WO2022033624A1 - Entraînement à vis à rouleaux planétaires - Google Patents

Entraînement à vis à rouleaux planétaires Download PDF

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Publication number
WO2022033624A1
WO2022033624A1 PCT/DE2021/100577 DE2021100577W WO2022033624A1 WO 2022033624 A1 WO2022033624 A1 WO 2022033624A1 DE 2021100577 W DE2021100577 W DE 2021100577W WO 2022033624 A1 WO2022033624 A1 WO 2022033624A1
Authority
WO
WIPO (PCT)
Prior art keywords
planetary
planetary roller
roller carrier
screw drive
housing part
Prior art date
Application number
PCT/DE2021/100577
Other languages
German (de)
English (en)
Inventor
Philippe Ott
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 WO2022033624A1 publication Critical patent/WO2022033624A1/fr

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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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
    • F16H25/2252—Planetary rollers between nut and screw
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H2025/2481—Special features for facilitating the manufacturing of spindles, nuts, or sleeves of screw devices
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H2025/249—Special materials or coatings for screws or nuts

Definitions

  • the present invention relates to a planetary screw drive, in particular as part of an actuator of a release system for a clutch device of a motor vehicle.
  • actuating devices are required, which are also called actuators or actuators, and with which a required force can be generated over a corresponding path.
  • actuators that convert the rotational movement of a component into an axial movement of another component, e.g. to open or close a clutch.
  • Typical actuators are hydraulic slave cylinders or planetary screw (spindle) drives.
  • a planetary rolling thread comprises at least one threaded spindle with an axis of rotation extending along an axial direction, a plurality of planetary rollers which mechanically engage with the threaded spindle and are each arranged to be rotatable about their own longitudinal axis, each of which has a cylindrical shoulder on which several circumferential grooves form a structure form, which meshes with a thread of the threaded spindle, a planetary roller carrier, which supports the planetary rollers at least with respect to the axial direction, and a housing part in which the planetary roller carrier is arranged.
  • the threaded spindle With a rotation z. B. the planetary roller carrier to the threaded spindle or the axis of rotation, the threaded spindle is displaced relative to the planetary roller carrier along an axial direction.
  • the housing part can, for. B. be connected to a rotor of an electric drive, so that the housing part and thus the planetary roller carrier is rotated relative to the threaded spindle by rotation of the rotor.
  • the planetary roller screw drive can have an at least two-part cassette as a planetary roller carrier, which is used to accommodate the planetary rollers with an exact angular position and which is supported axially by the housing part.
  • the parts of the cassette can have shaped elements, so that when there is a mechanical operative connection between the shaped elements, the two cassette parts are positioned in a defined manner with regard to their angular position in relation to one another.
  • the planetary roller carrier or at least one of the cassette parts can have at least one further shaped element, which interacts with a correspondingly designed shaped element of the housing part, so that when there is a mechanical operative connection between the shaped elements, a relative rotational movement of the planetary roller carrier or the respective cassette part in relation to the housing part is blocked. This connection is used to transmit torque between the housing part and the planetary roller carrier.
  • this shaped element between the cassette part and the housing part is a bendable sheet metal tongue on the housing part, which in the bent state engages in a complementary shaped shaped element in the form of a recess in a cassette part.
  • the affected components In order to form the shaped elements, the affected components sometimes have to be mechanically processed in a complex manner. To ensure dimensional accuracy, it may be necessary for this processing to take place only after the material has increased in hardness (e.g. as a result of heat treatment).
  • the object of the present invention is to at least partially overcome the problems known from the prior art and in particular to specify a planetary screw drive in which reliable torque transmission between the components can be realized and which can be produced inexpensively.
  • a planetary screw drive is proposed, in particular as a component of an actuator of a release system for a clutch device of a motor vehicle.
  • the planetary screw drive includes at least
  • the threaded spindle When the planetary roller carrier rotates about the threaded spindle, the threaded spindle can be displaced in an axial direction relative to the planetary roller carrier.
