WO2007009595A1 - Procede et dispositif pour retirer une partie decoupee separee d'un profile creux - Google Patents

Procede et dispositif pour retirer une partie decoupee separee d'un profile creux Download PDF

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Publication number
WO2007009595A1
WO2007009595A1 PCT/EP2006/006546 EP2006006546W WO2007009595A1 WO 2007009595 A1 WO2007009595 A1 WO 2007009595A1 EP 2006006546 W EP2006006546 W EP 2006006546W WO 2007009595 A1 WO2007009595 A1 WO 2007009595A1
Authority
WO
WIPO (PCT)
Prior art keywords
lochbutzens
hollow profile
mold space
hydroforming
sensor
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/EP2006/006546
Other languages
German (de)
English (en)
Inventor
Dirk Brumme
Thomas Griskiewitz-Ballhöfer
Jörg KÖLLN
Thies Kölln
Jens Schult
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of WO2007009595A1 publication Critical patent/WO2007009595A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow 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
    • B21D26/035—Deforming tubular bodies including an additional treatment performed by fluid pressure, e.g. perforating

Definitions

  • the invention relates to a method for removing at least one in a hydroforming from a hollow profilewithgetrennten Lochbutzens from the forming tool according to the preamble of claim 1 and an apparatus for performing the method according to the preamble of claim 5.
  • a generic method or a generic device is known from DE 199 02 633 Al.
  • the possibility of removing pinholes, which are formed during the hydroforming by a hole process on the reshaped or deformed hollow profile, discussed the punched-out slug is pressed by the internal high pressure in the guide hole of the receding punch and then after the pressure release by ancestors of the punch pressed into the mold space of this from the guide bore and a catcher or suction device is supplied.
  • This method is relatively expensive, since the collecting device or the suction device has to be retracted each time anew into the tool and positioned at the appropriate place. This undesirably prolongs the process time.
  • it is not always guaranteed that the Lochbutzen is clamped in the F ⁇ hrungsbohrung so that it by the opening process of the
  • Hydroforming die can not fall out. In this case, the Lochbutzen would remain in the forming tool and damage the related in the next forming hollow profile.
  • the invention is based on the object of developing a generic method to the effect that a complete removal of all pinholes from the hydroforming is ensured in a relatively simple manner.
  • the outlet of the respective Lochbutzens is detected inductively by the sensor.
  • a sensor which operates optically or on a tactile basis, however, their use is due to the flushing liquid discharged together with the pinhole in connection with a reliable detection with greater technical effort.
  • sensors that operate inductively are undemanding in terms of the associated technical complexity, since the flushing liquid is not detected by inductive sensors.
  • the inductively operating sensors which are designed, for example, as ring sensors, both ferromagnetic and perforated stainless steel, so that the usual materials in the production of hollow sections and thus can be detected by pinholes.
  • the pierced hole is flushed out with a closed forming tool via a disposal opening located in the lower region of the mold space.
  • the punched Lochbutzen be directed out of the mold space, so that the Detection of the hole is simplified.
  • the sensor is arranged, on which the pinholes are conveyed directly past. Since the rinsing liquid and the Lochbutzen obey the law of gravity and thus collect in the lower part of the mold cavity, a local arrangement of the disposal opening is particularly advantageous, with any structurally designed guide can be omitted.
  • the disposal opening is advantageously designed to be closable, wherein the closure can be realized by an insertable and cleansingentEnglishbaren stopper, by slides in the manner of an iris diaphragm or by the end of the hollow profile sealing axial piston.
  • the Axialstempel is completely withdrawn from the hydroforming, but it can only be so far withdrawn, ensuring a sealing closure of the mold space of the forming that the end of the hollow profile on the one and the disposal opening to be released to the other.
  • the rinsing takes place via one of the hollow profile during the forming of sealing Axialstempel.
  • the axial ram on an axially extending fluid channel which is part of the purging device and structurally advantageous may be identical to the fluid channel through which the hollow profile is filled with pressurized fluid and placed under internal high pressure. By using the same channel, weakening of the material of the axial punch is avoided.
  • any suitable liquid can be used and introduced into the hydroforming tool. Resource-saving it is on the pressurized fluid, which already exists anyway, to use as a winding fluid.
  • the pressurized fluid is used in a relaxed state.
  • the invention is explained in more detail with reference to an exemplary embodiment shown in the drawing.
