CN112170149A - Dual-mode ultrasonic vibrator for drawing metal wire - Google Patents
Dual-mode ultrasonic vibrator for drawing metal wire Download PDFInfo
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- CN112170149A CN112170149A CN202011160443.9A CN202011160443A CN112170149A CN 112170149 A CN112170149 A CN 112170149A CN 202011160443 A CN202011160443 A CN 202011160443A CN 112170149 A CN112170149 A CN 112170149A
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- ultrasonic vibrator
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- 239000002184 metal Substances 0.000 title claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 28
- 238000005491 wire drawing Methods 0.000 claims abstract description 53
- 239000000919 ceramic Substances 0.000 claims abstract description 34
- 230000007704 transition Effects 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000005284 excitation Effects 0.000 claims description 6
- 230000010287 polarization Effects 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
- B06B1/0662—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B3/02—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency involving a change of amplitude
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/006—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing using vibratory energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
Abstract
The invention discloses a dual-mode ultrasonic vibrator for drawing a metal wire, belongs to the technical field of ultrasonic vibrators, and solves the problems that an ultrasonic wire drawing vibrator is complex to install and manufacture, a ceramic chip is fragile, and the application of an industrial scene is difficult. The invention comprises an amplitude transformer, an energy converter and a wire drawing die which are arranged on the amplitude transformer; the transducer comprises a front end cover, a rear end cover, an even number of piezoelectric ceramics arranged between the front end cover and the rear end cover, and electrode plates arranged between the piezoelectric ceramics and the front end cover and the rear end cover respectively, wherein the front end cover is connected with the amplitude transformer; the center of the amplitude transformer is provided with a through hole, the amplitude transformer comprises a transition region and wire drawing die mounting regions arranged at two ends of the filtering region along the length direction of the through hole; two wire drawing die mounting areas at two ends of the through wire hole are respectively provided with a wire drawing die, and the two wire drawing dies are mounted in the same direction; and more than two transducers are arranged on the outer side wall of the transition region. The invention is used for drawing the metal wire.
Description
Technical Field
A dual-mode ultrasonic vibrator for metal wire drawing is used for metal wire drawing and belongs to the technical field of ultrasonic vibrators.
Background
At present, metal wires with the diameter less than 8mm are generally produced by adopting a traditional ultrasonic drawing mode. However, some materials which are difficult to process have low drawing speed which is lower than 0.3m/s due to high strength and high hardness, frequent wire breakage and low efficiency in the drawing process, and the drawn wire has poor surface quality and low dimensional precision. In order to obtain high-performance wire materials, hot drawing is needed in the drawing process, the hot drawing size precision is poor, cracks are easy to appear in drawing, and multiple size calibration and surface polishing are often needed after drawing.
In order to solve the technical problems, in the prior art, the metal wire is drawn by an ultrasonic vibrator, the ultrasonic vibration drawing of the metal wire is a processing technology of superposing ultrasonic vibration energy in the conventional wire drawing process, alternating electric signals generated by an ultrasonic driver are converted into ultrasonic vibration energy by a piezoelectric ceramic piece, and the ultrasonic vibration energy is transmitted to a wire drawing die, so that the vibration of the wire drawing die and the metal wire is excited, and the effect of the ultrasonic vibration energy on plastic forming of a metal material is further obtained.
The ultrasonic vibrator is a device, also called ultrasonic vibrator, and the whole body formed by connecting the transducer and the amplitude transformer is called a vibrator.
The transducer is a device which realizes the mutual conversion of electric energy and mechanical energy (sound wave vibration) by the piezoelectric effect of piezoelectric ceramics and amplifies through front and rear radiation cover blocks matched with acoustic impedance.
Because the amplitude transformer is a passive device, the amplitude transformer does not generate vibration, only changes the amplitude of the input vibration and then transmits the vibration, and the amplitude transformation is completed.
The ultrasonic transducer can generate regular vibration under the excitation of an electric field, but the amplitude is generally about 10 μm, and the amplitude is not enough to directly complete the welding and processing procedures.
