EP3976996A1 - Porte-satellite comportant une ouverture d'introduction en périphérie extérieure permettant l'introduction radiale d'un solaire et de satellites - Google Patents

Porte-satellite comportant une ouverture d'introduction en périphérie extérieure permettant l'introduction radiale d'un solaire et de satellites

Info

Publication number
EP3976996A1
EP3976996A1 EP20733725.4A EP20733725A EP3976996A1 EP 3976996 A1 EP3976996 A1 EP 3976996A1 EP 20733725 A EP20733725 A EP 20733725A EP 3976996 A1 EP3976996 A1 EP 3976996A1
Authority
EP
European Patent Office
Prior art keywords
web
base plates
sun gear
insertion opening
carrier
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.)
Pending
Application number
EP20733725.4A
Other languages
German (de)
English (en)
Inventor
Matthias Biertz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aerospace Transmission Technologies GmbH
Original Assignee
Aerospace Transmission Technologies 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 Aerospace Transmission Technologies GmbH filed Critical Aerospace Transmission Technologies GmbH
Publication of EP3976996A1 publication Critical patent/EP3976996A1/fr
Pending legal-status Critical Current

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
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/082—Planet carriers
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • 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

Definitions

  • Planetary gear carrier with an outer circumferential insertion opening for the radial supply of a sun gear and planetary gears
  • the invention relates to a planet carrier and a
  • the planetary gear carrier has two spaced-apart base plates that are permanently connected to one another via webs.
  • the base plates are designed to accommodate a plurality of planet gears and a sun gear between them so that the planet gears with externally arranged gear rings can be brought into engagement with externally arranged gear rings on the sun gear.
  • Sun gears for aircraft turbines have one
  • Double helical teeth so that axial forces are avoided during operation.
  • the outer periphery is between the webs
  • the planetary gear carrier is mounted by first mounting and positioning the planetary gears through a central opening in one of the base plates.
  • a central sun gear is then introduced.
  • the sun gear is then not yet in meshing engagement with the planet gears. In order to provide the meshing engagement, these must be moved radially inwards onto the sun gear, since the gears move due to the double helical toothing is not possible in the axial direction. Only in this position can the planet gears be rotatably fixed to the base plates.
  • An object of the present invention is seen in ensuring that the planetary gear carrier can be assembled more easily. Furthermore, according to a further object, the production of the planetary gear carrier is to be simplified.
  • the tasks are achieved by a planet carrier and a method for manufacturing and also for assembling a
  • a planetary gear carrier is provided, in particular for a planetary gear of a transmission for a
  • Aircraft drive turbine the planetary gear carrier having two parallel spaced-apart base plates for receiving one
  • the central opening can have a diameter which is greater than an outer diameter of the planetary gears.
  • the planet gears do not have to fit through the central opening, since they can be mounted from the outside through the insertion position.
  • the planet gears weigh in
  • Aircraft propulsion turbines up to 50 kg. Installation by hand through the central opening is made even more difficult by sharp-edged teeth. Through the insertion opening the
  • Planet gears are easily introduced radially from the outside. During assembly, the planet gears no longer have to be held, they can be fixed directly to the base plates during assembly, at least the first two or three planet gears can be rotatably fixed between the base plates immediately after their introduction.
  • a central opening has to
  • Opening diameter which is smaller than a diameter of the sun gear, the insertion opening having a diameter which allows the sun gear to be introduced inwardly between the base plates against a radial direction.
  • the sun gear in addition to the planetary gears, is also introduced radially from the outside. Because it is no longer necessary to be able to insert the sun gear through the central opening, a central opening can be used
  • the assembly can now take place by first introducing several, preferably all, planet gears except for one radially inward and fixing them rotatably between the base plates.
  • the planetary gear carrier can be constructed in a more compact manner, because mobility in the radial direction outward away from the sun gear and back towards it opposite to the radial direction is no longer necessary.
  • the weight saving Due to the more compact structure of the planetary gear carrier, a weight saving can be achieved compared to planetary gear carriers with central gear assembly. Furthermore, the weight saved is on the outside of the planet carrier, since this can have a smaller diameter in the radial direction. As a result, the weight saving goes hand in hand with a considerable reduction in the mass inertia of the planetary gear carrier, which in turn increases the efficiency of the aircraft engine in which the planetary gear carrier is to be used.
