WO2022059572A1 - 軸受装置 - Google Patents
軸受装置 Download PDFInfo
- Publication number
- WO2022059572A1 WO2022059572A1 PCT/JP2021/032958 JP2021032958W WO2022059572A1 WO 2022059572 A1 WO2022059572 A1 WO 2022059572A1 JP 2021032958 W JP2021032958 W JP 2021032958W WO 2022059572 A1 WO2022059572 A1 WO 2022059572A1
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- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- housing
- bearing device
- inner diameter
- lid portion
- Prior art date
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- 238000004891 communication Methods 0.000 claims abstract description 45
- 239000007769 metal material Substances 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- 229910052755 nonmetal Inorganic materials 0.000 claims description 31
- 238000010248 power generation Methods 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 description 14
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 4
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
- 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
-
- 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
-
- 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
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
- F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
- F16C19/543—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact in O-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/067—Fixing them in a housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/08—Rigid support of bearing units; Housings, e.g. caps, covers for spindles
- F16C35/12—Rigid support of bearing units; Housings, e.g. caps, covers for spindles with ball or roller bearings
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
-
- 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
Definitions
- the present invention relates to a bearing device having a wireless communication function.
- a detection device such as a sensor may be attached to a machine including a rolling mechanism or a swinging mechanism, which is used for the spindle of a machine tool, in order to control or monitor the state of the machine.
- a detection device such as a sensor may be attached to a machine including a rolling mechanism or a swinging mechanism, which is used for the spindle of a machine tool, in order to control or monitor the state of the machine.
- it is effective to detect the characteristics in the vicinity of the bearing inside the machine, so it is desirable to arrange various sensors such as rotation sensors and temperature sensors in the vicinity of the bearing inside the machine. ..
- Patent Document 1 a wireless sensor with an antenna is attached to the outer ring of the bearing, and the data detected by this wireless sensor is wirelessly transmitted by radio waves.
- the bearing device to be transmitted to the outside is disclosed in.
- the housing located around the part where the wireless sensor is attached A space (hole or groove) is formed inside to facilitate the propagation of radio waves transmitted from the wireless sensor to the outside.
- a space (hole or groove) for facilitating the propagation of radio waves is formed inside the housing arranged around the bearing. There is.
- the present disclosure has been made to solve the above problems, the purpose of which is to wirelessly transmit data without forming a space inside the housing around the bearing to facilitate the propagation of radio waves. It is to provide a bearing device which can transmit to the outside.
- the bearing device has a tubular housing for accommodating a rotating body inside, an inner ring fixed to the outer diameter surface of the rotating body, and an outer ring fixed to the inner diameter surface of the housing, and rotates.
- the first bearing is sandwiched between a first bearing that rotatably supports the body with respect to the housing, a lid that is fitted to the inner diameter surface of the housing in contact with the axial end face of the housing and the axial end face of the outer ring. It is provided with a communication device which is arranged in an area facing the lid and performs wireless communication using electromagnetic waves.
- a non-metal layer made of a non-metal material is formed.
- the communication device is arranged in a region between the first bearing and the second bearing arranged at a position facing the lid portion across the first bearing.
- the bearing device is located in the area between the first bearing and the second bearing and further comprises a self-powering device that supplies power to the communication device.
- the non-metallic material is ceramics.
- the first bearing is an angular contact ball bearing.
- the rotating body is the spindle of the machine tool.
- a bearing device capable of transmitting data wirelessly to the outside without forming a space for facilitating the propagation of radio waves inside the housing around the bearing.
- FIG. 3 is a cross-sectional view (No. 3) showing a schematic configuration of a bearing device.
- FIG. 1 is a cross-sectional view showing a schematic configuration of a bearing device 1 according to the first embodiment.
- the bearing device 1 shown in FIG. 1 is used, for example, as a built-in motor type spindle device for a machine tool.
- a motor (not shown) is incorporated in one end side (right side in FIG. 1) of the spindle 4 supported by the bearing device 1, and an end mill or the like (not shown) is cut in the other end side (left side in FIG. 1).
- the tool is connected.
- the shaft diameter of the spindle 4 is set to 70 mm, and the maximum rotation speed of the spindle 4 is set to 20000 rpm.
