CN104842029A - Workpiece additional ultrasonic vibration device for ultrasonic electrical discharge machining - Google Patents
Workpiece additional ultrasonic vibration device for ultrasonic electrical discharge machining Download PDFInfo
- Publication number
- CN104842029A CN104842029A CN201510182198.4A CN201510182198A CN104842029A CN 104842029 A CN104842029 A CN 104842029A CN 201510182198 A CN201510182198 A CN 201510182198A CN 104842029 A CN104842029 A CN 104842029A
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- ultrasonic
- workpiece
- vibration device
- frequency
- piezoelectric ceramic
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- 238000009760 electrical discharge machining Methods 0.000 title abstract 4
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims description 12
- 210000001367 artery Anatomy 0.000 claims description 9
- 210000003462 vein Anatomy 0.000 claims description 9
- 230000010358 mechanical oscillation Effects 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 8
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 208000028659 discharge Diseases 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/38—Influencing metal working by using specially adapted means not directly involved in the removal of metal, e.g. ultrasonic waves, magnetic fields or laser irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention belongs to the field of spaceflight or aviation non-traditional machining processes, and particularly relates to a workpiece additional ultrasonic vibration device for ultrasonic electrical discharge machining. The workpiece additional ultrasonic vibration device is suitable for electrical discharge machining of fine, deep and small holes of workpieces through ultrasonic auxiliary vibration, the workpieces are fixed to an ultrasonic working table in the electric discharge machining process, the high-frequency electric energy of an ultrasonic generation device is converted into mechanical energy, the workpieces are driven to conduct ultrasonic vibration, and the fine electrical discharge machining is assisted. The workpiece additional ultrasonic vibration device specifically comprises the ultrasonic generation device (1), a piezoelectric ceramic transducer (2), an amplitude-change pole (3) and a tool (4). In the ultrasonic auxiliary vibration adaptive parameter combination state, the machining efficiency is improved by one time or more, and the electrode loss is reduced by 30%.
Description
Technical field
The invention belongs to space flight or aviation Special Working Technology field, be specifically related to a kind of workpiece attached supersonic vibration device for ultrasonic edm processing.
Background technology
During micro EDM Micro Deep Holes, the etched matter on workpiece is not easily discharged and accumulates in the bottom in hole, easily produces the abnormal discharge phenomenons such as secondary discharge, arcing and short circuit, causes the ablation speed of material sharply to decline, even cannot process.In order to improve working ability and the scope of application of fine electric spark, improving machining state, boosting productivity, there has been proposed the method for ultrasonic wave vibration assist spark machined.
Ultrasonic wave vibration assist spark machined can be divided into the ultrasonic wave vibration assist spark machined of Workpiece vibration and the ultrasonic wave vibration assist spark machined two kinds of tool vibration, but no matter be Workpiece vibration or tool vibration, its process principle is identical.In ultrasonic wave vibration assist spark machined, the ultrasonic energy that surface of the work obtains is very little, and ultrasonic vibration does not participate in process directly, and therefore, the physical process of its single pulse electric discharge is substantially identical with spark machined.
Additional ultrasonic vibration, can make electrode end surface frequently enter suitable discharging gap, improves the probability of spark-over; Ultrasonic cavitation and pump-absorb action simultaneously, the removal amount of machined material can be increased, acceleration working solution circulates, improve gap discharge condition, thus improve the aspect ratio in processed hole, processing stability and working (machining) efficiency, and when amplitude is well controlled, higher machining accuracy can be obtained.
In view of above-mentioned advantage, be necessary to develop a kind of workpiece attached supersonic vibration device for ultrasonic edm processing, to improve minute aperture processing aspect ratio.
Summary of the invention
The object of the present invention is to provide a kind of workpiece attached supersonic vibration device for ultrasonic edm processing, the ultrasonic wave added utilizing this device to carry out workpiece vibrates fine Fine and Deep Hole spark machined, to improve the aspect ratio of micro hole, processing stability and working (machining) efficiency.
