WO2000001500A1 - Procede et dispositif pour la fabrication de pieces a l'aide de la technique de formage par haute pression interne - Google Patents

Procede et dispositif pour la fabrication de pieces a l'aide de la technique de formage par haute pression interne Download PDF

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Publication number
WO2000001500A1
WO2000001500A1 PCT/EP1999/004541 EP9904541W WO0001500A1 WO 2000001500 A1 WO2000001500 A1 WO 2000001500A1 EP 9904541 W EP9904541 W EP 9904541W WO 0001500 A1 WO0001500 A1 WO 0001500A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
cross
final shape
brought
final
Prior art date
Application number
PCT/EP1999/004541
Other languages
German (de)
English (en)
Inventor
Carsten Binder
Markus Binder
Original Assignee
Carsten Binder
Markus Binder
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 Carsten Binder, Markus Binder filed Critical Carsten Binder
Priority to AU49037/99A priority Critical patent/AU4903799A/en
Publication of WO2000001500A1 publication Critical patent/WO2000001500A1/fr

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
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies

Definitions

  • the invention relates to a method for the production of parts with the aid of internal high-pressure forming technology, in which several molding work stages are carried out in at least one molding tool, with the starting point being rolled, drawn or welded tubes with tube cross-sections of any shape.
  • the internal high-pressure forming technology (IHU), which has been known for a long time, has been developed in the recent past to such an extent that it is of great importance in manufacturing technology, particularly in series production, primarily because it is of high quality Products guaranteed economic production.
  • IHU internal high-pressure forming technology
  • the elongation at break of the materials used places certain limits on the size and shape of the parts to be produced. This is due to the fact that the elongation at break of the material to be processed must not be exceeded or that there must be a safety margin to the predetermined elongation at break.
  • geometrically complex shaped parts in particular of the larger type, cannot be produced, with narrow radii being a clear obstacle.
  • CONFIRMATION OPlE is that complicated shapes not only require extremely high internal pressures, but also high locking forces that can only be produced to a limited extent and, if so, only with considerable economic effort. It should also be mentioned here that, particularly at high internal pressures, the risk of exceeding the elongation at break of the material to be processed increases considerably, so rejects must be expected.
  • the object of the invention is seen in the fact that ways are shown how geometrically complex parts can be produced without the all-important elongation at break being exceeded and that despite this possibility it is possible to work with portable internal pressures.
  • a device is to be specified which is suitable for the economical implementation of the method.
  • the procedural part of the task is solved by the features of the characterizing part of the main claim.
  • part of the previous final deformation is relocated to a pre-deforming area, i.e. an area where there is no significant deformation that is dangerous for the elongation at break, which - measured by previous final pressures - can also be achieved with realizable pressures, so that not only the risk of exceeding the elongation at break is eliminated, but also the high costs for high pressures and locking forces are avoided.
  • a pre-deforming area i.e. an area where there is no significant deformation that is dangerous for the elongation at break, which - measured by previous final pressures - can also be achieved with realizable pressures, so that not only the risk of exceeding the elongation at break is eliminated, but also the high costs for high pressures and locking forces are avoided.
  • the preforming in an advanced work stage in the sense of the circumferential dimensions in a final deformation stage can be carried out without difficulty with today's computer technology, since with a computer the z.
  • pre-recorded finished part can be dismantled to a certain extent and the determined extent can be transferred to the pre-deformation.
  • an advantageous punch-die tool is specified with which a correspondingly pre-shaped part or a pre-shaped tube of any cross-section can be brought into the final shape without high internal pressures.
  • stamp-die tool is designed as specified in claim 17.
  • the special design of the die is of particular importance since it offers the possibility of bringing numerous cross-sections into the final shape with a relatively small amount of fitting pieces and corresponding stamps.
