WO2022171528A1 - Dispositif d'évaluation de l'usure de contact d'un composant de palier - Google Patents

Dispositif d'évaluation de l'usure de contact d'un composant de palier Download PDF

Info

Publication number
WO2022171528A1
WO2022171528A1 PCT/EP2022/052659 EP2022052659W WO2022171528A1 WO 2022171528 A1 WO2022171528 A1 WO 2022171528A1 EP 2022052659 W EP2022052659 W EP 2022052659W WO 2022171528 A1 WO2022171528 A1 WO 2022171528A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing component
fretting
unit
sensor unit
evaluating
Prior art date
Application number
PCT/EP2022/052659
Other languages
English (en)
Inventor
Jan BABKA
Original Assignee
Aktiebolaget Skf
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 Aktiebolaget Skf filed Critical Aktiebolaget Skf
Priority to EP22703648.0A priority Critical patent/EP4291855A1/fr
Publication of WO2022171528A1 publication Critical patent/WO2022171528A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness

Definitions

  • the present invention relates to a device for evaluating fretting of a bearing component according to claim 1 and to a method for evaluating fretting of a bearing component ac cording to claim 10.
  • Bearing components for example outer rings of railway axle box bearings, may be affect ed by fretting damages in varying degrees.
  • the fretting is usually irregular and forms map like formations.
  • For a decision whether a bearing component can still be used when fret ting occurs there applies geometrical limits and limits on range, depth or protrusion, and location of the fretting formations.
  • the bearing component is removed from its installation position and is inspected visually by a worker, who decides subjectively on the extent, intensity, and location of fretting (for example, using musters of acceptable or un acceptable bearing components).
  • the worker measures for example the external diameter with a traditional measurement tool, which takes a long time and does not provide reliable results about the state of the whole surface of the bearing component.
  • the device for evaluating fretting of a bearing component comprises a sensor unit, a de termination unit, and an evaluation unit.
  • the bearing component is dismounted from the bearing and then inspected in the device with respect to fretting.
  • the sensor unit is configured to sense distances between the sensor unit and a surface of the bearing component. Such sensed distances can be used as an indicator for fretting as fretting changes the surface of the bearing component and thus also changes of the distanc es between the surface of the bearing component and the sensor unit. As fretting typically occurs not in a uniform way on the surface but may vary over the surface, for example on varying locations on the surface of the bearing component, the distances vary during the sensing. Further, fretting may lead to indentations in the surface of the bearing component, and thus also to protrusions, which correspond to the remaining original surface of the bearing component before any fretting or wear occurred. Further, fretting may lead also to protrusions that rise above the original surface.
  • the determination unit may determine a surface profile of the surface of the bearing component.
  • Such a surface profile may map the varying distances due to fretting damages occurring across the bearing component surface and illustrate the damages for example in a graph. For example, peaks of such a graph may correspond to the original surface and valleys of the graph may correspond to indentations or dimples of the surface, both being caused by fretting.
  • the evaluation unit is then configured to evaluate the surface profile and detect and evalu ate fretting of the bearing component based on the evaluated surface profile. This evalua tion may be used to decide whether the bearing component needs to be replaced or not, i.e., whether the fretting damages are still acceptable so that the bearing component can be fur ther used or whether the fretting damages are too great so that a replacement of the bearing component is necessary.
  • the device uses the described device to scan a surface of a bearing component using a sensor unit and then to interpret the sensed distance values and to determine and evaluate an extent of the fretting.
  • the device provides an automatic way of determining and evaluating fretting and a potential replacement instead of a visual inspection by a worker.
  • the device further comprises an output unit for outputting a visual or acoustic warning signal based on a detection of the evaluation unit.
