CN106770674A - A kind of ultrasonic cutter detecting method - Google Patents

A kind of ultrasonic cutter detecting method Download PDF

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Publication number
CN106770674A
CN106770674A CN201611110894.5A CN201611110894A CN106770674A CN 106770674 A CN106770674 A CN 106770674A CN 201611110894 A CN201611110894 A CN 201611110894A CN 106770674 A CN106770674 A CN 106770674A
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ultrasonic cutter
ultrasonic
cutter
detection
frequency
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CN106770674B (en
Inventor
董志刚
康仁科
张迅
王毅丹
朱祥龙
周平
贾振元
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Dalian University of Technology
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Dalian University of Technology
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Priority to US16/467,376 priority patent/US11029286B2/en
Priority to JP2019549622A priority patent/JP6798731B2/en
Priority to PCT/CN2017/091440 priority patent/WO2018103323A1/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
    • G01N29/04Analysing solids
    • G01N29/12Analysing solids by measuring frequency or resonance of acoustic waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/01Indexing codes associated with the measuring variable
    • G01N2291/014Resonance or resonant frequency
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/023Solids
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/028Material parameters
    • G01N2291/0289Internal structure, e.g. defects, grain size, texture

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The invention discloses a kind of ultrasonic cutter detecting method, with following steps:Initial survey:Frequency and amplitude detects and fall-of-potential method detection that ultrasonic cutter not by initial survey, then re-starts above two detection in above two detection scheme, if not judging that the ultrasonic cutter is unqualified by above two detection scheme yet;Recheck:Free Modal is detected and pressure Modal detection.The present invention utilizes the geometric shape and the difference of direction of check of the micro-crack of ultrasonic tool surface, cause crackle has different sensitivitys to different ultrasonic vibrational modes, coordinate fall-of-potential method and frequency and amplitude method of testing to be detected again, the recall rate and detection rates of unqualified ultrasonic cutter can be improved.

Description

A kind of ultrasonic cutter detecting method
Technical field
The present invention relates to detection field, specifically a kind of ultrasonic cutter detecting method.
Background technology
Application of the ultrasonic wave added Machining Technology for Cutting in national economy production and living is increasingly extensive.With traditional processing not Together, in ultrasonic wave added machining cutter while doing cutting movement, bearing cutting force, also in the driving of ultrasonic vibration system Under do the vibration of the multi-forms such as high frequency stretching/compressing, torsion, swing.Dither is to cutter quality, particularly tool surface Integrality proposes high requirement, if cutter interior has micro-crack, under high frequency forced vibration, Crack Extension causes knife Tool fracture distress, easily causes the part to be processed even damage of lathe.Therefore, before actual cut processing, to cutter Can be tested, it is necessary for will have defective cutter detection scrapping.
Domestic and international Patents are segmented into following a few classes:1. existed using the stress of supersonic frequency change, tested Test specimen on, apply the alternate stress of high frequency in the short time to exemplar, the fracture or surface topography situation for observing test specimen are sentenced Whether disconnected exemplar reaches standard.For example in a kind of temperature checking method suitable for cutter fatigue damage, by detecting that ultrasound adds What work instrument sent when being motivated by ultrasound is excited the features such as the linear coefficient of resonance wave, and the material and structure to instrument are made Fatigue damage is detected.The ultrasonic cutter that this less efficient inapplicable mass detection of detection method is dispatched from the factory.2. sound emission is similar to Cleaning Principle, by test specimen launch certain frequency, the ultrasonic signal of phase.The ultrasonic wave reflected by collection is believed Number judge the crackle of test specimen, or defect situation.This experimental technique is not suitable for the detection of ultrasonic cutter equally.If The not defect such as crackle when cutter just begins to use, and simply metallographic structure insufficient strength, also result in cutter in high frequency It is broken with loaded situation.So ultrasonic cutter cannot be accurately detected with party's rule.3. fall-of-potential method detects test specimen Crackle, the detection detection method is used for the crack detection aspect of long-distance pipe, such as a kind of fatigue at low temperatures Crack Extension speed Rate experimental rig, the crack Propagation state of metal material is detected using direct current potential drop method.If simple by potential drop The crack detection aspect that method is used in ultrasonic cutter occurs larger error.Because cutter is in the case of non-vibrating, crackle is not Stress, in closure state, resistance and normal condition are without too big difference.And ultrasonic cutter can be made under stress, Vibration Condition Into the opening and closing of crackle, so this patent makes improvement, it is allowed in stress, vibrational state tests its electrical parameter, improve inspection The accuracy rate of survey.
