WO2004076874A1 - 状態検出装置及び状態検出方法並びに状態検出用プログラム及び情報記録媒体 - Google Patents
状態検出装置及び状態検出方法並びに状態検出用プログラム及び情報記録媒体 Download PDFInfo
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- WO2004076874A1 WO2004076874A1 PCT/JP2004/002398 JP2004002398W WO2004076874A1 WO 2004076874 A1 WO2004076874 A1 WO 2004076874A1 JP 2004002398 W JP2004002398 W JP 2004002398W WO 2004076874 A1 WO2004076874 A1 WO 2004076874A1
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- detected
- maximum value
- determining
- state
- periodicity
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Classifications
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- 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
- G01M13/045—Acoustic or vibration analysis
-
- 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
- F16C29/00—Bearings for parts moving only linearly
-
- 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
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
-
- 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
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
- F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
- F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/667—Details of supply of the liquid to the bearing, e.g. passages or nozzles related to conditioning, e.g. cooling, filtering
-
- 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
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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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/01—Monitoring wear or stress of gearing elements, e.g. for triggering maintenance
-
- 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
-
- 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 belongs to the technical field of a state detection device, a state detection method, a state detection program, and an information recording medium, and more specifically, an operation state of the linear motion rolling guide device during operation of the linear motion rolling guide device.
- the present invention belongs to the technical field of a state detection device and a state detection method, a state detection program for detecting the operation state, and an information recording medium in which the state detection program is recorded in a computer-readable manner.
- a rail Conventionally, a rail, a moving block that moves on the rail in the longitudinal direction thereof, and a moving block that intervenes between the rail and the moving block and circulates (revolves) while rotating (rotating) itself.
- the so-called linear motion rolling guide device which includes a plurality of poles (rolling elements) that move blocks with high precision, is widely used.
- the range of applications has been extended to members supporting pendulum motion in, and even to the seismic isolation structure of buildings.
- Diagnosis methods include a vibration detection method that monitors the occurrence of vibrations in the mechanical system and diagnoses the operating state, and removes the lubricating oil used in the mechanical system and evaluates the quality of the operating state.
- An oil evaluation method for diagnosing oil an electric resistance method for measuring the electric resistance between members driven via lubricating oil in the mechanical system, and an electric resistance method for diagnosing the operating state, or using lubricating oil in the mechanical system
- the vibration detection method when used, in the linear motion rolling guide device, the ball as the rolling element revolves in the circulating portion while rotating on its own, so that there are many vibration sources other than the vibration indicating abnormalities. There was a problem that the vibration to be detected could not be detected accurately.
- an object of the present invention is to accurately detect the operating state of the linear motion rolling guide device in real time, thereby realizing the linear motion rolling guide device.
- a state detecting device and a state detecting method capable of improving the maintainability of a user of the linear motion rolling guide device, further contributing to prolonging the service life and improving the quality of a device or equipment incorporating the linear motion rolling guide device.
- Another object of the present invention is to provide a state detection program for detecting the operation state and an information recording medium on which the state detection program is recorded so as to be readable by a computer. Disclosure of the invention
- an invention according to claim 1 is a state detection device that detects a current operation state in a linear motion rolling guide device, and includes a plurality of rolling elements included in the linear motion rolling guide device.
- a moving member or a track member included in the linear motion rolling guide device and the rolling element which occurs when the orbit revolves in the circulating portion, and a rolling surface included in the linear motion rolling guide device and the rolling surface.
- AE that detects a wave elastically generated at least due to contact with the rolling element or collision between the rolling elements, and generates an electrical detection signal corresponding to the detected wave.
- Acoustic Emission) detection means such as a sensor, and determination means such as a signal processing unit for determining the content of the operation state based on the generated detection signal.
- the current motion state of the linear motion rolling guide device is detected by detecting the above-mentioned wave motion elastically generated by the operation of the linear motion rolling guide device.
- the operating state of the linear motion rolling guide device can be detected without disassembling the linear motion rolling guide device and eliminating the influence of vibration caused by the operation.
- the invention described in claim 2 is characterized in that in the state detection device described in claim 1, the determination means includes a signal processing for determining presence or absence of periodicity in the generated detection signal.
- a periodicity determining unit such as a unit, and when it is determined that the periodicity is present, a maximum in the generated detection signal
- a maximum value detection unit such as a signal processing unit for detecting a value
- a maximum value determination unit such as a signal processing unit for determining whether the detected maximum value is equal to or greater than a preset maximum value threshold
- state determination means such as a signal processing unit for notifying the determination is provided. ing.
- the linear motion rolling guide device is in a poor lubrication state. Since this is notified, the occurrence of poor lubrication in the linear motion rolling guide device can be simply and accurately detected in real time during operation.
- the invention according to claim 3 is the state detection device according to claim 1, wherein the determination unit determines whether or not the generated detection signal has periodicity.
- a maximum value detection unit such as a signal processing unit that detects the maximum value of the generated detection signal when it is determined that there is the periodicity.
- a maximum value judging unit such as a signal processing unit for judging whether or not the value is equal to or more than a preset maximum value threshold value; and, when the detected maximum value is less than the maximum value threshold value, the generated detection
- An event rate detection unit such as a signal processing unit that detects an event rate in a signal
- an event rate determination unit such as a signal processing unit that determines whether the detected event rate is equal to or greater than a preset event rate threshold. If the detected event rate is When the linear motion rolling guide device is less than the rate threshold value, it is determined that the linear motion rolling guide device may be in a lubrication failure state, and a state determination unit such as a signal processing unit for notifying the determination is provided. .
- the linear motion Rolling guides fall into poor lubrication Since it is judged that there is a possibility that the lubrication may occur, the fact is notified, and it is possible to simply and accurately detect the possibility of occurrence of a lubrication failure state in the linear motion rolling guide device in real time during operation. it can.
- the invention according to claim 4 is the state detection device according to claim 1, wherein the determination unit includes a signal for determining whether the generated detection signal has periodicity.
- a periodicity determination unit such as a processing unit; a maximum value detection unit such as a signal processing unit that detects a maximum value of the generated detection signal when it is determined that there is the periodicity; Maximum value determining means such as a signal processing unit for determining whether or not the maximum value is equal to or greater than a preset maximum value threshold value; and if the detected maximum value is less than the maximum value threshold value,
- An event rate detection unit such as a signal processing unit that detects an event rate in the detection signal; and an event rate determination unit such as a signal processing unit that determines whether the detected event rate is equal to or greater than a preset event rate threshold.
