EP1539393A1 - Presse zur herstellung von rastnuten in rohren mit einem in dem rohr angeordneten dorn und einem der hergestellten nut entsprechenden teil - Google Patents

Presse zur herstellung von rastnuten in rohren mit einem in dem rohr angeordneten dorn und einem der hergestellten nut entsprechenden teil

Info

Publication number
EP1539393A1
EP1539393A1 EP03787849A EP03787849A EP1539393A1 EP 1539393 A1 EP1539393 A1 EP 1539393A1 EP 03787849 A EP03787849 A EP 03787849A EP 03787849 A EP03787849 A EP 03787849A EP 1539393 A1 EP1539393 A1 EP 1539393A1
Authority
EP
European Patent Office
Prior art keywords
tube
mandrel
notching
stamping
notches
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.)
Granted
Application number
EP03787849A
Other languages
English (en)
French (fr)
Other versions
EP1539393B1 (de
Inventor
Jean-Claude Blanchet
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.)
Numalliance SAS
Original Assignee
Numalliance SAS
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 Numalliance SAS filed Critical Numalliance SAS
Publication of EP1539393A1 publication Critical patent/EP1539393A1/de
Application granted granted Critical
Publication of EP1539393B1 publication Critical patent/EP1539393B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • 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
    • 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 tool and a machine for notching a tube, in particular a headrest armature tube for a motor vehicle.
  • the invention applies in particular, but not limited to height-adjustable head restraints, the frame of which is composed of two parallel branches, at least one of which has a plurality of notches each defining a position for adjusting the support -head while fulfilling one of the following functions: anti-ejection in raised-maximum position, adjustment during travel, maximum low restraint.
  • FIG. 1 Different profiles of such notches are shown diagrammatically in FIG. 1 and one of the end notches, with orthogonal profile, is drawn in detail in FIG. 2.
  • these notches cooperate with latches integrated in guide sockets provided at the top of the seat back.
  • these notches are easily produced whatever their profile, for example by machining, or by cold deformation (stamping).
  • the headrest frames progressively pass from an execution in rod or wire towards an execution in tube for which problems of realization of the notches arise.
  • the process of machining the notches remains applicable to the tubes by milling or broaching if the thickness of the tube allows it and if the weakening of section gives the product a rigidity and a resistance conforming to the rigidity requirements.
  • the invention aims to overcome the aforementioned drawbacks and to propose a machine capable of producing several notches simultaneously in the wall of a tube, without restriction of shape.
  • the invention provides a tool for notching a tube, in particular but not limited to the notching of one or two tubes of a head support frame for a motor vehicle, characterized in that it comprises the elements following: - a fixed lower matrix in the form of a half-shell, the internal cavity of which is capable of conforming to the semi-cylindrical external shape of a notched tube,
  • a mandrel capable of being inserted inside the notching tube and capable of reserving in the internal cavity of the tube, one or more volumes, for the expansion of material resulting from the stamping.
  • FIG. 1 schematic representation of a head support frame branch comprising a series of notches of different profiles
  • FIG. 2 notch end with orthogonal profile
  • Figure 3 schematic diagram of the innovative part of a machine according to the invention
  • Figure 4 vertical section along AA in Figure 3.
  • a machine consists essentially of a press on which is mounted at least one notching tool (1) specific to the invention and which comprises the following elements: - a fixed lower die, not shown and in the form of a half shell donHa- internal- cavity-is-suitable-for- marry- the outer-semi-cylindrical shape of a notched tube (2), a blank-type device of the spring type or actuated by separate cylinders, to ensure appropriate clamping of a tube (2) or two tubes simultaneously , at least one movable upper punch (3) whose end is shaped in a complementary shape (4) opposite to that of one of the notches (5) with realize, and able to move perpendicular to the longitudinal axis of the tube, a mandrel (6) able to be introduced inside the notching tube and the section of which has been provided to solve execution problems such as it will be explained later.
  • the machine may include two notching tools (1) as described above.
  • each notching tool can also be provided to comprise several aligned upper punches (3), each intended for producing one of the notches of the same branch (2) of the frame, and actuated simultaneously during a same stamping operation.
  • the invention provides for using a mandrel whose section does not fill the entire internal cavity of the tube, so as to reserve one or more volumes for the expansion of material, and to be able to be extracted. of the tube after stamping.
  • the cylindrical mandrel has a modified zone: the section of the mandrel (6) necessarily has on the one hand a planar zone (7) along a plane parallel to the longitudinal direction (10) of the mandrel and forming anvil function during stamping, and on the other hand two side blanks (8,9) -for-example- (but not necessarily) -disposed symmetrically with respect to the vertical median plane (11) of the mandrel to release on each side of the mandrel an expansion volume (12, 13).
  • the two blanks are planar and determine between them a predetermined angle ( ⁇ ).
  • the width (d) of the anvil and the predetermined angle ( ⁇ ) are calculated as a function of the dimensions of the tube and the notch to be obtained while guaranteeing the desired rigidity and safety.
  • a machine according to the invention is a press comprising at least one notching tool and means for moving and positioning a mandrel in a notching tube, along its longitudinal axis, in one direction or the other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Forging (AREA)
EP03787849A 2002-07-29 2003-07-11 Presse zur herstellung von rastnuten in rohren mit einem in dem rohr angeordneten dorn und einem der hergestellten nut entsprechenden teil Expired - Lifetime EP1539393B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0209637A FR2842752B1 (fr) 2002-07-29 2002-07-29 Presse pour le crantage d'un tube comportant en combinaison un mandrin introduit a l'interieur du tube et une piece conformee selon le cran a realiser.
FR0209637 2002-07-29
PCT/FR2003/002187 WO2004016367A1 (fr) 2002-07-29 2003-07-11 PRESSE POUR LE CRANTAGE D'UN TUBE COMPORTANT UN MANDRIN ET UN POINçON

