DE10332509B3 - Production of a workpiece provided with holes comprises a perforating process during which a pump separate to a fluid high pressure producing system partly delivers a pressurized fluid - Google Patents
Production of a workpiece provided with holes comprises a perforating process during which a pump separate to a fluid high pressure producing system partly delivers a pressurized fluid Download PDFInfo
- Publication number
- DE10332509B3 DE10332509B3 DE2003132509 DE10332509A DE10332509B3 DE 10332509 B3 DE10332509 B3 DE 10332509B3 DE 2003132509 DE2003132509 DE 2003132509 DE 10332509 A DE10332509 A DE 10332509A DE 10332509 B3 DE10332509 B3 DE 10332509B3
- Authority
- DE
- Germany
- Prior art keywords
- fluid
- pressure
- workpiece
- high pressure
- pressurized fluid
- 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 - Fee Related
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
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
-
- 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
-
- 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
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
Die Erfindung betrifft ein Verfahren zur Herstellung eines mit Löchern versehenen Werkstücks gemäß dem Oberbegriff des Patentanspruches 1 und eine Vorrichtung zu dieser Herstellung gemäß dem Oberbegriff des Patentanspruches 4.The invention relates to a method for making one with holes provided workpiece according to the preamble of claim 1 and an apparatus for this production according to the generic term of claim 4.
Eine gattungsgemäße Vorrichtung bzw. ein gattungsgemäßes Verfahren
ist aus der
Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Verfahren bzw. eine gattungsgemäße Vorrichtung dahingehend weiterzubilden, dass die Prozesssicherheit des Lochvorganges an einem Werkstück bei der Erzeugung von mindestens zwei Löchern gewährleistet wird.The invention is based on the object generic method or a generic device in such a way that the process reliability of the hole process on a workpiece is ensured in the production of at least two holes.
Die Aufgabe ist erfindungsgemäß durch die Merkmale des Patentanspruches 1 hinsichtlich des Verfahrens und durch die Merkmale des Patentanspruches 4 hinsichtlich der Vorrichtung gelöst.The object is achieved by the features of claim 1 with regard to the method and by the features of claim 4 with respect to the device solved.
Aufgrund dessen, dass für den Lochvorgang an die Zuführung des Druckfluids eine Hochleistungspumpe angekoppelt wird, welche im Gegensatz zur Fluidhochdruckerzeugungsanlage, durch die angesichts von der ihr erzeugten hohen Drücke nur sehr kleine Druckfluidvolumina förderbar sind, erheblich größere Druckfluidvolumina bei etwas niederem Druck bereitgestellt werden können. Hierbei ist es möglich, mittels der Hochleistungspumpe genau das Quantum an Druckfluid nachzuführen, das beim Lochen als Leckage dem Umformwerkzeug verlustig geht. Bei der Ankopplung der Hochleistungspumpe ist es sowohl denkbar, dass sie während des gesamten Lochvorganges alleine das Druckfluid fördert, wobei in diesem Fall die Fluidhochdruckerzeugungsanlage ihren Dienst einstellt, als auch bei im Lochvorgang weiterarbeitender Fluidhochdruckerzeugungsanlage die Hochleistungspumpe zusätzlich noch zugeschaltet werden kann. Da durch die Hochleistungspumpe während des Lochvorganges die Füllung des Formraumes mit Druckfluid in ausreichendem Maße sichergestellt ist und somit von der Befüllungsmenge her kein Unterschied zwischen deren Ausformphase des Werkstücks und seiner anschließenden Lochung besteht, bleibt die beim Lochen des ersten Loches noch hohe Abstützkraft auch bei der Erzeugung weiterer Löcher nahezu unvermindert. Dadurch wird eine hohe Prozesssicherheit des Lochvorganges an dem Werkstück und damit des gesamten Herstellungsprozesses erreicht, wobei nahezu beliebig viele Löcher erzeugt werden können, ohne die Prozesssicherheit zu gefährden. Dies gilt in gleichem Maße für eine sequentielle Lochung als auch für eine gleichzeitige Erzeugung mehrerer Löcher. Für den Lochvorgang ist es unerheblich, ob die Lochstempel das Werkstück schneidend beaufschlagen und den entstehenden Lochbutzen entgegen der Wirkungsrichtung des Druckfluids aus dem Werkstück herauslösen, was zu einem von Außen- nach Innenlochen führt, oder ob der Lochbutzen durch sehr schnelles Zurückziehen der Lochstempel in ihren Führungsbohrungen aus dem Werkstück nach außen herausgerissen wird, was dem von Innen- nach Außenlochen unterfällt. Der Lochvorgang sollte auf jeden Fall mit möglichst hoher