- the detected event rate is the When the ratio is equal to or larger than the threshold value, it is determined that flaking has occurred in the linear motion rolling guide device, and a state determination means such as a signal processing unit for notifying the determination
- the linear motion Since it is determined that flaking has occurred in the rolling guide device and the fact is notified, it is possible to easily and accurately detect the occurrence of flaking in the linear motion rolling guide device in real time during operation. it can.
- the invention according to claim 5 is the state detection device according to claim 1, wherein the determination unit determines whether or not the detected detection signal has periodicity.
- a periodicity determining means such as a section, and when it is determined that there is no periodicity, an effective value of the detected signal is detected.
- An effective value detecting unit such as a signal processing unit that outputs the effective value; an effective value determining unit such as a signal processing unit that determines whether the detected effective value is equal to or greater than a preset effective value threshold; When the effective value is equal to or greater than the effective value threshold, the linear motion rolling guide device is determined to be contaminated with foreign matter, and state determination means such as a signal processing unit for notifying the determination is provided. I have.
- the generated detection signal has no periodicity and the effective value in the detection signal is equal to or more than the effective value threshold, it is determined that foreign matter has entered the linear motion rolling guide device, and Therefore, the occurrence of foreign matter in the linear motion rolling guide device can be simply and accurately detected in real time during operation.
- the invention according to claim 6 is the state detection device according to claim 1, wherein the determination unit includes a signal for determining whether or not the detected detection signal has periodicity.
- a periodicity determining unit such as a processing unit; and an effective value detecting unit such as a signal processing unit that detects an effective value of the detected signal when it is determined that there is no periodicity.
- An effective value determination unit such as a signal processing unit that determines whether the effective value is equal to or greater than a preset effective value threshold; and, when the detected effective value is less than the effective value threshold, the current operating state.
- a state determination means such as a signal processing unit for notifying that is normal, and notifying the fact.
- the generated detection signal has no periodicity and the effective value in the detection signal is less than the effective value threshold, it is determined that the current operation state of the linear motion rolling guide device is normal. Therefore, whether or not the operating state of the linear motion rolling guide device is normal can be simply and accurately detected in real time during the operation.
- the invention according to claim 7 is a state detection method for detecting a current operation state in a linear motion rolling guide device, A contact or collision between a moving member or a track member included in the linear motion rolling guide device and the rolling member, which occurs when a plurality of rolling elements included in the linear motion rolling guide device revolve in the circulating portion; A wave elastically generated due to at least one of contact between the rolling surface included in the dynamic rolling guide device and the rolling element, or collision between the rolling elements, is detected, and the detected wave is detected.
- the operating state of the linear motion rolling guide device can be detected without disassembling the linear motion rolling guide device and eliminating the influence of vibration caused by the operation.
- the invention described in claim 8 is a method for detecting a state according to claim 7, wherein the determining step includes determining periodicity in the generated detection signal.
- the linear motion rolling guide device when the generated detection signal has periodicity and the maximum value in the detection signal is equal to or greater than the maximum value threshold, it is determined that the linear motion rolling guide device is in a state of poor lubrication, and Therefore, the occurrence of poor lubrication in the linear motion rolling guide device can be easily and accurately detected in real time during operation.
- the determining step includes: a periodicity determining step of determining whether or not the generated detection signal has periodicity; and A maximum value detection step of detecting a maximum value of the signal; a maximum value determination step of determining whether the detected maximum value is equal to or greater than a preset maximum value threshold; and An event rate detecting step of detecting an event rate in the generated detection signal when the value is less than a value threshold, and an event rate determination of determining whether the detected event rate is equal to or greater than a preset event rate threshold When the detected event rate is less than the event rate threshold, it is determined that the linear motion rolling guide device may be in a lubrication failure state, and a state determination to notify the user of the possibility is provided. Process and by It has been made.
- the linear motion In order to determine that the rolling guide device may be in a state of lubrication failure and to notify that fact, the possibility of occurrence of a lubrication failure condition in the linear motion rolling guide device is determined in real time during operation. Thus, simple and accurate detection is possible.
- the invention according to claim 10 is the method for detecting a state according to claim 7, wherein the determining step includes a step of determining whether the generated detection signal has periodicity. Gender determining step; a maximum value detecting step of detecting a maximum value of the generated detection signal when it is determined that the periodicity is present; and a step of determining the detected maximum value to be equal to or larger than a preset maximum value threshold value.
- the linear motion Since it is determined that flaking has occurred in the rolling guide device and the fact is notified, it is possible to easily and accurately detect the occurrence of flaking in the linear motion rolling guide device in real time during operation. it can.
- the invention according to claim 11 is the method for detecting a state according to claim 7, wherein the determining step includes a step of determining whether the detected detection signal has periodicity. Gender determining step, an effective value detecting step of detecting an effective value of the detected signal when it is determined that the periodicity is not present, and whether the detected effective value is equal to or greater than a preset effective value threshold value. An effective value judging step of judging whether or not foreign matter is mixed in the linear motion rolling guide device when the detected effective value is equal to or more than the effective value threshold value, and a notification to that effect is given. And a state determination step.
- the generated detection signal has no periodicity and the effective value in the detection signal is equal to or more than the effective value threshold, it is determined that foreign matter has entered the linear motion rolling guide device, and Therefore, the occurrence of foreign matter in the linear motion rolling guide device can be simply and accurately detected in real time during operation.
- the invention according to claim 12 is the method for detecting a state according to claim 7, wherein the determining step includes determining a presence or absence of periodicity in the detected detection signal. Gender determining step; and, when it is determined that the periodicity is not present, an effective value for detecting an effective value of the detected detection signal.
- a state determining step of determining that the operation state is normal and notifying the user of the fact.
- the invention according to claim 13 is a state detection device that detects a current operation state of the linear motion rolling guide device, and is included in the linear motion rolling guide device.
- a computer included in a state detection device including a detection unit that performs the operation is caused to function as a determination unit that determines the content of the operation state based on the generated detection signal.
- the computer functions to detect the above-described wave motion elastically generated by the operation of the linear motion rolling guide device and to detect the current operation state of the linear motion rolling guide device.
- the operation state can be detected in real time without disassembling the linear motion rolling guide device and eliminating the influence of vibration caused by the operation.
- the invention described in claim 14 is a program that enables the state detection program described in claim 13 to be readable by the computer. Has been recorded.
