CN108226287A - A kind of ultrasonic detection method of spline - Google Patents
A kind of ultrasonic detection method of spline Download PDFInfo
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- CN108226287A CN108226287A CN201711205923.0A CN201711205923A CN108226287A CN 108226287 A CN108226287 A CN 108226287A CN 201711205923 A CN201711205923 A CN 201711205923A CN 108226287 A CN108226287 A CN 108226287A
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- spline
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
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- General Health & Medical Sciences (AREA)
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of ultrasonic detection method of spline in Ultrasonic Flaw Defect field, the ultrasonic detection method of the spline includes the following steps：S1：Spline processing：The surface of spline is clean using sand paper polishing, the spot and impurity of splined surfaces are removed, and with detergent that the surface clean of spline is clean；S2：Equipment is chosen：Choose supersonic detector, digital oscilloscope and the computer for being built-in with ultrasonic analysis software, supersonic detector connection digital oscilloscope, digital oscilloscope connection computer；S3：Ultrasonic listening；S4：Draw pulse-echo spectrogram；S5：Calculate echo frequency：The echo frequency of tested probe is calculated according to pulse-echo frequency spectrum；S6：Flaw detection is carried out the reception of ultrasonic wave by digital oscilloscope, and is analyzed using ultrasonic analysis software, is improved the accuracy of probe echo frequency test, is improved detection efficiency and accuracy of detection.
Description
Technical field
The present invention relates to Ultrasonic Flaw Defect field, specially a kind of ultrasonic detection method of spline.
Background technology
Key connecting is made of internal spline and external splines.Inside and outside spline is multiple tooth part, the spline on inner periphery
For internal spline, the spline on outer cylinder surface is external splines.Obviously, spline connection is development of the Flat dey joint in number.
It during the production of spline, in order to improve the mechanical performance of spline, needs to detect a flaw to spline, ultrasonic inspection is to utilize
Ultrasonic wave non-destructively checks the internal flaw of material or mechanical part, a kind of technology of scar, existing ultrasonic inspection side
Method can cause the error of sense of vision, influence the accuracy that echo frequency is tested of popping one's head in, and ultrasonic wave conversion ratio is low, accuracy of detection
It is low, for this purpose, it is proposed that a kind of ultrasonic detection method of spline.
Invention content
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of ultrasonic detection method of spline
Existing ultrasonic detection method can cause the error of sense of vision, influence the accuracy that echo frequency is tested of popping one's head in, and ultrasonic wave turns
Change the problem of rate is low, and accuracy of detection is low.
To achieve the above object, the present invention provides following technical solution：A kind of ultrasonic detection method of spline, the spline
Ultrasonic detection method includes the following steps：
S1：Spline processing：The surface of spline is clean using sand paper polishing, the spot and impurity of splined surfaces are removed, and
It is with detergent that the surface clean of spline is clean；
S2：Equipment is chosen：Choose supersonic detector, digital oscilloscope and the calculating for being built-in with ultrasonic analysis software
Machine, supersonic detector connection digital oscilloscope, digital oscilloscope connection computer；
S3：Ultrasonic listening：One layer of couplant is being coated by the surface of step S1 treated splines, with light pressure
By ultrasonic probe as the surface of splined shaft, ultrasonic listening is carried out, and ultrasonic probe is slided on the surface of splined shaft
It is dynamic so that the impulse waveform sewing of reflection reaches maximum, while adjust the vertical component and horizontal component of digital oscilloscope so that
Reflected pulse waveform is clearly shown, maximum reflection impulse waveform is lockked using digital oscilloscope；
S4：Draw pulse-echo spectrogram：It is anti-to the pulse in step S3 in the frequency auto Analysis of computer
Ejected wave shape carries out Fourier transformation, and according to the frequency nominal value of tested probe, corresponding frequency is chosen in the abscissa of spectrogram
Range draws out pulse-echo spectrogram；
S5：Calculate echo frequency：The echo frequency of tested probe is calculated according to pulse-echo frequency spectrum；
S6：Flaw detection：The degree of impairment of spline is judged according to pulse-echo spectrogram and echo frequency.
