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WO2016091530A1 - Procédé pour la fabrication de tuyaux - Google Patents

Procédé pour la fabrication de tuyaux Download PDF

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Publication number
WO2016091530A1
WO2016091530A1 PCT/EP2015/076474 EP2015076474W WO2016091530A1 WO 2016091530 A1 WO2016091530 A1 WO 2016091530A1 EP 2015076474 W EP2015076474 W EP 2015076474W WO 2016091530 A1 WO2016091530 A1 WO 2016091530A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal plate
actuators
shaped
sheet metal
height
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.)
Ceased
Application number
PCT/EP2015/076474
Other languages
German (de)
English (en)
Inventor
Frank BLÖMKE
Klaus Schürmann
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.)
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Original Assignee
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
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 Siempelkamp Maschinen und Anlagenbau GmbH and Co KG filed Critical Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Publication of WO2016091530A1 publication Critical patent/WO2016091530A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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

Definitions

  • the invention relates to a method for producing pipes, wherein a flat or at least one edge bent sheet metal plate undergoes at least two forming processes, of which in the first forming process, the sheet metal plate is deformed in a U-press U-shaped by a punch the metal plate in depresses a central area while surrounding
  • the longitudinal edges of the sheets are often first prepared for the subsequent process.
  • the longitudinal edges of the sheets are often first prepared for the subsequent process.
  • the longitudinal edges of the sheets are often first prepared for the subsequent process.
  • the U-shaped bent sheet metal is to be transported by the U-press in the longitudinal direction of the sheet in the O-press.
  • today's forming process into a U-shaped profile is unsatisfactory.
  • the sheet metal is still pressed centrally by a punch over its entire length today, while it is supported laterally. Even at maximum deformation pressure by simultaneously or subsequently acting lateral actuators, ie with a force in which the legs of the U-shaped sheet metal plate just do not buckle above the punch, but the sheet springs back on the parallel position of the legs.
  • the legs are V-shaped and the opening dimension of the U-shaped profile is too large for the diameter of the semi-circular upper tool of the O-press.
  • D. h. The U-shaped profile of the metal plate is not to be transported in its longitudinal direction in the open O-press, when the legs of the U-shaped preformed metal plate are not at least parallel. As soon as the opening area of the legs opens in a V-shape, it is too wide to accommodate the
  • Method is particularly complex, because on the forcibly engagable guide rollers must also be applied in addition to a large force on the legs of the U-shaped profile.
  • the transport routes between the two presses are so very complicated and expensive.
  • the object of the invention is therefore to improve the U-deformation of the metal plate. It is also the object of the invention to facilitate the transition from U to O deformation. With regard to the method, the object is achieved in that the
  • the pressing operations of the actuators can be carried out so that the legs of the profile of the sheet metal plate emerging from the U-press are in the desired parallelism ( ⁇ 2.5 °).
  • the plastic deformation of the metal plate is by at least a second pressing operation
  • the actuators much safer to achieve.
  • the profiles are much easier to insert in the longitudinal direction in the O-press.
  • the actuators and the U-shaped deformed sheet metal plate are offset relative to each other in height between the at least two pressing operations of the actuators.
  • the U-shaped deformed metal plate is supported at its web after the first forming process by a height-adjustable support.
  • a height-adjustable support is suitable to keep the metal plate in a defined position during the pressing operation of the actuators. In this case, the backup of the situation can be improved by the punch as an anvil again. In any case, however, it is possible to determine the height at which the actuators act on the legs of the metal sheet for shaping.
  • Support is supported.
  • the U-shaped metal plate is supported with its web on the support and can be adjusted in height in such a way that a pre-determined and / or precalculated optimum height for the initiation of the forces can be adjusted and adjusted by the actuator.
  • the pressing surface is defined by the peripheral surface of a
  • the punch remains within the U-shaped contour of the sheet metal plate and serves as an abutment surface for the legs in one region.
  • the upper edges of the sheet metal plate can be moved closer to each other because of the missing punch.