  • the planetary roller carrier and the housing part Via the contact surfaces, the planetary roller carrier and the housing part form a first connection that is form-fitting relative to a circumferential direction.
  • At least one of the contact surfaces has a surface structure through which the other contact surface can be deformed at least partially when the planetary screw drive is assembled to form the first connection.
  • the threaded spindle is in particular (only) rotatable relative to the planetary roller carrier.
  • the threaded spindle can be displaced relative to the planetary roller carrier along the axial direction.
  • the threaded spindle has a thread so that the threaded spindle can be successively displaced as a function of a thread pitch as a result of the meshing arrangement with the planetary rollers.
  • the structure of the planetary rollers rolls up P200958
  • Each planetary roller has a longitudinal axis, which is arranged in particular parallel to the axis of rotation, and is arranged on the planetary roller carrier such that it can rotate about this longitudinal axis.
  • the housing part can, for. B. be connected to a rotor of an electric drive, so that the housing part and thus the planetary roller carrier and the associated planetary rollers relative to the threaded spindle and rotated about the axis of rotation by rotation of the rotor.
  • the planetary roller carrier and the housing part form a first connection that is form-fitting relative to a circumferential direction via the contact surfaces.
  • first connection in particular only one of the contact surfaces has a surface structure which engages in the contact surface of the other component during assembly of the planetary roller carrier and housing part and forms a complementary surface structure there.
  • the deformation of the other contact surface by the surface structure includes in particular a displacement of material.
  • this type of first connection means that the planetary roller carrier and the housing part do not have to be aligned with one another, at least with respect to a circumferential direction, before assembly. Furthermore, a torque acting in the circumferential direction can be transmitted without play (relative to the circumferential direction) by the first connection designed in this way. Furthermore, the torque, distributed uniformly along the circumferential direction, can be transmitted between the planetary roller carrier and the housing part.
  • the surface structure can B. be made by a knurling process.
  • knurling When knurling, a round workpiece is pressed against a round tool that has the surface structure and rolled over one another so that both rotate. The surface structure of the tool is transferred to the workpiece. So e.g. B. elevations on the surface of the tool are pressed into the surface of the workpiece.
  • At least one of the contact surfaces is formed by a plastic material.
  • the other (or at least one) contact surface is formed by a metallic material, e.g. B. by a ferrous material, preferably by a steel.
  • the contact surface with the higher strength has the surface structure.
  • the surface structure can thus be used to deform the other contact surface during assembly of the components.
  • the planetary roller carrier and the housing part are made of materials whose coefficients of thermal expansion [1/Kelvin] differ from one another by at most 10%, preferably by at most 5%.
  • a low backlash (relative to the circumferential direction) and a constant pressure between the housing part and the planetary roller carrier (eg relative to a radial direction) can be ensured during operation of the planetary roller screw drive.
  • the contact surfaces are arranged concentrically to one another, with a largest outer diameter of the first contact surface being larger than a smallest inner diameter of the second contact surface.
  • the contact surfaces thus overlap in the radial direction, so that a surface structure on one contact surface can be used to deform or reshape the other contact surface.
  • a first connection can be realized in the manner of a toothing or a splined toothing.
  • the planetary roller carrier is designed in several parts (like a cassette) and comprises at least a first part with first receptacles and a second part with second receptacles for the planetary rollers, with the first part and the second part forming a second connection that is form-fitting relative to the circumferential direction.
  • Each planetary roller extends in particular starting from a first end along the longitudinal axis towards a second end. Every first P200958
  • each alternate end is located in a second receptacle.
  • the planetary rollers can be identical or different from each other. Particularly in the embodiment with planetary rollers of the same construction, it is provided that at least one of the (cassette) parts for each planetary roller to be arranged therein has a receptacle with a shoulder of different axial extent. This shoulder is used for the axially offset arrangement of a respective planetary roller that is supported on it in relation to the axial direction, in order to ensure that a respective planetary roller has a defined position in relation to the axial direction for proper engagement in the thread of the threaded spindle.
