DE102004012662B4 - Frame-shaped rear axle for a motor vehicle - Google Patents

Frame-shaped rear axle for a motor vehicle Download PDF

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Publication number
DE102004012662B4
DE102004012662B4 DE200410012662 DE102004012662A DE102004012662B4 DE 102004012662 B4 DE102004012662 B4 DE 102004012662B4 DE 200410012662 DE200410012662 DE 200410012662 DE 102004012662 A DE102004012662 A DE 102004012662A DE 102004012662 B4 DE102004012662 B4 DE 102004012662B4
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Germany
Prior art keywords
frame
motor vehicle
rear axle
axle
shaped rear
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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.)
Expired - Fee Related
Application number
DE200410012662
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German (de)
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DE102004012662A1 (en
Inventor
Christof Lischka
Nino Lailach
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE200410012662 priority Critical patent/DE102004012662B4/en
Publication of DE102004012662A1 publication Critical patent/DE102004012662A1/en
Application granted granted Critical
Publication of DE102004012662B4 publication Critical patent/DE102004012662B4/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

Rahmenförmiger Achsträger, insbesondere Hinterachsträger, für ein Kraftfahrzeug, im wesentlichen bestehend aus zwei Querträgern und zwei Längsträgern, die durch im wesentlichen geschlossene Hohlprofile mit einer Wandstärke in der Größenordnung von 3 mm bis 6 mm gebildet werden, und der aus einer Aluminiumlegierung einstückig in einem Kokillengießverfahren unter Verwendung zumindest eines verlorenen Kerns hergestellt ist.Frame-shaped axle, in particular rear axle, for a motor vehicle, consisting essentially of two cross beams and two longitudinal beams, which are formed by substantially closed hollow sections with a wall thickness in the order of 3 mm to 6 mm, and the one piece of aluminum alloy in a Kokillengießverfahren made using at least one lost core.

Description

Die Erfindung betrifft einen rahmenförmigen Achsträger, insbesondere einen Hinterachsträger, für ein Kraftfahrzeug, im wesentlichen bestehend aus zwei Querträgern und zwei Längsträgern, die durch im wesentlichen geschlossene Hohlprofile gebildet werden, wie er beispielshalber aus der DE 199 22 800 A1 bekannt ist.The invention relates to a frame-shaped axle, in particular a rear axle, for a motor vehicle, consisting essentially of two cross members and two longitudinal members, which are formed by substantially closed hollow sections, as he is from the example DE 199 22 800 A1 is known.

Bekannt sind verschiedene Bauarten von Fahrzeug-Achsträgern, die allgemein einen Hilfsrahmen bilden, und die einerseits eine ausreichende Festigkeit und andererseits ein möglichst geringes Gewicht aufweisen sollen. Aus diesem Grunde sind diese Achsträger vorzugsweise in Leichtmetall ausgeführt, wobei unterschiedliche Fertigungsweisen praktiziert werden. In der o. g. Schrift ist ein Hinterachsträger beschrieben, dessen Querträger und Längsträger durch längsnahtgeschweißte Rohre gebildet werden, die über sog. Guss-Knotenelemente miteinander verbunden sind. Wenngleich sich diese Bauart grundsätzlich bewährt hat, so ist der Herstellprozess doch mit einem gewissen Aufwand verbunden.Known are different types of vehicle axle beams, generally a subframe form, and on the one hand sufficient strength and on the other hand one possible should have low weight. That's why these are axle preferably made of light metal, with different Manufacturing methods are practiced. In the o. G. Scripture is a Hinterachsträger described, the cross member and side members through longitudinally welded pipes be formed over so-called cast node elements are interconnected. Although this type in principle proven has, so is the production process but with a certain effort connected.

Eine andere Bauart beschreibt die DE 195 81 700 T1 , wonach der Achsträger ein oberes und ein unteres Aluminiumgussbauteil umfasst, die fest miteinander verschraubt sind und dazwischen eine Hinterachsantriebseinheit fixieren. Auch hier erfordert der Zusammenbau der Einzelteile aufwändige Arbeitsschritte.Another type describes the DE 195 81 700 T1 according to which the axle carrier comprises an upper and a lower cast aluminum component, which are screwed tightly together and fix a Hinterachsantriebseinheit therebetween. Again, the assembly of the items requires elaborate steps.

Ferner ist aus der DE 101 53 272 A1 ein Druckguss-Hilfsrahmen zur Verwendung bei der Montage einer Fahrzeugkomponente an einer Fahrzeugkarosserie bekannt, wobei der Hilfsrahmen mit einer Druckgussmaschine hergestellt ist, in der ein Einlauf, mit dem Einlauf verbundene Verteiler und ein mit einem Verbindungsabschnitt des Verteilers verbundener Hohlraum ausgebildet sind, wobei der Hilfsrahmen einen Körperabschnitt und Lagerabschnitte, die an der Fahrzeugkomponente anzubringen sind, umfasst, wobei die Lagerabschnitte an dem Körperabschnitt vorgesehen sind und wobei die Lagerabschnitte jeweils entsprechend dem Verbindungsabschnitt angeordnet sind.Furthermore, from the DE 101 53 272 A1 a die-cast subframe for use in mounting a vehicle component to a vehicle body, wherein the subframe is made with a die casting machine having an inlet, manifolds connected to the inlet, and a cavity connected to a connecting portion of the manifold, the subframe a body portion and bearing portions to be attached to the vehicle component, wherein the bearing portions are provided on the body portion and wherein the bearing portions are respectively arranged corresponding to the connecting portion.

