CN113858316A - Longitudinal-torsional composite ultrasonic transducer with heat dissipation device - Google Patents
Longitudinal-torsional composite ultrasonic transducer with heat dissipation device Download PDFInfo
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- CN113858316A CN113858316A CN202111322983.7A CN202111322983A CN113858316A CN 113858316 A CN113858316 A CN 113858316A CN 202111322983 A CN202111322983 A CN 202111322983A CN 113858316 A CN113858316 A CN 113858316A
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- heat dissipation
- cover plate
- dissipation device
- longitudinal
- ultrasonic transducer
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 230000007704 transition Effects 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 229920006231 aramid fiber Polymers 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
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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
-
- 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
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
- F28F9/268—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention provides a longitudinal-torsional composite ultrasonic transducer with a heat dissipation device, which comprises a rear cover plate, a piezoelectric ceramic kit, the heat dissipation device, a front cover plate, a detachable cutter and a prestressed bolt. The detachable cutter is connected and arranged at the tail end of the front cover plate through external threads, a spiral oblique round head groove is formed in the middle transition surface of the front cover plate, and a countersunk hole for mounting and positioning and a countersunk thread for connection and fastening are axially formed in the inner side of the top of the front cover plate; the heat dissipation device is arranged between the piezoelectric ceramic external member and the rear cover plate in a matching manner, and the tail part of the rear cover plate is provided with an installation positioning boss. The invention reasonably designs the ultrasonic transducer which converts longitudinal vibration generated by the piezoelectric ceramic external member into longitudinal-torsional composite vibration through the spiral inclined round head groove on the rear cover plate, and designs the heat dissipation device matched with the transducer, thereby improving the processing efficiency of the transducer and ensuring the good working performance of the transducer.
Description
Technical Field
The invention relates to the technical field of ultrasonic transducers, in particular to a longitudinal-torsional composite ultrasonic transducer with a heat dissipation device.
Background
In recent years, with the more and more extensive application of composite materials such as honeycomb aramid fiber type in the fields of national defense industry and aerospace, the composite materials such as the honeycomb aramid fiber type are used as one of difficult-to-process materials, the defects of collapse, burrs, barbs and the like of cells on the processed surface often occur by using the traditional high-speed milling process, meanwhile, the abrasion of a cutter is aggravated, the aging is seriously accelerated, and the processing efficiency is lower. The ultrasonic auxiliary processing technology is proved to be one of the technologies which are more suitable for processing honeycomb aramid fiber type composite materials and the like, and an additional ultrasonic vibration excitation is introduced on the basis of a traditional machine tool, so that a cutter or a workpiece generates ultrasonic vibration, the vibration frequency, the vibration amplitude and the vibration direction of the cutter or the workpiece are controlled, and the cutter generates a processing mode of periodic high-frequency separation.
Compared with the traditional high-speed milling, the ultrasonic auxiliary processing technology effectively reduces the deformation of the material and the generation of burrs due to the instantaneity of ultrasonic cutting, and improves the quality of the processed surface and the processing precision. According to related researches, the single longitudinal or single torsional mode vibration is only in one-dimensional motion mode, so that the processing efficiency of the main shaft of the ultrasonic vibration system is low, and the performance of the ultrasonic auxiliary processing system is seriously wasted. The combination of the longitudinal mode and the torsional mode which combines the two modes together can better exert the performance of the ultrasonic auxiliary processing system, highlight the high efficiency of the honeycomb core removing efficiency and simultaneously obtain better processing surface.
One of the ways to realize the longitudinal-torsional composite ultrasonic vibration is to use two groups of piezoelectric ceramic plates to respectively carry out radial and tangential polarization, thereby respectively generating longitudinal and torsional vibration modes. However, the tangentially polarized piezoelectric ceramic piece has complex process technology, high processing difficulty and low flaking rate, and is difficult to realize industrial scale production technically; meanwhile, the radial polarization piezoelectric ceramic plate and the tangential polarization piezoelectric ceramic plate are difficult to keep resonance on frequency, so that the application of a longitudinal-torsional composite ultrasonic technology is limited to a certain extent.
Disclosure of Invention
Aiming at the problems existing in the technology, the invention aims to solve the problems that: the longitudinal-torsional composite ultrasonic transducer with the heat dissipation device is reasonable and compact in structural design, ingenious in matching, and capable of improving the machining efficiency and guaranteeing good working performance.
The technical means adopted by the invention based on the purpose are as follows: the longitudinal-torsional composite ultrasonic transducer with the heat dissipation device comprises a rear cover plate, a central piezoelectric ceramic piece, a metal electrode piece, the heat dissipation device, a front cover plate, a prestressed bolt, a detachable cutter and a prestressed bolt insulating sleeve, wherein the detachable cutter is arranged at the tail end of the front cover plate through external threads, the heat dissipation device is arranged between the central piezoelectric ceramic piece and the front cover plate, the metal electrode piece and the central piezoelectric ceramic piece are arranged between the rear cover plate in a staggered mode, the prestressed bolt is arranged at the head end of the rear cover plate, and the prestressed bolt insulating sleeve is arranged on the upper portion of a boss of the rear cover plate.
