CN109834521A - A kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element - Google Patents
A kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element Download PDFInfo
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- CN109834521A CN109834521A CN201910062558.5A CN201910062558A CN109834521A CN 109834521 A CN109834521 A CN 109834521A CN 201910062558 A CN201910062558 A CN 201910062558A CN 109834521 A CN109834521 A CN 109834521A
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- 238000000605 extraction Methods 0.000 title claims abstract description 22
- 238000003754 machining Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 239000000284 extract Substances 0.000 claims abstract description 11
- 239000011162 core material Substances 0.000 claims description 80
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 5
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract description 17
- 238000010168 coupling process Methods 0.000 abstract description 17
- 238000005859 coupling reaction Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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Abstract
The invention discloses a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction elements, belong to ultrasonic vibration aided grinding technical field, when being motivated by primary side primary coil by ultrasonic-frequency power supply high frequency electrical signal in the device of the invention, the alternating magnetic field of primary side primary coil generation high frequency, just secondary coupling is formed with secondary side electric energy transmission coil, it produces electricl energy, powers for ultrasonic vibrator, band power driven tools generate high-frequency vibration；Secondary side electric energy transmission coil and primary side second signal extract coil and form two secondary couplings, it is acquired by electric current, voltage signal that primary side second signal of the signal processing apparatus to two secondary couplings extracts coil lead, two secondary couplings can be realized voltage, the electric current for extracting any time in ultrasonic cutter process, the Dynamic Signals such as phase, suitable for being installed and used on lathe, cutter amplitude can be monitored in real time and realize the stability control of cutter amplitude.
Description
Technical field
The present invention relates to ultrasonic vibration aided grinding technical fields, and in particular to a kind of non-contact rotary ultrasonic machining Dynamic Signal
Extraction element.
Background technique
Ultrasonic wave added processing technology is widely used in precise and ultraprecise machining field, and unique processing technology can be effective
Reduction processing when cutting force, reduce tool wear, improve machined surface quality and processing efficiency, be widely used in making pottery
The difficult-to-machine materials such as the hard brittle materials such as porcelain, glass and fibre reinforced composites, in optical glass, SiC ceramic, Dali
The processing effect in the fields such as stone has obtained sufficient verifying, and has obtained being widely recognized as industry.But with machine parts'precise
Change and require increasingly to improve, ultrasonic wave added processing technology, which is also required to make, to be correspondingly improved to adapt to higher requirement on machining accuracy.
Cutter amplitude plays part processing quality important as an important parameter in ultrasonic wave added processing technology
Effect, therefore it is very necessary that the Dynamic Signal during extraction tool sharpening, which carries out analysis in real time to cutter amplitude,.Ultrasound
Vibration in secondary process technology is mostly to generate vibration since ultrasonic vibrator is motivated by high frequency electrical signal, and then pass to cutter
Generate vibration.Common vibration amplitude measurement method has the tool microscope direct method of measurement, laser doppler vibrometer mensuration, adds at present
Speedometer method, photoelectricity vibration measuring method etc..But the above measurement method can only realize the measurement of static bottom tool amplitude, and processed
Due to the interference of the factors such as coolant liquid, machine noise in journey, it cannot achieve dynamic and measure, how by the voltage of tool condition
The signal extractions such as electric current come out, and realize that cutter work condition inspection becomes those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
The present invention aiming at the problems existing in the prior art, discloses a kind of non-contact rotary ultrasonic machining Dynamic Signal and mentions
Device is taken, two groups of sector magnetic cores and coil by being integrated in primary side magnetic core mounting base by the present invention, using electromagnetic coupling theory,
Two secondary couplings are formed with secondary side electric energy transmission coil, the dynamic electric signal during cutter rotary ultrasonic machining is can be realized and mentions
It takes, to realize the monitoring in tool amplitude.
The present invention is implemented as follows:
A kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element, including machine tool chief axis, the periphery of the machine tool chief axis
It is provided with primary side magnetic core mounting base；The end face of the primary side magnetic core mounting base is set there are two symmetrical fan groove, and two symmetrical
Fan groove in be separately installed with primary side second level magnetic core, primary side primary magnetic core；Primary side second level letter is packaged in primary side second level magnetic core
Number coil is extracted, is packaged with primary side primary coil in primary side primary magnetic core.By by two groups of sector magnetic cores: primary side second level magnetic core,
Primary side primary magnetic core and with two groups of coils: primary side second signal extracts coil, primary side primary coil and is integrated in primary side magnetic core peace
It fills on seat, using electromagnetic coupling theory, forms two secondary couplings with secondary side electric energy transmission coil, realize that the ultrasonic cutter of extraction is processed
The voltage, electric current of any time in journey, the Dynamic Signals such as phase, suitable for being installed and used on lathe, for real time monitoring cutter vibration
Width simultaneously realizes that the stability control of cutter amplitude provides certain technical support.
