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WO2004016367A1 - Press for tube notching provided with a mandrel which is arranged inside said tube and a piece corresponding to produced notch - Google Patents

Press for tube notching provided with a mandrel which is arranged inside said tube and a piece corresponding to produced notch Download PDF

Info

Publication number
WO2004016367A1
WO2004016367A1 PCT/FR2003/002187 FR0302187W WO2004016367A1 WO 2004016367 A1 WO2004016367 A1 WO 2004016367A1 FR 0302187 W FR0302187 W FR 0302187W WO 2004016367 A1 WO2004016367 A1 WO 2004016367A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
mandrel
notching
stamping
notches
Prior art date
Application number
PCT/FR2003/002187
Other languages
French (fr)
Inventor
Jean-Claude Blanchet
Original Assignee
Numalliance
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 filed Critical Numalliance
Priority to AU2003264713A priority Critical patent/AU2003264713A1/en
Priority to DE60307484T priority patent/DE60307484T2/en
Priority to EP03787849A priority patent/EP1539393B1/en
Publication of WO2004016367A1 publication Critical patent/WO2004016367A1/en

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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention relates to a press for tube notching provided with at least one tool which comprises the following elements: an internal fixed matrix in the form of a semishell whose inner cavity contours the external semicylindrical surface of a tube to be notched (2), a clamp frame device for suitably clamping the tube (2) or two tubes simultaneously, at least one upper punch (3) whose extremity (4) has a shape corresponding to the shape of a notch (5) to be produced, a mandrel (6) which is introduced into the tube to be notched in such a way that it can form in the inner cavity thereof a volume or volumes for material expansion resulting from stamping.

Description

PRESSE POUR LE CRANTAGE D'UN TUBE COMPORTANT UN MANDRIN ET UN POINÇON PRESS FOR SCRAPING A TUBE COMPRISING A CHUCK AND A PUNCH
La présente invention concerne un outil et une machine pour le crantage d'un tube, notamment un tube d'armature d'appui-tête pour véhicule automobile. L'invention s'applique en particulier, mais non limitativement aux appuis-tête réglables en hauteur dont l'armature est composée de deux branches parallèles dont l'une au moins comporte une pluralité de crans chacun définissant une position de réglage de l'appui-tête tout en remplissant l'une des fonctions suivantes : antiéjection en position levée-maximum, réglage en cours de course, retenue basse maximum.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.
Différents profils de tels crans sont schématisés en figure 1 et l'un des crans d'extrémité, à profil orthogonal, est dessiné en détail en figure 2.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.
Pour le maintien de l'appui-tête, ces crans coopèrent avec des loquets intégrés dans des douilles de guidage prévues en haut du dossier du siège. Sur des tiges métalliques pleines ces crans sont facilement réalisés quel que soit leur profil par exemple par usinage, ou par déformation à froid (estampage).To maintain the headrest, these notches cooperate with latches integrated in guide sockets provided at the top of the seat back. On solid metal rods these notches are easily produced whatever their profile, for example by machining, or by cold deformation (stamping).
Par souci d'allégement et comme pour de nombreux composants intégrés dans l'automobile, les armatures d'appui-tête passent progressivement d'une exécution en tige ou fil vers une exécution en tube pour laquelle se posent des problèmes de réalisation des crans.For the sake of lightening and as for many components integrated in the automobile, 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.
Le procédé d'usinage des crans reste applicable aux tubes par fraisage ou brochage si l'épaisseur du tube le permet et si l'affaiblissement de section confère au produit une rigidité et une résistance conformes aux exigences de rigidité.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.
L'inconvénient majeur de ce procédé est par conséquent d'être limité à certains dimensionnements de tubes.The major drawback of this process is therefore to be limited to certain tube sizes.
Par ailleurs pour appliquer aux tubes le procédé d'estampage, il faut résoudre plusieurs problèmes à savoir : limiter l'effondrement de la paroi du tube estampé afin de conserver une arrête fonctionnelle efficace entre le flanc souvent vertical du cran et la génératrice du tube, fair-e_en-sαrte_.queJe-méiaLdéplacé_n'augmente- pas Je. diamètre externe- du tube et contribue le plus possible à la rigidité de la zone travaillée.Furthermore, in order to apply the stamping method to the tubes, several problems must be resolved, namely: limiting the collapse of the wall of the stamped tube in order to maintain an effective functional stop between the often vertical flank of the notch and the generatrix of the tube, fair-e_en-sαrte_.que Je méiaLdéplacé_n'aulait- pas Je. external diameter of the tube and contributes as much as possible to the rigidity of the area being worked.
Une solution par emboutissage du tube est proposée dans le document DEA solution by drawing the tube is proposed in the document DE
29714315 et elle consiste à introduire un manchon dans la zone du tube où les crans doivent être formés, pour faciliter la formation des crans, mais ce manchon ne constitue pas un outil mais un insert résidant dans la pièce. Une autre solution décrite dans le document EP 97 4409 permet de réaliser un cran par martelage mais le temps d'opération est relativement long et la machine de mise en œuvre est compliquée et chère.29714315 and it consists in introducing a sleeve into the zone of the tube where the notches must be formed, to facilitate the formation of the notches, but this sleeve does not constitute a tool but an insert residing in the part. Another solution described in document EP 97 4409 makes it possible to achieve a notch by hammering but the operating time is relatively long and the implementation machine is complicated and expensive.
L'invention vise à pallier les inconvénients précités et à proposer une machine apte à réaliser plusieurs crans simultanément dans la paroi d'un tube, sans restriction de forme.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.
Plus particulièrement l'invention propose un outil de crantage d'un tube, notamment mais non limitativement pour le crantage d'un ou de deux tubes d'une armature d'appui tête pour véhicule automobile, caractérisé en ce qu'il comporte les éléments suivants : - une matrice inférieure fixe et en forme de demi coquille dont la cavité interne est apte à épouser la forme extérieure demi cylindrique d'un tube à cranter,More particularly, 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,
- un dispositif serre flan, pour assurer un bridage approprié d'un tube ou deux tubes simultanément,- a blank holder device, to ensure appropriate clamping of a tube or two tubes simultaneously,
- au moins un poinçon supérieur dont l'extrémité est conformée selon une forme complémentaire inverse de celle d'un des crans à réaliser,- at least one upper punch, the end of which is shaped in a shape complementary to that of one of the notches to be produced,
- un mandrin apte à être introduit à l'intérieur du tube à cranter et apte à réserver dans la cavité interne du tube, un ou des volumes, pour l'expansion de matière résultant de l'estampage.- 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.
On comprendra mieux l'invention à l'aide de la description faite en référence aux figures suivantes : figure 1 : représentation schématique d'une branche d'armature d'appui tête comportant une série de crans de différents profils, figure 2 : cran d'extrémité à profil orthogonal, figure 3 : schéma de principe de la partie innovante d'une machine selon l'invention, figure 4 : section verticale selon AA de la figure 3. Une machine selon l'invention est constituée essentiellement d'une presse sur laquelle est montée au moins un outil de crantage (1) spécifique à l'invention et qui comporte les éléments suivants : - une matrice inférieur fixe non représentée et en forme de demi coquille donHa- cavité- interne-est -apte -à-épouser- la-forme extérieure-demi cylindrique d'un tube à cranter (2), un dispositif serre flan du type à ressort ou à actionnement par vérins séparés, pour assurer un bridage approprié d'un tube (2) ou deux tubes simultanément, au moins un poinçon supérieur (3) mobile dont l'extrémité est conformée selon une forme complémentaire (4) inverse de celle d'un des crans (5) à réaliser, et apte à se déplacer perpendiculairement à l'axe longitudinal du tube, un mandrin (6) apte à être introduit à l'intérieur du tube à cranter et dont la section à été prévue pour résoudre les problèmes d'exécution tels qu'il sera expliqué plus loin.The invention will be better understood using the description made with reference to the following figures: 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 according to the invention 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.
Si la machine est destinée au crantage d'armatures en forme de U à deux branches parallèles, elle peut comporter deux outils de crantage (1) tels que décrits ci-dessus.If the machine is intended for notching U-shaped reinforcements with two parallel branches, it may include two notching tools (1) as described above.
De même chaque outil de crantage peut également être prévu pour comporter plusieurs poinçons supérieurs (3) alignés, chacun destiné à la réalisation d'un des crans d'une même branche (2) de l'armature, et actionnés simultanément lors d'une même opération d'estampage.Similarly, 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.
On se rapporte à présent à la figure 4 montrant la section appropriée d'un mandrin selon l'invention. Le problème à résoudre lors de l'exécution d'un cran par estampage avec un mandrin remplissant totalement la cavité d'un tube résulte du déplacement d'un volume de métal provoquant : un allongement du tube (2) concerné, car l'effort de bridage exercé par le serre flan est calculé de façon à s'opposer à tout gonflement diamétral dudit tube, une contrainte élevée appliquée au mandrin du fait des efforts de pliage du métal.Referring now to Figure 4 showing the appropriate section of a mandrel according to the invention. The problem to be solved during the execution of a notch by stamping with a mandrel completely filling the cavity of a tube results from the displacement of a volume of metal causing: an elongation of the tube (2) concerned, because the effort of clamping exerted by the blank holder is calculated so as to oppose any diametrical swelling of said tube, a high stress applied to the mandrel due to the bending forces of the metal.
Afin d'éviter ces inconvénients l'invention prévoit d'utiliser un mandrin dont la section ne remplit pas la totalité de la cavité interne du tube, de façon à réserver un ou des volumes pour l'expansion de matière, et à pouvoir être extrait du tube après l'estampage.In order to avoid these drawbacks, 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.
Au niveau de la zone à estamper, le mandrin cylindrique comporte une zone modifiée : la section du mandrin (6) présente nécessairement d'une part une zone plane (7) selon un plan parallèle à la direction longitudinale (10) du mandrin et faisant fonction d'enclume lors de l'estampage, et d'autre part deux flans latéraux (8,9) -par-exemple- (mais non-obligatoirement)-disposés symétriquement par rapport au plan médian (11) vertical du mandrin de façon à dégager de chaque côté du mandrin un volume d'expansion (12, 13).At the level of the area to be stamped, 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).
Préférentiellement, mais non limitativement, les deux flans sont plans et déterminent entre eux un angle prédéterminé (α). La largeur (d) de l'enclume et l'angle prédéterminée (α) sont calculés en fonction des dimensionnements du tube et du cran à obtenir tout en garantissant la rigidité et la sécurité souhaitées.Preferably, but not limited to, the two blanks are planar and determine between them a predetermined angle (α). The width (d) of the anvil and the predetermined angle (α) 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 titre d'exemple pour un tube de diamètre extérieur 12 mm et d'épaisseur 2 mm, le mandrin présente un diamètre externe de 7,9 mm dans ces parties cylindriques, et dans les parties actives une enclume de largeur (d) = 3 mm pour un angle (α) de 60°.For example, for a tube with an outside diameter of 12 mm and a thickness of 2 mm, the mandrel has an external diameter of 7.9 mm in these cylindrical parts, and in the active parts an anvil of width (d) = 3 mm for an angle (α) of 60 °.
En outre, une machine selon l'invention est une presse comportant au moins un outil de crantage et des moyens pour déplacer et positionner un mandrin dans un tube à cranter, selon son axe longitudinal, dans un sens ou dans l'autre. In addition, 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.

Claims

REVENDICATIONS
1. Outil de crantage (1) d'un tube (2), notamment mais non limitativement pour le crantage d'un ou de deux tubes d'une armature d'appui tête pour véhicule automobile, caractérisé en ce qu'il comporte les éléments suivants :1. Notching tool (1) of a tube (2), 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 following items:
- une matrice inférieure fixe et en forme de demi coquille dont la cavité interne est apte à épouser la forme extérieure demi cylindrique d'un tube à cranter (2), - un dispositif serre flan, pour assurer un bridage approprié d'un tube (2) ou deux tubes simultanément,- 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 (2), - a blank clamp device, to ensure appropriate clamping of a tube ( 2) or two tubes simultaneously,
- au moins un poinçon supérieur (3) dont l'extrémité est conformée selon une forme complémentaire (4) inverse de celle d'un des crans (5) à réaliser, - un mandrin (6) apte à être introduit à l'intérieur du tube à cranter et apte à réserver dans la cavité interne du tube, un ou des volumes, pour l'expansion de matière résultant de l'estampage.- at least one upper punch (3) whose end is shaped according to a complementary shape (4) opposite to that of one of the notches (5) to be produced, - a mandrel (6) able to be inserted inside of the notched tube and able to reserve in the internal cavity of the tube, one or more volumes, for the expansion of material resulting from the stamping.
2. Outil de crantage selon la revendication 1 , caractérisé en ce que le mandrin cylindrique comporte une zone modifiée et présentant d'une part une zone plane (7) selon un plan parallèle à la direction longitudinale^ 0) du mandrin et faisant fonction d'enclume lors de l'estampage, et d'autre part deux flans latéraux (8,9), de façon à dégager de chaque côté du mandrin un volume d'expansion (12, 13).2. notching tool according to claim 1, characterized in that the cylindrical mandrel comprises a modified zone and having on the one hand a planar zone (7) along a plane parallel to the longitudinal direction ^ 0) of the mandrel and acting as a 'anvil during stamping, and on the other hand two side blanks (8,9), so as to release on each side of the mandrel an expansion volume (12, 13).
3. Outil de crantage selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif serre flan est du type à ressort ou à actionnement par vérins séparés.3. Locking tool according to one of claims 1 to 4, characterized in that the blank holder device is of the spring type or actuated by separate cylinders.
4. Outil de crantage selon l'une des revendications 2 à 3, caractérisé en ce que les deux flans sont plans et déterminent entre eux un angle prédéterminé (α). 4. Locking tool according to one of claims 2 to 3, characterized in that the two blanks are planar and determine between them a predetermined angle (α).
5. Machine de crantage (1) d'un tube (2), notamment mais non limitativement pourle crantage-d^n-ou-de-deux tubes-cTune-armature d'appui tête pour véhicule automobile caractérisé en ce qu'elle est constituée d'une presse comportant au moins un outil selon l'une des revendications 1 à 4 pour réaliser les crans par estampage. 5. Notching machine (1) of a tube (2), in particular but not limitatively pourle notching -d ^ n-or-of-two tubes-cTune-head support frame for motor vehicle characterized in that it consists of a press comprising at least one tool according to one of claims 1 to 4 for producing the notches by stamping.
PCT/FR2003/002187 2002-07-29 2003-07-11 Press for tube notching provided with a mandrel which is arranged inside said tube and a piece corresponding to produced notch WO2004016367A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2003264713A AU2003264713A1 (en) 2002-07-29 2003-07-11 Press for tube notching provided with a mandrel which is arranged inside said tube and a piece corresponding to produced notch
DE60307484T DE60307484T2 (en) 2002-07-29 2003-07-11 PRESSING FOR THE PRODUCTION OF BARRIER NUTS IN TUBES WITH A THREAD ARRANGED IN THE TUBE AND ONE OF THE MANUFACTURED NUT CORRESPONDING PART
EP03787849A EP1539393B1 (en) 2002-07-29 2003-07-11 Press for tube notching provided with a mandrel which is arranged inside said tube and a piece corresponding to produced notch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR02/09637 2002-07-29
FR0209637A FR2842752B1 (en) 2002-07-29 2002-07-29 PRESS FOR THE CRANTAGE OF A TUBE COMPRISING IN COMBINATION A CHUCK INTRODUCED INSIDE THE TUBE AND A PIECE CONFORMED ACCORDING TO THE CRAN TO BE MADE.

Publications (1)

Publication Number Publication Date
WO2004016367A1 true WO2004016367A1 (en) 2004-02-26

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PCT/FR2003/002187 WO2004016367A1 (en) 2002-07-29 2003-07-11 Press for tube notching provided with a mandrel which is arranged inside said tube and a piece corresponding to produced notch

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005027584A1 (en) * 2005-06-14 2006-12-28 Ulrich Huperz Schweißtechnik GmbH & Co.KG Tool for swarf-free production of workpiece produces workpiece with groove extending at least from top to bottom of workpiece
DE102007033604B3 (en) 2007-07-17 2009-01-22 Muhr Und Bender Kg Head rest carrying element
RU2481169C2 (en) * 2011-07-21 2013-05-10 Открытое акционерное общество "Новосибирский завод химконцентратов" Automatic moulding machine for forming ledges in tubular billet
FR2991893B1 (en) 2012-06-15 2015-01-02 Numalliance TUBE CRUNCHING METHOD AND ASSOCIATED CRYSTATING MACHINE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58218339A (en) * 1982-06-11 1983-12-19 Daido Steel Co Ltd Steering rod for vehicle and its manufacture
US5722281A (en) * 1994-12-27 1998-03-03 Showa Corporation Apparatus for manufacturing an automotive steering rack
EP1112791A2 (en) * 1999-12-27 2001-07-04 Neturen Co., Ltd. Method and apparatus for production of hollowed rack bars
FR2805481A1 (en) * 2000-02-29 2001-08-31 Aisin Seiki SUPPORT BAR

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58218339A (en) * 1982-06-11 1983-12-19 Daido Steel Co Ltd Steering rod for vehicle and its manufacture
US5722281A (en) * 1994-12-27 1998-03-03 Showa Corporation Apparatus for manufacturing an automotive steering rack
EP1112791A2 (en) * 1999-12-27 2001-07-04 Neturen Co., Ltd. Method and apparatus for production of hollowed rack bars
FR2805481A1 (en) * 2000-02-29 2001-08-31 Aisin Seiki SUPPORT BAR

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 073 (M - 287) 5 April 1984 (1984-04-05) *

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FR2842752A1 (en) 2004-01-30
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ATE335557T1 (en) 2006-09-15
EP1539393B1 (en) 2006-08-09
EP1539393A1 (en) 2005-06-15
DE60307484T2 (en) 2007-03-29
FR2842752B1 (en) 2005-02-11
AU2003264713A1 (en) 2004-03-03

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