DE10248800A1 - Internal pressure-loaded component and method for producing an internal pressure-loaded component with a non-cylindrical cross section - Google Patents

Internal pressure-loaded component and method for producing an internal pressure-loaded component with a non-cylindrical cross section Download PDF

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Publication number
DE10248800A1
DE10248800A1 DE2002148800 DE10248800A DE10248800A1 DE 10248800 A1 DE10248800 A1 DE 10248800A1 DE 2002148800 DE2002148800 DE 2002148800 DE 10248800 A DE10248800 A DE 10248800A DE 10248800 A1 DE10248800 A1 DE 10248800A1
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Germany
Prior art keywords
internal pressure
section
component
cross
longitudinal bore
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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.)
Withdrawn
Application number
DE2002148800
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German (de)
Inventor
Manfred Wilhelm
Wilhelm Hopf
Dieter Holz
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Robert Bosch GmbH
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Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE2002148800 priority Critical patent/DE10248800A1/en
Priority to EP03015167A priority patent/EP1411237A1/en
Priority to JP2003353851A priority patent/JP2004138061A/en
Publication of DE10248800A1 publication Critical patent/DE10248800A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/155—Making tubes with non circular section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/16—Remodelling hollow bodies with respect to the shape of the cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Die Erfindung bezieht sich auf ein innendruckbelastetes Bauteil, insbesondere für Kraftstoffeinspritzsysteme, bestehend aus einem langgestreckten rohrartigen Körper. Dieser langgestreckte rohrartige Körper weist einen zunächst durch Tieflochbohrung hergestellten zylindrischen Querschnitt auf. DOLLAR A Durch Einwirkung von äußeren Kräften auf das insbesondere geschmiedete Bauteil (1) wird eine plastische Verformung des Bauteils erreicht, so dass der an sich kreisrunde Querschnitt der Längsbohrung (6) elliptisch ausgebildet wird.The invention relates to an internal pressure-loaded component, in particular for fuel injection systems, consisting of an elongated tubular body. This elongated tubular body has a cylindrical cross section initially produced by deep hole drilling. DOLLAR A A plastic deformation of the component is achieved by the action of external forces on the forged component (1), so that the circular cross section of the longitudinal bore (6) is elliptical.

Description

Die Erfindung betrifft ein innendruckbelastetes Bauteil, insbesondere für Kraftstoff-Einspritzsysteme, bestehend aus einem langgestreckten rohrartigen Körper mit einer Längsbohrung sowie mindestens einer Querbohrung mit Anschlussteilen zur Zu- und Abfuhr.The invention relates to an internal pressure Component, especially for Fuel injection systems consisting of an elongated tubular body with a longitudinal bore and at least one cross hole with connecting parts for the inlet and Removal.

Insbesondere bei sogenannten Speichereinspritzungen (Common Rail), die im Bereich der Einspritztechnik von Kraftstoffen bei Brennkraftmaschinen bzw. Verbrennungsmotoren verwendet werden, sind insbesondere innendruckbelastete Bauteile notwendig. Hier werden solche Bauteile für Hochdruckspeicher (Rail) und Injektoren verwendet.Especially with so-called accumulator injections (Common Rail) operating in the field of fuel injection technology are used in internal combustion engines or internal combustion engines in particular, components subject to internal pressure are necessary. Be here such components for High pressure accumulator (rail) and injectors used.

Diese Bauteile eignen sich insbesondere für Kraftstoff-Einspritzsysteme und diese stehen nicht nur unter sehr hohem Innendruck, sondern sind darüber hinaus periodisch starken Schwankungen des Innendrucks unterworfen. Daher müssen solche Bauteile entsprechend hohe Festigkeitsanforderungen erfüllen. Insbesondere kommt es in erster Linie auf die Festigkeit an den Verschneidungen von Längs- und Querbohrung an.These components are particularly suitable for fuel injection systems and these are not only under very high internal pressure, but are about it periodically subject to strong fluctuations in internal pressure. Therefore must such components meet correspondingly high strength requirements. In particular it is primarily the strength of the intersections from longitudinal and cross hole.

Aufgabe der Erfindung ist es, eine weitere Erhöhung der Festigkeit insbesondere im Bereich der Bohrungsverschneidungen zu schaffen.The object of the invention is a further increase the strength especially in the area of the intersection of holes to accomplish.