  • the axial position here refers to the axis of rotation of the centrally located threaded spindle.
  • a friction element for axially supporting a respective planetary roller can be arranged on at least one of the (cassette) parts or in at least one of the receptacles.
  • This friction element which is also referred to as a friction plate, is arranged, for example, in the receptacle or on a bearing journal of a planetary roller or else on a front shoulder of the planetary roller.
  • the material pairing of planetary roller and friction element should preferably have a coefficient of friction p ⁇ 0.15.
  • only one of the parts forms the form-fitting first connection with the housing part.
  • both parts each form a form-fitting first connection with the housing part.
  • a method for producing the described planetary roller screw drive is also proposed, at least having the following steps: a) providing at least the planetary roller carrier and the planetary rollers; P200958
  • Steps a) and b) can in particular be carried out in different sequences.
  • the threaded spindle can be provided before step c), possibly together with the planetary roller carrier. Steps a) to c) take place in particular in the specified order.
  • the contact surfaces are arranged concentrically to one another, with a largest outer diameter of the first contact surface being larger than a smallest inner diameter of the second contact surface.
  • the contact surfaces thus overlap in the radial direction, so that a surface structure on one contact surface can be used to deform or reshape the other contact surface.
  • the assembly takes place in particular by pushing the planetary roller carrier into the housing part along the axial direction.
  • a first connection can be realized in the manner of a toothing or a splined toothing.
  • At least one of the planetary roller carrier and the housing part is at least partially made of a metallic material.
  • the material is first mechanically processed to form the surface structure and then the material is hardened to increase the hardness of the material.
  • an actuator which has the described planetary roller screw drive and a rotary drive device mechanically coupled to the planetary roller screw drive for driving an element of the planetary roller screw drive for the purpose of realizing a translational movement.
  • the actuator according to the invention can also be referred to as a modular clutch actuator (MCA).
  • MCA modular clutch actuator
  • the translational movement is carried out by an element of the planetary screw drive, such as the threaded spindle, which is supported in a rotationally fixed manner, and used to actuate a clutch device for the purpose of opening or closing.
  • the planetary roller carrier of the planetary roller screw drive is non-rotatably connected to a rotor of the drive device, here the housing part, with which the planetary roller carrier can be driven about its central axis of rotation, so that the threaded spindle is displaced in translation.
  • a release system for a clutch device of a motor vehicle which has the actuator described and an interface for transmitting a generated translational movement to the clutch device
  • indefinite articles (“a”, “an”, “an” and “an”), particularly in the claims and the description reflecting them, is to be understood as such and not as a numeral.
  • indefinite articles (“a”, “an”, “an” and “an”), particularly in the claims and the description reflecting them, is to be understood as such and not as a numeral.
  • Correspondingly introduced terms or components are to be understood in such a way that they are present at least once and in particular can also be present several times.
  • first”, “second”, ... ) primarily (only) serve to distinguish between several similar objects, sizes or processes, i.e. in particular no dependency and/or sequence of these objects, sizes or make processes mandatory for each other. Should a dependency and/or order be required, this is P200958
  • Fig. 1 a first embodiment of a known
  • FIG. 2 a housing part of the planetary screw drive according to FIG. 1 in a perspective view
  • FIG. 3 a planetary roller carrier of the planetary screw drive according to FIG. 1 in a perspective view
  • Fig. 4 a second embodiment of a known
  • FIG. 5 a planetary roller carrier of the planetary screw drive according to FIG. 4 in a perspective view
  • FIG. 7 a planetary roller carrier of the planetary screw drive according to FIG. 6 in a perspective view in section;
  • FIG. 8 shows the planetary roller carrier according to FIG. 7 in an exploded perspective view in section
  • FIG. 9 a housing part of the planetary screw drive according to FIG. 6 in a perspective view in section; FIG. and
  • FIG. 1 shows a first embodiment of a known planetary screw drive 1 in a side view in section.
