WO2017005258A1 - Vis d'entraînement - Google Patents

Vis d'entraînement Download PDF

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Publication number
WO2017005258A1
WO2017005258A1 PCT/DE2016/200281 DE2016200281W WO2017005258A1 WO 2017005258 A1 WO2017005258 A1 WO 2017005258A1 DE 2016200281 W DE2016200281 W DE 2016200281W WO 2017005258 A1 WO2017005258 A1 WO 2017005258A1
Authority
WO
WIPO (PCT)
Prior art keywords
spindle
sleeve
guide
housing
screw drive
Prior art date
Application number
PCT/DE2016/200281
Other languages
German (de)
English (en)
Inventor
Jerome Malitourne
Lászlo Mán
Peter Greb
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
Priority to DE112016003059.2T priority Critical patent/DE112016003059A5/de
Priority to CN201680039743.7A priority patent/CN107735598B/zh
Publication of WO2017005258A1 publication Critical patent/WO2017005258A1/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
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders
    • 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
    • F16H2025/204—Axial sliding means, i.e. for rotary support and axial guiding of nut or screw shaft
    • 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
    • F16H2025/2075—Coaxial drive motors
    • F16H2025/2078—Coaxial drive motors the rotor being integrated with the nut or screw body

Definitions

  • the invention relates to a particular for an actuator, for example
  • Such a screw drive is known for example from DE 10 2010 047 800 A1.
  • This screw is designed as an electrically driven Planetenannalzgetriebe and as part of a hydrostatic clutch actuator, that is, a Hydrostataktors used in a motor vehicle.
  • the Hydrostataktor has a master cylinder with a pressure chamber, wherein a piston is displaceable by means of acting as a rotary-linear gear planetary gear with high translation.
  • the piston is in this case arranged axially between the pressure chamber and Planetendoilzgetriebe.
  • Further Planetenannalzgetriebe are known for example from DE 10 201 1 075 950 A1 and DE 10 201 1 088 995 A1.
  • a sensor element is provided which serves to detect an axial displacement between a threaded spindle and a spindle nut.
  • Planetenskye generally have a spindle nut, a spindle, and between spindle nut and spindle rolling, profiled planets. Compared to simple screw drives, Planetenxxlzgetriebe are characterized by a much higher translation, which can be produced with small electrical drives high axial operating forces.
  • the invention has for its object to provide a comparison with the cited prior art further developed screw drive, which is characterized in particular by consistent, even under conditions of mass production at most low-scattering product properties.
  • This object is achieved by a screw with the features of claim 1.
  • the screw has in a known per se basic structure a linearly displaceable spindle and a linear direction, that is, axial direction of the spindle relative to a housing of the screw fixed spindle nut, wherein the spindle nut rotatably connected to a rotor of an electric motor or identical, while the associated stator is fixed in the housing.
  • the electric motor drive the screw is an integral part of an actuator, which converts a rotary motion into a linear movement.
  • the rotor is rotatably supported by means of at least one bearing, in particular a roller bearing, and at the same time fixed relative to the housing in the axial direction of the spindle.
  • a pressure piece is provided, which is connected to the spindle and in particular suitable for generating a hydraulic pressure.
  • a spindle guide is provided according to the invention, which comprises at least one connection sleeve and a guide slide.
  • the connection sleeve is arranged coaxially to the spindle and fixed to the housing, for example, integrally formed with the housing.
  • the connection sleeve has an outer diameter which is smaller than the maximum outer diameter of the housing.
  • the guide slide is connected to the spindle on the side facing away from the pressure piece and at least indirectly to
  • the length of the connecting sleeve measured in the axial direction is sufficient to keep the guide sliding element within the cross-section of the connecting sleeve during the entire possible travel of the spindle.
  • connection sleeve Due to the sliding bearing of the spindle at the end facing away from the pressure piece inside the connection sleeve, the spindle is mounted several times in the radial direction, namely on the one hand indirectly via the spindle nut and the associated storage, in particular roller bearing, the rotor and on the other hand directly by means of the guide slide.
  • the protrusion of the connection sleeve over the rotor-comprising electrical components of the actuator ensures that the two bearing elements are axially spaced from each other. A mechanical overdetermination of bearings is not given.
  • connection sleeve is tilt-soft connected to the housing. In this way it is ensured that also production-related or thermally induced dimensional changes are compensated. Tension within the screw drive can be avoided in this way.
  • connection sleeve is formed integrally with a housing-fixed Statorumspritzung of plastic. The Statorumspritzung forms a part of the housing of the screw drive.
  • a non-rotatable relative to this guide sleeve is arranged within the connection sleeve, which is fastened exclusively on the housing, preferably closed, side in the connection sleeve, wherein the guide sliding element connected to the spindle is guided secured against rotation in the guide sleeve .
  • a guide sleeve in particular a metal profile with a plurality of longitudinally extending guide grooves is suitable.
  • the guide sliding element has in this case radially extending projections which engage in the guide grooves.
  • the guide sleeve has a greater rigidity than the connection sleeve.
  • the guide slide element preferably closes off the spindle on the face side.
  • the guide slide can for example be positively connected to the spindle.
  • the rotor of the electric motor and thus also the spindle nut is preferably mounted in the housing by means of a single bearing, in particular a ball bearing, for example deep groove ball bearing or four-point bearing.
  • the bearing is preferably located on the side facing away from the connecting sleeve and thus the pressure piece side facing the housing, whereby a particularly large axial distance between the two different types of bearings, namely on the one hand the rolling bearing and on the other hand the spindle guide is given.
  • the screw drive as Planetenxxlzgetriebe several profiled planets are arranged between the spindle nut and the spindle. Regardless of the nature of the interaction between see spindle and spindle nut, the screw can have a measuring system.
  • the pressure piece may be provided to exert pressure on a hydraulic fluid.
  • the screw drive can be designed in this case as a hydrostatic actuator, such as clutch actuator.
  • the screw drive for example, for the operation of brakes, namely service or parking brakes, or for transmission operations, parking locks, door and flap operations usable.
  • a ball screw, a roller screw or a simple screw drive can be provided as an alternative to a Planetenskylzgetriebe.
  • the screw drive is combined with another gear.
  • the advantage of the invention is, in particular, that in a screw drive a torque support between the spindle and the housing is realized by a sleeve which is attached to the housing in a tilting manner, namely a connection sleeve, whereby a mechanical overdetermination is avoided, wherein the entire travel of the spindle can be carried out within the connection sleeve is.
  • a screw drive in a simplified sectional illustration, a detail of the screw drive according to FIG. 1 in a further sectional representation (see dashed section line in FIG.
  • Figures 1 and 2 show a designated by the reference numeral 1, usable as a clutch actuator in a motor vehicle screw drive, with respect to the principle function of which reference is made to the cited prior art.
  • the screw drive 1 is designed as an electrically driven planetary roller screw drive.
  • an electric motor comprises a stator 2 and a rotor 3 which is fixedly connected to a spindle nut 4, which interacts with a spindle 6, namely threaded spindle, via planets 16 which are shown only schematically, and also represents a radial support of the spindle 6.
  • the spindle nut 4 can extend over the entire length of the rotor 3 measured in the axial direction.
  • the stator 2 is firmly embedded in a housing 12 of the screw drive 1 and is supported in the axial direction against a wall 13 which is not part of the screw drive 1.
  • the spindle 6 protrudes in the axial direction, beyond the stator 2 and rotor 3, into a guide sleeve 7 and a surrounding connecting sleeve 8, both sleeves 7, 8 being arranged coaxially with the spindle 6.
  • a guide slide 9 is placed, which is rotatably connected to the spindle 6 and designed cup-shaped, that it covers the end face of the spindle 6.
  • the guide slide element 9, which is rigidly connected to the spindle 6, is in turn displaceably but not rotatably guided in the guide sleeve 7, as can be seen in particular from FIG.
  • the guide slide 9 and the guide sleeve 7 have for this purpose projections 14 in the form of short, extending in the longitudinal direction of the spindle 6 strips or guide grooves 15 which prevent rotation between said parts 9, 7.
  • three projections 14 and associated guide grooves 15 are symmetrically distributed around the circumference of the central axis of the spindle 6.
  • the guide sleeve 7 is made of sheet steel. Comparable with the concernedsgleitelement 9 and the connection sleeve 8 is closed at the front. The guide sleeve 7 is secured against rotation at the closed end of the connecting sleeve 8, but held limited tilted in this. At the opposite, the rotor 3 facing the end of the guide sleeve 7, this is open and not stored. The guide sleeve 7 is thus mounted within the connection sleeve 8 only on one side and thus at least slightly yielding. Incidentally, that is, apart from the frontal connection of the guide sleeve 7 to the connection sleeve 8, an annular gap between said sleeves 7,8 is formed.
  • connection sleeve 8 is connected to the stator 2 in a tilt-soft manner.
  • the connection sleeve is made in one piece with the Statorumspritzung of plastic.
  • the connection sleeve 8 although a greater wall thickness, but also a greater compliance, especially in the radial direction, on.
  • the sleeves 7, 8 together with the guide slide 9 is a spindle guide, which is axially spaced from the stator 2 and rotor 3.
  • the rotor 3 is, as apparent from Fig. 1, roller bearings.
  • the spindle 6 is connected to a movable in a cylinder 5 pressure piece 10, which for the usability of the screw 1 as a hydrostatic actuator, for example in a clutch, in particular double clutch, within the powertrain of a motor vehicle.

Landscapes

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

Abstract

L'invention concerne une vis d'entraînement, en particulier pour un actionneur, par exemple un actionneur d'embrayage hydraulique d'un véhicule, comprenant une broche (6) déplaçable linéairement et un écrou de broche (4) fixe par rapport au boîtier (12) de l'actionneur dans la direction linéaire et raccordé de manière solidaire en rotation à un rotor (3) d'un moteur électrique, ainsi qu'au moins un roulement (11) prévu pour le positionnement, par fixation dans la direction axiale, du rotor (3), en particulier un roulement à billes, et un élément de pression (10) raccordé à la broche (6). Sur son côté opposé à l'élément de pression (10), la broche (6) est guidée dans un guide de broche (7, 8, 9) qui comprend au moins une douille de raccordement (8) et un élément de guidage coulissant (9), la douille de raccordement (8) étant agencée coaxialement à la broche (6) et fixée au boîtier (12), et l'élément de guidage coulissant (9) étant au moins indirectement réalisé pour positionner la broche (6) bloquée en rotation dans la douille de raccordement (8).
PCT/DE2016/200281 2015-07-07 2016-06-17 Vis d'entraînement WO2017005258A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112016003059.2T DE112016003059A5 (de) 2015-07-07 2016-06-17 Gewindetrieb
CN201680039743.7A CN107735598B (zh) 2015-07-07 2016-06-17 丝杠传动装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015212643.9A DE102015212643A1 (de) 2015-07-07 2015-07-07 Gewindetrieb
DE102015212643.9 2015-07-07

Publications (1)

Publication Number Publication Date
WO2017005258A1 true WO2017005258A1 (fr) 2017-01-12

Family

ID=56686603

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2016/200281 WO2017005258A1 (fr) 2015-07-07 2016-06-17 Vis d'entraînement

Country Status (3)

Country Link
CN (1) CN107735598B (fr)
DE (2) DE102015212643A1 (fr)
WO (1) WO2017005258A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020169309A1 (fr) * 2019-02-19 2020-08-27 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Entraînement à vis à billes avec sécurité antirotation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015004018A1 (de) * 2015-03-25 2016-09-29 Kiekert Aktiengesellschaft Zuziehantrieb für ein Kraftfahrzeugschloss
CN108916338B (zh) * 2018-07-20 2021-10-01 长久（滁州）专用汽车有限公司 一种丝杠安装用限位机构
DE102020118219A1 (de) 2020-07-10 2022-01-13 Schaeffler Technologies AG & Co. KG Verfahren zum erfolgreichen Abschluss einer Erstinbetriebnahme eines Aktors

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426682A1 (de) * 1994-07-28 1996-02-01 Teves Gmbh Alfred Elektronisch regelbares Bremsbetätigungssystem
DE19528735A1 (de) * 1994-08-06 1996-02-15 Toyoda Automatic Loom Works Motor zur Umwandlung der Drehung einer Welle in eine lineare Bewegung
DE202008001576U1 (de) * 2008-02-05 2008-03-27 Wilhelm Narr Gmbh & Co. Kg Gewindetrieb
DE102010047800A1 (de) 2009-10-29 2011-05-05 Schaeffler Technologies Gmbh & Co. Kg Hydrostatischer Kupplungsaktor
DE102011075950A1 (de) 2011-05-17 2012-11-22 Schaeffler Technologies AG & Co. KG Planeten-Wälz-Gewindetrieb
DE102011088995A1 (de) 2011-12-19 2013-06-20 Schaeffler Technologies AG & Co. KG Planetenwälzgewindetrieb
WO2014058050A1 (fr) * 2012-10-12 2014-04-17 Ntn株式会社 Actionneur linéaire électrique
JP2014080994A (ja) * 2012-10-12 2014-05-08 Ntn Corp 電動リニアアクチュエータ

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426682A1 (de) * 1994-07-28 1996-02-01 Teves Gmbh Alfred Elektronisch regelbares Bremsbetätigungssystem
DE19528735A1 (de) * 1994-08-06 1996-02-15 Toyoda Automatic Loom Works Motor zur Umwandlung der Drehung einer Welle in eine lineare Bewegung
DE202008001576U1 (de) * 2008-02-05 2008-03-27 Wilhelm Narr Gmbh & Co. Kg Gewindetrieb
DE102010047800A1 (de) 2009-10-29 2011-05-05 Schaeffler Technologies Gmbh & Co. Kg Hydrostatischer Kupplungsaktor
DE102011075950A1 (de) 2011-05-17 2012-11-22 Schaeffler Technologies AG & Co. KG Planeten-Wälz-Gewindetrieb
DE102011088995A1 (de) 2011-12-19 2013-06-20 Schaeffler Technologies AG & Co. KG Planetenwälzgewindetrieb
WO2014058050A1 (fr) * 2012-10-12 2014-04-17 Ntn株式会社 Actionneur linéaire électrique
JP2014080994A (ja) * 2012-10-12 2014-05-08 Ntn Corp 電動リニアアクチュエータ
EP2908028A1 (fr) * 2012-10-12 2015-08-19 NTN Corporation Actionneur linéaire électrique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020169309A1 (fr) * 2019-02-19 2020-08-27 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Entraînement à vis à billes avec sécurité antirotation
CN113490803A (zh) * 2019-02-19 2021-10-08 克诺尔商用车制动系统有限公司 具有防扭转装置的球螺纹传动装置
US20220154808A1 (en) * 2019-02-19 2022-05-19 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Ball Screw Drive With an Anti-Rotation Safeguard
CN113490803B (zh) * 2019-02-19 2023-11-24 克诺尔商用车制动系统有限公司 具有防扭转装置的球螺纹传动装置

Also Published As

Publication number Publication date
DE112016003059A5 (de) 2018-03-22
CN107735598B (zh) 2021-03-23
CN107735598A (zh) 2018-02-23
DE102015212643A1 (de) 2017-01-12

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