EP1048798B1 - Procédé de fabrication de fers à béton à filet extérieur - Google Patents

Procédé de fabrication de fers à béton à filet extérieur Download PDF

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Publication number
EP1048798B1
EP1048798B1 EP99810658A EP99810658A EP1048798B1 EP 1048798 B1 EP1048798 B1 EP 1048798B1 EP 99810658 A EP99810658 A EP 99810658A EP 99810658 A EP99810658 A EP 99810658A EP 1048798 B1 EP1048798 B1 EP 1048798B1
Authority
EP
European Patent Office
Prior art keywords
bar
thread
end region
reinforcing bar
diameter
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.)
Expired - Lifetime
Application number
EP99810658A
Other languages
German (de)
English (en)
Other versions
EP1048798A1 (fr
Inventor
Kurt Blum
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.)
Ancotech AG
Original Assignee
Ancotech 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 Ancotech AG filed Critical Ancotech AG
Publication of EP1048798A1 publication Critical patent/EP1048798A1/fr
Application granted granted Critical
Publication of EP1048798B1 publication Critical patent/EP1048798B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E04C5/165—Coaxial connection by means of sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F5/00—Upsetting wire or pressing operations affecting the wire cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling

Definitions

  • the present invention relates to a method for Making one with at least one end with an external thread, ribbed reinforcing bar.
  • the object of the present invention is to create of a method of making one with one at least one end with a cut external thread provided, ribbed reinforcing bar, which does not have this disadvantage, that is, which one the end area of the reinforcing bar to be provided with the thread over its entire cross-section relatively simple way before the external thread is formed a greatly increased strength is given, and its formation of the external thread with the self threading devices commonly used on a construction site on simple and extremely cheap Is feasible without insufficient strength to get on the final product.
  • FIGS. 1, 2, 3a and 3b is made according to this embodiment one with a conical at least one end External thread, ribbed reinforcing bar a commercial ribbed reinforcing bar (see Fig. 1) used as the starting product.
  • the grooves 6 according to Figures 6 and 7 in the longitudinal direction of the reinforcing bar 1 extending, made of high strength material as the reinforcing bar 1 existing bar elements 8 in the end area to be provided with the external thread 5 e of the reinforcing bar 1, and then to form an external thread 5 on the end region e. It is useful if the height h of the bar elements 8 is greater than the thread depth of the end area e to be molded thread 5. Also in this embodiment can the pressing of the ribs 4, the Production of the grooves 6 and the pressing of the rod elements 6, if desired, in a single operation be accomplished.
  • Figures 12 and 13 show a method similar to Method according to Figures 4 and 5, only with the difference to the latter procedure, that here two each other opposite, transverse to the longitudinal axis of the bar Ribs 6 'are pressed.
  • FIGS. 14 and 15 it is for alone or in combination with one or more the method according to Figures 1 to 13 (or the claims 1 to 7 and 9 to 15) also possible to achieve a material compression or increase in strength in the end region e of the reinforcing rod 1, one made of higher strength Material as the reinforcing bar 1 existing metal sleeve 9 over the one to be provided with the external thread 5 To push end region e, and this sleeve 9 afterwards, if necessary together with those in this end area e Reinforcing bar ribs 4, while maintaining or slight reduction in the original rod diameter d1 into the rod core material to be compressed 7 press in, and then on the work hardened End area e to form the external thread.
  • FIGS. 16 and 17 it is for alone or in combination with one or more the method according to Figures 1 to 13 (or the claims 1 to 7 and 9 to 15) also possible to achieve a material compression or increase in strength in the end area e while maintaining the original Rod diameter d1 a recess 10 in the end face 11 of the reinforcing bar 1, and then on the cold-hardened end area e Male thread molded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Forging (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (9)