Lösung der AufgabeSolution of task

Das Lösungsprinzip der Aufgabe besteht darin, anstelle eines herkömmlich aus dem Stand der Technik bekannten zylindrischen Querschnitts einen nichtzylindrischen Querschnitt für die Längsbohrung zu verwenden und ein Verfahren über plastische Deformation anzuwenden, um einen solchen Querschnitt herzustellen.The solution principle of the task exists in it, instead of a conventional one a non-cylindrical cylindrical cross section known from the prior art Cross section for the longitudinal bore use and a procedure about plastic deformation to apply such a cross section manufacture.

Vorteile der ErfindungAdvantages of invention

Ein wesentlicher Vorteil der Erfindung besteht darin, dass insbesondere bei geschmiedeten innendruckbelasteten Bauteilen, bei denen die Anschlüsse mit den Querbohrungen an den langgestreckten Körper angeschmiedet sind, derart zu verformen, dass aus dem an sich durch Tieflochbohrung hergestellten zylindrischen Querschnitt der Längsbohrung ein nichtzylindrischer Querschnitt entsteht.A major advantage of the invention is that, especially for forged internal pressure loads Components where the connections are forged with the transverse bores on the elongated body, such to deform that from the per se manufactured by deep hole cylindrical cross section of the longitudinal bore a non-cylindrical cross section is created.

Insbesondere durch geeignete Auflagen (Ebene oder V-förmige Auflage) kann erreicht werden, dass beispielsweise ein elliptischer Querschnitt entsteht, wobei im Verschneidungsbereich ebenfalls nicht zylindrische Querschnitte entstehen und so Lastspannungen, die insbesondere in diesen Bereichen aufgrund der hohen Drücke entstehen, minimiert werden. Zur einfachen Herstellung eines solchen innendruckbelasteten Bauteils ist vorgesehen, dass Bauteil entweder partiell oder auch in seiner Gesamtheit zu erwärmen, um so ein Anstauchen auf einfache Art und Weise zu ermöglichen.In particular through suitable conditions (level or V-shaped Edition) can be achieved, for example, an elliptical Cross section arises, but also not in the intersection area cylindrical cross sections arise and so load voltages, in particular in these areas due to the high pressures that arise are minimized. For the simple manufacture of such a component subject to internal pressure it is intended that the component either partially or in its To warm the whole in order to enable such an upsetting in a simple manner.

Weitere Vorteile gehen aus der nachfolgenden Beschreibung, den Ansprüchen sowie den Zeichnungen hervor.Further advantages come from the following Description, the claims as well as the drawings.

Es zeigen:Show it:

1 Ein erstes Ausführungsbeispiel eines Verfahrensschritts zur Herstellung einer im Querschnitt nicht zylindrischen Längsbohrung. 1 A first exemplary embodiment of a method step for producing a longitudinal bore that is not cylindrical in cross section.

2 Ein weiteres Ausführungsbeispiel eines Herstellungsschrittes zur Herstellung eines Bauteils mit einem nicht zylindrischen Querschnitt; 2 Another embodiment of a manufacturing step for manufacturing a component with a non-cylindrical cross section;

3A–G Eine skizzenartige Darstellung von verschiedenen Anstauchmöglichkeiten eines Common Rails. 3A-G A sketch-like representation of different options for upsetting a common rail.

Beschreibung der Ausführungsbeispieledescription of the embodiments

In 1 ist ein innendruckbelastetes Bauteil 1 in Form eines Common Rails dargestellt. Dieses Bauteil 1 weist eine Außenkontur 2 auf, und ein an der Außenkontur anschließendes Anschlussteil 3. Dieses Anschlussteil 3 weist zusätzlich eine Querbohrung 4 auf, die in einem Verschneidungsbereich 5 mit der innerhalb des innendruckbelasteten Bauteils angeordneten Längsbohrung korrespondiert.In 1 is a component subject to internal pressure 1 shown in the form of a common rail. This component 1 has an outer contour 2 on, and a connecting part adjoining the outer contour 3 , This connector 3 also has a cross hole 4 on that in an intersection area 5 corresponds to the longitudinal bore arranged inside the component subjected to internal pressure.

Die Längsbohrung 6 weist in ihrem ursprünglichen (in der Zeichnung nicht dargestellten) Zustand einen kreisrunden, zylindrischen Querschnitt auf.The longitudinal bore 6 has a circular, cylindrical cross section in its original state (not shown in the drawing).

Zur Herstellung des in der Zeichnung dargestellten elliptischen Querschnitts wird das innendruckbelastete Bauteil vorzugsweise als ganzes vollständig erwärmt und auf eine Ebene 7 gestützt, gegen die eine Kraft F drückt. Durch dieses Anstauchen mittels der Kraft F wird bewirkt, dass die Außenkontur des innendruckbelasteten Bauteils sich in die Richtung R1 und R2 ausdehnt und so auch der entsprechend zylindrische Querschnitt der Längsbohrung 6 sich in Abhängigkeit der Größe der Kraft F elliptisch ausbildet.To produce the elliptical cross section shown in the drawing, the internal pressure-loaded component is preferably completely heated as a whole and on one level 7 supported against which a force F presses. This upsetting by means of the force F has the effect that the outer contour of the component subjected to internal pressure expands in the directions R1 and R2 and thus also the corresponding cylindrical cross section of the longitudinal bore 6 forms elliptically depending on the size of the force F

Bei dem in 2 dargestellten Ausführungsbeispiel wird anstelle einer ebenen Fläche 7 eine V-förmige ausgebildete Gegenfläche 7' verwendet. Diese bewirkt, dass der in 2 dargestellte elliptische Querschnitt der Längsbohrung 6 entsteht und die Außenkontur 2 sich ebenfalls entsprechend der V-förmigen Ausbildung der Fläche 7' ausbildet.At the in 2 illustrated embodiment is instead of a flat surface 7 a V-shaped counter surface 7 ' used. This causes the in 2 illustrated elliptical cross section of the longitudinal bore 6 arises and the outer contour 2 also corresponding to the V-shaped formation of the surface 7 ' formed.

In den 3A–G sind unterschiedliche Möglichkeiten der plastischen Verformung dargestellt.In the 3A-G different possibilities of plastic deformation are shown.

Durch einen einfachen Anstauchvorgang (plastische Verformung), insbesondere bei geschmiedeten Bauteilen, kann ein optimaler Querschnitt der Längsbohrung insbesondere im Verschneidungsbereich erzielt werden.Through a simple upsetting process (plastic deformation), especially with forged components, an optimal cross-section of the longitudinal bore can be achieved, especially in the ver intersection can be achieved.

Claims (6)

Innendruckbelastetes Bauteil, insbesondere für Kraftstoffeinspritzsysteme, bestehend aus einem langgestreckten rohrartigen Körper mit einer Längsbohrung sowie mindestens einer Querbohrung mit einem Anschlussteil zur Zu- und Abfuhr, dadurch gekennzeichnet, dass die Längsbohrung (6) und die Außenkontur (2) des innendruckbelasteten Bauteils (1) einen nicht-zylindrischen Querschnitt aufweist.Component subject to internal pressure, in particular for fuel injection systems, consisting of an elongated tubular body with a longitudinal bore and at least one transverse bore with a connecting part for supply and discharge, characterized in that the longitudinal bore ( 6 ) and the outer contour ( 2 ) of the component under internal pressure ( 1 ) has a non-cylindrical cross section. Bauteil nach Anspruch 1, dadurch gekennzeichnet, dass im Verschneidungsbereich (5) die Längsbohrung (6) abgeflacht ist.Component according to claim 1, characterized in that in the intersection area ( 5 ) the longitudinal bore ( 6 ) is flattened. Verfahren zur Herstellung eines innendruckbelasteten Bauteils, insbesondere für Kraftstoffeinspritzsysteme, bestehend aus einem langgestreckten rohrartigen Körper mit einer Längsbohrung sowie mindestens einer Querbohrung mit einem Anschlussteil zur Zu- und Abfuhr, gekennzeichnet durch folgenden Verfahrensschritt: Druckaufgabe auf die Außenkontur (2) des Bauteils (1) gegen eine Fläche (7, 7'), wobei aus der zunächst im Querschnitt zylindrischen Längsbohrung (6) ein nicht zylindrischer Querschnitt entsteht.Process for the production of a component subject to internal pressure, in particular for fuel injection systems, consisting of an elongated tubular body with a longitudinal bore and at least one transverse bore with a connecting part for supply and discharge, characterized by the following process step: pressure application to the outer contour ( 2 ) of the component ( 1 ) against a surface ( 7 . 7 ' ), whereby the longitudinal bore (initially cylindrical in cross section) 6 ) a non-cylindrical cross section is created. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Druckaufgabe auf das Anschlussteil (3) erfolgt.A method according to claim 3, characterized in that the printing task on the connecting part ( 3 ) he follows. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Druckaufgabe gegenüber einer im Querschnitt ebenen Fläche (7) erfolgt.A method according to claim 3 or 4, characterized in that the printing task compared to a flat surface in cross section ( 7 ) he follows. Verfahrens nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass die Druckaufgabe gegenüber einer im Querschnitt V-förmigen Fläche (7') ausgeübt wird.Method according to one of claims 3 or 4, characterized in that the printing task compared to a cross-sectionally V-shaped surface ( 7 ' ) is exercised.
DE2002148800 2002-10-19 2002-10-19 Internal pressure-loaded component and method for producing an internal pressure-loaded component with a non-cylindrical cross section Withdrawn DE10248800A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2002148800 DE10248800A1 (en) 2002-10-19 2002-10-19 Internal pressure-loaded component and method for producing an internal pressure-loaded component with a non-cylindrical cross section
EP03015167A EP1411237A1 (en) 2002-10-19 2003-07-04 Internal pressure loaded element having non-cylindrical cross section and method for its production
JP2003353851A JP2004138061A (en) 2002-10-19 2003-10-14 Component to be loaded under internal pressure, and method for manufacturing the component loaded under internal pressure having non-cylindrical cross section