  • FIG. 2 shows a housing part 12 of the planetary screw drive 1 according to FIG. 1 in a perspective view.
  • FIG. 3 shows a planetary roller carrier 10 of the planetary roller screw drive 1 according to FIG. 1 in a perspective view. 1 to 3 are described together below.
  • a planetary rolling thread 1 comprises at least one threaded spindle 2 with an axis of rotation 4 extending along an axial direction 3, a plurality of planetary rollers 6 which mechanically engage with the threaded spindle 2 and are each arranged to be rotatable about their own longitudinal axis 5, each of which has a cylindrical shoulder 7 on which a plurality of circumferential grooves 8 form a structure which meshes with a thread 9 of the threaded spindle 2, a planetary roller carrier 10 which supports the planetary rollers 6 at least with respect to the axial direction 3, and a housing part 12 in which the planetary roller carrier 10 is arranged.
  • the planetary roller carrier 10 and the housing part 12 are connected via shaped elements in such a way that a first connection 15 is formed which is form-fitting relative to the circumferential direction 14 .
  • the planetary roller carrier 10 is made in two parts here.
  • the housing part 12 can, for. B. be connected to a rotor of an electric drive, so that the housing part 12 and thus the planetary roller carrier 10 is rotated relative to the threaded spindle 2 by rotation of the rotor.
  • FIG. 4 shows a second embodiment of a known planetary screw drive 1 in a perspective view in a side view in section.
  • FIG. 5 shows a planetary roller carrier 10 of the planetary roller screw drive 1 according to FIG. 4 in a perspective view.
  • Figures 4 and 5 are described together below. Reference is made to the statements relating to FIGS.
  • the planetary roller screw drive 1 according to DE 102017 125 149 A1 has an at least two-part cassette as a planetary roller carrier 10, which serves to accommodate the planetary rollers 6 with precise angular positions and which is supported axially by the housing part 12.
  • the parts 19, 21 of the cassette can have shaped elements, so that when there is a mechanical operative connection between the shaped elements, the two cassette parts are positioned in a defined manner in relation to one another via the second connection 23 in terms of their angular position.
  • the planetary roller carrier 10 or at least one of the cassette parts can have at least one further shaped element, which interacts with a correspondingly designed shaped element of the housing part 12, so that when there is a mechanical operative connection between the shaped elements, a relative rotational movement of the planetary roller carrier 10 or the respective cassette part in relation to the housing part 12 is blocked.
  • This first connection 15 serves to transmit torque between the housing part 12 and the planetary roller carrier 10.
  • this shaped element between the second part 21 of the planetary roller carrier 10 and the housing part 12 is a bendable sheet metal tongue on the housing part 12, which in the bent state becomes a shaped element with a complementary design engages the form of a recess of a cassette part.
  • FIG. 6 shows a planetary screw drive 1 in a side view in section.
  • FIG. 7 shows a planetary roller carrier 10 of the planetary screw drive 1 according to FIG. 6 in a perspective view in section.
  • FIG. 8 shows the planetary roller carrier 10 according to FIG. 7 in an exploded perspective view in section.
  • FIG. 9 shows a housing part 12 of the planetary screw drive 1 according to FIG. 6 in a perspective view in section.
  • FIG. 10 shows part of the multi-part planetary roller carrier 10 according to FIGS. 7 and 8 in a perspective view. Figures 6 through 10 are described together below. Reference is made to the comments relating to FIGS.
  • the planetary roller screw drive 1 comprises a threaded spindle 2 with an axis of rotation 4 extending along an axial direction 3, a plurality of planetary rollers 6 which mechanically engage with the threaded spindle 2 and are each arranged to be rotatable about their own longitudinal axis 5, each of which has a cylindrical shoulder 7 , on which several circumferential grooves 8 form a structure that meshes with a thread 9 of the threaded spindle 2, a planetary roller carrier 10, which supports the planetary rollers 6 at least with respect to the axial direction 3, with a first contact surface 11, and a housing part 12 with a second contact surface 13
  • the threaded spindle 2 can be displaced in relation to the planetary roller carrier 10 along an axial direction 3 .