  • a substantially parallel position of the legs can be achieved.
  • auxiliary actuators are used offset in height to the actuators.
  • the actuators themselves can bend the metal plate around a convex outer contour of the punch around.
  • the number or intensity of the pressing operations of the actuators preferably takes place as a function of the thickness and / or the material of the sheet metal plate.
  • Figure 1 is a schematic, partially sectioned view of a
  • Method, Figure 2a to 2f is a schematic sequence in a stepwise
  • the device shown in Fig. 1, also referred to as U-press 100, is intended for the bending of rectangular in plan sheet metal plates 1. These may have bent longitudinal edges 2.
  • a metal plate 1 has been indicated.
  • the bending process makes of such a sheet metal blank 1 a preform having a substantially U-shaped cross-section, as required for the manufacture of large pipes.
  • sheet metal plates 1 of relatively thick sheets, so that high deformation forces and reaction forces are to be absorbed.
  • the desire is that even thinner sheets of higher quality, which often expand after compression, springing back to form a U-profile with parallel legs ( ⁇ 2.5 °), so that the profile in
  • the device in Figure 1 consists of a
  • punch 4 Vertical bending beam
  • actuators 5 Interposition of the sheet metal blank 1 to be formed in a horizontal plane against each other working Horizontal bending beam, hereinafter called actuators 5, 6.
  • the stamp and the actuators can in the context of the invention also consist of several individual elements, for. B. a series of punches or a number of individual actuators. For some method steps, it may also be useful, not shown further
  • auxiliary actuators in another
  • Auxiliary actuators can communicate with each other via gears or joints.
  • the stamp has as a vertical bending beam at least two drives 7, 8, one at each end. This is indicated in the figure 1 only by the double numbering, because the drives are in the blade depth
  • drives in series connected single stamps possible.
  • the drives are formed in this embodiment by cylinder-piston assemblies.
  • electrical or spindle drives here.
  • the actuators have actuators 9, 10, 11, 12, which are typically implemented by cylinder-piston assemblies. All drives are controlled by a common, not shown control. They act as indicated by the double arrows in two directions.
  • the stamp 4 presses in the production process, the metal plate 1 centrally downwards and thereby forms a web of the future U-profile.
  • the sides of the metal plate 1 rest on carriers 17, 18, which are also formed by the actuators 5, 6 in this embodiment.
  • the actuators each have a pressing surface 15, 16, which in the exemplary embodiment according to FIG. 1 corresponds to a circumferential surface of a rotational body, in this case a rotatable roller.
  • the web is formed by "dipping" the stamp 4 into the sheet-metal plate 1. It can rest on a support 22 during the pressing operation of the stamp 4 or following the pressing of the stamp 4.
  • This support 22 is designed such that it with a
  • This height adjustment 23 is coupled. This height adjustment 23 includes a
  • the stroke of the support 22 may extend so far down that the punch 4 can be completely lifted out of the interior of the U-shaped sheet metal plate 1. To the top, the stroke should extend so far that a finished U-shaped sheet metal plate 1 in the
  • sequence of figures 2a to 2f explains in chronological order the method according to the invention in a first example.
  • sequence of figures 3a to 3f shows the inventive method in a second example. All figures of the two sequences are taken from a mathematical calculation model that can represent the exact bend of the sheet metal plate, and are except for the
  • Figure 2a shows only a metal plate 1 with slightly bent edges 2. This metal plate lies on supports 17, 18, which occupy the function of the actuators 5, 6 later. Above the stamp 4 starts with the
  • Stamp head 13 to press on the metal plate.
  • the force is initiated by the drives 7, 8, not shown on the punch neck.
  • Figure 2b shows a later stage.
  • the metal plate is U-shaped deformed and is now supported by the web 19 on the support 22 from.
  • the legs 20, 21 are compressed via the actuators. The indicated
  • height-adjustable support can be lifted up to the side
  • the height-adjustable support 22 is namely lowered, while the punch 4 and also the actuators maintain their position.
  • a relative height offset between the sheet metal plate and actuators occurs between the first and the subsequent second pressing operation of the actuators.
  • the actuators and the auxiliary actuators become the legs
  • the relative height offset between the metal plate and actuators is deposited in dependence on the plate thickness and their material in a controller, not shown, and preferably approached automatically. Decisive for a better deformability is therefore in both
  • Pressing process is initiated. It is particularly advantageous if the actuators at the two pressing operations at different

