CN102248019B - Power synthesis tube and wire drawing device capable of generating elliptical vibration - Google Patents
Power synthesis tube and wire drawing device capable of generating elliptical vibration Download PDFInfo
- Publication number
- CN102248019B CN102248019B CN 201110189475 CN201110189475A CN102248019B CN 102248019 B CN102248019 B CN 102248019B CN 201110189475 CN201110189475 CN 201110189475 CN 201110189475 A CN201110189475 A CN 201110189475A CN 102248019 B CN102248019 B CN 102248019B
- Authority
- CN
- China
- Prior art keywords
- cumulative
- annulus
- vibration
- trombone slide
- elliptical vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005491 wire drawing Methods 0.000 title claims abstract description 38
- 230000015572 biosynthetic process Effects 0.000 title abstract description 8
- 238000003786 synthesis reaction Methods 0.000 title abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 230000001186 cumulative effect Effects 0.000 claims description 81
- 230000000694 effects Effects 0.000 abstract description 17
- 239000002184 metal Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 238000010622 cold drawing Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 230000003321 amplification Effects 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 230000005284 excitation Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011089 mechanical engineering Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
Images
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention aims to provide an ultrasonic power synthesis vibrating system capable of generating elliptical vibration, namely a power synthesis tube and wire drawing device capable of generating elliptical vibration, particulary applicable to high-power cold drawing of metal tubes, wire drawing and other ultrasonic engineering. To achieve the effect, the power synthesis tube and wire drawing device capable of generating elliptical vibration comprises an energy collecting ring, wherein at least three ultrasonic transducers are arranged at the outer side of the energy collecting ring evenly, the energy collecting ring is provided with a vibration displacement pitch line, at least three slits are arranged evenly along the vibration displacement pitch line, and the center of each slit is arranged on the vibration displacement pitch line and forms a certain included angle with the radius of the energy collecting ring. By adopting the technical scheme, the elliptical vibration cold drawing effect of the power synthesis tube and wire drawing device is better than that of single ultrasonic vibration drawing, thus further improving the surface finish of a tube, reducing the drawing force, improving the extension coefficient of a material and enhancing the processing precision of a drawn tube.
Description
Technical field
The present invention relates to a kind of ultrasonic generator for field of machining, relate in particular to the synthetic cold-drawn pipe of elliptical vibration ultrasonic power, wire-drawing frame.
Background technology
Ultrasonic applications is important application and the development of power ultrasonic technology in Metal Forming, be one have energy-conservation, improve the quality of products and the new technology of economic benefit.Compare with traditional process technology, ultrasonic applications has in cold drawn tube drawing, wire drawing and significantly reduces pulling capacity, reduces the processing passage, improves distinguishing features such as the lengthening coefficient of material and machining accuracy, has application prospect at mechanical engineering field.Draw as " Chinese mechanical engineering " the 3rd phase in 2006 " Wire Drawing with Ultrasonic Vibration experimental study " one literary composition research: the ultrasonic vibration wire drawing can more obviously reduce pulling capacity, and ultrasonic vibration can reduce inhomogeneous deformation wiry and improve surface quality." University of Science ﹠ Technology, Beijing's journal " the 1st phase in 2010 " quadrature composite ultraphonic vibration wire drawing " literary composition has carried out experiment and simulation study to the vibrational system wire drawing effect that two mutual perpendicular ultrasonic transducers constitute.Studies show that, compare with the ultrasonic wire drawing effect of various single vibrations, the ultrasonic wire drawing resultant effect of complex vibration the best adopts tension adjustment cycle stretch-out that complex vibration can make wire drawing machine more than 3 times, and can reduce the amplitude of tension adjustment more significantly and more effectively reduce the inhomogeneities of wire drawing.
" the off resonance Compensation Research of ultrasonic vibration trombone slide system " literary composition that " plastic engineering journal " 2004 6 is interim, ultrasonic vibration system has been carried out more deep research in the application aspect the trombone slide, and proposed a Mathematical Modeling, in theory ultrasonic vibration system has been made contribution aspect the trombone slide." steel pipe technology " the 1st phase in 1985 is reported a kind of large power supersonic cold drawing steel tube device, and this device is a kind of longitudinal ultrasonic draw systems, and the ultrasonic vibration direction that namely puts on the trombone slide external mold is consistent with the drawing direction.The cold-drawn pipe technology normally pulls into tubule with extra heavy pipe, if ultrasonic vibration is put on radially, namely have better drawing effect perpendicular to tube axial direction, but existing ultrasonic trombone slide technology adopts the longitudinal ultrasonic vibration basically, and complex vibration drawing effect significantly is better than single vibration, and above-mentioned quadrature Wire Drawing with Ultrasonic Vibration effect has proved this point.2004, this Nagoya University of El is processed at crisp and hard material and is studied, point out that ultrasonic elliptical vibratory (synthesizing of two vertical once per revolution vibrations) can significantly increase critical depth, improve the suface processing quality of material, verified its feasibility to hard brittle material processing.If but want to produce the general vibration that needs on 2 frees degree of elliptical vibration in the prior art, and need two excitation power supplies, structure is very complicated.Therefore we wish to design the simple in structure equipment of the single excitation of cover ultrasonic elliptical vibratory system applies in the tube-pulling craft, to improve the quality of trombone slide, wire drawing.
Summary of the invention
The purpose of this invention is to provide a kind of ultrasonic power resultant vibration system that can produce elliptical vibration.Be particularly useful for ultrasonic engineering technical fields such as high-power cold-drawn metal tube, wire drawing.
Ultrasonic trombone slide vibrational system needs big ultrasonic power and amplitude usually.For reaching described effect, elliptical vibration power of the present invention synthesizes the trombone slide wire-drawing frame, comprise the cumulative annulus, the cumulative annulus outside is evenly distributed with at least 3 ultrasonic transducers, has the vibration displacement nodel line on the described cumulative annulus, be evenly distributed with along the vibration displacement nodel line and be no less than 3 slit, described slit center is on the vibration displacement nodel line, and in a certain angle with the radius of cumulative annulus.
Preferably, described cumulative annulus outer is thick, and is interior along thin.By the amplitude transformer of such structural design formation ecto-entad, to improve amplitude amplification coefficient and vibrational energy efficiency of transmission.In fact, the sectional thickness of cumulative annulus can be linear change along radial direction, also can be nonlinear change, as index shape, power time shape etc.
Preferably, described ultrasonic transducer and cumulative annulus closely are fixed together by connecting screw rod.Being connected firmly like this, and install simple.
Preferably, the angle between described slit and the cumulative annular radii is between 10 degree are spent to 80.The effect of slit is that the radial stress in the cumulative annulus is partially converted to tangential stress, makes the cumulative annulus do the footpath and turns round complex vibration.But when when experiment, finding that angle is between 0-10 degree or 80-90 degree between slit and the cumulative annular radii, radial stress inversion quantity deficiency, the cumulative annulus that makes that can't reach expection is made the purpose that complex vibration is turned round in the footpath.
Preferably, the angle between described slit and the cumulative annular radii is 45 degree.Radial stress under such structure in the cumulative annulus partly changes into changing effect the best of tangential stress.
Preferably, the length of described slit is not more than 1/3 of cumulative annulus ring width, and the width of described slit is not more than 1/10 of its length.Slit bar number is more many in theory, and the longer the better.But long, too much slit can have influence on the structural strength of cumulative annulus self.Therefore must limit its structure, avoid cumulative annulus damage under the high power work state.
Preferably, described cumulative circle ring center cover is embedded with the trombone slide external mold, and described trombone slide external mold is provided with bayonet lock.Guarantee that by bayonet lock the trombone slide external mold is fastened on the cumulative annulus.The trombone slide external mold is used for drawing and is drawn metal tube,
Preferably, described cumulative annulus evenly is provided with screw on its vibration displacement nodel line.When the vibration displacement nodel line vibrated at the cumulative annulus, have a few was vibration nodal point on it, and namely vibration displacement is zero.Therefore can pass screw or screw rod in the screw, the cumulative annulus is fixed on the working position.
Preferably, described ultrasonic transducer works under its vertical fundamental vibration pattern, and the cumulative annulus works under its second rank radial vibration mode, ultrasonic transducer radially encourages the cumulative annulus to vibrate, and radially resonant frequency is identical on second rank of the resonant frequency of ultrasonic transducer and cumulative annulus, and namely both are in resonance state.Ultrasonic transducer is used for driving the cumulative annulus, and the cumulative annulus must work under its second rank radial vibration mode.Because there is not the vibration displacement nodel line under the single order vibration mode in the cumulative annulus, so just be difficult to the fixedly synthetic trombone slide wire-drawing frame of elliptical vibration power of the present invention.In addition, satisfying under certain inside and outside radius ratio condition, the second rank radial vibration mode of cumulative annulus has higher inside and outside amplitude amplification coefficient (encircling the ratio of inside and outside surperficial particle amplitude) than its first rank vibration mode, thereby is very beneficial for improving trombone slide efficient.
Owing to adopted described technical scheme, the elliptical vibration cold drawing effect that the synthetic trombone slide wire-drawing frame of elliptical vibration power of the present invention produces is better than single ultrasonic vibration drawing, can further improve the surface smoothness of pipe, the lengthening coefficient that reduces pulling capacity, raising material and the machining accuracy that improves the drawing pipe.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is the overall structure schematic diagram of the synthetic trombone slide wire-drawing frame of elliptical vibration power of the present invention.
Fig. 2 is the side structure cutaway view of the synthetic trombone slide wire-drawing frame of elliptical vibration power of the present invention.
The specific embodiment
As shown in Figures 1 and 2, elliptical vibration power of the present invention synthesizes the trombone slide wire-drawing frame, comprise cumulative annulus 3, cumulative annulus 3 outsides are evenly distributed with at least 3 ultrasonic transducers 1, has vibration displacement nodel line 5 on the described cumulative annulus 3, be evenly distributed with the slit 4 that is no less than 3 along vibration displacement nodel line 5, described slit 4 is centered close on the vibration displacement nodel line 5, and in a certain angle with cumulative annulus 3 radiuses.Described cumulative annulus 3 outers are thick, and are interior along thin, its sectional thickness can be tapered or shape function such as index shape change.Described ultrasonic transducer 1 and cumulative annulus 3 are fixed together by connecting screw rod 2.Angle is between 10 degree-80 degree between described slit 4 and cumulative annulus 3 radiuses.Angle is 45 degree between described slit 4 and cumulative annulus 3 radiuses.The length of described slit 4 is not more than 1/3 of cumulative annulus 3 ring widthes, and the width of described slit 4 is not more than 1/10 of its length.Described cumulative annulus 3 center are embedded with trombone slide external mold 7, and described trombone slide external mold 7 is provided with bayonet lock makes it closely be fixed on cumulative annulus 3 centers.Described cumulative annulus 3 evenly is provided with screw 6 on vibration displacement nodel line 5.Described ultrasonic transducer 1 works under the fundamental vibration pattern, and cumulative annulus 3 works under its second rank radial vibration mode, and radially resonant frequency is identical on second rank of the resonant frequency of ultrasonic transducer 1 and cumulative annulus 3.
When production elliptical vibration power of the present invention synthesizes the trombone slide wire-drawing frame, need to determine by theoretical calculating and experiment earlier the position of the vibration displacement nodel line 5 on the cumulative annulus 3.Vibration displacement nodel line 5 is cumulative annulus 3 when carrying out the second rank radial vibration, and all some displacement amplitude is a line of zero on the cumulative annulus 3, is the concentric annulus of and cumulative annulus 3.Be benchmark with vibration displacement nodel line 5, the direction of vibration of nodel line both sides is anti-phase.Described cumulative annulus 3 outers are thick, and are interior along thin, and its sectional thickness is linearity or nonlinear function variation along radial direction.Amplitude transformer by such structural design formation ecto-entad can improve its amplitude amplification coefficient and vibrational energy efficiency of transmission.On vibration displacement nodel line 5, evenly be provided with screw 6, leave screw 6 positions, on cumulative annulus 3, also evenly offer the slit 4 of some.Slit 4 can penetrate cumulative annulus 3, also can not penetrate, but is split into the slit of certain depth.The center of slit 4 is on the vibration displacement nodel line 5, and become certain included angle with the radius of cumulative annulus 3, the existence of these slits has changed the axial symmetry of cumulative circular ring structure, and because the sudden change of slit place acoustic impedance in the ring, thereby the radial stress in the cumulative annulus 3 partly is converted to tangential stress, make cumulative annulus 3 do the footpath and turn round complex vibration, and in the cumulative annulus 3 are degeneracys with tangential these two orthogonal vibrations radially, both do elliptic motion by the particle of synthetic back on cumulative annulus medial surface, and obtain elliptical vibration output at the pipe drawing mold inner surface.Angle is between 10 degree-80 degree between described slit 4 and cumulative annulus 3 radiuses, and this angle is 45 when spending usually, the moving conversion effect the best of footpath torsional oscillation.The length of described slit 4 is not more than 1/3 of cumulative annulus 3 ring widthes, and the width of described slit 4 is not more than 1/10 of its length.Though long, wide slit 4 conversion effects are good, can influence the structural strength of cumulative annulus 3 self.Method by slotted 4 can realize the conversion of footpath torsional vibrational mode, obtains the effect of elliptical vibration or class elliptical vibration processing, and this method is easy to realize radially and reverses the degeneracy of two kinds of vibration modes, thereby realized the oval composite mode vibration of single excitation.Around cumulative annulus 3, evenly install at least 3 ultrasonic transducers 1 by connecting screw rod 2 at last, the ultrasonic transducer 1 resonant frequency unanimity of periphery, and be connected in parallel for electricity between each ultrasonic transducer 1.Can need according to concrete operating mode, improve the general power of synthesis system by the quantity that increases ultrasonic transducer 1.And also can embed trombone slide external mold 7 by the hot jacket mode at described cumulative annulus 3 centers.
During work, elliptical vibration power of the present invention synthesizes the trombone slide wire-drawing frame, and pass screw 6 by screw the synthetic trombone slide wire-drawing frame of elliptical vibration power of the present invention is installed on the station, and the metal tube to be drawn 8 of in trombone slide external mold 7, packing into.Start ultrasonic transducer 1, described ultrasonic transducer 1 works in its vertical fundamental vibration pattern, and cumulative annulus 3 works in its second rank radial vibration mode, and the resonant frequency of ultrasonic transducer 1 is consistent with the second rank radial vibration frequency of cumulative annulus 3.The second rank radial vibration of cumulative annulus has higher radially amplitude amplification coefficient than its first rank fundamental vibration pattern, and only on cumulative annulus 3 under the second rank radial vibration mode, just there is a vibration displacement nodel line 5, the synthetic trombone slide wire-drawing frame of elliptical vibration power of the present invention is installed in this position on working position, can be played the vibration isolation effect, reduce the vibrational energy loss greatly.The elliptical vibration cold drawing that produces by structure of the present invention has better effect than single ultrasonic vibration drawing, the surface smoothness, the reduction that can further improve metal tube 8 act on the pulling capacity on the metal tube 8, the lengthening coefficient of raising metal tube 8 materials, improve the machining accuracy of drawing pipe simultaneously.According to actual detected, the maximum radial amplitude amplification coefficient of cumulative annulus when the fundamental vibration pattern is usually less than 2.And the cumulative annulus of the synthetic trombone slide wire-drawing frame of elliptical vibration power of the present invention is satisfying under certain physical dimension condition, and the radially amplitude amplification coefficient the during radial vibration mode of its second rank is much better than prior art greater than 10.And can just can produce elliptical vibration by the ultrasonic transducer 1 that the single supply excitation is arranged on cumulative annulus 3 peripheries, and simple in structure, be convenient to install.
The above only is specific embodiments of the invention, but architectural feature of the present invention is not limited thereto, and any those skilled in the art is in the field of the invention, and the variation of doing or modify all is encompassed among the claim of the present invention.
Claims (8)
1. elliptical vibration power synthesizes the trombone slide wire-drawing frame, it is characterized in that: comprise cumulative annulus (3), cumulative annulus (3) outside is evenly distributed with at least 3 ultrasonic transducers (1), has vibration displacement nodel line (5) on the described cumulative annulus (3), be evenly distributed with the slit (4) that is no less than 3 along vibration displacement nodel line (5), described slit (4) center is on the vibration displacement nodel line (5), and it is in a certain angle with cumulative annulus (3) radius, described ultrasonic transducer (1) works under the single order vibration mode, and cumulative annulus (3) works under the second order vibration mode, and ultrasonic transducer (1) is identical with the vibration frequency of cumulative annulus (3).
2. elliptical vibration power as claimed in claim 1 synthesizes the trombone slide wire-drawing frame, and it is characterized in that: described cumulative annulus (3) outer is thick, and is interior along thin.
3. elliptical vibration power as claimed in claim 1 synthesizes the trombone slide wire-drawing frame, and it is characterized in that: described ultrasonic transducer (1) and cumulative annulus (3) are fixed together by connecting screw rod (2).
4. elliptical vibration power as claimed in claim 1 synthesizes the trombone slide wire-drawing frame, it is characterized in that: angle is between 10 degree-80 degree between described slit (4) and cumulative annulus (3) radius.
5. elliptical vibration power as claimed in claim 1 synthesizes the trombone slide wire-drawing frame, it is characterized in that: angle is 45 degree between described slit (4) and cumulative annulus (3) radius.
6. as claim 1 or the synthetic trombone slide wire-drawing frame of 4 or 5 described elliptical vibration power, it is characterized in that: the length of described slit (4) is not more than 1/3 of cumulative annulus (3) ring width, and the width of described slit (4) is 1/10 of its length.
7. elliptical vibration power as claimed in claim 1 synthesizes the trombone slide wire-drawing frame, and it is characterized in that: described cumulative annulus (3) center is embedded with trombone slide external mold (7), and described trombone slide external mold (7) is provided with bayonet lock.
8. elliptical vibration power as claimed in claim 1 synthesizes the trombone slide wire-drawing frame, and it is characterized in that: described cumulative annulus (3) evenly is provided with screw (6) on vibration displacement nodel line (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110189475 CN102248019B (en) | 2011-07-07 | 2011-07-07 | Power synthesis tube and wire drawing device capable of generating elliptical vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110189475 CN102248019B (en) | 2011-07-07 | 2011-07-07 | Power synthesis tube and wire drawing device capable of generating elliptical vibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102248019A CN102248019A (en) | 2011-11-23 |
| CN102248019B true CN102248019B (en) | 2013-08-07 |
Family
ID=44975796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110189475 Expired - Fee Related CN102248019B (en) | 2011-07-07 | 2011-07-07 | Power synthesis tube and wire drawing device capable of generating elliptical vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102248019B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111645B (en) * | 2013-02-28 | 2016-04-27 | 杭州辉昂科技有限公司 | A kind of circular knife and method for designing thereof being applied to ultrasonic wave processing |
| CN110918659A (en) * | 2019-11-25 | 2020-03-27 | 盐城璟盛电线电缆有限公司 | Copper wire vibration wire drawing device and process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2030819A (en) * | 1978-09-07 | 1980-04-10 | Young M | Improvements in or relating to oscillatory forming equipment |
| EP1273363A2 (en) * | 2001-07-02 | 2003-01-08 | Forschungsgesellschaft Umformtechnik m.b.H. | Axial support for an ultrasonically vibrating die, in particular for wire, bar or tube drawing |