- the computer functions so as to detect, while the linear motion rolling guide device is operating, it is possible to eliminate the influence of vibration caused by the operation without disassembling the linear motion rolling guide device in real time.
- the operation state can be detected.
- FIG. 1 is a diagram illustrating the principle of the present invention, wherein (a) and (b) are diagrams illustrating generation of an extended AE wave according to the embodiment, and (c) corresponds to the extended AE wave. It is an example of an envelope detection waveform.
- FIG. 2 is a block diagram illustrating a configuration of the state detection device according to the embodiment.
- FIG. 3 is a longitudinal sectional view illustrating the configuration of the AE sensor according to the embodiment.
- FIG. 4 is a diagram (I) showing an installation mode of the AE sensor of the embodiment, (a) is an external perspective view showing the structure of an LM system including a moving block, and (b) is an internal perspective view. (C) is an external side view showing an example of a position when an AE sensor is installed in the LM system.
- FIG. 5 is a side view of the LM system including the moving block according to the embodiment.
- FIG. 6 is a diagram (II) showing an installation mode of the AE sensor according to the embodiment;
- (a) is a perspective view showing the structure of the LM system including the ball screw,
- (b) is an external side view showing an example of a position when an AE sensor is installed in the LM system.
- FIG. 7 is a flowchart illustrating an operation state detection process according to the embodiment.
- BEST MODE FOR CARRYING OUT THE INVENTION a preferred embodiment of the present invention will be described with reference to the drawings.
- a linear motion rolling guide device hereinafter simply referred to as a rolling guide device
- L M Linear Motion
- L M guide pole spline a linear motion system such as a so-called L M guide pole spline
- AE phenomenon which has been conventionally used for failure diagnosis of a rolling bearing device for rotation, in the operation of the LM system. It has been discovered that it can also be used to diagnose conditions.
- AE a phenomenon in which ⁇ energy is released and a sound wave (AE wave) is generated due to the destruction or deformation of a solid material” or “plastic deformation or cracking inside the material”
- ⁇ a phenomenon in which an elastic wave is generated along with the occurrence of deformation, etc.
- the inventor of the present invention has found that plastic deformation and cracks occur on the ball or guide surface.
- AE waves are generated only by collisions between poles caused by normal operation of the LM system. More specifically, in the case of an LM system using moving blocks, as shown in Fig. 1 (a), when the pole B revolves around the rolling path formed in the moving block C while rotating.
- the inventor of the present invention has discovered that the generation modes of the AE wave are different from each other depending on the type of the abnormal operation state described above.
- the electric signal corresponding to the extended AE wave has a higher frequency than the vibration generally generated when the LM system operates, for example, as shown in FIG. It is possible to detect this by separating it from the vibration by the method of envelope detection, and this makes it possible to detect its operating state in real time while the LM system is operating.
- FIG. 2 is a block diagram showing a schematic configuration of the condition diagnosis apparatus according to the embodiment
- FIG. 3 is a longitudinal sectional view showing a schematic configuration of an AE sensor for detecting an extended AE wave according to the embodiment
- 6 are diagrams for explaining an LM system to which the present invention is applied
- FIG. 7 is a flowchart showing a process of detecting an operation state executed in the state diagnosis device according to the embodiment.
- the condition diagnostic apparatus S includes an AE sensor 1, a waveform shaping unit 2 including a BPF (Band Pass Filter) 2A and an envelope detection unit 2B, and an A / D (Analog / Digital) Converter 3 and signal processing as periodicity judgment means, maximum value detection means, maximum value judgment means, state judgment means, event rate detection means, event rate judgment means, execution value detection means and execution value judgment means It comprises a unit 4 and a display unit 5 composed of a liquid crystal display or the like.
- BPF Band Pass Filter
- a / D Analog / Digital
- the AE sensor 1 is installed at an arbitrary place in the LM system to be diagnosed, for example, at the end of a rail or on a moving block as a moving member, and a contact part described later is provided with any one of the above-mentioned contact parts. It is arranged in contact with the place of. Then, the extended AE wave generated by the operation of the LM system is detected, converted into a detection signal Sae which is an analog signal, and output to the waveform shaping unit 2.
- the BPF 2 A in the waveform shaping section 2 removes frequency components other than the extended A E wave from the detection signal Sae and outputs the signal to the envelope detection section 2B.
- a pass frequency band for the detection signal Sae in the BPF 2A specifically, for example, a BPF that passes a frequency component of 100 kHz or more and 1 MHz or less may be used as the BPF 2A. desirable.
- the envelope detector 2B extracts the envelope component based on the detection signal S ae, generates an envelope signal Sw, and outputs the envelope signal Sw to the AD converter 3.
- the AD converter 3 digitizes the envelope signal Sw which is an analog signal, generates a digital envelope signal S dw, and outputs it to the signal processing unit 4.
- the signal processing unit 4 determines the current operation state of the LM system to be diagnosed based on the digital envelope signal S dw by an operation state detection process described later shown in FIG. 7, and a determination signal S indicating the result. Generate dp and output to display unit 5.
- the display unit 5 performs a display indicating the content based on the determination signal S dp. This display allows the user of the LM system to grasp the operation state.
- the AE sensor 1 has a cylindrical shape as a whole. Specifically, the AE sensor 1 includes a contact portion 10 arranged in contact with a rail LM or the like in the LM system.
- the detection signal S ae is conducted between the housing 11, the piezoelectric element 13 formed of a piezo element or the like, and the silver deposition films 12 and 14 formed on the upper and lower surfaces of the piezoelectric element 13. And an external line 15 to be output to the waveform shaping unit 2.
- FIG. 6 is a diagram showing an embodiment in which the AE sensor 1 is installed in an LM system in which a moving block is used as an LM system to be diagnosed.
- Fig. 6 shows a case where a so-called ball screw is used as the LM system to be diagnosed.
- FIG. 3 is a diagram showing an aspect in a case where an AE sensor 1 is installed in an LM system.
- the LM system shown in Figs. 4 (a) and (b) has a rail 20 formed with pole rolling grooves 20a and 20 for rolling a ball 22 described later along the longitudinal direction, and a large number of rails.
- a moving block 21 that is engaged with the rail 20 via the ball 22 and has an infinite circulation path for the ball 22 inside, and is provided on both front and rear end faces in the moving direction of the moving block 21.
- the movable block 21 is reciprocated on the rail 20 with the circulation of the pole 22 as it is mounted and the sealing member 23 is in close contact with the upper surface and both side surfaces of the rail 20. It is configured as follows.
