WO2019007901A1 - Boîtier d'engrenage différentiel et engrenage différentiel - Google Patents

Boîtier d'engrenage différentiel et engrenage différentiel Download PDF

Info

Publication number
WO2019007901A1
WO2019007901A1 PCT/EP2018/067798 EP2018067798W WO2019007901A1 WO 2019007901 A1 WO2019007901 A1 WO 2019007901A1 EP 2018067798 W EP2018067798 W EP 2018067798W WO 2019007901 A1 WO2019007901 A1 WO 2019007901A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing part
housing
differential gear
collar
gear housing
Prior art date
Application number
PCT/EP2018/067798
Other languages
German (de)
English (en)
Inventor
Roman Hiemer
Roland Ruf
Gerhard Wahl
Alexander GREINWALD
Robert Filgertshofer
Gordan TRIESCH
Rupert Turrina
Original Assignee
Hirschvogel Umformtechnik 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 Hirschvogel Umformtechnik Gmbh filed Critical Hirschvogel Umformtechnik Gmbh
Publication of WO2019007901A1 publication Critical patent/WO2019007901A1/fr

Links

Classifications

    • 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
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H48/40—Constructional details characterised by features of the rotating cases
    • 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
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H2048/385—Constructional details of the ring or crown gear

Definitions

  • the present invention relates to a differential gear housing and a differential gear.
  • Differential gears are well known in the art and are used for example in vehicles to drive two wheels so that they can turn in curves with different speeds, but with the same driving force.
  • Essential components of a differential gear are a housing in which differential gears are received to form the differential, and a drive wheel.
  • the drive wheel is connected to the housing, for example welded to its outer sides.
  • a differential gear is known in which the drive wheel is part of a housing part which is welded to another housing part to form the housing.
  • a differential gear housing which comprises a first housing part and a second housing part, which are integrally connected to one another in the interface state in an interface region, wherein the first housing part as integrally forged component comprises a collar for forming a drive wheel and wherein the first housing part and the second housing part are formed such that in the assembled state, the first housing part and the second housing part cooperate positively in the circumferential direction.
  • a cohesive connection between the first housing part and the second housing part is combined with a positive cooperation between the first housing part and the second housing part in the differential gear housing according to the invention.
  • This advantageously increases the stability of the manufactured differential gear housing while at the same time reducing the weight of the manufactured differential gear housing because, for example, an additional attachment means - e.g. a screw - can do without.
  • the welding to cohesive connection of the two housing parts simplifies considerably.
  • the first housing part and the second housing part act in
  • Interface area seen in the direction of rotation form fit together.
  • both the cohesive connection and the positive connection are arranged in the interface area.
  • the second housing part can be aligned or fixed by the form fit in the production with respect to the first housing part for a subsequent formation of the material connection.
  • the interface region is in particular that region in which the first housing part makes contact with the second housing part, or a transition from the first housing part to the second housing part takes place in the axial direction.
  • Particularly significant for the weight reduction of the manufactured differential gear housing proves the common formation of the first housing part and the drive wheel as a one-piece component. In addition, will thereby reducing the number of components to form the differential gear housing, which is advantageous to assembly of the differential gear housing during manufacture.
  • the first housing part has a curvature for forming a cavity in which the differential gears or planetary gears are arranged to form the differential.
  • the curvature is formed substantially concentric with the outermost circumference of the collar and preferably formed stepwise in the radial direction.
  • the second housing part is arranged in the axial direction substantially congruent or symmetrical to the curvature of the first housing part and forms together with the curvature of the cavity.
  • the axial direction is determined by an axis of symmetry of the differential gear housing, to which the differential gear housing is rotationally symmetrical, in particular to which the collar is substantially completely rotationally symmetrical.
  • the first housing part and the second housing part are hot-formed or forged.
  • the first housing part and the second housing parts are designed as a plug-in set for forming the force acting in the circumferential direction positive engagement.
  • the first and second housing parts can be inserted into one another during manufacture, as a result of which they are advantageously arranged in a fixed position relative to one another for a subsequent welding operation.
  • the first housing part forms a bearing seat for the second housing part.
  • the first housing part and the second housing part in the sense of a key-lock principle are plugged into each other.
  • the first and the second housing part are advantageously already aligned with one another during assembly in a desired position.
  • the second housing part engages with an end face in the first housing part.
  • the second housing part partially engages through the collar of the first housing part.
