EP0845312B1 - Flexibel einsetzbares Werkzeug zum Innenhochdruckumformen - Google Patents
Flexibel einsetzbares Werkzeug zum Innenhochdruckumformen Download PDFInfo
- Publication number
- EP0845312B1 EP0845312B1 EP97121023A EP97121023A EP0845312B1 EP 0845312 B1 EP0845312 B1 EP 0845312B1 EP 97121023 A EP97121023 A EP 97121023A EP 97121023 A EP97121023 A EP 97121023A EP 0845312 B1 EP0845312 B1 EP 0845312B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- die
- sheet metal
- pressure
- stamp
- 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
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
- B21D26/023—Deforming sheet bodies including an additional treatment performed by fluid pressure, e.g. perforating
-
- 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
-
- 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
- B21D26/031—Mould construction
Definitions
- the invention relates to a flexible tool for hydroforming a sheet according to the generic term of Claim 1.
- EP 0 484 789 A1 discloses a method for Making a breakthrough in the wall of an as Hollow body trained workpiece.
- the Cavity of the workpiece inserted in a mold with an active medium up to an internal pressure acts on the cutting of the workpiece wall along one edge of one in the mold existing formation causes.
- the invention has for its object a flexible applicable tool for hydroforming a sheet develop with which either a combination of High pressure forming and / or cutting processes conventional forming with a stamp is possible is.
- the flexible tool for hydroforming a Sheet metal is in an upper part of the tool in which one Die is included, and a lower tool part in the a pressure chamber and a pressure medium supply are formed are divided, with the sheet between the two Tool parts can be clamped pressure-tight and under the Influence of what can be introduced into the pressure chamber Pressure medium can be molded onto the die.
- the die Stamp there is an axially movable in the die Stamp arranged with the sheet metal in some areas supportable, formable, cutable and / or out of the tool is ejectable.
- Mold inserts are used to which the sheet is placed the influence of the first stamp in some areas is malleable.
- the sheet is according to that Contour of the die and / or the arrangement and training of the stamp and / or the mold inserts deformable and / or lochbar.
- the one in the upper part of the tool towards the sheet Arranged die has a for the production of Characteristics or for the calibration of radii Form element with a defined height, the Stamp is shortened by the height of the shaped element.
- the Stamp path of the stamp can be integrated once Position measuring systems or via spacer rings under one directly pistons installed in the die holding plate or be limited.
- stamps and cylinders can be used in one of 90 Degrees different angle to the sheet surface his.
- a mold insert can be arranged in the high pressure room.
- an axially movable second stamp can be arranged with which the sheet can be cut.
- the pressure intensifier used to generate the high pressure, the via high pressure holes with the pressure chamber is directly in the lower part of the tool arranged and its push rod with that to the pressure chamber leading high pressure bore directly connected. Thereby the cost of the high pressure system can be significant be reduced.
- the tool for hydroforming has gem. 1 and 2 an upper tool part 1 and a lower tool part 2. Between these two tool halves 1 and 2, the Sheet metal board 3 inserted. Located in the lower part 2 of the tool a pressure chamber 4, which is connected via a high-pressure bore 5 is connected to the high pressure system.
- a die 6 is in the upper tool part 1 arranged with an axially displaceable punch 7.
- the Surface 6a of the die 6 points in the direction of the sheet 3 the form elements to be produced with the height h.
- the Stamp 7 is the height h of the shaped element Surface 6a, set back or shortened.
- the stamp 7 now serves according to the requirements and its training either to punch the formed Sheet 3 under high pressure P or after opening both Tool halves 1 and 2 for ejecting the formed Part.
- the stamp carries out 7 under High pressure P either a positive stroke + H towards of the sheet 3 and / or a negative stroke -H in the opposite direction.
- the stamp 7 serves as Ejector, ejection takes place after opening the Tool halves 1 and 2 without pressure by a positive Stamp stroke in the direction of the sheet 3.
- the stamp 6 acts as a punch. Through a negative return stroke -H in the direction of the arrow was caused by the High pressure punched the sheet.
- the stamp can also be designed as a shaped stamp be and with its stamp surface with the towards 6-wire recessed surface facing the sheet metal Complete die 6. After hydroforming can now an axial feed movement of the stamp 7 around the positive stroke, so that the sheet 3 in one second forming stage by the punch 7 under high pressure P is reshaped.
