WO2004102018A1 - 軸受、その管理システム及びその管理方法 - Google Patents
軸受、その管理システム及びその管理方法 Download PDFInfo
- Publication number
- WO2004102018A1 WO2004102018A1 PCT/JP2004/006454 JP2004006454W WO2004102018A1 WO 2004102018 A1 WO2004102018 A1 WO 2004102018A1 JP 2004006454 W JP2004006454 W JP 2004006454W WO 2004102018 A1 WO2004102018 A1 WO 2004102018A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- information
- wireless tag
- storage unit
- ball bearing
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- 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
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
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- 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
-
- 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
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller 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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means
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- 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
- F16C2229/00—Setting preload
-
- 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
- F16C2233/00—Monitoring condition, e.g. temperature, load, vibration
-
- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
Definitions
- the present invention relates to a bearing such as a rolling bearing for supporting a supported component such as a rotating body, a system for managing the bearing, and a method for managing the bearing.
- Rolling bearings and other bearings are incorporated not only in industrial machinery installed in factories such as steel rolling mills, but also in the backbone of a wide variety of equipment used by general users, such as home appliances and automobiles. It supports supported parts such as rotating bodies in the apparatus.
- the present invention has been made in view of the above-described conventional problems, and has as its object to provide a bearing that facilitates appropriate information management, a management system thereof, and a management method thereof.
- a bearing of the present invention for achieving the above object is a bearing for supporting a supported component, wherein a radio tag for transmitting and receiving information is attached.
- a bearing configured as described above, by using the wireless tag, appropriate information management for the bearing can be easily performed.
- the wireless tag is provided with a storage unit for storing predetermined bearing initial information unique to the bearing to which the tag is attached.
- the wireless tag is mounted on a surface side other than the bearing surface that makes a rolling contact, a sliding contact, or a contact including a double contact with the support surface of the supported component. .
- the tag can be attached to the bearing in a state where the wireless tag is prevented from coming into contact with the support surface, thereby simplifying the attachment of the tag to the bearing and causing the wireless tag to come into contact with the support surface. Tag failure can be prevented.
- the wireless tag is attached to a fixed member of the bearing.
- the wireless tag becomes immobile at the mounting position, so that the effect of the bearing operation on the tag is eliminated as much as possible, and information can be easily transmitted to and received from the tag at the immovable position. It can be carried out.
- the present invention is a management system for managing bearings
- a writer device for writing bearing operation information from the measurement mechanism into a storage unit of a wireless tag provided in the bearing is a writer device for writing bearing operation information from the measurement mechanism into a storage unit of a wireless tag provided in the bearing.
- the bearing operation information is acquired by the measurement mechanism and is appropriately stored in the storage unit of the wireless tag by the writer device. In this case, by reading the bearing operation information stored in the storage unit, the abnormal operation can be easily and accurately reproduced.
- the present invention is a management method for managing a bearing, When the bearing operates, bearing operation information relating to the operating state of the bearing is written into the storage unit of the wireless tag provided in the bearing, and the written operation information is read to analyze the operation of the bearing. It is assumed that.
- the bearing operation information is appropriately stored in the storage unit of the wireless tag in accordance with the bearing operation, and the bearing operation is performed using the stored operation information. Since the analysis is performed, even if a bearing error occurs, the abnormal bearing operation can be easily and accurately reproduced, and the cause of the occurrence of the bearing error can be clarified quickly and accurately. Can be quickly resolved.
- the bearing operation information before and after the occurrence of the bearing abnormality can be reliably stored in the storage unit, and the bearing abnormality can be more reliably clarified.
- FIG. 1 is a diagram schematically showing a main configuration of a ball bearing and a management system therefor according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing a specific configuration example of the wireless tag shown in FIG. 1.
- FIG. 3 is a cross-sectional view showing a configuration of a main part of a double-row angular ball bearing according to another embodiment.
- FIG. 4 is a flowchart showing a method of assembling the ball bearing shown in FIG. 3.
- FIG. 1 is a diagram schematically showing a main configuration of a ball bearing and a management system therefor according to an embodiment of the present invention.
- a management system 10 of the present embodiment includes a ball bearing 1 to be managed, a wireless tag 2 provided on the ball bearing 1 side, and a bidirectional wireless communication with the tag 2.