- the rail 20 is formed in a substantially rectangular shape in cross section, and mounting holes 24 for allowing fixing bolts to pass therethrough are formed at appropriate intervals in the longitudinal direction. ing.
- two ball rolling grooves 20a are formed on the upper surface of the rail 20 so as to sandwich the mounting hole 24, while two ball rolling grooves 20b are formed on both sides.
- These four pole rolling grooves are formed in a deep groove shape with a curvature slightly larger than the curvature of the spherical surface of the ball 22.
- the moving block 21 includes a block body 26 having a mounting surface 25 for a movable body such as a table 30 described later, and a pair of end plates 2 fixed to both front and rear end faces of the block body 26.
- the track rail 20 is formed in a substantially saddle-shaped cross-section with a portion on the lower surface side where the upper part of the track rail 20 is loosely fitted.
- the block main body 26 is formed in a substantially saddle-shaped cross section including a base portion on which the mounting surface 25 is formed and a pair of skirt portions hanging from both ends of the base portion.
- load rolling grooves 28 facing the ball rolling grooves 20a and 20 of the rail 20 are formed on the inner surface of each skirt portion and the lower surface side of the base.
- the ball 22 rolls while applying a load between the load rolling groove 28 and the ball rolling grooves 20 a and 20 b of the rail 20, thereby moving the moving block 21. You will be moving on rail 20.
- ball return holes 29 corresponding to the load rolling grooves 28 are respectively formed in the base of the block body 26 and each scart portion.
- the pole return holes 29 are connected to the load rolling grooves 28 by a substantially U-shaped turning path (not shown) formed in the end plate 27. That is, in this direction changing path, the pole 22 having finished rolling in the load rolling groove 28 of the block main body 26 is scooped up and sent to the above-mentioned pole return hole 29. It is configured to send out the pole 22 to the rolling groove 28. Therefore, by fixing these end plates 27 to the block main body 26 using the mounting bolts 27a, an infinite circulation path of the pawl 22 is formed in the moving block 21.
- the table 30 When the AE sensor 1 according to the embodiment is installed in the LM system shown in FIGS. 4 (a) and 4 (b), for example, as shown in FIG.
- the table 30 When the table 30 is set on a plurality of moving blocks 21 linearly moving on the rail 0, the table 30 is set at a position outside the moving range of the moving block 21 on the track rail 20.
- the pole screw 40 has a spiral ball on the outer peripheral surface.
- a screw shaft 41 having a rolling groove 41a, a nut member 42 having a helical load rolling groove 42a opposed to the pole rolling groove 41a on the inner peripheral surface, and ball rolling A groove 4 1a and poles 4 3 rolling between the load rolling grooves 4 2a are provided.
- a load rolling path is formed between the pole rolling groove 41 a of the screw shaft 41 and the load rolling groove 42 a of the nut member 42.
- a return pipe 44 as two circulation parts is attached to the nut member 42.
- the V-turn pipe 44 connects one end and the other end of the load rolling path to form a no-load return path.
- the return pipe 44 is formed in a substantially gate shape, and has a central portion 44a and a pair of legs 44b, 44b provided on both sides of the central portion 44a.
- the pair of legs 4 4 b and 4 4 are inserted into the load rolling path at intervals of several pitches.
- the return pipe 44 is fixed to the nut member 42 by a connecting means such as a port 45.
- a pole rolling groove 41a having a substantially semicircular cross section provided with a constant spiral lead around the periphery thereof is formed by grinding or rolling.
- the nut member 42 has a substantially cylindrical shape, and has a flange 46 on its end face for attaching a pole screw 40 to a machine or the like.
- a load rolling groove 42a having a substantially semicircular cross section is formed to face the pole rolling groove 41a of the screw shaft 41.
- the nut member 42 has a flat portion 47 whose upper surface is partially flattened. In the flat portion 47, several return pipe fitting holes into which the legs 44b and 44b of the return pipe 44 are inserted are formed.
- the table 49 When the table 51 is fixed via a bracket 50 to a ball screw 40 whose rotatably supported screw shaft 41 is rotated by a motor 48, the above-mentioned flange of the ball screw 40 is provided. It is installed on the plane perpendicular to the central axis of the ball screw 40, 46.
- FIG. 7 As shown in FIG. 7, when performing the operation state detection processing according to the embodiment while the LM system to be diagnosed is operating, first, necessary initial setting processing and the like are performed, and then the AE sensor In step 1, an extended AE wave generated due to the extended AE phenomenon occurring during the operation of the LM system is detected (step S1), and the corresponding detection signal S ae is waveform-shaped in the waveform shaping unit 2 (step S1). S 2), generates the above-mentioned envelope signal Sw, and outputs it as a digital envelope signal S dw to the signal processing unit 4 via the A / D converter 3.
- step S 1 the process of detecting the extended AE wave (step S 1) and the waveform shaping process (step S 2) are repeated for a required inspection time, and the value (data) of the digital envelope signal S dw is processed.
- the data is stored in a memory (not shown) in the unit 4 (step S3), and based on the stored data, parameters used for each judgment described later are calculated and stored in the memory (step S4).
- the parameter include the presence or absence of periodicity in the value of the digital envelope signal S dw, the moving distance in one direction in the reciprocating motion of the moving block included in the LM system to be diagnosed, and the Four parameters are used: the maximum value of the digital envelope signal S dw within the detection period set in advance according to the moving speed, the effective value during the detection period, and the event rate during the detection period.
- the periodicity in the value of the digital envelope signal S dw is the frequency at which the contact with the rail surface and the detachment from the rail surface are repeated when the ball revolves with the operation of the LM system. This is detected by an analysis method, and is unique when detecting the operating state of an LM system.
- the effective value is obtained by averaging the value of the digital envelope signal S dw for the detection period.
- the event rate is determined by setting the value of the digital envelope signal S dw in advance. This is a parameter indicating how many times the number of times equal to or greater than the threshold value has occurred within the one detection period.
- the signal processing unit 4 next determines whether or not the value of the digital envelope signal S dw has periodicity based on a preset frequency analysis value. A judgment is made (step S5).
- step S5 If no periodicity is detected in the determination in step S5 (step S5; NO), the effective value in the digital envelope signal Sdw is called from the memory (step S6).
- Step S7 it is determined whether or not the called effective value is equal to or greater than an effective value threshold which is a threshold experimentally set in advance in order to determine whether a foreign substance has entered or is operating normally.