- the bearing device 1 includes a metal tubular housing 3, a bearing 5 including two bearings 5a and 5b, a spacer 6 arranged between the bearing 5a and the bearing 5b, and a metal presser lid 10. , 20 and a communication module 140.
- the spindle 4 is provided inside the housing 3 and is rotatably supported by the bearings 5a and 5b with respect to the housing 3.
- the bearing 5a is a rolling bearing including a metal inner ring 5ia, a metal outer ring 5ga, a plurality of rolling elements Ta arranged between the inner ring 5ia and the outer ring 5ga, and a cage Rta. The distance between the plurality of rolling elements Ta is maintained by the cage Rta.
- the bearing 5b is a rolling bearing including a metal inner ring 5ib, a metal outer ring 5gb, a plurality of rolling elements Tb arranged between the inner ring 5ib and the outer ring 5gb, and a cage Rtb. The spacing between the plurality of rolling elements Tb is maintained by the cage Rtb.
- the inner ring 5ia of the bearing 5a and the inner ring 5ib of the bearing 5b separated in the axial direction are fitted to the spindle 4 in a tightly fitted state (press-fitting state).
- the spacer 6 includes an inner ring spacer 6i and an outer ring spacer 6g.
- the inner ring spacer 6i is arranged between the inner rings 5ia and 5ib, and the outer ring spacer 6g is arranged between the outer rings 5ga and 5gb.
- bearings 5a and 5b angular contact ball bearings, deep groove ball bearings, tapered roller bearings and the like can be used.
- An angular contact ball bearing is used for the bearing device 1 shown in FIG. 1, and two bearings 5a and 5b are installed in a back combination (DB combination).
- the arrangement of the bearings is not limited to the back combination, and may be, for example, a front combination.
- a refrigerant flow path (not shown) is formed inside the housing 3.
- the bearings 5a and 5b can be cooled by flowing the refrigerant through the refrigerant flow path of the housing 3.
- Each of the presser lids 10 and 20 is an annular member for suppressing the axial displacement of the housing 3 with respect to the bearings 5a and 5b.
- the presser lid 10 is fitted to the inner diameter surface of the housing 3 in a state of being in contact with one side in the axial direction of the housing 3 (the left side in which the cutting tool is provided in FIG. 1) and the end surface on one side in the axial direction of the outer ring 5ga. Will be done.
- the presser lid 20 is fitted to the inner diameter surface of the housing 3 in a state of being in contact with the other end surface of the housing 3 in the axial direction (the right side where the motor is provided in FIG. 1) and the one end surface of the outer ring 5 gb in the axial direction.
- a communication module 140 with a built-in sensor is arranged between the bearing 5a and the bearing 5b. More specifically, the communication module 140 is attached to the inside of the outer ring spacer 6 g arranged between the outer rings 5 ga and 5 gb. When viewed with reference to the bearing 5a, the communication module 140 is arranged in a region facing the holding lid 10 with the bearing 5a interposed therebetween. Further, when viewed with reference to the bearing 5b, the communication module 140 is arranged in a region facing the holding lid 20 with the bearing 5b interposed therebetween.
- FIG. 2 is a block diagram showing an example of the configuration of the communication module 140 according to the present embodiment.
- the communication module 140 includes a plurality of sensors (heat flow sensor 11 for measuring heat flow flux, temperature sensor 56 for measuring temperature, vibration sensor 57 for measuring vibration, and a plurality of sensors for controlling the spindle 4 and monitoring the state of the bearing device 1. And a load sensor 59 for measuring the preload, etc.), a communication device 141, and a power generation device 142 are built-in.
- the communication device 141 is connected to each sensor by an electric wire, and collects data indicating the detection result of each sensor.
- the communication device 141 may be wirelessly connected to each sensor and wirelessly collect data indicating the detection result of each sensor.
- the communication device 141 transmits the data collected from each sensor to the external device 200 provided outside the bearing device 1 by wireless communication using electromagnetic waves.
- the communication device 141 conforms to, for example, a communication standard of Bluetooth (registered trademark), and can wirelessly transmit data indicating the detection result of each sensor to the external device 200 using radio waves in the frequency band of 2.4 GHz. ..
- the power generation device 142 is connected to the communication device 141 and self-generates electric power for driving the communication device 141.