Thus, after the transducer is connected with a properly designed amplitude transformer, the amplitude of the ultrasonic wave can be changed in a large range, and can exceed 100 μm as long as the material strength is enough.
When the amplitude transformer does longitudinal stretching vibration, the particle motion directions of the left side and the right side of a certain cross section in the middle of the amplitude transformer are just opposite, which is equivalent to that a relatively static nodal plane exists. The nodal plane is called a node and is also the best fixing point of the vibrator, and the deviation from the node fixing reduces the working efficiency of the vibrator, namely leakage wave.
In the prior art, the technology of drawing a metal wire by adopting ultrasound is quite rare, and a related technology 'CN 106452162A-a patch type clamped beam type orthogonal composite ultrasonic wire drawing vibrator' is searched, wherein the ultrasonic wire drawing vibrator in the technology adopts a patch type structure, but has the following defects:
the ceramic plates are made of hard and brittle materials, are extremely fragile in small thickness and are difficult to apply in industrial scenes;
secondly, the ultrasonic energy output by the vibrator is small, the strength and the rigidity are weak, and the excitation is complex;
and thirdly, the method cannot be used for processing wire rods with the diameter of more than 0.2 mm.
Disclosure of Invention
The invention aims to provide a dual-mode ultrasonic vibrator for drawing a metal wire, which solves the problems that the ultrasonic wire drawing vibrator is complex to install and manufacture, a ceramic plate is fragile, the application of an industrial scene is difficult, a single longitudinal wave is adopted, the ultrasonic energy output by the vibrator is small, the intensity rigidity is weak, the excitation is simple and the like.
In order to achieve the purpose, the invention adopts the technical scheme that:
a dual-mode ultrasonic vibrator for drawing a metal wire comprises an amplitude transformer, an energy converter and a wire drawing die, wherein the energy converter and the wire drawing die are arranged on the amplitude transformer;
the center of the amplitude transformer is provided with a through hole, the amplitude transformer comprises a transition region and wire drawing die mounting regions arranged at two ends of the filtering region along the length direction of the through hole;
two wire drawing die mounting areas at two ends of the through wire hole are respectively provided with a wire drawing die, and the two wire drawing dies are mounted in the same direction;
and more than two transducers are arranged on the outer side wall of the transition region.
Furthermore, wire drawing die mounting areas are symmetrically arranged at two ends of the filtering area.
Furthermore, at least three transducers are arranged on the transition region of the amplitude transformer, and the transducers are uniformly distributed on the transition region by taking the axis of the amplitude transformer as a central shaft.
Further, the transition area is a cone face, an index face or a step face.
Further, a flange used for fixing the dual-mode ultrasonic vibrator is arranged in the middle of the front end cover.
Further, the front end cover, the even number of piezoelectric ceramics and the rear end cover are fixed through pretightening screws; the transducer is connected with the amplitude transformer through a double-end stud; the wire drawing die is connected with the amplitude transformer through threads.
Furthermore, the thickness of the electrode plate is more than 0.2mm, and the electrode plate is made of conductive materials which are difficult to generate heat.
Further, the rear end cover is made of a high-density metal material;
when the load change of the front end cover is large, a conical rod is adopted; when the load is stable and the power requirement is high, a step rod is adopted;
the quantity of the piezoelectric ceramics is determined according to power, and each piezoelectric ceramics is excited by high-frequency alternating voltage signals with equal amplitude and polarized along the thickness direction; the polarization polarities of the adjacent two pieces of piezoelectric ceramics are opposite, and the piezoelectric ceramics work in a D33 mode.
Further, the wire drawing die is a polycrystalline wire drawing die.
Furthermore, the excitation frequency of the dual-mode ultrasonic vibrator is equal to the minimum impedance frequency of the vibrator, the effective value of the driving voltage is not more than 200V, and the dual-mode ultrasonic vibrator works in a low-voltage driving mode.
