EP0858848B1 - Umformvorrichtung - Google Patents
Umformvorrichtung Download PDFInfo
- Publication number
- EP0858848B1 EP0858848B1 EP98102248A EP98102248A EP0858848B1 EP 0858848 B1 EP0858848 B1 EP 0858848B1 EP 98102248 A EP98102248 A EP 98102248A EP 98102248 A EP98102248 A EP 98102248A EP 0858848 B1 EP0858848 B1 EP 0858848B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- counter
- forming apparatus
- internal high
- tool
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B21D26/021—Deforming sheet bodies
- B21D26/025—Means for controlling the clamping or opening of the moulds
-
- 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
Definitions
- the invention relates to a hydroforming device with a multi-part Mold and one of the parts of the mold against the deformation holding clamping device.
- DE-A-4 432 692 describes a generic high pressure forming device described a pot-like clamping device. A forming tool is put through the pot and a placed on it, braced against the pot and the forming tool Lid held together. A lifting cylinder is available for lifting and lowering the lid Available.
- the shaping device according to the invention which achieves this object is characterized in that that the clamping device and / or the mold at least one, deformations of the mold cavity at least partially compensating during forming Counter-tensioning device.
- a certain deformation of the tensioning device is taken or / and tool in purchase, but generated by applying clamping force one or more provided in the clamping device and / or the tool Counter clamping devices for compensating deformations, so that the mold cavity largely maintains its shape.
- clamping and tool parts are less stable with less effort Material are made. This advantageously also reduces the mass and weight of the Total forming device.
- counter-tensioning devices can be used are, in a preferred embodiment of the invention, the counter-tensioning device a back pressure chamber.
- the back pressure chamber can be subjected to the working pressure, which is advantageous a device used for pressurizing the workpiece also for the Back pressure chamber can be used.
- the back pressure chamber is in one against the Forming tool adjacent clamping jaws provided, e.g. between the back pressure chamber and the tool provided a relatively thin clamping jaw wall can be, which is under the influence of the back pressure against the tool bulges and thus counteracts yielding of the clamping jaw or / and tool.
- a short-stroke cylinder in which the back pressure chamber is formed, engage the jaws.
- the clamping jaw lies against the mold with one by pressurizing the back pressure chamber against the rest of the jaws movable part of the jaw, this movable part in particular in the manner of a guided in the jaw Pressure piston is formed.
- the clamping piston moves Maintaining a suitable pressure in the back pressure chamber accordingly, so that the tool part against it remains in place.
- This embodiment with a movable jaw part is particularly advantageous in an internal high-pressure forming device, in which the clamping jaws via a bayonet ring can be brought into the clamping system against the tool, one being a Tool holder for the bayonet ring and a counter bearing forms. Due to the possibility of compensation via the jaws with the back pressure chamber Above all, defuse the strength requirements for the locking parts the bayonet lock, which therefore need to be less solid.
- the back pressure chamber is including a pressure connection channel, provided with a sealing lining, which, in particular, through a plastic membrane that fills the counter-pressure chamber like a balloon can be formed.
- a sealing liner is mainly used for the embodiment mentioned with a pressure piston-like jaw part is advantageous, because then the pressure piston is not particularly sealed in its guidance needs.
- the drawing shows a hydroforming device in a sectional view.
- a pot-shaped tool holder 1 with a bottom wall 2 and a vertical cylinder wall 3 drawn.
- the bottom wall 2 is one over one Large part of the wall surface extending opening 4 is provided.
- the cylinder wall 3 opposite openings 5 and 6 are formed.
- a clamping jaw 7 is on the other hand rotatable via a hydraulic cylinder 8 Bayonet ring 9 in engagement.
- a clamping jaw counter plate 10 is arranged opposite the clamping jaw 7, which rests on a shoulder formed by the remaining part of the base plate 2.
- a mold is between the clamping jaw 7 and the clamping counter plate 10 arranged with an upper part 11 and a lower part 12.
- a workpiece 13 formed by reshaping a tube.
- the clamping jaw 7 has an upper part 14 with an annular recess into which one of the Bayonet ring engages inwardly projecting ring web 15. Below the ring web 14 is the jaws 7 slightly expanded in diameter.
- the reference numeral 16 denotes a lower part of the clamping jaw 7, which one in the type of a pressure piston in a recess in the upper part 14 of the jaw 7 has guided upper section and with an annular shoulder 18 against the bottom of the Upper jaw part 14 can be applied.
