EP1986801A1 - PROCEDE ET DISPOSITIF DE Formation D'UNE DECOUPE OU D'UNE PERFORATION DANS LA PAROI D'UN COMPOSANT FORME PAR UN PROCEDE DE FACONNAGE SOUS HAUTE PRESSION INTERIEURE - Google Patents

PROCEDE ET DISPOSITIF DE Formation D'UNE DECOUPE OU D'UNE PERFORATION DANS LA PAROI D'UN COMPOSANT FORME PAR UN PROCEDE DE FACONNAGE SOUS HAUTE PRESSION INTERIEURE

Info

Publication number
EP1986801A1
EP1986801A1 EP07702923A EP07702923A EP1986801A1 EP 1986801 A1 EP1986801 A1 EP 1986801A1 EP 07702923 A EP07702923 A EP 07702923A EP 07702923 A EP07702923 A EP 07702923A EP 1986801 A1 EP1986801 A1 EP 1986801A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
punch
tool
wall
forming
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.)
Granted
Application number
EP07702923A
Other languages
German (de)
English (en)
Other versions
EP1986801B1 (fr
Inventor
Bernd Wilhelm
Clemens Haller
Manfred Helm
Isaak Abramov
August Wilhelm Schäfer
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.)
Sitech Sitztechnik GmbH
Original Assignee
Sitech Sitztechnik 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 Sitech Sitztechnik GmbH filed Critical Sitech Sitztechnik GmbH
Publication of EP1986801A1 publication Critical patent/EP1986801A1/fr
Application granted granted Critical
Publication of EP1986801B1 publication Critical patent/EP1986801B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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 and a device for producing a cutout or opening in the wall of a formed by the hydroforming process component, such as hollow body, which is still in the forming tool, with subsequent fine machining of the surface.
  • apertures or cutouts can also be carried out from the inside to the outside (DE 1 552 122 A1), in that the wall is broken or cut out by increasing the internal pressure into a tool recess, wherein a outwardly displaceable support punch is provided in the tool recess can be.
  • the invention is therefore based on the object to provide a method and an apparatus of the aforementioned type, which avoids the difficulties outlined above and in which the measures described above or the like unnecessary.
  • the stated object is achieved in a method of the type mentioned in that initially the wall of the stored in the forming tool and fixed by sealing stamp and positioned starting work piece with the aid of a punch is abruptly pre-cut to a residual wall thickness.
  • the sudden action of the punch is realized by a distance between the upper part of the punch and Hydrozy-. This distance serves to avoid the acceleration section of the hydraulic cylinder.
  • the punch is withdrawn to the lateral surface of the tool.
  • the sealing dies push the exit piece to a new position to change the shape of the starting work piece, i. H. Elongation in the hydroforming, to compensate and the precut area, i. the breaking point relative to the punch to position accurately.
  • the internal pressure increases, and during the forming process, the cutting process of the cut-outs from the component is carried out according to known methods described above, from outside to inside and / or from inside to outside.
  • the pre-cut part of the wall of the component d. H. the predetermined breaking point previously generated by the embossing edge of the punch, easily and cleanly separated by abrupt and / or multiple movements of the punch between the lower and upper dead centers.
  • a complete substructure is carried out by the above-described non-cutting shaping in order to prevent inclination, edge and ridge formation of the cut and to bring in a certain shape contour having breakthroughs or cutouts.
  • This operation is by means of axial movements of the workpiece by means of the sealing stamp and vertical movements of the punch, which has a corresponding engraving in its front and / or side surface realized.
  • a fine machining of the surface of the component is performed.
  • This fine machining of the surface of the component is realized during the removal process from the tool by cold drawing of the workpiece by a drawing ring mounted in the tool by means of simultaneous axial displacement and rotation of the workpiece by the sealing punch.
  • the combined internal high pressure and non-cutting shaping method according to the invention makes it possible to perform any breakthroughs and cutouts on the workpiece and a fine machining of the surface of the component with high accuracy in a single combined forming, punching, bending, Einsenk-, Ziehräumwerkmaschine.
  • this method can be carried out by appropriate joint control of the internal high pressure, the feed, dead play and the speed of the punch, the Nachschiebung and axial position of the output piece and the axial feed, the shift and rotation of the workpiece practically in one operation.