- the stamp 7 in the die 6 even further reset so that when hydroforming a additional shaped element is formed.
- This is also in two stages possible, i.e. closes in the first stage the stamp 7 with the die 6 and after Hydroforming retracted and in the second Forming stage is the sheet 3 in the resulting drawn free space.
- stamp 7 over the surface 6a of the die 6 into the forming space protrudes into it and surface elements on its stamp surface 7a to produce the desired surface contour 3 shows by hydroforming the sheet 3 lies on the surface 6a of the die and on the stamp surface 7a of the stamp 7 (dashed line). It is also here possible, the sheet 3 with high pressure in a second Forming stage through a corresponding positive stroke + H of the stamp 7 to further shape.
- the die 6 has a plane on the sheet adjacent surface 6a without a shaped element.
- the punch 7 is also axially movable arranged.
- the stamp 7 is under high pressure deep drawing of the sheet 3 in the direction of the pressure chamber 4th
- FIG. 5 An embodiment variant in which for multiple Punch the sheet 3 or to insert several additional Form elements on the piston rod 8 of the cylinder 9 shows a plurality of stamps 7.
- FIG. 5 The stamp 7 are on the clamping plates 8 with the Piston rod 9 of the perforated cylinder 10 connected. Guided the stamp 7 in the die 6.
- FIGS. 6a to 6c A combination of the tool according to the invention with a movable die 7, the one in the middle arranged, also axially displaceable punch 7.1, shows FIGS. 6a to 6c.
- a shaped element 11 is arranged in the lower part of the tool 2, a shaped element 11 is arranged. 6a represents the starting position.
- the form stamp 7 and Punch 7.1 are both by dimension h reset.
- Fig. 7 the entire device for hydroforming is shown shown. Directly on the lower part 1 of the tool Spacer 12 of the hydraulic cylinder 13 flanged. From this the pressure on a push rod 14 and the pressure supply 5 to the pressure chamber 4 in the lower part of the tool 2 headed.
- the stamp path is via a path measuring system 15 regulated or controlled.
- Bs are advantageously two mutually independent perforated cylinders L1 and L2 provided so that independently perforated or can be reshaped with the respective stamp.
- the Hole cylinders L1 and L2 are on a cylinder holding plate 16 attached.
- FIG. 8 Another way to control the stamp path is shown in Fig. 8.
- the path is limited via a spacer plate, which can be selected according to the Direction of stroke arranged above or below the clamping plate becomes.
- the oil supply to the oil supply lines becomes corresponding regulated.
- the Perforated cylinder 10 and the cylinder holding plate 16 are omitted.
- the piston 18 is guided directly in the upper part 1 of the tool.
- a sealing flange 19 is provided over the piston 18 under the piston 18 is a via a clamping plate 20
- Spacer plate 17 arranged so that between the Clamping plate 20 and the die 6 a distance accordingly of the required stroke is available. In this room leads the second oil supply line 22.
- the first oil supply line 21 is fed to the top of the piston 18.
- the stamp can thereby as a form stamp, punch stamp or ejector be trained. Both in training as Form stamps as well as training as ejectors can be in this another punch must be arranged in the center. Due to the different design options and Interchangeability of the individual elements becomes one versatile application possible.