This patent combines frequency and amplitude detection using the ultrasonic cutter detecting method of designed, designed, and fall-of-potential method is detected, Free Modal, the method for pressure Modal detection, by a complete testing process, improves ultrasonic cutter quality testing accurate Rate, reduces the ultrasonic cutter that dispatches from the factory and occurs the probability of fracture failure in process, improves production efficiency and process safety Property.
The content of the invention
According to technical problem set forth above, and provide a kind of ultrasonic cutter detecting method.
The technological means that the present invention is used is as follows:
A kind of ultrasonic cutter detecting method, with following steps:
Initial survey:
Frequency and amplitude is detected:Ultrasonic cutter is in resonant condition, collect the resonant frequency of ultrasonic cutter certain position And amplitude;The resonant frequency and amplitude of ultrasonic cutter other positions are collected in the same way;The resonant frequency that is collected into and shake Width (refers to the resonant frequency and amplitude of the ultrasonic cutter certain position and other positions being collected into frequency and amplitude detection) Fluctuated in normal range (NR), then judge the ultrasonic cutter by initial survey, normal range (NR) refers to resonant frequency in ultrasonic-frequency power supply Corresponding setting value in system up and down fluctuates in the range of 10%, and amplitude is upper and lower definite value set by laser displacement sensor Fluctuated in the range of 5%;
Fall-of-potential method is detected:Detection head and ultrasonic tool contact, make ultrasonic cutter be in resonant condition afterwards, use potential drop Method detects the voltage and electric current between the non-contact point on the contact point and ultrasonic cutter of detection head and ultrasonic cutter;Change The contacting points position of detection head and ultrasonic cutter, detects that new contact point is non-described new with ultrasonic cutter in the same way Voltage and electric current between contact point;The voltage and electric current for detecting are (on contact point and ultrasonic cutter at the non-contact point Between voltage and electric current and new contact point and ultrasonic cutter on voltage and electric current between the non-new contact point) Fluctuated in normal range (NR), then judge the ultrasonic cutter by initial survey, normal range (NR) refers to voltage and examined with electric current The setting value of measurement equipment up and down fluctuates in the range of 8%;
Ultrasonic cutter not by initial survey, then re-starts above two detection, if not yet in above two detection scheme By above two detection scheme, then judge that the ultrasonic cutter is unqualified;Frequency and amplitude detects do not have and fall-of-potential method detection between There is context in logic, first do any detection and belong to the application scope of the claimed.
Recheck:
Free Modal is detected:By the ultrasonic cutter of initial survey in the frequency range internal vibration of 15KHz~40KHz, and find Each resonance mode of ultrasonic cutter in the frequency range of 15KHz~40KHz,
Under each resonance mode, more than normal work amplitude 20% in the case of, be broken after vibration, then sentence Determine the ultrasonic cutter to be detected by Free Modal,
It is broken, then judges that the ultrasonic cutter is unqualified;
Pressure Modal detection:Detection head applies to exceed service pressure to the ultrasonic cutter detected by Free Modal In the case of 20% pressure, ultrasonic cutter and is found ultrasonic cutter and is existed in the frequency range internal vibration of 15KHz~40KHz Each resonance mode in the frequency range of 15KHz~40KHz, is broken, then after being vibrated under each resonance mode The ultrasonic cutter that detection head is changed to being detected by Free Modal applies the contact point of compression, detects in the same way, if Situation about being broken, then judge the ultrasonic cutter by rechecking, the inspection in the same way described in pressure Modal detection Survey refers to frequency range internal vibration of the ultrasonic cutter in 15KHz~40KHz, and finds ultrasonic cutter 15KHz~40KHz's Each resonance mode in frequency range, vibrates under each resonance mode;
During pressure Modal detection, detection head keeps connecing all the time with the ultrasonic cutter detected by Free Modal Touch.