- a thermoelectric element (Pelche element) that generates power by the Zeebeck effect can be used. If electric power is required to drive each sensor, the sensor may be supplied with electric power from the power generation device 142.
- each sensor, the communication device 141, and the power generation device 142 are modularized into one as a communication module 140 and arranged in the outer ring spacer 6g.
- each sensor and the communication device will be described.
- the 141 and the power generation device 142 may be arranged individually without being modularized.
- the communication module 140 is arranged between the bearing 5a and the bearing 5b, and is configured to wirelessly transmit data indicating the detection results of each sensor to the outside. Will be done.
- the bearing 5a, the housing 3 around the bearing 5a, and the holding lids 10 and 20 are all made of metal, it is difficult for radio waves to pass from the communication module 140 to the outside of the bearing 5a and the outside of the bearing 5b.
- the contact portion of the presser cover 10 with the housing 3 (the axial side end surface of the presser cover 10 on one side of the housing 3 and the end surface on one side of the presser cover 10).
- a non-metal layer 10a made of ceramics, which is a non-metal material, is provided on the portion that fits with the inner diameter surface).
- the contact portion of the presser lid 20 with the housing 3 (the portion of the presser cover 20 that fits with the axial end surface and the inner diameter surface of the other side of the housing 3) is a non-metal made of ceramics, which is a non-metal material.
- the layer 20a is provided. Examples of the ceramics used for the non-metal layers 10a and 20a include silicon nitride, alumina, and zirconia.
- the data from the communication module 140 is passed through the non-metal layers 10a and 20a provided at the contact portions with the housing 3 in the presser lids 10 and 20 to pass through the bearing device 1. It becomes possible to transmit wirelessly to the outside of 1. As a result, data can be transmitted wirelessly to the outside without forming a space inside the housing 3 for facilitating the propagation of radio waves.
- the power generation device 142 that self-generates the electric power for driving the communication device 141 is arranged between the bearing 5a and the bearing 5b, which is the same as the communication device 141. Therefore, the communication device 141 can be driven without providing an electric wire for supplying the drive power to the communication device 141 outside the bearing device 1.
- FIG. 1 shows an example in which the non-metal layers 10a and 20a are provided on a part of the pressing lids 10 and 20 in the circumferential direction, but the pressing lids 10 and 20 are not fitted to the inner diameter surface of the housing 3.
- the non-metal layers 10a and 20a may be provided over the entire circumferential direction of the presser lids 10 and 20.
- the material of the non-metal layers 10a and 20a may be any non-metal material capable of passing electromagnetic waves, and is not limited to the above-mentioned ceramics.
- the material of the non-metal layers 10a and 20a may be a resin material such as PEEK (polyetheretherketone) or PPS (polyphenylene sulfide), a material reinforced with carbon fiber or glass fiber, or glass or rubber. good.
- non-metal layer is not necessarily limited to being provided at both ends in the axial direction of the housing 3. That is, it may be provided with only one of the non-metal layers 10a and 20a.
- FIG. 3 is a cross-sectional view showing a schematic configuration of the bearing device 1A according to the second embodiment.
- the above-mentioned non-metal layer is arranged in the housing 3 instead of the holding lids 10 and 20.
- the housing 3 and the holding lids 10 and 20 of the bearing device 1 shown in FIG. 1 are changed to the housing 3A and the holding lids 10A and 20A, respectively.
- Other configurations of the bearing device 1A are the same as those of the bearing device 1 described above.
- the presser lids 10A and 20A are obtained by removing the non-metal layers 10a and 20a from the presser foot lids 10 and 20 described above, respectively.
- non-metal layers 3a and 3b made of a non-metal material are provided at the contact portions of the housing 3A with the presser lids 10A and 20A, respectively.
- a non-metal layer 3a is provided on one side axial end portion and a part of the inner diameter surface of the housing 3A, and a non-metal layer is provided on the other side axial end portion and a part of the inner diameter surface of the housing 3A.
- 3b is provided.
- the data from the communication module 140 is wirelessly transmitted to the outside of the bearing device 1A via the non-metal layers 3a and 3b provided at both ends of the housing 3. It becomes possible to do. As a result, data can be transmitted wirelessly to the outside without forming a space inside the housing 3A for facilitating the propagation of radio waves.
- FIG. 4 is a cross-sectional view showing a schematic configuration of the bearing device 1B according to the third embodiment.