  • FIG. 1 shows a longitudinal section through a device for carrying out the method.
  • Fig. 2 is a cross-section through the device of Fig. 2;
  • FIGs 3, 6, 11, 14 and 19 are the longitudinal sections through the apparatus of Figure 1 in different stages.
  • Fig. 5 is an enlarged partial cross section through the device
  • Fig. 21 is a diagram explaining the operation of the device.
  • Fig. 1 shows a longitudinal section of an apparatus for carrying out the method
  • Fig. 2 shows a cross section of such a device in a starting position at the beginning of the method.
  • the device or the tool has a tool 1, in which the workpiece 2, in particular a holding tube for a headrest of vehicle seats is inserted.
  • the workpiece 2 is acted upon by sealing stamps 3, 4 end.
  • Via an opening 5 the fluid for performing the hydroforming can be introduced into the hollow workpiece 2.
  • the openings or cutouts in the wall of the workpiece 2 are introduced by means of punch punches 8, 10, act on the hydraulic cylinder 6, 7.
  • the punches are held by yokes 9, 11 with bearing areas 12, 14, which are adjustable in height adjustable.
  • a die 17 or a drawing ring is arranged on the side of the tool on which the workpiece is introduced or removed. Furthermore, one or two part-circular grooves 22 are introduced into the punches 8, 10, which serve to edge straightening of the introduced apertures or cutouts.
  • a first step the workpiece 2 positioned by the sealing rams 3 is pre-cut by the punches 8, 10 in an impact-like or jerky manner.
  • the punch 10 which then causes a complete cutout, the yoke 11 is further extended, so that there is a smaller distance ⁇ ⁇ . A push is going through
  • FIGS. 4 and 5 show enlargements for this purpose. The impact introduces a pre-damage into the material.
  • FIGS. 7-10 illustrate the subsequent cutting process under the influence of the interior elevation. pressure.
  • the displaceable punch moves from outside to inside (FIGS. 8, 9) or from inside to outside (FIGS. 7, 10).
  • the wall of the workpiece 2 applies to the inside 24,25 of the tool.
  • Cutting edges 26, 27 are formed on the cutouts or averages.
  • a subsequent method step which serves for edge aftertreatment or for introducing openings or cutouts with a specific shape contour.
  • the punch 8, 10 with the cut sheet 28 or formed sheet metal portion 31 is further guided in the direction of travel in the tool, so that the edge portions 29, 30 of the cutouts or openings are aligned with the engraved groove 22 in the punch head.
  • the sealing rams 3, 4 are moved axially and in this way the possibly deformed by the cutting process edges straightened by the forced movement into the grooves 22.
  • Such reciprocation and the effects of straightening the edge portions (29, 30, 32) are apparent from Figs. 14-18.
  • the surface calibration is then followed by a drawing process.
  • the formed workpiece 2 is pulled through the die 17 under preferably simultaneous rotations and, due to the drawing ring, is straightened with regard to its mantle surface 33.
  • the process sequence is finally shown with the aid of FIGS. 21-27.
  • the workpiece 2 is received by the sealing dies 3, 4 and positioned by axial movement in the tool.
  • puncture acting punch 8, 10 a pre-damage is introduced into the wall.
  • increasing the internal pressure then follows by sudden and / or multiple movement of the punch the actual cut-out or average.
  • the edges are forced by axial movement of the workpiece in an engraved groove 22 in the punch. This is followed by the calibration process with subsequent removal of the workpiece.
  • Fig. 28 shows the velocities of the respective punch, as they result from the individual distances ⁇ i ⁇ 2 between the upper part of the punch and the hydraulic cylinders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Processing Of Solid Wastes (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP07702923A 2006-02-15 2007-01-22 PROCEDE ET DISPOSITIF DE Formation D'UNE DECOUPE OU D'UNE PERFORATION DANS LA PAROI D'UN COMPOSANT FORME PAR UN PROCEDE DE FACONNAGE SOUS HAUTE PRESSION INTERIEURE Not-in-force EP1986801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006007224A DE102006007224A1 (de) 2006-02-15 2006-02-15 Verfahren und Vorrichtung zum Herstellen eines Ausschnittes oder Durchbruchs in der Wandung eines nach dem Innenhochdruck-Umformverfahren ausgebildeten Bauteils
PCT/EP2007/000495 WO2007093269A1 (fr) 2006-02-15 2007-01-22 PROCEDE ET DISPOSITIF DE Formation D'UNE DECOUPE OU D'UNE PERFORATION DANS LA PAROI D'UN COMPOSANT FORME PAR UN PROCEDE DE FACONNAGE SOUS HAUTE PRESSION INTERIEURE

Publications (2)

Publication Number Publication Date
EP1986801A1 true EP1986801A1 (fr) 2008-11-05
EP1986801B1 EP1986801B1 (fr) 2010-05-26

