EP1106275B1 - Vorrichtung zum hydraulischen Hochdruckumformen eines rohrförmigen Bauteils oder einer Platine - Google Patents

Vorrichtung zum hydraulischen Hochdruckumformen eines rohrförmigen Bauteils oder einer Platine Download PDF

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Publication number
EP1106275B1
EP1106275B1 EP00124967A EP00124967A EP1106275B1 EP 1106275 B1 EP1106275 B1 EP 1106275B1 EP 00124967 A EP00124967 A EP 00124967A EP 00124967 A EP00124967 A EP 00124967A EP 1106275 B1 EP1106275 B1 EP 1106275B1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
forming
cylinder unit
plate
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
EP00124967A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1106275A2 (de
EP1106275A3 (de
Inventor
Wolfgang Streubel
Thomas Harbarth
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.)
Benteler Deutschland GmbH
Original Assignee
Benteler Deutschland GmbH
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 Benteler Deutschland GmbH filed Critical Benteler Deutschland GmbH
Publication of EP1106275A2 publication Critical patent/EP1106275A2/de
Publication of EP1106275A3 publication Critical patent/EP1106275A3/de
Application granted granted Critical
Publication of EP1106275B1 publication Critical patent/EP1106275B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • B21D26/039—Means for controlling the clamping or opening of the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B30B1/34—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure involving a plurality of plungers acting on the platen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5185—Tube making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5199—Work on tubes