  • recesses in the first housing part are provided in particular in the collar.
  • the insertion surface with respect to the axis of symmetry obliquely, ie, not parallel, extends to further facilitate insertion of the second housing part in the first housing part.
  • the second housing part has on its front side in the circumferential direction extending arcuate sections or ring segments, which engage in the assembled state in complementary recesses in the first housing part, in particular reach through the collar.
  • the end face of the first housing part is interrupted in the circumferential direction or forms ring segments.
  • an arcuate section or ring segment preferably extends over an angular range between 10 ° and 140 °, preferably between 30 ° and 130 ° and particularly preferably between 80 ° and 120 °.
  • a plurality of arcuate subsections in particular in the circumferential direction seen equidistant from each other arranged arcuate sections provided.
  • the arcuate sections interact with the second housing part in the circumferential direction in a form-fitting manner.
  • the second housing part is configured bow-shaped or fork-shaped.
  • the second and the first housing part additionally or alternatively have an end toothing for forming the positive connection in the circumferential direction.
  • the arcuate sections or ring segments are hardened.
  • first housing part and the second housing part are connected to one another via a material seam extending in the axial and / or radial direction.
  • the material seam is attached to an outer side of the differential gear housing. It proves to be particularly advantageous if the first housing part and the second housing part are designed such that the assembled or nested system of the first housing part and the second housing part, at least in the interface area, forms a closed outer surface.
  • This at least partially closed outer surface covers the components arranged within the cavity, so that they are protected from a material seaming process, for example a welding of the first and the second housing part.
  • a material seaming process for example a welding of the first and the second housing part.
  • it is a material seam, which is formed by a laser welding process, for example using an additional wire.
  • the material seam extends along the circumference of the arcuate section or partially encapsulated.
  • the stability of the manufactured differential gear housing is advantageously further increased.
  • the material seam is arranged on one side of the first housing part, which is opposite to a side, over which the second housing part is inserted during mating.
  • the first housing part and the second housing part are designed such that between the first housing part and the second housing part a recess for receiving a material material material is formed, in particular a seen in the radial direction between the first Housing part and the second housing part arranged recess which comes to rest there in the interface area.
  • the puncture advantageously provides a surface which is as large as possible, extending in the axial direction, for forming the material seam, as a result of which the stability of the connection between the first housing part and the second th housing part can be further improved.
  • a ratio between a depth of the groove dimensioned in the axial direction to an axial thickness of the collar in the interface region is between 0.1 and 0.5, preferably between 0.15 and 0.45 and particularly preferably between 0.25 and 0 , 35 on.
  • the groove is filled during welding with the material of the additional wire, preferably completely filled.
  • the recess and / or the insertion surface comprises a bevel or a section extending obliquely to the axis of symmetry.
  • the first and the second housing part are configured such that the recess in the interface area is formed on the outer surface of the assembled system of first and second housing part.
  • a clearance between 0.05 and 0.5 mm, preferably between 0.1 and 0.4 mm, and more preferably between 0.1 and 0.3 mm or at least partially an interference fit is present.
  • These dimensions make it particularly easy to nest the first and second housing parts.
  • a dimensioning between 0.1 and 0.3 mm has been found to be advantageous that the clearance does not only ensure easy assembly, but also allows a positionally fixed arrangement between the first housing part and the second housing part, the handle when materially connecting the simplified first and second housing part.
  • an interference fit is conceivable, with which the second housing part is fixed before the formation of the material connection.
  • the second housing part for the formation of the integral connection with respect to the first housing part can be fixed with advantage. It is conceivable that the interference fit by radially or in the circumferential direction extending projections on the inside of the recess or at an outer side of the arcuate portions is conditional or supported.
  • a joined state is to be understood as a state in which the first housing part and the second housing part are assembled, but not yet connected to one another in a material-locking manner.
  • the interface region is arranged at the level of the collar.
  • This proves to be particularly advantageous for the forging process of the first housing part, as this only a curvature in one direction is required.
  • two substantially equal halves can be provided for the formation of the cavity, which proves advantageous for the loading of the differential gear housing in time before assembly and for the masses arranged in the axial direction.