The vibration of ultrasonic cutter is realized by connected ultrasonic amplitude transformer, and drives ultrasonic amplitude of fluctuation by ultrasonic-frequency power supply Bar changes the frequency and amplitude of ultrasonic cutter.The vibration of ultrasonic cutter includes resonance,
Ultrasonic-frequency power supply Automatic-searching resonant frequency, and ultrasonic-frequency power supply power output and frequency are adjusted repeatedly, make ultrasonic cutter Reach resonance.
The size and Orientation of compression described in pressure Modal detection is the function or constant of time.
Resonant frequency and amplitude are collected by laser displacement sensor in frequency and amplitude detection.
The present invention causes crackle to not using the geometric shape and the difference of direction of check of the micro-crack of ultrasonic tool surface Same ultrasonic vibrational mode has different sensitivitys, then is used cooperatively with fall-of-potential method and frequency and amplitude detection method, can To improve the recall rate and detection rates of unqualified ultrasonic cutter.
The present invention can be widely popularized in fields such as detections for the foregoing reasons.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of flow chart of ultrasonic cutter detecting method in specific embodiment of the invention.
Fig. 2 is a kind of ultrasonic tool detection devices schematic diagram in embodiments of the invention 1.
Fig. 3 is detection head schematic diagram in embodiments of the invention 1.
Fig. 4 is connection schematic diagram when fall-of-potential method is detected in embodiments of the invention 1.
Fig. 5 is detection head schematic diagram in embodiments of the invention 2 and embodiment 3.
Fig. 6 is connection schematic diagram when fall-of-potential method is detected in embodiments of the invention 2.
Fig. 7 is the force adjustment knob schematic diagram of detection head in embodiments of the invention 2 and embodiment 3.
Fig. 8 is connection schematic diagram when fall-of-potential method is detected in embodiments of the invention 3.
Specific embodiment
A kind of ultrasonic cutter detecting method, with following steps:
Initial survey:
Frequency and amplitude is detected:Ultrasonic cutter is in resonant condition, collect the resonant frequency of ultrasonic cutter certain position And amplitude;The resonant frequency and amplitude of ultrasonic cutter other positions are collected in the same way;The resonant frequency that is collected into and shake Width fluctuates in normal range (NR), then judge that the ultrasonic cutter passes through initial survey;
Fall-of-potential method is detected:Detection head and ultrasonic tool contact, make ultrasonic cutter be in resonant condition afterwards, use potential drop Method detects the voltage and electric current between the non-contact point on the contact point and ultrasonic cutter of detection head and ultrasonic cutter;Change The contacting points position of detection head and ultrasonic cutter, detects that new contact point is non-described new with ultrasonic cutter in the same way Voltage and electric current between contact point;The voltage and electric current for detecting fluctuate in normal range (NR), then judge the ultrasound knife Tool passes through initial survey;
Ultrasonic cutter not by initial survey, then re-starts above two detection, if not yet in above two detection scheme By above two detection scheme, then judge that the ultrasonic cutter is unqualified;
Recheck:
Free Modal is detected:By the ultrasonic cutter of initial survey in the frequency range internal vibration of 15KHz~40KHz, and find Each resonance mode of ultrasonic cutter in the frequency range of 15KHz~40KHz,
Under each resonance mode, more than normal work amplitude 20% in the case of, be broken after vibration, then sentence Determine the ultrasonic cutter to be detected by Free Modal,
It is broken, then judges that the ultrasonic cutter is unqualified;
Pressure Modal detection:Detection head applies to exceed service pressure to the ultrasonic cutter detected by Free Modal In the case of 20% pressure, ultrasonic cutter and is found ultrasonic cutter and is existed in the frequency range internal vibration of 15KHz~40KHz Each resonance mode in the frequency range of 15KHz~40KHz, is broken, then after being vibrated under each resonance mode The ultrasonic cutter that detection head is changed to being detected by Free Modal applies the contact point of compression, detects in the same way, if Situation about being broken, then judge the ultrasonic cutter by rechecking;
During pressure Modal detection, detection head keeps connecing all the time with the ultrasonic cutter detected by Free Modal Touch.
The vibration of ultrasonic cutter is realized by connected ultrasonic amplitude transformer, and drives ultrasonic amplitude of fluctuation by ultrasonic-frequency power supply Bar changes the frequency and amplitude of ultrasonic cutter.
