WO2008006645A1 - Palier à roulement avec capteur d'angle de rotation intégré - Google Patents

Palier à roulement avec capteur d'angle de rotation intégré Download PDF

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Publication number
WO2008006645A1
WO2008006645A1 PCT/EP2007/055377 EP2007055377W WO2008006645A1 WO 2008006645 A1 WO2008006645 A1 WO 2008006645A1 EP 2007055377 W EP2007055377 W EP 2007055377W WO 2008006645 A1 WO2008006645 A1 WO 2008006645A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling bearing
ring
bearing
bearing ring
ferromagnetic material
Prior art date
Application number
PCT/EP2007/055377
Other languages
German (de)
English (en)
Inventor
Günter Schmid
Original Assignee
Schaeffler 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 Kg filed Critical Schaeffler Kg
Publication of WO2008006645A1 publication Critical patent/WO2008006645A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
    • 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
    • F16C19/08—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 two or more rows of 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances

Definitions

  • the invention relates to a roller bearing with the features of claim 1.
  • DE 42 07 324 A1 proposes a so-called pulse rolling bearing, which enables the non-contact detection of rotational speeds using magnetic means.
  • the outer or the inner race of the rolling bearing in the circumferential direction in each case at equal intervals successively arranged areas of different magnetic properties, and on the outer or inner race on a radial radial surface or an axial end face at equal intervals one behind the other the magnetic field shielding substance, such as a film, is arranged.
  • the rotation of the corresponding trained race is converted into electrical signals by means of a sensor which detects the constantly changing magnetic field strengths.
  • a hydrostatic pump or a motor with a drive or output shaft is known, which is mounted in a housing and rotatably connected to a Zählkranz for speed and / or position monitoring.
  • the Zählkranz can be made of a metallic material and be encapsulated with a polymeric material.
  • the metering ring can be made of a polymer material and in gleichze- ßigen intervals be provided with distributed around its circumference metallic deposits.
  • the Zählkranz is made of different polymeric materials by two-component injection molding, wherein a component has metallic Eigen- shafts.
  • the invention has for its object to provide a rolling bearing with at least one angle sensor for detecting the angular position and / or the relative speed between the mutually corresponding bearing rings, which is simple and inexpensive to produce and requires a minimum of space for said angle encoder.
  • the above object is achieved in that the at least one angle encoder on the one hand has a plastic-bonded, ferromagnetic material which is received in an annular recess or groove of a bearing ring, and on the other hand at least one, the plastic-bonded, ferromagnetic material associated sensor, which on another bearing ring or is supported on a component adjacent to the rolling bearing.
  • annular recess or groove can be arranged or formed within a lateral surface and / or an end face of the respective bearing ring.
  • the plastic-bonded, ferromagnetic material, a material and / or positive connection with the respective bearing ring in detail is introduced into the annular recess or groove by a known injection molding process.
  • the magnetization of the ferromagnetic material is realized during the injection of the same into the recess or groove by means of the injection molding tool or in a separate working step after carrying out the injection process.
  • a plurality of separately manufactured ring sections of ferromagnetic material within the recess or groove material and / or positive locking and / or by means of known mechanical fastening means are fixed. Said separately manufactured ring sections are magnetizable both before and after their assembly.
  • the ferromagnetic material forming an angular scale, may be magnetized with a pole pair number "1" or a multiple thereof. It is also proposed that between the plastic-bonded, ferromagnetic material and the respective bearing bearing ring a magnetic coupling between the same reducing coating is provided.
  • This coating can be formed for example by an injectable, thermoplastic plastic layer.
  • the senor As far as the sensor is concerned, it is provided that it is fixed by means of mechanical fastening means known per se and / or by material bonding, preferably by gluing, to the other bearing ring or a component adjacent to the rolling bearing.
  • the senor may have a radial or axial scanning direction depending on the selected configuration and arrangement of the recess or groove.
  • annular recess or groove are preferably arranged on the rotating bearing ring and the sensor on the fixed bearing ring of the rolling bearing or on a component adjacent to the rolling bearing.
  • FIGURE shows schematically a supported by a shaft inventively designed rolling bearing in an axial section.
