EP2646883A1 - Concept de réglage de paramètres d'un processus de laminage au moyen d'un glissement de palier mesuré - Google Patents

Concept de réglage de paramètres d'un processus de laminage au moyen d'un glissement de palier mesuré

Info

Publication number
EP2646883A1
EP2646883A1 EP11790949.9A EP11790949A EP2646883A1 EP 2646883 A1 EP2646883 A1 EP 2646883A1 EP 11790949 A EP11790949 A EP 11790949A EP 2646883 A1 EP2646883 A1 EP 2646883A1
Authority
EP
European Patent Office
Prior art keywords
rolling
bearing
slip
rolling mill
bearing slip
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.)
Withdrawn
Application number
EP11790949.9A
Other languages
German (de)
English (en)
Inventor
Kurt Kemmer
Andreas Kern-Trautmann
Rupert Motschenbacher
Thomas Peuschel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF AB
Original Assignee
SKF AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=45093740&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2646883(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SKF AB filed Critical SKF AB
Publication of EP2646883A1 publication Critical patent/EP2646883A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00—Systems controlled by a computer
    • G05B15/02—Systems controlled by a computer electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • 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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • 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
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/46—Roll speed or drive motor control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • 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
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls

Definitions

  • the present invention relates to a concept for controlling process parameters of a rolling process by means of a measured bearing slip.
  • sheets in different thicknesses and qualities can be produced by a variety of different rolling processes.
  • the process of rolling can be considered as rotary pressure forming. It is possible to distinguish between hot and cold forming as well as longitudinal, transverse and inclined rolls. Most flat and profiled products are produced by longitudinal rolls in corresponding rolling mills. Under a rolling mill or a rolling mill is understood to mean a total of necessary for a rolling process mechanical assemblies, both for a forming and a rolling drive, as well as devices for introducing and exporting a rolling stock, which are engaged during a rolling process.
  • Core elements of rolling mills are roller assemblies having a plurality of rotating, roller bearing rollers.
  • roller arrangements which can also be referred to as so-called rolling mills or rolling mills.
  • rolling mills There are, for example, horizontal and vertical scaffolding.
  • horizontal stands several rotating rolls with horizontally oriented axes of rotation are vertically stacked in a stack, so that a rolling stock, such as an aluminum sheet, can be rolled horizontally from the superposed rotating rolls.
  • a rolling stock such as an aluminum sheet
  • it is processed by two work rolls, which can additionally be supported by support rolls in order to zen the rolling stock occurring partly high forces to compensate.
  • the axes of rotation of the rollers are aligned vertically.
  • the rolling is characterized by the power flows rolling drive, forming and neighboring aggregates, which are mainly coupled by the rolling stock with each other, so that one can speak of a power grid.
  • the rolling process in an information network is regulated by numerous, superimposed and linked process parameters or manipulated variables, such as rolling speed, rolling force, drive, strip thickness, strip tension, flatness, etc.
  • the different modules are therefore both mechanically and electrically or electronically networked together, resulting in a complicated, heavily loaded, highly dynamic and sensitive overall mechatronic system.
  • rolling bearing loads are determined on the basis of theoretical load specifications by calculation models depending on bearing size and design.
  • rolling process parameters are defined for rolling mills in order to always keep bearing loads above the respective minimum load.
  • Due to different operating conditions, corresponding (multi-dimensional) application fields are prescribed in parameter maps which are provided with corresponding, sometimes high safety margins.
  • These partly high security surcharges stand in the way of a tendency to ever higher productivity of rolling mills. It is therefore an object of the present invention to be able to operate rolling process parameters, such as rolling speed or rolling force, of rolling mills closer to their respective actual productivity limits, without, however, damaging rolling bearings of rotating rolls due to bearing slippage.
  • this object can be achieved by a control or regulation according to which a bearing slip of a rolling roller of the rolling mill measured during the rolling process is used as the controlled variable or variable to be controlled.
  • a basic principle is therefore to measure a bearing slip of a roller bearing roller as a control variable or variable to be controlled (actual value) and depending on its deviation to a bearing slip setpoint by influencing (control) at least one process parameter manually or automatically (with an actuator) corrective intervene.
  • a closed control loop can also be created within the rolling process.
