WO2020001686A1 - Entraînement fileté et actionneur linéaire comportant cet entraînement fileté - Google Patents

Entraînement fileté et actionneur linéaire comportant cet entraînement fileté Download PDF

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Publication number
WO2020001686A1
WO2020001686A1 PCT/DE2019/100538 DE2019100538W WO2020001686A1 WO 2020001686 A1 WO2020001686 A1 WO 2020001686A1 DE 2019100538 W DE2019100538 W DE 2019100538W WO 2020001686 A1 WO2020001686 A1 WO 2020001686A1
Authority
WO
WIPO (PCT)
Prior art keywords
nut
bearing
screw drive
axial
axis
Prior art date
Application number
PCT/DE2019/100538
Other languages
German (de)
English (en)
Inventor
Alexander Hausmann
Daniel Faber
Benjamin Wübbolt-Gorbatenko
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 WO2020001686A1 publication Critical patent/WO2020001686A1/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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0442—Conversion of rotational into longitudinal movement
    • B62D5/0451—Roller spindle drives
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
    • F16C19/305—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly consisting of rollers held in a cage
    • 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
    • F16H25/2454—Brakes; Rotational locks
    • 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
    • F16H25/2472—Safety nuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
    • B62D7/15—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
    • B62D7/1581—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels characterised by comprising an electrical interconnecting system between the steering control means of the different axles
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/30—Angles, e.g. inclinations
    • 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
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2081—Parallel arrangement of drive motor to screw axis
    • 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
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2096—Arrangements for driving the actuator using endless flexible members