  • the invention is illustrated in the drawing, for example, ie the method according to the invention is explained in more detail using a device; show it:
  • Figure 1 is a cut tube of round cross-section.
  • Figure 2 shows the same tube, but partially pre-deformed.
  • FIG. 5 shows a schematically illustrated bending machine of a known type
  • FIG. 6 is a top view of a die for the final deformation
  • Fig. 7 is a section along the line Vll-Vll of Fig. 6;
  • FIG. 10 shows a modified version compared to FIGS. 8 and 9 with the stamp not yet retracted
  • FIG. 11 shows the same tool with the stamp retracted.
  • FIGS. 2 and 3 show the pre-deformation stages of a tube 1, it being important that the circumferential dimensions at each cross-sectional point remain at least approximately the same as the circumferential dimensions of the end product.
  • FIGS. 4 to 7 an IHU mold 2, a bending machine 3 and a punch-die tool 4 are required, for which purpose reference is made to FIGS. 4 to 7.
  • the IHU shape is constructed in the usual way and it receives the tube 1 according to FIG. 1.
  • the tube 1 is expanded via high-pressure connections 5, so that it comes into contact with the mold surface 6 in the middle of the hydroforming mold.
  • an axial compression takes place at the same time with the aid of corresponding pistons 7; these are connected via lines 8 to a pressure source.
  • the filled or unfilled, now horseshoe-shaped tube 1 is inserted into a cutout 11 in the die 12; the preformed tube 1 is connected via lines 13 with valves 14 to a pressure source in order to be able to build up a supporting internal pressure. It is understood that the pipe 1 is to be sealed accordingly at 15.
  • a punch 16 engages in the cutout 11 of the die 12, which brings the round cross-sections into the final cross-sectional shape under appropriate pressure, without a change in the circumferential dimensions compared to the circumferential dimensions of the round cross-sections; even if the stamp 16 - as can be seen in FIG. 7 - is specially designed on its underside 17. Bottom 17 and bottom and side walls of the cutout 11 result in the cross-sectional shape shown when the punch 16 is retracted.
  • corner regions and / or small radii can be formed without the elongation at break of the respective material being exceeded. It should be pointed out that - in extreme cases - with such a deformation, the respective outer radius may correspond approximately to the material thickness of the sheet metal or the like. Such is unattainable with known methods.
  • a trough 17 is formed in a die 12, which has a recess 18.
  • fittings 19 are inserted, between which the punch 16 engages.
  • the fitting pieces 19 delimit a cavity 20 together with the punch 16. If the finished part to be produced from a pipe cross section 1 has undercuts in relation to the punch 16 to 21, it is necessary to design the fitting pieces as shown. While only a pre-deformed part 1 is shown in FIG. 8, FIG. 9 shows part 1 in the final form, with the stamp 16 retracted. In order to avoid the bulges 22 indicated by dashed lines inwards, the cavity 10 is closed with a supporting medium to fill.
  • the tool 4 of FIGS. 10 and 11 does not differ in its effect, but only in its structure from the type according to FIGS. 8 and 9.
  • the die 12 here consists of two parts 23, 24, the part 24 in the tub 17 has a built-in trough 25.
  • the adapters 26 are comparable to the adapters 19, as is the stamp 16.
  • the preformed tube 1 is filled with a medium which has an internal support on all sides WO 00/01500 _ g. PCT7EP99 / 04541

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour la fabrication de pièces à l'aide de la technique de formage par haute pression interne comportant plusieurs étapes de formage, à partir de tubes laminés, étirés ou soudés de section quelconque. L'invention vise à montrer comment des pièces de forme géométrique compliquée peuvent être réalisées de manière économique, sans que l'allongement à la rupture déterminant pour la durée de vie de la pièce soit dépassé, et de telle façon qu'il soit possible également de travailler avec des pressions internes supportables lors du formage. En outre, le dispositif doit garantir la mise en oeuvre économique du procédé. A cet effet, le tube respectif (1) est formé grâce à au moins une étape de préformage, de telle manière qu'en chaque point de la section du tube préformé (9), les dimensions périphériques obtenues lors du préformage soient maintenues au cours de l'étape de formage final.
PCT/EP1999/004541 1998-07-02 1999-07-01 Procede et dispositif pour la fabrication de pieces a l'aide de la technique de formage par haute pression interne WO2000001500A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU49037/99A AU4903799A (en) 1998-07-02 1999-07-01 Method and device for producing parts by means of internal high-pressure metal forming