- step S7 if the called effective value is less than the effective value threshold (step S7; NO), the LM system to be diagnosed operates normally now. Is determined (step S8), the fact is displayed on the display unit 5 (step S10), and the continuous operation state detection processing ends.
- step S7 if the called effective value is equal to or greater than the effective value threshold (step S7; YE S), foreign matter is presently mixed in the LM system to be diagnosed. (Step S 9), and the fact is displayed on the display unit 5 (Step S 10).
- step S5 when the periodicity is detected in the judgment of step S5 (step S5; YES), the maximum value of the digital envelope signal S dw is called from the memory (step S11).
- the called maximum value is experimentally determined in advance to determine whether lubrication failure is actually occurring. It is determined whether or not the value is equal to or greater than the set threshold value, that is, the maximum threshold value (step S12).
- step S12 If the called maximum value is equal to or greater than the maximum threshold value (step S12; YES), it is determined that lubrication failure is currently occurring in the LM system to be diagnosed (step S12). S 13), the display unit 5 is used to display the indication (step S 10), and the operation state detection process is terminated.
- step S12 if the called maximum value is smaller than the above-mentioned maximum threshold value (step S12; NO), then, the event rate in the digital envelope signal S dw is calculated as follows. It is called from the above memory (step S14).
- the called event rate is an event rate threshold which is a threshold set experimentally in advance to determine whether flaking has occurred or there is a possibility of lubrication failure in the LM system to be diagnosed. It is determined whether or not this is the case (step S15).
- step S15 if the called event rate is less than the above event rate threshold (step S15; NO), the lubrication failure is currently detected in the LM system to be diagnosed. It is determined that there is a high possibility of occurrence (Step S17), and the fact is displayed on the display unit 5 (Step S10).
- the degree of poor lubrication determined in step S17 is different from the degree of poor lubrication determined in step S13 described above.
- the former in the case of step S17
- it can be determined only as a possibility of occurrence of a defect, while the latter (in the case of step S13) can be determined with certainty that lubrication failure has actually occurred.
- step S15 the If the event rate is equal to or higher than the threshold (step S15; YES), it is determined that flaking is currently occurring in the LM system to be diagnosed (step S16), and the display unit 5 is used. Display that effect (Step S 1
- the detection results of the above-mentioned series of operation states are displayed and accumulated in the above-mentioned memory in the signal processing unit 4 and statistically processed, thereby detecting deterioration of the operation states and occurrence of a failure. Can be prevented beforehand.
- the extended AE wave generated by the operation of the LM system is detected to detect the current operation state of the LM system.
- the operating state of the LM system can be detected in real time without disassembling the LM system and eliminating the influence of vibration caused by the operation.
- the LM system When the generated digital envelope signal S dw has periodicity and the maximum value in the digital envelope signal S dw is equal to or larger than the maximum value threshold, the LM system is currently in a lubrication failure state. Therefore, the occurrence of poor lubrication in the LM system can be easily and accurately detected in real time during operation.
- the generated digital envelope signal S dw has periodicity, and the maximum value in the digital envelope signal S is less than a maximum value threshold, and the event rate in the digital envelope signal S dw Is below the event rate threshold, the LM system may be in poor lubrication Since it is determined that there is a lubrication condition, the possibility of occurrence of a lubrication failure state in the LM system can be simply and accurately detected in real time during operation.
- the generated digital envelope signal S dw has periodicity, and the maximum value in the digital envelope signal S dw is less than a maximum value threshold, and the digital envelope signal S dw
- the event rate threshold it is determined that flaking has occurred in the LM system, and that fact is notified, so that the occurrence of flaking in the LM system can be detected in real time during its operation. Simple and accurate detection is possible.
- the generated digital envelope signal S dw has no periodicity and the effective value of the digital envelope signal S dw is equal to or larger than the effective value threshold, it is determined that a foreign substance has entered the LM system. Therefore, the occurrence of foreign matter in the LM system can be easily and accurately detected in real time during operation.
- the generated digital envelope signal S dw has no periodicity and the effective value of the digital envelope signal S dw is less than the effective value threshold, the current operation state of the LM system is normal.
- the fact is notified and it is possible to easily and accurately detect in real time whether or not the operation state of the digital envelope signal S dw is normal during the operation.
- the program corresponding to the flowchart shown in FIG. 7 is recorded on an information recording medium such as a flexible disk or a hard disk, or acquired and recorded via a network such as the Internet.
- the microcomputer can function as the signal processing unit 4 of the embodiment. Both are possible.
- the AE sensor 1, the waveform shaping unit 2 and the A / D converter 3 are constituted by devices external to the microcomputer.
- the state detection device S having the configuration illustrated in FIG. 2 is configured as one device.
- the state diagnosis device S is used as a diagnosis target. This method is applied to the case where an LM system is installed and used at a factory where the LM system is used and the operating state of the LM system is detected and diagnosed. .
- the state detection device S of the embodiment is provided with the state diagnosis device S in a factory or the like where the LM system to be diagnosed is installed / used at a factory or the like, and the state diagnosis device S is connected to a telephone line. It can also be applied to the case where the diagnostic state of the LM system is detected and diagnosed by remotely operating the diagnostician from a remote location, for example.
- condition diagnostic device S is always provided at a factory or the like where the LM system to be diagnosed is installed and used, and the condition diagnostic device S automatically detects the operating state of the LM system to be diagnosed and performs the detection.
- the present invention can also be applied to a case where a diagnosis is performed, the detection result is transmitted to another location in parallel with the diagnosis, and the accumulated fault diagnosis is performed based on the stored detection result. .
- the state detection device S is configured by using the waveform shaping unit 2, the AD converter 3, the signal processing unit 4 and the display unit 5 with respect to one AE sensor 1 respectively.
- the detection signals S ae from the plurality of AE sensors 1 are input to one waveform shaping unit 2 via the switching circuit, and the detection signals S ae from the plurality of AE sensors 1 are output to the respective ones.
- a waveform shaping unit 2, an AD converter 3, a signal processing unit 4 and a display unit 5 for processing.
- the execution timing of the detection process using the waveform shaping unit 2, the AD converter 3, the signal processing unit 4, and the display unit 5 It is necessary to synchronize the timing with the timing of capturing the detection signal S ae from the corresponding AE sensor 1.