Furthermore, the central piezoelectric ceramic plate and the metal electrode plate respectively comprise four pieces which are arranged in an axially staggered manner.
Furthermore, the heat dissipation device comprises a heat dissipation flange plate and twelve heat dissipation fins, and the heat dissipation fins are circumferentially welded and distributed on the heat dissipation flange plate.
Furthermore, a spiral oblique round head groove is formed in the middle transition surface of the front cover plate, a countersunk hole for mounting and positioning and a countersunk thread for connection and fastening are axially formed in the inner side of the top of the front cover plate, and the spiral angle of the spiral oblique round head groove is 30-60 degrees, preferably 45 degrees.
Furthermore, an assembly cavity matched with the detachable cutter is arranged on the central axis of the tail of the front cover plate, threads are arranged in the assembly cavity, and the detachable cutter is convenient to assemble and replace.
Furthermore, the prestress bolt is provided with a bolt head and a bolt rod part connected with the head, the bolt rod part sequentially penetrates through the rear cover plate, the central piezoelectric ceramic plate, the metal electrode plate and the heat dissipation device and is finally screwed into the front section of the front cover plate through threads, and the prestress is 18-23N.
The boss arranged on the rear cover plate is used for installing and positioning the prestressed bolt insulating sleeve, the central piezoelectric ceramic piece, the metal electrode plate and the heat dissipation device; the inner side of the top of the front cover plate is axially provided with a countersunk hole for mounting and positioning and a countersunk thread for connection and fastening, and a threaded hole arranged at the tail end is used for connecting a detachable cutter; the detachable cutter is used for cutting composite materials such as honeycomb core aramid fiber and the like; the prestressed bolt insulating sleeve is used for insulation protection.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the spiral oblique round head groove is formed on the transition surface in the middle of the front cover plate of the ultrasonic transducer, so that the longitudinal modal vibration part generated only on the piezoelectric ceramic plate polarized in the radial direction is converted into the torsional vibration mode, thus the longitudinal-torsional composite modal vibration is realized, and the processing efficiency is greatly improved.
According to the invention, the heat dissipation device is arranged between the piezoelectric ceramic piece and the front cover plate, so that a large amount of heat generated by the ultrasonic transducer is transferred to the environment through the heat dissipation device, the good working performance of the transducer is ensured, and the processing effect is further ensured.
The ultrasonic transducer front cover plate and the ultrasonic amplitude transformer are integrally designed, the structure is compact, piezoelectric energy is effectively prevented from leaking outwards, the ultrasonic energy is effectively transmitted to the detachable cutter, and the working stability is good.
The invention carries out detachable design on the processing cutter, can replace the processing cutter according to the characteristics of processing materials, has stronger interchangeability and universality and stronger popularization.
Drawings
Fig. 1 is a schematic structural diagram of a longitudinal-torsional composite ultrasonic transducer with a heat dissipation device according to the present invention.
Fig. 2 is a schematic cross-sectional structural view of a longitudinal-torsional composite ultrasonic transducer with a heat dissipation device according to the present invention.
Fig. 3 is a schematic structural distribution diagram of the central piezoelectric ceramic piece and the metal electrode plate.
Fig. 4 is a schematic structural diagram of a heat dissipation device according to the present invention.
Fig. 5 is a schematic structural view of the front cover plate with the spiral oblique round head groove.
1: rear cover plate, 2: central piezoceramic wafer, 3: metal electrode sheet, 4: heat sink, 5: front cover plate, 6: prestressed bolt, 7: detachable cutter, 8: prestressed bolt insulating sleeve, 2-1: piezoelectric ceramic piece, 3-1: metal electrode sheet, 4-1: heat dissipation flange plate, 4-2: cooling fin, 5-1: spiral oblique circular head groove.
Detailed Description
For a better understanding of the present invention, embodiments thereof are further described below with reference to the accompanying drawings.
The embodiment is described with reference to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, a longitudinal-torsional composite ultrasonic transducer with a heat sink includes a back cover plate 1, a central piezoelectric ceramic plate 2, a metal electrode plate 3, a heat sink 4, a front cover plate 5, a pre-stressed bolt 6, a detachable cutter 7, and a pre-stressed bolt insulating sleeve 8, wherein the detachable cutter 7 is connected to the end of the front cover plate 5 through an external thread and is used for cutting composite materials such as honeycomb core aramid fiber, the heat sink 4 is disposed between the central piezoelectric ceramic plate 2 and the front cover plate 5 and includes a heat sink flange 4-1 and twelve heat sinks 4-2, the heat sinks 4-2 are circumferentially welded and distributed on the heat sink flange 4-1, the metal electrode plate 3 and the central piezoelectric ceramic plate 2 are alternately disposed between the back cover plate 1, the novel piezoelectric ceramic plate comprises four piezoelectric ceramic plates and four metal electrode plates, wherein a prestressed bolt 6 is arranged at the head end of a rear cover plate 1, a prestressed bolt insulating sleeve 8 is arranged on the upper part of a boss of the rear cover plate 1, and the prestressed bolt insulating sleeve is used for insulation protection.
The middle transition surface of the front cover plate 5 is provided with a spiral oblique round head groove, the inner side of the top is axially provided with a countersunk hole for mounting and positioning and a countersunk thread for connection and fastening, and the helix angle of the spiral oblique round head groove is 30-60 degrees, preferably 45 degrees.
The central axis of the tail part of the front cover plate 5 is provided with an assembly cavity matched with the detachable cutter 7, and threads are arranged in the assembly cavity, so that the detachable cutter 7 is convenient to assemble and replace.
The prestress bolt 6 is provided with a bolt head and a bolt rod part connected with the head, the bolt rod part sequentially penetrates through the rear cover plate 1, the central piezoelectric ceramic plate 2, the metal electrode plate 3 and the heat dissipation device 4, and finally is screwed into the front section of the front cover plate 5 through threads, and the prestress is 18-23N. When pretightening force is applied, a torque wrench is required to ensure the tight combination with the combination surface of the rear cover plate 1.
Claims (6)
1. A compound ultrasonic transducer of longitudinal torsion with heat abstractor, characterized by, includes: rear shroud (1), central authorities ' piezoceramics piece (2), metal electrode piece (3), heat abstractor (4), front shroud (5), prestressing force bolt (6), detachable cutter (7) and prestressing force bolt insulation support (8), detachable cutter (7) set up through threaded connection the end of front shroud (5), heat abstractor (4) set up between central authorities ' piezoceramics piece (2) and front shroud (5), metal electrode piece (3) with central authorities ' piezoceramics piece (2) crisscross the setting is in between rear shroud (1), prestressing force bolt (6) set up at rear shroud (1) head end, prestressing force bolt insulation support sets up on rear shroud (1) boss upper portion.
2. The longitudinal-torsional composite ultrasonic transducer with the heat dissipation device as set forth in claim 1, wherein: the central piezoelectric ceramic piece (2) and the metal electrode piece (3) respectively comprise four pieces which are arranged in an axially staggered manner.
3. The longitudinal-torsional composite ultrasonic transducer with the heat dissipation device as set forth in claim 1, wherein: the heat dissipation device (4) comprises a heat dissipation flange plate (4-1) and twelve heat dissipation fins (4-2), and the heat dissipation fins (4-2) are circumferentially welded and distributed on the heat dissipation flange plate (4-1).
4. The longitudinal-torsional composite ultrasonic transducer with the heat dissipation device as set forth in claim 1, wherein: the middle transition surface of the front cover plate (5) is provided with a spiral oblique round head groove (5-1), the inner side of the top is axially provided with a countersunk hole for mounting and positioning and a countersunk thread for connection and fastening, and the spiral angle of the spiral oblique round head groove (5-1) is 30-60 degrees.
5. The longitudinal-torsional composite ultrasonic transducer with the heat dissipation device as set forth in claim 1, wherein: the assembly cavity matched with the detachable cutter (7) is formed in the central axis of the tail of the front cover plate (5), threads are arranged in the assembly cavity, and the detachable cutter (7) is convenient to assemble and replace.
6. The longitudinal-torsional composite ultrasonic transducer with the heat dissipation device as set forth in claim 1, wherein: the prestress bolt (6) is provided with a bolt head and a bolt rod part connected with the head, the bolt rod part sequentially penetrates through the rear cover plate (1), the central piezoelectric ceramic plate (2), the metal electrode plate (3) and the heat dissipation device (4), and finally is screwed into the front section of the front cover plate (5) through threads, and the prestress is 18-23N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111322983.7A CN113858316A (en) | 2021-11-10 | 2021-11-10 | Longitudinal-torsional composite ultrasonic transducer with heat dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111322983.7A CN113858316A (en) | 2021-11-10 | 2021-11-10 | Longitudinal-torsional composite ultrasonic transducer with heat dissipation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113858316A true CN113858316A (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111322983.7A Pending CN113858316A (en) | 2021-11-10 | 2021-11-10 | Longitudinal-torsional composite ultrasonic transducer with heat dissipation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114616054A (en) * | 2022-01-28 | 2022-06-10 | 深圳汇芯生物医疗科技有限公司 | Separation device and separation method |
-
2021
- 2021-11-10 CN CN202111322983.7A patent/CN113858316A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114616054A (en) * | 2022-01-28 | 2022-06-10 | 深圳汇芯生物医疗科技有限公司 | Separation device and separation method |
| CN114616054B (en) * | 2022-01-28 | 2023-04-11 | 深圳汇芯生物医疗科技有限公司 | Separation device and separation method |
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