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19829577.4 1998-07-02
DE1998129577 DE19829577B4 (de) 1998-07-02 1998-07-02 Verfahren und Vorrichtung zur Herstellung von Teilen mit Hilfe der Innen-Hochdruck-Umformtechnik

Publications (1)

Publication Number Publication Date
WO2000001500A1 true WO2000001500A1 (fr) 2000-01-13

Family

ID=7872755

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/004541 WO2000001500A1 (fr) 1998-07-02 1999-07-01 Procede et dispositif pour la fabrication de pieces a l'aide de la technique de formage par haute pression interne

Country Status (3)

Country Link
AU (1) AU4903799A (fr)
DE (1) DE19829577B4 (fr)
WO (1) WO2000001500A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103212619A (zh) * 2013-04-10 2013-07-24 宁波帕沃尔精密液压机械有限公司 一种变合模力的管材内高压成形装置和方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004025857A1 (de) * 2004-05-24 2005-12-22 Wilhelm Karmann Gmbh Rohrprofil mit bereichsweise gekrümmtem Verlauf und Verfahren zu seiner Herstellung
DE102012008003A1 (de) 2012-04-20 2013-10-24 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Scheibenbremse für Fahrzeuge
JP7286571B2 (ja) * 2020-03-02 2023-06-05 住友重機械工業株式会社 成形装置、及び成形方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414545A2 (fr) * 1989-08-24 1991-02-27 Graph-Tech, Inc. Dispositif et procédé pour former un cadre tubulaire
JPH03106528A (ja) * 1989-06-05 1991-05-07 Suzuki Motor Corp 自動二輪車の後ホークの左右のホークチューブ製造方法
EP0588528A1 (fr) * 1992-09-15 1994-03-23 Aquaform Inc Dispositif et procédé pour former et percer hydrauliquement un cadre tubulaire
EP0770435A1 (fr) * 1995-09-21 1997-05-02 Benteler Ag Méthode de fabrication d'une pièce de construction et support d'essieu

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322711C2 (de) * 1993-07-08 1995-06-08 Rofo Rohrbogen Und Formstuecke Verfahren zum Herstellen eines Rohrbogens
US5471857A (en) * 1994-03-07 1995-12-05 Mascotech Tubular Products, Inc. Process for hydroforming a vehicle manifold
DE4434441C2 (de) * 1994-09-27 1997-01-09 Daimler Benz Ag Vorrichtung zum Herstellen von Hohlkörpern nach dem Innenhochdruckumform-Verfahren
DE19633760C2 (de) * 1996-08-22 2001-11-15 Forschungsges Umformtechnik Verfahren zum Hydroumformen und zugehörige Vorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106528A (ja) * 1989-06-05 1991-05-07 Suzuki Motor Corp 自動二輪車の後ホークの左右のホークチューブ製造方法
EP0414545A2 (fr) * 1989-08-24 1991-02-27 Graph-Tech, Inc. Dispositif et procédé pour former un cadre tubulaire
EP0588528A1 (fr) * 1992-09-15 1994-03-23 Aquaform Inc Dispositif et procédé pour former et percer hydrauliquement un cadre tubulaire
EP0770435A1 (fr) * 1995-09-21 1997-05-02 Benteler Ag Méthode de fabrication d'une pièce de construction et support d'essieu

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 294 (M - 1140) 25 July 1991 (1991-07-25) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103212619A (zh) * 2013-04-10 2013-07-24 宁波帕沃尔精密液压机械有限公司 一种变合模力的管材内高压成形装置和方法

Also Published As

Publication number Publication date
DE19829577B4 (de) 2005-06-16
AU4903799A (en) 2000-01-24
DE19829577A1 (de) 2000-01-13

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