DE102007043316B4 - Method and device for producing a bulge-containing workpiece by means of a pressure medium - Google Patents
Method and device for producing a bulge-containing workpiece by means of a pressure medium Download PDFInfo
- Publication number
- DE102007043316B4 DE102007043316B4 DE102007043316A DE102007043316A DE102007043316B4 DE 102007043316 B4 DE102007043316 B4 DE 102007043316B4 DE 102007043316 A DE102007043316 A DE 102007043316A DE 102007043316 A DE102007043316 A DE 102007043316A DE 102007043316 B4 DE102007043316 B4 DE 102007043316B4
- Authority
- DE
- Germany
- Prior art keywords
- workpiece
- tool
- halves
- base plate
- pressure medium
- 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.)
- Active
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
- 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
- B21D26/047—Mould construction
-
- 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
- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
- B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Aus
der
Nachteilig bei dieser Lösung ist, dass die Befüllung des Werkstückhohlraumes mit dem Druckmedium als eigenständiger, die Taktzeit erhöhender Vorgang erst nach dem Einlegen des Werkstückes in das Werkzeug erfolgen kann, wobei sich die Enden des Werkstückes durch Zusammenfahren der Werkzeughälften bereits in ihrer Dichtposition in der Ausnehmung der Werkzeughälften befinden müssen. Dabei besteht die Gefahr, dass das Werkstück ausknickt und in der Teilungsebene zwischen den Werkzeughälften zu liegen kommt. Außerdem ist ein serienstabiles Einlegen der Werkstücke nicht gewährleistet, da die Konen allein nicht ausreichend zur orthogonalen Führung des Werkstückes beitragen. Letztlich bereitet die Entnahme der Werkstücke Schwierigkeiten dahingehend, weil sich diese in der Ausnehmung einer der beiden Werkzeughälften verklemmen können. Zur Erhöhung des Innendruckes ist für die direkte Druckbeaufschlagung ein Druckübersetzer notwendig.adversely in this solution is that filling of the workpiece cavity with the print medium as an independent, the tact time increasing Operation only after inserting the workpiece into the tool can, with the ends of the workpiece by moving the mold halves already in their sealing position in the recess of the tool halves have to. there there is a risk that the workpiece will buckle and in the parting plane between the tool halves to come to rest. Furthermore is a series-steady insertion of the workpieces not guaranteed, because the cones alone are not sufficient for the orthogonal leadership of the workpiece contribute. Ultimately, the removal of the workpieces is difficult to the effect that they are in the recess of one of the two mold halves can get stuck. To increase the internal pressure is for the direct pressurization of a pressure booster necessary.
Weiterhin ist ein gattungsgemäßes Verfahren und eine ebensolche Vorrichtung bekannt. Der Nachteil dieser Lösung ist darin zu sehen, dass eine strikte Trennung zwischen den Arbeitsschritten Befüllen, Dichten und Umformen besteht. Dabei dient das im Werkstück befindliche Druckmedium nicht explizit der Umformung infolge einer Volumenreduzierung durch eine gezielte Stempelbewegung, sondern die Stempel dringen zunächst in das Innere des rohrförmigen Werkstücks bis zum Erreichen der Dichtposition ein, nachfolgend erzeugt ein zusätzlicher, axial verfahrbarer Kolben den erforderlichen Umformdruck durch Verdrängung des Druckmediums, in dem dieser in den Innenraum des Werkstücks gedrückt wird. Damit erfolgt die für die Umformung des Werkstückes erforderliche Innendruckerhöhung von Außen, wozu eine separate Baugruppe erforderlich ist. Außerdem erfolgt keinerlei Relativbewegung zwischen Stempel und Werkstück, so dass die Funktionsbewegungen unabhängig voneinander und zeitlich nacheinander stattfinden. Zusätzlich ist das Umformwerkzeug entlang der Längsachse der Werkstücks geteilt ausgestaltet.Farther is a generic process and a similar device known. The disadvantage of this solution is to see that there is a strict separation between the work steps Fill, Dense and reshape exists. The workpiece is located in the workpiece Pressure medium not explicitly the transformation due to a volume reduction by a targeted stamp movement, but the stamp penetrate first in the interior of the tubular workpiece until reaching the sealing position, subsequently generates additional, axially movable piston the required forming pressure by displacement of the Pressure medium in which this is pressed into the interior of the workpiece. In order to takes place for the deformation of the workpiece required Internal pressure increase from the outside, what a separate assembly is required. Also done no relative movement between the punch and the workpiece, so that the functional movements independent take place one after the other and in chronological order. In addition is the forming tool along the longitudinal axis the workpiece divided designed.
