CN109604132B - Double-rod type giant magnetostrictive ultrasonic vibration device - Google Patents
Double-rod type giant magnetostrictive ultrasonic vibration device Download PDFInfo
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- CN109604132B CN109604132B CN201811452429.9A CN201811452429A CN109604132B CN 109604132 B CN109604132 B CN 109604132B CN 201811452429 A CN201811452429 A CN 201811452429A CN 109604132 B CN109604132 B CN 109604132B
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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
- B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
- B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
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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
- 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
Abstract
The invention discloses a double-rod type giant magnetostrictive ultrasonic vibration device which comprises a knife handle, wherein the lower end of the knife handle is sequentially connected with an amplitude transformer and a tool head, a cavity is arranged at the lower part of the knife handle, a giant magnetostrictive transducer is arranged in the cavity, a sealing bearing, an elastic retainer ring and a sleeve are arranged on the outer side wall of the knife handle, the elastic retainer ring and the sleeve fix the sealing bearing, a shell is arranged outside the sealing bearing, an upper end cover and a lower end cover are respectively arranged at the upper end and the lower end of the shell, a primary winding and a secondary winding are also arranged outside the knife handle, and the primary winding and the secondary winding are sequentially positioned below the shell. The invention solves the problem of magnetic flux leakage of the giant magnetostrictive transducer.
Description
Technical Field
The invention belongs to the technical field of ultrasonic processing, and relates to a double-rod type giant magnetostrictive ultrasonic vibration device.
Background
The rotary ultrasonic processing is based on the traditional ultrasonic processing, and adds ultrasonic frequency mechanical vibration, thereby effectively reducing cutting force, reducing cutter abrasion, improving material removal efficiency, improving processing quality, and particularly having good processing effect on difficult-to-process materials.
In the technical field of ultrasonic processing, mainly used ultrasonic transducer materials comprise piezoelectric ceramics and giant magnetostrictive materials. The power density of the piezoelectric ceramic is relatively low, and the piezoelectric ceramic has the defects of overheating failure, fragility and the like. The giant magnetostrictive material has the advantages of large magnetostrictive strain, high energy density, high response speed and the like, and is a research direction with high power and large amplitude.
At present, most of driving elements of the giant magnetostrictive transducer are single giant magnetostrictive rods, the single rod type transducer needs to apply magnetic materials on two sides of the giant magnetostrictive rods to form a closed magnetic circuit, and due to the fact that gaps exist in the magnetic circuit, great magnetic leakage can be generated, the performance of the transducer is limited, and the utilization rate of materials is reduced. The non-contact energy transmission device usually adopts ferrite as a magnetic conductive material, but the ferrite is fragile and easy to damage, and the traditional processing method is difficult to process, so that the manufacturing cost of the non-contact energy transmission device is greatly increased.
Disclosure of Invention
The invention aims to provide a double-rod type giant magnetostrictive ultrasonic vibration device, which solves the problem of magnetic flux leakage of the conventional giant magnetostrictive transducer.
The invention adopts the technical scheme that the double-rod type giant magnetostrictive ultrasonic vibration device comprises a cutter handle, wherein the lower end of the cutter handle is sequentially connected with an amplitude transformer and a tool head, a cavity is arranged at the lower part of the cutter handle, a giant magnetostrictive transducer is arranged in the cavity, the giant magnetostrictive transducer comprises two groups of giant magnetostrictive rods, each group of the giant magnetostrictive rods is formed by connecting a plurality of sections of giant magnetostrictive rods, a permanent magnet B is arranged between every two adjacent sections of the giant magnetostrictive rods, both ends of each group of the giant magnetostrictive rods are provided with magnetizers with slice-type structures, a permanent magnet A and a giant magnetostrictive rod are arranged between the magnetizers positioned at the same end side of the two groups of the giant magnetostrictive rods, the magnetizer and the permanent magnet A form a closed magnetic circuit, an excitation coil is wound on the giant magnetostrictive rod and connected with the secondary winding, and the giant magnetostrictive transducer and the amplitude transformer are fixed through a pre-tightening bolt;
the outer side wall of the knife handle is provided with a sealing bearing, an elastic retainer ring and a sleeve, the elastic retainer ring and the sleeve fix the sealing bearing, a shell is arranged outside the sealing bearing, an upper end cover and a lower end cover are arranged at the upper end and the lower end of the shell respectively, a primary winding and a secondary winding are further arranged outside the knife handle, and the primary winding and the secondary winding are sequentially located below the shell.
