CN203572803U - Grinding burn detecting device for bearing ring based on Barkhausen effect - Google Patents
Grinding burn detecting device for bearing ring based on Barkhausen effect Download PDFInfo
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- CN203572803U CN203572803U CN201320811329.7U CN201320811329U CN203572803U CN 203572803 U CN203572803 U CN 203572803U CN 201320811329 U CN201320811329 U CN 201320811329U CN 203572803 U CN203572803 U CN 203572803U
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Abstract
The utility model relates to a grinding burn detecting device for a bearing ring based on a Barkhausen effect and belongs to the technical field of burn detection for the bearing ring. The utility model aims to solve the problem that the present burn detecting technique for the bearing ring is only fit for sampling detection because of the destructive effect thereof. A detecting coil is wound on the outer surface of a cylinder of an I-shaped framework; a magnetic bar is embedded in a hollow structure of the I-shaped framework; an exciting coil is wound on a horizontal section of a U-shaped framework; the I-shaped framework is arranged in an opening side of the U-shaped framework; a driving signal outputted by a sine-wave generator is sent to a power amplifier and then to the exciting coil; a noise detecting signal of the detecting coil is sent to a noise signal first-level amplifying circuit, a high-pass filter, a low-pass filter and a noise signal second-level amplifying circuit and then is inputted to a detector. The grinding burn detecting device for the bearing ring based on the Barkhausen effect is used for detecting the grinding burn of the bearing ring.
Description
Technical field
The utility model relates to the bearing ring grinding burn pick-up unit based on barkhausen, belongs to the burn detection technique field of bearing ring.
Background technology
Bearing is as the key foundation parts of matching equipment, relate to fundamental research and the cross disciplines such as contact mechanics, tribology, lubrication theory, fatigue and destruction, thermal treatment and material structure, its technical merit and product quality are to equipment performance and quality important.According to statistics, in rotating machinery, there is 30% mechanical fault because bearing causes.In precision optical machinery, higher to the requirement of bearing, micron order defect on raceway, all can affect the performance of whole system.
Why bearing becomes the weakness of equipment manufacture, and key is some bearing industry manufacturing process and equipment technology slower development.Bearing detects the important ring as production link, utilize the production testing equipment that high precision, high-level efficiency, specialization and automaticity are high, can effectively improve technological level and the equipment automatization level of Production of bearing, to guaranteeing that properties of product, quality and precision have vital role.
Grinding burn is a kind of surface imperfection that bearing ring grinding process often occurs, can have a strong impact on bearing usability and life-span.Burn detects last ring as bearing ring processing, need to utilize multiple detection method and means identified surface Burn defect.By the rejecting part of burning, avoid rejected part to flow into assembling link, to guarantee precision bearing quality.The burn detection method such as the current conventional acid-hatching of young eggs, metallographic structure analysis method and means, belong to destructive and detect, and can only be applicable to sampling Detection.In order to guarantee precision bearing performance, precision and life-span, need to carry out whole burns to bearing sleeve and detect.
Barkhausen (The Barkhausen effect) through research for many years, develops into now a Dynamic Non-Destruction Measurement after within 1919, being found first.Dynamic Non-Destruction Measurement based on this effect is the variation that has caused magnetic signal (Magnetic Barkhausen noise, abbreviation MBN) that utilizes the abnormal or defect of material internal structure, carrys out decision structure extremely and the extent of injury of defect.This technology is mainly used in evaluating quality and the fatigue conditions of ferromagnetic material, have harmless, quantitative, standardization, reliably, fast and automatically, objective, penetrable coating, can carry out the advantages such as large area detection, and environmental protection, human body is not injured, in industries such as machine-building, metallurgy, building, aeronautics and space, nuclear energy, traffic, and the field such as geologic prospecting, safety detection, material science has significant application value, therefore the research of the Dynamic Non-Destruction Measurement based on barkhausen has in recent years become domestic and international researchist's the focus of attention.
