WO2015067247A1 - Engrenage planétaire pourvu d'un porte-satellites relié par liaison de matières - Google Patents

Engrenage planétaire pourvu d'un porte-satellites relié par liaison de matières Download PDF

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Publication number
WO2015067247A1
WO2015067247A1 PCT/DE2014/200103 DE2014200103W WO2015067247A1 WO 2015067247 A1 WO2015067247 A1 WO 2015067247A1 DE 2014200103 W DE2014200103 W DE 2014200103W WO 2015067247 A1 WO2015067247 A1 WO 2015067247A1
Authority
WO
WIPO (PCT)
Prior art keywords
planetary gear
planet carrier
drive wheel
planetary
cohesive connection
Prior art date
Application number
PCT/DE2014/200103
Other languages
German (de)
English (en)
Inventor
Iñaki FERNANDEZ
Harald Martini
Thorsten Biermann
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2015067247A1 publication Critical patent/WO2015067247A1/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
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H48/11—Differential gearings with gears having orbital motion with orbital spur gears having intermeshing planet gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/28—Seam welding of curved planar seams
    • B23K26/282—Seam welding of curved planar seams of tube sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • 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
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/082—Planet carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
    • 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
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H2048/106—Differential gearings with gears having orbital motion with orbital spur gears characterised by two sun gears
    • 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 invention relates to a planetary gear for a motor vehicle, with a drive wheel, from which via a planet carrier torque to a first planetary gear and / or a second planetary gear and then to a first and / or a second sun gear can be passed, and with a bridging component , which is connectable to the drive wheel and / or the planet carrier.
  • a planetary gear can be used for example as a differential or differential gear in a final drive of a motor vehicle can.
  • a planetary gear has a drive wheel, in which a torque of, for example, an output shaft of a vehicle transmission is introduced.
  • the drive wheel is connected to a planetary carrier and transmits the introduced torque, less possibly occurring losses, such as friction losses, via a first and / or a second planetary gear set to a first and / or second sun gear.
  • Reference is made to DE 10 2007 040 475 A1 whose functional and geometrical features are to be considered as integrated here.
  • a cohesive connection is arranged and dimensioned so that 90% to 100% of the torque introduced into the drive wheel via the cohesive connection be transmitted.
  • the bridging component and the planetary carrier are connected to one another exclusively by means of a cohesive connection, that is to say without an additional positive or positive connection.
  • a cohesive connection in this context, in particular a welded joint, a solder joint or an adhesive bond to understand.
  • different welding methods can be used for the realization of, for example, the welded connection.
  • Laser welding, friction welding and (protective) gas welding have proved to be particularly suitable welding processes.
  • the entire torque introduced into the drive wheel should be transmitted exclusively via the integral connection.
  • the torque transmission in a planetary gear can in practice all- However, it may also be lossy, so that not the entire torque is transferable.
  • the claimed value range of 90% to 100% should already take into account possible transmission losses, for example due to friction between the components. This means that in principle the entire torque introduced minus possible transmission losses is transferable.
  • the introduced torque should at least partially, but then be transferable exclusively via the cohesive connection.
  • the bridging component may, for example, be arranged radially on the outside of the planet carrier, so that the planet carrier is connected from the radially inner direction to the bridging component by means of the integral connection.
  • the inventive cohesive connection between the bridging member and the planet carrier a particularly easy-built planetary gear is realized because, for example, can be dispensed with a comparatively difficult to build screw and / or rivet connection between these components. This means that weight is saved simply by dispensing with the individual screws or rivets.
  • the cohesive connection is formed circumferentially between the bridging member and the planet carrier. Due to the radially encircling cohesive connection, a particularly high mechanical rigidity can be achieved.
  • the cohesive connection can also be formed over the circumference of the planet carrier and / or the drive wheel selectively and / or in sections. This means that instead of a continuous, continuous cohesive connection, only individual connection points are created, which connect individual points and / or individual sections of the planar carrier and of the bridging component with one another.