- a reader / writer (R / W) device 3 capable of performing various types of information communication.
- the system 10 is connected to the R / W device 3 via a wired or wireless communication path so as to be able to transmit information, and is connected to a measurement mechanism 4 for measuring a predetermined operation of the ball bearing 1 and a communication network such as a LAN.
- a client terminal 5 which is also a PC (Personal Computer) and is interactively connected to the RZW device 3 via a communication network is provided.
- the client terminal 5 includes a terminal installed on the user side that uses the device, which is not only a terminal installed on each manufacturer side of the ball bearing 1 and the rotating device, and is connected via the RZW device 3. Instructions and display of information to be written to or read from the wireless tag 2 can be performed on each manufacturer and user side.
- the ball bearing 1 includes an inner ring la as a rotating wheel integrally attached to a rotating shaft S of the rotating device, an outer ring lb as a fixed wheel attached to a housing or the like of the device.
- a ball lc is provided rotatably between the wheels, and rotatably supports the rotation axis S.
- the outer ring lb is fixed in a state where its outer peripheral surface is in contact with a mounting surface such as the housing and its axial end surface is not in contact with a member on the rotating device side.
- the wireless tag 2 is attached to an axial end face of the outer ring lb, which is a fixed-side member, and is configured as an RFID (Radio Frequency Identification) tag that retains and manages information on the ball bearing 1.
- the information managed by the wireless tag 2 includes predetermined bearing initial information specific to the ball bearing 1 and bearing operation information relating to the operation state of the bearing 1 which is added as appropriate according to the operation of the ball bearing 1. (Details will be described later).
- the wireless tag 2 has an IC chip 6 configured using a semiconductor chip, an iron core and an antenna coil wound therearound, as shown in FIG. And an RF antenna 7 for transmitting and receiving signals.
- the chip 6 and the antenna 7 are mounted on a substrate in a one-chip form.
- the wireless tag 2 is attached to the axial end face of the outer ring lb in a state where the above-mentioned substrate is housed in a protective case made of metal or synthetic resin.
- the wireless tag 2 has an extremely lightweight and small size with a vertical and horizontal dimension of about 0.3 to 0.4 mm, and the case is attached to the end face with an adhesive or the like. By fixing, the tag 2 is attached to the ball bearing 1.
- a mounting portion such as a concave portion on the axial end surface or the outer peripheral surface, and to store the wireless tag 2 in the mounting portion so as to protrude outward from the mounting portion.
- the IC chip 6 includes a control unit 6a including arithmetic means such as a CPU and a non-volatile memory, and writes and reads data according to instructions from the control unit 6a. And an input / output unit connected to the RF antenna 7 for inputting / outputting information between the storage unit 6b and the outside, and controlled by the control unit 6a. And a transmission / reception unit 6c.
- the IC chip 6 includes a power supply section 6d having a capacitor connected to the antenna coil and forming a resonance circuit with the coil.
- the capacitor is charged when the RF antenna 7 receives a radio wave of a predetermined (resonant) frequency, and the charged power is supplied to each unit of the chip 6;
- Tag 2 is configured to function as a battery-less information management tool.
- the control unit 6a is configured to perform drive control of the modulation circuit and the demodulation circuit included in the transmission / reception unit 6c, and manages a storage area in the storage unit 6b.
- the control unit 6a operates the demodulation circuit to transmit information included in the transmission wave from the transmission / reception unit 6c. get.
- This information includes an identification code for identifying the ball bearing 1, and the control unit 6a determines whether or not the transmission wave received this time is transmitted to the bearing 1.
- the control unit 6a determines whether the command included in the transmitted wave is either a data write command or a data read command. To judge.
- the control unit 6a stores the transmission information transmitted with the command in the storage unit 6b in accordance with the content of the transmission information and the like. Store it in the area.
- the control unit 6a reads the information specified by the command from the storage area of the storage unit 6b, and operates the modulation circuit of the transmission / reception unit 6c.
- the read information including the identification code is modulated into a transmission wave addressed to the R / W device 3 and transmitted through the RF antenna 7.
- the storage unit 6b stores the bearing initial information before the ball bearing 1 is shipped from the factory, for example.