Definitions

  • the invention relates to a device for hydraulic Hydroforming according to the preamble of claims 1 and 2 (see e.g. DE-A-197 05 244).
  • the hold time is e.g. for chassis components, like side members and cross bridges, in the area from 5 to 10 seconds. This then results in cycle times in the range of about 30 to 40 seconds to manufacture every finished part including the transport of the component to be deformed into the mold and the removal of the deformed component from the mold.
  • the invention is based on the prior art Task based on a device for hydraulic High pressure forming of a tubular component or one To create circuit board that with easy integration in a bound mechanical press is structurally simple designed and easy to use.
  • the invention advantageously combines a molding tool with lower die and upper die for hydraulic Internal high pressure forming of tubular components or for hydraulic high pressure forming of blanks with a tied mechanical press, as in the form of a Eccentric, crank or toggle press is known.
  • a characteristic feature of such a mechanical Press is the continuous movement in continuous operation. On the other hand, this requires high pressure forming an absolutely closed one during the forming process Forming tool with sufficient over the period of forming Clamping force.
  • the invention takes into account that Upper die of the mold over at least one Piston-cylinder unit containing hydraulic fluid the press ram of a mechanical press is relatively limited is movably coupled. Because of one The piston-cylinder unit becomes a hydraulic cushion created between the upper die and the press ram. This hydraulic cushion then allows one Decoupling of the continuous plunger movement from the Molding tool for the time of high pressure forming a tubular component or a circuit board in the area of bottom dead center.
  • the piston-cylinder unit used in the piston-cylinder unit contained fluid immediately for forming the component or to use the circuit board. This is the cylinder the piston-cylinder unit with the interior of the component or fluid-conducting with the molding space of the molding tool connectable. Because of this, a separate Pressure intensifier and associated hydraulic units and components are eliminated.
  • the advantages of the training according to the invention are one significant reduction in cycle times, a reduction the investment costs for the components for pressure generation as well as a significantly reduced control effort.
  • a circuit board becomes only one Piston-cylinder unit or multiple piston-cylinder units between the upper die and the press ram incorporated.
  • Especially the arrangement of several smaller piston-cylinder units along one Component or board contour and direct hydraulic Connection in which the piston area of the projected Surface of the component or the board corresponds, can ensure that at every moment of forming a balance of forces between the piston-cylinder units and the component or the circuit board prevails. With this arrangement, the other advantage achieved elastic deformations in the mold be minimized, resulting in improved manufacturing accuracy leads.
  • a tubular component can be filled with conventional components Hydraulic units take place. Is conceivable but also a variant in which a filling of the Component is carried out in a plunge pool.
  • piston-cylinder unit as a separate, both from Upper tool and device separable from the press ram trained, it can with flexible design for different molds and mechanical Presses are used.
  • An advantageous development of the invention consists in the features of claim 3, according to which the piston the piston-cylinder unit via a piston plate on the Press ram and the cylinder over a cylinder plate are releasably attached to the upper die.
  • the piston plate also indicates your assigned return means on that with the cylinder or the cylinder plate relative are movably connected.
  • These return means can for example consist of guide rods, which consoles relatively movable on the cylinder or on the cylinder plate enforce and provide driving heads at the free end are that under the consoles or the cylinder plate grasp and during the upward movement of the press ram the cylinder or the cylinder plate and thus raise the upper die.
  • a fluid separator incorporated, so in the area of the piston-cylinder unit advantageously a hydraulic oil, if necessary applied with suitable additives and for Forming a tubular component or a blank uses an aqueous fluid with only minor lubrication additives become.
  • the fluid separator as a pressure intensifier with a low gear ratio. Because of this, there is additional freedom in the design and adaptation of the piston-cylinder unit to a tubular component or to a Circuit board.
  • a line between the piston-cylinder unit and the Mold a pressure coaster with subordinate Pressure relief valve connected. That on the low pressure side of the pressure reducer arranged pressure relief valve causes that to determine only when one reaches Internal pressure in the component or in the mold space that of the piston-cylinder unit displaced volume over the Pressure intensifier is discharged. That particular pressure corresponds to the pressure required to completely fill out the Form space through the component or adaptation of the board the contours of the molding space is required.