The present invention is also characterized in that,
the primary winding comprises a primary coil, a primary magnetic core and a primary skeleton which are sequentially arranged from inside to outside, the inner wall of the primary skeleton is not contacted with the tool shank, the primary skeleton, the lower end cover and the shell are fixed through countersunk screws, the secondary winding comprises a secondary coil, a secondary magnetic core and a secondary skeleton which are sequentially arranged from inside to outside, the secondary coil is connected with the excitation coil through leads, a plurality of uniformly distributed air outlet holes are formed in the lower end of the secondary skeleton, the amplitude transformer, the secondary skeleton and the tool shank are connected through screws B, and a gap is formed between the primary winding and the secondary winding.
The primary side magnetic core and the secondary side magnetic core are both formed by laminating multiple layers of flaky magnetic conducting materials through insulating glue.
The upper surface of the upper end cover is provided with a stop piece, and the shell, the upper end cover and the stop piece are fixed together through a screw A.
The shell is connected with an air inlet pipe, and the air inlet pipe is communicated with the cavity of the knife handle.
The permanent magnet B is connected with the super magnetostrictive rod, the magnetizer is connected with the permanent magnet A and each magnetizer through insulating glue.
And a protective sheet is arranged between the giant magnetostrictive rod and the exciting coil.
The amplitude transformer (2) is a composite amplitude transformer with a taper transition step shape.
The invention has the beneficial effects that: the features of the apparatus of the invention are explained structurally
(1) The magnetostrictive transducer is a double-rod type giant magnetostrictive transducer, the giant magnetostrictive rod, the permanent magnet and the upper and lower magnetizers form a closed magnetic circuit, and compared with the traditional single-rod type transducer, magnetic yokes do not need to be applied to two sides of the rod to form a closed magnetic circuit, so that the structure of the transducer is simplified, the magnetic leakage is reduced, and the energy loss is reduced;
(2) a certain gap is formed between the primary winding and the secondary winding, a gasket can be added between the lower end of the cutter handle and the amplitude transformer to adjust the gap between the primary winding and the secondary winding, and the primary winding 8 and the secondary winding 9 are arranged on the cutter handle, so that repeated adjustment after the primary winding is detached every time is avoided.
(3) The magnetic cores of the primary winding and the secondary winding are made of laminated sheet-shaped magnetic conductive materials, so that the cost is reduced; the conical transition stepped composite amplitude transformer can realize larger amplification amplitude and reduce the axial size; be equipped with sealed bearing, circlip and sleeve on the lateral wall of handle of a knife, sealed bearing is provided with the shell outward, is equipped with the intake pipe on the shell, establishes the inlet port on the handle of a knife, adopts the air cooling system to cool off giant magnetostrictive transducer, can effectually reduce generating heat of giant magnetostrictive transducer in the actual processing.
Drawings
FIG. 1 is a schematic structural view of a dual-rod type giant magnetostrictive ultrasonic vibration device according to the present invention;
FIG. 2 is a schematic structural diagram of a primary winding and a secondary winding in a dual-rod giant magnetostrictive ultrasonic vibration device according to the present invention;
fig. 3 is a schematic structural view of a giant magnetostrictive transducer in a dual-rod type giant magnetostrictive ultrasonic vibration device according to the present invention, wherein fig. 3(a) is a front view of the giant magnetostrictive transducer in the dual-rod type giant magnetostrictive ultrasonic vibration device according to the present invention, and fig. 3(b) is a left side view of the giant magnetostrictive transducer in the dual-rod type giant magnetostrictive ultrasonic vibration device according to the present invention.
In the figure, 1, a cutter handle, 2, an amplitude transformer, 3, a tool head, 4, a seal bearing, 5, a shell, 6, an upper end cover, 7, a lower end cover, 8, a primary winding, 9, a secondary winding, 10, a giant magnetostrictive rod, 11, a magnetizer, 12, a permanent magnet A, 13, an exciting coil, 14, a stop piece, 15, an air inlet pipe, 16, a primary coil, 17, a primary magnetic core, 18, a primary framework, 19, a secondary coil, 20, a secondary magnetic core, 21, a secondary framework, 22, a permanent magnet B, 23, a rear cover plate, 24, a pre-tightening bolt, 25, a protective sheet, 26, an elastic retainer ring, 27, a sleeve, 28, a lead, 29, a screw A, 30 and a screw B are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses a double-rod type giant magnetostrictive ultrasonic vibration device, which comprises a knife handle 1, wherein the lower end of the knife handle 1 is sequentially connected with an amplitude transformer 2 and a tool head 3, the amplitude transformer 2 is a composite amplitude transformer with a conical transition step shape, the lower part of the knife handle 1 is provided with a cavity, a giant magnetostrictive transducer is arranged in the cavity, the outer side wall of the knife handle 1 is provided with a sealing bearing 4, an elastic retainer ring 26 and a sleeve 27, the sealing bearing 4 is fixed by the elastic retainer ring 26 and the sleeve 27, the outer part of the sealing bearing 4 is provided with a shell 5, the upper end cover 6 and the lower end cover 7 are respectively arranged at the upper end and the lower end of the shell 5, the outer side of the knife handle 1 is also provided with a primary winding 8 and a secondary winding 9, and the primary winding 8 and the.