Die Aufgabe der Erfindung besteht darin, eine Lösung vorzuschlagen, bei der die Realisierung der Dichtposition an den Enden des mit dem Druckmedium befüllten Hohlraumes des Werkstückes als separater, die Taktzeit erhöhender Vorgang verzichtet werden kann. Außerdem sollen ein Ausknicken des Werkstückes ausgeschlossen, die Voraussetzungen für ein serienstabiles Einlegen des Werkstückes geschaffen und die problemlose Entnahme des Werkstückes ermöglicht werden. Letztlich soll auf die Verwendung einer sich durch den Stempel erstreckenden Baugruppe für die erforderliche Druckerhöhung verzichtet werden können.The The object of the invention is to propose a solution in which the realization of the sealing position at the ends of the with the pressure medium filled Cavity of the workpiece as a separate one, increasing the cycle time Operation can be dispensed with. In addition, a buckling of the workpiece excluded, the requirements for a series-steady insertion of the workpiece created and the trouble-free removal of the workpiece are possible. Ultimately, the use of a extending through the punch Assembly for the required pressure increase can be dispensed with.
Diese Aufgabe wird bei einem gattungsgemäßen Verfahren mit den im Kennzeichen des Patentanspruchs 1 angegebenen Merkmalen gelöst.These Task is in a generic method with the license plate of the patent claim 1 specified features.
Eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens geht aus Patentanspruch 2 hervor, wobei deren vorteilhafte Weiterbildungen in den Patentansprüchen 3 bis 6 offenbart sind.A Apparatus for carrying out the method according to the invention is apparent from claim 2, wherein their advantageous developments in the claims 3 to 6 are disclosed.
Die Vorteile der Erfindung bestehen darin, dass auf die Realisierung der Dichtposition an den Enden des mit dem Druckmedium befüllten Hohlraumes des Werkstückes als separater, die Taktzeit erhöhender Vorgang verzichtet werden kann. Außerdem wird ein Ausknicken des Werkstückes ausgeschlossen, die Voraussetzungen für ein serienstabiles Einlegen des Werkstückes geschaffen und die problemlose Entnahme des Werkstückes ermöglicht. Weiterhin kann auf die Verwendung einer sich durch den Stempel erstreckenden Baugruppe für die erforderliche Druckerhöhung verzichtet werden, da die Druckerzeugung über die beim Stauchvorgang erfolgende Reduzierung des das Werkstück einschließenden Volumens und/oder durch das weitere Eindringen der Stempel in den Hohlraum des Werkstückes vorgenommen wird.The Advantages of the invention are that on the realization the sealing position at the ends of the filled with the pressure medium cavity of the workpiece as a separate one, increasing the cycle time Operation can be dispensed with. There will also be a buckling of the workpiece excluded, the requirements for a series-steady insertion of the workpiece created and allows easy removal of the workpiece. Farther may be due to the use of an extending through the stamp Assembly for the required pressure increase be dispensed with, since the pressure generation over the upsetting process successive reduction of the volume enclosing the workpiece and / or by the further penetration of the stamp in the cavity of the workpiece is made.