- the ring shoulder 18 bears against the underside of the upper jaw part 14 remains through the upper jaw part 14 and the Lower jaw part 16 formed back pressure chamber 17, which via a connecting channel 19 can be acted upon by fluid pressure.
- the back pressure chamber 17 and the connecting channel 19 are lined with a sealing plastic membrane 20.
- the bayonet ring 9 engages with locking teeth 21 arranged on its circumference in a Ring recess 22 in the cylinder wall 3, the locking teeth in a rotational position reach behind corresponding locking teeth 23 on the cylinder wall 3.
- the bayonet ring can be lifted upwards with the clamping jaw 7 are, the locking teeth 21 of the bayonet ring 9 between the locking teeth 23rd be passed through on the cylinder wall 3.
- the bayonet ring 9 with the clamping jaw 7 first lowered, the locking teeth 21 of the bayonet ring 9 between the locking teeth 23 on the upper edge of the cylinder wall 3 of the tool holder 1.
- the bayonet ring is then rotated, the Teeth 21 of the bayonet ring 9 engage behind the locking teeth 23 on the cylinder wall 3.
- the fluid pressure supply lines 26 and 27 in the manner shown in the figure via sealing means, not shown, to the tubular Workpiece 13 attached and a fluid, in the present case water, under pressure in introduced the workpiece.
- a fluid in the present case water
- fluid is injected into the back pressure chamber at the same pressure 17 let in.
- the tubular workpiece deforms and increasingly creates the mold walls of the tool parts 11 and 12, which in particular in the vertical Direction between the jaws 7 and the upper tool part 11 or the jaw counter plate 10 and the lower tool part 12 effective pressing force is increased.
- the tool holder 1 with the jaw counter plate 10 and the clamping jaw 7 formed clamping device, in particular in the region of the bayonet ring 9 is counteracted in that the prevailing in the back pressure chamber 17 Back pressure moves the lower jaw part 18 downwards to compensate, which thus holds the workpiece parts in place while keeping the height of the mold cavity constant Job holds.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
Claims (12)
- Innenhochdruckumformvorrichtung mit einem mehrteiligen Formwerkzeug und einer die Teile (11,12) des Formwerkzeugs gegen die Umformbeaufschlagung zusammenhaltenden Spanneinrichtung (1,7,9,10),
dadurch gekennzeichnet, daß die Spanneinrichtung oder/und das Formwerkzeug mindestens eine, Deformationen des Formhohlraums beim Umformen wenigstens teilweise kompensierende Gegenspanneinrichtung (16-20) aufweist. - Innenhochdruckumformvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die Gegenspanneinrichtung eine Gegendruckkammer (17) umfaßt. - Innenhochdruckumformvorrichtung nach Anspruch 2,
dadurch gekennzeichnet, daß die Gegendruckkammer (17) zur Beaufschlagung mit dem Arbeitsdruck (Pi) der Umformvorrichtung vorgesehen ist. - Innenhochdruckumformvorrichtung nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß für die Gegendruckkammer eine von der Arbeitsdruckerzeugung unabhängige Druckbeaufschlagungseinrichtung zur Druckbeaufschlagung mit insbesondere einstellbarem Druck vorgesehen ist. - Innenhochdruckumformvorrichtung nach einem der Ansprüche 2 bis 4,
dadurch gekennzeichnet, daß die Gegendruckkammer (17) in einem gegen das Formwerkzeug (11,12) anliegenden Spannbacken (7) vorgesehen ist. - Innenhochdruckumformvorrichtung nach Anspruch 5,
dadurch gekennzeichnet, daß der Spannbacken (7) gegen das Formwerkzeug (11,12) mit einem durch die Druckbeaufschlagung der Gegendruckkammer (17) gegen den übrigen Spannbacken beweglichen Teil (18) des Spannbackens anliegt. - Innenhochdruckumformvorrichtung nach Anspruch 6,