Geschwindigkeit durchgeführt werden, um einen hohen Sprödbruchanteil und eine gute Schnittflächenqualität zu erzielen. Gegebenenfalls ist es zusätzlich denkbar, dass die Hochleistungspumpe ersatzweise auch die Ausformung des Werkstückes übernimmt, wobei dünnwandige oder aus Aluminium und ähnlichen Werkstoffen bestehende Werkstücke zu favorisieren wären.Because of that for the hole process the feeder the pressure fluid is coupled to a high-performance pump, which in contrast to the fluid high-pressure generating plant, by the view from the high pressures it generates only very small volumes of pressurized fluid can be conveyed, significantly larger volumes of pressurized fluid can be provided at a slightly lower pressure. It is possible by means of the high-performance pump to track exactly the quantum of pressurized fluid, the when punching as loss of the forming tool is lost. In the Coupling the high-performance pump, it is both conceivable that they while the entire hole process alone promotes the pressurized fluid, wherein in this case, the high-pressure fluid power plant ceases to operate, as well as in further working in the hole process fluid high pressure generating plant the high-performance pump in addition can still be switched on. Because of the high performance pump during the Hole process the filling the mold cavity with pressurized fluid sufficiently ensured is and thus of the filling quantity ago no difference between their molding phase of the workpiece and his subsequent Perforation, the hole still remains high when punching the first hole support force also with the production of further holes almost undiminished. Thereby is a high process reliability of the hole process on the workpiece and thus achieved throughout the manufacturing process, with almost arbitrary many holes can be generated without endangering process safety. This applies in the same Dimensions for a sequential Punching as well a simultaneous creation of several holes. For the hole process, it is irrelevant whether the punches the workpiece act on cutting and contrary to the resulting Lochbutzen the direction of action of the pressure fluid out of the workpiece, what to one of foreign leads to inner holes, or whether the Lochbutzen by very fast retraction of the punches in their pilot holes from the workpiece outward is torn out, which falls from the inside to outside holes. Of the Punching should be done in any case with the highest possible speed, by a high fraction of brittle fracture and to achieve a good cut surface quality. If necessary it is additional conceivable that the high-performance pump, as a substitute, the shaping of the workpiece, being thin-walled or aluminum and similar Materials consisting of workpieces would be to favor.
In einer bevorzugten Weiterbildung der Erfindung nach Anspruch 2 bzw. Anspruch 5 wird ein Teil des Druckfluidvolumens von einem Blasenspeicher und/oder einem Kolbenspeicher zugeführt. Diese sind an die Leitung der Hochleistungspumpe angeschlossen und dienen deren Entlastung während des Lochvorganges. Die Leitung der Pumpe ist dabei der Zuführung des Druckfluids angeschlossen.In a preferred embodiment The invention according to claim 2 or claim 5 is a part of Pressure fluid volume of a bladder accumulator and / or a piston accumulator fed. These are connected to the line of the high-performance pump and serve their relief during the hole process. The line of the pump is the supply of the Pressure fluid connected.
In einer besonders bevorzugten Ausgestaltung des erfindungsgemäßen Verfahrens nach Anspruch 3 wird das Werkstück sequentiell gelocht, wobei die schon entstandenen Löcher mittels der Lochstempel bis zum Abschluss des gesamten Lochvorgangs verschlossen werden. Dadurch wird die zwischen den Lochstempeln und den Lochwandungen entstehende Leckage erheblich reduziert, so dass die Hochleistungspumpe in ihrer Dimensionierung und ihrem Leistungsvermögen kleiner gestaltet werden kann. Die Lochstempel bewegen sich erst am Ende des Gesamtlochvorganges aus dem Loch heraus.In a particularly preferred embodiment of the inventive method according to claim 3, the workpiece is perforated sequentially, the holes already formed are closed by means of the punch until the completion of the entire perforation process. As a result, the resulting leakage between the punch punches and the hole walls is significantly reduced, so that the high-performance pump in their dimensions and their performance can be made smaller. The punches only move out of the hole at the end of the complete hole process.