Ultrasonic-frequency power supply Automatic-searching resonant frequency, and ultrasonic-frequency power supply power output and frequency are adjusted repeatedly, make ultrasonic cutter Reach resonance.
The size and Orientation of compression described in pressure Modal detection is the function or constant of time.
Resonant frequency and amplitude are collected by laser displacement sensor in frequency and amplitude detection.
Embodiment 1
As Figure 1-Figure 4, a kind of ultrasonic tool detection devices, including base 1, turnbarrel 2, ultrasonic amplitude transformer 3, swash Optical displacement sensor 4 and detection head 5, detection head 5 can be along the transverse directions of base, longitudinal direction movement, it is also possible to which regulation is fixed on inspection The nut of the bottom of gauge head 5 adjusts the height of detection head 5.When regulation is to appropriate location, can be by the spiral shell in detection head 5 Silk is fixed.When the resonant frequency and amplitude of ultrasonic cutter 6 is collected with laser displacement sensor 4, detection head 5 is removed, When fall-of-potential method to be carried out is detected, detection head 5 is moved into the position of ultrasonic cutter 6 and is detected.
The detection head 5 is radial direction detection head, and radial direction detection head has a groove 51 for accommodating ultrasonic cutter 6, groove 51 with The contact portion of ultrasonic cutter 6 is manufactured by the conductive material with big damping, such as copper.From ultrasonic cutter 6 and radial direction detection head (having wire fairlead 52 in radial direction detection head) wire 7 is drawn at contact point, to carry out fall-of-potential method detection.The end of groove 51 With sword groove 53 is held, prevent radial direction detection head from being touched in resonant process and when applying compression with the ultrasonic front ends sword of cutter 6 Hit and tipping occurs.
Radial direction detection head apply compression mode be:Ultrasonic cutter 6 is slided along groove 51 to the end of groove 51, so that The compression that the cell wall of groove 51 for being subject to ultrasonic cutter 6 applies is increasing.
Laser displacement sensor 4 can be along the resonant frequency of the ultrasonic cutter 6 of three angle detectings and amplitude.
Ultrasonic amplitude transformer 3 is located in turnbarrel 2, can be by turnbarrel 2 (turnbarrel 2 can rotate around horizontal axis) Respect thereto 1 rotates, so as to drive ultrasonic cutter 6 to rotate to test position, the energy that ultrasonic amplitude transformer 3 produces ultrasonic-frequency power supply Ultrasonic cutter 6 is passed to, and amplitude is amplified.
Ultrasonic cutter 6 is sharp knife shape ultrasound cutter.
A kind of ultrasonic cutter detecting method, with following steps:
Initial survey:
Frequency and amplitude is detected:Ultrasonic cutter 6 is arranged on the ultrasonic amplitude transformer 3 that can be rotated in the axial direction, is started Ultrasonic-frequency power supply, makes ultrasonic cutter 6 be in resonant condition, and the resonance of the side blade of ultrasonic cutter 6 is collected with laser displacement sensor 4 Frequency and amplitude, then rotate (180 °) ultrasonic amplitude transformer 3 and ultrasonic cutter 6;It is another that ultrasonic cutter 6 is collected in the same way The resonant frequency and amplitude of side tool sword;The resonant frequency and amplitude being collected into twice fluctuate in normal range (NR), then judging should Ultrasonic cutter 6 passes through initial survey;
Fall-of-potential method is detected:Ultrasonic cutter 6 is arranged on the ultrasonic amplitude transformer 3 that can be rotated in the axial direction, detection First 5 are pressed on ultrasonic cutter 6, start ultrasonic-frequency power supply, ultrasonic cutter 6 is in resonant condition afterwards, are detected with fall-of-potential method and examined On the contact point (being located on the ultrasonic side blade of cutter 6) and ultrasound cutter 6 of gauge head 5 and ultrasonic cutter 6 at the non-contact point Between voltage and electric current;Rotation (180 °) ultrasonic amplitude transformer 3 and ultrasonic cutter 6, change detection head 5 connect with ultrasonic cutter 6 Contact position, detects that new contact point (being located on the ultrasonic opposite side blade of cutter 6) is non-with ultrasonic cutter 6 in the same way Voltage and electric current between the new contact point;The voltage and electric current for detecting fluctuate in normal range (NR), then judge The ultrasonic cutter 6 passes through initial survey;