- the housing 3A and the presser cover 10A of the bearing device 1A shown in FIG. 3 are changed to the housing 3 and the presser cover 10B, respectively, and an inner ring spacer 32 is added.
- Other configurations of the bearing device 1B are the same as those of the bearing device 1A described above.
- the housing 3 of the bearing device 1B is the same as the housing 3 of the bearing device 1 described above.
- a labyrinth portion 30 is provided.
- the labyrinth portion 30 is formed by an inner diameter portion 31 of the presser lid 10B and an inner ring spacer 32 arranged between the inner diameter surface of the presser lid 10B and the outer diameter surface of the main shaft 4 and fitted to the main shaft 4.
- a resin material is used as the material for the inner diameter portion 31 and the inner ring spacer 32 of the holding lid 10B forming the labyrinth portion 30. That is, the labyrinth portion 30 forms a non-metal layer.
- the data from the communication module 140 can be wirelessly transmitted to the outside of the bearing device 1B via the labyrinth section 30 (non-metal layer). Become.
- data can be transmitted wirelessly to the outside without forming a space inside the housing 3A for facilitating the propagation of radio waves.
- FIG. 4 shows an example in which a non-metal layer is formed on both the inner diameter portion 31 and the inner ring spacer 32 of the presser lid 10B forming the labyrinth portion 30, the inner diameter portion 31 and the inner ring spacer 32 of the presser lid 10B are shown.
- the non-metal layer may be formed on only one of the 32.
- 1,1A, 1B bearing device 3,3A housing, 3a, 3b, 10a, 20a non-metal layer, 4 spindle, 5,5a, 5b bearing, 5ga, 5gb outer ring, 5ia, 5ib inner ring, 6 spacer, 6g outer ring Bearing, 6i, 32 Inner ring bearing, 10,10A, 10B, 20,20A Presser lid, 11 heat flow sensor, 30 labyrinth part, 31 inner diameter part, 56 temperature sensor, 57 vibration sensor, 59 load sensor, 140 communication module, 141 communication device, 142 power generation device, 200 external device, Rta, Rtb cage, Ta, Tb rolling element.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rolling Contact Bearings (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
(4) ある態様においては、第1軸受は、アンギュラ玉軸受である。
図1は、本実施の形態1による軸受装置1の概略構成を示す断面図である。
上述のように、本実施の形態による軸受装置1においては、通信モジュール140が軸受5aと軸受5bとの間に配置され、各センサの検出結果を示すデータを無線で外部に送信するように構成される。
図3は、本実施の形態2による軸受装置1Aの概略構成を示す断面図である。軸受装置1Aにおいては、上述の非金属層が押え蓋10,20ではなくハウジング3に配置される。具体的には、軸受装置1Aは、上述の図1に示す軸受装置1のハウジング3および押え蓋10,20を、それぞれハウジング3Aおよび押え蓋10A,20Aに変更したものである。軸受装置1Aのその他の構成は、上述の軸受装置1と同じである。
図4は、本実施の形態3による軸受装置1Bの概略構成を示す断面図である。軸受装置1Bは、上述の図3に示す軸受装置1Aのハウジング3Aおよび押え蓋10Aをそれぞれハウジング3および押え蓋10Bに変更し、さらに内輪間座32を追加したものである。軸受装置1Bのその他の構成は、上述の軸受装置1Aと同じである。なお、軸受装置1Bのハウジング3は、上述の軸受装置1のハウジング3と同じである。
Claims (5)
- 回転体を内部に収容する筒状のハウジングと、
前記回転体の外径面に固定される内輪と前記ハウジングの内径面に固定される外輪とを有し、前記回転体を前記ハウジングに対して回転自在に支持する第1軸受と、
前記ハウジングの軸方向端面および前記外輪の軸方向端面に接触した状態で前記ハウジングの内径面に嵌合される蓋部と、
前記第1軸受を挟んで前記蓋部と対向する領域に配置され、電磁波を用いた無線通信を行なう通信装置とを備え、
前記蓋部における前記ハウジングとの接触部分、前記ハウジングにおける前記蓋部との接触部分、前記蓋部の内径部分、前記蓋部の内径面と前記回転体の外径面との間に配置される部材の少なくともいずれかに、非金属材料を素材とする非金属層が形成される、軸受装置。 - 前記通信装置は、前記第1軸受と、前記第1軸受を挟んで前記蓋部と対向する位置に配置された第2軸受との間の領域に配置され、
前記第1軸受と前記第2軸受との間の領域に配置され、前記通信装置に電力を供給する自己発電装置をさらに備える、請求項1に記載の軸受装置。 - 前記非金属材料は、セラミックスである、請求項1または2に記載の軸受装置。
- 前記第1軸受は、アンギュラ玉軸受である、請求項1~3のいずれかに記載の軸受装置。
- 前記回転体は、工作機械の主軸である、請求項1~4のいずれかに記載の軸受装置。
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KR1020237009948A KR20230066572A (ko) | 2020-09-15 | 2021-09-08 | 베어링 장치 |
CN202180062662.XA CN116710666A (zh) | 2020-09-15 | 2021-09-08 | 轴承装置 |
US18/021,783 US20230400064A1 (en) | 2020-09-15 | 2021-09-08 | Bearing apparatus |
EP21869259.8A EP4215770A1 (en) | 2020-09-15 | 2021-09-08 | Bearing device |
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JP2020154234A JP2022048420A (ja) | 2020-09-15 | 2020-09-15 | 軸受装置 |
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US (1) | US20230400064A1 (ja) |
EP (1) | EP4215770A1 (ja) |
JP (1) | JP2022048420A (ja) |
KR (1) | KR20230066572A (ja) |
CN (1) | CN116710666A (ja) |
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JP2022023304A (ja) * | 2020-07-27 | 2022-02-08 | Ntn株式会社 | 軸受装置 |
JP2024067320A (ja) * | 2022-11-04 | 2024-05-17 | Ntn株式会社 | 軸受装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55151923U (ja) * | 1979-04-18 | 1980-11-01 | ||
JPS6192320A (ja) * | 1984-10-09 | 1986-05-10 | Koyo Seiko Co Ltd | 高温,腐食等特殊環境で使用する軸受 |
JP2003028151A (ja) | 2001-07-11 | 2003-01-29 | Nsk Ltd | ワイヤレスセンサ付軸受装置 |
JP2013017177A (ja) * | 2011-07-04 | 2013-01-24 | Ntn-Snr Roulements | 接触を介する案内部材の状態に特徴的な少なくとも1つの物理的な大きさをモニタリングするための、pifaアンテナを備えたモジュール |
JP2020060227A (ja) * | 2018-10-09 | 2020-04-16 | Ntn株式会社 | 軸受装置 |
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2020
- 2020-09-15 JP JP2020154234A patent/JP2022048420A/ja active Pending
-
2021
- 2021-09-08 WO PCT/JP2021/032958 patent/WO2022059572A1/ja active Application Filing
- 2021-09-08 KR KR1020237009948A patent/KR20230066572A/ko active Search and Examination
- 2021-09-08 CN CN202180062662.XA patent/CN116710666A/zh active Pending
- 2021-09-08 US US18/021,783 patent/US20230400064A1/en active Pending
- 2021-09-08 EP EP21869259.8A patent/EP4215770A1/en active Pending
- 2021-09-10 TW TW110133713A patent/TW202219397A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55151923U (ja) * | 1979-04-18 | 1980-11-01 | ||
JPS6192320A (ja) * | 1984-10-09 | 1986-05-10 | Koyo Seiko Co Ltd | 高温,腐食等特殊環境で使用する軸受 |
JP2003028151A (ja) | 2001-07-11 | 2003-01-29 | Nsk Ltd | ワイヤレスセンサ付軸受装置 |
JP2013017177A (ja) * | 2011-07-04 | 2013-01-24 | Ntn-Snr Roulements | 接触を介する案内部材の状態に特徴的な少なくとも1つの物理的な大きさをモニタリングするための、pifaアンテナを備えたモジュール |
JP2020060227A (ja) * | 2018-10-09 | 2020-04-16 | Ntn株式会社 | 軸受装置 |
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JP2022048420A (ja) | 2022-03-28 |
KR20230066572A (ko) | 2023-05-16 |
EP4215770A1 (en) | 2023-07-26 |
TW202219397A (zh) | 2022-05-16 |
CN116710666A (zh) | 2023-09-05 |
US20230400064A1 (en) | 2023-12-14 |
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