  • Exemplary embodiments provide a method for controlling a plurality of process parameters that determine an interaction of a plurality of rolls of a rolling mill in a rolling process.
  • the method comprises measuring, during the rolling process, a bearing slip of at least one rolling bearing, with which one of the rolls is mounted, and adjusting at least one of the process parameters based on the measured value, so that the bearing slip of the roll during the rolling process in a predefined range a bearing slip setpoint is.
  • Embodiments of the method can be executed manually or automatically.
  • a rolling mill with a plurality of rolls, the interaction of which in a rolling process is determined by a plurality of process parameters.
  • the rolling mill comprises means for determining, during the rolling process, a bearing slip measurement for a rolling bearing supporting one of the rolls, and means for adjusting at least one of the process parameters based on the measured value so that the bearing slip of the roll during the rolling process Rolling process is in a predefined range to a bearing slip setpoint.
  • a rolling mill often also includes support rollers in addition to the actual work rolls in order to reduce a deflection of the work rolls in contact with the rolling stock.
  • the device for determining the measured value of the bearing slip can be designed in accordance with exemplary embodiments in order to measure the bearing slip in at least one roller bearing with which one of the working and / or support rollers is mounted. For this purpose, it can, for example, measure a rotational speed of a rolling element in the rolling bearing and, based thereon, determine the measured value for the bearing slip. For speed determination, there are basically several alternative concepts, such as mechanical, optical, magnetic and / or electrical concepts. According to an exemplary embodiment, the means for determining the measured value may be designed to measure the bearing slip based on a magnetic field generated by a magnetized rolling element by means of an annular coil arranged approximately concentrically to a rotational axis of the rolling bearing.
  • the measured value for the bearing slip can also be determined based on a slippage of a bearing cage of the rolling bearing.
  • bearing slippage according to the present invention can be understood to include both rolling element slippage and bearing cage slippage. Also combinations of rolling element and Lagerkarfigschlupf can be subsumed under the term bearing slip here.
  • the (predetermined) bearing slip setpoint is zero. That is, the means for adjusting may be configured to adjust at least one of the process parameters of the rolling process such that the bearing slip is substantially zero and thus a predefined minimum load of the roll is always reached or exceeded.
  • the device for setting the process parameters may preferably be designed to set at least one of the process parameters based on the bearing slip measured value such that an optimum, in the best case even maximum, productivity of the rolling process without bearing slip is achieved.
  • the adjustable or controllable process parameters may be, for example, a rolling speed, a rolling temperature, a rolling force, or a roll spacing of the rolling mill.
  • an adaptation of further rolling process parameters used in rolling mills is also possible and therefore encompassed by embodiments of the present invention.
  • one or a plurality of the process parameters can be adjusted by manual or automatic regulation or control in accordance with the present invention, in order to return the measured bearing slip to its desired range (preferably, by Zero).
  • an optimized operating point can be set in a multi-dimensional parameter characteristic field of the rolling process.
  • Fig. 1 is a schematic representation of a controlled rolling mill according to an embodiment of the present invention
  • FIG. 2 shows a detailed illustration of a four-high rolling mill with two working and support rollers according to an exemplary embodiment of the present invention
  • Fig. 4 is an enlarged view of a support roller of the roll stand of FIG. 2;
  • Fig. 5 is a still further enlarged view of the lower support roller according to FIGS. 2 and 3 with a device for determining a measured value for a bearing slip of the support roller, according to an exemplary embodiment of the present invention.
  • FIG. 6 is a schematic flow diagram of a method for controlling a rolling mill based on the bearing slip, according to an embodiment of the present invention.
  • Fig. 1 shows a schematic representation of a rolling mill 10 according to an embodiment of the present invention.
  • the rolling mill 10 has a plurality of supported rollers 11a, 11b and 12a, 12b, the interaction of which in a rolling process is typically determined by a plurality of rolling process parameters 13-1, 13-2, ..., 13 -N.
  • the rollers are exemplarily arranged in a horizontal stand with two inner work rolls 1 la, b and two outer support rolls 12a, b, the present invention is equally applicable to other stands and arrangements such as e.g. Vertical scaffolding, applicable.
  • the device 14 for determining the measured value 15 is designed to measure or determine an actual rotational speed n w, g of a rolling element of the roller bearing 16b and to determine the measured value 15 for the bearing slip Sw based thereon.
  • ni is the rotational speed of the inner ring
  • D w is the diameter of a rolling element
  • P is the pitch diameter
  • ⁇ is a contact angle of the rolling elements.