  • Such one Solution of the pressure or volume limitation is due the very high pressures that occur in hydroforming in the range 600 bar to 3000 bar advantageous because for this application has a direct pressure limitation through commercially available Pressure limiter is not possible.
  • 1 is generally a device for hydraulic hydroforming of a tubular Component called BT.
  • the device 1 comprises a mold 2 with a lower die 3 and an upper die 4.
  • the lower die 3 is on the press table 5 a bound mechanical press 6 in Form of a crank press releasably set.
  • the upper die 4 is a cylinder plate 7 with the cylinder 8 one Piston-cylinder unit 9 releasably connected.
  • the piston 10 the piston-cylinder unit 9 is via a piston plate 11 with the press ram 12 of the mechanical press 6 releasably connected.
  • FIGS. 1 to 3 show that the Cylinder plate 7 rod-shaped return means 13 attached are the holes 14 in the cylinder plate 7th grasp relatively flexibly. At the free end, the Return means 13 driving heads 15.
  • the forming process of a component BT runs approximately as follows from:
  • the press ram is located 12 together with the upper die 4 in the top dead center the press 6.
  • the driving heads 15 of the return means 13 grip under the cylinder plate 7.
  • Forming fluid is via lines 17 and 16 in the cylinder chamber 19th the piston-cylinder unit 9 and filled in the component BT.
  • Device 1 shows the situation according to FIG closed mold 2.
  • the crank of the press 6 has but has not yet reached bottom dead center.
  • the press ram 12 is moved further downward, whereby with the mold 2 closed by means of of the piston 10 forming fluid from the cylinder chamber 19 of the Piston-cylinder unit 9 via line 16 in the component BT is transferred so that due to the the pressure loading the forming fluid begins, according to the figure 3 in the mold space 20 of the mold 2 to deform.
  • the check valve 18 prevents the Umformfluids.
  • crank which continues to rotate, begins the press ram 12 to raise again.
  • the molding tool 2 remains still closed.
  • the press ram 12 moves relatively to the cylinder 8 of the piston-cylinder unit 9 upwards.
  • the rod-shaped return means 13 slide through the cylinder plate 7.
  • the crank of the press 6 has the top dead center again reached, a forming cycle has ended.
  • Figures 4 and 5 show a device 1a for hydraulic high pressure forming of a tubular Component BT, in which an upper die 4a of a mold 2a over a total of three containing a hydraulic fluid Piston-cylinder units 9a with a press ram 12a of a bound mechanical press 6a in The shape of a crank press can be coupled with limited mobility is.
  • the pistons are also in this embodiment 10a of the piston-cylinder units 9a via a piston plate 11a releasably connected to the press ram 12a, whereas the cylinders 8a of the piston-cylinder units 9a via a cylinder plate 7a with the upper die 4a of the Mold 2a are releasably connected.
  • the lower die 3a of the molding tool 2a is on a die plate 21 the press table 5a of the mechanical press 6a releasably attached. It is also shown that the Lower die 3a with the die plate 21 in a drip pan 22 for the forming fluid.
  • the piston plate 11a has rod-shaped return means 13a, which bores 14a in the cylinder plate 7a grasp relatively movable and on the free Have ends of driving heads 15a.
  • the driving heads 15a lie as in the embodiment of FIGS. 1 to 3 next to the upper die 4a.
  • the cylinder spaces 19a of the piston-cylinder units 9a are connected to a fluid separator 24 via a line 23.
  • a fluid separator 24 Located in the housing 25 of the fluid separator 24 an axially displaceable piston 26, which in fluid located in the cylinder spaces 19a, e.g. on Hydraulic oil, from the forming fluid, for example with Water provided with lubricants, separates.
  • the fluid separator 24 is via a line 27 and a line 28 is connected to the molding tool 2a.
  • the on the molding tool 2a connected line 28 protrudes a check valve 29 with a switching valve 30 in connection, which in turn is connected to a feed line 31 for the Forming fluid is connected.
  • Line 28 to the molding tool 2a There is also a line 28 to the molding tool 2a Line 32 connected to a pressure reducer 33 leads.
  • the pressure reducer 33 is on the other hand a line 34 connected to a check valve 35, that is in front of a switching valve 36, which is in the feed line 31 is incorporated.
  • a pressure relief valve 37 is connected, on the other hand via a line 38 with one not closer illustrated reservoir is connected.
  • FIG. 5 clearly shows the distribution of the piston-cylinder units 9a along the in the embodiment in the top view trapezoidal curved component BT.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP00124967A 1999-12-01 2000-11-16 Vorrichtung zum hydraulischen Hochdruckumformen eines rohrförmigen Bauteils oder einer Platine Expired - Lifetime EP1106275B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19957888A DE19957888C2 (de) 1999-12-01 1999-12-01 Vorrichtung zum hydraulischen Hochdruckformen eines rohrförmigen Bauteils oder einer Platine
DE19957888 1999-12-01