  • the output unit may send a warning signal indicating the detected fretting.
  • the output unit may comprise a green and a red light and the warning signal may be a change from the green to the red light.
  • the output unit may comprise a display and the warning signal may be an alert being displayed on the display. In this case, the display may also show further information regarding the detected fretting, for example extent of the fretting, location of the fretting, or the like.
  • a fixed distance between the sensor unit and a rotational axis of the bearing component is defined.
  • This fixed distance may be used as a calibration distance for sensing changes of the distance between the sensor unit and the bearing component surface.
  • the device further comprises a holding unit, for exam ple in the form of a pedestal, for holding the bearing component, wherein the holding unit is configured to rotate the bearing component passing the sensor unit.
  • the holding unit may comprise a rotating plate for rotating the bearing component.
  • the sensor unit may be attached to the holding unit.
  • the sensor unit may be configured to rotate around the bearing component.
  • the holding unit is configured to define the fixed dis tance between the sensor unit and the rotational axis of the bearing component.
  • the sensing distance from the sensor unit to the bearing component surface is a defined and constant distance provided by the relative arrangement of the sensor unit and the holding unit. Therefore, changes of the sensing distance due to fretting can be easily determined as changes of this defined distance.
  • the bearing component may be for example an inner or outer ring of a rolling bearing, for example a cylindrical or tapered roller bearing.
  • fretting may occur on several surfaces of the bearing component, for example on an outer surface, an inner sur face or bore or a side face of the bearing component.
  • the sensor unit may be arranged at an outside of the bearing component, above the bearing component, or inside the bearing component.
  • the sensor unit comprises one or more laser sensors.
  • Laser sen sors send a laser signal to the surface and receive a signal reflected from the surface. Based on a measurement of the time from sending the signal to receiving the signal, the distance may be calculated.
  • the laser sensor may be configured to scan the sur face of the bearing component in a line-per-line manner.
  • the surface passes the laser sensor, which scans the surface line per line.
  • the laser may be moved or tilted in a vertical direction for example from up to down, until the whole surface is sensed.
  • a plurality of laser sensors is used so that the surface can be scanned without, or at least with a reduced, verti cal movement of the sensor unit.
  • the evaluation unit is configured to map the surface profile to a virtual landscape of the bearing component.
  • the evaluation unit may generate a virtual landscape representing the whole surface of the bearing component. Such a virtual landscape can for example be shown on a display.
  • the evaluation unit is configured to compare the virtual landscape with predetermined fretting thresholds.
  • the evaluation unit may also use the virtual landscape which includes all information from the graph, i.e., the surface profile.
  • the predetermined fretting thresholds may define for example thresholds for a range, depth, protrusion and/or location of fretting. Depending on the bearing component, differ- ent thresholds may apply.
  • the evaluation unit may thus use different thresholds depending on the inspected bearing component.
  • a method for evaluating fretting of a bearing component comprises the following steps: sensing distances between a sensor unit and a surface of the bearing component, determining at least one surface profile of the surface of the bearing component based on the sensed distances, evaluating the surface profile and detecting and evaluating fretting of the bearing component based on the evalu ated surface profile.
  • An even further aspect of the present invention relates to a computer program product comprising a computer program code which is adapted to prompt a control unit, e.g., a computer or a microchip, and/or a computer of the above discussed device to perform the above discussed steps.
  • a control unit e.g., a computer or a microchip
  • the computer program product may be a provided as memory device, such as a memory card, USB stick, CD-ROM, DVD and/or may be a file which may be downloaded from a server, particularly a remote server, in a network.