It is provided with hole on the side cylindrical surface of primary side magnetic core mounting base, communicates with two symmetrical fan grooves, uses respectively respectively
The contact conductor and signal of coil are extracted in the connection of the contact conductor and ultrasonic-frequency power supply of primary side primary coil, primary side second signal
The connection of processing unit；The primary side primary coil contact conductor is connected with ultrasonic-frequency power supply, provides high-frequency electrical for ultrasound knife handle
Signal, the primary side second signal extract coil electrode lead and are connected with signal processing apparatus, shake for collection analysis ultrasound
Sub- voltage, current signal.
Primary side magnetic core mounting base lower end is equipped with secondary side magnetic core mounting base, installs respectively in the secondary side magnetic core mounting base
There is the secondary electric energy transmission coil in annulus magnetic core, pair；The machine tool chief axis shakes in the lower end of secondary side magnetic core mounting base and ultrasound
Son connection, the contact conductor of the secondary side electric energy transmission coil are connected with ultrasonic vibrator.
Further, the gap between the primary side magnetic core mounting base and secondary side magnetic core mounting base is 0.2~2mm.
Further, the primary side second level magnetic core, primary side primary magnetic core are the identical fan-shaped magnetic core of two sizes, magnetic core fan
Shape angle is 45o~120o, and core material is Ferrite Material, and magnetic core is 1/3~1/8 annulus.
Further, the periphery of the ultrasonic vibrator is coated with knife handle shell.
Further, the ultrasonic vibrator successively includes back shroud, front shroud from top to bottom；The stud of the front shroud
On be successively arranged piezoelectric ceramic piece, electrode slice and back shroud, and be fixed by back shroud.
Further, the front shroud is 2Cr13 stainless steel, and the piezoelectric ceramic piece is PZT-8, the back shroud
For 4Cr13 stainless steel.
Further, in the lower end of front shroud, tool is connect with front shroud by collet and nut.
Further, the front shroud is equipped with the ring flange of connection, and ultrasonic vibrator passes through ring flange and knife handle shell
Connection, and be fixed by gland, ultrasonic vibrator is installed in knife handle shell, is fixed ultrasonic vibrator by gland, ultrasonic vibrator
It is connected and supplies power for secondary side electric energy transmission coil lead.
Further, the bore dia opened on the side cylindrical surface of the primary side magnetic core mounting base is 4mm.
Further, the secondary annular magnet in-core when electric energy transmission coil is encapsulated in secondary with epoxy resin.
The beneficial effect of the present invention and the prior art is:
1) present invention is by the way that primary side second signal extraction coil to be installed in primary side second level magnetic core, coil lead and the signal
Processing unit is connected, for extracting the Dynamic Signals such as voltage, electric current, phase of any time in ultrasonic cutter process；
2) two groups of sector magnetic cores and coil by being integrated in primary side magnetic core mounting base by the present invention, using electromagnetic coupling theory,
Two secondary couplings are formed with secondary side electric energy transmission coil, i.e., in the primary side primary coil of connection ultrasonic-frequency power supply and secondary side magnetic core mounting base
Secondary side electric energy transmission coil form a secondary coupling, electric energy transmission coil and primary side magnetic core are pacified when secondary secondary in magnetic core mounting base
It fills the primary side second signal in seat and extracts coil two secondary couplings of formation, two secondary couplings can be realized the ultrasonic cutter process of extraction
Voltage, the electric current of middle any time, the Dynamic Signals such as phase can monitor cutter vibration in real time suitable for installing and using on lathe
Width and the stability control for realizing cutter amplitude.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of non-contact rotary ultrasonic machining Dynamic Signal extraction element of the present invention；
Fig. 2 is primary side magnetic core mounting base schematic diagram in the present invention；
Fig. 3 is ultrasonic vibrator structural schematic diagram in the present invention；
Figure label explanation: 1. machine tool chief axis, 2. primary side magnetic core mounting bases, 3. primary side second level magnetic cores, 4. primary side primary magnetic cores, 5.