Publications (3)

Publication Number Publication Date
EP1106275A2 EP1106275A2 (de) 2001-06-13
EP1106275A3 EP1106275A3 (de) 2003-01-08
EP1106275B1 true EP1106275B1 (de) 2004-07-07

Family

ID=7931036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124967A Expired - Lifetime EP1106275B1 (de) 1999-12-01 2000-11-16 Vorrichtung zum hydraulischen Hochdruckumformen eines rohrförmigen Bauteils oder einer Platine

Country Status (5)

Country Link
US (1) US6493913B2 (cs)
EP (1) EP1106275B1 (cs)
AT (1) ATE270594T1 (cs)
CZ (1) CZ295637B6 (cs)
DE (2) DE19957888C2 (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017106654U1 (de) 2017-11-03 2018-01-11 Wvl-Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh Formbackensystem eines Innenhochdruck-Umformwerkzeuges
DE102016013989A1 (de) 2016-11-23 2018-05-24 Wvl-Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh Verfahren und Werkzeug zur Umformung von Rohr-Fertigteilen mit aufgeweiteten maßvergrößerten Rohrabschnitten

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Publication number Priority date Publication date Assignee Title
ATE291507T1 (de) * 2000-12-12 2005-04-15 Wobst Stefan Vorrichtung und verfahren zur innenhochdruckumformung (ihu) und ihu- werkzeuganordnung
ATE319526T1 (de) * 2001-11-21 2006-03-15 Schulz Gmbh Wilhelm Verfahren und vorrichtung zum umformen von rohren
DE10306161B4 (de) * 2003-02-14 2005-02-17 Daimlerchrysler Ag Einrichtung zum Innenhochdruckumformen von Werkstücken
DE10329719A1 (de) * 2003-07-02 2005-01-20 Daimlerchrysler Ag Rohrbogen
DE10347601B4 (de) 2003-10-14 2011-01-27 Benteler Automobiltechnik Gmbh Vorrichtung und Verfahren zum hydraulischen Hochdruckumformen einer Platine
DE102005014940B4 (de) * 2005-04-01 2008-07-24 Viega Gmbh & Co. Kg Fitting und Verfahren zur Herstellung eines Fittings
DE102005057863B3 (de) * 2005-12-02 2006-08-17 Benteler Automobiltechnik Gmbh Drucksteuerungssystem für die Innenhochdruckumformung
DE102007019511B3 (de) * 2007-04-25 2008-11-13 Benteler Automobiltechnik Gmbh Vorrichtung und Verfahren zum Innenhochdruckumformen eines Verbundmetallrohres
US7832244B2 (en) * 2008-03-13 2010-11-16 Gm Global Technology Operations, Inc. Controlling fluid pressure in a hydroforming process
US8756970B2 (en) 2011-03-14 2014-06-24 Ford Global Technologies, Llc Method of drawing a blank by preforming a channel in a preform that is subsequently drawn into a die cavity
CN103272910B (zh) * 2013-05-20 2015-04-08 哈尔滨工业大学 一种可实现内外加压的管材液压成形装置
CN103341544B (zh) * 2013-07-08 2015-08-05 宁波市沃瑞斯机械科技有限公司 一种多阶ω管内高压成形方法及装置
CN108526284A (zh) * 2018-04-18 2018-09-14 保隆(安徽)汽车配件有限公司 一种管件内高压外低压成型方法及成型机
JP7172885B2 (ja) * 2019-06-28 2022-11-16 株式会社デンソー プレス成形機
CN113319185B (zh) * 2021-06-08 2023-04-11 哈尔滨工业大学 一种大直径薄壁筒形件流体压力成形装置及成形方法
EP4403278A4 (en) * 2021-09-17 2025-01-01 Sumitomo Heavy Industries, LTD. FORMING DEVICE
CN119407008A (zh) * 2025-01-07 2025-02-11 宁波中易特成智能装备有限公司 一种超塑气胀成形管材液压机

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FR1472282A (fr) * 1966-02-24 1967-03-10 Chambre Syndicale Des Fabrican Procédé et appareillage pour la transformation d'un tronçon de tube métallique en sphère, et application de la sphère ainsi obtenue à la réalisation de noeuds d'assemblage notamment pour charpentes tubulaires
JPS5489970A (en) * 1977-12-27 1979-07-17 Tokyo Puresu Kougiyou Kk Buldge molding
JPS5522423A (en) * 1978-08-03 1980-02-18 Nippon Baruji Kogyo Kk Operating method of lateral push cylinder in hydraulic bulge forming device
US4362037A (en) * 1980-10-24 1982-12-07 Emhart Industries, Inc. Hollow article internal pressure forming apparatus and method
BG38660A1 (en) * 1983-01-11 1986-02-14 Petkov Machine for hydroplastic processing of tube items
JPS61132232A (ja) * 1984-12-03 1986-06-19 Toupure Kk バルジ成型装置
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016013989A1 (de) 2016-11-23 2018-05-24 Wvl-Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh Verfahren und Werkzeug zur Umformung von Rohr-Fertigteilen mit aufgeweiteten maßvergrößerten Rohrabschnitten
DE102016013989B4 (de) 2016-11-23 2019-08-01 Wvl-Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh Verfahren und Werkzeug zur Umformung von Rohr-Fertigteilen mit aufgeweiteten maßvergrößerten Rohrabschnitten
DE202017106654U1 (de) 2017-11-03 2018-01-11 Wvl-Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh Formbackensystem eines Innenhochdruck-Umformwerkzeuges

Also Published As

Publication number Publication date
DE19957888C2 (de) 2002-11-14
EP1106275A2 (de) 2001-06-13
CZ20004479A3 (cs) 2001-09-12
CZ295637B6 (cs) 2005-09-14
DE19957888A1 (de) 2001-06-07
EP1106275A3 (de) 2003-01-08
US20010005929A1 (en) 2001-07-05
US6493913B2 (en) 2002-12-17
DE50007007D1 (de) 2004-08-12
ATE270594T1 (de) 2004-07-15

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