  • the cohesive connection has a plurality of connection points, which are offset from each other over the circumference of the planet carrier and / or the drive wheel to each other.
  • connection points Preferably, two, three, four, five, six, seven, eight, nine or more joints may be provided.
  • the cohesive connection has three connection points, which are offset by 120 ° from each other over the circumference of the planetary carrier and / or the drive wheel.
  • the planet carrier is designed in several parts and in particular has two planet carrier halves, which are each arranged in an axial end region of the drive wheel.
  • the two planet carrier halves may be formed substantially disc-shaped.
  • the planet carrier halves are produced without cutting and / or deep-drawn sheet metal parts.
  • these sheet metal parts can be made of a suitable steel by cold forming.
  • non-cutting produced such as deep-drawn / cold-formed sheet metal parts are particularly suitable because of their good weldability.
  • the bridging component is integrally formed as a monolithic part with the drive wheel or, alternatively, rotatably connected to the material-separate, designed as a spur gear drive wheel.
  • the bridging component to be connected to the planetary carrier by means of the cohesive connection is formed either as an integral component by the drive wheel itself and accordingly has a spur wheel outer contour or an external toothing.
  • the bridging member is then necessarily connected to the drive wheel because it is formed integrally therewith.
  • the bridging member may also be a component materially formed separately to the drive wheel, which in turn by means of another, any connection with the trained as a spur gear drive wheel is connected.
  • This connection between the Students Wegungsbauteil and the drive wheel can be realized in particular by a material, positive or non-positive connection. For example, a weld, screw or rivet connection may be provided.
  • the bridging member may be formed, for example, as externally toothed ring gear or spur gear.
  • the bridging member has a cylindrical inner recess. This means that the bridging component can be configured in the radial direction without flangeless, without projections, flat, smooth, continuous or the like. In this way, a particularly accurate cohesive connection, in particular during welding can be achieved.
  • first sun gear is connectably connected to the second sun gear via the first planetary gearset and the second planetary gearset.
  • the planetary gear according to the invention can be used particularly well if the planetary gear is designed aschtbasustirnradgetriebe or is used as such. Suchchtbaustirnradgetriebe is then characterized due to the inventive design by a comparatively low weight, high mechanical rigidity and ease of manufacture.
  • the planetary gear can have at least two toothing planes, that is to say an asymmetrical toothing. It is also possible that the toothed contact between the planet gears or differential gears is located in an axially disposed plane above the smaller sun.
  • a substantially annular tool in the form of a fixing ring which holds a planet carrier half in an aligned welding position on the bridging component or the drive wheel, can also be used for the production or production of the integral connection.
  • the tool may have, arranged over its circumference, extending in the axial direction of the planetary gear pin.
  • the pins may be adapted to engage in appropriately configured fixing holes of the respective planet half.
  • the invention also relates to a method for producing and / or mounting a planetary gear.
  • the manufacturing process may include the following steps:
  • a drive wheel which is preferably designed as an externally toothed spur gear and with which also preferably a bridging component is either integrally formed or connected,
  • a one-part or multi-part planetary carrier which is preferably formed by two planetary carrier halves, which may be produced without cutting
  • the invention particularly relates to a planetary gear with at least one planet carrier, which is optionally pressed into a drive wheel of a planetary gear and additionally secured by means of a welded connection between the drive wheel and planet carrier.
  • the drive wheel can be designed rotationally symmetric and easier to build.
  • an asymmetrical toothing that is, two toothing planes in a differential toothing, be provided.
  • a toothed contact between the differential gears can be located in an axially arranged above or next to a smaller sun.
  • Fig. 1 shows an inventive planetary gear with a cohesive
  • FIG. 2 shows an enlarged detail of the integral connection shown in FIG. 1 between the bridging component and the planetary carrier in a longitudinal section
  • Fig. 3a shows an inventive planetary gear with a cohesive
  • 3b shows the planetary gear according to the invention from Figure 3a with a material connection between the bridging member and the planet carrier in a longitudinal section
  • Fig. 3c shows an enlarged detail of the material connection shown in Figure 3b between the bridging member and the planet carrier in a longitudinal section
  • Fig. 4a shows an inventive planetary gear with a cohesive
  • FIG. 4b shows the planetary gear according to the invention from FIG. 4a with a coherent connection between the bridging component and the planet carrier in a longitudinal section
