CN209681728U - A kind of ultrasonic vibration cutting knife handle - Google Patents
A kind of ultrasonic vibration cutting knife handle Download PDFInfo
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- CN209681728U CN209681728U CN201920438350.4U CN201920438350U CN209681728U CN 209681728 U CN209681728 U CN 209681728U CN 201920438350 U CN201920438350 U CN 201920438350U CN 209681728 U CN209681728 U CN 209681728U
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- ultrasonic
- amplitude transformer
- taper shank
- knife bar
- piezoelectric ceramic
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Abstract
The utility model discloses a kind of ultrasonic vibration cutting knife handles, including ultrasonic wave added cutting vibration system and taper shank；The ultrasonic wave added cutting vibration system includes ultrasonic transducer；Insulation sleeve and whole superhard cutter knife bar, are located at the ultrasonic amplitude transformer front end；The ultrasonic amplitude transformer front end and the whole superhard cutter knife bar are interference fitted by hot charging and are connected.The utility model, which discloses, a kind of to be connect with correction of the flank shape ultrasonic amplitude transformer hot charging interference using correction of the flank shape entirety superhard cutter knife bar, solves the concentration of stress existing for junction, it eliminates under high frequency or large amplitude ultrasonic vibration, whole superhard cutter is easy to happen fracture or fragmentation problem.Simultaneously because connecting only with a mating surface, the assembly precision of cutter is high, and the high-precision for realizing whole superhard cutter knife bar high frequency or the processing of large amplitude ultrasonic cutting is reliably connected.
Description
Technical field
The utility model belongs to Ultrasonic machining technology field more particularly to a kind of ultrasonic vibration cutting knife handle.
Background technique
In recent years, novel high-performance material, such as high temperature alloy, titanium alloy, high strength steel, composite material advanced material
Due to its excellent performance, had been more and more widely used in fields such as aerospaces.These material work in-processes are shown
The processing such as workhardness is big, cutting force is big, cutting temperature is high, tool wear is serious, processing efficiency is low, processing quality is undesirable are asked
Topic, belongs to typical difficult-to-machine material.Process this kind of materials'use cutter be mainly hard alloy cutter, diamond cutter,
The superhard cutters such as cubic boron nitride cutting tool mainly have two class of superhard cutting blade and whole superhard cutter.Superhard cutting blade is mainly by hard
The materials such as alloy, diamond, cubic boron nitride are made, and are used primarily on mechanical clamped cutting tool.Whole superhard cutter mainly has whole hard
Matter alloy and its coated cutting tool etc., the mainly cutter of small size.Adding for difficult-to-machine material is carried out only with superhard cutter at present
Work be no longer satisfied high-end manufacturing industry to part high quality, high-precision and with efficient processing request.
Ultrasonic wave added Machining Technology for Cutting is that the one kind being compounded to form is vibrated using traditional machining and high frequency ultrasound newly
Processing technology.It is real that this processing technology mainly passes through machine cut effect, the micro- effect of impact of high frequency and ultrasonic cavitation
The removal of existing material.Due to the introducing of ultrasonic vibration, the cutting mechanisms of material are changed, reduce rubbing between workpiece and cutter
Power is wiped, makes discontinuous contact reduces the action time of cutter and workpiece, reduces cutting force, reduces tool wear, improves and adds
Work surface quality meets high-precision, high quality and efficient part processing request.A large amount of theoretical and experimental investigations discoveries, surpass
The difficult-to-machine materials such as sound assisted machining processing high temperature alloy, titanium alloy, composite material can obtain better processing quality and essence
Degree, greatly reduces tool wear, improves processing efficiency.
When carrying out the cutting of difficult-to-machine material ultrasonic wave added using whole superhard cutter, cutter is connect good with ultrasonic amplitude transformer
The bad working performance for determining ultrasonic wave added cutting vibration system, and ultrasonic wave added cutting vibration system is to realize that ultrasonic wave added adds
The key of work, while being the core component of ultrasonic vibration cutting knife handle.It is whole super at present in ultrasonic vibration cutting knife handle
Hard cutting tool and the common connection type of ultrasonic amplitude transformer mainly have collet to connect and hot charging interference fit connection two ways.
Patent CN201710143450 discloses a kind of ultrasonic vibration milling, drill unit, in this device whole hard
Alloy cutter and ultrasonic amplitude transformer use collet connection type, and such connection type advantage is that structure is simple, automatic
Positioning clamps, and handling replacement cutter is convenient.But this connection type is there are tool assembly precision is low, Yi Fare in the course of work,
Ultrasonic energy losses are caused, ultrasonic energy transmission efficiency is low；The chucking power of offer is relatively small, and the bearing capacity of cutter is smaller；
There are stress concentration, cutters to be easy to happen fracture or fragmentation under high frequency or large amplitude ultrasonic vibration for junction.
Patent CN201811307405 discloses a kind of hot charging formula ultra-magnetic telescopic ultrasound knife handle, solid carbide
The connection type that hot charging interference fit is used with ultrasonic amplitude transformer is connected compared to collet, has higher cooperation essence
Degree and ultrasonic energy transmission efficiency.But since junction is there are stress concentration, cutter is easy to happen disconnected under high frequency ultrasound vibration
It splits or fragmentation, there are problems that connection reliability.
In longitudinal pumping formula ultrasonic vibration milling handle device disclosed in patent CN201610048459, by the hard of standard
Alloy milling cutter end hot charging thread head processes the threaded hole that matches in ultrasonic amplitude transformer, realize solid carbide with
The connection of ultrasonic amplitude transformer.It is connected compared to common hot charging interference, this connection type is more convenient the installation and removal of cutter, still
Due to being connected twice by screw thread and hot charging, cooperation precision is reduced, ultrasonic energy loss is increased.Same junction, which exists, answers
Power concentration problem is not suitable for working under high frequency or large amplitude ultrasonic vibration.
Utility model content
According to above-mentioned when carrying out difficult-to-machine material ultrasonic wave added machining using whole superhard cutter, current ultrasound
There are ultrasonic energy transmission efficiencies low, cutter is easy to happen under the high frequency or large amplitude ultrasonic vibration fracture of vibrocutting knife handle or
The problems such as fragmentation.The utility model discloses one kind to be used for the cutting of hardworking material, high-precision, high reliability, big carrying and height
Imitate the ultrasonic wave added cutting vibration system and application of ultrasonic energy transmitting.
A kind of ultrasonic vibration cutting knife handle, including ultrasonic wave added cutting vibration system and taper shank；
The ultrasonic wave added cutting vibration system includes ultrasonic transducer comprising pretension bolt, back shroud and ultrasound
Amplitude transformer, the pretension bolt passes through the back shroud and connect with the ultrasonic amplitude of fluctuation rod rear end, and will be located at the back shroud
Insulating ceramic film one, rear piezoelectric ceramic piece, preceding piezoelectric ceramic piece and insulating ceramic film two between the ultrasonic amplitude transformer are pressed
Tightly；
Insulation sleeve, in the bolt section of the pretension bolt between the back shroud and the ultrasonic amplitude transformer,
On be sequentially socketed with the insulating ceramic film one, it is described after piezoelectric ceramic piece, the preceding piezoelectric ceramic piece and the insulating ceramics
Piece two, the rear rear end face of piezoelectric ceramic piece and the front end face of the preceding piezoelectric ceramic piece have been respectively fixedly connected with the electrode
Piece one is connected between piezoelectric ceramic piece and the preceding piezoelectric ceramic piece by fixing positioned at electrode slice two between the two after described
It connects；
And whole superhard cutter knife bar, it is located at the ultrasonic amplitude transformer front end；
The ultrasonic amplitude transformer front end and the whole superhard cutter knife bar are interference fitted by hot charging and are connected；
The taper shank front end has taper shank groove, and cell wall inner wall, which is equipped with, at the taper shank slot opening is located at institute for accommodating
The flange groove of the flange in ultrasonic amplitude transformer circumferential direction is stated, the flange is fixed by clamp nut and the flange groove, institute
State clamp nut connect with cell wall outer wall thread at the taper shank slot opening and the clamp nut have the ultrasonic amplitude of fluctuation
The central through hole that bar passes through；
The taper shank outer wall is fixed a dead ring one and dead ring two, two electrode slices one by conducting wire one with it is fixed
Collector ring one on the dead ring one connects, and the electrode slice two is by conducting wire two and is tightly placed on the dead ring two
Collector ring two connects；
The collector ring one is connect with the positive or negative pole of ultrasonic signal generator, the collector ring two and the current collection
The polarity of electrode for the ultrasonic signal generator that ring one connects is opposite；
The taper shank is equipped with the hole that the conducting wire one and the conducting wire two pass through.
The taper shank rear end is equipped with the threaded hole being threadedly coupled with blind rivet, and the taper shank is connected to machine tool chief axis by blind rivet
On；
Lead between the pretension bolt and the back shroud and between the pretension bolt and the ultrasonic amplitude transformer
Cross threaded connection.
The ultrasonic amplitude transformer front end is equipped with the connecting hole with the whole superhard cutter knife bar hot charging interference fit.
The connecting hole is handled by correction of the flank shape；
The entirety superhard cutter knife bar has the knife bar face for matching with the connecting hole and handling by correction of the flank shape.
Compared with prior art, the utility model has the beneficial effects that
1, realize that whole superhard cutter knife bar and ultrasonic amplitude transformer high-precision are reliably connected
The collet connection type used in patent CN201710143450 becomes solid carbide and ultrasound
The connection of width bar, this connection type are cooperated by the outer conical surface and ultrasonic amplitude transformer of collet, and inner cylinder face is matched with cutter
It closes, and realizes the clamping of cutter by the flexible deformation of collet, therefore the installation accuracy of cutter surface error with two
The sum of determine, therefore tool assembly precision is relatively low.In patent CN201610048459, it is interference fitted using cutter hot charging
Cutter is connected with thread head, is connected by screw thread with ultrasonic amplitude transformer, due to being connected by screw thread with two mating surfaces of hot charging,
Equally reduce cooperation precision.In patent CN20181130740, solid carbide and ultrasonic amplitude transformer are using common
Hot charging interference fit connection, only by a mating surface connection, cooperation precision is relatively high.And in patent
There is stress concentration in the connection type used in CN201710143450, CN201610048459 and CN20181130740
Under high frequency or large amplitude ultrasonic vibration, fracture or fragmentation easily occur for problem since whole superhard cutter is hard brittle material.
The utility model disclose it is a kind of connect with correction of the flank shape ultrasonic amplitude transformer hot charging interference using correction of the flank shape entirety superhard cutter knife bar, solution
Stress existing for junction is concentrated, and is eliminated under high frequency or large amplitude ultrasonic vibration, whole superhard cutter is easy to happen disconnected
It splits or fragmentation problem.Simultaneously because connecting only with a mating surface, the assembly precision of cutter is high, realizes whole superhard cutter
Knife bar high frequency or the high-precision of large amplitude ultrasonic cutting processing are reliably connected.
2, ultrasonic energy transmission efficiency is high
The collet connection used in patent CN201710143450 and the heat used in patent CN201610048459
It fills interference connection and hot charging is threadedly coupled, be attached by two mating surfaces, therefore ultrasonic vibrational energy is become by ultrasound
It when width bar passes to cutter, needs to transmit by mating surface twice, there is energy loss twice, during the work time easily fever,
Ultrasonic energy transmission efficiency is lower.The hot charging interference fit connection used in patent CN201811307405, due to connecting in cooperation
There are stress concentrations at the place of connecing, so that some places contact stress is big in mating surface, some places contact stress is small, and contact surface is non-
Iso-stress contact, causes the juxtaposition metamorphose in mating surface inconsistent, and cooperation precision is relatively low, and ultrasonic energy passes on a mating
The consumption generated when passing is relatively large, and transmission efficiency is relatively low.The utility model is using the improved hot charging interference fit of correction of the flank shape
Connection, solves problem of stress concentration existing for junction, realizes iso-stress contact, and cooperation precision is high, is not easy to generate heat, be not easy
Ultrasonic energy losses are generated, therefore ultrasonic energy transmission efficiency is high.
3, the large carrying capacity of whole superhard cutter knife bar
In the connection type used in patent CN201710143450, CN201610048459 and CN20181130740
There are problem of stress concentration, in order to avoid whole superhard cutter is broken in high frequency or large amplitude ultrasonic wave added machining
Or fragmentation, collet connection type, use reduction chuck nut screwing force to reduce junction chucking power with this；Hot charging interference connects
Mode is connect, chucking power is reduced using the magnitude of interference for reducing junction.By reducing chucking power, so that stress concentrated position is answered
Power is less than allowable stress during ultrasonic vibration, and the fracture or fragmentation of cutter are avoided with this.The load born by cutter
Lotus is transmitted by the mating surface of junction, and chucking power, which becomes smaller, causes cutter to fluff with amplitude transformer cooperation, so cutter is held
Loading capability becomes smaller.The utility model is solved the concentration of stress existing for junction and is asked using the improved hot charging interference connection of correction of the flank shape
Topic, realizes in the case where not reducing original chucking power, and the stress of cutter junction is respectively less than to be permitted during ultrasonic vibration
With stress, under high frequency or large amplitude ultrasonic vibration, compared to patent CN201710143450, CN201610048459 and
CN20181130740, the large carrying capacity of the whole superhard cutter knife bar of the utility model.
The utility model can cut the fields such as difficult-to-machine material in ultrasonic wave added and be widely popularized based on the above reasons.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is done simply to introduce, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of ultrasonic vibration cutting knife handle in specific embodiment of the present utility model.
Fig. 2 is the structural schematic diagram of ultrasonic wave added cutting vibration system in specific embodiment of the present utility model.
Fig. 3 is the structural schematic diagram of ultrasonic amplitude transformer front end in specific embodiment of the present utility model.
Fig. 4 is the portion A enlarged structure schematic diagram in Fig. 3.
Fig. 5 is whole superhard cutter knife bar rear end structure schematic diagram in specific embodiment of the present utility model.
Fig. 6 is the portion B enlarged structure schematic diagram in Fig. 5.
Fig. 7 is that the correction of the flank shape of ultrasonic wave added cutting vibration system and non-correction of the flank shape are handled in specific embodiment of the present utility model
Cooperate equivalent stress comparison diagram.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
As shown in Fig. 1-Fig. 7, a kind of ultrasonic vibration cutting knife handle, including ultrasonic wave added cutting vibration system and taper shank 14；
The ultrasonic wave added cutting vibration system includes ultrasonic transducer comprising pretension bolt 1, back shroud 2 and super
Sound amplitude transformer 3, the pretension bolt 1 pass through the back shroud 2 and connect with 3 rear end of ultrasonic amplitude transformer, and will be located at described
Insulating ceramic film 1, rear piezoelectric ceramic piece 5, preceding piezoelectric ceramic piece 6 and insulation between back shroud 2 and the ultrasonic amplitude transformer 3
Potsherd 27 compresses；
Insulation sleeve 8, the bolt section of the pretension bolt 1 between the back shroud 2 and the ultrasonic amplitude transformer 3
On, be sequentially socketed with thereon the insulating ceramic film 1, it is described after piezoelectric ceramic piece 5, the preceding piezoelectric ceramic piece 6 and described
Insulating ceramic film 27, the front end face of the rear end face of piezoelectric ceramic piece 5 and the preceding piezoelectric ceramic piece 6 afterwards is fixed respectively to be connected
It is connected to the electrode slice 1, passes through between piezoelectric ceramic piece 5 and the preceding piezoelectric ceramic piece 6 after described and is located between the two
Electrode slice 2 10 is fixedly connected；
And whole superhard cutter knife bar 11, it is located at 3 front end of ultrasonic amplitude transformer；
3 front end of ultrasonic amplitude transformer and the whole superhard cutter knife bar 11 are interference fitted by hot charging and are connected.
14 front end of taper shank has taper shank groove 15, and the 15 opening cell wall inner wall of taper shank groove is equipped with for accommodating
The flange groove of flange 16 in 3 circumferential direction of ultrasonic amplitude transformer, the flange 16 pass through clamp nut 17 and the flange
Slot is fixed, and the clamp nut 17 is connect with the 15 opening cell wall outer wall thread of taper shank groove and the clamp nut
17 central through holes 18 passed through with the ultrasonic amplitude transformer 3；
14 outer wall of taper shank is fixed dead ring 1 and dead ring 2 20, and two electrode slices 1 pass through conducting wire
One 21 connect with the collector ring 1 being tightly placed on the dead ring 1, the electrode slice 2 10 by conducting wire 2 23 with it is fixed
Collector ring 2 24 on the dead ring 2 20 connects；
The taper shank 14 is equipped with the hole 25 that the conducting wire 1 and the conducting wire 2 23 pass through.
14 rear end of taper shank is equipped with the threaded hole 26 being threadedly coupled with blind rivet；
Between the pretension bolt 1 and the back shroud 2 and between the pretension bolt 1 and the ultrasonic amplitude transformer 3
It is connected through a screw thread.
3 front end of ultrasonic amplitude transformer is equipped with the connecting hole with the whole 11 hot charging interference fit of superhard cutter knife bar
12。
The connecting hole 12 is handled by correction of the flank shape；
The entirety superhard cutter knife bar 11 has the knife bar face for matching with the connecting hole 12 and handling by correction of the flank shape
13。
As shown in Figure 7, it can be seen that the cooperation equivalent stress distribution of ultrasonic wave added cutting vibration system is uniform after correction of the flank shape, does not deposit
It is concentrated in stress, the cutting of difficult-to-machine material ultrasonic wave added is carried out under high frequency or large amplitude ultrasonic vibration will not occur the disconnected of cutter
It splits or fragmentation, therefore the large carrying capacity of whole superhard cutter knife bar 11.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (4)
1. a kind of ultrasonic vibration cutting knife handle, which is characterized in that including ultrasonic wave added cutting vibration system and taper shank；
The ultrasonic wave added cutting vibration system includes ultrasonic transducer comprising pretension bolt, back shroud and ultrasonic amplitude of fluctuation
Bar, the pretension bolt passes through the back shroud and connect with the ultrasonic amplitude of fluctuation rod rear end, and will be located at the back shroud and institute
Insulating ceramic film one, rear piezoelectric ceramic piece, preceding piezoelectric ceramic piece and the insulating ceramic film two stated between ultrasonic amplitude transformer compress；
Insulation sleeve, it is suitable thereon in the bolt section of the pretension bolt between the back shroud and the ultrasonic amplitude transformer
It is secondary to be socketed with the insulating ceramic film one, the rear piezoelectric ceramic piece, the preceding piezoelectric ceramic piece and the insulating ceramic film two,
The rear end face of piezoelectric ceramic piece and the front end face of the preceding piezoelectric ceramic piece have been respectively fixedly connected with electrode slice one after described, described
Afterwards by being fixedly connected positioned at electrode slice two between the two between piezoelectric ceramic piece and the preceding piezoelectric ceramic piece；
And whole superhard cutter knife bar, it is located at the ultrasonic amplitude transformer front end；
The ultrasonic amplitude transformer front end and the whole superhard cutter knife bar are interference fitted by hot charging and are connected；
The taper shank front end has taper shank groove, and cell wall inner wall is equipped with for accommodating positioned at described super at the taper shank slot opening
The flange groove of flange in sound amplitude transformer circumferential direction, the flange are fixed by clamp nut and the flange groove, the pressure
Tight nut is connect with cell wall outer wall thread at the taper shank slot opening and there is the clamp nut ultrasonic amplitude transformer to wear
The central through hole crossed；
The taper shank outer wall is fixed dead ring one and dead ring two, and two electrode slices one are by conducting wire one and are tightly placed in institute
The collector ring one stated on dead ring one connects, and the electrode slice two passes through conducting wire two and the current collection being tightly placed on the dead ring two
Ring two connects；
The taper shank is equipped with the hole that the conducting wire one and the conducting wire two pass through.
2. ultrasonic vibration cutting knife handle according to claim 1, which is characterized in that the taper shank rear end is equipped with and blind rivet spiral shell
The threaded hole of line connection；
Pass through spiral shell between the pretension bolt and the back shroud and between the pretension bolt and the ultrasonic amplitude transformer
Line connection.
3. ultrasonic vibration cutting knife handle according to claim 1, which is characterized in that the ultrasonic amplitude transformer front end be equipped with
The connecting hole of the entirety superhard cutter knife bar hot charging interference fit.
4. ultrasonic vibration cutting knife handle according to claim 3, which is characterized in that the connecting hole is handled by correction of the flank shape；
The entirety superhard cutter knife bar has the knife bar face for matching with the connecting hole and handling by correction of the flank shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920438350.4U CN209681728U (en) | 2019-04-02 | 2019-04-02 | A kind of ultrasonic vibration cutting knife handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920438350.4U CN209681728U (en) | 2019-04-02 | 2019-04-02 | A kind of ultrasonic vibration cutting knife handle |
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| Publication Number | Publication Date |
|---|---|
| CN209681728U true CN209681728U (en) | 2019-11-26 |
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| CN201920438350.4U Active CN209681728U (en) | 2019-04-02 | 2019-04-02 | A kind of ultrasonic vibration cutting knife handle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916911A (en) * | 2021-03-05 | 2021-06-08 | 安徽天航机电有限公司 | Ultrasonic auxiliary processing device and simulation analysis method |
| CN114161176A (en) * | 2021-10-27 | 2022-03-11 | 科益展智能装备有限公司 | Ultrasonic knife handle, cutter clamping structure, machining device and machine tool |
| CN114406300A (en) * | 2022-03-28 | 2022-04-29 | 常州捷乾机电科技有限公司 | Kinetic energy coupling type ultrasonic electric spindle |
| CN115008617A (en) * | 2022-06-08 | 2022-09-06 | 广东工业大学 | Ultrasonic knife handle for in-situ detection |
| WO2022262207A1 (en) * | 2021-06-18 | 2022-12-22 | 科益展智能装备有限公司 | High-frequency ultrasonic cutter handle, cutter device, and ultrasonic machine tool |
-
2019
- 2019-04-02 CN CN201920438350.4U patent/CN209681728U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916911A (en) * | 2021-03-05 | 2021-06-08 | 安徽天航机电有限公司 | Ultrasonic auxiliary processing device and simulation analysis method |
| WO2022262207A1 (en) * | 2021-06-18 | 2022-12-22 | 科益展智能装备有限公司 | High-frequency ultrasonic cutter handle, cutter device, and ultrasonic machine tool |
| CN114161176A (en) * | 2021-10-27 | 2022-03-11 | 科益展智能装备有限公司 | Ultrasonic knife handle, cutter clamping structure, machining device and machine tool |
| CN114406300A (en) * | 2022-03-28 | 2022-04-29 | 常州捷乾机电科技有限公司 | Kinetic energy coupling type ultrasonic electric spindle |
| CN114406300B (en) * | 2022-03-28 | 2022-06-14 | 常州捷乾机电科技有限公司 | Kinetic energy coupling type ultrasonic electric spindle |
| CN115008617A (en) * | 2022-06-08 | 2022-09-06 | 广东工业大学 | Ultrasonic knife handle for in-situ detection |
| CN115008617B (en) * | 2022-06-08 | 2024-04-05 | 广东工业大学 | Ultrasonic knife handle for in-situ detection |
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