Summary of the invention
The utility model object be burn detection technique in order to solve existing bearing ring owing to thering is destructiveness, and be only suitable for the problem of sampling Detection, a kind of bearing ring grinding burn pick-up unit based on barkhausen is provided.
Bearing ring grinding burn pick-up unit based on barkhausen described in the utility model, it comprises Barkhausen noise sensor, power amplifier, sine-wave generator, noise signal one-level amplifying circuit, Hi-pass filter, low-pass filter, noise signal second amplifying circuit and wave detector
Barkhausen noise sensor comprises work type skeleton, magnetic test coil, U-shaped skeleton, drive coil and bar magnet;
Work type skeleton is comprised of upper anchor ring, lower anchor ring and cylinder, cylinder is connected between anchor ring and lower anchor ring, the axis coinciding of upper anchor ring, lower anchor ring and cylinder, and internal diameter is identical, bar magnet embeds in the hollow structure forming at upper anchor ring, lower anchor ring and cylinder, on the cylinder outer surface of work type skeleton, is wound around magnetic test coil; On the horizontal segment of U-shaped skeleton, be wound around drive coil, work type skeleton is arranged in the open side of U-shaped skeleton, and places between two parties, and the cylinder of work type skeleton is axially perpendicular to the horizontal segment place plane of U-shaped skeleton;
The driving signal output part of sine-wave generator connects the driving signal input of power amplifier, and the driving signal of power amplifier output is used for driving drive coil;
The noise detecting signal of magnetic test coil is received by noise signal one-level amplifying circuit, the one-level amplifying signal output terminal of noise signal one-level amplifying circuit connects the filtering signal input end of Hi-pass filter, the filtering signal output terminal of Hi-pass filter connects the filtering signal input end of low-pass filter, the filtering signal output terminal of low-pass filter connects the amplifying signal input end of noise signal second amplifying circuit, the noise signal input end of the amplifying signal output terminal tie geophone of noise signal second amplifying circuit.
Described magnetic test coil and drive coil are copper core enamel wire coil.
Work type skeleton is plastic skeleton.
Advantage of the present utility model: in the utility model, designed, designed Barkhausen noise sensor the noise signal of bearing ring is detected, it can realize the contactless Non-Destructive Testing to bearing ring, can be applied on a large scale the complete detection of bearing ring, have harmless, quantitative, standardization, reliably, fast and automatically, objective, penetrable coating, can carry out the advantages such as large area detection, meanwhile, this pick-up unit has the advantage of environmental protection, and human body is not injured.
The utility model can be used for the contactless harmless continuous detecting of bearing ring, collection that can be real-time also shows the noise signal of bearing ring, and then the grinding burn degree of acquisition bearing ring, easy to use, the performance, quality and the precision that guarantee bearing ring are had to vital role.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the bearing ring grinding burn pick-up unit based on barkhausen described in the utility model.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, bearing ring grinding burn pick-up unit based on barkhausen described in present embodiment, it comprises Barkhausen noise sensor 1, power amplifier 2, sine-wave generator 3, noise signal one-level amplifying circuit 4, Hi-pass filter 5, low-pass filter 6, noise signal second amplifying circuit 7 and wave detector 8
Barkhausen noise sensor 1 comprises work type skeleton 1-1, magnetic test coil 1-2, U-shaped skeleton 1-3, drive coil 1-4 and bar magnet 1-5;
Work type skeleton 1-1 is comprised of upper anchor ring, lower anchor ring and cylinder, cylinder is connected between anchor ring and lower anchor ring, the axis coinciding of upper anchor ring, lower anchor ring and cylinder, and internal diameter is identical, bar magnet 1-5 embeds in the hollow structure forming at upper anchor ring, lower anchor ring and cylinder, on the cylinder outer surface of work type skeleton 1-1, is wound around magnetic test coil 1-2; On the horizontal segment of U-shaped skeleton 1-3, be wound around drive coil 1-4, work type skeleton 1-1 is arranged in the open side of U-shaped skeleton 1-3, and places between two parties, and the cylinder of work type skeleton 1-1 is axially perpendicular to the horizontal segment place plane of U-shaped skeleton 1-3;
The driving signal output part of sine-wave generator 3 connects the driving signal input of power amplifier 2, and the driving signal that power amplifier 2 is exported is for driving drive coil 1-4;
The noise detecting signal of magnetic test coil 1-2 is received by noise signal one-level amplifying circuit 4, the one-level amplifying signal output terminal of noise signal one-level amplifying circuit 4 connects the filtering signal input end of Hi-pass filter 5, the filtering signal output terminal of Hi-pass filter 5 connects the filtering signal input end of low-pass filter 6, the filtering signal output terminal of low-pass filter 6 connects the amplifying signal input end of noise signal second amplifying circuit 7, the noise signal input end of the amplifying signal output terminal tie geophone 8 of noise signal second amplifying circuit 7.