  • a double-row roller bearing 1 is shown, which is arranged on a shaft 2 and has a radially outer bearing ring 3 and two radially inner bearing rings 4a and 4b. Between these bearing rings 3; 4a, 4b are guided in two rows of rolling elements 5a, 5b balls as rolling elements.
  • the two inner bearing rings 4a, 4b are axially fixed by means of a threaded nut 6 screwed onto the shaft 2 against a rim 7 of the shaft 2.
  • an angle encoder 8 is provided for this purpose, which serves for detecting the angular position and / or the relative rotational speed between the mutually corresponding bearing rings 3, 4a.
  • This angle transmitter 8 is formed on the one hand by a plastic-bonded, ferromagnetic material 9, which is received in an annular recess 10 of the inner bearing ring 4a.
  • the plastic-bonded, ferromagnetic material 9 can be formed within the recess 10 both as closed or as a multiple, forming individual ring sections, interrupted ring.
  • this angle encoder 8 comprises a known sensor 11, which is associated with the plastic-bonded, ferromagnetic material 9.
  • This sensor 1 1 is adapted to detect changing magnetic field strengths and to generate suitable electrical signals, and to provide an evaluation device, not shown, but known per se for evaluation.
  • the annular recess 10 together with the formed ring of plastic-bonded, ferromagnetic material 9 is arranged in an end-side section of the lateral surface of the left bearing ring 4a, whereby a simple and cost-effective production is possible.
  • the scanning direction of the sensor 11 can be chosen such that either in the radial direction or in the axial direction Detecting the changing in each revolution magnetic field strength is possible.
  • the plastic-bonded, ferromagnetic material 9 is introduced into the recess 10 or groove according to a known injection molding, whereby a material and / or positive connection between the formed ring of plastic-bonded, ferromagnetic material 9 and the respective bearing ring 4a is extremely easy to produce ,
  • the invention is not limited to this type of attachment of the formed ring of plastic-bonded, ferromagnetic material 9, but includes any other suitable measure.
  • a plurality of separate ring sections can be prepared beforehand and, forming a closed or partially interrupted ring, can be firmly bonded within the recess 10 or groove by, for example, bonding and / or positive locking and / or by means of mechanical fasteners known per se.
  • Said plastic-bonded, ferromagnetic material 9 can be magnetized with a number of pole pairs "1" or a multiple thereof, the magnet tion is expediently realized during the injection of the same in the recess 10 or groove by means of the selected per se known injection molding tool.
  • the magnetization can also be carried out after the actual injection process, which is accordingly also covered by the invention.
  • prefabricated ring sections are used, then it may also be expedient to assemble the same already in a correspondingly magnetized manner.
  • This coating 12 is preferably formed by a aufspritzbare, thermoplastic see plastic layer, which enters into a material connection with the then plastic-coated, ferromagnetic material 9 then sprayed on it in an advantageous manner.
  • film-like coatings 12, paints and the like can be used for this purpose.
  • the sensor 1 1 As far as the sensor 1 1 is concerned, it is fixed on the outer bearing ring 3 by means of mechanical fastening means known per se, in the present case by means of one or more screw connections 13.
  • the actual scanning head 1 1 a of the sensor 1 1 is in the embodiment shown radially through a through hole in the outer bearing ring 3 passes led, and aligned to the plastic-bonded ferromagnetic material 9 of the inner bearing ring 4a.
  • it may also be fastened to the bearing ring 3 in such a way that it is mounted axially, ie, aligned with the end face of the bearing ring 4a or on its plastic-bonded, ferromagnetic material 9.
  • the illustrated embodiment is based on an angle encoder 8, the plastic-bonded, ferromagnetic material 9 on an inner bearing ring 4a or 4b and the sensor 1 1 are fixedly disposed on an outer bearing ring 3. Also possible is an arrangement, not shown, according to which the plastic-bonded, ferromagnetic material 9 on a radially outer bearing ring 3 and the sensor 1 1 are fixedly arranged on a radially inner bearing ring 4a or 4b. Furthermore, it is detected by the invention that the sensor 1 1 can be fixed to a component adjacent to the rolling bearing 1.
  • annular recess 10 or groove on the rotating bearing ring 4a in this case connected to a rotating shaft 2 inner bearing ring 4a, and the sensor 1 1 on fixed bearing ring 3, in this case the outer bearing ring 3 of the rolling bearing. 1 or on a not shown in detail, adjacent to the rolling bearing 1 arranged component, such as a load-bearing component, are fixed, as a simple electrical connection between the sensor 11 and an evaluation unit can be realized.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)

