/fr
Publication of EP3656480A3 publication Critical patent/EP3656480A3/fr
Pending 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0815—Making tubes with welded or soldered seams without continuous longitudinal movement of the sheet during the bending operation
    • 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
    • B21D22/025—Stamping using rigid devices or tools for tubular 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
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
    • 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 a sheet metal formed component from a board by means of U-O shapes, according to the features of claims 1 and 2 respectively.
  • a metallic blank is provided, which is formed into a sheet metal component in a forming tool.
  • the sheet metal component has a three-dimensional contour. This forming is usually carried out by means of a press forming tool between an upper tool and a lower tool.
  • UO shaping is known from the prior art.
  • a flat board is first provided, this flat board is pre-shaped in a U-shape and Connected to it, O-shaped, to have a closed profile in cross section.
  • the freedom of shaping can thus be significantly increased due to the intermediate molding step with the packing.
  • the freedom of shaping can also be increased by producing a U-shape or U-preform with at least three curvatures, each curved around a spatial axis, all three spatial axes being essentially perpendicular to one another.
  • An advantageous development according to the invention provides that when the U-shape of the U-shape thus produced is placed, the U-shape is placed on a component receptacle and mandrels are inserted at least on one side, preferably on both ends. The mandrels hold or fix the U-shape on the component holder. Then mold jaws are approached to the side of the U-shape. Overlap and / or offset, a die is lowered in the vertical direction. The lateral mold jaws and the die on the upper side then carry out an O-shape at least in sections, in particular completely over the length in cross section, in such a way that a closed hollow profile is produced in the cross section.
  • the flat board can have a homogeneous wall thickness, but also different wall thicknesses, for example as a tailored blank.
  • a first curvature was made in cross section by forming the U-shape.
  • the component is preferably also curved around a second spatial axis which is essentially transverse to the spatial axis of the U-shape.
  • the packing is thus pulled out of the preform again on the intermediate mold. This creates an elastic deformation of the bent legs or the bent ends. This deformation can also be plastic in part. However, the packing ensures that no inward curvature is produced on the intermediate shape.
  • the O-forming is then carried out in a further shaping step, in particular the end faces of the ends are placed against one another. These can also be welded along the longitudinal seam, for example.
  • An internal high pressure forming process can follow the O-forming.
  • the O-forming is preferably carried out in two steps, the bent ends first being freely bent further inwards and then the end faces of the ends coming together in a further process step.
  • a press-forming tool which, in cross section, has a closed mold cavity in the closed state.
  • the intermediate mold preferably has a maximum width when it is inserted into the O-mold, which width is less than the width of the mold cavity itself.
  • the height of the intermediate mold is thus flattened and the width is thereby increased, so that when the mold cavity is closed, the sheet metal forming component produced by O-molding abuts the mold cavity of the O-molding tool on all sides.
  • the preform or the intermediate form can be produced with a cross section and / or wall thickness that varies in the longitudinal direction. Precisely because the degrees of freedom of shaping are increased by intermediate molding, it is also possible to produce varying cross sections over the length of the component.
  • the O-forming is carried out as hot forming, in particular with a subsequent press hardening, so that a high tensile strength of more than 1000 MPa can be set for a hardenable steel alloy.
  • Figure 1a , 1b , 1c and 1d show a deep-drawing tool 2 in order to be formed from a flat metallic plate 1 initially provided on a deep-drawing tool 2 for U-forming and thus into a preform.
  • the circuit board 1 is inserted into the deep-drawing tool 2 and a hold-down device 4 is lowered onto a die 3, shown in FIG Figure 1b .
  • a first curvature 5 is generated about a spatial axis X, so that the board 1 is preformed with an arc or a shaft. It would also be possible to produce two or three curvatures, each offset in parallel about the first spatial axis X, for example according to the principle of a wave profile.
  • a forming die 6 moves into the deep-drawing tool 2 and creates a second curvature 7, shown in FIG Figure 2 around a second spatial axis Y.
  • the punch 6 is also curved in its longitudinal direction about a third spatial axis Z. This is particularly evident in the top view according to Figure 1c .
  • the forming die 6 By moving the forming die 6 into the plate 1, not only is the second curvature 7 generated about the second spatial axis Y, but also the first curvature 5 about the first spatial axis X on the U preform 11, and also a third curvature 29 ⁇ m A third spatial axis Z.
  • a plurality of third curvatures can also take place around the spatial axis Z, so that a top view according to FIG Figure 1c or also shown later in the U preform according to Figure 3b a waveform is generated in plan view.