In use, by non-contacting Barkhausen noise sensor 1 place that approaches that is arranged at measured bearing lasso 9, the axis of symmetry of its work type skeleton 1-1 is through the place, axle center of measured bearing lasso 9 for described pick-up unit.Bar magnet 1-5 and U-shaped skeleton 1-3 adopt ZnMn oxysome to make, and bar magnet 1-5 is embedded in work type skeleton 1-1, and work type skeleton 1-1 is fixed on the center of U-shaped skeleton 1-3.Sine-wave generator 3 produces sinusoidal wave, because this sine wave can not give Barkhausen noise sensor 1 enough drive currents, therefore adopts power amplifier 2 offset of sinusoidal ripple signals to amplify, then passes to drive coil 1-4.The alternating magnetic field that drive coil 1-4 produces, through U-shaped skeleton 1-3 conduction, magnetization measured bearing lasso 9.Measured bearing lasso 9 is excited, and outwards launches magnetoelastic wave, and magnetic test coil 1-2 changes into analog electrical signal by the field signal receiving.Because this analog electrical signal is fainter, be generally μ V level, need one-level amplifying circuit and second amplifying circuit to amplify.The signal that magnetic test coil 1-2 receives mainly concentrates on 1KHz-2MHz, generally abundanter in 1KHz-500KHz section, therefore adopt Hi-pass filter 5 and low-pass filter 6 gatings.After wave detector 8, obtain the Barkhausen noise signal relevant to measured bearing lasso 9 burn degree.
Embodiment two: present embodiment is described further embodiment one, magnetic test coil 1-2 and drive coil 1-4 are copper core enamel wire coil described in present embodiment.
Embodiment three: present embodiment is described further embodiment one or two, work type skeleton 1-1 is plastic skeleton described in present embodiment.
Claims (3)
1. the bearing ring grinding burn pick-up unit based on barkhausen, it is characterized in that, it comprises Barkhausen noise sensor (1), power amplifier (2), sine-wave generator (3), noise signal one-level amplifying circuit (4), Hi-pass filter (5), low-pass filter (6), noise signal second amplifying circuit (7) and wave detector (8)
Barkhausen noise sensor (1) comprises work type skeleton (1-1), magnetic test coil (1-2), U-shaped skeleton (1-3), drive coil (1-4) and bar magnet (1-5);
Work type skeleton (1-1) is comprised of upper anchor ring, lower anchor ring and cylinder, cylinder is connected between anchor ring and lower anchor ring, the axis coinciding of upper anchor ring, lower anchor ring and cylinder, and internal diameter is identical, bar magnet (1-5) embeds in the hollow structure forming at upper anchor ring, lower anchor ring and cylinder, is wound around magnetic test coil (1-2) on the cylinder outer surface of work type skeleton (1-1); On the horizontal segment of U-shaped skeleton (1-3), be wound around drive coil (1-4), work type skeleton (1-1) is arranged in the open side of U-shaped skeleton (1-3), and place between two parties, the cylinder of work type skeleton (1-1) is axially perpendicular to the horizontal segment place plane of U-shaped skeleton (1-3);
The driving signal output part of sine-wave generator (3) connects the driving signal input of power amplifier (2), and the driving signal of power amplifier (2) output is used for driving drive coil (1-4);
The noise detecting signal of magnetic test coil (1-2) is received by noise signal one-level amplifying circuit (4), the one-level amplifying signal output terminal of noise signal one-level amplifying circuit (4) connects the filtering signal input end of Hi-pass filter (5), the filtering signal output terminal of Hi-pass filter (5) connects the filtering signal input end of low-pass filter (6), the filtering signal output terminal of low-pass filter (6) connects the amplifying signal input end of noise signal second amplifying circuit (7), the noise signal input end of the amplifying signal output terminal tie geophone (8) of noise signal second amplifying circuit (7).