Compared with the prior art, the invention has the advantages that:
the ultrasonic vibrator adopted by the invention is of a brand-new structure, and is provided with the double wire drawing dies, the wire drawing dies are fixed at two ends of the amplitude transformer through threads and are installed in the same direction, and the vibration directions are always opposite when the amplitude transformer vibrates, so that the obtained double-mode ultrasonic vibrator is simple in driving power supply, can realize 180-degree phase difference of the wire drawing dies without phase control, and can be used for processing metal wires with the diameter of more than 0.2 mm;
the double-wire drawing die structure is adopted, so that double-die continuous drawing can be realized, and the production efficiency is effectively improved; compared with single-mode ultrasonic drawing, the processing efficiency is improved by 100%.
The invention adopts an energy-gathering structure, namely a plurality of transducers are arranged along the circumference of the amplitude transformer, the oscillator power can reach 3000w, the intensity is high, the rigidity is high, and the high-intensity wire drawing device can be used for drawing high-intensity wires;
the invention adopts ultrasonic wave assistance, the wire drawing precision is improved, and the service life of the wire drawing die is prolonged by 30 percent;
fifthly, the continuous drawing of the difficult-to-process material is realized by adopting ultrasonic assistance;
sixth, the electrode plate in the invention is more than 0.2mm, in order to prevent that the electrode plate is too thin, and the welding and fixing of the lead are easily influenced, namely the electrode plate is not enough in rigidity and cannot effectively weld and fix the lead.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1 in accordance with the present invention;
FIG. 3 is a top view of a horn according to the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic view of the polarization mode of the piezoelectric ceramic plate according to the present invention;
FIG. 6 is a schematic elongation of the horn of FIGS. 3 and 4 in accordance with the present invention;
FIG. 7 is a schematic view of the contraction of a horn in accordance with the present invention;
fig. 8 is an impedance curve of a transducer of the present invention.
In the figure: 1-transducer, 1-1-rear end cover, 1-2-pre-tightening screw, 1-3-piezoelectric ceramic, 1-4-front end cover, 1-5-flange, 2-amplitude transformer, 2-2-through hole, 3-wire drawing die and 4-double-end stud.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," "third," and the like, if any, are only used to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
As shown in fig. 1 and 2, the dual-mode ultrasonic vibrator for drawing the metal wire comprises a horn 2, a transducer 1 arranged on the horn 2 and a wire drawing die 3.
The transducer 1 comprises front end covers 1-4, a rear end cover 1-1, an even number of piezoelectric ceramics 1-3 arranged between the front end covers 1-4 and the rear end cover 1-1, and electrode plates arranged between the piezoelectric ceramics 1-3 and the front end covers 1-4 and the rear end cover 1-1 respectively.
The front end covers 1-4 are connected with the amplitude transformer 2 through the double-end stud 4, and of course, other structures can be adopted for fixing; the front end cover 1-4, the even number of piezoelectric ceramics 1-3 and the rear end cover 1-1 are fixed through the pre-tightening screws 1-2, the pre-tightening screws 1-2 fix the front end cover 1-4, the even number of piezoelectric ceramics 1-3 and the rear end cover 1-1, and meanwhile electrode plates arranged between the piezoelectric ceramics 1-3 and the front end cover 1-4 and the rear end cover 1-1 are also fixed, and certainly, other structures can be adopted for fixing.
The electrode plate has a thickness of 0.2mm or more, such as 0.3mm, 0.4mm, 0.5mm, etc., and is made of conductive material which is not easy to generate heat, such as red copper, etc.; the rear end cover 1-1 is made of a high-density metal material such as quenched and tempered steel; when the load variation of the front end covers 1-4 is large, a conical rod is adopted; when the load is stable and the power requirement is high, the step rod is adopted.