Preferably, in the step S1, when carrying out splined surfaces polishing, the roughness of the machining surface of part will be changed
Control is at 5-10 microns, and the roughness Confucius of casting surface is at 10-15 microns.
Preferably, in the step S1, after the completion of spline cleaning, natural air drying is carried out to spline.
Preferably, in the step S2, digital oscilloscope is connect by RS-232 serial ports with computer.
Preferably, the frequency probe of the supersonic detector in the step S2 is 4-8MHz, and it is with soft guarantor to pop one's head in
The longitudinal wave normal probe of cuticula.
Preferably, the couplant in the step S3 is mixed for one or both of machine oil or yellow glycerine.
Preferably, the temperature of the ultrasonic listening in the step S3 is 15-25 degrees Celsius, relative humidity 50%-
70%, atmospheric pressure 90-100kPa.
Preferably, it in the step S3, when carrying out ultrasonic listening, needs to remove high frequency, the interference of electromagnetic field and machine
The interference of tool vibration.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of ultrasonic detection method for spline that the invention proposes,
The reception of ultrasonic wave is carried out by digital oscilloscope, and is analyzed using ultrasonic analysis software, improves probe echo frequency
The accuracy of rate test, improves detection efficiency and accuracy of detection.
Description of the drawings
Fig. 1 is ultrasonic detection method flow chart of the present invention；
Fig. 2 is ultrasonic detection method system structure diagram of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the present invention provides a kind of ultrasonic detection method of spline：
Embodiment 1
The ultrasonic detection method of the spline includes the following steps：
S1：Spline processing：The surface of spline is clean using sand paper polishing, the spot and impurity of splined surfaces are removed, and
It is with detergent that the surface clean of spline is clean, when carrying out splined surfaces polishing, will change part machining surface it is coarse
Degree control is at 7 microns, and the roughness Confucius of casting surface is at 13 microns, and after the completion of spline cleaning, natural wind is carried out to spline
It is dry；
S2：Equipment is chosen：Choose supersonic detector, digital oscilloscope and the calculating for being built-in with ultrasonic analysis software
Machine, supersonic detector connection digital oscilloscope, digital oscilloscope connection computer, digital oscilloscope by RS-232 serial ports with
Computer connects, and the frequency probe of supersonic detector is 6MHz, and pop one's head in as the longitudinal wave normal probe with soft protective film；
S3：Ultrasonic listening：One layer of couplant is being coated by the surface of step S1 treated splines, couplant is machine
One or both of oil or yellow glycerine mix, and are carried out ultrasonic probe as the surface of splined shaft with light pressure
Ultrasonic listening, and ultrasonic probe is slided on the surface of splined shaft so that the impulse waveform sewing of reflection reaches maximum,
The vertical component and horizontal component of digital oscilloscope are adjusted simultaneously so that reflected pulse waveform is clearly shown, utilizes digital oscillography
Device locks maximum reflection impulse waveform, and the temperature of ultrasonic listening is 20 degrees Celsius, relative humidity 60%, and atmospheric pressure is
95kPa, when carrying out ultrasonic listening, need remove high frequency, electromagnetic field interference and mechanical oscillation interference；
S4：Draw pulse-echo spectrogram：It is anti-to the pulse in step S3 in the frequency auto Analysis of computer
Ejected wave shape carries out Fourier transformation, and according to the frequency nominal value of tested probe, corresponding frequency is chosen in the abscissa of spectrogram
Range draws out pulse-echo spectrogram；
S5：Calculate echo frequency：The echo frequency of tested probe is calculated according to pulse-echo frequency spectrum；
S6：Flaw detection：The degree of impairment of spline is judged according to pulse-echo spectrogram and echo frequency.