- the above-mentioned frequency analysis value, the above-mentioned effective value threshold, the above-mentioned maximum value threshold, and the above-mentioned event rate threshold which are the criteria for determination in steps S5, S7, S12 and S15 in the flowchart shown in FIG. A specific example is shown below.
- the model SNS55-LR model manufactured by the applicant is used as the LM guide on which the AE sensor 1 is installed, and the external weight for the moving block is 0.1 C (1 4 kN), the stroke, which is the moving distance of the moving block, is 25 Omm, the moving speed is 24 m / min, and DTE26 type lubricant manufactured by Mobile Oil Co., Ltd. is intermittently measured as a lubricant.
- the sample rate for the detection signal S ae is set to 10 kilohertz, and the measurement time is measured as 0.4 seconds.
- a squared voltage value obtained by performing an FFT on the digital envelope signal Sdw and performing a frequency analysis (power spectrum) is one. If it exceeds 0 X 10-9 (V2), it is determined that there is periodicity. If it does not exceed this value, it is determined that there is no periodicity.
- 1.0 ⁇ 10-4 (V) is appropriate as the effective value in the digital envelope signal Sdw.
- the linear motion rolling plan detects the above-mentioned wave generated sexually by the operation of the device and detects the current operating state of the linear motion rolling guide device. Therefore, during the operation of the linear motion rolling guide device, the operation state of the linear motion rolling guide device can be changed between actual times without disassembling the linear motion rolling guide device and eliminating the influence of vibration caused by the operation. It can be detected.
- the generated detection signal has periodicity, and the maximum value in the detection signal is less than the maximum value threshold, and
- the linear motion rolling guide device is determined to be in a state of lubrication failure and is notified to that effect. To Possibility of occurrence of poor lubrication state can be easily and accurately detected in real time during operation.
- the generated detection signal has periodicity, and the maximum value in the detection signal is less than the maximum value threshold value; Also, when the event rate in the detection signal is equal to or greater than the event rate threshold, the linear motion rolling guide device determines that flaking has occurred, and notifies the fact that the flaking has occurred. The occurrence of flaking can be detected simply and accurately in real time during operation.
- the generated detection signal has no periodicity, and the effective value of the detection signal is equal to or more than the effective value threshold value At this time, it is determined that foreign matter has entered the linear motion rolling guide device, and a notification to that effect is made.Therefore, the occurrence of foreign matter in the linear motion rolling guide device can be detected simply and accurately in real time during operation. can do.
- the linear motion rolling device since the wave motion generated elastically by the operation of the linear motion rolling guide device is detected to detect the current operation state of the linear motion rolling guide device, the linear motion rolling device is detected.
- the operation state can be detected in real time without disassembling the linear motion rolling guide device, eliminating the influence of vibration caused by the operation. Therefore, it is possible to predict the occurrence of a failure in the linear motion rolling guide device, thereby improving the maintainability of the linear motion rolling guide device user, and prolonging the service life of the linear motion rolling guide device and manufacturing the linear motion rolling guide device. It can also contribute to the improvement of the quality of the equipment or equipment used.
- the generated detection signal has periodicity, and the maximum value in the detection signal is equal to or larger than the maximum value threshold value At this time, it is determined that the linear motion rolling guide device is in a lubrication failure state, and a notification to that effect is made. Therefore, the occurrence of a lubrication failure state in the linear motion rolling guide device can be easily and simply determined in real time during operation. It can be detected accurately.
- the generated detection signal has periodicity, and the maximum value of the detection signal is less than the maximum value threshold, and
- the event rate in the detection signal is smaller than the event rate threshold, the linear motion rolling guide device is determined to be in a state of lubrication failure and is notified to that effect.
- the possibility of poor lubrication can be easily and accurately detected in real time during operation.
- the generated detection signal has periodicity, and the maximum value in the detection signal is smaller than the maximum value threshold. Yes, and when the event rate in the detection signal is equal to or greater than the event rate threshold, the linear motion rolling guide device determines that flaking has occurred and notifies that fact. The occurrence of flaking can be easily and accurately detected in real time during operation.
- the generated detection signal has no periodicity, and If the effective value is greater than or equal to the effective value threshold, it is determined that foreign matter has entered the linear motion rolling guide device and a notification to that effect is made. It can be easily and accurately detected in real time.
- the generated detection signal has no periodicity, and the effective value of the detection signal is less than the effective value threshold. , It is determined that the current operation state of the linear motion rolling guide device is normal, and the fact is notified.Therefore, it is determined whether or not the operation state of the linear motion rolling guide device is normal during the operation. It can be easily and accurately detected in real time.
- the wave motion generated elastically by the operation of the linear motion rolling guide device is detected, and the linear motion rolling is detected. Since the computer functions so as to detect the current operating state of the guide device, the linear motion rolling guide device can be operated in real time without disassembling the linear motion rolling guide device while the linear motion rolling guide device is operating. The operation state can be detected while eliminating the influence of vibration caused by operation.
- the state detection program described in claim 13 since the state detection program described in claim 13 is recorded so as to be readable by a computer, the state detection program is read out and executed by a computer.