Ultrasonic cutter 6 not by initial survey, then re-starts above two detection, if not yet in above two detection scheme By above two detection scheme, then judge that the ultrasonic cutter 6 is unqualified;
Recheck:
Free Modal is detected:It is arranged on ultrasonic amplitude transformer 3 by the ultrasonic cutter 6 of initial survey, starts ultrasonic-frequency power supply, is utilized The automatic frequency sweep function of ultrasonic-frequency power supply, the automatic frequency sweep in the frequency range of 15KHz~40KHz, and then drive ultrasonic cutter 6 to exist The frequency range internal vibration of 15KHz~40KHz, and find each in the frequency range of 15KHz~40KHz of ultrasonic cutter 6 Resonance mode,
Under each resonance mode, more than normal work amplitude 20% in the case of, be broken after vibration, then sentence Determine the ultrasonic cutter 6 to be detected by Free Modal,
It is broken, then judges that the ultrasonic cutter 6 is unqualified;
Pressure Modal detection:5 pairs of side blades of ultrasonic cutter 6 detected by Free Modal of detection head apply to exceed normally In the case of the pressure of operating pressure 20%, open ultrasonic-frequency power supply, using the automatic frequency sweep function of ultrasonic-frequency power supply, 15KHz~ Automatic frequency sweep in the frequency range of 40KHz, and then ultrasonic cutter 6 is driven in the frequency range internal vibration of 15KHz~40KHz, and Each resonance mode of ultrasonic cutter 6 in the frequency range of 15KHz~40KHz is found, while the compression can be changed Size and Orientation or maintain initial value constant, it is therefore intended that real work shape when ultrasonic cutter 6 is processed under simulating cutting state State, is broken after being vibrated under each resonance mode, then rotate (180 °) ultrasonic amplitude transformer 3 and ultrasonic cutter 6, detection The first 5 ultrasonic cutters 6 changed to being detected by Free Modal apply the contact point of compression, detect in the same way, if not Situation about being broken, then judge the ultrasonic cutter 6 by rechecking;
During pressure Modal detection, detection head 5 keeps connecing all the time with the ultrasonic cutter 6 detected by Free Modal Touch.
The vibration of ultrasonic cutter 6 is realized by connected ultrasonic amplitude transformer 3, and drives ultrasound to become by ultrasonic-frequency power supply Width bar 3 changes the frequency and amplitude of ultrasonic cutter 6.
Ultrasonic-frequency power supply Automatic-searching resonant frequency, and ultrasonic-frequency power supply power output and frequency are adjusted repeatedly, make ultrasonic cutter 6 Reach resonance.
The size and Orientation of compression described in pressure Modal detection is the function of time.
Embodiment 2
As shown in Figure 5-Figure 7, a kind of ultrasonic tool detection devices and a kind of ultrasonic cutter detecting method, itself and embodiment 1 Disclosed in a kind of ultrasonic tool detection devices and a kind of distinguishing characteristics of ultrasonic cutter detecting method be:
The detection head 5` is axial detection head, and the cross section of axial detection head is U-shaped, and four force adjustment are provided with its opening Knob 8, each two force adjustment knob 8 is one group and is oppositely arranged with two other that force adjustment knob 8 includes the bolt being sequentially connected 81st, spring 82 and the contact bar 83 contacted with ultrasonic cutter 6, have the hole 84 that the contact bar 83 is passed through in axial detection head, The bolt 81 is connected by bolt block 85 with the axial detection head,
Axial detection head is open with the blade part of ultrasonic cutter 6 to be contacted, contact bar 83 and the ultrasonic contact portion of cutter 6 by Nylon is manufactured.
The mode that axial detection head applies compression is:The bolt 81 is rotated, so that contact bar 83 is applied to ultrasound Compression on cutter 6 is increasing, and the other end of the contact bar 83 is retained in the hole 84 all the time.
Embodiment 3
As shown in Fig. 5, Fig. 7 and Fig. 8, a kind of ultrasonic tool detection devices and a kind of ultrasonic cutter detecting method, itself and reality Apply a kind of ultrasonic tool detection devices disclosed in example 2 and a kind of distinguishing characteristics of ultrasonic cutter detecting method is:Ultrasound knife Tool 6` is disc ultrasound cutter.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.