- the coupling or integration of the hydraulic cylinder significantly reduces the cost of the entire tool.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Forging (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
- Fig. 1:
- Werkzeug mit einem Lochstempel vor dem Umformvorgang
- Fig. 2:
- Werkzeug mit einem Lochstempel nach dem Umformen und Lochen
- Fig. 3:
- Werkzeug mit einem Stempel, dessen Oberfläche zur Herstellung der Formkonturen beim Hydroumformen genutzt wird
- Fig. 4:
- Werkzeug, bei welchem durch den Stempel gegen Hochdruck umgeformt wird
- Fig. 5:
- Werkzeug mit zwei Stempeln
- Fig. 6:
- Werkzeug mit einem axial verschiebbaren
Formstempel und einem Lochstempel
- a) in Ausgangsstellung
- b) nach dem ersten Umformvorgang mit dem Stempel
- c) nach Abschluss des Umformvorganges und des Lochens
- Fig. 7:
- Darstellung des Werkzeugen mit integriertem Hydraulikzylinder
- Fig. 8:
- Regelung des Stempelweges über Distanzringe
Claims (8)
- Flexibel einsetzbares Werkzeug zum Hydroumformen eines Bleches (3) mit einem Werkzeugoberteil (1), in dem eine Matrize (6) aufgenommen ist, und einem Werkzeugunterteil (2), in dem ein Druckraum (4) und eine Druckmittelzuführung (5) ausgebildet sind, wobei das Blech (3) zwischen beiden Werkzeugteilen (1, 2) druckdicht einspannbar und unter der Einwirkung des in den Druckraum (4) einbringbaren Druckmittels an die Matrize (6) anformbar ist,
dadurch gekennzeichnet, dassin der Matrize (6) wenigstens ein axialbeweglicher erster Stempel (7) angeordnet ist, mit dem das Blech (3) bereichsweise abstützbar, formbar, schneidbar und/oder aus dem Werkzeug auswerfbar ist,im Druckraum (4) Formeinsätze angeordnet sind, an die das Blech unter der Einwirkung des ersten Stempels (7) bereichsweise anformbar ist, wobeidas Blech (3) entsprechend der Kontur der Matrize (6) und/oder der Anordnung und Ausbildung des Stempels (7) und/oder der Formeinsätze wahlweise umformbar und/oder lochbar ist. - Flexibel einsetzbares Werkzeug nach Anspruch 1,
dadurch gekennzeichnet, dass in dem ersten Stempel (7) ein axialbeweglicher zweiter Stempel (7.1) angeordnet ist, mit dem das Blech (3) schneidbar ist. - Flexibel einsetzbares Werkzeug nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die in Richtung zum Blech (3) angeordnete Matrize (6) ein zur Herstellung von Ausprägungen oder zur Kalibrierung von Radien dienendes Formelement mit der Höhe (h) aufweist und dass der Stempel (7) um die Höhe (h) des Formelementes verkürzt ist. - Flexibel einsetzbares Werkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet dass der Stempelweg des Stempels (7) über eine Distanzplatte (16) begrenzt bzw. eingestellt wird.
- Flexibel einsetzbares Werkzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zum mehrfachen Lochen des Bleches oder zum Einbringen mehrerer zusätzlicher Formelemente an der Kolbenstange (9) des Zylinders (10) mehrere Stempel (7) in Form von Schneidstempeln oder Formstempeln angeordnet sind.
- Flexibel einsetzbares Werkzeug nach Anspruch 5, dadurch gekennzeichnet, dass Stempel (7) und Lochzylinder (10) in einem definierten Winkel ( α) zum Blech (3) geneigt sind.
- Flexibel einsetzbares Werkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die in Richtung zum Blech (3) weisende Oberfläche des Werkzeugunterteiles (2) im Bereich des Druckraumes (4) vom Blech (3) wegweisende Formelemente in Form von Radien oder ringförmigen Abschrägungen aufweist, so dass beim Lochen gleichzeitig ein Durchzug oder ein ähnliches Formelement erzeugt wird.