- the computer detects the wave generated elastically by the operation of the linear motion rolling guide device and detects the current operation state of the linear motion rolling guide device. Function, the operating state of the linear motion rolling guide device can be detected in real time without disassembling the linear motion rolling guide device, eliminating the effects of vibrations caused by the operation. can do.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Rolling Contact Bearings (AREA)
- Transmission Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
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Abstract
Description
Claims
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AT04715466T ATE522734T1 (de) | 2003-02-28 | 2004-02-27 | Zustandserfassungsvorrichtung, -verfahren und - programm sowie datenaufzeichnungsmedium |
EP20040715466 EP1598569B1 (en) | 2003-02-28 | 2004-02-27 | Condition-detecting device, method, and program, and information-recording medium |
US10/547,356 US7555953B2 (en) | 2003-02-28 | 2004-02-27 | Condition-detecting device, method, and program, and information-recording medium |
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JP2003054293A JP4430316B2 (ja) | 2003-02-28 | 2003-02-28 | 状態検出装置及び状態検出方法並びに状態検出用プログラム及び情報記録媒体 |
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Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101432611B (zh) | 2006-02-28 | 2011-04-20 | Thk株式会社 | 状态检测装置及状态检测方法以及状态检测用程序及信息记录介质 |
DE102006010847A1 (de) * | 2006-03-09 | 2007-09-13 | Schaeffler Kg | Verfahren zum Untersuchen von Lagerschäden |
DK2115323T3 (da) * | 2006-12-31 | 2012-05-07 | Linak As | Aktuatorsystem |
DE102007038890B4 (de) | 2007-08-17 | 2016-09-15 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Bestimmung der Lebensdauer von im Arbeitsbetrieb befindlichen Bauteilen |
ES2456047T3 (es) * | 2008-07-24 | 2014-04-21 | Siemens Aktiengesellschaft | Procedimiento y configuración para determinar el estado de un rodamiento |
US20100063775A1 (en) * | 2008-09-11 | 2010-03-11 | Assembly & Test Worldwide, Inc. | Method and apparatus for testing automotive components |
US20100063674A1 (en) * | 2008-09-11 | 2010-03-11 | Assembly & Test Worldwide, Inc. | Engine test method using structured test protocol |
KR101165078B1 (ko) * | 2009-06-30 | 2012-07-12 | 주식회사 우신산업 | 프레스 공정 고장진단장치 및 그 방법 |
DE102010015207A1 (de) * | 2010-04-16 | 2011-10-20 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zur Überwachung einer Linearführung |
JP2012042338A (ja) * | 2010-08-19 | 2012-03-01 | Ntn Corp | 転がり軸受の異常診断装置および歯車の異常診断装置 |
US8695405B2 (en) * | 2010-09-17 | 2014-04-15 | Bestsens Ag | Bearing, arrangement for determining properties of a lubricant in a bearing and method for determining properties of a lubricant in a bearing |
CN102554675A (zh) * | 2010-12-08 | 2012-07-11 | 孙长顺 | 调速滑块 |
DE102013214031B4 (de) | 2013-07-17 | 2023-08-03 | Ifm Electronic Gmbh | Kugelumlaufspindel-Antrieb mit Zustandsüberwachungseinheit, Verfahren zur Zustandserkennung einer Spindel eines Kugelumlaufspindel-Antriebs und Zustandsüberwachungseinheit für einen Kugelumlaufspindel-Antrieb |
GB2521359A (en) * | 2013-12-17 | 2015-06-24 | Skf Ab | Viscosity estimation from demodulated acoustic emission |
KR101655214B1 (ko) | 2014-10-02 | 2016-09-07 | 현대자동차 주식회사 | 프레스 판넬의 결함 검출 장치 및 그 방법 |
CN104483121B (zh) * | 2014-12-24 | 2017-02-01 | 重庆大学 | 往复式机械位置序列采样和诊断方法 |
DE102015000207A1 (de) * | 2015-01-15 | 2016-07-21 | Hella Kgaa Hueck & Co. | Verfahren und Vorrichtung zur Erfassung eines Körperschallsignals, insbesondere zur Erfassung eines von einem Schadensereignis an einem zu überwachenden Bauteil ausgelösten Körperschallsignals |
DE102015201121A1 (de) | 2015-01-23 | 2016-07-28 | Robert Bosch Gmbh | Schadenszustandsermittlung bei einer Linearbewegungsvorrichtung |
DE102015202130A1 (de) * | 2015-02-06 | 2016-08-11 | Schaeffler Technologies AG & Co. KG | Baukasten für Lager und Lageranordnung |
CN104819846B (zh) * | 2015-04-10 | 2017-03-22 | 北京航空航天大学 | 一种基于短时傅里叶变换和稀疏层叠自动编码器的滚动轴承声音信号故障诊断方法 |
DE102016100835A1 (de) * | 2016-01-19 | 2017-07-20 | Hiwin Technologies Corp. | Aufbau einer Sensorik |
DE102016210109A1 (de) * | 2016-06-08 | 2017-12-14 | Robert Bosch Gmbh | Führungswagen mit sensorischer Schicht an der Laufbahneinlage |
CN106053074B (zh) * | 2016-08-02 | 2019-12-20 | 北京航空航天大学 | 一种基于stft和转动惯量熵的滚动轴承声音信号故障特征提取方法 |
JP6403743B2 (ja) * | 2016-11-21 | 2018-10-10 | Thk株式会社 | 転がり案内装置の状態診断システム |
JP6952465B2 (ja) * | 2016-12-28 | 2021-10-20 | Thk株式会社 | 管理システム、及び運動案内装置 |
JP6841558B2 (ja) * | 2017-02-24 | 2021-03-10 | Thk株式会社 | 転がり案内装置の状態診断システム及び状態診断方法 |
JP6673306B2 (ja) * | 2017-03-03 | 2020-03-25 | 株式会社デンソー | 診断システム |
WO2019044493A1 (ja) | 2017-08-29 | 2019-03-07 | Thk株式会社 | 運動案内装置 |
JP7219877B2 (ja) * | 2017-08-29 | 2023-02-09 | Thk株式会社 | 運動案内装置 |
CZ2019112A3 (cs) * | 2019-02-26 | 2020-03-11 | Ĺ KODA AUTO a.s. | Lineární valivé vedení s integrovaným diagnostickým zařízením |
DE102020116624A1 (de) | 2020-06-24 | 2021-12-30 | Ifm Electronic Gmbh | Überwachungseinrichtung für eine Wälzführung |
CN113092115B (zh) * | 2021-04-09 | 2022-10-11 | 重庆大学 | 数模联合驱动的全寿命滚动轴承数字孪生模型构建方法 |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55138616A (en) * | 1979-04-16 | 1980-10-29 | Kansai Electric Power Co Inc:The | Bearing fault discriminating device |