2. the bearing ring grinding burn pick-up unit based on barkhausen according to claim 1, is characterized in that, described magnetic test coil (1-2) and drive coil (1-4) are copper core enamel wire coil.
3. the bearing ring grinding burn pick-up unit based on barkhausen according to claim 1 and 2, is characterized in that, work type skeleton (1-1) is plastic skeleton.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320811329.7U CN203572803U (en) | 2013-12-10 | 2013-12-10 | Grinding burn detecting device for bearing ring based on Barkhausen effect |
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| CN201320811329.7U CN203572803U (en) | 2013-12-10 | 2013-12-10 | Grinding burn detecting device for bearing ring based on Barkhausen effect |
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| CN203572803U true CN203572803U (en) | 2014-04-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866236A (en) * | 2016-03-26 | 2016-08-17 | 北京工业大学 | Bevel gear tooth surface grinding burn automatic detection apparatus and detection method thereof |
| CN105866234A (en) * | 2016-03-23 | 2016-08-17 | 重庆大学 | Eddy current detection-Barkhausen noise detection combined nondestructive testing apparatus and method for ferromagnetic material |
| CN107271537A (en) * | 2017-06-29 | 2017-10-20 | 中国航发哈尔滨轴承有限公司 | A kind of high-performance bearing grinding burn comprehensive test decision method |
| CN107576722A (en) * | 2017-08-30 | 2018-01-12 | 哈尔滨理工大学 | A kind of ferromagnetic material grinding burn detection method based on barkhausen |
| CN109357868A (en) * | 2018-10-08 | 2019-02-19 | 中国矿业大学 | The integrated sorting method of the frequency sweep vortex and Barkhausen Noise of bearing ring |
| CN111060241A (en) * | 2019-12-02 | 2020-04-24 | 天津大学 | Torque detection system and method based on magnetic Barkhausen effect |
-
2013
- 2013-12-10 CN CN201320811329.7U patent/CN203572803U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866234A (en) * | 2016-03-23 | 2016-08-17 | 重庆大学 | Eddy current detection-Barkhausen noise detection combined nondestructive testing apparatus and method for ferromagnetic material |
| CN105866234B (en) * | 2016-03-23 | 2019-09-06 | 重庆大学 | The ferromagnetic material nondestructive detecting instrument and method that current vortex and Barkhausen blend |
| CN105866236A (en) * | 2016-03-26 | 2016-08-17 | 北京工业大学 | Bevel gear tooth surface grinding burn automatic detection apparatus and detection method thereof |
| CN105866236B (en) * | 2016-03-26 | 2018-11-13 | 北京工业大学 | Tooth surfaces of bevel gears grinding burn automatic detection device and detection method |
| CN107271537A (en) * | 2017-06-29 | 2017-10-20 | 中国航发哈尔滨轴承有限公司 | A kind of high-performance bearing grinding burn comprehensive test decision method |
| CN107576722A (en) * | 2017-08-30 | 2018-01-12 | 哈尔滨理工大学 | A kind of ferromagnetic material grinding burn detection method based on barkhausen |
| CN109357868A (en) * | 2018-10-08 | 2019-02-19 | 中国矿业大学 | The integrated sorting method of the frequency sweep vortex and Barkhausen Noise of bearing ring |
| CN111060241A (en) * | 2019-12-02 | 2020-04-24 | 天津大学 | Torque detection system and method based on magnetic Barkhausen effect |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20151210 |
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| EXPY | Termination of patent right or utility model |