  • a web is mounted at an insertion position, which after an insertion of the
  • the mounted bar closes the insertion opening and increases the rigidity of the planetary gear carrier.
  • a recess is present on each of the base plates, which has a cavity into which the web engages with an outer contour that fills the recess or cavity in a form-fitting manner.
  • the web engaging into the cavities on both sides provides a stable connection between the web and the base plates, which is immediately recognizable as such before the web is introduced, according to the poka yoke principle.
  • the web is with the
  • Base beams closing the insertion opening on both sides, welded.
  • the planet carrier can be opened in the embodiment with a screwed bar.
  • the base plates have an axial recess in the area of the insertion opening, so that a contact line between the web and the base plates is accessible from the radial inside and a weld seam can thus be applied to the contact line.
  • the web can be additionally secured by a weld seam applied from the inside.
  • the web is the insertion opening at one end in each case with the two base plates
  • the web was made by means of a build-up welding process in which a
  • Welding device which is designed to be guided along a contour of the web and thereby material
  • Deposition welding corresponds to a 3D printing process in which metal is applied directly and no sintering step is necessary. If necessary, there are still another
  • the same material can be used as it is also used for the base plates, or a material more suitable for build-up welding, or a softer material.
  • At least one web, which adjoins the insertion opening has a width, measured on the circumference, which is smaller than a width of further webs.
  • the bridge can be referred to as a narrow bridge. This narrow web is completed by a web plate that narrows the insertion opening and the web is closed off radially to the outside. Two adjacent webs can also have a smaller width in order to form an insertion opening.
  • a web can be missing at one point so that the sun gear and the planetary gears can be inserted, or one or two webs are made so narrow that there is a sufficiently large insertion opening between them for the radial introduction of the sun gear and the planetary gears.
  • a fully formed web surrounds the gears adjoining it.
  • the mounted web is formed from a material that has a higher elasticity and a lower hardness than a material from which the base plates are formed.
  • the web missing at the insertion opening or the web completing the narrow web on an upper side with the upper base plate and a lower side with the lower one Weld the base plate.
  • the web is in a radial direction
  • the weld seam on the inside can complement the weld seam on the outside.
  • the web or the connection between the web and the base plates can thus withstand greater loads.
  • the mountable web is screwed to the base plates.
  • the screw connection can be opened again more easily than a weld seam. Maintenance can thus be carried out on the planetary gear carrier even after operation.
  • the mountable web is between the base plates by means of a
  • Build-up welding process in which a welding device which is designed to be guided along a contour of the web and in the process to apply material is filled.
  • Build-up welding is a process in which a three-dimensional body, in this case the web, is formed in layers by following a contour and possibly also filling a body with a welding nozzle that applies material. This makes it almost one-piece
  • a material is welded on for the build-up welding of the web which has a higher elasticity and a lower hardness than a material from which the base plates are formed.
  • damping properties can be realized in the web.
  • a possible material for this is aluminum bronze or 2.0921 or CuA18.
  • a web can also be created by build-up welding
  • a natural frequency of the web can be increased or decreased in a targeted manner.
  • Fig. 2 a side view of the planet carrier from the prior art
  • Fig. 5 a planet carrier from a radial perspective, with a closed by a mountable web
  • FIG. 8 a web that can be mounted on the planetary gear carrier shown in FIG. 7, with an outer contour that fits into the recess on the base plates, and FIG
  • FIG. 1 shows a planetary gear carrier 3 from the prior art from an axial direction A.
  • FIG. 2 shows the planetary gear carrier 3 from the prior art from a radial direction R.
  • the planetary gear carrier 3 has two spaced-apart base plates 1 and 2, which are connected via webs 4 are inextricably linked.
  • the base plates 1 and 2 are designed to have several
  • the planetary gear carrier 3 is assembled by first the
  • Base plates 1 or 2 is mounted and positioned.
  • a central sun gear 5 is then introduced.
  • the central opening 9 has a diameter D1 which is greater than a diameter D2 of the sun gear 5
  • Sun gear 5 is then not yet in meshing engagement with the planetary gears 6. To provide the meshing engagement, they must be moved inwardly against the radial direction R on the sun gear 5, since due to a
  • Double helical toothing 8 a movement of the gears 5 and 6 against each other in the axial direction A is not possible. Only in this position can the planet gears 6 be rotatably fixed on the base plates 1 and 2.