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

L'invention concerne un procédé pour la fabrication de tuyaux, une plaque en tôle (1) plate ou pliée en au moins un bord (2) traversant au moins deux procédés de formage, la plaque en tôle (1) étant déformée dans le premier procédé de formage dans une presse en U (100) en forme de U en ce qu'un poinçon (4) enfonce la plaque en tôle (1) dans une zone centrale alors que les zones environnantes se trouvent au moins partiellement sur au moins un support (5, 6) et les branches de la plaque en tôle déformée en forme de U étant pressées l'une vers l'autre via des actionneurs latéraux (5, 6) à l'aide à chaque fois d'au moins une surface de pressage (15,16) et, dans le deuxième procédé de formage, la plaque en tôle (1) déformée en forme de U étant transformée dans une presse en O à l'aide d'outils en forme de demi-coquille se déplaçant l'un vers l'autre en une forme tubulaire. Pour améliorer la déformation en U de la plaque en tôle, selon l'invention, les actionneurs (5, 6) pressent les branches (20,21) de la plaque en tôle déformée en forme de U (1) l'une vers l'autre dans au moins un premier et un deuxième processus de pressage, qui se déroulent consécutivement dans le temps.
PCT/EP2015/076474 2014-12-11 2015-11-12 Procédé pour la fabrication de tuyaux Ceased WO2016091530A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014018543.5 2014-12-11
DE102014018543.5A DE102014018543B4 (de) 2014-12-12 2014-12-12 Verfahren zur Herstellung von Rohren

Publications (1)

Publication Number Publication Date
WO2016091530A1 true WO2016091530A1 (fr) 2016-06-16

Family

ID=54540110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/076474 Ceased WO2016091530A1 (fr) 2014-12-11 2015-11-12 Procédé pour la fabrication de tuyaux

Country Status (2)

Country Link
DE (1) DE102014018543B4 (fr)
WO (1) WO2016091530A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7575828B1 (ja) * 2024-05-22 2024-10-30 株式会社富士機械工作所 管体成形装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5462161A (en) * 1977-10-27 1979-05-18 Kobe Steel Ltd Forming method for pipe
JPS5650722A (en) * 1979-10-03 1981-05-08 Nippon Kokan Kk <Nkk> U pressing method in steel pipe production by u.o.e. system
EP1698407A1 (fr) * 2003-12-25 2006-09-06 Sumitomo Metal Industries, Ltd. Procede et dispositif de fabrication de tube en acier uoe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721610B1 (de) * 1977-05-13 1978-07-06 Eugen Siempelkamp Presse zum Vorbiegen von Blechzuschnitten bei der Herstellung von Grossrohren
EP2176880A1 (fr) 2007-07-20 2010-04-21 Imec Contacts damasquinés sur des dispositifs cmos iii-v

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5462161A (en) * 1977-10-27 1979-05-18 Kobe Steel Ltd Forming method for pipe
JPS5650722A (en) * 1979-10-03 1981-05-08 Nippon Kokan Kk <Nkk> U pressing method in steel pipe production by u.o.e. system
EP1698407A1 (fr) * 2003-12-25 2006-09-06 Sumitomo Metal Industries, Ltd. Procede et dispositif de fabrication de tube en acier uoe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7575828B1 (ja) * 2024-05-22 2024-10-30 株式会社富士機械工作所 管体成形装置

Also Published As

Publication number Publication date
DE102014018543B4 (de) 2024-05-08
DE102014018543A1 (de) 2016-06-16

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