  • the figure shows in a lateral longitudinal section schematically a device according to the invention with the sequence of removing a Lochbutzens from the hollow profile or the mold space.
  • FIG. 1 shows an internal high-pressure forming tool 1, which consists of an upper tool 2 and a lower tool 3.
  • the engravings 4 and 5 of the upper tool 2 and the lower tool 3 form together a mold space 6, in which a hollow profile 7 to be reshaped by means of internal high pressure is introduced.
  • a punch 8 is integrated, which is slidably received in a Fuhrungsbohrung 9 formed there. By means of the punch 8 is punched during the hydroforming or subsequent to the completed transformation at still existing high pressure from the hollow section 7 a pierced hole 10 from outside to inside.
  • the pinhole 10 drops into the interior 11 of the hollow section 7 after a pressure reduction.
  • At least one axial punch 12 has a centrally extending fluid channel 14, which opens out at the end face 15 of the axial punch 12 and which is fluidically connected at the rear to a fluid high-pressure generating system. Accordingly, a pressurized fluid is introduced into the interior 11 of the hollow section 7 via the fluid channel 14, after which it is conveyed by means of the
  • Fluid high pressure generating system is tensioned, whereby the hollow section 7 is deformed widening.
  • Hydroforming tool 1 out a device which contains a flushing device for leaching out of the Lochbutzens 10.
  • the rinsing device is identical to the high-pressure fluid-generating system, the rinsing liquid being formed by the pressurized fluid.
  • High-pressure fluid generating system is controlled such that the pressurized fluid or the rinsing liquid is guided in the relaxed state via the fluid channel 14 of the axial punch 12 into the interior 11 of the hollow section 7, whereby the fluid channel 14 is part of the purging device.
  • the Axialstempel 13 is pulled out of the hollow section 7, while the Axialstempel 12 remains in its sealing position.
  • the axial punch 13 is not pulled out of the forming tool 1 or its mold space 6, so that it remains sealed. By withdrawing the Axialstempels 13, the associated end 16 of the hollow section 7 is released.
  • a disposal opening 17 free which is arranged in the lower region 18 of the mold space 6 outside of the hollow section 7.
  • a bore 19 which leads from the forming tool 1 to the outside and the same as the disposal opening 17 has a larger diameter than the Lochbutzen 10th
  • the inside 11 of the hollow section 7 loosely located Lochbutzen 10 is now detected after the introduction of the rinsing liquid from this and driven out by the scavenging pressure from the hollow section 7 in the direction of the arrow.
  • the rinsing liquid directs the pinhole 10 targeted to the disposal opening 17, after which the rinsing liquid together with hole 10 is removed via the bore 19 from the forming tool 1 to the outside.
  • the inventive device further includes a sensor 20 which operates on an inductive basis and is annular.
  • the sensor 20 is attached to the outer side 21 of the hydroforming tool 1, wherein the sensor ring is aligned with the bore 19.
  • the opening of the ring in this case has a larger diameter than the bore 19. If now a hole through the hole of the sensor ring, this detects the exit of washed-out Lochbutzens 10 from the mold space 6.
  • the sensor outputs a signal that visualizes to the outside or is converted acoustically.
  • the signal of the exit of the Lochbutzen 10 is fed to a signal processing organ of the device that detects the output from the sensor 20 for each outlet of a Lochbutzens 10 from the mold cavity 6 signals and counts and that this number with the number of in a manufacturing process of the hollow section 7 in Hydroforming 1 compared punching operations.
  • the number of perforations is usually predetermined before the start of the process and stored control technology in a data memory.
  • the organ is connected to the purging device via a control line, wherein the organ controls the purging device such that the mold space 6 and / or the interior 11 of the hollow section 7 is purged until the number of detected leaks of a Lochbutzens 10 with the number Punching matches.
  • the organ also controls the rinsing pressure of the rinsing device.
  • pierced slugs 10 which for some reason stubbornly adhere to the walls of the hollow section 7 and / or the mold cavity 6, are detached from it by a targeted increase in the scavenging pressure and also the disposal port 17 and the bore 19 and thus the sensor 20 is supplied become.
  • the signal that the sensor 20 emits during this process is characteristic of the shape of the number of adjacent pinholes 10.
  • the signal-processing element is designed so that it recognizes the signal shape and height and assigns them to a specific number of pinholes 10 .
  • the respective signal shape and height can also be stored in an electronic data memory of the institution as a reference pattern, so that only a comparison of the signal shapes or heights must be made to detect the number of pinhole 10.
  • the forming tool 1 is closed and introduced the axial punches 12 and 13 in the new hollow section 7 sealing.
  • the axial punch 13 closes the disposal opening 17 fluid-tight.