The number of the piezoelectric ceramics 1-3 is determined according to power and needs to be even, when the piezoelectric ceramics are odd-numbered in the polarization mode, the piezoelectric ceramics cannot work, such as 2 pieces, 4 pieces or 6 pieces, the more the pieces are, the larger the output power is, the larger the nonuniformity is, so the optimal value is 4 pieces, and each piezoelectric ceramic 1-3 is excited by a high-frequency alternating-current voltage signal with equal amplitude and is polarized along the thickness direction, as shown in fig. 5; the polarization polarities of the adjacent two pieces of piezoelectric ceramics are opposite, and the piezoelectric ceramics 1-3 work in a D33 mode. The piezoelectric ceramics 1-3 are excited by high-frequency (more than 20kHz) alternating voltage signals with equal amplitude, and high-frequency axial mechanical vibration is generated through the inverse piezoelectric effect of the piezoelectric ceramics 1-3 polarized in the thickness direction, so that the ultrasonic vibration of the wire drawing die 3 is realized.
As shown in fig. 3, 4, 6 and 7, a through hole 2-2 is formed in the center of the amplitude transformer 2, the amplitude transformer 2 includes a transition region, and wire drawing die mounting regions are symmetrically arranged at two ends of the filtering region along the length direction of the through hole 2-2, and the transition region is a cone face, an index face or a step face, and other structures capable of realizing corresponding functions.
Two wire drawing die mounting areas at two ends of the through wire hole 2-2 are respectively provided with a wire drawing die, the two wire drawing dies are mounted in the same direction, the wire drawing die 3 is in threaded connection with the amplitude transformer 2, and the wire drawing die is a polycrystalline wire drawing die.
More than two transducers 1 are arranged on the outer side wall of the transition region. If three transducers 1, four transducers 1 and the like are provided, the optimal arrangement mode is that at least three transducers are arranged on the transition region of the amplitude transformer, and the transducers are uniformly distributed on the amplitude transformer by taking the axis of the amplitude transformer as a central shaft, as shown in fig. 1 and 2.
The purpose of arranging the flanges and arranging the flanges is to prevent the dual-mode ultrasonic vibrator from being incapable of working because the flanges are not installed or/and the installation points are selected unreasonably, and certainly, the flanges are not replaced by other fixed structures.
As shown in fig. 8, the excitation frequency of the obtained dual-mode ultrasonic vibrator is equal to the minimum impedance frequency of the vibrator, the effective value of the driving voltage is not greater than 200V, and the dual-mode ultrasonic vibrator operates in a low-voltage driving mode.
Examples
In the metal wire drawing process, the dual-mode ultrasonic vibrator for drawing the metal wire is installed on a base station in a matched mode through a clamp and a flange, after the installation is completed, the metal wire sequentially penetrates through two wire drawing dies through a wire through hole, after the metal wire penetrates through the wire through hole, the dual-mode ultrasonic vibrator is started, the metal wire is processed through the dual-mode ultrasonic vibrator, the longitudinal vibration of the two wire drawing dies of the dual-mode ultrasonic vibrator always keeps a phase difference of 180 degrees in the processing process, namely, the ultrasonic drawing processing of two continuous modes is realized, and finally high-quality drawn wires are obtained.
Claims (10)
1. The utility model provides a bimodulus ultrasonic vibrator for wire is drawn, includes amplitude transformer (2), and transducer (1) and wire drawing mould (3) that set up on amplitude transformer (2), its characterized in that:
the transducer (1) comprises front end covers (1-4), a rear end cover (1-1), even piezoelectric ceramics (1-3) arranged between the front end covers (1-4) and the rear end cover (1-1), and electrode plates arranged between the piezoelectric ceramics (1-3) and the front end covers (1-4) and the rear end cover (1-1), respectively, wherein the front end covers (1-4) are connected with an amplitude transformer (2);
the center of the amplitude transformer (2) is provided with a through hole (2-2), the amplitude transformer (2) comprises a transition area and wire drawing die mounting areas arranged at the two ends of the filtering area along the length direction of the through hole (2-2);
two wire drawing die mounting areas at two ends of the through wire hole (2-2) are respectively provided with a wire drawing die, and the two wire drawing dies are mounted in the same direction;
more than two transducers (1) are arranged on the outer side wall of the transition region.