Die Erfindung soll nachfolgend an einem Ausführungsbeispiel und zugehöriger Zeichnungen näher erläutert werden.The Invention will be explained in more detail below with reference to an embodiment and associated drawings.
Es zeigen:It demonstrate:
In
der
Die
Werkzeuggrundplatten
Nachfolgend
soll die Funktionsweise des erfindungsgemäßen Verfahrens und der danach
arbeitenden Vorrichtung erläutert
werden:
Gemäß
According to
- 11
- Vorrichtungcontraption
- 22
- Ausbuchtungenbulges
- 33
- Werkstückworkpiece
- 44
- Längsachselongitudinal axis
- 55
- untere Werkzeughälftelower tool half
- 66
- obere Werkzeughälfteupper tool half
- 77
- Gravur/NegativformEngraving / negative shape
- 88th
- Distanzfederspacer spring
- 99
- untere Werkzeuggrundplattelower Tool base
- 1010
- obere Werkzeuggrundplatteupper Tool base
- 1111
- Druckmediumprint media
- 1212
- Behältercontainer
- 1313
- Hohlraumcavity
- 1414
- unterer Stempellower stamp
- 1515
- oberer Stempelupper stamp
- 1616
- Kanalchannel
- 1717
- Zu- und AblaufTo- and expiration
- 1818
- Verdrängungskanaldelivery channel
Claims (6)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007043316A DE102007043316B4 (en) | 2007-09-12 | 2007-09-12 | Method and device for producing a bulge-containing workpiece by means of a pressure medium |
AT08016051T ATE466675T1 (en) | 2007-09-12 | 2008-09-11 | METHOD AND DEVICE FOR PRODUCING A BULGED WORKPIECE USING A PRESSURE MEDIUM |
DE502008000612T DE502008000612D1 (en) | 2007-09-12 | 2008-09-11 | Method and device for producing a bulge-containing workpiece by means of a pressure medium |
EP08016051A EP2036628B1 (en) | 2007-09-12 | 2008-09-11 | Device and method for creating a workpiece with convexity using a pressure medium |
ES08016051T ES2345853T3 (en) | 2007-09-12 | 2008-09-11 | PROCEDURE AND DEVICE FOR MANUFACTURING A WORKPIECE GIVEN WITH CONVEXITIES WITH HELP OF A PRESSURE MEDIUM. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007043316A DE102007043316B4 (en) | 2007-09-12 | 2007-09-12 | Method and device for producing a bulge-containing workpiece by means of a pressure medium |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102007043316A1 DE102007043316A1 (en) | 2009-03-19 |
DE102007043316B4 true DE102007043316B4 (en) | 2009-08-20 |
Family
ID=40223746
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007043316A Active DE102007043316B4 (en) | 2007-09-12 | 2007-09-12 | Method and device for producing a bulge-containing workpiece by means of a pressure medium |
DE502008000612T Active DE502008000612D1 (en) | 2007-09-12 | 2008-09-11 | Method and device for producing a bulge-containing workpiece by means of a pressure medium |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE502008000612T Active DE502008000612D1 (en) | 2007-09-12 | 2008-09-11 | Method and device for producing a bulge-containing workpiece by means of a pressure medium |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2036628B1 (en) |
AT (1) | ATE466675T1 (en) |
DE (2) | DE102007043316B4 (en) |
ES (1) | ES2345853T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011052888A1 (en) * | 2011-08-22 | 2013-02-28 | Benteler Automobiltechnik Gmbh | Method for forming hollow profile in molded components for motor vehicle, involves inserting hollow profile into mold cavity of two-part forming tool, and shaping hollow profile by closing process of forming tool in section-wise manner |
DE102011116993B4 (en) | 2011-10-26 | 2024-07-25 | Cellcentric Gmbh & Co. Kg | Method and device for producing a metallic foil component, in particular a fuel cell component |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009030089B3 (en) * | 2009-06-22 | 2010-11-11 | Benteler Automobiltechnik Gmbh | Process for hydroforming |
CN102423784A (en) * | 2011-11-08 | 2012-04-25 | 哈尔滨工程大学 | Elastic medium-based expanding device and method for shape memory alloy pipe joint |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3625040A (en) * | 1969-08-06 | 1971-12-07 | Koppy Tool Corp | Method and apparatus for forming articles from a tubular blank |
DE4017072C2 (en) * | 1990-05-26 | 1992-03-12 | Benteler Ag, 4790 Paderborn, De | |
DE102005036419A1 (en) * | 2005-07-29 | 2007-02-01 | Tower Automotive Hydroforming Gmbh & Co. Kg | Production of a bulged hollow profile used as a gas generator housing for an airbag arrangement comprises placing a hollow profile into an inner high pressure deforming tool, flattening and further processing |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4337517A1 (en) * | 1993-11-03 | 1995-05-04 | Klaas Friedrich | Process for the hydroforming of hollow stepped shafts made of cold-formable metal |
US6128936A (en) * | 1998-09-09 | 2000-10-10 | Kabushiki Kaisha Opton | Bulging device and bulging method |
TWI267410B (en) * | 2002-11-08 | 2006-12-01 | Mitsubishi Motors Corp | Deformed element pipe for hydraulic bulging, hydraulic bulging device using the element pipe, hydraulic bulging method using the element pipe, and hydraulic-bulged product |
DE10357341B4 (en) * | 2003-12-09 | 2006-02-09 | Daimlerchrysler Ag | Apparatus and method for hydroforming a blank |
-
2007
- 2007-09-12 DE DE102007043316A patent/DE102007043316B4/en active Active
-
2008
- 2008-09-11 EP EP08016051A patent/EP2036628B1/en active Active
- 2008-09-11 ES ES08016051T patent/ES2345853T3/en active Active
- 2008-09-11 DE DE502008000612T patent/DE502008000612D1/en active Active
- 2008-09-11 AT AT08016051T patent/ATE466675T1/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3625040A (en) * | 1969-08-06 | 1971-12-07 | Koppy Tool Corp | Method and apparatus for forming articles from a tubular blank |
DE4017072C2 (en) * | 1990-05-26 | 1992-03-12 | Benteler Ag, 4790 Paderborn, De | |
DE102005036419A1 (en) * | 2005-07-29 | 2007-02-01 | Tower Automotive Hydroforming Gmbh & Co. Kg | Production of a bulged hollow profile used as a gas generator housing for an airbag arrangement comprises placing a hollow profile into an inner high pressure deforming tool, flattening and further processing |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011052888A1 (en) * | 2011-08-22 | 2013-02-28 | Benteler Automobiltechnik Gmbh | Method for forming hollow profile in molded components for motor vehicle, involves inserting hollow profile into mold cavity of two-part forming tool, and shaping hollow profile by closing process of forming tool in section-wise manner |
DE102011116993B4 (en) | 2011-10-26 | 2024-07-25 | Cellcentric Gmbh & Co. Kg | Method and device for producing a metallic foil component, in particular a fuel cell component |
Also Published As
Publication number | Publication date |
---|---|
ES2345853T3 (en) | 2010-10-04 |
ATE466675T1 (en) | 2010-05-15 |
DE502008000612D1 (en) | 2010-06-17 |
DE102007043316A1 (en) | 2009-03-19 |
EP2036628A1 (en) | 2009-03-18 |
EP2036628B1 (en) | 2010-05-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: FISCHER HYDROFORMING GMBH, 58706 MENDEN, DE |
|
R081 | Change of applicant/patentee |
Owner name: FISCHER HYDROFORMING GMBH, DE Free format text: FORMER OWNER: SCHULZE, BERND, DR.-ING., 09366 NIEDERDORF, DE Effective date: 20110214 |