Primary side second signal extracts coil, 6. primary side primary coils, 7. secondary side electric energy transmission coils, 8. secondary side annulus magnetic cores, 9. secondary sides
Magnetic core mounting base, 10. ultrasonic vibrators, 11. knife handle shells, 12. nuts, 13. tools, 14. glands, 15. front shrouds, 16. electrodes
Piece, 17. back shrouds, 18. piezoelectric ceramic pieces.
Specific embodiment
It is clear to keep the purpose of the present invention, technical solution and effect clearer, example is exemplified below to the present invention into one
Step is described in detail.It should be understood that specific implementation described herein is not intended to limit the present invention only to explain the present invention.
As shown in Figure 1, the inventive system comprises machine tool chief axis 1, primary side magnetic core mounting base 2, primary side primary magnetic core 4, originals
Magnetic core mounting base 9, secondary side annulus magnetic core when primary coil 6, primary side second level magnetic core 3, primary side second signal extract coil 5, pair
8, secondary side electric energy transmission coil 7, ultrasonic vibrator 10, knife handle shell 11, gland 14, ultrasonic-frequency power supply and signal processing apparatus.
Specifically, as shown in Fig. 2, being provided with primary side magnetic core mounting base 2, the installation of primary side magnetic core in the periphery of machine tool chief axis 1
2 end faces of seat are set there are two symmetrical fan groove, for installing primary side primary magnetic core 4 and primary side second level magnetic core 3；The installation of primary side magnetic core
It is provided with the hole that diameter is 4mm on the side cylindrical surface of seat 2, is communicated respectively with fan groove, for primary side primary coil 6 and primary side two
The lead connection with ultrasonic-frequency power supply and signal processing apparatus respectively of grade signal extraction coil 5.Primary side primary magnetic core 4 and primary side two
Grade magnetic core 3 is respectively the identical fan-shaped magnetic core of two sizes, and magnetic core fan angle is 45o~120o, and core material is ferrite
Material, and magnetic core is 1/3~1/8 annulus.
As shown in figure 3, ultrasonic vibrator 10 successively includes back shroud 17, front shroud 15 from top to bottom；The front shroud 15
Stud be successively arranged piezoelectric ceramic piece 18, electrode slice 16 and back shroud 17 from upper, and be fixed by back shroud 17.
The front shroud 15 of ultrasonic vibrator 10 is 2Cr13 stainless steel, and piezoelectric ceramic piece 18 is PZT-8, and back shroud 17 is 4Cr13
Stainless steel, 15 stud of front shroud is successively arranged piezoelectric ceramic piece 18, electrode slice 16 and back shroud 17 from upper, and is pressed by back shroud 17
It fastens, front shroud 15 is equipped with the ring flange of connection；Tool 13 is connect using collet and nut 12 with front shroud 15.
Ultrasonic vibrator 10 is fixed with knife handle shell 11 by gland 14 by the ring flange on front shroud 15.Primary side magnetic core
The installation clearance distance of mounting base 2 and secondary side magnetic core mounting base 9 is 0.2~2mm.
Apparatus of the present invention form the operation principles of two secondary couplings are as follows:
When primary side primary coil 6 is motivated by ultrasonic-frequency power supply high frequency electrical signal, primary side primary coil 6 generates the alternation magnetic of high frequency
, just secondary coupling is formed with secondary side electric energy transmission coil 7, produces electricl energy, powers for ultrasonic vibrator 10, band power driven tools 13 generate height
Frequency vibration；Secondary side electric energy transmission coil 7 extracts coil 5 with primary side second signal and forms two secondary couplings, by signal processing apparatus pair
Electric current, the voltage signal that the primary side second signal of two secondary couplings extracts 5 lead of coil are acquired, to monitor cutter amplitude in real time
Provide certain technical support.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as of the invention
Protection scope.