Abstract

L'invention concerne un palier à roulement (1), comprenant au moins une première bague de palier (3) située radialement à l'extérieur et au moins une deuxième bague de palier (4a, 4b) située radialement à l'intérieur, avec au moins une rangée de corps de roulement (5a, 5b) guidée dans des chemins de roulement entre ces dernières et au moins un capteur d'angle (8) pour détecter la position angulaire et/ou la vitesse de rotation relative entre les bagues de palier correspondant l'une à l'autre (3, 4a, 4b). Au moins un capteur d'angle (8) présente d'une part un matériau ferromagnétique à liant plastique (9), qui est logé dans un évidement circulaire (10) ou une rainure d'une bague de palier (4a), et comprend d'autre part au moins un capteur (11) associé au matériau ferromagnétique à liant plastique (9), qui est soutenu sur l'autre bague de palier (3) ou sur un composant adjacent au palier à roulement (1).
PCT/EP2007/055377 2006-07-08 2007-06-01 Palier à roulement avec capteur d'angle de rotation intégré WO2008006645A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006031718.1 2006-07-08
DE102006031718A DE102006031718A1 (de) 2006-07-08 2006-07-08 Wälzlager mit integriertem Drehwinkelgeber

Publications (1)

Publication Number Publication Date
WO2008006645A1 true WO2008006645A1 (fr) 2008-01-17

Family

ID=38480552

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/055377 WO2008006645A1 (fr) 2006-07-08 2007-06-01 Palier à roulement avec capteur d'angle de rotation intégré

Country Status (2)

Country Link
DE (1) DE102006031718A1 (fr)
WO (1) WO2008006645A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046540A1 (de) 2008-09-10 2010-03-11 Schaeffler Kg Wälzlageranordnung mit Drehwinkelgeber
DE102010049552B4 (de) * 2010-10-25 2012-05-31 Schaeffler Technologies Gmbh & Co. Kg Wälzlagersensor, Wälzlager mit einem Wälzlagersensor und Anordnung eines Wälzlagersensors
DE102011082221A1 (de) * 2011-09-07 2013-03-07 Schaeffler Technologies AG & Co. KG Wälzlager
DE102014208510A1 (de) * 2014-05-07 2015-11-12 Bayerische Motoren Werke Aktiengesellschaft Sensorring
DE102017107430B4 (de) * 2017-04-06 2024-10-17 Schwing Gmbh Drehwinkelsensorhaltesystem
DE102020103421A1 (de) 2020-02-11 2021-08-12 Liebherr-Components Biberach Gmbh Wälzlager mit Überwachungsvorrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213732A1 (fr) * 1985-07-26 1987-03-11 Honda Giken Kogyo Kabushiki Kaisha Anneau magnétique de détection de rotation d'un objet
DE3814920A1 (de) * 1987-05-08 1988-11-24 Riv Officine Di Villar Perosa Lager fuer ein sich drehendes teil und verfahren zu seiner herstellung
DE4323444A1 (de) * 1992-07-23 1994-01-27 Skf France Clamart Cedex Als Verbundteil ausgebildeter Ringkodierer für Wälzlager und einen solchen Kodierer aufweisendes Wälzlager mit einem Informations-Meßfühler
EP0607719A1 (fr) * 1993-01-19 1994-07-27 Snr Roulements Dispositif de montage à joint d'étanchéité à codeur incorporé
WO2002071076A1 (fr) * 2001-03-06 2002-09-12 Aktiebolaget Skf Dispositif de galet a roulement instrumente
FR2826413A1 (fr) * 2001-06-20 2002-12-27 Skf Ab Palier a roulement instrumente
US20030057651A1 (en) * 1999-03-10 2003-03-27 The Torrington Company Assembly forming a magnetic seal, and rolling bearing incorporating such assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2503102Y2 (ja) * 1986-05-30 1996-06-26 矢崎総業株式会社 車両用回転検出センサ
US4969753A (en) * 1987-05-29 1990-11-13 Ntn Toyo Bearing Co., Ltd. Wheel bearing assembly for automotive wheel
JP2980939B2 (ja) * 1990-04-27 1999-11-22 エヌティエヌ株式会社 回転検出機構内蔵形の車輪用軸受装置
FR2734873B1 (fr) * 1995-05-30 1997-07-11 Skf France Roulement equipe d'un dispositif integre de detection de la vitesse de rotation
FR2750181B1 (fr) * 1996-06-21 1998-07-31 Rks Sa Roulement d'orientation a capteur integre
DE69815760T2 (de) * 1997-06-27 2004-04-29 Nsk Ltd. Kugellager mit Drehzahlsensor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213732A1 (fr) * 1985-07-26 1987-03-11 Honda Giken Kogyo Kabushiki Kaisha Anneau magnétique de détection de rotation d'un objet
DE3814920A1 (de) * 1987-05-08 1988-11-24 Riv Officine Di Villar Perosa Lager fuer ein sich drehendes teil und verfahren zu seiner herstellung
DE4323444A1 (de) * 1992-07-23 1994-01-27 Skf France Clamart Cedex Als Verbundteil ausgebildeter Ringkodierer für Wälzlager und einen solchen Kodierer aufweisendes Wälzlager mit einem Informations-Meßfühler
EP0607719A1 (fr) * 1993-01-19 1994-07-27 Snr Roulements Dispositif de montage à joint d'étanchéité à codeur incorporé
US20030057651A1 (en) * 1999-03-10 2003-03-27 The Torrington Company Assembly forming a magnetic seal, and rolling bearing incorporating such assembly
WO2002071076A1 (fr) * 2001-03-06 2002-09-12 Aktiebolaget Skf Dispositif de galet a roulement instrumente
FR2826413A1 (fr) * 2001-06-20 2002-12-27 Skf Ab Palier a roulement instrumente

Also Published As

Publication number Publication date
DE102006031718A1 (de) 2008-01-10

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