  • the planetary roller carrier 10 and the housing part 12 form a positive first connection 15 with respect to a circumferential direction 14 via the contact surfaces 11 , 13 .
  • At least one of the contact surfaces 11, 13 has a surface structure 16, through which the other contact surface 13, 11 is at least partially deformable during assembly of the planetary screw drive 1 to form the first connection 15.
  • the threaded spindle 1 When rotating relative to the planetary roller carrier 10, the threaded spindle 1 can be displaced relative to the planetary roller carrier 10 along the axial direction 3.
  • the threaded spindle 2 has a thread 9, so that the threaded spindle 2 can be displaced successively along the axial direction 3 as a result of the meshing arrangement with the planetary rollers 6, depending on a thread pitch.
  • the structure of the planetary rollers 6 rolls on the thread 9 of the threaded spindle 2 .
  • Each planetary roller 6 has a longitudinal axis 5 which is parallel to the axis of rotation 4 P200958
  • the housing part 12 can, for. B. be connected to a rotor of an electric drive, so that the housing part 12 and thus the planetary roller carrier 10 and the associated planetary rollers 6 relative to the threaded spindle 2 and about the axis of rotation 4 are rotated by rotation of the rotor.
  • the planetary roller carrier 10 and the housing part 12 form a first connection 15 that is form-fitting relative to a circumferential direction 14 via the contact surfaces 11 , 13 .
  • first connection 15 in particular only one of the contact surfaces 11, 13 has a surface structure 16, which engages in the contact surface 11, 13 of the other component during assembly of the planetary roller carrier 10 and housing part 12 and forms a complementary surface structure 16 there.
  • the deformation of the other contact surface 13, 11 by the surface structure 16 includes in particular a displacement of material.
  • This type of first connection 15 makes it possible, in particular, for the planetary roller carrier 10 and the housing part 12 not to have to be aligned with one another, at least with respect to a circumferential direction 14, before assembly. Furthermore, a torque acting in the circumferential direction 14 can be transmitted without play (relative to the circumferential direction 14) by the first connection 15 designed in this way. Furthermore, the torque, distributed uniformly along the circumferential direction 14 , can be transmitted between the planetary roller carrier 10 and the housing part 12 .
  • the surface structure 16 can, for. B. be produced by a knurling process (see surface structure Fig. 9 and 10).
  • the contact surfaces 11, 13 are arranged concentrically to one another, with a largest outer diameter 17 of the first contact surface 11 (see FIG. 10) being larger than a smallest inner diameter 18 of the second contact surface 13 (see FIG. 9).
  • the contact surfaces 11, 13 overlap in the radial direction 24, so P200958
  • a surface structure 16 can be used on one contact surface 11, 13 for deforming or reshaping the other contact surface 13, 11.
  • a first connection can be realized in the manner of a toothing or a wedge toothing (see FIGS. 9 and 10).
  • the planetary carrier 10 is made of a plastic material and has no surface structure 16 prior to assembly.
  • the surface structure 16 is in particular only provided on the housing part 12 and is embossed onto the first contact surface 11 as part of step c) of the method.
  • the planetary roller carrier 10 is designed in several parts (like a cassette) and comprises at least a first part 19 with first receptacles 20 and a second part 21 with second receptacles 22 for the planetary rollers 6, the first part 19 and the second part 21 having shaped elements ( compare FIGS. 4 and 5) form a second connection 23 that is form-fitting relative to the circumferential direction 14 .
  • Each planetary roller 6 extends in particular starting from a first end along the longitudinal axis 5 towards a second end. Each first end is positioned in a first receptacle 20 and each second end is positioned in a second receptacle 22 .
  • the planetary rollers 6 can be identical in construction or different from one another. Particularly in the embodiment with identical planetary rollers 6, at least one of the (cassette) parts 19, 21 for each planetary roller 6 to be arranged therein has a receptacle 20, 22 with a shoulder of different axial extent. This shoulder is used for the axially offset arrangement of a respective planetary roller 6, which is supported on it in relation to the axial direction 3, in order to ensure that a respective planetary roller 6 has a defined position in relation to the axial direction 3 for clean engagement in the thread 9 of the threaded spindle 2.