  • the network may be a wireless commu nication network for transferring the file with the computer program product.
  • Fig. 1 a schematic block diagram of a device for detecting fretting of a bearing compo nent
  • Fig. 2 a perspective view of a first embodiment of the device of Fig. 1; and Fig. 3: a perspective view of a second embodiment of the device of Fig. It.
  • Fig. 1 shows a schematic block diagram of a device 1 for detecting fretting of a bearing component (not shown in Fig. 1).
  • the device 1 comprises a sensor unit 2 for sensing dis tances from the sensor unit 2 to a surface of the bearing component.
  • the bearing compo nent may be for example an outer ring (Fig. 2) or inner ring (Fig. 3) of a rolling bearing, for example a railway wheelset bearing
  • a determination unit 4 determines a surface profile 6 in the form of a graph based on the sensed distances.
  • the peaks in the surface profile 6 correspond to the original surface or to the height of fretting formations and the valleys of the surface profile 6 correspond to dim ples in the surface.
  • the surface profile 6 may consist of several graphs wherein the y-axis corresponds to a vertical axis of the bearing component and the x-axis corresponds to a horizontal axis of the bearing component.
  • the sensor unit 2 senses the distances about a 360° circumference of the bearing component so that the surface profile 6 shows also the 360° circumference of the bearing component.
  • the surface profile 6 may be used by an evaluation unit 8 for generating a virtual land scape 10 of the bearing component surface and for evaluating the surface profile 6 or the virtual landscape 10 and detecting and evaluating fretting of the bearing component.
  • changes in the distances correspond to indentations of the bearing component surface, which in turn are caused by fretting and thus indicate locations of fret ting.
  • the evaluation unit 8 determines depth and extent of occurred fretting, but also the location of the fretting. Further, the evaluation unit 8 can compare the detected characteristics of fretting with pre defined thresholds regarding depth, protruded height, range or location. Based on this comparison, the evaluation unit 8 can decide whether the bearing component needs to be replaced or whether the fretting occurs at locations or within a range (regarding depth or extent) which is still acceptable, and the bearing component can be used further without replacement.
  • An output unit 12 can output a warning signal 14 indicating detected fretting, eventually in combination with further information like location, range etc. of the fretting of the bearing component.
  • Figs. 2 and 3 show two exemplary embodiments of the device 1 in a perspective view.
  • the device 1 comprises a holding unit, for example in the form of a pedestal 16, on which a bearing component 26 may be placed.
  • the bearing component 26 is shown as an outer ring in Fig. 2 and an inner ring in Fig. 3.
  • a holding unit for example in the form of a pedestal 16
  • the bearing component 26 is shown as an outer ring in Fig. 2 and an inner ring in Fig. 3.
  • other kinds of bearing components and also different surfaces than the ones that are shown may be in spected.
  • the bearing component 26 is demounted from the installation point within a bearing and is placed on the pedestal 16.
  • the pedestal 16 comprises a rotating plate for rotating the bear ing component 26 around a rotation axis X, passing the sensor unit 2.
  • the sensor unit 2 may rotate around the pedestal 16 or the bearing component 26.
  • the sensor unit 2 comprises a plurality of laser sensors 24 for scanning an outer surface of the bearing component 26.
  • the laser sensors 24 may be ar ranged to scan a side face of the bearing component 26.
  • Other arrangements may be possi ble, for example for scanning an inner surface of a bearing component 26.
  • the evaluation unit 8 detects fretting which exceeds the predefined thresholds, this will be signaled using a red light 20.
  • An output unit 12 having a red and green light 20, 22 is a very simple way of in dicating fretting. Based on this information, it can be decided whether to replace the bear ing component 26 or to re-mount the bearing component 26.
  • the device described above provides a reliable and automatic way to detect and evaluate fretting of a bearing component.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rolling Contact Bearings (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