  • the end face of the second housing part rests on a bearing surface of the first housing part, wherein the bearing surface is arranged in the axial direction substantially at a height with a terminating surface bounding the collar in the axial direction.
  • the second housing part By forming a bearing surface for the second housing part, the second housing part can be supported during the formation of the cohesive connection. Furthermore, it is provided that the collar is thicker at its radially outermost periphery than in the interface area. As a result, it is advantageously possible to realize simple access to the interface area, for example for the formation of the integral connection.
  • the first housing part is made of a different material than the second housing part. It is particularly preferred if a material from which the first housing part is made comprises 16MnCrS5 and / or if a material from which the second housing part is made comprises 30MnVS6.
  • a further aspect of the present invention is a differential gear housing having a first housing part and a second housing part, which in the interface state are connected to one another in an interface region in a material-locking, non-positively locking and / or positive-locking manner, wherein the first housing part, as an integrally forged component, forms a collar for forming a drive wheel, wherein in the finished state, the first housing part provides a larger proportion of the formed between the first housing part and the second housing part cavity as the second housing part.
  • Another aspect of the present invention is a differential gear having a differential gear housing. All features described for the differential gear housing according to the invention and their advantages can be analogously also transferred to the differential gear according to the invention and vice versa.
  • Another aspect of the present invention is a method of making a differential gearbox comprising the steps of:
  • first housing part and the second housing part components such.
  • B. balancing gears are disposed within the first housing part and / or the second housing part.
  • the first housing part and / or the second housing part after forging, preferably directly after forging, by a machining process, such as milling be further processed.
  • a toothing for the drive wheel can be realized or bores can be used to provide mountings for bearing bolts, differential gears or the like.
  • 1 a and 1 b a differential gear housing according to a preferred embodiment of the present invention in an overall perspective view (1 a) and a sectional view (1 b),
  • FIG. 2 a and 2 b a first housing part for the differential gear housing from FIGS. 1 a and 1 b in an overall perspective view (FIG. 2 a) and a sectional view (FIG. 2 b), FIG.
  • FIG. 3a and 3b a second housing part for the differential gear housing of Figures 1 a and 1 b in a perspective overall view (3a) and a sectional view (3b),
  • Fig. 4 a detailed view of the interface portion of the differential gear housing of Figures 1 a and 1 bunch
  • Fig. 5 is a sectional view of a differential gear housing according to another preferred embodiment of the present invention.
  • 1 shows a differential gear housing 1 according to a preferred embodiment of the present invention in an overall perspective view (see FIG. 1 a) and a sectional view (see FIG. 1 b).
  • it is a differential gear housing 1 for a differential in a vehicle.
  • Such differentials are used in particular to drive two wheels so that they can turn in curves at different speeds, but with the same driving force.
  • differential housing 1 ie within a cavity 15 of the differential gear housing, differential gears of the differential are provided.
  • Essential components of the differential gear housing 1 are a first housing part 1 1, which is shown in detail in Figures 2a and 2b, and a second housing part 12, which is shown in Figures 3a and 3b in detail.
  • the first housing part 1 1 and the second housing part 12 substantially two halves of the differential gear housing 1 1, for example, in which the dimensioned in the axial direction extensions of the first housing part 1 1 and the second housing part 12 are substantially identical or identical .
  • the first housing part 1 1 is forged as a one-piece component, for example by a swaging, and comprises a collar 13 for forming a drive wheel.
  • a curvature 14 is realized substantially concentric with the outermost circumference of the collar, which forms a counterpart to the second housing part 12.
  • the buckle 14 and the second housing part 12 define the cavity 15 of the differential gear housing 1.
  • the first housing part 1 1 has been forged by a warm forming process.
  • the collar 13 preferably has at its periphery a toothing 18, which was realized in particular following the forging process. It is conceivable that the toothing 18 has been milled in the outermost circumference of the collar 13 seen in the radial direction. In this case, tooth edges of the teeth 18 run obliquely to the axis of symmetry S.
  • the first housing part 1 1, in particular the teeth 18 of the first housing part 1 hardened.
  • a material from which the first housing part 11 is manufactured comprises 16MnCrS5.
  • the first housing part 1 1 recesses 17, in particular in the region of the curvature 14 or at the foot of the curvature 14, d. H.
  • the recesses 17 are pocket-shaped or slit-shaped and extend partially along the direction of rotation U.
  • the recess 17 in the first housing part 1 1 extends in particular only over a specific or fixed angle range.
  • two mutually opposite recesses 17, which are seen equal in length, in particular in the direction of rotation U, are provided.
  • the recess 17 is limited in the axial direction by a support surface 28.
  • the second housing part 12 can be inserted with its end face 22 in the recess 17 until the end face 22 rests on the support surface 28.