Definitions

  • the present invention relates to a screw drive and a linear actuator with this screw drive, in particular for a rear axle steering of a motor vehicle.
  • a rear axle steering system is known from DE 10201410019 A1, which has a linear actuator, the wheel guide element of which links the two wheels of an axle.
  • the linear actuator has a threaded drive formed by a ball screw drive.
  • This linear actuator has a housing in which the screw drive is accommodated, the nut rotatably mounted in the housing being driven in rotation by an electric motor.
  • the nut is mounted in the housing by means of a deep groove ball bearing.
  • the nut is arranged on a threaded spindle which is moved axially relative to the nut when the nut is actuated.
  • the threaded spindle is part of the wheel guide element and is connected at its two axial ends to track control arms which link the two wheels.
  • a blocking device that prevents axial displacement of the threaded spindle when the electric motor is de-energized.
  • This blocking device comprises a disk with recesses, an electromagnet, and bolts which are actuated by the electromagnet and which can engage in these recesses.
  • the screw drive has: a housing, and a rotationally drivable nut, which is arranged on a threaded spindle that is axially displaceable relative to the nut, and an axial roller bearing for axially supporting the nut on the housing.
  • the axial roller bearing has rod-shaped rolling elements which are distributed over the circumference and are designed as rollers and which roll on raceways of the axial roller bearing.
  • Such screw drives are usually provided with easily rotatable nuts in order to avoid unwanted friction.
  • the external axial load can produce an undesirable rotational movement of the nut.
  • the object of the present invention was to provide a screw drive according to the preamble of claim 1, the nut of which does not carry out any undesired rotary movements under axial load on the threaded spindle.
  • the screw drive according to the invention has: a housing and a nut which is arranged on a threaded spindle which is axially displaceable relative to the rotatable nut, and an axial roller bearing for axially mounting the nut on the housing.
  • the axial rolling bearing has rod-shaped rolling elements distributed over the circumference, which roll on raceways of the axial rolling bearing.
  • the screw drive can be designed as a trapezoidal screw drive, ball screw drive, roller screw drive and in particular as a planetary roller screw drive.
  • the design of the lead screw, the size of the lead, and internal friction determine its ability to hold the lead screw in an axial position under an axial load on the lead screw when the lead screw is not actively driven.
  • the mother can be driven by rotation.
  • its cage can be driven in rotation, in whose pockets planets are arranged.
  • At least one of the rod-shaped rolling elements of the axial rolling bearing is designed as a friction rolling element, the axis of rotation of which is arranged at a radial distance from the bearing axis of the axial rolling bearing.
  • the bearing axis and the spindle axis of the threaded spindle coincide.
  • the rod-shaped rolling elements designed as needles or rollers are usually arranged in a star shape around the bearing axis of the axial rolling bearing, the axes of rotation of these rolling elements intersecting the bearing axis of the axial rolling bearing, that is to say they are not arranged at a radial distance from the rolling bearing axis.
  • the friction roller body is inclined at an angle alpha in the plane of the axial roller bearing.
  • a straight line which, starting from the bearing axis of the axial roller bearing, intersects the axis of rotation of the friction roller body in its axial center, forms one leg of the angle alpha.
  • the axis of rotation of the friction roller forms the other leg of the angle alpha.
  • the axis of rotation of the at least one friction rolling element lies in a plane which is arranged transversely to the bearing axis of the axial rolling bearing and intersects a normal to the bearing axis, which likewise lies in this plane.
  • the normal and the axis of rotation intersect at an angle alpha.
  • This angle alpha is greater than zero degrees and can be up to 45 degrees.
  • the larger this angle alpha the higher the proportion of sliding friction in the frictional contact between the friction rolling element and the raceway.
  • the frictional force depends on the axial load on the threaded spindle. An angle of approximately 20 degrees with a certain number of friction rolling elements has proven to be sufficient to keep the overall efficiency of the screw drive below 50 percent.
  • a frictional torque is generated as a product of the frictional force with its effective lever arm about the axis of rotation of the nut.
  • the Frictional force acts between the raceways and the friction rolling elements.
  • One raceway is assigned to the nut, the other raceway is assigned to the housing.
  • the frictional force acts between the nut and the housing.
  • the axial roller bearing can be dimensioned such that the overall efficiency of the screw drive is limited to a maximum of 50%. Screw drives are self-locking below this level of efficiency (see the Roloff Matek textbook, “Machine Elements, 18th Edition, Section 8.5.5.).
  • the axial roller bearing according to the invention provides a sufficient friction torque which ensures that the nut remains stationary with respect to the threaded spindle when axial loads act on the threaded spindle.
  • the screw drive is preferably provided with a plurality of friction roller bodies distributed over the circumference, all of which, with their axis of rotation, touch a circle drawn around the spindle axis or the axis of the axial roller bearing. In this way, the frictional forces can act evenly distributed over the circumference.
  • At least one pair of friction rolling elements is advantageously provided, the axes of rotation of which are arranged parallel to one another. This symmetry can simplify the manufacture of the axial roller bearing and at the same time contributes to a symmetrical distribution of the frictional forces.
  • the axial roller bearing can have two bearing disks, on the facing end faces of which the raceways are formed, one bearing disk being associated with the housing and the other bearing disk being associated with the nut.
  • the bearing disk on the housing side can be secured against rotation in relation to the housing.
  • the nut-side bearing washer can be secured against rotation with respect to the nut.
  • the screw drive according to the invention is preferably formed by a planetary roller screw drive with axially preloaded planets, which are distributed over the circumference between the nut and the threaded spindle, the nut having a sleeve and two nut parts divided transversely to the longitudinal axis, between which one Spacer is arranged. The spacer keeps the two nut parts at a predetermined distance, in which a clearance of the planetary roller screw drive is guaranteed.
  • Such known planetary roller screws are characterized by a high positioning accuracy.
  • Such planetary roller screws can have an efficiency greater than 50%, so that the overall efficiency can be limited to at most 50% by means of the axial roller bearing provided according to the invention. In any case, sufficiently high friction losses can be provided, so that an undesired rotation of the nut with respect to the threaded spindle is excluded in the case of large axial loads.
  • the planets are arranged in pockets of a common cage and the cage is driven in rotation by an electric motor. If the cage rotates around the non-rotatable threaded spindle, the nut with which the planet meshes must be rotated.
  • the axial bearing of the nut according to the invention enables the above-described rotation inhibition of the nut when the electric motor is switched off and axial loads are passed onto the planet via the threaded spindle and via the nut and the axial roller bearing into the housing.
  • the sleeve of the nut can have an end section provided with a drive wheel, for example a belt wheel of a traction mechanism drive, which is arranged axially adjacent to a central section of the sleeve which receives the two nut parts.
  • the electric motor driving the nut can be arranged outside the housing section in which the nut is received.
  • the end section of the sleeve can be passed through an annular gap between the housing and the threaded spindle.
  • the drive wheel is arranged in a rotationally fixed manner outside this housing section on this end section.
  • This linear actuator is preferably developed for a rear axle steering of a motor vehicle, the wheel guide element of which links two wheels of an axle, the threaded spindle being part of the wheel guide element.
  • FIG. 1 shows a linear actuator according to the invention in longitudinal section
  • Figure 2 shows a screw drive according to the invention of the linear actuator from Figure 1 in longitudinal section
  • FIG. 3 shows a view of the screw drive from FIG. 2
  • FIG. 4 shows a load case of the linear actuator from FIG. 1
  • FIG. 5 shows another load case of the linear actuator from FIG. 1
  • Figure 6 shows an axial roller bearing of the screw drive
  • Figure 7 shows the axial rolling bearing of Figure 6 in longitudinal section
  • Figure 8 shows the axial rolling bearing of Figure 6 in an exploded view
  • FIG. 9 shows a detail of the axial roller bearing from FIG. 6
  • Figure 10 shows the linear actuator according to the invention in a perspective view
  • Figure 1 1 is a bottom view of a motor vehicle with rear axle steering with the
  • Linear actuator from Figure 10 and FIG. 12 shows a detail from FIG. 1 1.
  • FIG. 1 shows in longitudinal section a linear actuator which is designed for flinter axle steering of a motor vehicle. This linear actuator is equipped with a screw drive.
  • the screw drive comprises a nut 2 rotatably arranged on a threaded spindle 1.
  • the threaded spindle 1 which is arranged in a rotationally fixed manner, is displaced along its longitudinal axis relative to the nut 2.
  • An axial roller bearing 3 and a radial roller bearing 4 are arranged on both axial sides of the nut 2.
  • the nut 2 is mounted axially and radially in a housing 5 of the linear actuator via these roller bearings.
  • the screw drive is formed by a known planetary roller screw drive with axially preloaded planet 6, which are arranged distributed over the circumference between the nut 2 and the threaded spindle 1.
  • the nut 2 comprises a sleeve 7 and two nut parts 8 divided transversely to the longitudinal axis, between which a spacer ring 9 is arranged.
  • the planets 6 are provided in a known manner with a tooth-shaped groove profile, not shown, which meshes with tooth-shaped groove profiles of the nut parts 8.
  • the spacer ring 9 presses against the nut parts 8.
  • the flanks 6 are pressed radially in the direction of the threaded spindle 1 in the flank engagement with the nut 2. In this way, a play-free planetary roller screw drive is formed.
  • the sleeve 7 has a central section 10, to each of which an end section 11 connects axially on both sides and is tapered in diameter with respect to the central section 10.
  • the two end sections 11 are connected to the central section 10 via radial rims 12.
  • the radial roller bearings 4 are arranged on both end sections 11.
  • the nut 2 is driven in rotation by means of a belt drive 13.
  • the belt drive 13 comprises a belt wheel 16, which is fixed in terms of rotation on one end section 11 of the sleeve 7 is attached.
  • a belt 15 wraps around the belt wheel 14.
  • an electric motor 16 (FIG. 10), which is looped around by the belt 15 with its drive wheel.
  • FIG. 2 shows the screw drive in longitudinal section.
  • Coupling pins 17 for connecting claws 29 (FIG. 10) and track control arms 30 (FIG. 11) are formed on both axial ends of the threaded spindle 1.
  • the threaded spindle 1 is part of a wheel guide element 32 (FIG. 12) of a rear axle steering.
  • FIG. 3 shows a view of the screw drive from FIG. 2.
  • FIGS. 4 and 5 show load cases in which an external axial load F acts on the threaded spindle 1, with the application of force from the right (FIG. 4) and with the application of force from the left (FIG. 5), indicated by the dashed lines.
  • the axial load is introduced into the housing 5 via the planet 6, the respective nut part 8 and the respective axial roller bearing 3.
  • a frictional torque is generated in the axial roller bearing 3, which prevents the nut 2 from rotating undesirably.
  • FIGS. 6 to 9 show the axial roller bearing 3. Between two bearing disks 20, 21, a needle collar 22 is arranged, which has a needle cage 23, in the pockets 24 of which are distributed over the circumference, needles 25 are rotatably arranged.
  • the needles 25 roll on raceways 18, 19 which are formed on mutually facing end faces of the two bearing disks 20, 21.
  • FIG. 9 shows the needle collar 22.
  • the needles 25 can also be referred to in general terms as rod-shaped rolling elements 26.
  • a total of four needles 25 form friction roller bodies 27, which are arranged distributed uniformly over the circumference.
  • Two of these friction rolling elements 27 each form a pair, the axes of rotation of which are arranged parallel to one another. The axes of rotation of the two pairs are arranged approximately at an angle of 90 degrees.
  • a straight line which is arranged parallel at a distance s to the axis of rotation of a friction rolling element, intersects the axis of the axial rolling bearing 3.
  • a larger distance s means one Larger inclined position of the friction roller body with respect to the other needles 25.
  • a smaller distance s means a smaller inclined position of the friction roller body with respect to the other needles 25.
  • the friction roller body 27 is at an angle alpha to one of the needles 25. This is indicated in FIG. 9 in that the axis of rotation of the friction roller body 27 lies in a plane which is arranged transversely to the bearing axis of the axial roller bearing and intersects a normal to the bearing axis, which is also in this plane. The normal and the axis of rotation intersect at this angle alpha.
  • this angle is approximately 20 degrees.
  • this axial roller bearing enables an overall efficiency of less than 50%, so that this screw drive works in the self-locking range
  • the linear actuator proposed here for a rear axle steering of a motor vehicle works in a setting range which is located in the middle range at approx. 5-6 kN.
  • FIG. 10 shows a linear catuator according to the invention with the screw drive described.
  • the housing 5 can be clearly seen with a flange 28 for receiving the electric motor 16.
  • Claws 29 are connected to the threaded spindle, not shown here.
  • Track control arms 30 are articulated on these claws 29 and articulate the wheels 31 (FIGS. 11 and 12) of a vehicle axle of a motor vehicle.
  • the threaded spindle 1 is part of a wheel guiding element 32.
  • FIGS. 11 and 12 show a motor vehicle with rear axle steering, the rear axle of which is provided with a linear actuator according to the invention.
  • linear actuator described here can be provided with another type of screw drive, the nut of which is supported on the housing via the axial roller bearing according to the invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un entraînement fileté, comprenant un boîtier (5) et un écrou (2) disposé sur une tige filetée (1) déplaçable de manière axiale par rapport à l'écrou (2), et comprenant un palier à roulement axial (3) pour le montage axial de l'écrou (2) rotatif sur le boîtier (5), le palier à roulement axial (3) comprenant des corps roulants (26) en forme de tige qui sont disposés sur sa périphérie et roulent sur les pistes (18,19) du palier à roulement axial (3). Au moins un élément roulant (26) en forme de tige se présente sous la forme d'un élément roulant à friction (27), dont l'axe de rotation est espacé de manière radiale à l'axe du palier à roulement axial (3). Le rendement global de l'entraînement fileté peut être maintenu en dessous de 50 %, c'est-à-dire à l'intérieur de la plage d'autoblocage.
PCT/DE2019/100538 2018-06-29 2019-06-12 Entraînement fileté et actionneur linéaire comportant cet entraînement fileté WO2020001686A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018115788.6A DE102018115788A1 (de) 2018-06-29 2018-06-29 Gewindetrieb und Linearaktuator mit diesem Gewindetrieb
DE102018115788.6 2018-06-29

Publications (1)

Publication Number Publication Date
WO2020001686A1 true WO2020001686A1 (fr) 2020-01-02

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ID=67003155

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Application Number Title Priority Date Filing Date
PCT/DE2019/100538 WO2020001686A1 (fr) 2018-06-29 2019-06-12 Entraînement fileté et actionneur linéaire comportant cet entraînement fileté

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DE (1) DE102018115788A1 (fr)
WO (1) WO2020001686A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4005733A1 (fr) * 2020-11-27 2022-06-01 Hilti Aktiengesellschaft Engrenage excentrique pour une machine-outil
DE102020131828B4 (de) 2020-12-01 2022-09-15 Schaeffler Technologies AG & Co. KG Aktuator für eine Lenkeinrichtung eines Kraftfahrzeuges
CN116750076B (zh) * 2023-08-09 2023-12-22 安徽兆睿科技有限责任公司 一种齿条式电动助力转向器和转向系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI33691A (fi) * 1961-01-18 1963-11-11 Rullhållare för ett tryckrullager
DE19523395A1 (de) 1995-06-28 1997-01-02 Schaeffler Waelzlager Kg Schraubgetriebe mit einer Wälzringmutter
DE102014010019A1 (de) 2014-07-08 2016-01-14 Rwe Deutschland Ag Verfahren zum Schalten von dezentralen Energiewandlern
DE102016218792A1 (de) * 2015-10-28 2017-05-04 Schaeffler Technologies AG & Co. KG Axiallager sowie Achsschenkel-Lageranordnung und deren Verwendung
US9810261B1 (en) * 2016-06-02 2017-11-07 Eaton Corporation Bearing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI33691A (fi) * 1961-01-18 1963-11-11 Rullhållare för ett tryckrullager
DE19523395A1 (de) 1995-06-28 1997-01-02 Schaeffler Waelzlager Kg Schraubgetriebe mit einer Wälzringmutter
DE102014010019A1 (de) 2014-07-08 2016-01-14 Rwe Deutschland Ag Verfahren zum Schalten von dezentralen Energiewandlern
DE102016218792A1 (de) * 2015-10-28 2017-05-04 Schaeffler Technologies AG & Co. KG Axiallager sowie Achsschenkel-Lageranordnung und deren Verwendung
US9810261B1 (en) * 2016-06-02 2017-11-07 Eaton Corporation Bearing

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