- This initial bearing information is constant data on the manufacturing specifications of the ball bearing 1, and this initial information includes design values and actual measured values of the components of the ball bearing 1, that is, the inner and outer rings la and lb and the ball lc. Includes manufacturing history data such as initial values and assembly numbers for the assembly accuracy of these elements, or basic data such as the type and amount of lubricating oil between the inner and outer rings la and lb.
- the bearing initial information is roughly divided into basic information and additional information as shown in Table 1 below, for example.
- the basic information is basic and fixed information of the ball bearing 1 to which the wireless tag 2 is attached.
- the basic information includes, for example, component element information classified for each component of the ball bearing 1 and Contains the overall overall information of the ball bearing 1.
- the additional information is information that is appropriately added by a request from the user side or a service of the bearing maker, and the additional information includes, for example, guidance information and remarks information.
- the component information is composed of basic data on each component of the ball bearing 1, and includes the above-described design values, measured values, serial numbers, and the like of the above-described inner and outer rings la and lb and the ball lc. And data such as materials.
- the component information includes, in addition to data indicating the type and amount of the lubricating oil such as grease, a seal member for sealing the annular opening between the inner and outer rings la and lb, and a plurality of balls lc at regular intervals.
- the overall information is composed of basic data on the finished product of the ball bearing 1, and this overall information includes each dimension data such as a bearing width and a clearance at the time of manufacturing. Further, data indicating operating conditions of the ball bearing 1, such as allowable temperature and allowable load, is also stored in the storage unit 6b as overall information.
- the storage unit 6b holds the initial bearing information including the component information and the overall information as described above, not only the bearing maker but also the primary user who has incorporated the ball bearing 1 into the product or the primary user. Even the final user who purchases the product can immediately know the information unique to the ball bearing 1 concerned. For example, information indicating the composition of the material of the seal member, which is difficult to determine from the appearance of the ball bearing 1, can also be easily obtained. Also, for greases of different types depending on the operating temperature of the ball bearing 1, it is possible to easily select an appropriate grease for the operating temperature.
- the above-mentioned guidance information is data such as the procedure for the ball bearing 1 and the rotating device to which the ball bearing 1 is to be assembled.
- the information includes, for example, a standard for assembling the ball bearing 1 used in a production line on the user side. Contains data. In other words, it is necessary to associate the procedure required for the work of assembling the ball bearing 1 with the rotating equipment, the appropriate tightening torque, press-fit load, thrust or radial preload, etc. of the ball bearing 1, and the design drawing of the rotating equipment.
- the data indicating the assembled position is stored in the storage unit 6b as guidance information.
- the guidance information includes data indicating a countermeasure to be taken when an abnormal operation or the like occurs in the ball bearing 1 or the rotating device.
- the remarks information is data such as special notes and precautions on the ball bearing 1 and the rotating equipment.
- the information includes the inner and outer rings 1a, lb and ball lc obtained by the bearing maker from the steel maker. There is data of mill sheet (steel material inspection certificate). If the seal member is made of synthetic resin, the amount of recycled resin used in the seal member, that is, the amount of reused (re-synthesized) synthetic resin (use ratio) and the resin name, etc.
- the data is stored as content information.
- data indicating that the ball bearing 1 is an export-regulated product such as a security controlled product or data indicating that the ball bearing 1 contains environmentally harmful materials may be remarks information.
- data is stored in the storage unit 6b as data S remarks information indicating the contact information of the bearing maker and the user (primary user), the manufacturer may be required to troubleshoot the ball bearing 1 or rotating equipment. Can be contacted immediately.
- the bearing operation information appropriately stored in the storage unit 6b is data that fluctuates in accordance with the actual operation state of the ball bearing 1, and the operation information includes data measured by the measurement mechanism 4.
- Operation data that can analyze the bearing operation such as the temperature, vibration value, or noise value around the ball bearing 1 or the rotation speed of the rotating shaft S (ball bearing 1) is included.
- the operation data is sequentially updated according to the storage capacity of the storage unit 6b, and the storage unit 6b holds at least the latest operation data. More specifically, in the storage unit 6b, a storage area of a predetermined data size is allocated for the operation data of the bearing operation information, and the storage unit 6b is configured to update the operation data from the data having the oldest storage date and time. ing.
- the storage unit 6b is configured to stop updating (writing) of the bearing operation information in accordance with an instruction signal from the control unit 6a.