dadurch gekennzeichnet, daß der bewegliche Teil (18) des Spannbackens einen in der Art eines in dem Spannbacken geführten Druckzylinders gebildeten Abschnitt aufweist. - Innenhochdruckumformvorrichtung nach einem der Ansprüche 5 bis 7,
dadurch gekennzeichnet, daß der Spannbacken (7) über einen Bajonettring (9) gegen das Werkzeug (11,12) anpreßbar ist, wobei eine einen Gegenspannbacken (10) aufnehmende Formwerkzeughalterung (1) für den Bajonettring ein Gegenlager bildet. - Innenhochdruckumformvorrichtung nach Anspruch 8,
dadurch gekennzeichnet, daß die Werkzeughalterung (1) topfartig, insbesondere mit einem gegen den Topfboden (2) anlegbaren Gegenspannbacken (10) ausgebildet ist. - Innenhochdruckumformvorrichtung nach einem der Ansprüche 2 bis 9,
dadurch gekennzeichnet, daß die Gegendruckkammer (17), insbesondere einschließlich eines Druckverbindungskanals (19), mit einer abdichtenden Auskleidung (20) versehen ist. - Innenhochdruckumformvorrichtung nach Anspruch 10,
dadurch gekennzeichnet, daß die Auskleidung durch eine die Gegendruckkammer (17) ballonartig ausfüllende Kunststoffmembran (20) gebildet ist. - Innenhochdruckumformvorrichtung nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, daß die oder/und eine weitere Gegendruckkammer in einem auf einen Spannbacken einwirkenden Kurzhubzylinder gebildet ist.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19705244A DE19705244A1 (de) | 1997-02-12 | 1997-02-12 | Umformvorrichtung |
| EP98102248A EP0858848B1 (de) | 1997-02-12 | 1998-02-10 | Umformvorrichtung |
| DE29823606U DE29823606U1 (de) | 1997-02-12 | 1998-02-10 | Umformvorrichtung |
| US09/154,725 US6041633A (en) | 1997-02-12 | 1998-09-17 | Forming apparatus |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19705244A DE19705244A1 (de) | 1997-02-12 | 1997-02-12 | Umformvorrichtung |
| DE19705244 | 1997-02-12 | ||
| EP98102248A EP0858848B1 (de) | 1997-02-12 | 1998-02-10 | Umformvorrichtung |
| DE29823606U DE29823606U1 (de) | 1997-02-12 | 1998-02-10 | Umformvorrichtung |
| US09/154,725 US6041633A (en) | 1997-02-12 | 1998-09-17 | Forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0858848A1 EP0858848A1 (de) | 1998-08-19 |
| EP0858848B1 true EP0858848B1 (de) | 2001-10-17 |
Family
ID=27438546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98102248A Expired - Lifetime EP0858848B1 (de) | 1997-02-12 | 1998-02-10 | Umformvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6041633A (de) |
| EP (1) | EP0858848B1 (de) |
| DE (2) | DE19705244A1 (de) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6164108A (en) * | 1998-07-21 | 2000-12-26 | Aquaform, Inc. | Hydro compression tube forming die apparatus and method for making the same |
| DE19833550B4 (de) * | 1998-07-24 | 2005-10-27 | Tower Automotive Hydroforming Gmbh & Co. Kg | Umformwerkzeug zum Umformen mittels eines Druckmittels |
| DE19858837B4 (de) * | 1998-12-19 | 2005-03-17 | Bayerische Motoren Werke Ag | Presse zum Innenhochdruckumformen |
| NO991608L (no) * | 1999-03-31 | 2000-10-02 | Norsk Hydro As | Feste/lÕseanordning |
| CA2312229C (en) * | 1999-06-21 | 2007-06-19 | Aida Engineering Co., Ltd. | Hydroforming method and hydroforming device |
| US6298701B1 (en) * | 1999-08-31 | 2001-10-09 | Dana Corporation | Mechanical press structure adapted to perform hydroforming operations |
| DE19957888C2 (de) * | 1999-12-01 | 2002-11-14 | Benteler Werke Ag | Vorrichtung zum hydraulischen Hochdruckformen eines rohrförmigen Bauteils oder einer Platine |
| DE60113595T2 (de) * | 2000-06-16 | 2006-05-18 | Nippon Steel Corp. | Formschliessvorrichtung und Formschliessverfahren |
| ATE291507T1 (de) * | 2000-12-12 | 2005-04-15 | Wobst Stefan | Vorrichtung und verfahren zur innenhochdruckumformung (ihu) und ihu- werkzeuganordnung |
