CN103586192A - Double-stimulation ultrasonic elliptical vibration processing device - Google Patents
Double-stimulation ultrasonic elliptical vibration processing device Download PDFInfo
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- CN103586192A CN103586192A CN201310552225.3A CN201310552225A CN103586192A CN 103586192 A CN103586192 A CN 103586192A CN 201310552225 A CN201310552225 A CN 201310552225A CN 103586192 A CN103586192 A CN 103586192A
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Abstract
Provided is a double-stimulation ultrasonic elliptical vibration processing device. A giant magnetostrictive material is adopted to serve as a drive element, two sets of giant magnetostrictive transducers are arranged in parallel, large-area one-way water-cooling systems are arranged in the transducers, and flexible hinge connection is adopted at vibration output ends. The device has the advantages of being high in output power, loading capacity and energy conversion efficiency, wide in bandwidth, compact and reasonable in structure and the like, and can be widely applied to various ultrasonic elliptical vibration processing operating conditions.
Description
Technical field
The present invention relates to a kind of ultrasonic elliptical vibratory processing unit (plant), particularly a kind of two excitation ultrasonic elliptical vibratory processing unit (plant), belongs to Machining Technology field.
Background technology
Vibration secondary process is a kind of New Processing occurring the 1950's, can effectively improve crudy, thereby be subject to extensive concern.Early stage vibration secondary process technology mostly is the vibration of low frequency one dimension secondary process, i.e. vibration in cutting direction.The nineties in 20th century, Japanese scholars proposes elliptical vibration technology first, and its form is by the stretching vibration of the piezoelectric ceramic piece of two groups of vertical distribution, makes ultrasonic transformer produce flexural vibrations, and synthesizes elliptical vibration track at two ends.Compare with conventional cutting, elliptical vibration cutting can effectively reduce cutting force, improves machining accuracy, extends cutter life, for the generation of tool surface attachment and surperficial burr, has good inhibitory action, is applicable to the Precision Machining of hard brittle material.But two excitation vibration sources of existing elliptical vibration processing unit (plant) are vertical distribution, make whole vibrational system complex structure, volume is larger, is not easy to installation and use on machinery processing apparatus.
For solving this technical problem, BJ University of Aeronautics & Astronautics and Institutes Of Technology Of He'nan have proposed respectively the compound elliptical vibration cutting system of a kind of single excitation longitudinal bending, vibrational system is comprised of the extensional vibration singly encouraging and the ultrasonic transformer that has a skewed slot of certain angle, the degree of depth, quantity, skewed slot can change to mode of vibration, ultrasonic transformer is subject to longitudinally and crooked two kinds of vibrations, thereby at instrument place, produces elliptical vibration.But the defect of the compound elliptical vibration processing unit (plant) of this single excitation longitudinal bending is also very obvious: the one, splitting angle of bevel, the degree of depth and quantity has higher optimization requirement, and difficulty of processing is large, and controllability is poor; The 2nd, the design adverse effect larger to the generation of complex vibration of fluting, makes device be difficult to the assisted machining effect that reaches desirable.
Korea S Taegu Jia Tuli university has proposed another kind of technical solution, the structure that employing is arranged in parallel by two piezoelectricity vibration sources, both overcome two excitation vibration sources and be arranged vertically apparatus structure complexity, the excessive defect of volume causing, the defects such as the fluting difficulty of processing that overcome again the vertical curved compound elliptical vibratory apparatus of single excitation vibration source is large, controllability is poor, vibrocutting effect is influenced, have obtained good technique effect.
