US20110162431A1 - Partially reinforced hollow profile - Google Patents

Partially reinforced hollow profile Download PDF

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Publication number
US20110162431A1
US20110162431A1 US12/673,277 US67327708A US2011162431A1 US 20110162431 A1 US20110162431 A1 US 20110162431A1 US 67327708 A US67327708 A US 67327708A US 2011162431 A1 US2011162431 A1 US 2011162431A1
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US
United States
Prior art keywords
blank
reinforcing members
forming
hollow profile
rolling
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.)
Abandoned
Application number
US12/673,277
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English (en)
Inventor
Thomas Flehmig
Jörg GORSCHLUTER
Lothar HOMIG
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
Original Assignee
ThyssenKrupp Steel Europe AG
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 filed Critical ThyssenKrupp Steel Europe AG
Assigned to THYSSENKRUPP STEEL EUROPE AG reassignment THYSSENKRUPP STEEL EUROPE AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GORSCHLUETER, JOERG, HOEMIG, LOTHAR, FLEHMIG, THOMAS
Publication of US20110162431A1 publication Critical patent/US20110162431A1/en
Abandoned legal-status Critical Current

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    • 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
    • B21C37/065—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 starting from a specific blank, e.g. tailored blank
    • 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
    • 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
    • B21C37/15—Making tubes of special shape; Making tube fittings