Hiermit soll nun ein vorteilhafter und einfach herstellbarer rahmenförmiger Achsträger, im wesentlichen bestehend aus zwei Querträgern und zwei Längsträgern, aufgezeigt werden (= Aufgabe der vorliegenden Erfindung).Herewith should now be an advantageous and easy to produce frame-shaped axle, in consisting essentially of two cross members and two side members, shown be (= object of the present invention).

Zur Lösung dieser Aufgabe wird ein rahmenförmiger Achsträger mit zwei Querträgern und zwei Längsträgern, die durch im wesentlichen geschlossene Hohlprofile mit einer Wandstärke in der Größenordnung von 3 mm bis 6 mm gebildet werden, vorgeschlagen, der aus einer Aluminiumlegierung einstückig in einem Kokillengießverfahren unter Verwendung zumindest eines verlorenen Kerns hergestellt ist.to solution This task is a frame-shaped axle with two crossbeams and two side rails, the by substantially closed hollow profiles with a wall thickness in the Magnitude be formed from 3 mm to 6 mm, proposed from a Aluminum alloy in one piece in a mold casting process made using at least one lost core.

Kokillenguß mit verlorenen Kernen, insbesondere Sandkernen, ist selbstverständlich zur Herstellung unterschiedlichster Bauteile bekannt, jedoch ist bislang noch kein einstückig in einer Aluminiumlegierung gegossener Achsträger für ein Kraftfahrzeug bekannt, der durch Quer- und Längsträger gebildet wird, die für sich im wesentlichen geschlossene Hohlprofile darstellen. Dies gilt insbesondere auch für den aus der genannten DE 101 53 272 A1 bekannten Achsträger.Chill casting with lost cores, especially sand cores, is of course known for the production of various components, but so far is not integrally cast in an aluminum alloy axle carrier for a motor vehicle is known, which is formed by transverse and longitudinal beams, which represent essentially closed hollow sections. This is especially true for the mentioned from the DE 101 53 272 A1 known axle carrier.

Die genannten geschlossenen Hohlprofile, die durch verlorene Kerne bzw. bevorzugt einen einzigen Sandkern für den gesamten Achsträger, die/der gehalten werden/wird, geformt werden können, gewährleisten eine bestmögliche Festigkeit auch bei geringen Wandstärken. Erfolgreich erprobt wurden hier bereits Wandstärken der Hohlprofile bzw. des Achsträgers, die in der Größenordnung zwischen 3 mm und 6 mm lagen, wobei in unterschiedlichen Abschnitten auch in Abhängigkeit von der jeweiligen Belastung unterschiedliche Wandstärken gewählt wurden. Derartig dünne Wandstärken sind selbstverständlich im Hinblick auf ein geringes Gewicht des Achsträgers besonders vorteilhaft. Ein bevorzugtes Gießverfahren zur Herstellung des Achsträgers ist dabei das sog. VRC/PRC (Vacuum Riserless Casting/Pressure Riserless Casting) der Alcoa Inc., Pittsburgh (USA).The closed hollow sections, which are lost by lost cores or prefers a single sand core for the entire axle carrier which is held will / will, can be shaped guarantee a best possible Strength even with small wall thicknesses. Successfully tested here already wall thicknesses the hollow sections or the axle beam, those in the order of magnitude between 3 mm and 6 mm, with different sections also in dependence were chosen from the respective load different wall thicknesses. Such a thin one wall thickness are natural in view of a low weight of the axle beam particularly advantageous. A preferred casting method for the production of the axle carrier is the so-called. VRC / PRC (Vacuum Riserless Casting / Pressure Riserless Casting) of Alcoa Inc., Pittsburgh (USA).