Family

ID=37898652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07702923A Not-in-force EP1986801B1 (fr) 2006-02-15 2007-01-22 PROCEDE ET DISPOSITIF DE Formation D'UNE DECOUPE OU D'UNE PERFORATION DANS LA PAROI D'UN COMPOSANT FORME PAR UN PROCEDE DE FACONNAGE SOUS HAUTE PRESSION INTERIEURE

Country Status (5)

Country Link
EP (1) EP1986801B1 (fr)
CN (1) CN101454093B (fr)
AT (1) ATE468930T1 (fr)
DE (2) DE102006007224A1 (fr)
WO (1) WO2007093269A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102728701B (zh) * 2011-04-14 2014-10-01 宝山钢铁股份有限公司 液压同步冲孔装置及方法
CN102615165A (zh) * 2012-04-09 2012-08-01 吉林省元隆达工装设备有限公司 一种冲孔机构
DE102013003118B4 (de) * 2013-02-25 2015-03-26 Jenoptik Automatisierungstechnik Gmbh Verfahren zum Entsorgen von einem bei einem Lochungsvorgang eines Hohlprofils enstehenden Butzens
CN104096742B (zh) * 2013-04-15 2016-08-10 宝山钢铁股份有限公司 保持工件壁平整度的液压冲孔方法及装置
CN104511943A (zh) * 2013-09-30 2015-04-15 哈尔滨飞机工业集团有限责任公司 一种基于橡皮囊液压成形的封边框类零件切边方法
CN105583288A (zh) * 2016-01-27 2016-05-18 施密特汽车管件(安徽)有限公司 一种油缸管件的冲孔装置
CN105598249B (zh) * 2016-03-10 2017-09-12 哈尔滨奔马科技有限公司 一种获得高外翻边空心管件的方法及管件
CN105921585A (zh) * 2016-04-29 2016-09-07 保隆(安徽)汽车配件有限公司 一种内高压成型管件冲孔方法
CN107931408A (zh) * 2017-11-30 2018-04-20 苏州紫荆清远新能源汽车技术有限公司 一种内高压成型零件的开孔装置
CN109570317A (zh) * 2018-12-13 2019-04-05 安徽江淮汽车集团股份有限公司 充液成形模具
CN111496059A (zh) * 2019-01-14 2020-08-07 无锡朗贤轻量化科技股份有限公司 一种柔性横梁式油缸锁紧管件或型材液压成形工艺
CN111496056A (zh) * 2019-01-14 2020-08-07 无锡朗贤轻量化科技股份有限公司 一种柔性横梁式拉杆锁紧管件或型材液压成形工艺
CN111434408A (zh) * 2019-01-14 2020-07-21 无锡朗贤轻量化科技股份有限公司 一种柔性横梁式螺旋锁紧管件或型材液压成形工艺
CN112170610B (zh) * 2020-09-15 2021-12-14 安徽江淮汽车集团股份有限公司 一种充液成型模具及充液成型方法
CN112692150A (zh) * 2020-12-11 2021-04-23 星火智慧(杭州)信息科技有限公司 一种分集水器内胀机

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DE19805275B4 (de) * 1998-02-11 2004-07-15 Dr. Meleghy Hydroforming Gmbh & Co. Kg Verfahren und Vorrichtung zum Einbringen eines Durchbruches in eine Wand
JP4218917B2 (ja) * 1999-09-24 2009-02-04 株式会社イノアックコーポレーション へッドレストステーの凹部の加工方法
JP2001170718A (ja) * 1999-12-13 2001-06-26 Nissan Motor Co Ltd 筒状部材の液圧穴抜き加工方法
DE10328452B3 (de) * 2003-06-25 2004-12-09 Daimlerchrysler Ag Verfahren und Vorrichtung zur Erzeugung eines Loches am Außenumfang eines Hohlprofiles
DE102004007056B4 (de) * 2004-02-13 2006-02-09 Daimlerchrysler Ag Verfahren und Vorrichtung zur Herstellung eines umfänglich geschlossenen Hohlprofils
CN2770952Y (zh) * 2005-02-07 2006-04-12 江西本草天工科技有限责任公司 带高压冲头的防止压片机粘冲的装置和防粘冲的压片机

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Also Published As

Publication number Publication date
DE102006007224A1 (de) 2007-08-16
EP1986801B1 (fr) 2010-05-26
DE502007003933D1 (de) 2010-07-08
CN101454093A (zh) 2009-06-10
WO2007093269A1 (fr) 2007-08-23
CN101454093B (zh) 2012-04-18
ATE468930T1 (de) 2010-06-15

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