DE102005057810A1 - Method for manufacturing gearbox housings for vehicles uses hydroforming to shape extrusion moulded profiles into housing - Google Patents

Method for manufacturing gearbox housings for vehicles uses hydroforming to shape extrusion moulded profiles into housing Download PDF

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Publication number
DE102005057810A1
DE102005057810A1 DE200510057810 DE102005057810A DE102005057810A1 DE 102005057810 A1 DE102005057810 A1 DE 102005057810A1 DE 200510057810 DE200510057810 DE 200510057810 DE 102005057810 A DE102005057810 A DE 102005057810A DE 102005057810 A1 DE102005057810 A1 DE 102005057810A1
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DE
Germany
Prior art keywords
housing
hydroforming
shape extrusion
extrusion moulded
profiles
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.)
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DE200510057810
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German (de)
Inventor
Alfred Niete
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to DE200510057810 priority Critical patent/DE102005057810A1/en
Publication of DE102005057810A1 publication Critical patent/DE102005057810A1/en
Withdrawn legal-status Critical Current

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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
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

The method involves using hydroforming to shape the housing. Extrusion moulded profiles are shaped by hydroforming into the housing. Secondary function surfaces and/or holes can be produced on the external contour of the housing. The housing surface can be formed as a golf ball surface which reduces noises.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Getriebegehäusen, insbesondere von Getriebegehäusen für PKW und NKW, gemäß dem Oberbegriff des Patentanspruchs 1.The The present invention relates to a process for the preparation of Transmission housings, in particular of gear housings for cars and commercial vehicles, according to the generic term of claim 1

Bei Getriebegehäusen für PKW und NKW ist eine hohe Festigkeit von besonderer Bedeutung. Üblicherweise werden nach dem Stand der Technik derartige Gehäuse im Druckgussverfahren hergestellt. Es ist jedoch bekannt, einzelne Getriebebauteile mittels Umformverfahren herzustellen. Die Vorteile der Umformverfahren, insbesondere der „Hydroforming"-Umformverfahren gegenüber klassischen Umformverfahren liegen in einer gleichmäßigen und hohen Festigkeit und Steifheit, optimiertem Gewicht sowie hoher Genauigkeit der auf diese Weise hergestellten Bauteile.at gear boxes for cars and commercial vehicles is a high strength of particular importance. Usually According to the prior art, such housings are produced by die-casting. It However, it is known, individual transmission components by forming manufacture. The advantages of the forming process, especially the "hydroforming" forming process across from classical forming processes lie in a uniform and high strength and stiffness, optimized weight and high Accuracy of the components produced in this way.

Beispielsweise ist aus der DE 196 45 791 A1 eine Schaltvorrichtung für Zahnräderwechselgetriebe von Kraftfahrzeugen bekannt, umfassend eine Schaltwalze, die parallel zu einer Getriebewelle drehbar angeordnet ist und in deren Mantelfläche zumindest eine Schaltnut aufweist, in die ein Mitnehmer einer Schaltgabel eingreift, dessen Gabel in einer Schaltmuffe geführt ist, wobei die Schaltwalze aus jeweils spanlos durch ein Umformverfahren hergestellten Einzelteilen zusammengesetzt ist.For example, is from the DE 196 45 791 A1 a switching device for change-speed gearbox of motor vehicles, comprising a shift drum which is rotatably arranged parallel to a transmission shaft and in whose lateral surface has at least one shift groove, in which engages a driver of a shift fork, the fork is guided in a shift sleeve, wherein the shift drum from each is formed without cutting produced by a forming process items.

Des weiteren wird im Rahmen der DE 103 05 074 A1 ein Verfahren zur Herstellung einer Getriebewelle mit Innenhochdruckumformung beschrieben, bei dem die Getriebewelle mindestens ein Festzahnrad und eine Steckverzahnung aufweist. Hierbei wird ein Getriebewellen-Formteil durch folgende Verfahrensschritte hergestellt:

  • a) Einlegen einer für die Laufradverzahnung vorgeformten (gestauchten) Hohlwelle in ein Formgebungswerkzeug, wobei auf einen gestauchten Ringabschnitt der Hohlwelle ein Zahnradring aufgesetzt ist;
  • b) Aufsetzen bzw. Aufschieben einer mit einer Innenverzahnung versehenen Hülse auf die Hohlwelle und
  • c) Zufuhr von Hochdruckmedium in den Innenraum der Hohlwelle, wobei dies vorzugsweise von beiden Stirnseiten der Hohlwelle aus erfolgt.
Furthermore, under the DE 103 05 074 A1 a method for producing a transmission shaft with hydroforming described in which the transmission shaft has at least one fixed gear and a spline. In this case, a gear shaft molding is produced by the following method steps:
  • a) inserting a preformed for the impeller toothing (upset) hollow shaft in a forming tool, wherein on a compressed annular portion of the hollow shaft, a gear ring is placed;
  • b) placing or pushing a bush provided with an internal toothing on the hollow shaft and
  • c) supply of high-pressure medium in the interior of the hollow shaft, wherein this is preferably done from both end sides of the hollow shaft.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung von Getriebegehäusen, insbesondere von Getriebegehäusen für PKW und NKW anzugeben, durch dessen Durchführung die Festigkeit der Gehäuse signifikant erhöht wird. Des weiteren sollen größere Querschnitte ermöglicht und Toleranzen reduziert werden.Of the The present invention is based on the object, a method for the manufacture of gearboxes, in particular of transmission housings for cars and Indicate by carrying out the strength of the housing significantly is increased. Furthermore, larger cross sections allows and tolerances are reduced.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Weitere erfindungsgemäße Ausgestaltungen und Vorteile gehen aus den Unteransprüchen hervor.These The object is solved by the features of claim 1. Further Embodiments of the invention and advantages are apparent from the dependent claims.