In order to realize this purpose, the technical scheme that the present invention takes is:
A kind of workpiece attached supersonic vibration device for ultrasonic edm processing, the ultrasonic wave added being applicable to workpiece vibrates fine Fine and Deep Hole spark machined, in edm process, workpiece is fixed in ultrasonic workbench, the high-frequency electrical energy of ultrasonic generator is changed into mechanical energy, workpiece is driven to do ultrasonic vibration, assist spark machined; Specifically comprise as lower component:
(1) ultrasonic generator
By ultrasonic generator, industrial-frequency alternating current is changed into the supersonic frequency electric oscillation with power stage, power output and frequency continuously adjustabe in setting range; Ultrasonic generator supersonic frequency is 28kHz and 45kHz, 45kHz is basic frequency, and 28kHz is resonant frequency; Ultrasonic power 50W, power adjustable, power output adjusting range is the power stage of 40% ~ 100%;
(2) piezoelectric ceramic transducer
Piezoelectric ceramic transducer is tubular structure, and the supersonic frequency electric oscillation utilizing piezo-electric effect to be provided by ultrasonic generator converts mechanical oscillation to;
(3) ultrasonic transformer
In transducer, axially 3 ultrasonic transformers are set, 3 ultrasonic transformers to be uniformly distributed and the axial location of distance piezoelectric ceramic transducer is identical along piezoelectric ceramic transducer circumferencial direction, the structure of each ultrasonic transformer is the up-thin-low-thick frustum cone structure that upper base diameter is less than diameter of going to the bottom, and is expanded by ultrasonic amplitude by ultrasonic transformer;
(4) frock
Workpiece is connected to workpiece attached supersonic vibration device by frock, and the mechanical oscillation of ultrasonic generator pass to workpiece after ultrasonic transformer amplifies; Frock is the tubular structure identical with the diameter of piezoelectric ceramic transducer, and directly connect with ultrasonic transformer by welding, the frock center of circle overlaps with the center of circle of piezoelectric ceramic transducer.
Further, a kind of workpiece attached supersonic vibration device for ultrasonic edm processing as above, the diameter of piezoelectric ceramic transducer is 40mm; Each ultrasonic transformer is upper base diameter is 2mm, and diameter of going to the bottom is 4mm, and length is the up-thin-low-thick frustum cone structure of 30mm; The cylinder of frock to be diameter be 40mm.
Further, a kind of workpiece attached supersonic vibration device for ultrasonic edm processing as above, ultrasonic generator is double-frequency ultrasound wave producer.
Further, a kind of workpiece attached supersonic vibration device for ultrasonic edm processing as above, the power of ultrasonic generator is 50W.
Further, a kind of workpiece attached supersonic vibration device for ultrasonic edm processing as above, frock is fixed by welding in the top of ultrasonic amplitude bar.
Further, a kind of workpiece attached supersonic vibration device for ultrasonic edm processing as above, when applying this workpiece attached supersonic vibration device, micro EDM parameter is: pulsewidth is between 100 ~ 200 μ s, arteries and veins be 100 ~ 200 μ s, pulsewidth: between arteries and veins=and 1:1; Average current, voltage are constant, and in process, power supply energy is constant; Individual pulse energy and discharging gap increase along with the increase of pulsewidth; Peak point current is 0.9 ~ 1.65A, and open-circuit voltage is 150 ~ 200V, and reference servo voltage is 55 ~ 70V.
Further, a kind of workpiece attached supersonic vibration device for ultrasonic edm processing as above, the constrictor of the workpiece of processing to be aspect ratio be 1:16, material is 1Cr18Ni9, and machined parameters is: ultrasonic generator supersonic frequency is 45kHz, ultrasonic power output is 50%x50W=25W, pulsewidth is 100 μ s, is 100 μ s, peak point current 1.05A (14x0.075A=1.05A) between arteries and veins, open-circuit voltage is 150V, and reference servo voltage is 70V.
The beneficial effect in technique scheme is adopted to be:
(1) form ultrasonic wave added vibrating device 1 to overlap, utilize this device to complete the ultrasonic wave vibration assist spark machined of Workpiece vibration;
(2) under ultrasonic wave added vibration adaptation parameter assembled state, processing aspect ratio >=15;
(3) under ultrasonic wave added vibration adaptation parameter assembled state, working (machining) efficiency improves more than 1 times;
(4) under ultrasonic wave added vibration adaptation parameter assembled state, export license reduces 30%.
Accompanying drawing explanation
Fig. 1 is the joint construction form of friction welded joint structural representation of the present invention and formation;
Fig. 2 is ultrasonic transformer distribution situation schematic diagram.
In figure: 1 ultrasonic generator, 2 piezoelectric ceramic transducers, 3 ultrasonic transformers, 4 frocks, 5 workpiece.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical solution of the present invention is described in detail.
As shown in Figure 1, a kind of workpiece attached supersonic vibration device for ultrasonic edm processing of the present invention, the ultrasonic wave added being applicable to workpiece vibrates fine Fine and Deep Hole spark machined, in edm process, workpiece is fixed in ultrasonic workbench, the high-frequency electrical energy of ultrasonic generator is changed into mechanical energy, workpiece is driven to do ultrasonic vibration, assist spark machined; Specifically comprise as lower component:
(1) ultrasonic generator
By ultrasonic generator, industrial-frequency alternating current is changed into the supersonic frequency electric oscillation with power stage, power output and frequency continuously adjustabe in setting range; Ultrasonic generator supersonic frequency is 28kHz and 45kHz, 45kHz is basic frequency, and 28kHz is resonant frequency; Ultrasonic power 50W, power adjustable, power output adjusting range is the power stage of 40% ~ 100%;
(2) piezoelectric ceramic transducer
Piezoelectric ceramic transducer is tubular structure, and the supersonic frequency electric oscillation utilizing piezo-electric effect to be provided by ultrasonic generator converts mechanical oscillation to;
(3) ultrasonic transformer
In transducer, axially 3 ultrasonic transformers are set, 3 ultrasonic transformers to be uniformly distributed and the axial location of distance piezoelectric ceramic transducer is identical along piezoelectric ceramic transducer circumferencial direction, the structure of each ultrasonic transformer is the up-thin-low-thick frustum cone structure that upper base diameter is less than diameter of going to the bottom, and is expanded by ultrasonic amplitude by ultrasonic transformer;
(4) frock
Workpiece is connected to workpiece attached supersonic vibration device by frock, and the mechanical oscillation of ultrasonic generator pass to workpiece after ultrasonic transformer amplifies; Frock is the tubular structure identical with the diameter of piezoelectric ceramic transducer, and directly connect with ultrasonic transformer by welding, the frock center of circle overlaps with the center of circle of piezoelectric ceramic transducer.
In the present embodiment, the diameter of piezoelectric ceramic transducer is 40mm; Each ultrasonic transformer is upper base diameter is 2mm, and diameter of going to the bottom is 4mm, and length is the up-thin-low-thick frustum cone structure of 30mm; The cylinder of frock to be diameter be 40mm.Ultrasonic generator is double-frequency ultrasound wave producer, and the power of ultrasonic generator is 50W.Frock is fixed by welding in the top of ultrasonic amplitude bar.
Further, a kind of workpiece attached supersonic vibration device for ultrasonic edm processing as above, when applying this workpiece attached supersonic vibration device, micro EDM parameter is: pulsewidth is between 100 ~ 200 μ s, arteries and veins be 100 ~ 200 μ s, pulsewidth: between arteries and veins=and 1:1; Average current, voltage are constant, and in process, power supply energy is constant; Individual pulse energy and discharging gap increase along with the increase of pulsewidth; Peak point current is 0.9 ~ 1.65A, and open-circuit voltage is 150 ~ 200V, and reference servo voltage is 55 ~ 70V.
The constrictor that the workpiece of this workpiece attached supersonic vibration device processing for ultrasonic edm processing of use the present invention can be aspect ratio is 1:16, material is 1Cr18Ni9, machined parameters is: ultrasonic generator supersonic frequency is 45kHz, ultrasonic power output is 50%x50W=25W, pulsewidth is 100 μ s, is 100 μ s, peak point current 1.05A (14x0.075A=1.05A) between arteries and veins, open-circuit voltage is 150V, and reference servo voltage is 70V.
Claims (7)
1. the workpiece attached supersonic vibration device for ultrasonic edm processing, the ultrasonic wave added being applicable to workpiece vibrates fine Fine and Deep Hole spark machined, it is characterized in that: in edm process, workpiece is fixed in ultrasonic workbench, the high-frequency electrical energy of ultrasonic generator is changed into mechanical energy, workpiece is driven to do ultrasonic vibration, assist spark machined; Specifically comprise as lower component:
(1) ultrasonic generator
By ultrasonic generator, industrial-frequency alternating current is changed into the supersonic frequency electric oscillation with power stage, power output and frequency continuously adjustabe in setting range; Ultrasonic generator supersonic frequency is 28kHz and 45kHz, 45kHz is basic frequency, and 28kHz is resonant frequency; Ultrasonic power 50W, power adjustable, power output adjusting range is the power stage of 40% ~ 100%;
(2) piezoelectric ceramic transducer
Piezoelectric ceramic transducer is tubular structure, and the supersonic frequency electric oscillation utilizing piezo-electric effect to be provided by ultrasonic generator converts mechanical oscillation to;
(3) ultrasonic transformer
In transducer, axially 3 ultrasonic transformers are set, 3 ultrasonic transformers to be uniformly distributed and the axial location of distance piezoelectric ceramic transducer is identical along piezoelectric ceramic transducer circumferencial direction, the structure of each ultrasonic transformer is the up-thin-low-thick frustum cone structure that upper base diameter is less than diameter of going to the bottom, and is expanded by ultrasonic amplitude by ultrasonic transformer;
(4) frock
Workpiece is connected to workpiece attached supersonic vibration device by frock, and the mechanical oscillation of ultrasonic generator pass to workpiece after ultrasonic transformer amplifies; Frock is the tubular structure identical with the diameter of piezoelectric ceramic transducer, and directly connect with ultrasonic transformer by welding, the frock center of circle overlaps with the center of circle of piezoelectric ceramic transducer.
2. as claimed in claim 1 a kind of for ultrasonic edm processing workpiece attached supersonic vibration device, it is characterized in that: the diameter of piezoelectric ceramic transducer is 40mm; Each ultrasonic transformer is upper base diameter is 2mm, and diameter of going to the bottom is 4mm, and length is the up-thin-low-thick frustum cone structure of 30mm; The cylinder of frock to be diameter be 40mm.
3. as claimed in claim 2 a kind of for ultrasonic edm processing workpiece attached supersonic vibration device, it is characterized in that: ultrasonic generator is double-frequency ultrasound wave producer.
4. as claimed in claim 3 a kind of for ultrasonic edm processing workpiece attached supersonic vibration device, it is characterized in that: the power of ultrasonic generator is 50W.
5. as claimed in claim 1 a kind of for ultrasonic edm processing workpiece attached supersonic vibration device, it is characterized in that: frock is fixed by welding in the top of ultrasonic amplitude bar.
6. as claimed in claim 1 a kind of for ultrasonic edm processing workpiece attached supersonic vibration device, it is characterized in that: when applying this workpiece attached supersonic vibration device, micro EDM parameter is: pulsewidth is between 100 ~ 200 μ s, arteries and veins be 100 ~ 200 μ s, pulsewidth: between arteries and veins=1:1; Average current, voltage are constant, and in process, power supply energy is constant; Individual pulse energy and discharging gap increase along with the increase of pulsewidth; Peak point current is 0.9 ~ 1.65A, and open-circuit voltage is 150 ~ 200V, and reference servo voltage is 55 ~ 70V.
7. as claimed in claim 1 a kind of for ultrasonic edm processing workpiece attached supersonic vibration device, it is characterized in that: the constrictor of the workpiece of processing to be aspect ratio be 1:16, material is 1Cr18Ni9, machined parameters is: ultrasonic generator supersonic frequency is 45kHz, and ultrasonic power output is 50%x50W=25W, and pulsewidth is 100 μ s, be 100 μ s between arteries and veins, peak point current 1.05A (14x0.075A=1.05A), open-circuit voltage is 150V, and reference servo voltage is 70V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182198.4A CN104842029A (en) | 2015-04-17 | 2015-04-17 | Workpiece additional ultrasonic vibration device for ultrasonic electrical discharge machining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182198.4A CN104842029A (en) | 2015-04-17 | 2015-04-17 | Workpiece additional ultrasonic vibration device for ultrasonic electrical discharge machining |
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| CN104842029A true CN104842029A (en) | 2015-08-19 |
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| CN201510182198.4A Pending CN104842029A (en) | 2015-04-17 | 2015-04-17 | Workpiece additional ultrasonic vibration device for ultrasonic electrical discharge machining |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215487A (en) * | 2015-10-23 | 2016-01-06 | 山东大学 | A kind of fine high-efficiency machining method towards non-conductive hard brittle material and device |
| CN106312213A (en) * | 2016-11-08 | 2017-01-11 | 中北大学 | Ultrasonic-assisted electrical discharge machining device |
| CN107186304A (en) * | 2017-07-17 | 2017-09-22 | 山东大学 | The vibration servicing unit of many many micropores of tool-electrode synchronous rotary electro-discharge machining and its application |
| CN107900474A (en) * | 2017-10-23 | 2018-04-13 | 四川大学 | A kind of insulation system for ultrasonic edm processing |
| CN110052679A (en) * | 2019-04-22 | 2019-07-26 | 西安航天发动机有限公司 | A kind of profound and subtle hole ultrasound auxiliary electric spark system of processing based on fliud flushing in main shaft |
| CN115125602A (en) * | 2022-05-27 | 2022-09-30 | 广州大学 | Ultrasonic electroplating method and device for drill bit |
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| CN101456095A (en) * | 2009-01-05 | 2009-06-17 | 大连理工大学 | Quick discharging method of material to be removed in electric spark machining |
| CN201625897U (en) * | 2010-04-02 | 2010-11-10 | 绍兴文理学院 | Polishing machine |
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| CN104028867A (en) * | 2014-05-06 | 2014-09-10 | 苏州市职业大学 | Piezoelectric vibrator of ultrasonic electric spark machining device |
| CN204221153U (en) * | 2014-03-31 | 2015-03-25 | 青岛科技大学 | A kind of fixture of ultrasonic disturbance electrolyte micropore Electrolyzed Processing |
| CN107630128A (en) * | 2017-08-07 | 2018-01-26 | 蔡晋 | The ladder array formula ultrasonic shot peening intensifying device and method of a kind of fan blade |
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| JPH09290325A (en) * | 1996-04-26 | 1997-11-11 | Mitsubishi Electric Corp | Method and device for electric discharge machining |
| CN1824444A (en) * | 2006-01-20 | 2006-08-30 | 南京航空航天大学 | Ultrasonic electrolysis compounding micro processing method and device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215487A (en) * | 2015-10-23 | 2016-01-06 | 山东大学 | A kind of fine high-efficiency machining method towards non-conductive hard brittle material and device |
| CN106312213A (en) * | 2016-11-08 | 2017-01-11 | 中北大学 | Ultrasonic-assisted electrical discharge machining device |
| CN106312213B (en) * | 2016-11-08 | 2018-06-08 | 中北大学 | Electrical discharge machining ultrasonic wave added device |
| CN107186304A (en) * | 2017-07-17 | 2017-09-22 | 山东大学 | The vibration servicing unit of many many micropores of tool-electrode synchronous rotary electro-discharge machining and its application |
| CN107186304B (en) * | 2017-07-17 | 2023-05-12 | 山东大学 | Vibration auxiliary device for synchronous rotary electric discharge machining of multiple micro holes of multiple tool electrodes and application of vibration auxiliary device |
| CN107900474A (en) * | 2017-10-23 | 2018-04-13 | 四川大学 | A kind of insulation system for ultrasonic edm processing |
| CN110052679A (en) * | 2019-04-22 | 2019-07-26 | 西安航天发动机有限公司 | A kind of profound and subtle hole ultrasound auxiliary electric spark system of processing based on fliud flushing in main shaft |
| CN115125602A (en) * | 2022-05-27 | 2022-09-30 | 广州大学 | Ultrasonic electroplating method and device for drill bit |
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Application publication date: 20150819 |
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