- Flexibel einsetzbares Werkzeug nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der zur Erzeugung des Hochdruckes dienende Hydraulikzylinder (13), der über Hochdruckbohrungen (5) mit dem Druckraum (4) in Verbindung steht, direkt im Werkzeugunterteil (2) angeordnet und dessen Druckstange (14) mit der zum Druckraum (4) führenden Hochdruckbohrung (5) direkt verbunden ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19649629 | 1996-12-02 | ||
DE19649629A DE19649629C2 (de) | 1996-12-02 | 1996-12-02 | Flexibel einsetzbares Werkzeug zum Hydroumformen eines Bleches |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0845312A1 EP0845312A1 (de) | 1998-06-03 |
EP0845312B1 true EP0845312B1 (de) | 2003-04-09 |
Family
ID=7813204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97121023A Expired - Lifetime EP0845312B1 (de) | 1996-12-02 | 1997-11-29 | Flexibel einsetzbares Werkzeug zum Innenhochdruckumformen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0845312B1 (de) |
AT (1) | ATE236745T1 (de) |
DE (2) | DE19649629C2 (de) |
ES (1) | ES2196244T3 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10016804B4 (de) * | 2000-04-05 | 2004-11-11 | Thyssenkrupp Stahl Ag | Verfahren und Vorrichtung zum Herstellen von Bauteilen aus einer tiefziehbaren Platine |
DE10149543A1 (de) * | 2001-10-08 | 2003-04-30 | Konrad Schnupp | Verfahren und Vorrichtung zum Umformen von flächigen, metallischen Werkstücken |
DE10332509B3 (de) * | 2003-07-17 | 2004-09-02 | Daimlerchrysler Ag | Verfahren und Vorrichtung zur Herstellung eines mit Löchern versehenen Werkstücks |
DE10347601B4 (de) * | 2003-10-14 | 2011-01-27 | Benteler Automobiltechnik Gmbh | Vorrichtung und Verfahren zum hydraulischen Hochdruckumformen einer Platine |
DE10349879B3 (de) * | 2003-10-25 | 2004-08-26 | Daimlerchrysler Ag | Verfahren und Vorrichtung zum Trennen eines nach dem Innenhochdruck-Umformverfahren hergestellten Hohlkörper |
DE10351400B4 (de) * | 2003-11-04 | 2005-10-06 | Umformtechnik Alfred Burggraf Gmbh | Schüttgutsortierer |
DE102010052739B4 (de) | 2010-11-26 | 2023-12-28 | Cellcentric Gmbh & Co. Kg | Verfahren und Vorrichtung zur Herstellung von Bauelementen für eine elektrochemische Zelle, insbesondere eine Brennstoffzelle, oder einen elektrochemischen Energiespeicher |
CN109482718B (zh) * | 2018-09-21 | 2021-01-26 | 北京长城华冠汽车科技股份有限公司 | 开孔方法 |
CN113860726A (zh) * | 2021-09-02 | 2021-12-31 | 英特派铂业股份有限公司 | 一种玻纤漏板底板一体成型制备方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4263375A (en) * | 1978-12-26 | 1981-04-21 | The Boeing Company | Superplastically formed titanium structure |
JPS5865523A (ja) * | 1981-10-14 | 1983-04-19 | Aida Eng Ltd | 液圧絞り装置 |
JPS61245921A (ja) * | 1985-04-23 | 1986-11-01 | Mitsubishi Heavy Ind Ltd | 板材の液圧絞り成形方法 |
DE4035625A1 (de) * | 1990-11-09 | 1992-05-14 | Audi Ag | Verfahren zum herstellen eines durchbruches in der wandung eines als hohlkoerper ausgebildeten werkstueckes und werkzeug zur durchfuehrung des verfahrens |
DE4322063C2 (de) * | 1993-07-02 | 1999-07-15 | Schaefer Hydroforming Gmbh | Verfahren und Vorrichtung zum Ausschneiden eines Ausschnittes aus einer Wandung eines nach dem Innenhochdruck-Umformverfahren hergestellten Hohlkörpers |
DE4434799A1 (de) * | 1994-09-29 | 1996-04-04 | Smg Sueddeutsche Maschinenbau | Verfahren und Vorrichtung zum Umformen von Metallblech |
DE19535870C2 (de) * | 1995-07-24 | 2002-07-11 | Blz Gmbh | Verfahren zum Herstellen von schalenförmigen Hohlstrukturen aus gedoppelten Blechzuschnitten mittels Innenhochdruckumformen |
-
1996
- 1996-12-02 DE DE19649629A patent/DE19649629C2/de not_active Expired - Fee Related
-
1997
- 1997-11-29 AT AT97121023T patent/ATE236745T1/de not_active IP Right Cessation
- 1997-11-29 DE DE59709768T patent/DE59709768D1/de not_active Expired - Fee Related
- 1997-11-29 ES ES97121023T patent/ES2196244T3/es not_active Expired - Lifetime
- 1997-11-29 EP EP97121023A patent/EP0845312B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59709768D1 (de) | 2003-05-15 |
DE19649629C2 (de) | 1999-01-07 |
ES2196244T3 (es) | 2003-12-16 |
EP0845312A1 (de) | 1998-06-03 |
ATE236745T1 (de) | 2003-04-15 |
DE19649629A1 (de) | 1998-06-04 |
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