The upper surface of the upper end cover 6 is provided with a stop piece 14, and the shell 5, the upper end cover 6 and the stop piece 14 are fixed together through a screw A29. The shell 5 is connected with an air inlet pipe 15, and the air inlet pipe 15 is communicated with the cavity of the knife handle 1.
As shown in fig. 2, the primary winding 8 comprises a primary coil 16, a primary magnetic core 17 and a primary skeleton 18 which are arranged in sequence from inside to outside, the inner wall of the primary skeleton 18 is not contacted with the handle 1, the primary skeleton 18, the lower end cover 7 and the shell 5 are fixed together through countersunk screws, the secondary winding 9 comprises a secondary coil 19, a secondary magnetic core 20 and a secondary skeleton 21 which are arranged in sequence from inside to outside, the secondary coil 19 is connected with the exciting coil 13 through a lead 28, the lower end of the secondary skeleton 21 is provided with a plurality of uniformly distributed air outlet holes, the amplitude transformer 2, the secondary skeleton 21 and the handle 1 are connected through screws B30, a gap is formed between the primary winding 8 and the secondary winding handle 9, the gap between the primary winding 8 and the secondary winding handle 9 can be adjusted by adding a gasket between the lower end of the amplitude transformer 1 and the amplitude transformer 2, the primary winding 8 and the secondary winding 9 are both arranged on the handle 1, repeated adjustment of the primary winding 8 after each disassembly is avoided. The primary side magnetic core 17 and the secondary side magnetic core 20 are made of multiple layers of sheet-shaped magnetic conducting materials through insulation paste lamination, so that eddy current can be reduced, and cost is reduced.
As shown in fig. 3, the giant magnetostrictive transducer includes two groups of giant magnetostrictive rods 10, each group of giant magnetostrictive rods 10 is formed by connecting multiple sections of giant magnetostrictive rods 10, a permanent magnet B22 is disposed between every two adjacent sections of giant magnetostrictive rods 10, two ends of each group of giant magnetostrictive rods 10 are both provided with magnetizers 11 having a slice structure, a permanent magnet a12 is disposed between the magnetizers 11 located at the same end side of the two groups of giant magnetostrictive rods 10, the magnetizers 11 and the permanent magnet a12 form a closed magnetic circuit, an excitation coil 13 is wound on the giant magnetostrictive rod 10, and a protective sheet 25 is disposed between the giant magnetostrictive rod 10 and the excitation coil 13 to prevent the lead 28 of the excitation coil 13 from being worn off due to friction vibration at the edge. The upper end of the giant magnetostrictive transducer is provided with a rear cover plate 23, the giant magnetostrictive transducer and the amplitude transformer 2 are fixed through a pretightening bolt 24 on the rear cover plate 23, and the permanent magnet B22 is connected with the giant magnetostrictive rod 10, the magnetizer 11 is connected with the permanent magnet A12, and each magnetizer 11 through insulating glue.
The working principle of the double-rod type giant magnetostrictive ultrasonic vibration device is as follows:
the pre-tightening bolt 24 is adjusted to enable the giant magnetostrictive rod 10 to be in a compression state, the ultrasonic generator is connected with the primary coil, electric energy is transmitted from the primary winding 8 to the secondary winding 9 through electromagnetic induction, the secondary coil 19 transmits the electric energy to the giant magnetostrictive transducer, the giant magnetostrictive transducer generates ultrasonic vibration, and the amplitude transformer 2 amplifies the ultrasonic vibration. When the invention works, cooling gas is input through the air inlet pipe 15 to cool the giant magnetostrictive transducer, and the gas is discharged through the air outlet hole, so that the sealed bearing 4 plays a role in preventing the cooling gas from leaking.
