EP0334294A2 - Procédé de fabrication de coquilles monopièces courbées en arc - Google Patents

Procédé de fabrication de coquilles monopièces courbées en arc Download PDF

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Publication number
EP0334294A2
EP0334294A2 EP89105046A EP89105046A EP0334294A2 EP 0334294 A2 EP0334294 A2 EP 0334294A2 EP 89105046 A EP89105046 A EP 89105046A EP 89105046 A EP89105046 A EP 89105046A EP 0334294 A2 EP0334294 A2 EP 0334294A2
Authority
EP
European Patent Office
Prior art keywords
mandrel
tubular body
roller
curvature
sliding guide
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.)
Withdrawn
Application number
EP89105046A
Other languages
German (de)
English (en)
Other versions
EP0334294A3 (fr
Inventor
Egon Evertz
Rolf Prof. Dr. Ing. Seybold
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0334294A2 publication Critical patent/EP0334294A2/fr
Publication of EP0334294A3 publication Critical patent/EP0334294A3/fr
Withdrawn legal-status Critical Current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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/12—Bending tubes using mandrels or the like by pushing over a curved mandrel; by pushing through a curved die

Definitions

  • the invention relates to a process for the production of arcuately curved, one-piece molds, in particular made of copper, for continuous casting, a tubular body having a substantially rectangular cross section being bent by introducing a curved mandrel which defines the arc shape of the mold and cold forming on the mandrel .
  • Such a method is carried out according to DE-OS 18 09 633 in such a way that the curved mandrel is first pressed into the tubular body, and that the cold forming is then carried out on the mandrel.
  • the tubular body thus initially assumes an approximate shape of the mandrel which, in the course of the subsequent cold forming, continues to transfer its shape and dimension to the tubular body.
  • the object of the invention is to improve the dimensional stability of the mold to be produced from the tubular body.
  • the invention is based on a tubular body with a rectangular cross section.
  • the mold is already finished according to the invention when the entire length of the tubular body is pushed onto the mandrel or when the latter is pushed into it.
  • the mandrel to be inserted transfers its dimensions and shape in its entirety from the outset to the tubular body, which, particularly on the inner curvature side, cannot stand out from the mandrel because of the compression that would otherwise occur there.
  • the forming conditions of the tubular body are therefore constant over its entire length, which leads to a considerably improved dimensional stability of the mold over its entire length.
  • An axial length that is at least equal to the width of the adjacent side of a tubular body is required for the roll.
  • the diameter of the roller should be as large as possible to ensure even pressure on the inner curve side. In the case of a plurality of rollers, as are expedient in the case of a greater curvature, the roller diameter, however, needs to be optimized so that there is sufficient space on the inner curve side for the intended number of rollers.
  • the tubular body is pushed onto the fixed mandrel, a thrust member acting on the free end of the tubular body and accordingly being able to perform a linear movement.
  • the mandrel, the sliding guide and the position of the rollers can be arranged in a fixed position.
  • the tubular body As soon as the tubular body has assumed the arcuate curvature provided, it can continue to be pushed onto the mandrel without deformation. It is therefore sufficient if the tubular body is subjected to the sliding guide approximately to the middle. In the case of shorter tubular bodies and less curvature, a roller in the middle pressing on the inner curvature side is sufficient, while in the case of longer tubular bodies and greater curvature one or more rollers advantageously also take over the pressure.
  • a further improvement in dimensional accuracy is achieved by supporting the side surfaces of the tubular body in the vicinity of the inner curvature side. This purpose is served by rollers of smaller diameter, which act on the side surfaces in the same area as the roller lying on the inner curvature side. In this way, the tendency of the tubular body to widen when bending on the inner curve side is countered from the outset.
  • the drawing shows the tubular body 1, which is under the action of a thrust device acting on its free end 2, by which it is acted upon in the direction of the arrows 3.
  • the arcuate curved mandrel 4 is arranged in a stationary manner.
  • the force 3 acting on the outside of the curvature of the tubular body 1 is intercepted in this way.
  • rollers 9 and 10 which bear against the inner curvature side 8 and which are also mounted in a stationary manner.
  • the rollers press the inside of the curvature against the mandrel 4, so that dimensional deviations are excluded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Continuous Casting (AREA)
EP19890105046 1988-03-24 1989-03-21 Procédé de fabrication de coquilles monopièces courbées en arc Withdrawn EP0334294A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883809936 DE3809936C2 (de) 1988-03-24 1988-03-24 Verfahren zur Herstellung von bogenförmig gekrümmten, einteiligen Kokillen
DE3809936 1988-03-24

Publications (2)

Publication Number Publication Date
EP0334294A2 true EP0334294A2 (fr) 1989-09-27
EP0334294A3 EP0334294A3 (fr) 1990-10-31

Family

ID=6350579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890105046 Withdrawn EP0334294A3 (fr) 1988-03-24 1989-03-21 Procédé de fabrication de coquilles monopièces courbées en arc

Country Status (2)

Country Link
EP (1) EP0334294A3 (fr)
DE (1) DE3809936C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2705595A1 (fr) * 1993-05-25 1994-12-02 Hutchinson Dispositif, procédé de galbage de coulisses, et coulisse obtenue par ledit procédé.
CN105127259A (zh) * 2015-09-29 2015-12-09 西安优耐特容器制造有限公司 一种薄壁弯头的推制成型方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19750858B4 (de) * 1997-11-17 2008-02-28 Egon Evertz Kg Verfahren zum Herstellen einer Stranggießkokille

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE445075C (de) * 1926-02-09 1927-06-03 Rohrbogenwerk G M B H Vorrichtung zur Herstellung von Rohrbogen, Rohrschlangen usw
DE570251C (de) * 1931-05-10 1933-02-13 Rohrbogenwerk G M B H Herstellung von Rohrbogen o. dgl. mittels Biegeform, Biegerollen, Walzenbiegewerke o. dgl.
US2221417A (en) * 1938-11-18 1940-11-12 Taylor James Hall Means for finishing bends
DE1809653A1 (de) * 1968-11-19 1970-06-04 Jaeger Kg Frank Lueftungsvorrichtung zum Einbau in einen Lueftungsspalt,insbesondere ueber einem Fenster oder einer Fensterscheibe
DE2555903A1 (de) * 1975-12-12 1977-06-23 Moeller Sidro Fab Vorrichtung zum biegen von rohren zu rohrboegen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2705595A1 (fr) * 1993-05-25 1994-12-02 Hutchinson Dispositif, procédé de galbage de coulisses, et coulisse obtenue par ledit procédé.
CN105127259A (zh) * 2015-09-29 2015-12-09 西安优耐特容器制造有限公司 一种薄壁弯头的推制成型方法

Also Published As

Publication number Publication date
DE3809936A1 (de) 1989-10-05
EP0334294A3 (fr) 1990-10-31
DE3809936C2 (de) 2002-11-21

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