Claims (1)

Rahmenförmiger Achsträger, insbesondere Hinterachsträger, für ein Kraftfahrzeug, im wesentlichen bestehend aus zwei Querträgern und zwei Längsträgern, die durch im wesentlichen geschlossene Hohlprofile mit einer Wandstärke in der Größenordnung von 3 mm bis 6 mm gebildet werden, und der aus einer Aluminiumlegierung einstückig in einem Kokillengießverfahren unter Verwendung zumindest eines verlorenen Kerns hergestellt ist.frame-shaped axle, especially rear axle carriers, for a Motor vehicle, consisting essentially of two cross members and two side rails, the by substantially closed hollow profiles with a wall thickness in the Magnitude from 3 mm to 6 mm, and that of an aluminum alloy one piece in a mold casting process made using at least one lost core.
DE200410012662 2004-03-16 2004-03-16 Frame-shaped rear axle for a motor vehicle Expired - Fee Related DE102004012662B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200410012662 DE102004012662B4 (en) 2004-03-16 2004-03-16 Frame-shaped rear axle for a motor vehicle

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Application Number Priority Date Filing Date Title
DE200410012662 DE102004012662B4 (en) 2004-03-16 2004-03-16 Frame-shaped rear axle for a motor vehicle

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DE102004012662A1 DE102004012662A1 (en) 2005-10-06
DE102004012662B4 true DE102004012662B4 (en) 2010-08-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011051259A1 (en) 2011-06-22 2012-12-27 Benteler Automobiltechnik Gmbh Chassis component i.e. axle carrier, for motor car, has two longitudinal beams provided with two sections, where sections are different from each other, joined together and prepared by casting techniques
DE102015222412A1 (en) * 2015-11-13 2017-05-18 Zf Friedrichshafen Ag Cast component with film coating and method of manufacture

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008010551A1 (en) 2008-02-22 2009-08-27 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Subframe for a rear axle of a motor vehicle
DE102008028351B4 (en) 2008-06-13 2020-06-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Chassis component
DE102008057196A1 (en) 2008-11-13 2009-07-02 Daimler Ag Axle carrier i.e. rear axle carrier, for car, has side parts connected with each other by two cross bridges at frame construction, where one of cross bridges includes two individual profiles formed separately from each other
DE102009008841A1 (en) * 2009-02-13 2010-08-19 Volkswagen Ag Subframe for retaining and/or supporting e.g. steering transmission in front carriage of motor vehicle, has rear traverse element with section engaged by connection element that is firmly connected on both ends of rear traverse element
MX362852B (en) * 2013-04-26 2019-02-18 Honda Motor Co Ltd Vehicle subframe.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19581700T1 (en) * 1994-06-28 1997-05-22 Volvo Ab Wheel suspension for a pair of driven vehicle wheels
DE19922800A1 (en) * 1998-05-20 1999-11-25 Bayerische Motoren Werke Ag Manufacture system for sub-frame for motor vehicle incorporates frame junction point made of cast light metal and includes fabricated lateral and longitudinal frame elements
DE19850372A1 (en) * 1998-11-02 2000-05-04 Bayerische Motoren Werke Ag Frame or pillar hollow structure part of a vehicle body
DE19929761A1 (en) * 1999-06-29 2001-01-04 Fraunhofer Ges Forschung Core for components consists of a hollow molding with a single hollow body formed by applying a suspension of a powdered first base material and binder onto the surface of a support material to form a cladding layer, and sintering
DE10153272A1 (en) * 2000-11-01 2002-09-12 Honda Motor Co Ltd Die-cast subframe
EP0968776B1 (en) * 1994-05-27 2002-10-02 EOS GmbH ELECTRO OPTICAL SYSTEMS Process for use in foundry practice
EP1386827A2 (en) * 2002-08-01 2004-02-04 Audi Ag Subframe for motor vehicles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0968776B1 (en) * 1994-05-27 2002-10-02 EOS GmbH ELECTRO OPTICAL SYSTEMS Process for use in foundry practice
DE19581700T1 (en) * 1994-06-28 1997-05-22 Volvo Ab Wheel suspension for a pair of driven vehicle wheels
DE19922800A1 (en) * 1998-05-20 1999-11-25 Bayerische Motoren Werke Ag Manufacture system for sub-frame for motor vehicle incorporates frame junction point made of cast light metal and includes fabricated lateral and longitudinal frame elements
DE19850372A1 (en) * 1998-11-02 2000-05-04 Bayerische Motoren Werke Ag Frame or pillar hollow structure part of a vehicle body
DE19929761A1 (en) * 1999-06-29 2001-01-04 Fraunhofer Ges Forschung Core for components consists of a hollow molding with a single hollow body formed by applying a suspension of a powdered first base material and binder onto the surface of a support material to form a cladding layer, and sintering
DE10153272A1 (en) * 2000-11-01 2002-09-12 Honda Motor Co Ltd Die-cast subframe
EP1386827A2 (en) * 2002-08-01 2004-02-04 Audi Ag Subframe for motor vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011051259A1 (en) 2011-06-22 2012-12-27 Benteler Automobiltechnik Gmbh Chassis component i.e. axle carrier, for motor car, has two longitudinal beams provided with two sections, where sections are different from each other, joined together and prepared by casting techniques
DE102011051259B4 (en) * 2011-06-22 2016-06-30 Benteler Automobiltechnik Gmbh Motor vehicle chassis component and method for its production
DE102015222412A1 (en) * 2015-11-13 2017-05-18 Zf Friedrichshafen Ag Cast component with film coating and method of manufacture

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