| CN200984590Y (en) * | 2006-11-23 | 2007-12-05 | 陈元平 | Ultrasonic wave fiber drawing system |
| CN202162223U (en) * | 2011-07-07 | 2012-03-14 | 浙江师范大学 | Radial-torsional compound vibration power synthesis tube drawing and wire drawing device |
-
2011
- 2011-07-07 CN CN 201110189475 patent/CN102248019B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2030819A (en) * | 1978-09-07 | 1980-04-10 | Young M | Improvements in or relating to oscillatory forming equipment |
| EP1273363A2 (en) * | 2001-07-02 | 2003-01-08 | Forschungsgesellschaft Umformtechnik m.b.H. | Axial support for an ultrasonically vibrating die, in particular for wire, bar or tube drawing |
| CN200984590Y (en) * | 2006-11-23 | 2007-12-05 | 陈元平 | Ultrasonic wave fiber drawing system |
| CN202162223U (en) * | 2011-07-07 | 2012-03-14 | 浙江师范大学 | Radial-torsional compound vibration power synthesis tube drawing and wire drawing device |
Non-Patent Citations (4)
| Title |
|---|
| 刘世清等.幂函数剖面环形超声聚能器的振动特性及其仿真分析.《浙江师范大学学报》.2010,第33卷(第4期),第418页第4段、第419页第2-3段及第421页第1段. |
| 刘世清等.径扭复合模式盘形压电超声换能器.《机械工程学报》.2009,第45卷(第6期),第177页第3段、第179页. |
| 幂函数剖面环形超声聚能器的振动特性及其仿真分析;刘世清等;《浙江师范大学学报》;20101231;第33卷(第4期);第418页第4段、第419页第2-3段及第421页第1段 * |
| 径扭复合模式盘形压电超声换能器;刘世清等;《机械工程学报》;20090630;第45卷(第6期);第177页第3段、第179页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102248019A (en) | 2011-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhao et al. | System design and experimental research on ultrasonic assisted elliptical vibration grinding of Nano-ZrO2 ceramics | |
| CN103203312B (en) | Giant magnetostictive longitudinal-torsional coupled vibration ultrasonic transducer | |
| CN102248019B (en) | Power synthesis tube and wire drawing device capable of generating elliptical vibration | |
| CN108412947A (en) | A kind of low frequency wide area structure vibration-repressing device that control frequency domain is tunable | |
| CN106053608A (en) | Ultrasonic fatigue testing method of cylindrical sample with uniform cross sections | |
| CN103762892B (en) | A kind of phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap | |
| CN202162223U (en) | Radial-torsional compound vibration power synthesis tube drawing and wire drawing device | |
| Liu et al. | The analysis of the electro-mechanical model of the cylindrical radial composite piezoelectric ceramic transducer | |
| CN206253318U (en) | A kind of device for realizing particle suspension and rotation | |
| Li et al. | Thermoelastic wave characteristics in a hollow cylinder using the modified wave finite element method | |
| Wang et al. | Levitation characteristics of a squeeze-film air journal bearing at its normal modes | |
| CN110202425A (en) | Ultrasonic single-excitation elliptical vibration grinding design method and device | |
| Rai et al. | Modal analysis of horns used in ultrasonic machine | |
| Zhang et al. | Design and experimental study of ultrasonic vibration feeding device with double symmetrical structure | |
| CN207690084U (en) | A kind of compound ultrasonic amplitude transformer with conical transition section with centre bore | |
| Zhu et al. | A new ultrasonic vibration machine for honing | |
| Qin et al. | Modal analysis of helical milling unit | |
| Lin | Study on the step-type circular ring ultrasonic concentrator in radial vibration | |
| Ding et al. | Solutions of Green's function for Lamb's problem of a two-phase saturated medium | |
| Wenxin et al. | The influence of magnetostrictive transducer radiation plate material on radiation sound field distribution | |
| Yang et al. | Optimization of Derusting Guide Rod and Static and Dynamic Analysis | |
| Jiang et al. | Design of Sandwich Transducer Based on the Equivalent Length Algorithm. | |
| CN104441260B (en) | Adjustable magnetic patch magnetic supporting rotary ultrasonic handle of a knife | |
| Shuyu et al. | Radial vibration and ultrasonic field of a long tubular ultrasonic radiator | |
| Zhang et al. | Optimal Design and Experimental Study of Piezoelectric Vibrator With Multi-Order Bending Mode and Multi-Operating Frequency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20150707 |
|
| EXPY | Termination of patent right or utility model |