In einer weiteren bevorzugten Weiterbildung der erfindungsgemäßen Vorrichtung nach Anspruch 6 ist die Hochleistungspumpe zum Lochvorgang an die mit der Fluidhochdruckerzeugungsanlage verbundene Druckfluidzuführung ankoppelbar. Hierbei wird der bereits bestehende Fluidweg im Axialstempel genutzt, was zu einer bauraumsparenden Kompaktierung und Vereinfachung der Vorrichtung führt.In a further preferred embodiment of Device according to the invention According to claim 6, the high-performance pump for punching the be connected to the fluid high pressure generating system connected pressure fluid supply. Here, the already existing fluid path is used in Axialstempel, what a space-saving compaction and simplification of Device leads.
Im Folgenden ist die Erfindung anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Dabei zeigt:The invention is based on the following an embodiment illustrated in the drawings explained in more detail. there shows:
In
In
Zur Herstellung des Werkstücks
Im Falle der Verwendung von Werkstoffen, wie Aluminium, oder Legierung mit ähnlicher Streckgrenze und Duktilität bietet z. B. Messing bzw. von Legierungen, die vom Formänderungs- und Verfestigungsverhalten verwandt sind, kann die Druckfluiderzeugungsanlage mit ihrem Druckübersetzer vollständig abgekoppelt sein und die Zuführung des Druckfluids allein durch die Hochleistungspumpe übernommen werden, so dass diese nicht nur das Druckfluid für den Lochvorgang, sondern auch für den gesamten Ausformungsvorgang bereitstellt.In the case of using materials, such as Aluminum, or alloy with similar Yield strength and ductility offers z. As brass or alloys, the and solidification behavior are related, the pressure fluid generation plant with her pressure intensifier Completed be disconnected and the feeder taken over the pressure fluid alone by the high-performance pump so that these are not just the pressurized fluid for the hole process, but also for provides the entire molding process.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003132509 DE10332509B3 (en) | 2003-07-17 | 2003-07-17 | Production of a workpiece provided with holes comprises a perforating process during which a pump separate to a fluid high pressure producing system partly delivers a pressurized fluid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003132509 DE10332509B3 (en) | 2003-07-17 | 2003-07-17 | Production of a workpiece provided with holes comprises a perforating process during which a pump separate to a fluid high pressure producing system partly delivers a pressurized fluid |
Publications (1)
Publication Number | Publication Date |
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DE10332509B3 true DE10332509B3 (en) | 2004-09-02 |
Family
ID=32798201
Family Applications (1)
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DE2003132509 Expired - Fee Related DE10332509B3 (en) | 2003-07-17 | 2003-07-17 | Production of a workpiece provided with holes comprises a perforating process during which a pump separate to a fluid high pressure producing system partly delivers a pressurized fluid |
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DE (1) | DE10332509B3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109404371A (en) * | 2018-06-28 | 2019-03-01 | 吉林省正轩车架有限公司 | A kind of hydraulic system can be shortened interior high-pressure molding process cycle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19649629A1 (en) * | 1996-12-02 | 1998-06-04 | Forschungsges Umformtechnik | Flexible tool for hydroforming |
-
2003
- 2003-07-17 DE DE2003132509 patent/DE10332509B3/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19649629A1 (en) * | 1996-12-02 | 1998-06-04 | Forschungsges Umformtechnik | Flexible tool for hydroforming |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109404371A (en) * | 2018-06-28 | 2019-03-01 | 吉林省正轩车架有限公司 | A kind of hydraulic system can be shortened interior high-pressure molding process cycle |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
8339 | Ceased/non-payment of the annual fee |