  • FIG. 4c shows an enlarged detail of the cohesive connection between the bridging component and the planet carrier shown in FIG. 3b in a longitudinal section, and a schematic illustration of an alternative, materially separate embodiment of the drive wheel and the bridging component.
  • Fig. 1 the basic structure of a Planetengetrie- bes invention 1 is shown in a longitudinal section.
  • the planetary gear 1 is designed aschtbaustradradifferential, as used for example as an aggregate in a (not shown) final drive of a (also not shown) motor vehicle.
  • the planetary gear 1 has a drive wheel 2 designed as an external and helical spur gear, which merges in a radially inwardly directed direction into an annular bridging component 3, which in this embodiment is connected in one piece to the drive wheel 2 as a monolith component. That is, the lock-up member 3 is arranged in the radial direction of the planetary gear 1 within the drive wheel 2.
  • the planetary gear 1 has a two-part in this embodiment designed planet carrier 4, which has a first planet carrier half 5 and a second planet carrier half 6.
  • first planet carrier half 5 and second planet carrier half 6 are non-cutting, deep-drawn steel sheets, with the selected steel being distinguished by good weldability.
  • the planetary carrier halves 5 and 6 of the planet carrier 4 are each arranged in an axial end region of the drive wheel 2, so that they are in the installed state opposite and form a housing of the planetary gear 1.
  • the planetary gear 1 also has a first planetary gearset 7 and a second planetary gearset 8 and a first sun gear 9 and a second sun gear 10.
  • a torque introduced into the drive wheel 2 for example, from a transmission output shaft (not shown) via the bridging component 3 to the planet carrier 4, the first planetary gearset 7 or a second planetary gearset 8 and to the first sun gear 9 and the second sun gear 10, respectively.
  • the cohesive connections 1 1, 12 are each a welded connection, which can be produced for example by laser welding.
  • the cohesive connections 1 1, 12 are dimensioned and / or arranged such that the torque introduced into the drive wheel 2 is at least partially or better transmitted completely to the planet carrier 4.
  • the drive wheel 2 and the bridging member 3 can be structurally simple compared to the prior art.
  • the bridging member 3 formed integrally with the drive wheel 2 has an annular shape without ridges or flanges.
  • the bridging component 3 has a stepless, cylindrical, flangeless, featureless, smooth or continuous inner recess 13.
  • the drive wheel 2 and the bridging member 3 are rotationally symmetrical and are characterized by a comparatively simple manufacturability and a low weight. Accordingly, but also accounts for the planet carrier halves 5, 6 corresponding webs or flanges, so that the planet carrier halves 5, 6 are comparatively easy to produce.
  • the planetary gear 1 is characterized by a comparatively low overall weight.
  • FIG. 3a which shows the planetary gear 1 with the integral connection 12 between the bridging component 3 and the planet carrier half 6 of a first exemplary embodiment in a side view
  • the material-locking connection formed as a welded connection is designed to be circumferential.
  • FIGS. 3 b and 3 c which show a longitudinal section through the planetary gear 3 according to FIG. know that the rest, the basic structure of the planetary gear 3 is unchanged from the above description.
  • the cohesive connection 12 can also be embodied selectively or in sections instead of circulating.
  • the integral connection 12 embodied as a welded connection has three welds 14, 15 and 16, which are each arranged at a spacing of approximately 120 ° over the circumference of the components to be connected.
  • this embodiment is characterized by a relatively short production time.
  • the decision as to whether the cohesive connections 1 1, 12 are executed circumferentially or selectively or in sections can be made, for example, as a function of a respective customer request and / or the magnitude of the torque to be transmitted.
  • the manufacture or assembly of the planetary gear 1 can proceed as described below:
  • the drive wheel 2 which is designed here as an externally toothed spur gear and is formed in one piece with the bridging component 3,
  • a substantially annular tool (not shown) may also be used, which has pins extending in the axial direction of the planetary gear 1.
  • the pins may be distributed over the circumference of the tool and cooperate with fixing holes, which may be provided in the planet carrier halves 5, 6 respectively.
  • the bridging component 3 is not formed in one piece as a monolithic part with the drive wheel 2, but instead is formed materially separately and connected to the drive wheel 2 by means of a suitable connection type.
  • the bridging member 3 and the drive wheel 2 may initially be formed as material-separate components, which are then joined together.
  • the bridging member 3 and the drive wheel 2 are connected to each other by means of a cohesive connection and previous press-fitting.
  • the bridging component 3 and the drive wheel 2 to be screwed, riveted or connected to one another in a suitable manner. LIST OF REFERENCE NUMBERS