  • FIG. 3 shows, from an axial direction A, planetary gear carrier 30, in particular for a planetary gear transmission, not shown.
  • FIG. 4 shows the planetary gear carrier 30, seen against a radial direction R.
  • the planetary gear carrier 30 has two
  • the base plates 10 and 20 des
  • Planetary gear carriers 30 are connected to one another via fixed bars 4 connected. Fixed means that the webs 4 cannot be detached from the base plates 10 and 20 without being destroyed.
  • the fixed webs 4 have at least one insertion opening 11
  • the insertion opening 11 has a width All which allows the sun gear 5 to be inserted inwardly between the base plates 10 and 20 counter to a radial direction R. In the one shown in FIG.
  • Embodiment there is no web at the insertion opening 11.
  • one of the webs is missing, which is particularly clear in FIG.
  • the remaining fixed webs 4 connect the base plates 10 and 20 to one another.
  • the planetary gear carrier 30 can be completed by mounting a mountable web 41 on the insertion opening 11 as shown in FIG.
  • the web 41 connects the base plates 10 and 20 to one another and, geometrically, the web 41 no longer differs from the fixed webs 4 after assembly.
  • a mobility of the planet gears 6 in the radial direction R as in the prior art according to FIGS. 1 and 2 is no longer required in the embodiments described herein because the gears 5 and 6 in a direction to the radial
  • Double helical gears 8 can be brought into meshing engagement with one another in this way.
  • base plates 10 and 20 can turn out to be smaller, which results in a lower mass inertia of the planetary gear carrier.
  • the planetary gear carrier 30 is essentially balanced with the mounted web 41; a subsequent balancing process may be necessary.
  • the mounted web 41 does not differ from the fixed webs 4.
  • FIG. 6 shows a planetary gear carrier 30, in which the web 42 is screwed at one end 14 to the two base plates 10 and 20 by means of screws 12 shown schematically.
  • FIG. 7 shows a planet gear carrier 30 on the base plates 10 and each has a recess 15 which has a cavity 16 into which the web 43 shown in FIG. 8 engages with an outer contour 17 that fills the cavity 16 or the recess 15 in a form-fitting manner.
  • the cavity 16 can have a rectangular shape, as shown, and a slot nut 18 that fits exactly into the rectangular cavity 16 can be provided on the web 43.
  • weld seam shown are applied to the web 43 with to connect the two base plates 10, 20 finally.
  • a welded connection between the base plates 10 and 20 with the web 41, 42 and 43 can be developed in that the web 41, 42, 43 through a recess 19 in the base plates 10 and 20 at a contact line 21 between the web 41, 42 and 43 and the base plates 10 and 20 remains accessible from the inside and is welded to the base plates 10 and 20 here.
  • the web which is not shown in FIG. 3 and is still missing, is hollow on the inside.
  • the contact line for a welding tool can be easily reached through the recess 19.
  • the inertia of the planetary gear carrier 30 can be further reduced by the hollow web 41.
  • Figure 9 shows a planetary gear carrier 30 with a narrow web 44, which the radial insertion of the gears 5 and 6 with
  • Double helical toothing 8 allowed, but afterwards still with one of the web elements 41, 42, 43 or 45 according to FIGS.
  • FIG. 10 shows, very schematically, a layered structure of a web 45 between the base plates 10 and 20 through a
  • a contour 51 of the web 45 is applied in layers by a welding device 52.
  • the welding device 52 can
  • Welding material can be fed in in the form of a wire or applied as a powder between welding processes.
  • the web 45 formed by the build-up welding in the 3D printing process can then with the appropriate choice of material and
  • Post-processing can hardly be distinguished from a web 4 previously formed in one piece with the base plates 10 and 20.
  • the webs 44 could also be made so narrow that an insertion opening 11 remains, as shown in FIG. This narrower fixed web 44 is also to be completed with one of the webs 41, 42, 43 or 45 or closed to the outside.
  • FIG. 11 clearly shows a sequence of process steps which can be used to manufacture a planet gear carrier 30 according to FIGS. 3 to 8. This is done in step 101
  • step 103 several can be arranged on the outside of the sun gear 5 are provided
  • step 103 the sun gear 5 is inserted counter to a radial direction R from the outside between the base plates through the insertion opening 11, at which the webs 4 are spaced apart from one another by a radial insertion allows. This is done in step 104
  • Step 104 can be carried out according to FIG. 5 by any method of mounting a web 41. Step 104 can take place by screwing the web 42 according to FIG.
  • the step 104 can also be implemented by a web 43, which has outer contours 17 which can be inserted into a recess 15 on the base plates 10 and 20. If necessary, the web 43, which is fitted with a positive fit in this way, is screwed or welded to the base plates 10 and 20. The welding can also be done by the
  • Recess 19 take place from the inside in the web (see Figure 3).
  • step 104 can also take place by inserting a web 45 corresponding to that shown in FIG.
  • Base plate 10 is built up until the web 45 is a second
  • a narrow web 44 can allow the radial insertion of the gears 5 and 6 with double helical teeth 8, but can be supplemented with one of the web elements 41, 42, 43 or 45 afterwards.