2. The dual-mode ultrasonic vibrator for drawing a metal wire as claimed in claim 1, wherein: and wire drawing die mounting areas are symmetrically arranged at two ends of the filtering area.
3. The dual-mode ultrasonic vibrator for drawing a metal wire as claimed in claim 2, wherein: the transformer is characterized in that at least three transducers (1) are arranged on a transition region of the amplitude transformer (2), and the transducers are uniformly distributed on the transition region by taking the axis of the amplitude transformer as a central shaft.
4. The dual-mode ultrasonic vibrator for drawing a metal wire as claimed in claim 3, wherein: the transition area is a cone face, an index face or a step face.
5. A dual mode ultrasonic vibrator for drawing a wire according to any one of claims 1 to 4, wherein: and a flange (1-5) for fixing the dual-mode ultrasonic vibrator is arranged in the middle of the front end cover (1-4).
6. The dual-mode ultrasonic vibrator for drawing a metal wire as claimed in claim 5, wherein: the front end cover (1-4), the even number of piezoelectric ceramics (1-3) and the rear end cover (1-1) are fixed through pretightening screws (1-2); the energy converter (1) is connected with the amplitude transformer (2) through a double-end stud (4); the wire drawing die (3) is in threaded connection with the amplitude transformer (2).
7. The dual-mode ultrasonic vibrator for drawing a metal wire as claimed in claim 6, wherein: the thickness of the electrode plate is more than 0.2mm, and the electrode plate is made of conductive materials which are not easy to generate heat.
8. The dual-mode ultrasonic vibrator for drawing a metal wire as claimed in claim 6, wherein: the rear end cover (1-1) is made of a high-density metal material;
when the load variation of the front end covers (1-4) is large, a conical rod is adopted; when the load is stable and the power requirement is high, a step rod is adopted;
the quantity of the piezoelectric ceramics (1-3) is determined according to power, and each piezoelectric ceramics (1-3) is excited by adopting high-frequency alternating voltage signals with equal amplitude and polarized along the thickness direction; the polarization polarities of the adjacent two pieces of piezoelectric ceramics (1-3) are opposite, and the piezoelectric ceramics (1-3) work in a D33 mode.
9. The dual-mode ultrasonic vibrator for drawing a metal wire as claimed in claim 1, wherein: the wire drawing die is a polycrystalline wire drawing die.
10. The dual-mode ultrasonic vibrator for drawing a metal wire as claimed in claim 8, wherein: the excitation frequency of the dual-mode ultrasonic vibrator is equal to the minimum impedance frequency of the vibrator, the effective value of the driving voltage is not more than 200V, and the dual-mode ultrasonic vibrator works in a low-voltage driving mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160443.9A CN112170149A (en) | 2020-10-27 | 2020-10-27 | Dual-mode ultrasonic vibrator for drawing metal wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160443.9A CN112170149A (en) | 2020-10-27 | 2020-10-27 | Dual-mode ultrasonic vibrator for drawing metal wire |
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| CN112170149A true CN112170149A (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588526A (en) * | 2022-03-30 | 2022-06-07 | 中南大学 | Double-frequency ultrasonic microneedle array device |
-
2020
- 2020-10-27 CN CN202011160443.9A patent/CN112170149A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588526A (en) * | 2022-03-30 | 2022-06-07 | 中南大学 | Double-frequency ultrasonic microneedle array device |
| CN114588526B (en) * | 2022-03-30 | 2023-08-22 | 中南大学 | Dual-frenquency supersound microneedle array device |
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Effective date of registration: 20210210 Address after: 641000 no.300-79 Qingyuan street, Qingyuan community, Shuangqiao Township, Dongxing District, Neijiang City, Sichuan Province Applicant after: Xiong Dashan Address before: 610073 No.6, building 1, building 206, No.51, Weiyi Road, Huangtianba, Qingyang District, Chengdu City, Sichuan Province Applicant before: Li Hongliang |
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