  • the second spatial axis Y and the first spatial axis X and the third spatial axis Z preferably run transversely to one another, but they do not have to intersect.
  • spatial axes X, Y and Z can also be arranged in an angular range of 60 to 110 degrees, in particular 70 to 100 degrees to one another.
  • the spatial axes do not have to intersect, they can run offset to one another. If both were projected into one plane, they would run in the above-mentioned angular range or transversely to one another.
  • a U preform 11 is thus created, which according to Figure 3a , b and c has a first curvature 5 about a first spatial axis X and a second curvature 7 about a second spatial axis Y, and a third curvature 29 about a third spatial axis Z.
  • the second spatial axis Y follows the curvature 5 about the first spatial axis X.
  • the U preform 11 has a U shape, the leg 8 of which is trimmed at each end 9. In particular, this trimming takes place close to the final contour. This results in end faces 10 at the ends 9. The end faces 10 extend over the length L of the U preform 11. Now the intermediate shaping according to the invention, shown in FIG Figures 4 , 5a and 5b .
  • the U preform 11 is placed on an anvil 12 and a filler 13 is inserted into the preform 11. Then the legs 8 and in particular in their end region 9 are bent by further tool parts 14 of an intermediate forming tool 15. This is done in such a way that the ends 9 of the legs 8 are bent toward one another. They therefore overlap the filler body 13, shown in FIG Figure 5a .
  • the tool parts 14 are then opened, indicated by the dashed arrows. So that the filler 13 can now be pulled out of the intermediate mold 16 produced therewith, at least one pin 17 is provided which engages through the filler 13 and presses on the bottom 18 of the intermediate mold 16, so that when the filler body is pulled out, the legs 8 deform elastically outward be what in Figure 5b is shown. A slight plastic deformation of the legs 8 can also take place here.
  • This intermediate molding step is then followed by O-shaping, particularly preferably in two further process steps.
  • the intermediate mold 16 thus produced is in turn placed on another anvil 19 and with Tool parts 20 of an O-forming tool, the legs 8 and in particular the ends 9 of the legs 8 are bent further inwards, shown in FIG Figure 7 .
  • a holding pin 21 is provided, which presses the bottom 18 of the intermediate shape onto the anvil 19, so that the legs 8 are bent further towards one another, as shown in FIG Figures 6 and 7 .
  • a press-forming tool 24 is then used, which has an upper tool 22 and a lower tool 23.
  • a mold cavity 25 is in accordance with Figure 10 with a width B25 wider than a width B16 of the intermediate mold 16 after the first process step of O-molding (cf. Figure 10 ).
  • the press forming tool 24 is consequently closed, shown in FIG Figure 9 .
  • the result is a closed mold cavity.
  • the end faces of the ends are placed against one another and a sheet metal conversion molded part 26, also called a molded component, which is closed in cross section, is produced. In particular, with its outer lateral surface 27, this lies on all sides against the inner lateral surface 28 of the mold cavity 25.
  • Figures 11, 12 , 13 and 14 show an alternative embodiment of the method according to the invention with regard to O-forming.
  • Figures 11 and 12 show a cross section through the same tool at different times.
  • Figures 13 and 14 show a respective side view and cross-sectional view of the same tool at different times.
  • the U-shape can be a U-shape made by U-shapes or the U-preform made according to the invention.
  • it can also be the intermediate form 16 which is associated with the manufacturing step in Figure 5b was produced. In this intermediate form 16 is then modified Figure 6 to 9 only one tool used for further O-forming.
  • the legs 8 are bent towards one another in a transverse direction Q by lateral shaping jaws 31.
  • an upper die 32 begins to lower, so that in particular the ends 9 of the legs 8 are formed towards one another and thereby the O-forming, that is to say the production of a hollow profile closed in cross section, is produced.
  • This forming process is completed in Figure 12 and 14 in which the manufactured Sheet metal component 33 is shown. So that, in particular, the intermediate shape or U-shape does not tip after being placed on the component receptacle 30, mandrels 34 are inserted at the end. This insertion of the mandrels 34 takes place for the length section, partly in the longitudinal direction of the intermediate mold 16.
  • the intermediate mold 16 is fixed during the shaping process and is held on the component receptacle 30 by tilting or other slipping.
  • O-molding process shown are then, but not shown in detail, the mandrels 34, with respect to the direction of the picture obliquely to the top left and obliquely to the top right, pulled out of the sheet metal component 33 produced laterally or at the end.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Structure Of Printed Boards (AREA)
EP19198564.7A 2018-09-24 2019-09-20 Formage u-o d'un composant courbé suivant trois axes spatiaux Pending EP3656480A3 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23193022.3A EP4252931A3 (fr) 2018-09-24 2019-09-20 Formage u-o d'un composant courbé selon trois axes spatiaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018123456.2A DE102018123456A1 (de) 2018-09-24 2018-09-24 U-O-Formen eines um drei Raumachsen gekrümmten Bauteils

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP23193022.3A Division EP4252931A3 (fr) 2018-09-24 2019-09-20 Formage u-o d'un composant courbé selon trois axes spatiaux

Publications (2)

Publication Number Publication Date
EP3656480A2 true EP3656480A2 (fr) 2020-05-27
EP3656480A3 EP3656480A3 (fr) 2020-06-24

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Family Applications (2)

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EP19198564.7A Pending EP3656480A3 (fr) 2018-09-24 2019-09-20 Formage u-o d'un composant courbé suivant trois axes spatiaux
EP23193022.3A Pending EP4252931A3 (fr) 2018-09-24 2019-09-20 Formage u-o d'un composant courbé selon trois axes spatiaux

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EP23193022.3A Pending EP4252931A3 (fr) 2018-09-24 2019-09-20 Formage u-o d'un composant courbé selon trois axes spatiaux

Country Status (4)

Country Link
US (1) US11577294B2 (fr)
EP (2) EP3656480A3 (fr)
CN (1) CN110935759B (fr)
DE (1) DE102018123456A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN112845697A (zh) * 2020-12-29 2021-05-28 广州奇典皮件有限公司 一种用于钣金件生产的角度可调式折弯机及其折弯方法
CN115846471A (zh) * 2023-02-20 2023-03-28 江苏世烨鼎电子科技有限公司 一种三级联动折弯机

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MX2020009202A (es) * 2018-03-30 2020-10-08 Nippon Steel Corp Metodo para la fabricacion de parte conformada.
FR3113615A1 (fr) * 2020-08-27 2022-03-04 Faurecia Systemes D'echappement Procédé de mise en forme d’une pièce tubulaire comportant une cavité
CN112387820A (zh) * 2020-10-22 2021-02-23 国营芜湖机械厂 一种gh4169镍基高温合金箍带弯曲成形方法

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CA2962236A1 (fr) 2014-10-03 2016-04-07 Nippon Steel & Sumitomo Metal Corporation Procede de fabrication d'un produit forme a la presse, et produit forme a la presse

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CN112845697B (zh) * 2020-12-29 2022-09-16 东莞市创鑫鸿盛实业有限公司 一种用于钣金件生产的角度可调式折弯机及其折弯方法
CN115846471A (zh) * 2023-02-20 2023-03-28 江苏世烨鼎电子科技有限公司 一种三级联动折弯机

Also Published As

Publication number Publication date
US11577294B2 (en) 2023-02-14
US20200114408A1 (en) 2020-04-16
EP3656480A3 (fr) 2020-06-24
EP4252931A3 (fr) 2024-03-13
CN110935759B (zh) 2023-03-07
CN110935759A (zh) 2020-03-31
DE102018123456A1 (de) 2020-03-26
EP4252931A2 (fr) 2023-10-04

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