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2002148800 DE10248800A1 (en) 2002-10-19 2002-10-19 Internal pressure-loaded component and method for producing an internal pressure-loaded component with a non-cylindrical cross section

Publications (1)

Publication Number Publication Date
DE10248800A1 true DE10248800A1 (en) 2004-04-29

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EP (1) EP1411237A1 (en)
JP (1) JP2004138061A (en)
DE (1) DE10248800A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2392816B1 (en) * 2010-06-03 2013-10-09 Delphi Technologies Holding S.à.r.l. Stress Relief in Pressurized Fluid Flow System
DE102012106585A1 (en) * 2012-07-20 2014-01-23 Benteler Automobiltechnik Gmbh Method for producing a high-pressure fuel line

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3841370B2 (en) * 1996-12-07 2006-11-01 臼井国際産業株式会社 Common rail
JP3916176B2 (en) * 1997-01-14 2007-05-16 臼井国際産業株式会社 Common rail
JPH10318084A (en) * 1997-03-03 1998-12-02 Usui Internatl Ind Co Ltd Slider incorporated type member having branch hole for high pressure fluid
DE19913793A1 (en) * 1999-03-26 2000-10-19 Daimler Chrysler Ag Procedure for manufacture of HP pipe distributing fuel to injectors of internal combustion engine entails attachment of nipples by friction welding to main pipe, with main pipe and nipples made of high strength non-rusting material
DE19937444C1 (en) * 1999-08-07 2001-01-18 Winkelmann & Pannhoff Gmbh Fuel distribution device for i.c. engine fuel injection system has fuel injection valves fitted directly to fuel distribution line via connection elements fitted to fuel distribution openings along fuel distribution line
DE19948339C1 (en) * 1999-10-07 2000-12-14 Bosch Gmbh Robert High pressure fuel reservoir for common-rail fuel injection system for i.c. engine provided by hollow tubular body with its interiror space provided by coupled or overlapping cylindrical recesses
JP2001295723A (en) * 2000-04-13 2001-10-26 Denso Corp Pressure accumulation type fuel injection device
DE10056405B4 (en) * 2000-11-14 2005-06-16 Robert Bosch Gmbh High-pressure fuel accumulator for a fuel injection system for internal combustion engines
DE10123234A1 (en) * 2001-05-12 2002-11-28 Bosch Gmbh Robert High pressure fuel accumulator for a common rail fuel injection system of an internal combustion engine comprises an accumulator chamber and a base body having a cylindrical, elliptical or polygonal cross-section
DE10140058A1 (en) * 2001-08-16 2002-10-24 Bosch Gmbh Robert High pressure fuel storage-container has basic body with lengthwise and transverse hollow cavities, connecting support, and inner storage chamber

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Publication number Publication date
JP2004138061A (en) 2004-05-13
EP1411237A1 (en) 2004-04-21

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