JPS57194331A (en) * | 1981-05-26 | 1982-11-29 | Nippon Seiko Kk | Method and device for detecting fault of machine element having tumbling body |
JPS5863831A (ja) * | 1981-10-13 | 1983-04-15 | Sumitomo Metal Ind Ltd | 周期運動体の監視方法 |
JPS5863832A (ja) * | 1981-10-13 | 1983-04-15 | Sumitomo Metal Ind Ltd | 周期運動体の監視方法 |
JPS62133023U (ja) * | 1986-02-17 | 1987-08-21 | ||
JPS63297813A (ja) * | 1987-05-28 | 1988-12-05 | Fuji Electric Co Ltd | ころがり軸受異常診断装置 |
JPH01172621A (ja) * | 1987-12-26 | 1989-07-07 | Tosoh Corp | 転がり軸受けの異常検出方法 |
JPH01172622A (ja) * | 1987-12-26 | 1989-07-07 | Tosoh Corp | 転がり軸受けの異常検出方法 |
JPH09210860A (ja) * | 1996-02-05 | 1997-08-15 | Hitachi Building Syst Co Ltd | アコースティック・エミッションを用いた回転機軸受診断装置 |
JP2002022617A (ja) * | 2000-07-05 | 2002-01-23 | Mitsubishi Electric Corp | 軸受診断装置 |
JP2002340922A (ja) * | 2001-01-25 | 2002-11-27 | Nsk Ltd | 車輪用回転検出装置 |
JP2003056574A (ja) * | 2001-08-20 | 2003-02-26 | Koyo Seiko Co Ltd | 固体潤滑軸受装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6219755A (ja) * | 1985-07-19 | 1987-01-28 | Hitachi Ltd | Ae方式回転機異常診断システム |
JPH066761B2 (ja) | 1985-12-03 | 1994-01-26 | 株式会社日立製作所 | ジルコニウム製造用ハ−ス及びその製造方法 |
US5140858A (en) * | 1986-05-30 | 1992-08-25 | Koyo Seiko Co. Ltd. | Method for predicting destruction of a bearing utilizing a rolling-fatigue-related frequency range of AE signals |
US4763523A (en) * | 1987-08-26 | 1988-08-16 | Womble Coy G | Roller bearing testing device |
GB8826640D0 (en) * | 1988-11-15 | 1988-12-21 | Sensotect Ltd | Apparatus for determining surface roughness of material |
GB2228088B (en) * | 1988-12-16 | 1992-09-16 | Nippon Seiko Kk | Method and apparatus for detecting cracks in bearings |
US5477730A (en) * | 1993-09-07 | 1995-12-26 | Carter; Duncan L. | Rolling element bearing condition testing method and apparatus |
JPH07217649A (ja) * | 1994-02-04 | 1995-08-15 | Nippon Seiko Kk | 複列転がり軸受の予圧隙間を測定する方法と装置 |
JP2557201B2 (ja) * | 1994-09-07 | 1996-11-27 | インターナショナル・ビジネス・マシーンズ・コーポレイション | 回転装置の検査装置及び回転装置の検査方法 |
JPH11271181A (ja) * | 1998-01-22 | 1999-10-05 | Nippon Steel Corp | ころがり軸受の異常診断方法および装置 |
US6170986B1 (en) * | 1999-04-07 | 2001-01-09 | Chieftech Precision Co., Ltd. | Linear motion rolling guide device |
GB0307312D0 (en) * | 2003-03-28 | 2003-05-07 | Univ Brunel | Acoustic emission parameters based on inter-arrival times of acoustic emission events |
US7182519B2 (en) * | 2004-06-24 | 2007-02-27 | General Electric Company | Methods and apparatus for assembling a bearing assembly |
JP4771334B2 (ja) * | 2004-08-31 | 2011-09-14 | Thk株式会社 | 状態検出装置及び状態検出方法並びに状態検出用プログラム及び情報記録媒体、状態表示装置及び状態表示方法並びに状態表示用プログラム及び情報記録媒体 |
US7458267B2 (en) * | 2004-11-17 | 2008-12-02 | Halliburton Energy Services, Inc. | Acoustic emission inspection of coiled tubing |
-
2003
- 2003-02-28 JP JP2003054293A patent/JP4430316B2/ja not_active Expired - Lifetime
-
2004
- 2004-02-26 TW TW93104897A patent/TW200427975A/zh not_active IP Right Cessation
- 2004-02-27 KR KR1020057015893A patent/KR100993048B1/ko active IP Right Grant
- 2004-02-27 CN CNB200480005548XA patent/CN100458394C/zh not_active Expired - Lifetime
- 2004-02-27 AT AT04715466T patent/ATE522734T1/de not_active IP Right Cessation
- 2004-02-27 EP EP20040715466 patent/EP1598569B1/en not_active Expired - Lifetime
- 2004-02-27 US US10/547,356 patent/US7555953B2/en active Active
- 2004-02-27 WO PCT/JP2004/002398 patent/WO2004076874A1/ja active Application Filing
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55138616A (en) * | 1979-04-16 | 1980-10-29 | Kansai Electric Power Co Inc:The | Bearing fault discriminating device |
JPS57194331A (en) * | 1981-05-26 | 1982-11-29 | Nippon Seiko Kk | Method and device for detecting fault of machine element having tumbling body |
JPS5863831A (ja) * | 1981-10-13 | 1983-04-15 | Sumitomo Metal Ind Ltd | 周期運動体の監視方法 |
JPS5863832A (ja) * | 1981-10-13 | 1983-04-15 | Sumitomo Metal Ind Ltd | 周期運動体の監視方法 |
JPS62133023U (ja) * | 1986-02-17 | 1987-08-21 | ||
JPS63297813A (ja) * | 1987-05-28 | 1988-12-05 | Fuji Electric Co Ltd | ころがり軸受異常診断装置 |
JPH01172621A (ja) * | 1987-12-26 | 1989-07-07 | Tosoh Corp | 転がり軸受けの異常検出方法 |
JPH01172622A (ja) * | 1987-12-26 | 1989-07-07 | Tosoh Corp | 転がり軸受けの異常検出方法 |
JPH09210860A (ja) * | 1996-02-05 | 1997-08-15 | Hitachi Building Syst Co Ltd | アコースティック・エミッションを用いた回転機軸受診断装置 |
JP2002022617A (ja) * | 2000-07-05 | 2002-01-23 | Mitsubishi Electric Corp | 軸受診断装置 |
JP2002340922A (ja) * | 2001-01-25 | 2002-11-27 | Nsk Ltd | 車輪用回転検出装置 |
JP2003056574A (ja) * | 2001-08-20 | 2003-02-26 | Koyo Seiko Co Ltd | 固体潤滑軸受装置 |
Also Published As
Publication number | Publication date |
---|---|
CN100458394C (zh) | 2009-02-04 |
EP1598569A4 (en) | 2010-08-11 |
JP2004263775A (ja) | 2004-09-24 |
CN1756910A (zh) | 2006-04-05 |
KR20050107461A (ko) | 2005-11-11 |
KR100993048B1 (ko) | 2010-11-08 |
TW200427975A (en) | 2004-12-16 |
ATE522734T1 (de) | 2011-09-15 |
US7555953B2 (en) | 2009-07-07 |
EP1598569B1 (en) | 2011-08-31 |
EP1598569A1 (en) | 2005-11-23 |
JP4430316B2 (ja) | 2010-03-10 |
US20060213272A1 (en) | 2006-09-28 |
TWI329735B (ja) | 2010-09-01 |
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