Claims (10)
1. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element, including machine tool chief axis (1), which is characterized in that described
The periphery of machine tool chief axis (1) be provided with primary side magnetic core mounting base (2)；The end face of the primary side magnetic core mounting base (2) is equipped with
Two symmetrical fan grooves are separately installed with primary side second level magnetic core (3), primary side primary magnetic core (4) in two symmetrical fan grooves；
It is packaged with primary side second signal in primary side second level magnetic core (3) and extracts coil (5), at the beginning of being packaged with primary side in primary side primary magnetic core (4)
Grade coil (6)；
It is provided with hole on the side cylindrical surface of the primary side magnetic core mounting base (2), is communicated respectively with two symmetrical fan grooves, point
Not Yong Yu the connection of contact conductor and ultrasonic-frequency power supply of primary side primary coil (6), primary side second signal extract the electrode of coil (5)
The connection of lead and signal processing apparatus；
Described primary side magnetic core mounting base (2) lower end is equipped with secondary side magnetic core mounting base (9), the secondary side magnetic core mounting base
(9) the secondary electric energy transmission coil (7) in annulus magnetic core (8), pair is separately installed in；The machine tool chief axis (1) is in secondary side magnetic
The lower end of core mounting base (9) is connect with ultrasonic vibrator (10), the contact conductor and ultrasound of the secondary side electric energy transmission coil (7)
Oscillator (10) is connected.
2. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element according to claim 1, which is characterized in that institute
Gap between the primary side magnetic core mounting base (2) stated and secondary side magnetic core mounting base (9) is 0.2~2mm.
3. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element according to claim 1, which is characterized in that institute
The primary side second level magnetic core (3) stated, primary side primary magnetic core (4) are the identical fan-shaped magnetic core of two sizes, and magnetic core fan angle is 45o
~120o, core material is Ferrite Material, and magnetic core is 1/3~1/8 annulus.
4. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element according to claim 1, which is characterized in that institute
The periphery for the ultrasonic vibrator (10) stated is coated with knife handle shell (11).
5. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element according to claim 1, which is characterized in that institute
The ultrasonic vibrator (10) stated successively includes back shroud (17), front shroud (15) from top to bottom；The stud of the front shroud (15)
On be successively arranged piezoelectric ceramic piece (18), electrode slice (16) and back shroud (17), and be fixed by back shroud (17).
6. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element according to claim 5, which is characterized in that institute
The front shroud (15) stated is 2Cr13 stainless steel, and the piezoelectric ceramic piece (18) is PZT-8, and the back shroud (17) is
4Cr13 stainless steel.
7. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element according to claim 5, which is characterized in that
Tool (13) is connect by the lower end of front shroud (15) by collet and nut (12) with front shroud 15.
8. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element according to claim 5, which is characterized in that institute
The front shroud (15) stated is equipped with the ring flange of connection, and ultrasonic vibrator (10) is connect by ring flange with knife handle shell (11),
And it is fixed by gland (14).
9. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element according to claim 1, which is characterized in that institute
The bore dia opened on the side cylindrical surface for the primary side magnetic core mounting base (2) stated is 4mm.
10. a kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element according to claim 1, which is characterized in that
In the secondary annulus magnetic core (8) when electric energy transmission coil (7) is encapsulated in secondary with epoxy resin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910062558.5A CN109834521A (en) | 2019-01-23 | 2019-01-23 | A kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element |
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| CN201910062558.5A CN109834521A (en) | 2019-01-23 | 2019-01-23 | A kind of non-contact rotary ultrasonic machining Dynamic Signal extraction element |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561203A (en) * | 2019-08-02 | 2019-12-13 | 浙江大学 | Distributed wireless energy transmission rotary ultrasonic machining device |
| CN110653668A (en) * | 2019-11-29 | 2020-01-07 | 中国科学院宁波材料技术与工程研究所 | Three-dimensional variable-parameter rotary ultrasonic grinding device for hard and brittle materials for automobiles |
| CN111250767A (en) * | 2020-03-27 | 2020-06-09 | 南京航空航天大学 | Variable-frequency ultrasonic vibration machining system for numerical control milling machine |
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| CN110653668A (en) * | 2019-11-29 | 2020-01-07 | 中国科学院宁波材料技术与工程研究所 | Three-dimensional variable-parameter rotary ultrasonic grinding device for hard and brittle materials for automobiles |
| CN111250767A (en) * | 2020-03-27 | 2020-06-09 | 南京航空航天大学 | Variable-frequency ultrasonic vibration machining system for numerical control milling machine |
| CN111250767B (en) * | 2020-03-27 | 2021-07-13 | 南京航空航天大学 | Variable-frequency ultrasonic vibration machining system for numerical control milling machine |
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