Claims (5)
1. The utility model provides a two excellent types of super magnetostrictive ultrasonic vibration device, a serial communication port, including handle of a knife (1), handle of a knife (1) lower extreme has connected gradually amplitude transformer (2) and instrument head (3), handle of a knife (1) lower part is provided with the cavity, be provided with super magnetostrictive transducer in the cavity, super magnetostrictive transducer includes two sets of super magnetostrictive rods (10), every group super magnetostrictive rod (10) are connected by multistage super magnetostrictive rod (10) and are constituteed, every adjacent two sections be provided with permanent magnet B (22) between super magnetostrictive rod (10), every group super magnetostrictive rod (10) both ends all are provided with magnetizer (11) of cutting the piece formula structure, are located two sets of be provided with permanent magnet A (12) between super magnetostrictive rod (10) same distolateral magnetizer (11), two sets of super magnetostrictive rod (10), A closed magnetic circuit is formed by a magnetizer (11) and a permanent magnet A (12), an excitation coil (13) is wound on each group of the giant magnetostrictive rod (10), a protective sheet (25) is arranged between each group of the giant magnetostrictive rod (10) and the excitation coil (13), the excitation coil (13) is connected with a secondary winding (9), and the giant magnetostrictive transducer is fixed with an amplitude transformer (2) through a pre-tightening bolt (24);
the outer side wall of the knife handle (1) is provided with a sealing bearing (4), an elastic check ring (26) and a sleeve (27), the elastic check ring (26) and the sleeve (27) fix the sealing bearing (4), a shell (5) is arranged outside the sealing bearing (4), an upper end cover (6) and a lower end cover (7) are respectively arranged at the upper end and the lower end of the shell (5), a stop piece (14) is arranged on the upper surface of the upper end cover (6), the shell (5), the upper end cover (6) and the stop piece (14) are fixed through a screw A (29), a primary winding (8) and a secondary winding (9) are further arranged outside the knife handle (1), and the primary winding (8) and the secondary winding (9) are sequentially located below the shell (5);
primary side winding (8) are including primary side coil (16), primary side magnetic core (17) and primary side skeleton (18) that set gradually from inside to outside, primary side skeleton (18) inner wall does not contact with handle of a knife (1), fixes primary side skeleton (18), lower end cover (7), shell (5) through the countersunk screw, secondary side winding (9) are including secondary side coil (19), secondary side magnetic core (20) and secondary side skeleton (21) that set gradually from inside to outside, secondary side coil (19) are connected through lead wire (28) with excitation coil (13), secondary side skeleton (21) lower extreme is provided with a plurality of ventholes of evenly laying, will become width of cloth pole (2), secondary side skeleton (21) and handle of a knife (1) and connect through screw B (30), primary side winding (8) and secondary side winding (9) between have the clearance.
2. The dual bar type giant magnetostrictive ultrasonic vibration device according to claim 1, wherein the primary core (17) and the secondary core (20) are each laminated of a plurality of layers of magnetic sheet-like materials by means of insulating paste.
3. The double-rod type giant magnetostrictive ultrasonic vibration device according to claim 1, characterized in that the housing (5) is connected with an air inlet pipe (15), and the air inlet pipe (15) is communicated with the cavity of the tool shank (1).
4. The dual-rod type giant magnetostrictive ultrasonic vibration device according to claim 1, wherein the permanent magnet B (22) is bonded to each segment of the giant magnetostrictive rod (10), the magnetizer (11) is bonded to the permanent magnet a (12), and each magnetizer (11) by an insulating adhesive.
5. The dual-rod type giant magnetostrictive ultrasonic vibration device according to claim 1, characterized in that the horn (2) is a composite horn having a tapered transition step shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811452429.9A CN109604132B (en) | 2018-11-30 | 2018-11-30 | Double-rod type giant magnetostrictive ultrasonic vibration device |
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| CN201811452429.9A CN109604132B (en) | 2018-11-30 | 2018-11-30 | Double-rod type giant magnetostrictive ultrasonic vibration device |
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| CN110449335B (en) * | 2019-08-16 | 2021-08-06 | 西安理工大学 | Double-rod type giant magnetostrictive transducer and double-rod type giant magnetostrictive spindle |
| CN111702189B (en) * | 2020-06-22 | 2022-03-08 | 陕西师范大学 | Giant magnetostrictive elliptical vibration turning device and turning method |
| CN111701833A (en) * | 2020-06-22 | 2020-09-25 | 陕西师范大学 | Giant magnetostrictive window-shaped elliptical composite vibration transducer and transduction method |
| CN111485842B (en) * | 2020-06-23 | 2022-04-22 | 东北石油大学 | High-frequency vibration exciter for efficient rock breaking of resonance drilling |
| CN112620747A (en) * | 2021-01-29 | 2021-04-09 | 南京晓庄学院 | Auxiliary chip breaking device for drilling high-toughness material by robot spiral milling |
| CN114733741B (en) * | 2022-04-27 | 2023-07-14 | 西安理工大学 | Double-rod-shaped water-cooling giant magnetostrictive ultrasonic vibration device |
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| US4845450A (en) * | 1986-06-02 | 1989-07-04 | Raytheon Company | Self-biased modular magnetostrictive driver and transducer |
| CN107931079B (en) * | 2017-12-04 | 2019-11-22 | 西安理工大学 | A kind of ultra-magnetic telescopic rotary ultrasonic vibration device |
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