- the terminal 5 sends a write stop command to the control unit 6a to stop the writing operation of the bearing operation information.
- the writing operation of the bearing operation information in the storage unit 6b is stopped, so that the bearing operation information before and after the occurrence of the bearing abnormality is stored in the storage unit. 6b can be reliably held.
- the R / W device 3 includes an antenna for performing wireless communication with the RF antenna 7 of the wireless tag 2, and the R / W device 3 can be directly operated by the operator or The R / W device 3 exchanges data with the wireless tag 2 in response to a remote operation using the client terminal 5.
- the R / W device 3 is provided with a display unit capable of displaying the identification code, write data, read data, etc., so that the operator can immediately grasp the read data and perform measurement. Data written to tag 2 from mechanism 4 can be viewed.
- the RZW device 3 is preferably a hand-held type that is configured to be portable by an operator, and reads and writes initial bearing information or bearing operation information for a plurality of ball bearings 1. Can be included.
- the measuring mechanism 4 includes a detecting means for acquiring the bearing operation information, specifically, a measuring instrument such as a thermometer, a vibration meter, a sound level meter, or a rotation speed meter. Each of these measuring instruments detects corresponding operation data at a predetermined sampling cycle and outputs the data to the RZW device 3.
- a measuring instrument such as a thermometer, a vibration meter, a sound level meter, or a rotation speed meter.
- a device provided independently of the above-mentioned rotating device, or a device provided as a standard equipment for controlling the rotating device can be used.
- ammeters that measure the value of current supplied to an electric motor that rotates the rotating shaft S.
- a device that indirectly measures the rotation speed data based on the detected value of the ammeter can also be used.
- the measurement mechanism 4 acquires the bearing operation information, and the R / W device 3 transmits the bearing operation information from the measurement mechanism 4 It is stored in the storage unit 6b of the wireless tag 2.
- the above-mentioned bearing initial information is stored in the storage unit 6b, even when an abnormality occurs in the ball bearing 1 due to aging or improper operation, it is stored in the storage unit 6b.
- the abnormal operation can be easily and accurately analyzed and reproduced to perform a verification test. As a result, it is possible to clarify the cause of the occurrence of the bearing abnormality with high accuracy and at an early stage, and to solve the bearing abnormality at an early stage.
- the latest bearing operation information is stored in the storage unit 6b, by using the latest operation data, it is possible to warn the operator before an abnormality occurs in the ball bearing 1, and to generate a bearing abnormality. It is also possible to prevent life.
- information is written to or read from the storage unit 6b of the tag 2 by wireless communication between the wireless tag 2 and the R / W device 3, the ball bearing 1 incorporated in the rotating device is used. Information management can be reliably performed without disassembling the device.
- the wireless tag 2 since the wireless tag 2 is attached to the axial end surface of the outer ring lb, the tag 2 can be attached to a part other than the raceway surface (bearing surface) on which the ball lc rolls.
- the tag 2 is attached to the ball bearing 1 in a state where the tag 2 is prevented from coming into contact with the outer peripheral surface (support surface) of the rotating shaft (supported component) S, thereby simplifying the attachment of the tag to the ball bearing 1.
- contact between the wireless tag 2 and the support surface since contact between the wireless tag 2 and the support surface is prevented, it is possible to prevent the occurrence of tag failure due to the contact.
- the wireless tag 2 is attached to the outer ring lb, which is a fixed member of the ball bearing 1, the tag 2 is fixed at the attachment position in the rotating device, and the bearing rotation operation with respect to the tag 2 is performed.
- the effect is eliminated as much as possible, and even when a small-output RZW device 3 having a narrow range in which radio waves can be transmitted and received is used, wireless communication between the device 3 and the tag 2 can be easily performed.
- the wireless tag 2 is attached to the ball bearing 1 itself, even if the ball bearing 1 is detached from the rotating device and used for another machine, the wireless tag 2 and the ball bearing 1 are used together. 2 can be moved. Therefore, the bearing initial information and the bearing operation information stored in the storage unit 6b can be transferred together with the ball bearing 1, and the bearing initial information and the accumulated bearing operation information can always be used effectively. Also, since bearing information can be transferred together with the ball bearing 1 in this way, unlike where bearing information is recorded and managed on paper (for example, an inspection report), it is possible to prevent missing or lost bearing information. In addition, there is no need to secure a separate storage location for bearing information.