Demnach wird vorgeschlagen, Getriebegehäuse für PKW und NKW durch ein „Hydroforming"-Umformverfahren herzustellen. Im Rahmen einer vorteilhaften Ausführungsform ist vorgesehen, stranggepresste Profile über ein „Hydroforming"-Umformverfahren zum Gehäuse umzuformen.Therefore it is proposed gearbox for cars and commercial vehicles through a "hydroforming" forming process manufacture. In the context of an advantageous embodiment is provided, extruded Profiles over a "hydroforming" forming process to the housing reshape.

Des weiteren kann gemäß der Erfindung vorgesehen sein, dass an der Außenkontur des Gehäuses Nebenfunktionsflächen und/oder -löcher erzeugt werden.Of another can according to the invention be provided that on the outer contour of the housing In addition to functional surfaces and / or holes be generated.

Es ist auch möglich, dass die Oberflächenstruktur eines durch das erfindungsgemäße Verfahren herzustellenden Gehäuses definiert verändert wird; beispielsweise kann über eine als „Golfballoberfläche" ausgebildete Gehäuseoberfläche eine Minderung der Geräusche erzielt werden.It is possible, too, that the surface texture one by the method according to the invention to be produced housing is changed defined; for example can over a designed as a "golf ball surface" housing surface a Reduction of noise be achieved.

Durch die erfindungsgemäße Konzeption können die Querschnitte mindestens 100 % aufgeweitet werden. In vorteilhafter Weise wird bei einer gleichzeitig erzielbaren Reduzierung der Toleranzen eine Festigkeitserhöhung um ca. 50 % erzielt.By the conception according to the invention can be Cross sections at least 100% be widened. In an advantageous manner Way is a simultaneously achievable reduction of tolerances increase in strength achieved by about 50%.

Claims (5)

Verfahren zur Herstellung von Getriebegehäusen, insbesondere von Getriebegehäusen für PKW und NKW, dadurch gekennzeichnet, dass die Getriebegehäuse durch ein „Hydroforming"-Umformverfahren hergestellt werden.A method for the production of gearboxes, in particular of gearboxes for cars and commercial vehicles, characterized in that the gearbox housings are manufactured by a "hydroforming" Ummoformverfahren. Verfahren zur Herstellung von Getriebegehäusen nach Anspruch 1, dadurch gekennzeichnet, dass zur Gehäuseherstellung stranggepresste Profile verwendet werden, die über ein „Hydroforming"-Umformverfahren zum Gehäuse umgeformt werden.A method for producing transmission housings according to Claim 1, characterized in that extruded housing for housing production Profiles are used over a "hydroforming" forming process to the housing be transformed. Verfahren zur Herstellung von Getriebegehäusen nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an der Außenkontur des Gehäuses Nebenfunktionsflächen und/oder -löcher erzeugt werden.A method for producing transmission housings according to Claim 1 or 2, characterized in that on the outer contour of the housing In addition to functional surfaces and / or holes be generated. Verfahren zur Herstellung von Getriebegehäusen nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die Oberflächenstruktur des Gehäuses definiert verändert wird.A method for producing transmission housings according to Claim 1, 2 or 3, characterized in that the surface structure of the housing defined changed becomes. Verfahren zur Herstellung von Getriebegehäusen nach Anspruch 4, dadurch gekennzeichnet, dass die Gehäuseoberfläche als „Golfballoberfläche" ausgebildet wird, um auf diese Weise eine Minderung der Geräusche zu erzielen.A method for producing transmission housings according to Claim 4, characterized in that the housing surface is formed as a "golf ball surface", to achieve a reduction of the noise in this way.
DE200510057810 2005-12-03 2005-12-03 Method for manufacturing gearbox housings for vehicles uses hydroforming to shape extrusion moulded profiles into housing Withdrawn DE102005057810A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200510057810 DE102005057810A1 (en) 2005-12-03 2005-12-03 Method for manufacturing gearbox housings for vehicles uses hydroforming to shape extrusion moulded profiles into housing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510057810 DE102005057810A1 (en) 2005-12-03 2005-12-03 Method for manufacturing gearbox housings for vehicles uses hydroforming to shape extrusion moulded profiles into housing

Publications (1)

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DE102005057810A1 true DE102005057810A1 (en) 2007-06-06

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DE200510057810 Withdrawn DE102005057810A1 (en) 2005-12-03 2005-12-03 Method for manufacturing gearbox housings for vehicles uses hydroforming to shape extrusion moulded profiles into housing

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645791A1 (en) * 1996-11-07 1998-05-14 Schaeffler Waelzlager Ohg Chiplessly formed gear changing roll
DE19751408C2 (en) * 1997-11-14 1999-10-21 Mannesmann Ag Method and device for producing an integral housing for hydraulic steering
DE19719629C2 (en) * 1997-05-09 2001-09-06 Daimler Chrysler Ag Method and device for manufacturing motor vehicle axle housings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645791A1 (en) * 1996-11-07 1998-05-14 Schaeffler Waelzlager Ohg Chiplessly formed gear changing roll
DE19719629C2 (en) * 1997-05-09 2001-09-06 Daimler Chrysler Ag Method and device for manufacturing motor vehicle axle housings
DE19751408C2 (en) * 1997-11-14 1999-10-21 Mannesmann Ag Method and device for producing an integral housing for hydraulic steering

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