Publications (2)

Publication Number Publication Date
EP1539393A1 true EP1539393A1 (de) 2005-06-15
EP1539393B1 EP1539393B1 (de) 2006-08-09

Family

ID=30011588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03787849A Expired - Lifetime EP1539393B1 (de) 2002-07-29 2003-07-11 Presse zur herstellung von rastnuten in rohren mit einem in dem rohr angeordneten dorn und einem der hergestellten nut entsprechenden teil

Country Status (7)

Country Link
EP (1) EP1539393B1 (de)
AT (1) ATE335557T1 (de)
AU (1) AU2003264713A1 (de)
DE (1) DE60307484T2 (de)
ES (1) ES2270149T3 (de)
FR (1) FR2842752B1 (de)
WO (1) WO2004016367A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005027584A1 (de) * 2005-06-14 2006-12-28 Ulrich Huperz Schweißtechnik GmbH & Co.KG Werkstück mit einer nicht-spanend erzeugten Kerbe
RU2359775C2 (ru) * 2007-04-13 2009-06-27 Открытое акционерное общество "Новосибирский завод химконцентратов" Штамп для формовки выступов в трубчатой детали
RU2359774C2 (ru) * 2007-04-13 2009-06-27 Открытое акционерное общество "Новосибирский завод химконцентратов" Штамп-автомат для формовки трубчатых деталей
DE102007033604B3 (de) * 2007-07-17 2009-01-22 Muhr Und Bender Kg Kopfstützen-Tragelement
RU2481169C2 (ru) * 2011-07-21 2013-05-10 Открытое акционерное общество "Новосибирский завод химконцентратов" Штамп-автомат для формовки выступов в трубчатой детали
FR2991893B1 (fr) 2012-06-15 2015-01-02 Numalliance Procede de crantage de tube, et machine de crantage associee
CN117299930A (zh) * 2023-09-21 2023-12-29 中山市湘寿五金制品有限公司 一种打点机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58218339A (ja) * 1982-06-11 1983-12-19 Daido Steel Co Ltd 車両用ステアリングロツド及びその製造法
JPH08174126A (ja) * 1994-12-27 1996-07-09 Showa:Kk ラック軸製造装置
JP3995182B2 (ja) * 1999-12-27 2007-10-24 高周波熱錬株式会社 中空なラックバーの製造方法および装置
JP2001239340A (ja) * 2000-02-29 2001-09-04 Aisin Seiki Co Ltd 支持棒およびその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004016367A1 *

Also Published As

Publication number Publication date
WO2004016367A1 (fr) 2004-02-26
DE60307484D1 (de) 2006-09-21
ATE335557T1 (de) 2006-09-15
DE60307484T2 (de) 2007-03-29
FR2842752B1 (fr) 2005-02-11
FR2842752A1 (fr) 2004-01-30
ES2270149T3 (es) 2007-04-01
AU2003264713A1 (en) 2004-03-03
EP1539393B1 (de) 2006-08-09

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