- FIG. 3 is a cross-sectional view showing a configuration of a main part of a double-row angular ball bearing according to another embodiment.
- the main difference between the present embodiment and the above embodiment is that the present embodiment is applied to a double-row angular ball bearing used for a wheel hub of an automobile.
- the double-row angular ball bearing 11 of the present embodiment includes a pair of inner races l lal and l la2 bisected in the axial direction, and a single outer race 1 lb integrally formed as a whole. . Further, in the ball bearing 11, a plurality of balls l lcl which are freely rolled between the inner ring l lal and the outer ring l ib, and a plurality of balls l lcl which are freely rolled between the inner ring l la2 and the outer ring l ib. There are a plurality of bonores l lc2 provided.
- Bonores l lcl and l lc2 roll on the raceway surfaces of the corresponding inner and outer rings while being held at predetermined intervals by retainers ll dl and l ld2, respectively.
- a seal member made of synthetic resin is provided in an annular opening between the inner race and the outer race.
- a sealing member l le2 made of synthetic resin is provided, and together with the sealing member ll el. In addition, it prevents rainwater and foreign matter from entering the inside of the bearing.
- the inner rings l lal and l la2 are integrally assembled to the axle (supported component) 30 of the automobile tire, and function as rotating wheels. More specifically, the inner race l lal is attached to the axle 30 with its axial end face in contact with the flange on one end side of the axle 30. In the other inner ring l la2, the inner ring l la2 is attached to the axle 30 in a state where its axial end surface is in contact with a nut 31 screwed to a screw portion on the other end side of the axle 30. I have. By adjusting the tightening force on the nut 31, a predetermined (thrust) preload is applied to the ball bearing 11 (the details will be described later).
- a predetermined (thrust) preload is applied to the ball bearing 11 (the details will be described later).
- the outer ring ib functions as a fixed wheel, and is integrally fixed to a housing (more specifically, an inner cylindrical portion of the wheel) 32 on the vehicle side.
- the outer race l ib is formed with a cutout l lbl at a part of the outer peripheral surface.
- a load sensor for measuring the preload applied to the ball bearing 11, for example, a strain gauge 12 is provided in the notch l lbl.
- a metal cover 12 is attached to the notch l lbl, for example, so as to protect the strain gauge 12.
- the wireless tag 2 is attached to the axial end face of the outer ring lib, so that bidirectional data communication with the R / W device 3 can be performed.
- a circumferential groove is formed around the entire outer circumferential surface of the outer ring l ib, a strain gauge 12 is installed in this circumferential groove, and a wireless tag 2 is further installed.
- a configuration may be adopted.
- the above-described strain gauge 12 is connected to the wireless tag 2 via a signal line (not shown), and the detection result of the gauge 12 is transmitted to the R / W device 3 (FIG. 1).
- the transmission / reception unit 6c (FIG. 2) is provided with an interface unit capable of inputting a detection signal from the strain gauge 12, and the interface unit converts the analog detection signal into a digital signal. Is converted to a data signal.
- the control unit 6a (FIG. 2) stores the data signal indicating the preload detection value as the bearing operation information in the storage unit 6b (FIG. 2), or transmits / receives the client terminal via the RZW device 3 by the transmission / reception unit 6c. 5 (Fig. 1).
- the storage unit 6b is provided with a ball bearing 11 such as a strain gauge 12 having unique gauge characteristics.
- the information necessary for embedding (that is, the assembly standard) is stored in advance as guidance information of the additional information. More specifically, the output characteristics (gauge characteristics) of the strain gauge 12 are delicate due to the mounting accuracy such as the actual mounting position and mounting strength in the notch l lbl or the sensor characteristics of the gauge itself. In order to monitor the detection signals of the plurality of strain gauges 12 with the same monitor, it is necessary to adjust the gain of an amplifier circuit that amplifies the signal output.
- the bearing maker grasps the gage characteristics most suitable for the monitor of the automobile maker before shipment from the factory, and The grasped gauge characteristics are stored in the storage unit 6b in advance as additional information.
- the inner ring l lal, l la 2 and the outer ring l ib of the ball bearing 11 are, as shown in FIG.