Est divulgué un dispositif permettant d'évaluer l'usure de contact d'un composant de palier, le dispositif comprenant une unité de capteur permettant de détecter des distances entre l'unité de capteur et une surface du composant de palier, une unité de détermination permettant de déterminer au moins un profil de surface de la surface du composant de palier en fonction des distances détectées, et une unité d'évaluation permettant d'évaluer le profil de surface et de détecter et évaluer l'usure de contact du composant de palier en fonction du profil de surface évalué.
PCT/EP2022/052659 2021-02-12 2022-02-04 Dispositif d'évaluation de l'usure de contact d'un composant de palier WO2022171528A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22703648.0A EP4291855A1 (fr) 2021-02-12 2022-02-04 Dispositif d'évaluation de l'usure de contact d'un composant de palier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102021000003116A IT202100003116A1 (it) 2021-02-12 2021-02-12 Dispositivo per valutare l’usura di un componente di cuscinetto
IT102021000003116 2021-02-12

Publications (1)

Publication Number Publication Date
WO2022171528A1 true WO2022171528A1 (fr) 2022-08-18

Family

ID=75439384

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/052659 WO2022171528A1 (fr) 2021-02-12 2022-02-04 Dispositif d'évaluation de l'usure de contact d'un composant de palier

Country Status (3)

Country Link
EP (1) EP4291855A1 (fr)
IT (1) IT202100003116A1 (fr)
WO (1) WO2022171528A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206862298U (zh) * 2017-04-12 2018-01-09 华东理工大学 一种非接触式承载鞍表面磨损检测装置
US20180335091A1 (en) * 2017-05-16 2018-11-22 SKF Aerospace France S.A.S Method of determining wear in a bearing surface

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206862298U (zh) * 2017-04-12 2018-01-09 华东理工大学 一种非接触式承载鞍表面磨损检测装置
US20180335091A1 (en) * 2017-05-16 2018-11-22 SKF Aerospace France S.A.S Method of determining wear in a bearing surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HOLLAR KATHERINE A ET AL: "Quantifying wear depth in hip prostheses using a 3D optical scanner", WEAR, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 394, 16 October 2017 (2017-10-16), pages 195 - 202, XP085344462, ISSN: 0043-1648, DOI: 10.1016/J.WEAR.2017.10.008 *

Also Published As

Publication number Publication date
EP4291855A1 (fr) 2023-12-20
IT202100003116A1 (it) 2022-08-12

Similar Documents

Publication Publication Date Title
US7304295B2 (en) Method and system of detecting eccentricity and up/down movement of a code wheel of an optical encoder set
US10377605B2 (en) Rope and rope groove monitoring
KR101516264B1 (ko) 레이저 센서를 이용한 타이어 상태 감지 장치 및 방법
US20050259859A1 (en) Method and Apparatus for Characterizing a Surface, and Method and Apparatus for Determining a Shape Anomaly of a Surface
KR20150004844A (ko) 베어링 모니터링 방법 및 시스템
EP3168583B1 (fr) Appareil et procédé de diagnostic de fonctionnement anormal d'un rotor
CN103389062A (zh) 位置测量装置和运行位置测量装置的方法
CN109278796A (zh) 一种车载式车轮不圆度检测系统
EP2960621B1 (fr) Dispositif d'inspection de forme
KR20130134394A (ko) 타이어 트레드 검사장치 및 검사방법
WO2022171528A1 (fr) Dispositif d'évaluation de l'usure de contact d'un composant de palier
CN101458119B (zh) 图像分析实时检测轴瓦振动的方法
CN111609803B (zh) 可提取纹理和颜色的煤矿立井罐道间距检测装置与方法
US6956491B2 (en) Monitoring bearing performance
JP4617168B2 (ja) 軸受損傷評価装置および軸受損傷評価方法
JPH10142347A (ja) 感震装置
US20230339524A1 (en) Method for monitoring a railway track and monitoring system for monitoring a railway track
CN110646728A (zh) 基于断路器触头移动速度的断路器故障分析方法和装置
JP2005121925A (ja) 画像処理装置の異常の判定方法
JP2020041799A (ja) タイヤ劣化評価システムとその方法及びそのプログラム
JPH06109432A (ja) 寸法測定装置
KR101199656B1 (ko) 펌프 메카니컬씰 결함두께 측정 장치 및 방법
CN107703150B (zh) 一种气门头部缺陷的检测方法及检测系统
CN117036273A (zh) 瓶口缺陷检测方法、装置、设备及存储介质
Brown et al. A laser and video-based displacement transducer for the monitoring of bridge deflections

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22703648

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2022703648

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2022703648

Country of ref document: EP

Effective date: 20230912