  • the inserted into the recess 17 parts of the second housing part 12 then act with the recess 17 seen in the circumferential direction U limiting side surfaces 16 together form fit.
  • the recesses 17 of the first housing part 11 and the parts of the second housing part 12 engaging in the recess 17 are preferably designed in such a way that there is a clearance adjustment or press fit between them.
  • the recesses 17 in the first housing part 1 1 are designed to be complementary to the shape of the second housing part 12 on its end face 22.
  • the embodiment illustrated in FIGS. 3 a and 3 b is bow-shaped or fork-shaped.
  • the second housing part 22 is also forged, in particular forged in one piece.
  • the second is Housing part 22 has also been reshaped by a hot forging process.
  • a material from which the second housing part 22 is made comprises 30MnVS6.
  • the second housing part 22 comprises an opening 35 for receiving an axle or shaft, wherein the opening 35 in the installed state runs concentrically to the outermost circumference of the collar 13 and in the axial direction congruent to a further opening 35 'in the first housing part 1 first is arranged.
  • the second housing part 12 includes bearings 34 in which, for example, differential gears of the differential can be stored.
  • the second housing part 22 at one of the end face 22, which engages in the mounted state in the recess 17 of the first housing part 1 1, end facing an insertion region 31. It is conceivable that the insertion region 31 tapers in the axial direction or has an obliquely extending insertion surface. It is also conceivable, for example, for this insertion surface to be realized by means of a clamping process subsequent to the forging, in particular milling.
  • the differential gear housing 10 For mounting the differential gear housing 10, it is provided in particular that after a separate production of the first housing part 1 1 and the second housing part 12, planetary gears, bearing bolts or the like are mounted and then for closing the differential gear housing 1, the second housing part 12 in the first housing part 1 is inserted or positioned along a predetermined by the symmetry axis S direction. It is advantageous in this case to use an expanding mandrel for positioning. Preferably, one end of the second housing part 12 passes through the collar 13 until the end face 22 of the second housing part rests on the bearing surface 28 of the first housing part 1 1.
  • a material connection is preferably provided, as shown in Figure 4 in a detailed view.
  • the first housing part 1 1 is welded to the second housing part 12.
  • a thickness DZ of the collar 13 dimensioned in the axial direction is greater at the outer periphery than a thickness DK of the collar 13 in the interface region SB dimensioned in the axial direction.
  • the first housing part 1 1 and the second housing part 12 are dimensioned such that a recess 25, in particular a groove extending in the axial direction 25, between the first housing part 1 1 and the second housing part 12 is formed.
  • the insertion surface of the second housing part 12 is made inclined relative to the axis of symmetry S in such a way that the recess 25 is formed.
  • the recess 25 is dimensioned such that a ratio between a dimensioned in the axial direction depth ET of the groove to the axial thickness DK of the collar 13 in the interface region SB a value between 0.1 and 0.5, preferably between 0.15 and 0.45, and more preferably between 0.25 and 0.35.
  • first housing part 1 1 and the second housing part 12 are designed such that they form a closed outer surface in a mated state.
  • a material seam 20 for connecting the first housing part 11 and the second housing part 12 can be realized with advantage from the outside, wherein the components within the housing, ie in the cavity 15, are protected during the material bonding process, for example during welding, in particular with regard to welding spatters ,
  • the closed outer surface of the composite system of the first housing part 1 1 and the second housing part 12 covers the components within the housing.
  • FIG 5 is a sectional view of a Differentialget ebegeophuses 1 is shown according to another preferred embodiment of the present invention.
  • the differential gear housing 1 differs in particular in that the first housing part 1 1 and the second housing part 12 are formed such that the first housing part 1 1 in the assembled state, a larger proportion of the cavity 15 as provides the second housing part 12.
  • the second housing part 12 is configured lid-like and forms a conclusion of the differential case housing 10 at its end face.
  • a ratio between a second height H2 of the second housing part 12 dimensioned in the axial direction to a first height H1 of the first housing part 1 1 dimensioned in the axial direction is between 0.3 and 0.7, preferably between 0.4 and 0.6 and more preferably substantially 0.5.
  • the largest possible area of the differential gear housing 1, which forms the hollow space 15 can be forged in one piece. This proves to be particularly advantageous in terms of a moment / Kraftü transmission in the differential gear housing 1.
  • the lid-like second housing part 12 is connected to the first housing part 11 in a material, force and / or form-fitting manner. To a hole, z.
  • the collar 13 extends obliquely with respect to a perpendicular to the symmetry axis S extending plane K.
  • the collar 13 is inclined relative to the plane perpendicular to the axis of symmetry S by an angle ⁇ between 10 ° and 60 °, preferably between 30 ° and 50 ° and particularly preferably between 35 ° and 45 °.
  • an oblique course of the collar 13 is dispensed with, especially if the position for the hole is easily accessible.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

L'invention concerne un boîtier d'engrenage différentiel (1) comprenant une première partie de boîtier (11) et une deuxième partie de boîtier (12) qui sont reliées l'une à l'autre par engagement de matière à l'état assemblé dans une région d'interface (SB). La première partie de boîtier (11) comprend en tant que composant forgé d'une seule pièce un rebord (13) destiné à former une roue d'entraînement et la première partie de boîtier (11) et la deuxième partie de boîtier (12) sont conçues de telle sorte que, à l'état assemblé, la première partie de boîtier (11) et la deuxième partie de boîtier (12) coopèrent par complémentarité de formes lorsque l'on regarde dans le sens de rotation (U). Les deux parties de boîtier (11, 12) sont conçues par exemple sous la forme d'un ensemble enfichable.
PCT/EP2018/067798 2017-07-04 2018-07-02 Boîtier d'engrenage différentiel et engrenage différentiel WO2019007901A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017103980.3U DE202017103980U1 (de) 2017-07-04 2017-07-04 Differentialgetriebegehäuse und Differentialgetriebe
DE202017103980.3 2017-07-04

Publications (1)

Publication Number Publication Date
WO2019007901A1 true WO2019007901A1 (fr) 2019-01-10

Family

ID=59701044

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/067798 WO2019007901A1 (fr) 2017-07-04 2018-07-02 Boîtier d'engrenage différentiel et engrenage différentiel

Country Status (2)

Country Link
DE (1) DE202017103980U1 (fr)
WO (1) WO2019007901A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112460224A (zh) * 2019-09-06 2021-03-09 大众汽车股份公司 用于制造差速传动装置的方法以及差速传动装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019203340A1 (de) * 2019-03-12 2020-09-17 Robert Bosch Gmbh Differential- oder Verteilergetriebe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1219865A1 (fr) 2000-12-29 2002-07-03 Johann Hay GmbH & Co. KG, Automobiltechnik Assemblage de différentiel et procédé correspondant
US20110263374A1 (en) * 2010-04-27 2011-10-27 Cripsey Timothy J Flow-formed differential case assembly
US20160356372A1 (en) * 2015-06-08 2016-12-08 Magna Powertrain Of America, Inc. Differential assembly with single weld joint connecting two-piece differential case and ring gear

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1219865A1 (fr) 2000-12-29 2002-07-03 Johann Hay GmbH & Co. KG, Automobiltechnik Assemblage de différentiel et procédé correspondant
US20110263374A1 (en) * 2010-04-27 2011-10-27 Cripsey Timothy J Flow-formed differential case assembly
US20160356372A1 (en) * 2015-06-08 2016-12-08 Magna Powertrain Of America, Inc. Differential assembly with single weld joint connecting two-piece differential case and ring gear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112460224A (zh) * 2019-09-06 2021-03-09 大众汽车股份公司 用于制造差速传动装置的方法以及差速传动装置

Also Published As

Publication number Publication date
DE202017103980U1 (de) 2017-08-09

Similar Documents

Publication Publication Date Title
DE69901141T2 (de) Herstellungsverfahren für Kraftfahrzeug- Ausgleichsgetriebe
DE69905815T2 (de) Gehäuse für Kraftfahrzeug- Ausgleichsgetriebe
EP2137434B9 (fr) Differentiel presentant une roue motrice
WO2013174552A1 (fr) Plaque d'appui et de guidage dans un train épicycloïdal
DE102012216410A1 (de) Differentialgetriebe
DE102017104159A1 (de) Zahnrad für eine Ausgleichswelle und eine Ausgleichswelle
WO2015067262A2 (fr) Douille coulissante pour le montage de roues planétaires
DE102011087579A1 (de) Stirnraddifferenzial mit auf Trägerteil zentriertem Antriebsrad
DE102012208799A1 (de) Stütz- und Führungsscheibe in einem Planetentrieb
DE102008006627B4 (de) Differentialkorb aus Halbschalen und Verfahren zur Herstellung eines Differentialkorbs
DE102012208797A1 (de) Planetenträgeranbindung zu einer Laststufe
WO2019007901A1 (fr) Boîtier d'engrenage différentiel et engrenage différentiel
DE102015009051A1 (de) Zahnrad, insbesondere für einen Kraftwagen, sowie Verfahren zum Herstellen eines Zahnrads
DE102012208798A1 (de) Planetenträger mit integriertem Verzahnungsprofil
DE102012208796A1 (de) Anbindung eines Planetenträgers an einer Laststufe
DE4302726A1 (en) Toothed shaft connection between drive shaft and hub - has teeth and tooth gaps in drive shaft gearing prismatic and hardened over entire length
DE10244395B4 (de) Differentialgetriebe und Herstellungsverfahren dafür
DE102012202455A1 (de) Differenzialbaugruppe mit einer Kunststoffverbindungsmethode und Montage eines Planetenträgers
DE102017111039A1 (de) Mehrteiliges Zahnrad mit Welle-Nabe-Verbindung
WO2017063813A1 (fr) Couronne à denture intérieure et à denture frontale, ainsi que procédé de fabrication associé et boîte de vitesses dotée d'une telle couronne
DE102011076277A1 (de) Planetenradträger
DE102020113361A1 (de) Gehäuse zur Aufnahme des Getriebes eines Kegelraddifferentials und Kegelraddifferential
WO2016162029A1 (fr) Cage de différentiel en plusieurs parties d'un différentiel à pignons droits composé de parties forgées et de parties en tôle métallique
DE102012208805A1 (de) Kombinierte Gleitlagerung in einem Planetentrieb
WO2020035618A1 (fr) Disque de frein assemblé et procédé de fabrication d'un disque de frein de ce type

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18737865

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18737865

Country of ref document: EP

Kind code of ref document: A1