Embodiment 2
The ultrasonic detection method of the spline includes the following steps：
S1：Spline processing：The surface of spline is clean using sand paper polishing, the spot and impurity of splined surfaces are removed, and
It is with detergent that the surface clean of spline is clean, when carrying out splined surfaces polishing, will change part machining surface it is coarse
Degree control is at 10 microns, and the roughness Confucius of casting surface is at 15 microns, and after the completion of spline cleaning, natural wind is carried out to spline
It is dry；
S2：Equipment is chosen：Choose supersonic detector, digital oscilloscope and the calculating for being built-in with ultrasonic analysis software
Machine, supersonic detector connection digital oscilloscope, digital oscilloscope connection computer, digital oscilloscope by RS-232 serial ports with
Computer connects, and the frequency probe of supersonic detector is 8MHz, and pop one's head in as the longitudinal wave normal probe with soft protective film；
S3：Ultrasonic listening：One layer of couplant is being coated by the surface of step S1 treated splines, couplant is machine
One or both of oil or yellow glycerine mix, and are carried out ultrasonic probe as the surface of splined shaft with light pressure
Ultrasonic listening, and ultrasonic probe is slided on the surface of splined shaft so that the impulse waveform sewing of reflection reaches maximum,
The vertical component and horizontal component of digital oscilloscope are adjusted simultaneously so that reflected pulse waveform is clearly shown, utilizes digital oscillography
Device locks maximum reflection impulse waveform, and the temperature of ultrasonic listening is 25 degrees Celsius, relative humidity 70%, and atmospheric pressure is
100kPa, when carrying out ultrasonic listening, need remove high frequency, electromagnetic field interference and mechanical oscillation interference；
S4：Draw pulse-echo spectrogram：It is anti-to the pulse in step S3 in the frequency auto Analysis of computer
Ejected wave shape carries out Fourier transformation, and according to the frequency nominal value of tested probe, corresponding frequency is chosen in the abscissa of spectrogram
Range draws out pulse-echo spectrogram；
S5：Calculate echo frequency：The echo frequency of tested probe is calculated according to pulse-echo frequency spectrum；
S6：Flaw detection：The degree of impairment of spline is judged according to pulse-echo spectrogram and echo frequency.
Embodiment 3
The ultrasonic detection method of the spline includes the following steps：
S1：Spline processing：The surface of spline is clean using sand paper polishing, the spot and impurity of splined surfaces are removed, and
It is with detergent that the surface clean of spline is clean, when carrying out splined surfaces polishing, will change part machining surface it is coarse
Degree control is at 5 microns, and the roughness Confucius of casting surface is at 10 microns, and after the completion of spline cleaning, natural wind is carried out to spline
It is dry；
S2：Equipment is chosen：Choose supersonic detector, digital oscilloscope and the calculating for being built-in with ultrasonic analysis software
Machine, supersonic detector connection digital oscilloscope, digital oscilloscope connection computer, digital oscilloscope by RS-232 serial ports with
Computer connects, and the frequency probe of supersonic detector is 4MHz, and pop one's head in as the longitudinal wave normal probe with soft protective film；
S3：Ultrasonic listening：One layer of couplant is being coated by the surface of step S1 treated splines, couplant is machine
One or both of oil or yellow glycerine mix, and are carried out ultrasonic probe as the surface of splined shaft with light pressure
Ultrasonic listening, and ultrasonic probe is slided on the surface of splined shaft so that the impulse waveform sewing of reflection reaches maximum,
The vertical component and horizontal component of digital oscilloscope are adjusted simultaneously so that reflected pulse waveform is clearly shown, utilizes digital oscillography
Device locks maximum reflection impulse waveform, and the temperature of ultrasonic listening is 15 degrees Celsius, relative humidity 50%, and atmospheric pressure is
90kPa, when carrying out ultrasonic listening, need remove high frequency, electromagnetic field interference and mechanical oscillation interference；
S4：Draw pulse-echo spectrogram：It is anti-to the pulse in step S3 in the frequency auto Analysis of computer
Ejected wave shape carries out Fourier transformation, and according to the frequency nominal value of tested probe, corresponding frequency is chosen in the abscissa of spectrogram
Range draws out pulse-echo spectrogram；