But, still there are clear and definite shortcomings and deficiencies in technique scheme: the one, and the performance of piezoelectric own has determined that the output amplitude of this device is less, underpower, cannot meet the dynamically performance requirement of cutting of lathe, thereby only can be applied to the little operating mode processing of the impacts such as V groove, the processing operating mode large for ask for something power output, load force is strong, energy conversion efficiency is high can not adapt to.The 2nd, the heating of piezoelectric vibrator is obvious, adopts air cooling mode not reach desirable radiating effect.Because magnetostrictive transducer is always worked in magnetic field in high strength, high-frequency, magnetic hystersis loss, eddy-current loss and coil resistance loss are serious, the heat producing is very large, on the other hand, magnetostriction materials to external world temperature itself are more responsive, once arrive Curie temperature, it activates just basic forfeiture of performance, thereby cooling is the developing important technological problems of magnetostrictive transducer, be also in prior art, to limit magnetostrictive transducer to technical bottleneck high-power, practical development.The 3rd, the vibration composite structure of traditional double excitation vibration source is for being rigidly connected, and have poor sensitivity, lack the problems such as micrometric displacement enlarging function, and the factor such as machinery cooperations, friction inevitably reduces the precision of the synthetic and transmission of displacement and be rigidly connected.
Summary of the invention
It is little that the present invention is intended to solve the power output that the ultrasonic elliptical vibratory processing unit (plant) of prior art exists, energy conversion efficiency is low, air cooling radiating effect is poor, the mode that the is rigidly connected poor sensitivity of traditional double vibration source output, lack the shortcomings and deficiencies such as displacement enlarging function, provide a kind of giant magnetostrictive material that adopts as two excitation ultrasonic elliptical vibratory processing unit (plant)s of drives structure, adopt dual cavity Parallel Symmetric to arrange two groups of giant magnetostrictive transducers, and unidirectional water-cooling system is set in dual cavity, at vibration output, adopt flexible hinge to connect, there is power output large, load force is strong, energy conversion efficiency is high, bandwidth, the advantages such as compact conformation is reasonable, be widely used in all kinds of ultrasonic elliptical vibratory processing operating modes.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of two excitation ultrasonic elliptical vibratory processing unit (plant)s, comprise front cutter, vibration generating unit and rear handle of a knife, it is characterized in that: described vibration generating unit comprises two groups of giant magnetostrictive transducers that are arranged in parallel, described every group of giant magnetostrictive transducer comprises the giant magnetostrictive rod of being made by giant magnetostrictive material.
A kind of two excitation ultrasonic elliptical vibratory processing unit (plant), described vibration generating unit also comprise upper and lower opening outer sleeve, the inner chamber of described outer sleeve is divided into two identical chambers by vertical baffle, described two groups of giant magnetostrictive transducers are separately positioned in two chambers, described every group of giant magnetostrictive transducer comprises from the outer shroud bias magnetic field generator that inwardly ring sets gradually, magnet exciting coil, support set, giant magnetostrictive rod, described every group of giant magnetostrictive transducer also comprises the lower yoke that is positioned at the upper yoke at top and is positioned at bottom, described upper yoke, lower yoke forms magnet exciting coil together with bias magnetic field generator, support set, the building enclosure of giant magnetostrictive rod also forms closed magnetic loop, described lower yoke is fixedly connected with rear handle of a knife, described every group of giant magnetostrictive transducer also comprises the take-off lever that is positioned at yoke top, described take-off lever is connected with upper yoke extruding by pre-tightening apparatus.
A kind of two excitation ultrasonic elliptical vibratory processing unit (plant), described pre-tightening apparatus comprises dish spring, liner and the pre-load nut being socketed in successively from the bottom to top on take-off lever, the external screw thread of described pre-load nut screws mutually with the internal thread of outer sleeve inwall, makes take-off lever be connected with upper yoke extruding after described pre-load nut screws.
An excitation ultrasonic elliptical vibratory processing unit (plant), described bias magnetic field generator is permanent magnet or the coil that passes into bias current.
An excitation ultrasonic elliptical vibratory processing unit (plant), described support set is made by nylon material.
A kind of two excitation ultrasonic elliptical vibratory processing unit (plant), described vibration generating unit also comprises cooling device, described cooling device includes the mouth of a river, two waterwaies, and delivery port, described water inlet and delivery port are symmetrically located at respectively the upper portion side wall of outer sleeve, between the support set of described every group of giant magnetostrictive transducer and giant magnetostrictive rod, be respectively equipped with the waterway of ring-type, on the upper yoke of described every group of giant magnetostrictive transducer, be respectively equipped with L shaped, the upper intercommunicating pore being connected with waterway, described two upper intercommunicating pores respectively with water inlet, delivery port is connected, on the lower yoke of described every group of giant magnetostrictive transducer, be respectively equipped with L shaped, the lower intercommunicating pore being connected with waterway, the vertical baffle bottom of described outer sleeve is provided with connected chamber, described two lower intercommunicating pores are connected by connected chamber.
A kind of two excitation ultrasonic elliptical vibratory processing unit (plant), described front cutter comprises flexible hinge, blade and cutter head, described flexible hinge forms " people " character form structure by mobile jib and two arms, described mobile jib is fixedly connected with cutter head, described two arms are fixedly connected with the take-off lever of two groups of giant magnetostrictive transducers respectively, and the junction of described mobile jib and two arms is provided with monolateral or bilateral arc incision.
Compared with prior art, useful technique effect of the present invention is:
1. the present invention adopts giant magnetostrictive material to make giant magnetostrictive transducer, adopts the transducer of piezoelectric to compare with prior art, the remarkable advantage such as have that magnetostrictive strain is large, power output is high, fast response time, load capacity are strong.
2. in giant magnetostrictive transducer inside, large area is set, goes along with sb. to guard him formula water-cooling system, can take away rapidly work calories, keep the lower operating temperature in transducer inside.
3. the output of pair excitation vibration source adopts flexible hinge to be connected with cutter head, be convenient to two groups of parallel vibrating displacement couplings and amplify, compare with being rigidly connected of prior art, have highly sensitive, transmit the advantages such as displacement is large, machinery-free friction, gapless, can meet system and work under resonance and disresonance condition, working band is wide.
4. dual cavity symmetrical parallel is arranged, can effectively reduce device volume, and conveniently installs and be clamped on lathe cutter saddle.
Accompanying drawing explanation
Fig. 1 is the stereogram of a kind of two excitation ultrasonic elliptical vibratory processing unit (plant)s of the present invention.
Fig. 2 is the structural representation of a kind of two excitation ultrasonic elliptical vibratory processing unit (plant)s of the present invention.
Wherein: cutter before 100-, 101-flexible hinge, 102-blade, 103-cutter head, 200-vibrates generating unit, 201-bias magnetic field generator, 202-magnet exciting coil, 203-support set, 204-waterway, 205-giant magnetostrictive rod, 206-water inlet, the upper yoke of 207-, 208-dish spring, 209-pre-load nut, 210-take-off lever, 211-liner, 212-delivery port, 213-outer sleeve, 214-connected chamber, 215-lower yoke, the upper intercommunicating pore of 216-, intercommunicating pore under 217-, handle of a knife after 300-.
The specific embodiment
Below in conjunction with accompanying drawing, further illustrate the specific embodiment of the present invention.
A kind of two excitation ultrasonic elliptical vibratory processing unit (plant)s provided by the invention, comprise front cutter 100, vibration generating unit 200 and rear handle of a knife 300, vibration generating unit 200 comprises two groups of giant magnetostrictive transducers that are arranged in parallel, and every group of giant magnetostrictive transducer comprises the giant magnetostrictive rod 205 of being made by giant magnetostrictive material.The present invention adopts giant magnetostrictive material to make giant magnetostrictive transducer, adopts the transducer of piezoelectric to compare with prior art, the remarkable advantage such as have that magnetostrictive strain is large, power output is high, fast response time, load capacity are strong.
Referring to Fig. 2, the structural representation of a kind of two excitation ultrasonic elliptical vibratory processing unit (plant)s provided by the invention.Vibration generating unit 200 comprises the outer sleeve 213 of the rectangle of upper and lower opening, and its inner chamber is divided into two identical chambers by vertical baffle, and two groups of giant magnetostrictive transducers are separately positioned in two chambers.Every group of giant magnetostrictive transducer comprises from outer shroud bias magnetic field generator 201, magnet exciting coil 202, support set 203, giant magnetostrictive rod 205 that inwardly ring sets gradually.The top of every group of giant magnetostrictive transducer is provided with yoke 207, bottom is provided with lower yoke 215, upper yoke 207, lower yoke 215 form the building enclosure of magnet exciting coil 202, support set 203, giant magnetostrictive rod 205 and form closed magnetic loop together with bias magnetic field generator 201, can prevent well magnetic leakage.On each, the top of yoke 207 is provided with take-off lever 210, and take-off lever 210 is connected with upper yoke 207 extruding by pre-tightening apparatus, and lower yoke 215 is fixedly connected with rear handle of a knife 300, thereby makes front cutter 100, vibration generating unit 200 and rear handle of a knife 300 connect into integral body.Lower yoke 215 is generally with bolts with being connected of rear handle of a knife 300.
Two excitation ultrasonic elliptical vibratory processing unit (plant) provided by the invention, the pre-tightening apparatus of every group of giant magnetostrictive transducer can comprise dish spring 208, liner 211 and the pre-load nut 209 being socketed in successively from the bottom to top on take-off lever 210, the external screw thread of pre-load nut 209 screws mutually with the internal thread of outer sleeve 213, rotation pre-load nut 209 can make take-off lever 210 be connected with upper yoke 207 extruding, and further push giant magnetostrictive rod 205 and apply suitable pretightning force, guarantee its normal operation.
Two excitation ultrasonic elliptical vibratory processing unit (plant) provided by the invention, bias magnetic field generator 201 provides bias magnetic field for giant magnetostrictive rod 205, avoids occurring frequency multiplication phenomenon, guarantees that giant magnetostrictive rod is in linear zone work.Bias magnetic field generator 201 can be permanent magnet or the coil that passes into bias current, and preferred permanent magnet, because the volume of permanent magnet is little, compact conformation.
Two excitation ultrasonic elliptical vibratory processing unit (plant) provided by the invention, support set 203 is made by nylon material.Nylon material has good thermal insulation and supportive, stops the work calories of magnet exciting coil to the transmission of the giant magnetostrictive rod of core, and can support well magnet exciting coil.
Two excitation ultrasonic elliptical vibratory processing unit (plant) provided by the invention, vibration generating unit 200 also comprises cooling device, includes the mouth of a river 206, two waterwaies 204 and delivery ports 212.Wherein, water inlet 206 and delivery port 212 are symmetrically located at respectively the upper portion side wall of outer sleeve 213.Between the support set 203 of every group of giant magnetostrictive transducer and giant magnetostrictive rod 205, be respectively equipped with the waterway 204 of ring-type; On the upper yoke 207 of every group of transducer, being respectively equipped with 216, two upper intercommunicating pores 216 of upper intercommunicating pore L shaped, that be connected with waterway 204 is connected with water inlet 206, delivery port 212 respectively; On the lower yoke 215 of every group of transducer, be respectively equipped with lower intercommunicating pore 217 L shaped, that be connected with waterway 204, the vertical baffle bottom of outer sleeve 213 is provided with 214, two lower intercommunicating pores 217 of connected chamber and is connected by connected chamber 214.Thereby, having formed the water-cooling channel of water inlet 206, two waterwaies 204, delivery port 212, the current that pass into suitable pressure can form unidirectional hydrologic cycle cooling system.Two excitation ultrasonic elliptical vibratory processing unit (plant) provided by the invention, utilize the annular gap between support set 203 and giant magnetostrictive rod 205 to form water-cooled cavity, water coolers is trapped among the whole sidewalls of giant magnetostrictive rod 205, can take away rapidly the heat that giant magnetostrictive rod 205 produces, and take away the heat that magnet exciting coil 202 produces simultaneously, keep the lower temperature in transducer inside, make giant magnetostrictive rod normal operation.The water cooling plant that two excitation ultrasonic elliptical vibratory processing unit (plant) provided by the invention adopts, film-cooled heat is large, good cooling results, and the ingenious structure interval that utilizes is as cooling cavity, simple in structure, with low cost.
Two excitation ultrasonic elliptical vibratory processing unit (plant) provided by the invention, front cutter 100 comprises flexible hinge 101, blade 102 and cutter head 103.Flexible hinge 101 forms " people " character form structure by mobile jib and two arms, mobile jib is fixedly connected with cutter head 103, two arms are fixedly connected with the take-off lever 210 of two groups of giant magnetostrictive transducers respectively, and the junction of two arms and mobile jib is provided with monolateral or bilateral arc incision.The output of vibration source adopts flexible hinge to be connected with cutter head, be convenient to two groups of parallel vibrating displacement couplings and amplify, compare with being rigidly connected of prior art, have highly sensitive, transmit the advantages such as displacement is large, machinery-free friction, gapless, can meet system and work under resonance and disresonance condition, working band is wide.
Installation and the operating process of two excitation ultrasonic elliptical vibratory processing unit (plant)s provided by the invention are as follows:
1, handle of a knife 301 is bolted and is connected with outer sleeve 213;
2, every group of giant magnetostrictive transducer is installed respectively, lower yoke 215 is put into outer sleeve 213, and make the two ends of lower intercommunicating pore 217 align respectively waterway 204 and connected chamber 214; In each chamber of outer sleeve 213, by the inside ring of outer shroud, put into successively bias magnetic field generator 201, magnet exciting coil 202, support set 203, giant magnetostrictive rod 205; Put again into yoke 207, and make the two ends of intercommunicating pore 216 align respectively waterway 204, water inlet 206 or delivery port 212; Put into again take-off lever 210, dish spring 208, liner 211, and screw on pre-load nut 209;
3, two arms of the flexible hinge of front cutter 100 101 are welded with two take-off levers 210 respectively;
4, handle of a knife 301 is clamped on knife rest, completes installation;
5, external water cooling system is driven and opened, to water inlet, inject the current of suitable pressure, start water cooling plant;
6, input alternating voltage and make the interior generation alternating current of magnet exciting coil 202, and then portion produces alternating magnetic field within it, make giant magnetostrictive rod 205 alternation under magnetostrictive effect flexible, produce vibration, and at cutter head, synthesize elliptical vibration track by flexible hinge.While needing, can also be by regulating amplitude, frequency and the phase place of two pumping signals to regulate elliptical vibration track.
Claims (7)
1. one kind pair is encouraged ultrasonic elliptical vibratory processing unit (plant), comprise front cutter (100), vibration generating unit (200) and rear handle of a knife (300), it is characterized in that: described vibration generating unit (200) comprises two groups of giant magnetostrictive transducers that are arranged in parallel, described every group of giant magnetostrictive transducer comprises the giant magnetostrictive rod (205) of being made by giant magnetostrictive material.
2. a kind of pair according to claim 1 is encouraged ultrasonic elliptical vibratory processing unit (plant)s, it is characterized in that: described vibration generating unit (200) also comprises the outer sleeve (213) of upper and lower opening, the inner chamber of described outer sleeve is divided into two identical chambers by vertical baffle, described two groups of giant magnetostrictive transducers are separately positioned in two chambers, described every group of giant magnetostrictive transducer comprises from the outer shroud bias magnetic field generator (201) that inwardly ring sets gradually, magnet exciting coil (202), support set (203), giant magnetostrictive rod (205), described every group of giant magnetostrictive transducer also comprises the lower yoke (215) that is positioned at the upper yoke (207) at top and is positioned at bottom, described upper yoke (207), lower yoke (215) and bias magnetic field generator (201) form together to magnet exciting coil (202), support set (203), the building enclosure of giant magnetostrictive rod (205) also forms closed magnetic loop, described lower yoke (215) is fixedly connected with rear handle of a knife (300), described every group of giant magnetostrictive transducer also comprises the take-off lever (210) that is positioned at yoke (207) top, described take-off lever (210) is connected with upper yoke (207) extruding by pre-tightening apparatus.
3. a kind of pair according to claim 2 is encouraged ultrasonic elliptical vibratory processing unit (plant)s, it is characterized in that: described pre-tightening apparatus comprises dish spring (208), liner (211) and the pre-load nut (209) being socketed in successively from the bottom to top on take-off lever (210), the external screw thread of described pre-load nut (209) screws mutually with the internal thread of outer sleeve inwall, makes take-off lever (210) be connected with upper yoke (207) extruding after described pre-load nut (209) screws.
4. a kind of two excitation ultrasonic elliptical vibratory processing unit (plant)s according to claim 2, is characterized in that: described bias magnetic field generator (201) is the coil of permanent magnet or input bias current.
5. a kind of two excitation ultrasonic elliptical vibratory processing unit (plant)s according to claim 2, is characterized in that: described support set (203) is made by nylon material.
6. a kind of pair according to claim 1 and 2 is encouraged ultrasonic elliptical vibratory processing unit (plant)s, it is characterized in that: described vibration generating unit (200) also comprises cooling device, described cooling device includes the mouth of a river (206), two waterwaies (204) and delivery port (212), described water inlet (206) and delivery port (212) are symmetrically located at respectively the upper portion side wall of outer sleeve (213), between the support set of described every group of giant magnetostrictive transducer (203) and giant magnetostrictive rod (205), be respectively equipped with the waterway (204) of ring-type, on the upper yoke (207) of described every group of giant magnetostrictive transducer, be respectively equipped with L shaped, the upper intercommunicating pore (216) being connected with waterway (204), described two upper intercommunicating pores (216) also respectively with water inlet (206), delivery port (212) is connected, on the lower yoke of described every group of giant magnetostrictive transducer (215), be respectively equipped with L shaped, the lower intercommunicating pore (217) being connected with waterway (204), the vertical baffle bottom of described outer sleeve (213) is provided with connected chamber (214), described two lower intercommunicating pores (217) are connected by connected chamber (214).
7. a kind of pair according to claim 1 and 2 is encouraged ultrasonic elliptical vibratory processing unit (plant)s, it is characterized in that: described front cutter (100) comprises flexible hinge (101), blade (102) and cutter head (103), described flexible hinge (101) forms " people " character form structure by mobile jib and two arms, described mobile jib is fixedly connected with cutter head (103), described two arms are fixedly connected with the take-off lever (210) of two groups of giant magnetostrictive transducers respectively, and the junction of described mobile jib and two arms is provided with monolateral or bilateral arc incision.
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| CN104946880A (en) * | 2015-05-29 | 2015-09-30 | 北京交通大学长三角研究院 | Rare earth super-magnetostrictive ultrasonic reinforcement apparatus |
| CN105397920A (en) * | 2015-10-21 | 2016-03-16 | 清华大学 | Giant magnetostrictive rotary ultrasonic vibration knife handle |
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| CN104946880A (en) * | 2015-05-29 | 2015-09-30 | 北京交通大学长三角研究院 | Rare earth super-magnetostrictive ultrasonic reinforcement apparatus |
| CN105397920A (en) * | 2015-10-21 | 2016-03-16 | 清华大学 | Giant magnetostrictive rotary ultrasonic vibration knife handle |
| CN107042198A (en) * | 2017-01-18 | 2017-08-15 | 皮钧 | A kind of two dimensional ultrasonic vibration processing unit (plant) based on guide wire |
| CN107042198B (en) * | 2017-01-18 | 2019-05-31 | 皮钧 | A kind of two dimensional ultrasonic vibration processing unit (plant) based on guide wire |
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| CN108568398A (en) * | 2018-03-30 | 2018-09-25 | 西安理工大学 | Ultra-magnetic telescopic ultrasonic transducer |
| CN108568398B (en) * | 2018-03-30 | 2020-05-22 | 西安理工大学 | Giant magnetostrictive ultrasonic transducer |
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