Claims (5)

1. a kind of ultrasonic cutter detecting method, it is characterised in that with following steps:
Initial survey:
Frequency and amplitude is detected:Ultrasonic cutter is in resonant condition, collect the resonant frequency of ultrasonic cutter certain position and shake Width;The resonant frequency and amplitude of ultrasonic cutter other positions are collected in the same way;The resonant frequency and amplitude being collected into are equal Fluctuated in normal range (NR), then judge that the ultrasonic cutter passes through initial survey;
Fall-of-potential method is detected:Detection head and ultrasonic tool contact, make ultrasonic cutter be in resonant condition afterwards, are examined with fall-of-potential method Survey voltage and electric current between the non-contact point on the contact point and ultrasonic cutter of detection head and ultrasonic cutter;Change detection Head and the contacting points position of ultrasonic cutter, detect new contact point with the non-new contact on ultrasonic cutter in the same way Voltage and electric current between point;The voltage and electric current for detecting fluctuate in normal range (NR), then judge that the ultrasonic cutter leads to Cross initial survey;
Ultrasonic cutter not by initial survey, then re-starts above two detection, if not passing through yet in above two detection scheme Above two detection scheme, then judge that the ultrasonic cutter is unqualified;
Recheck:
Free Modal is detected:By the ultrasonic cutter of initial survey in the frequency range internal vibration of 15KHz~40KHz, and ultrasound is found Each resonance mode of cutter in the frequency range of 15KHz~40KHz,
Under each resonance mode, more than normal work amplitude 20% in the case of, be broken after vibration, then judge should Ultrasonic cutter by Free Modal detect,
It is broken, then judges that the ultrasonic cutter is unqualified;
Pressure Modal detection:Detection head is applied more than service pressure 20% to the ultrasonic cutter detected by Free Modal In the case of pressure, ultrasonic cutter 15KHz~40KHz frequency range internal vibration, and find ultrasonic cutter 15KHz~ Each resonance mode in the frequency range of 40KHz, is broken after being vibrated under each resonance mode, then detection head changes Become the contact point that the ultrasonic cutter to being detected by Free Modal applies compression, detect in the same way, if breaking Situation about splitting, then judge the ultrasonic cutter by rechecking;
During pressure Modal detection, detection head keeps contacting all the time with the ultrasonic cutter detected by Free Modal.
2. a kind of ultrasonic cutter detecting method according to claim 1, it is characterised in that:The vibration of ultrasonic cutter by with The ultrasonic amplitude transformer of its connection is realized, and drives ultrasonic amplitude transformer to change the frequency and amplitude of ultrasonic cutter by ultrasonic-frequency power supply.
3. a kind of ultrasonic cutter detecting method according to claim 2, it is characterised in that:Ultrasonic-frequency power supply Automatic-searching resonance Frequency, and ultrasonic-frequency power supply power output and frequency are adjusted repeatedly, ultrasonic cutter is reached resonance.
4. a kind of ultrasonic cutter detecting method according to claim 1, it is characterised in that:Pressed described in pressure Modal detection The size and Orientation of stress is the function or constant of time.
5. a kind of ultrasonic cutter detecting method according to claim 1, it is characterised in that:Frequency and amplitude detection in resonance frequently Rate and amplitude are collected by laser displacement sensor.
CN201611110894.5A 2016-12-06 2016-12-06 A kind of ultrasound cutter detecting method Active CN106770674B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201611110894.5A CN106770674B (en) 2016-12-06 2016-12-06 A kind of ultrasound cutter detecting method
US16/467,376 US11029286B2 (en) 2016-12-06 2017-07-03 Ultrasonic cutter quality inspection method and device
JP2019549622A JP6798731B2 (en) 2016-12-06 2017-07-03 Ultrasonic cutter detection method
PCT/CN2017/091440 WO2018103323A1 (en) 2016-12-06 2017-07-03 Ultrasonic cutter detection method and device

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CN201611110894.5A CN106770674B (en) 2016-12-06 2016-12-06 A kind of ultrasound cutter detecting method

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