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Retarders (AREA)

Abstract

L'invention concerne un engrenage planétaire (1) pour un véhicule automobile. Cet engrenage est pourvu d'une roue motrice (2) permettant, par l'intermédiaire d'un porte-satellites (3), de transmettre un couple à un premier train planétaire (7) et/ou à un deuxième train planétaire (8) et à une première et/ou à une deuxième roue solaire (9, 10), et d'un élément de pontage (3), lequel peut être relié à la roue motrice (2) et/ou au porte-satellites (4). Selon l'invention, une liaison de matières (11, 12) est présente entre l'élément de pontage (3) et le porte-satellites (4), et dimensionnée pour transmettre 90 % à 100 % du couple appliqué dans la roue motrice (2).
PCT/DE2014/200103 2013-11-08 2014-03-03 Engrenage planétaire pourvu d'un porte-satellites relié par liaison de matières WO2015067247A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013018699.4 2013-11-08
DE102013018699 2013-11-08

Publications (1)

Publication Number Publication Date
WO2015067247A1 true WO2015067247A1 (fr) 2015-05-14

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Application Number Title Priority Date Filing Date
PCT/DE2014/200103 WO2015067247A1 (fr) 2013-11-08 2014-03-03 Engrenage planétaire pourvu d'un porte-satellites relié par liaison de matières

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DE (1) DE102014203830A1 (fr)
WO (1) WO2015067247A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016214015B4 (de) * 2016-07-29 2022-03-31 Schaeffler Technologies AG & Co. KG Planetendifferentialeinrichtung sowie Verfahren zur Fertigung der Planetendifferentialeinrichtung
DE102018130121A1 (de) 2018-11-28 2020-05-28 Schaeffler Technologies AG & Co. KG Planetengetriebe für ein Kraftfahrzeug mit einem Planetenradsatz mit dreifach gestuftem Planetenrad und drei Sonnenrädern sowie Antriebsstrang mit derartigem Planetengetriebe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544197A1 (de) * 1995-11-28 1997-06-05 Friedrich Hofacker Planetengetriebe
DE102007040475A1 (de) 2007-08-28 2009-03-05 Schaeffler Kg Stirnraddifferential
DE102007042801A1 (de) * 2007-09-07 2009-03-12 Schaeffler Kg Planetenträger
DE102011087076A1 (de) * 2011-11-25 2013-05-29 Schaeffler Technologies AG & Co. KG Planetenradträger
DE102011087579A1 (de) * 2011-12-01 2013-06-06 Schaeffler Technologies AG & Co. KG Stirnraddifferenzial mit auf Trägerteil zentriertem Antriebsrad
WO2013088860A1 (fr) * 2011-12-16 2013-06-20 アイシン・エィ・ダブリュ株式会社 Support planétaire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544197A1 (de) * 1995-11-28 1997-06-05 Friedrich Hofacker Planetengetriebe
DE102007040475A1 (de) 2007-08-28 2009-03-05 Schaeffler Kg Stirnraddifferential
DE102007042801A1 (de) * 2007-09-07 2009-03-12 Schaeffler Kg Planetenträger
DE102011087076A1 (de) * 2011-11-25 2013-05-29 Schaeffler Technologies AG & Co. KG Planetenradträger
DE102011087579A1 (de) * 2011-12-01 2013-06-06 Schaeffler Technologies AG & Co. KG Stirnraddifferenzial mit auf Trägerteil zentriertem Antriebsrad
WO2013088860A1 (fr) * 2011-12-16 2013-06-20 アイシン・エィ・ダブリュ株式会社 Support planétaire

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Publication number Publication date
DE102014203830A1 (de) 2015-05-13

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