| DE10113224A1 (de) * | 2001-03-19 | 2002-10-02 | Ap & T Schaefer Technologie Gm | Schließeinheit für gegen aufgehende Kräfte zusammenzupressende Werkzeuge |
| DE10139135A1 (de) * | 2001-08-09 | 2003-02-20 | Bayerische Motoren Werke Ag | Umformvorrichtung, insbesondere zur Innenhochdruckumformung |
| US6446476B1 (en) * | 2001-11-30 | 2002-09-10 | General Motors Corporation | Hydroforming method and apparatus |
| EP1539394B1 (de) * | 2002-05-08 | 2013-03-06 | Avure Technologies AB | Vorrichtung und verfahren zum expansionsformen |
| FR2850593B1 (fr) * | 2003-01-31 | 2006-09-08 | Bourgogne Hydro Technologie | Dispositif d'hydroformage d'un corps creux |
| DE10334660B3 (de) † | 2003-07-30 | 2004-11-04 | Theodor Gräbener GmbH & Co. KG | Vorrichtung zur Herstellung von Formteilen durch Innenhochdruckumformung |
| US7251973B2 (en) * | 2005-09-12 | 2007-08-07 | Gharib Mohamed T | Hydroforming apparatus |
| JP4374399B1 (ja) * | 2008-07-04 | 2009-12-02 | 新日本製鐵株式会社 | ハイドロフォーム加工方法及びハイドロフォーム加工品 |
| ES2374020T3 (es) * | 2009-02-20 | 2012-02-13 | Theodor Grabener Gmbh & Co. Kg | Herramienta de hidroformación. |
| CN103212619B (zh) * | 2013-04-10 | 2015-04-22 | 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 |
| DE202017106654U1 (de) | 2017-11-03 | 2018-01-11 | Wvl-Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh | Formbackensystem eines Innenhochdruck-Umformwerkzeuges |
| EP4197665A4 (de) * | 2020-08-11 | 2024-03-20 | Sumitomo Heavy Industries, LTD. | Formvorrichtung und metallrohr |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1370852A (fr) * | 1963-07-19 | 1964-08-28 | E Mabille Ets | Caissette métallique à munitions monobloc à bossages externes obtenus par expansion hydraulique |
| DE1777176A1 (de) * | 1966-01-29 | 1971-04-01 | Vitkovice Zelezarny | Schmiedepresse zur Herstellung von Eisenbahnradachsen |
| SU653006A1 (ru) * | 1977-10-03 | 1979-03-25 | Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт | Матрица к установке дл раздачи полых заготовок внутренним давлением |
| JPS5522423A (en) * | 1978-08-03 | 1980-02-18 | Nippon Baruji Kogyo Kk | Operating method of lateral push cylinder in hydraulic bulge forming device |
| DE2935086C2 (de) * | 1979-08-28 | 1982-04-01 | Mannesmann AG, 4000 Düsseldorf | Verfahren und Vorrichtung zur Herstellung von abgesetzten Hohlkörpern stark unterschiedlicher Querschnittsformen |
| JPS6082229A (ja) * | 1983-10-08 | 1985-05-10 | Mori Tekko Kk | バルジ加工方法 |
| JPS6096333A (ja) * | 1983-10-28 | 1985-05-29 | Hitachi Ltd | 円筒容器の保持方法 |
| SU1176994A1 (ru) * | 1984-04-23 | 1985-09-07 | Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина | Устройство дл гидроштамповки полых деталей |
| SU1433527A2 (ru) * | 1987-03-18 | 1988-10-30 | Ленинградский Политехнический Институт Им.М.И.Калинина | Устройство дл гидравлической штамповки полых деталей |
| DE4201819A1 (de) * | 1991-01-28 | 1992-07-30 | Mannesmann Ag | Verfahren und vorrichtung zum hydraulischen aufweiten von rohrfoermigen hohlprofilen |
| US5419171A (en) * | 1993-10-14 | 1995-05-30 | The Boeing Company | Isostatic bulge forming |
| DE4432692A1 (de) * | 1994-09-14 | 1996-03-21 | Huber & Bauer Gmbh | Vorrichtung zum Innenhochdruckumformen eines U-förmigen Rohlings |
-
1997
- 1997-02-12 DE DE19705244A patent/DE19705244A1/de not_active Withdrawn
-
1998
- 1998-02-10 DE DE29823606U patent/DE29823606U1/de not_active Expired - Lifetime
- 1998-02-10 EP EP98102248A patent/EP0858848B1/de not_active Expired - Lifetime
- 1998-09-17 US US09/154,725 patent/US6041633A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE29823606U1 (de) | 1999-09-02 |
| DE19705244A1 (de) | 1998-08-13 |
| EP0858848A1 (de) | 1998-08-19 |
| US6041633A (en) | 2000-03-28 |
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