Landscapes

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

Abstract

La présente invention concerne un procédé et un dispositif permettant de retirer d'un outil de formage par haute pression interne (1) au moins une partie découpée (10) qui est séparée d'un profilé creux (7) dans cet outil de formage par haute pression interne (1). La partie découpée (10) se trouvant à l'intérieur d'un espace de formage (6) de l'outil de formage (1) sous une pression atmosphérique est évacuée de l'espace de formage (6) au moyen d'un liquide de rinçage. Afin de pouvoir retirer complètement toutes les parties découpées (10) de manière relativement simple de l'outil de formage par haute pression interne (1), la sortie de la pièce découpée évacuée (10) de l'espace de formage (6) est détectée au moyen d'au moins un capteur (20). La sortie est numérotée en fonction du signal fourni par le capteur (20) et ce nombre est comparé au nombre de processus de découpage effectués lors d'un procédé de fabrication du profilé creux (7) dans l'outil de formage par haute pression interne (1). L'espace de formage (6) et/ou l'intérieur (11) du profilé creux (7) sont rincés jusqu'à ce que le nombre de sorties détectées de parties découpées (10) corresponde au nombre de processus de découpage.
PCT/EP2006/006546 2005-07-19 2006-07-05 Procede et dispositif pour retirer une partie decoupee separee d'un profile creux Ceased WO2007009595A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510033493 DE102005033493B3 (de) 2005-07-19 2005-07-19 Verfahren und Vorrichtung zum Entfernen eines aus einem Hohlprofil herausgetrennten Lochbutzens
DE102005033493.8 2005-07-19

Publications (1)

Publication Number Publication Date
WO2007009595A1 true WO2007009595A1 (fr) 2007-01-25

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Application Number Title Priority Date Filing Date
PCT/EP2006/006546 Ceased WO2007009595A1 (fr) 2005-07-19 2006-07-05 Procede et dispositif pour retirer une partie decoupee separee d'un profile creux

Country Status (2)

Country Link
DE (1) DE102005033493B3 (fr)
WO (1) WO2007009595A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119175389A (zh) * 2024-11-25 2024-12-24 西安卓锐航空科技有限公司 一种金属管成型加工装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013003118B4 (de) 2013-02-25 2015-03-26 Jenoptik Automatisierungstechnik Gmbh Verfahren zum Entsorgen von einem bei einem Lochungsvorgang eines Hohlprofils enstehenden Butzens
CA3165959A1 (fr) * 2021-06-29 2022-12-29 Ail International Inc. Appareil de production de panneaux creux et methode d'exploitation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19752171A1 (de) * 1996-11-26 1998-06-25 Dana Corp Hydroforming-Vorrichtung
EP0940200A2 (fr) * 1998-03-05 1999-09-08 DaimlerChrysler AG Méthode et appareil pour l'enlèvement d'une pièce découpée d'un outil de formage par haute pression interne
DE19902633A1 (de) * 1998-10-23 2000-05-04 Alusuisse Lonza Services Ag Verfahren zum Entnehmen eines Butzens oder dergleichen Abfallstücks von einem Werkstück, sowie Vorrichtung dazu
EP1200211B1 (fr) * 1999-07-28 2003-05-14 Vari-Form Inc. Procede et appareil permettant de former des trous opposes dans une paroi laterale d'un element a travailler de forme tubulaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19752171A1 (de) * 1996-11-26 1998-06-25 Dana Corp Hydroforming-Vorrichtung
EP0940200A2 (fr) * 1998-03-05 1999-09-08 DaimlerChrysler AG Méthode et appareil pour l'enlèvement d'une pièce découpée d'un outil de formage par haute pression interne
DE19902633A1 (de) * 1998-10-23 2000-05-04 Alusuisse Lonza Services Ag Verfahren zum Entnehmen eines Butzens oder dergleichen Abfallstücks von einem Werkstück, sowie Vorrichtung dazu
EP1200211B1 (fr) * 1999-07-28 2003-05-14 Vari-Form Inc. Procede et appareil permettant de former des trous opposes dans une paroi laterale d'un element a travailler de forme tubulaire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119175389A (zh) * 2024-11-25 2024-12-24 西安卓锐航空科技有限公司 一种金属管成型加工装置

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Publication number Publication date
DE102005033493B3 (de) 2006-09-28

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