- the worker receives guidance information including the gauge characteristics of the strain gauge 12 stored in the storage unit 6b by the R / W device 3. Is read and transferred to the client terminal 5.
- the client terminal 5 is provided with the amplifier circuit functionally by, for example, software.
- the terminal 5 extracts a gain value included in the transferred gauge characteristic.
- optimal gain adjustment for the strain gauge 12 installed on the ball bearing 11 is automatically performed based on the extracted gain value (step S2).
- the client terminal 5 inputs the detection signal of the strain gauge 12 transmitted via the wireless tag 2 and the RZW device 3, amplifies the signal by the amplifier circuit, and displays it on the display (step S3). . Then, while checking the display, the worker adjusts the tightening force on the nut 31 so that a predetermined preload is applied to the ball bearing 11, and incorporates the ball bearing 11.
- the storage unit 6b stores the gage characteristics and the like of the strain gages 12 attached to the ball bearings 11 as additional information.
- the ball bearing 11 can be easily assembled without adjustment and accurately adjusted to a predetermined preload.
- the present invention is applied to a ball bearing that rotatably supports a rotating shaft S of a rotating device ⁇ ⁇ a double-row angular ball bearing that is incorporated in a wheel hub of an automobile.
- the present invention is not limited to the above-described bearing types and supported components as long as the bearing supporting the supported component is provided with a wireless tag capable of transmitting and receiving information.
- various types of bearings such as roller bearings, tapered roller bearings, needle roller bearings, and other rolling bearings, slide bearings, and linear motion bearings that support a linearly moving supported component by rolling or sliding contact.
- the present invention can be applied to a dynamic pressure bearing in which a groove for generating dynamic pressure is formed on one surface.
- the management system using the R / W device has been described. Any type of device that can write the above-mentioned bearing operation information into the storage unit according to the bearing operation may be used instead of the R / W device.
- the present invention is not limited to this. What is not done.
- the conditions such as operating temperature and time
- the control unit installs these conditions and the bearing outside or directly on the bearing.
- the configuration may be such that the degree of deterioration of the grease is determined using data such as the detected temperature from the temperature sensor.
- the operation of writing the bearing operation information in the storage unit is performed.
- the control unit of the wireless tag is provided with an abnormality determination function based on the measurement data, and the bearing is determined in accordance with the abnormality determination result in the control unit.
- the operation of writing the operation information may be stopped.
- the configuration has been described in which the wireless tag is connected to the strain gauge, and the wireless tag converts an analog detection signal from the strain gauge into digital data and transmits the digital data to the client terminal.
- the present invention is not limited to this, and a configuration may be adopted in which a separate transmitter for analogly transmitting the detection signal of the strain gauge force is provided.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20040732739 EP1624206B1 (en) | 2003-05-13 | 2004-05-13 | Bearing management system and method for the same |
DE200460026049 DE602004026049D1 (de) | 2003-05-13 | 2004-05-13 | Lagerverwaltungssystem und verfahren dafür |
US10/556,338 US7659818B2 (en) | 2003-05-13 | 2004-05-13 | Bearing, and management system and method for the same |
JP2005506184A JP4618125B2 (ja) | 2003-05-13 | 2004-05-13 | 軸受管理システム |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003134769 | 2003-05-13 | ||
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US (1) | US7659818B2 (ja) |
EP (1) | EP1624206B1 (ja) |
JP (1) | JP4618125B2 (ja) |
CN (2) | CN101196212B (ja) |
DE (1) | DE602004026049D1 (ja) |
WO (1) | WO2004102018A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
EP1624206A1 (en) | 2006-02-08 |
CN100394044C (zh) | 2008-06-11 |
EP1624206B1 (en) | 2010-03-17 |
US7659818B2 (en) | 2010-02-09 |
CN101196212B (zh) | 2010-12-08 |
US20060232425A1 (en) | 2006-10-19 |
CN1784555A (zh) | 2006-06-07 |
JP4618125B2 (ja) | 2011-01-26 |
EP1624206A4 (en) | 2007-01-24 |
JPWO2004102018A1 (ja) | 2006-07-13 |
DE602004026049D1 (de) | 2010-04-29 |
CN101196212A (zh) | 2008-06-11 |
WO2004102018A8 (ja) | 2005-03-17 |
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