  • the axial position here refers to the axis of rotation 4 of the centrally located threaded spindle 2.
  • a friction element for the axial support of a respective planetary roller 6 can be arranged on at least one of the (cassette) parts 19, 21 or in at least one of the receptacles 20, 22.
  • This friction element which is also referred to as a friction plate, is arranged, for example, in the receptacle 20, 22 or on a bearing journal of a planetary roller 6 or also on a front shoulder of the planetary roller 6.
  • both parts 19, 21 each form a form-fitting first connection 15 with the housing part 12.
  • the planetary roller screw drive 1 is assembled by pushing the planetary roller carrier 10 or both parts 19, 21 into the housing part 12 along the axial direction 4.
  • a first connection 15 can thus be realized in the manner of a toothing or a splined toothing (see Fig. 9 and 10.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

Entraînement à vis (1) à rouleaux planétaires, l'entraînement comprenant au moins une tige filetée (2) dotée d'un axe de rotation (4) s'étendant le long d'une direction axiale (3), d'une pluralité de rouleaux planétaires (6) destinés à entrer en prise mécaniquement avec la tige filetée (2) et étant chacun rotatif autour d'un axe longitudinal respectif (5) et comportant chacun un épaulement cylindrique (7) sur lequel plusieurs rainures circonférentielles (8) forment une structure s'engrenant avec un filet (9) de la tige filetée (2), d'un support (10) de rouleaux planétaires destiné à soutenir les rouleaux planétaires (5) au moins par rapport à la direction axiale (3) et présentant une première surface de contact (11), et d'une partie enveloppe (12) dotée d'une seconde surface de contact (13). Lorsque le support (10) de rouleaux planétaires tourne autour de la tige filetée (2), la tige filetée (2) peut être déplacée par rapport au support (10) de rouleaux planétaires le long de la direction axiale (3).
PCT/DE2021/100577 2020-08-10 2021-07-05 Entraînement à vis à rouleaux planétaires WO2022033624A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020120965.7 2020-08-10
DE102020120965.7A DE102020120965A1 (de) 2020-08-10 2020-08-10 Planetenwälzgewindetrieb

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WO2022033624A1 true WO2022033624A1 (fr) 2022-02-17

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007026605A1 (de) * 2007-06-08 2008-12-11 Schaeffler Kg Kugelgewindetrieb
DE102016210190A1 (de) * 2015-06-09 2016-12-15 Schaeffler Technologies AG & Co. KG Aktor mit Planetenwälzgewindespindel
EP3312472A1 (fr) * 2016-10-24 2018-04-25 SFS Intec Holding AG Vis d'entraînement à bille
DE102017125149A1 (de) 2017-10-26 2019-05-02 Schaeffler Technologies AG & Co. KG Planetenwälzgewindetrieb, Aktuator und Ausrücksystem
DE102018108338A1 (de) * 2018-04-09 2019-10-10 Schaeffler Technologies AG & Co. KG Planetenwälzgetriebe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007026605A1 (de) * 2007-06-08 2008-12-11 Schaeffler Kg Kugelgewindetrieb
DE102016210190A1 (de) * 2015-06-09 2016-12-15 Schaeffler Technologies AG & Co. KG Aktor mit Planetenwälzgewindespindel
EP3312472A1 (fr) * 2016-10-24 2018-04-25 SFS Intec Holding AG Vis d'entraînement à bille
DE102017125149A1 (de) 2017-10-26 2019-05-02 Schaeffler Technologies AG & Co. KG Planetenwälzgewindetrieb, Aktuator und Ausrücksystem
DE102018108338A1 (de) * 2018-04-09 2019-10-10 Schaeffler Technologies AG & Co. KG Planetenwälzgetriebe

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