  1. Procédé pour la fabrication d'une barre à béton nervurée munie d'un filet extérieur au moins à une extrémité, caractérisé en ce qu'on introduit les nervures (4) de la première citée dans la zone terminale (e) de la barre à béton (1) qui doit être munie du filet (5) en conservant le diamètre initial (d1) de la barre par pression dans la matière centrale de la barre (7) et on comprime ainsi cette matière dans cette zone, et on découpe ensuite le filet extérieur sur la zone (e) de la barre ainsi soumise à un écrouissage.
  2. Procédé pour la fabrication d'une barre à béton nervurée munie d'un filet extérieur au moins à une extrémité, caractérisé en ce qu'on introduit les nervures (4) de la première citée dans la zone terminale (e) de la barre à béton (1) qui doit être munie du filet (5) en réduisant le diamètre initial (d1) de la barre par pression dans la matière centrale de la barre (7) et on comprime ainsi cette matière dans cette zone, et on découpe ensuite le filet extérieur sur la zone (e) de la barre ainsi soumise à un écrouissage.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on prévoit un filet conique ou cylindrique (5).
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on comprime en outre la zone terminale de la barre à béton (1) qui doit être munie du filet extérieur (5) dans sa direction longitudinale en lui conférant une forme conique qui se rétrécit vers l'extérieur, de telle sorte que la conicité terminale de la zone terminale (e) ainsi façonnée, donne lieu, sur toute la longueur de cette dernière, à la formation d'un diamètre local qui est supérieur au diamètre interne local respectif du filet extérieur à découper par la suite sur cette zone terminale.
  5. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on introduit en outre par pression, avant la découpe du filet (5), dans la zone terminale (e) de la barre à béton (1) qui doit être munie du filet, tout en conservant ou en réduisant le diamètre initial (d1) de la barre, au moins une, de préférence plusieurs rainures (6) s'étendant dans la direction longitudinale de la barre (1) tout en étant réparties de manière régulière sur la périphérie de la barre.
  6. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on soumet en outre une section externe (e1) de la zone terminale (e) à une pression pour obtenir un diamètre (d2) inférieur au diamètre externe (d1) de la barre à béton (1), mais qui néanmoins ne dépasse nulle part vers le bas le diamètre interne du filet (5) qui doit être façonné par la suite.
  7. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on introduit en outre par pression, avant la découpe du filet (5), dans la zone terminale (e) de la barre à béton (1) qui doit être munie du filet, tout en conservant ou en réduisant le diamètre initial (d1) de la barre, au moins une, de préférence au moins deux rainures (6') opposées l'une à l'autre et s'étendant en direction transversale par rapport à l'axe longitudinal de la barre.
  8. Procédé selon la revendication 4, caractérisé en ce que, pour la formation des rainures (6), on introduit par pression au moins un élément de barre (8) s'étendant dans la direction longitudinale de la barre à béton (1), constitué de préférence d'une matière dont la haute résistance est supérieure à celle de la barre à béton (1), dans la zone terminale (e) de la barre à béton (1), qui doit être munie du filet (5).
  9. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'on introduit en outre par pression, avant la découpe du filet (5), dans la zone terminale (e) de la barre à béton (1) qui doit être munie du filet, tout en conservant ou en réduisant le diamètre initial (d1) de la barre, un renfoncement dans le côté frontal (11) de la barre à béton (1).
EP99810658A 1999-04-22 1999-07-21 Procédé de fabrication de fers à béton à filet extérieur Expired - Lifetime EP1048798B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH73999 1999-04-22
CH73999 1999-04-22

Publications (2)

Publication Number Publication Date
EP1048798A1 EP1048798A1 (fr) 2000-11-02
EP1048798B1 true EP1048798B1 (fr) 2001-10-24

Family

ID=4194085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810658A Expired - Lifetime EP1048798B1 (fr) 1999-04-22 1999-07-21 Procédé de fabrication de fers à béton à filet extérieur

Country Status (3)

Country Link
EP (1) EP1048798B1 (fr)
AT (1) ATE207566T1 (fr)
DE (1) DE59900345D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6880224B2 (en) * 2003-06-25 2005-04-19 Erico International Corporation Deformed reinforcing bar splice and method
GR1008149B (el) * 2012-10-10 2014-03-26 Αντωνιος Παναγιωτη Αναγνωστοπουλος Προϊον μεθοδος και συστημα τοποθετησης καλυπτρων σε μεταλλικα αποστατικα οπλισμου σκυροδεματος
CN107716789A (zh) * 2017-10-16 2018-02-23 杨秀敏 一种钢筋热镦粗牙螺纹成型方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162915B (en) * 1984-08-09 1988-06-02 Allied Steel Wire Ltd Reinforcing bar joints
GB2227802A (en) * 1989-01-26 1990-08-08 Square Grip Ltd Concrete reinforcement bar couplings and apparatus for enlarging bar ends
FR2653809B1 (fr) * 1989-10-26 1995-05-12 Techniport Sa Installation de realisation de ronds a beton.
GB2238499A (en) * 1989-11-09 1991-06-05 Hy Ten Reinforcement Company L Forming threaded bars
FR2689156B1 (fr) * 1992-03-30 1995-07-13 Techniport Sa Procede de realisation d'une liaison mecanique de ronds a beton, liaison obtenue par le procede, rond a beton autorisant la mise en óoeuvre du dit procede, et installation de preparation de ronds a beton.
FI922525A0 (fi) * 1992-06-01 1992-06-01 Tartuntamarkkinointi Oy Foerfarande foer skaerning av en gaenga i en staong.
US5776001A (en) * 1994-02-16 1998-07-07 Ccl Systems Limited Thread formation
KR100248963B1 (ko) * 1998-03-31 2000-03-15 정경옥 콘크리트 보강용 이형봉강의 연결부 구조와 그 연결부의 가공방법

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Publication number Publication date
EP1048798A1 (fr) 2000-11-02
DE59900345D1 (de) 2001-11-29
ATE207566T1 (de) 2001-11-15

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