S5：Calculate echo frequency：The echo frequency of tested probe is calculated according to pulse-echo frequency spectrum；
S6：Flaw detection：The degree of impairment of spline is judged according to pulse-echo spectrogram and echo frequency.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of ultrasonic detection method of spline, it is characterised in that：The ultrasonic detection method of the spline includes the following steps：
S1：Spline processing：The surface of spline is clean using sand paper polishing, the spot and impurity of splined surfaces are removed, and with clearly
The clean dose of surface clean by spline is clean；
S2：Equipment is chosen：Supersonic detector, digital oscilloscope and the computer for being built-in with ultrasonic analysis software are chosen, is surpassed
Sonic analyzer connects digital oscilloscope, digital oscilloscope connection computer；
S3：Ultrasonic listening：One layer of couplant is being coated by the surface of step S1 treated splines, it will be super with light pressure
Sonic probe carries out ultrasonic listening, and ultrasonic probe is slided on the surface of splined shaft, makes as the surface of splined shaft
The impulse waveform sewing that must be reflected reaches maximum, while adjust the vertical component and horizontal component of digital oscilloscope so that reflection
Impulse waveform is clearly shown, maximum reflection impulse waveform is lockked using digital oscilloscope；
S4：Draw pulse-echo spectrogram：In the frequency auto Analysis of computer, to the pulse-echo in step S3
Shape carries out Fourier transformation, and according to the frequency nominal value of tested probe, corresponding frequency range is chosen in the abscissa of spectrogram,
Draw out pulse-echo spectrogram；
S5：Calculate echo frequency：The echo frequency of tested probe is calculated according to pulse-echo frequency spectrum；
S6：Flaw detection：The degree of impairment of spline is judged according to pulse-echo spectrogram and echo frequency.
2. a kind of ultrasonic detection method of spline according to claim 1, it is characterised in that：In the step S1, into
When row splined surfaces are polished, the roughness control of machining surface of part will be changed at 5-10 microns, the roughness of casting surface
Confucius is at 10-15 microns.
3. a kind of ultrasonic detection method of spline according to claim 1, it is characterised in that：In the step S1, in flower
After the completion of key cleaning, natural air drying is carried out to spline.
4. a kind of ultrasonic detection method of spline according to claim 1, it is characterised in that：In the step S2, number
Oscillograph is connect by RS-232 serial ports with computer.
5. a kind of ultrasonic detection method of spline according to claim 1, it is characterised in that：Ultrasound in the step S2
The frequency probe of wave inspection instrument is 4-8MHz, and is popped one's head in as the longitudinal wave normal probe with soft protective film.
6. a kind of ultrasonic detection method of spline according to claim 1, it is characterised in that：Coupling in the step S3
Agent is mixed for one or both of machine oil or yellow glycerine.
7. a kind of ultrasonic detection method of spline according to claim 1, it is characterised in that：Ultrasound in the step S3
The temperature of wave detection is 15-25 degrees Celsius, relative humidity 50%-70%, atmospheric pressure 90-100kPa.
8. a kind of ultrasonic detection method of spline according to claim 1, it is characterised in that：In the step S3, into
During row ultrasonic listening, need remove high frequency, electromagnetic field interference and mechanical oscillation interference.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711205923.0A CN108226287A (en) | 2017-11-27 | 2017-11-27 | A kind of ultrasonic detection method of spline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711205923.0A CN108226287A (en) | 2017-11-27 | 2017-11-27 | A kind of ultrasonic detection method of spline |
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| CN108226287A true CN108226287A (en) | 2018-06-29 |
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| CN201711205923.0A Pending CN108226287A (en) | 2017-11-27 | 2017-11-27 | A kind of ultrasonic detection method of spline |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424804A (en) * | 2015-12-03 | 2016-03-23 | 北京工商大学 | Ultrasonic detecting method for defect of remanufactured composite part |
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- 2017-11-27 CN CN201711205923.0A patent/CN108226287A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424804A (en) * | 2015-12-03 | 2016-03-23 | 北京工商大学 | Ultrasonic detecting method for defect of remanufactured composite part |
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Application publication date: 20180629 |