Abstract

L'invention concerne un porte-satellite (30) conçu en particulier pour une boîte de vitesses à trains épicycloïdaux d'une transmission pour une turbine d'entraînement d'aéronef. Ce porte-satellite (30) comprend deux plaques de base (10, 20) parallèles espacées l'une de l'autre conçues pour recevoir un solaire (5) et des satellites (6) pouvant être agencés tout autour et s'engrener avec le solaire (5), les plaques de base (10, 20) du porte-satellite étant reliées par l'intermédiaire d'éléments de liaison (4) et pouvant être désolidarisées de manière non destructive. Ces éléments de liaison (4) présentent, au moins au niveau d'une ouverture d'introduction (11) en périphérie extérieure, un espacement (A11) entre eux permettant l'introduction de satellites (6), à l'opposé d'une direction radiale (R), vers l'intérieur, entre les plaques de base (10, 20), et de venir au contact du solaire (5).
EP20733725.4A 2019-06-22 2020-06-15 Porte-satellite comportant une ouverture d'introduction en périphérie extérieure permettant l'introduction radiale d'un solaire et de satellites Pending EP3976996A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019004462 2019-06-22
PCT/EP2020/066503 WO2020260055A1 (fr) 2019-06-22 2020-06-15 Porte-satellite comportant une ouverture d'introduction en périphérie extérieure permettant l'introduction radiale d'un solaire et de satellites

Publications (1)

Publication Number Publication Date
EP3976996A1 true EP3976996A1 (fr) 2022-04-06

Family

ID=71108578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20733725.4A Pending EP3976996A1 (fr) 2019-06-22 2020-06-15 Porte-satellite comportant une ouverture d'introduction en périphérie extérieure permettant l'introduction radiale d'un solaire et de satellites

Country Status (3)

Country Link
EP (1) EP3976996A1 (fr)
DE (1) DE102020115733A1 (fr)
WO (1) WO2020260055A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10043564A1 (de) * 2000-09-01 2002-03-14 Flender A F & Co Planetenträger für ein Planetengetriebe
US7448980B2 (en) * 2005-05-09 2008-11-11 Timken Us Corporation Planetary gear assembly
US8667688B2 (en) 2006-07-05 2014-03-11 United Technologies Corporation Method of assembly for gas turbine fan drive gear system
DE102014214328A1 (de) * 2014-07-23 2016-01-28 Schaeffler Technologies AG & Co. KG Spannungsoptimierter Planetenträger
GB201820399D0 (en) * 2018-12-14 2019-01-30 Rolls Royce Plc Planet carrier and method of assembling of a planet carrier

Also Published As

Publication number Publication date
WO2020260055A1 (fr) 2020-12-30
DE102020115733A1 (de) 2020-12-24

Similar Documents

Publication Publication Date Title
EP2241781B2 (fr) Engrenage, notamment train épicycloïdal doté d'une bride et d'une roue creuse
DE112007003398B4 (de) Kugelumlaufspindelvorrichtung mit einem tunnelförmigen Laufring und ein Verfahren zur Herstellung derselben
EP3350464B1 (fr) Engrenage planétaire d'une éolienne avec roues planétaires à paliers lisses
EP2018475A1 (fr) Pale de rotor pour une éolienne
DE102014112552A1 (de) Exzenterschneckenpumpe
DE202016009022U1 (de) Verstellgetriebe
DE102010021668A1 (de) Werkzeugkopf
EP3708878A1 (fr) Porte-satellites
EP3141638B1 (fr) Dispositif de fixation pour elements de peigne sur un peigne rond
EP2703693A2 (fr) Support épicycloïdal
EP3557096B1 (fr) Méthode de compensation d'équilibrage et entraînement à vis à bille comprenant un élément de transmission de forces dimensionné avec cette méthode
EP2359029B1 (fr) Transmission
DE102004036336A1 (de) Gebautes Zahnrad
EP2767725A1 (fr) Tôle d'usure destinée à être introduite dans une poche de garniture d'un frein à disque
DE102011053651B4 (de) Spannvorrichtung und Spannverfahren zum kraftschlüssigen Festspannen von einem oder mehreren Werkstücken mit einer innenverzahnten Aufnahmebohrung
EP3976996A1 (fr) Porte-satellite comportant une ouverture d'introduction en périphérie extérieure permettant l'introduction radiale d'un solaire et de satellites
DE102008046821A1 (de) Kurbelwelle für eine Brennkraftmaschine mit varibaler Verdichtung und Brennkraftmaschine mit variabler Verdichtung
DE102020003346B3 (de) Umfangsstabmesserkopf
DE2649130B2 (de) Zahnradpumpe
DE19723608C2 (de) Falzapparat für Klappenfalz
DE102012112044A1 (de) Selbstfixierendes Statorgehäuse
DE19740850C2 (de) Verstellbeschlag zur Neigungsverstellung der Rückenlehne eines Kraftfahrzeugsitzes
DE3312921A1 (de) Umlaufender volumetrischer rootsverdichter sowie fuer den zusammenbau eines solchen verdichters verwendbares werkzeug
DE4406572A1 (de) Vorrichtung zur Versteifung einer Rotationsdruckmaschine
DE2100928A1 (de) Ballig-Walze mit einer Vorrichtung zur Einstellung der Sehnenhöhe der Walze

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220103

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)