  • the measured value 15 for the bearing slip Sw then results with the actually measured rotational speed n w, g of the rolling elements
  • any alternative concepts such as, for example, mechanical, optical, magnetic and / or electrical concepts, or combinations thereof, can be used to determine the actual rolling body rotational speed n w, g .
  • the focus is placed on a concept for measuring the rolling-element rotational speed n w, g by measuring and evaluating a magnetic field generated by at least one magnetized rolling element in the rolling bearing 16 b.
  • FIG. Fig. 2 shows a rolling mill 20, which is formed by way of example only as a four-high rolling stand.
  • the four-high rolling stand 20 comprises a stack of rolls arranged vertically one above the other, wherein inside the stack there are two work rolls 11a, 11b and externally two support rolls 12a, 12b supporting the work rolls.
  • the horizontal work rolls I Ia, I Ib exert a rolling or rolling force F w on a rolling stock 21 to be passed between them.
  • the roller force F w results from laterally on the work rolls I Ia, I Ib on these exerted bending forces F, wherein the bending forces F may alternatively be directed up or down, as indicated by the corresponding arrows in Fig. 2.
  • the bearings 16a, 16b of the two support rollers 12a, 12b comprise left and right two similar, juxtaposed radial roller bearings 22, which are prepared such that the rotational speeds of the therein rolling elements, such as cylindrical rollers, for determining the measured value 15 for the bearing slip Sw can be measured. This will be discussed in more detail below.
  • the predetermined bearing slip setpoint may generally be any value between 0% and 100%, a zero or 0% bearing slip setpoint is mostly of particular interest, as it can cause rolling bearing damage again and again in a rolling mill, for example, by falling below necessary Minimal loads and thus bearing slippage of roller bearings, in particular of backup roller bearings, come.
  • This is illustrated in the operating point 31 shown in FIG. 3 in a characteristic diagram 30.
  • the operating point 31 is located in a working area (shown in bright color) defined by various rolling process parameters, in which bearing slippage occurs.
  • FIG. 3 shows an example of a rolling stock-dependent characteristic diagram. Shown is a dependence of the roller force F w of a roller speed n at a predetermined support zenwalzkraft Fs t and further dependent on various factors, such as an influence 33 of the bending force F. With certain settings of the rolling parameters results in an optimal work area or point 32. There is a difficulty in rolling processes, however, to predict real load conditions and load cases in different application or rolling scenarios and thus to hit the optimum operating point. Due to frictional resistances caused by lubricant and bearing cage, a rotational speed of the rolling elements in the bearings 22 may decrease or even decrease to zero if the load on the bearings 22 is too low, ie below a required minimum load.
  • a corresponding bearing 22 may get into such a zero-load situation, e.g. B. at high rolling speeds (speeds n) and low roll forces F w (see Fig. 3). Sliding or rolling of the rolling elements in the bearing may reduce the thickness of the lubricating film, or even cause failure of the entire lubricating film, resulting in metal-to-metal contact, resulting in surface damage and possible bearing damage.
  • the predetermined bearing slip setpoint could be between 0% and 5%.
  • the operating point 32 could thereby be displaced either vertically downwards in the direction of the slip area or horizontally to the right (in the direction of the slip area), for example by changing the bending force F and / or the rotational speed n.
  • parameters such as the bending force F b , support roll force Fs t , rolling speed or speed n, rolling temperature, roll force or roll spacing the rollers I Ia, b and 12a, b of a rolling mill.
  • an adaptation of other rolling process parameters used in rolling processes and influencing the bearing slip Sw is also possible and is therefore included in embodiments of the present invention.
  • Measuring the bearing slip and adjusting the at least one process parameter 13-n (n 1,2, N), such.
  • bearing slip measured value 15 corresponds to the predetermined bearing slip setpoint value
  • a corresponding automatic or manual adjustment or readjustment of the rolling process parameters 13-n (n 1, 2,. necessary.
  • the bearing slip measured value 15 can, according to some (automated) embodiments, be fed back as a control variable, similar to that shown in FIG. 1, whereby a closed bearing slip control loop for the rolling process can then be produced.
  • a closed bearing slip control loop for the rolling process can then be produced.
  • constant eg at about 0%
  • the Fign. 4 and 5 show enlarged views of the support roller bearing 16a shown in FIG. 2 with a measuring device for the rolling element and bearing ring speeds.
  • the support roller bearing 16a comprises two adjacent, similar radial roller bearings 22 in order to achieve the most symmetrical load.
  • Each of the radial roller bearing 22 comprises a bearing inner ring 41 and a bearing outer ring 42.
  • the inner ring 41 of the radial roller bearing 22 is clamped onto a shaft of the roller 12a and braced with this with a retaining ring 43 which is screwed to the shaft.
  • cylindrical rollers 44 are each arranged in two rows as rolling elements. In intermediate spaces between the rolling elements 43 by means of a lubricant supply 45 lubricant, such as oil, are placed in the bearings 22.
  • a bearing housing cover 46 is fastened by means of different fastening screws 47.
  • a sensor 48 is also provided to measure a Lagerkkfigschlupf.
  • a magnetic coil 50 and a cable feedthrough 51 assigned thereto are provided in order to be able to measure a rotational speed n & w and thus also a slip of the rolling bodies 44.
  • the magnet coil 50 is fastened to the housing cover 46 with a fastening screw 52.
  • the speed w of the rolling elements 44 and a bearing cage 53 need only be measured in the axially outer radial rolling bearing 22.
  • the axially outer radial roller bearing 22 is specially prepared for the measurement, as can be seen in particular from FIG.
  • the measuring device shown in FIG. 5 in particular allows the measurement of a slip Sw of a rolling element 44.
  • at least one rolling element 44 of the radial roller bearing 22 is magnetized such that its magnetization direction is perpendicular to the axis of rotation of the rolling element 44.
  • the annular measuring coil 50 is arranged, the radius of which corresponds approximately to a roller pitch circle radius.
  • the magnetized rolling element 44 generates an oscillating magnetic flux during a rolling movement through an area enclosed by the measuring coil 50.
  • the surface of the coil 50 is circular and concentric with the axis of rotation of the radial roller bearing 22.
  • the measuring coil 50 is connected via the cable feedthrough 51 in connection with the device 14 schematically shown in FIG. 1 for determining the bearing slip measured value 15, which induced in the measuring coil 50 and by the measurement voltage generated by the oscillating magnetic field generated by the rolling body 44 receives and evaluates to determine the measured value 15 for the bearing slip Sw.
  • the measuring coil 50 therefore forms a magnetic field sensor for the device 14 for determining the bearing slip measured value.
  • the magnetic field generated by the magnetized rolling element 44 is transmitted via the inner ring 41 to the roller shaft and the clamping ring 43, through the narrow gap on the fastening ring and thus through the measuring coil 50 via a housing of the measuring device on the outer ring 42 of the radial roller bearing 22nd transmitted, so that so closed magnetic field lines and the measuring coil 50 go through.
  • the bearing cage 53 may be formed, for example, brass and two parts.
  • the bearing cage 53 may comprise, according to embodiments, a bore (not shown) into which a pin may be inserted serving as a positioning means.
  • the inductive proximity sensor 48 of the measuring device can then generate a current pulse each time the positioning means is guided past the proximity sensor 48 after a rotation.
  • a rotational movement of the bearing cage 53 can be determined independently of the rotational speed of the rolling elements 44 and independently of the rotational speed of the bearing inner ring 41. Since the position of the magnetized rolling element 44 is uniquely determined by the rotational position of the bearing cage 53, the position of the rolling element 43 on the inner and / or the outer raceway can be calculated therefrom by means of the device 14.
  • the device 14 for determining the measured value 15 can thus be designed to additionally or alternatively measure the bearing slip Sw based on a slippage of a bearing cage 53 of the roller bearing 22.
  • Such a method can be carried out automatically, for example by means of an inventive rolling mill with the described measuring and control devices, or manually.
  • the method comprises a first step 62 in which, during a rolling process, the bearing slip Sw of at least one rolling bearing 22, with which one of the rolls of the rolling mill is mounted, is measured.
  • a possible measurement concept by means of an evaluation of rotating magnetic fields was explained in detail above.
  • a predefined area around the bearing slip setpoint FOG. preferably zero.
  • influence can be exerted on the take-off or rolling speed, the bending forces F b and / or the column rolling forces Fs t in order to avoid bearing damage.
  • the bearing slip measured values 15 can be determined depending on the material and the manipulated variables can either be controlled manually or automatically fed into the control in order to generate control.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un concept de réglage ou de commande d'une pluralité de paramètres de processus (13-n) qui déterminent une coopération entre plusieurs cylindres (11; 12) d'un laminoir (10) lors d'un processus de laminage. Selon l'invention, pendant le processus de laminage, une valeur de mesure (15) est déterminée pour un glissement d'au moins un palier à roulement (16) sur lequel un des cylindres (11; 12) est monté. Ensuite, au moins un des paramètres de processus (13-n) est réglé sur la base du glissement de palier (15) mesuré, de sorte que le glissement de palier du cylindre (11; 12) se situe dans une plage prédéfinie autour d'une valeur de consigne de glissement de palier pendant le processus de laminage.
EP11790949.9A 2010-11-30 2011-11-29 Concept de réglage de paramètres d'un processus de laminage au moyen d'un glissement de palier mesuré Withdrawn EP2646883A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010062199.4A DE102010062199B4 (de) 2010-11-30 2010-11-30 Konzept zum Einstellen von Prozessparametern eines Walzprozesses mittels eines gemessenen Lagerschlupfes
PCT/EP2011/071225 WO2012072603A1 (fr) 2010-11-30 2011-11-29 Concept de réglage de paramètres d'un processus de laminage au moyen d'un glissement de palier mesuré

Publications (1)

Publication Number Publication Date
EP2646883A1 true EP2646883A1 (fr) 2013-10-09

Family

ID=45093740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11790949.9A Withdrawn EP2646883A1 (fr) 2010-11-30 2011-11-29 Concept de réglage de paramètres d'un processus de laminage au moyen d'un glissement de palier mesuré

Country Status (4)

Country Link
EP (1) EP2646883A1 (fr)
CN (1) CN103329053B (fr)
DE (1) DE102010062199B4 (fr)
WO (1) WO2012072603A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102017120757A1 (de) * 2017-06-30 2019-01-03 Schaeffler Technologies AG & Co. KG Verfahren und Anordnung zum Bestimmen einer Belastung eines Wälzlagers
CN110514443B (zh) * 2019-09-04 2021-07-23 中国航发哈尔滨轴承有限公司 一种航空轴承保持架打滑率的非接触式测量方法

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DE2642045A1 (de) * 1976-09-18 1978-03-30 Motoren Turbinen Union Einrichtung zur bestimmung der kaefigdrehzahl und des lagerschlupfes bei waelzlagern
JPH1029007A (ja) * 1996-07-17 1998-02-03 Toshiba Corp 鋼板圧延機のロール・スリップ検出装置
CN2314870Y (zh) * 1997-11-18 1999-04-21 北京轴承研究所 一种四点－四列组合轴承
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EP1147830B1 (fr) * 2000-04-19 2008-03-12 Skf Gmbh Procédé et dispositif pour contrôler un agencement de palier
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CN2927410Y (zh) * 2006-07-01 2007-07-25 张志明 一种电机的轴承式滑环
DE102007056538A1 (de) * 2007-11-23 2009-05-28 Schaeffler Kg Vorrichtung zum Erfassen der Bewegung von Wälzkörpern in einem Wälzlager
CN201246415Y (zh) * 2008-08-28 2009-05-27 成都华川电装有限责任公司 滚动轴承安装固定结构
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Also Published As

Publication number Publication date
DE102010062199B4 (de) 2015-01-15
DE102010062199A1 (de) 2012-05-31
WO2012072603A1 (fr) 2012-06-07
CN103329053A (zh) 2013-09-25
CN103329053B (zh) 2016-03-02

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