Definitions

  • the invention relates to a method for producing partly reinforced hollow profiles from a metal, in particular from steel or a steel alloy.
  • Partly reinforced hollow profiles are used particularly in the body structures of motor vehicles but also in other technical fields to enable a certain strength to be achieved at the same time as minimal weight.
  • Hollow profiles of this kind, and in particular tubes can be produced in the form of so-called “tailored tubes” which comprise tubes of different wall thicknesses and/or made of different materials which are welded together.
  • the component so produced is able for example to absorb and transmit higher forces at points of greater wall thickness.
  • the wall thickness is reduced to the minimum size required, thus keeping the weight of the component low.
  • German patent application DE 102 21 880 A1 for reinforcing members which wholly or partly surround a tube to be slid onto the tube requiring reinforcement and then to be formed by an internal high pressure process in such a way that the partial reinforcing members have a positively interengaged connection to the tube.
  • the internal high pressure forming process is expensive and the production costs for a partly reinforced tube are thus relatively high.
  • DE 198 19 484 A1 is for a blank to have a reinforcement arranged on it before the forming process, and for the blank to be provided with this reinforcement while it is being deep drawn into a U-shaped profile.
  • an aspect of the present invention is to propose a simple and inexpensive method for producing partly reinforced hollow profiles from a metal.
  • the aspect as derived above is achieved by virtue of the fact that a blank, having a plurality of metal reinforcing members arranged on the blank, is formed into a hollow profile by using the rolling-in technique or by U-to-O forming, the reinforcing members arranged on the blank being, after the forming, in a state where they are connected to the formed blank by positive interengagement, the preference being for a connection to be made only by positive interengagement.
  • the preform may for example be V-shaped or U-shaped in cross-section.
  • the possibility does, however, also exist of cross-sectional shapes of a different kind being provided for the preform.
  • the rolling-in technique can be performed with the shaped core, which means that the shaped core causes the reinforcing members to be impressed into connection with the blank. If the reinforcing members are situated on the outside, it is also possible, in principle, for the rolling-in technique to be performed without a shaped core.
  • the method according to the invention it is therefore possible for equipment which already exists to be used for producing partly reinforced hollow profiles, which means that the capital costs are low.
  • the method according to the invention is characterized by short cycle times, which also contribute to making the method highly economical.
  • the stress on the material during the U-to-O forming and during the rolling-in technique is particularly low, which means that further forming operations on the hollow profile produced are also possible.
  • a good match to the intended purpose of the partly reinforced hollow profile is achieved in that the reinforcing members have wall-thicknesses which are matched to the stress.
  • the different wall-thicknesses are able to make allowance for regions of the hollow profile which are more and/or less severely stressed.
  • the reinforcing members may also be composed of materials which are matched to the stress.
  • different steel alloys can be used.
  • the advantage of this embodiment lies in the fact that materials which are not weldable can also be used, because the reinforcing members are connected to the formed blank by the positive interengagement.
  • reinforcing members arranged on the inside call for the use of an internal shaped core when the rolling-in technique is being used or when U-to-O forming is being performed to cause the stiffening members to be impressed into connection with the blank forming the hollow profile.
  • a closed hollow profile can be provided by welding the opposing edges of the formed blank together by a longitudinal seam.
  • a partly reinforced tubular hollow profile of circular cross-section is produced, a partly reinforced hollow profile which is particularly easy to form can be provided.
  • a partly reinforced hollow profile produced in this way can for example be used as a starting product for the production of other, more complex, hollow profiles.
  • the reinforcing members are preferably fixed in place and/or positioned on the blank before the forming.
  • What “fixing in place” means for the purposes of the present invention is that the reinforcing members are merely secured against slipping during the forming. This can be done on the one hand by the shape of the die itself, but on the other hand what may also be used for the fixing in place are tack welds and/or spots of adhesive-bonding or a slight positive interengagement achieved by forming the blank and the reinforcing members, for example into a folded-together U-shape. Positioning can also take place on the blanks. As compared with the “solid” connection of the reinforcing members to the blank to be formed, which connection is known from the prior art, the cost and complication of the work is considerably less.
  • the reinforcing members may be secured against slipping axially by, in addition, firmly bonding the reinforcing members to the blank, after the forming, by tack welds or weld seams and/or spots of adhesive-bonding.
  • Additional fixing in place of a particularly simple kind of at least one reinforcing member can be achieved by causing at least one reinforcing member to surround the circumference of the hollow profile and causing it to be welded together at the opposing edges after the forming.
  • FIG. 1 is a view in section of an embodiment of a blank having reinforcing members arranged thereon, before forming.
  • FIG. 2 is also a view in section, of one half of a hollow profile after a blank as shown in FIG. 1 has been formed into a tube according to one embodiment of method according to the invention.
  • FIG. 3 shows an embodiment of a pre-formed blank for fixing the reinforcing members in place.
  • FIGS. 4 a and 4 b are schematic axial views in plan of an apparatus for carrying out the method according to the invention, at two different points in time.
  • FIG. 5 is a schematic axial view in plan of an apparatus for carrying out the rolling-in technique with a shaped core by means of a further embodiment of the method according to the invention.
  • FIG. 6 is a schematic view in plan of an apparatus for carrying out the rolling-in technique without a shaped core according to a final embodiment of method according to the invention.
  • FIG. 1 Shown in FIG. 1 , in a view in section, is a blank 1 having reinforcing members 2 ′, 2 ′′, 2 ′′′ arranged thereon, in the unformed state.
  • the reinforcing members 2 ′, 2 ′′, 2 ′′′ which are also referred to as patches, are either not fixed in place ( 2 ′) or are fixed by means of tack welds or spot of solder or brazing 3 or a layer of adhesive 4 against slipping on the blank 1 .
  • the layer of adhesive 4 may also take the form of a spot of adhesive-bonding.
  • the purpose of the fixings effected by means of the tack weld or the spot of solder or brazing 3 and the layer of adhesive 4 or the spot of adhesive-bonding is merely to protect the reinforcing members against slipping, when for example the blank is being placed in the apparatus for forming. There is no need for a solid connection between blank and reinforcing member.
  • the reinforcing members 2 ′, 2 ′′, 2 ′′′ are impressed into connection with the formed blank 1 , and a positive interengagement is thus made between formed blank 1 and reinforcing members 2 ′, 2 ′′, 2 ′′′.
  • the positive interengagement is enough to permanently connect the reinforcing members 2 ′, 2 ′′, 2 ′′′ to the formed blank.
  • FIG. 3 A further possible way of holding the reinforcing members 2 in position on the blank 1 is shown in FIG. 3 in a schematic section through the pre-formed blank 1 .
  • the pre-formed blank 1 has been formed into a V, on which the reinforcing member 2 is arranged in positive interengagement and/or by non-positive fit.
  • the preform which is produced in this way may be formed into a closed hollow body by, for example, a U-to-O method of forming. This is what is shown in FIGS. 4 a and 4 b in a schematic axial plan view of an apparatus 5 for carrying out U-to-O forming.
  • An apparatus 5 for carrying out U-to-O forming comprises a die which may for example consist of two die-halves 6 , 7 .
  • the die-halves 6 , 7 form the shape of the hollow profile to be produced.
  • the blank 1 is placed in the die-half 7 with the reinforcing members 2 arranged on the blank 1 , which are indicated in the present case only by a dotted line, and the die-halves 6 and 7 are then closed together.
  • the blank 1 and the reinforcing members 2 are formed into a closed hollow profile, as shown in FIG. 4 b .
  • the reinforcing members 2 which are situated on the outside, have been impressed into connection with the blank 1 in the way which has already been shown in FIG. 2 , and they are thus connected to the blank forming the hollow profile by positive interengagement.
  • the opposing edges of the blank and the reinforcing members can then be welded together, by means for welding which are not shown in the drawings, thus enabling a closed hollow profile to be produced.
  • FIGS. 4 a and 4 b are a method of performing U-to-O forming where the reinforcing members 2 are situated on the outside, it is also easy to imagine reinforcing members 2 situated on the inside being used, though in this case a shaped core is used to impress the reinforcing members situated on the inside in a similar way to what happens in the rolling-in technique which is described below.
  • FIG. 5 An embodiment of an apparatus for performing the rolling-in technique when using reinforcing members situated on the inside is shown in a schematic plan view in FIG. 5 .
  • the die of the apparatus shown in FIG. 5 comprises two die-halves 8 , 9 .
  • the blank 1 with the reinforcing members 2 arranged thereon, is placed between the die-halves 9 and 8 .
  • a shaped core 10 which, when the die-halves 8 , 9 are closed together, causes the reinforcing members 2 situated on the inside to be impressed into connection with the blank 1 .
  • a blade 11 may be provided which extends in the axial direction of the hollow profile to be produced and which serves to produce a gap at the joint between the opposing edges of the formed blank 1 .
  • FIG. 6 shows an apparatus for performing the rolling-in technique without a shaped core, with the reinforcing members 2 being provided on the outside of the hollow profile which is produced later. If, however, reinforcing members 2 situated both on the inside and the outside are to be formed together with the blank 1 , it is necessary for a shaped core 10 to be used.
  • the apparatus described above for carrying out the method according to the invention are apparatus of conventional and relatively simple construction which result in low capital costs.
  • both when using U-to-O forming and when using the rolling-in technique partly reinforced hollow profiles, and in particular ones having a plurality of reinforced regions, can be inexpensively produced.
US12/673,277 2007-08-14 2008-07-29 Partially reinforced hollow profile Abandoned US20110162431A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007038713A DE102007038713B4 (de) 2007-08-14 2007-08-14 Verfahren zur Herstellung von partiell verstärkten Hohlprofilen
DE102007038713.1 2007-08-14
PCT/EP2008/059930 WO2009021838A2 (de) 2007-08-14 2008-07-29 Verfahren zur herstellung von partiell verstärkten hohlprofilen

Publications (1)

Publication Number Publication Date
US20110162431A1 true US20110162431A1 (en) 2011-07-07

Family

ID=40241484

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/673,277 Abandoned US20110162431A1 (en) 2007-08-14 2008-07-29 Partially reinforced hollow profile

Country Status (4)

Country Link
US (1) US20110162431A1 (de)
CN (1) CN101815591A (de)
DE (1) DE102007038713B4 (de)
WO (1) WO2009021838A2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015197507A (ja) * 2014-03-31 2015-11-09 キヤノン株式会社 ローラ部材、ローラ支持機構、および画像形成装置
US9457633B2 (en) * 2014-10-21 2016-10-04 Benteler Automobiltechnik Gmbh Cross member system for a coupling device a motor vehicle

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009022391B4 (de) 2009-05-22 2011-06-22 Federal-Mogul Sealing Systems GmbH, 57562 Verfahren zur Herstellung ringförmig ausgebildeter Dichtungselemente
JP2014188383A (ja) * 2013-03-26 2014-10-06 Hitachi Ltd 移動電極型電気集塵装置の集塵板とその製造方法
DE102019129045A1 (de) * 2019-10-28 2021-04-29 Bayerische Motoren Werke Aktiengesellschaft Speichereinrichtung zum Speichern von elektrischer Energie für ein Kraftfahrzeug, Kraftfahrzeug sowie Verfahren zum Herstellen eines Speichergehäuses für eine Speichereinrichtung
CN113438813B (zh) * 2021-06-21 2022-04-26 淮安帝泰华懋精密科技有限公司 一种fpc补强钢片收料装置

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US4125936A (en) * 1977-09-01 1978-11-21 Rozmus John J Composite strip for fabricating spring contacts
US6164370A (en) * 1993-07-16 2000-12-26 Olin Corporation Enhanced heat exchange tube
US20020063145A1 (en) * 2000-11-29 2002-05-30 Lotspaih Steven R. Reinforced hydroform tube
US20040250404A1 (en) * 2003-01-14 2004-12-16 Cripsey Timothy J. Process for press forming metal tubes
US20050178456A1 (en) * 2002-05-24 2005-08-18 Eiji Tsuru Uoe steel pipe with excellent crash resistance, and method of manufacturing the uoe steel pipe

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TW381980B (en) * 1996-04-30 2000-02-11 Showa Aluminum Corp Shading mask for automobile and manufacturing thereof
DE19737969A1 (de) 1997-08-30 1998-03-19 Daimler Benz Ag Umformbares, bereits vorgeformtes, dünnwandiges Halbfabrikat aus insbesondere Metall
DE19819484B4 (de) 1998-04-30 2008-08-14 Volkswagen Ag Karosseriesäule bzw. Verfahren zur Herstellung einer Karosseriesäule für eine Fahrzeugkarosserie
EE200200004A (et) * 1999-07-15 2003-02-17 Sch�Co International Kg Sissepaigutatud tugevduselementidega plastmassistõõnesprofiil
DE10221880B4 (de) 2002-05-16 2007-03-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung eines verstärkten Rohrs, ein solches Rohr und dessen Verwendung
CN1520946A (zh) * 2003-01-29 2004-08-18 黄诣壬 金属管材成型法
EP1591173A1 (de) * 2004-04-27 2005-11-02 Corus Staal BV Rohrförmiger Rohling
EP1595611A2 (de) * 2004-04-27 2005-11-16 Corus Staal BV Rohrförmiger rohling
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125936A (en) * 1977-09-01 1978-11-21 Rozmus John J Composite strip for fabricating spring contacts
US6164370A (en) * 1993-07-16 2000-12-26 Olin Corporation Enhanced heat exchange tube
US20020063145A1 (en) * 2000-11-29 2002-05-30 Lotspaih Steven R. Reinforced hydroform tube
US20050178456A1 (en) * 2002-05-24 2005-08-18 Eiji Tsuru Uoe steel pipe with excellent crash resistance, and method of manufacturing the uoe steel pipe
US20040250404A1 (en) * 2003-01-14 2004-12-16 Cripsey Timothy J. Process for press forming metal tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015197507A (ja) * 2014-03-31 2015-11-09 キヤノン株式会社 ローラ部材、ローラ支持機構、および画像形成装置
US9457633B2 (en) * 2014-10-21 2016-10-04 Benteler Automobiltechnik Gmbh Cross member system for a coupling device a motor vehicle

Also Published As

Publication number Publication date
CN101815591A (zh) 2010-08-25
DE102007038713B4 (de) 2009-07-23
WO2009021838A2 (de) 2009-02-19
WO2009021838A3 (de) 2009-04-02
DE102007038713A1 (de) 2009-02-19

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AS Assignment

Owner name: THYSSENKRUPP STEEL EUROPE AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FLEHMIG, THOMAS;GORSCHLUETER, JOERG;HOEMIG, LOTHAR;SIGNING DATES FROM 20100322 TO 20100323;REEL/FRAME:024296/0843

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION