DE102009020554A1 - Ball screw for use in motor vehicle, has ball nut mounted in main bearing, where bearing outer ring of main bearing comprises outer peripheral surface that is designed as part of spherical surface and supported with rings against housing - Google Patents
Ball screw for use in motor vehicle, has ball nut mounted in main bearing, where bearing outer ring of main bearing comprises outer peripheral surface that is designed as part of spherical surface and supported with rings against housing Download PDFInfo
- Publication number
- DE102009020554A1 DE102009020554A1 DE102009020554A DE102009020554A DE102009020554A1 DE 102009020554 A1 DE102009020554 A1 DE 102009020554A1 DE 102009020554 A DE102009020554 A DE 102009020554A DE 102009020554 A DE102009020554 A DE 102009020554A DE 102009020554 A1 DE102009020554 A1 DE 102009020554A1
- Authority
- DE
- Germany
- Prior art keywords
- bearing
- main bearing
- outer ring
- ball screw
- ball nut
- 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.)
- Ceased
Links
Classifications
-
- 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
- B62D5/0445—Screw drives
- B62D5/0448—Ball nuts
-
- 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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/084—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface sliding on a complementary spherical surface
-
- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
-
- 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
-
- 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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- 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
- F16H2025/2445—Supports or other means for compensating misalignment or offset between screw and nut
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen Kugelgewindetrieb mit Merkmalen des Oberbegriffs des Anspruchs 1.The The present invention relates to a ball screw with features of the preamble of claim 1.
Kugelgewindetriebe werden allgemein als reibungsarme, geräuscharme und nahezu spielfreie Antriebe für Spindeln eingesetzt. Sie setzen eine Drehbewegung in eine Linearbewegung um. Wegen dieser Eigenschaften werden Kugelgewindetriebe in elektromotorisch angetriebenen Servolenkungen eingesetzt. In diesem Anwendungsfall ist die Spindel des Kugelgewindetriebs auf der Zahnstange einer Zahnstangenlenkung ausgebildet, während die Kugelmutter in dem Gehäuse des Lenkgetriebes drehbar gelagert ist. Ein Elektromotor treibt die Kugelmutter dann entweder direkt, über ein Rädergetriebe oder über einen Zahnriementrieb an.Ball Screws are commonly called low-friction, low-noise and nearly backlash-free drives used for spindles. you put a rotational movement in a linear motion. Because of these properties are ball screws in electric motor driven power steering systems used. In this application, the spindle of the ball screw formed on the rack of a rack and pinion steering while the ball nut rotatable in the housing of the steering gear is stored. An electric motor then drives the ball nut either directly, via a gearbox or over a toothed belt drive.
Durch die unmittelbare Kopplung des Kugelgewindetriebs mit der Zahnstange werden im Kraftfahrzeug im Betrieb Rückwirkungen auf den Kugelgewindetrieb erzeugt. Diese Rückwirkungen äußern sich in Stoßbelastungen und Biegebelastungen der Zahnstange. Diese Belastungen fördern eine Geräuschentwicklung und erhöhten Verschleiß. Die Bauteile der so belasteten Baugruppe müssen entsprechend groß dimensioniert werden, um eine ausreichende Lebensdauer zu erreichen.By the direct coupling of the ball screw with the rack be in the motor vehicle in the operating repercussions on the Ball screw generated. These repercussions are expressed in impact loads and bending loads of the rack. These loads promote noise and increased wear. The components of the so charged Assembly must be dimensioned correspondingly large to achieve a sufficient service life.
Es
gibt zahlreiche Ansätze, derartige Stoß- und Biegebelastungen
aufzufangen. So ist es aus der
Die aus dem Stand der Technik bekannten Dämpfungselemente sind für die Federung oder Dämpfung axialer Stoßbelastungen geeignet. Für Biegemomente, die in den Kugelgewindetrieb eingeleitet werden, sind sie nur eingeschränkt geeignet. Zudem ergibt die Verwendung von elastisch nachgiebigen Lagermaterialien eine ungenau definierte Position der Kugelmutter. Die Materialien unterliegen auch einer Alterung.The are known from the prior art damping elements for suspension or damping of axial shock loads suitable. For bending moments in the ball screw are introduced, they are only partially suitable. moreover results in the use of elastically yielding bearing materials an inaccurately defined position of the ball nut. The materials are also subject to aging.
Es ist deshalb Aufgabe der vorliegenden Erfindung, einen Kugelgewindetrieb in einem Gehäuse derart zu lagern, dass dessen Position in dem Gehäuse genau definiert ist und dass dennoch eine Kippbewegung der Kugelgewindemutter möglich ist.It is therefore an object of the present invention, a ball screw be stored in a housing such that its position is precisely defined in the housing and that nevertheless a tilting movement the ball screw nut is possible.
Diese Aufgabe wird von einem Kugelgewindetrieb mit den Merkmalen des Anspruchs 1 gelöst.These Task is a ball screw with the features of the claim 1 solved.
Weil der Lageraussenring des Hauptlagers eine ringförmige äußere Umfangsfläche aufweist, die als Teil einer Kugeloberfläche ausgebildet und mit Ringen gegenüber dem Gehäuse abgestützt ist, die eine kompatible ebenfalls einen Teil einer Kugeloberfläche bildenden innere Oberfläche aufweisen, wird bei Kippbelastungen eine Ausweichbewegung des Lagers möglich, ohne dass die axiale oder radiale Position des Lagers im Gehäuse undefiniert ist.Because the bearing outer ring of the main bearing an annular outer Peripheral surface which, as part of a spherical surface formed and with rings opposite the housing supported, which is also a compatible one part a spherical surface forming inner surface have, with tilting loads an evasive movement of the bearing possible without the axial or radial position of the Warehouse in the housing is undefined.
Nachfolgend wird ein Ausführungsbeispiel der vorliegenden Erfindung anhand der Zeichnung beschrieben. Es zeigt:following becomes an embodiment of the present invention described with reference to the drawing. It shows:
In
der
Eine
Drehung der Kugelmutter
In
einem Lenkgetriebe ist die Spindel
In
Axial- und Radialrichtung stützt sich das Hauptlager
Die
Lagerung in den Ringen
Diese
Lagerung wird in der
Im
Betrieb wirken Biegemomente auf die Gewindespindel
Es
ist ersichtlich, dass in der Axialrichtung der Achse
Die äußere
Oberfläche der äußeren Lagerschale
Der
durch die beschriebene Anordnung gewonnene zusätzliche
Freiheitsgrad führt bei Biegebelastungen der Gewindespindel
- 11
- Kugelmutterball nut
- 22
- Spindelspindle
- 44
- Getriebegehäusegearbox
- 55
- Hauptlagermain bearing
- 77
- Symmetrieachseaxis of symmetry
- 1010
- LageraußenringBearing outer ring
- 1111
- Ringring
- 11'11 '
- Ringring
- 1313
- Gehäusedeckelhousing cover
- 1414
- Momentanpolinstantaneous
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - US 2003/0121714 A1 [0004] US 2003/0121714 A1 [0004]
- - GB 2388352 A [0004] GB 2388352 A [0004]
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009020554A DE102009020554A1 (en) | 2009-05-08 | 2009-05-08 | Ball screw for use in motor vehicle, has ball nut mounted in main bearing, where bearing outer ring of main bearing comprises outer peripheral surface that is designed as part of spherical surface and supported with rings against housing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009020554A DE102009020554A1 (en) | 2009-05-08 | 2009-05-08 | Ball screw for use in motor vehicle, has ball nut mounted in main bearing, where bearing outer ring of main bearing comprises outer peripheral surface that is designed as part of spherical surface and supported with rings against housing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009020554A1 true DE102009020554A1 (en) | 2010-11-11 |
Family
ID=42932499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009020554A Ceased DE102009020554A1 (en) | 2009-05-08 | 2009-05-08 | Ball screw for use in motor vehicle, has ball nut mounted in main bearing, where bearing outer ring of main bearing comprises outer peripheral surface that is designed as part of spherical surface and supported with rings against housing |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102009020554A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013068104A1 (en) * | 2011-11-07 | 2013-05-16 | Thyssenkrupp Presta Ag | Ball screw having bearing compensation |
WO2015169735A1 (en) * | 2014-05-06 | 2015-11-12 | Thyssenkrupp Presta Ag | Bearing for a ball screw drive |
WO2018068933A1 (en) * | 2016-10-12 | 2018-04-19 | Robert Bosch Gmbh | Steering system |
WO2019210906A1 (en) * | 2018-05-02 | 2019-11-07 | Schaeffler Technologies AG & Co. KG | Bearing arrangement |
US10981592B2 (en) * | 2017-12-05 | 2021-04-20 | Zf Active Safety And Electronics Us Llc | Ball nut assembly for a power steering assembly of a vehicle |
DE102010056049B4 (en) | 2010-12-23 | 2021-08-12 | Volkswagen Ag | Transmission, automotive steering and motor vehicle |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030121714A1 (en) | 2000-11-10 | 2003-07-03 | Jun Okada | Electric power steering device |
GB2388352A (en) | 2000-07-21 | 2003-11-12 | Nsk Ltd | Electric power steering with impact resistance |
-
2009
- 2009-05-08 DE DE102009020554A patent/DE102009020554A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2388352A (en) | 2000-07-21 | 2003-11-12 | Nsk Ltd | Electric power steering with impact resistance |
US20030121714A1 (en) | 2000-11-10 | 2003-07-03 | Jun Okada | Electric power steering device |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010056049B4 (en) | 2010-12-23 | 2021-08-12 | Volkswagen Ag | Transmission, automotive steering and motor vehicle |
WO2013068104A1 (en) * | 2011-11-07 | 2013-05-16 | Thyssenkrupp Presta Ag | Ball screw having bearing compensation |
US9376139B2 (en) | 2011-11-07 | 2016-06-28 | Thyssenkrupp Presta Ag | Ball screw having bearing compensation |
WO2015169735A1 (en) * | 2014-05-06 | 2015-11-12 | Thyssenkrupp Presta Ag | Bearing for a ball screw drive |
CN106536325A (en) * | 2014-05-06 | 2017-03-22 | 蒂森克虏伯普利斯坦股份公司 | Bearing for a ball screw drive |
US9809245B2 (en) | 2014-05-06 | 2017-11-07 | Thyssenkrupp Presta Ag | Bearing for a ball screw drive |
CN106536325B (en) * | 2014-05-06 | 2019-01-01 | 蒂森克虏伯普利斯坦股份公司 | Bearing for ball screw |
WO2018068933A1 (en) * | 2016-10-12 | 2018-04-19 | Robert Bosch Gmbh | Steering system |
US10981592B2 (en) * | 2017-12-05 | 2021-04-20 | Zf Active Safety And Electronics Us Llc | Ball nut assembly for a power steering assembly of a vehicle |
WO2019210906A1 (en) * | 2018-05-02 | 2019-11-07 | Schaeffler Technologies AG & Co. KG | Bearing arrangement |
CN111788401A (en) * | 2018-05-02 | 2020-10-16 | 舍弗勒技术股份两合公司 | Bearing device |
DE102018110466B4 (en) * | 2018-05-02 | 2021-02-25 | Schaeffler Technologies AG & Co. KG | Bearing arrangement |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R016 | Response to examination communication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |