CN103817387B - Aviation grid part electric discharge machining method and its device - Google Patents
Aviation grid part electric discharge machining method and its device Download PDFInfo
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- CN103817387B CN103817387B CN201410083608.5A CN201410083608A CN103817387B CN 103817387 B CN103817387 B CN 103817387B CN 201410083608 A CN201410083608 A CN 201410083608A CN 103817387 B CN103817387 B CN 103817387B
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- 238000003754 machining Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 239000012224 working solution Substances 0.000 claims abstract description 25
- 239000002828 fuel tank Substances 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000009760 electrical discharge machining Methods 0.000 abstract description 14
- 238000010892 electric spark Methods 0.000 abstract description 8
- 238000002604 ultrasonography Methods 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The present invention relates to a kind of aviation grid part electric discharge machining method and its device, the electric discharge machining method is that ultrasonic wave is introduced in electrical discharge machining, workpiece and fluid dielectric coolant is set to make ultrasonic vibration, ultrasound acoustic part is fastened on electric spark machine tool workbench side, and the square-wave pulse power source of electrical discharge machining is added on tool-electrode and workpiece；Main shaft makees servo feed during processing, workpiece end face is made ultrasonic vibration.The electric discharge machining apparatus include working liquid container and workbench, ultrasonic vibration system, spark discharge system and the fuel tank for setting are matched with working liquid container；Working solution is filled with working liquid container；Ultrasonic generator is be arranged at working liquid container inner bottom part a pair.Electric discharge machining method of the invention is simple, convenient, and high in machining efficiency, tool electrode loss is few, and electrode low cost, crudy is good.Electric discharge machining apparatus structure design of the invention is simple, rationally, using safe and reliable, high in machining efficiency, quality is high.
Description
Technical field
The present invention relates to aviation field parts machining technical field, more particularly to a kind of aviation grid part electric spark
Processing method and its device.
Background technology
Aviation part air-inlet grille at this stage is all processed by spark-erosion machine tool, is the electricity by spark-erosion machine tool
Ablation can be carried out to achieve the goal with heat energy, and the grid that modern Aviation is used all is titanium alloy material, electrical discharge machining titanium alloy
Comparatively efficiency is low.And in substantial amounts of use titanium alloy in modern Aviation, titanium alloy is kind of a unmanageable material, with current
The processing efficiency of processing mode does not catch up with the demand of aviation much, so must seek more preferably processing method solving
The low problem of efficiency.
With developing rapidly for China's Aerobiz, what titanium alloy material was used is more and more.Aircraft type is increasingly
Variation, required grille-like size also becomes increasingly complex.Current most domestic is all processed using electric spark, due to lattice
Grid are just processed after having the putting of multi-angle in processing, so result in what is carried out after electrode and feature contacts in processing
Be cusp electric discharge, this discharge mode be highly detrimental to processing, easily knot carbon and arc discharge, so occur as soon as burn, dross and
Lesion electrode.The grid of certain model part plane in processing is up between 74 degree, Kong Yukong with the angle that electrode is formed
Wall thickness 0.5mm, inlet face is in the edge of a knife, and easily quality requirement is influenceed into nick shaped in processing, and material is again titanium alloy, at this
Can only change discharge parameter in the case of kind to obtain the quality of stabilization, but processing efficiency is lower, delays the duration.Cell structure
Variation cause that size and dimension to be processed only has 16 very much with the acute angle of the 2.53x2.53 diamond holes to be processed of difficulty
Degree, the wedge angle loss of electrode is very serious in process, thus affects quality and reduces efficiency, while also frequent
Change copper-tungsten electrode and increased cost.
Several respects are haveed the shortcomings that using the electrical discharge machining grid part of single energy field at present：Production efficiency is relatively low,
Export license a larger increase cost, quality less stable.In electrical discharge machining, short circuit, open circuit, electric arc pulse situations such as go out
Now so that effective spark discharge is reduced, so as to have impact on processing efficiency.Due to surface tension, cohesive force of solid-liquid material etc. because
Element, in discharge process, the material being melted tends not to dish out completely, so that have impact on crudy.
The content of the invention
The present invention is relatively low in order to solve existing electrical discharge machining grid part production efficiency, and export license is larger, processing
The problems such as high cost, quality less stable and propose that a kind of processing efficiency is higher, tool electrode loss is significantly reduced, electrode cost
Significantly reduce and aviation grid part electric discharge machining method and its device that crudy is significantly improved.
The present invention is achieved by the following technical solutions：
Above-mentioned aviation grid part electric discharge machining method, is that ultrasonic wave is introduced in electrical discharge machining, makes workpiece
Make ultrasonic vibration with fluid dielectric coolant, ultrasound acoustic part is fastened on electric spark machine tool workbench side, electrical discharge machining
Square-wave pulse power source is added on tool-electrode and workpiece；Meanwhile, main shaft makees servo feed during processing, surpasses workpiece end face
Acoustic vibration.
Aviation grid part electric discharge machining method, wherein：Before ultrasonic wave is introduced in electrical discharge machining,
First, frock is arranged on the workbench of lathe and is corrected, then grid part is arranged in frock；Secondly, correction is installed
Electrode, i.e., fit together electrode and connecting plate and be installed along with being corrected on machine tool chief axis；Then, with electrode in lattice
Initial point position is found on grid part；And then, the discharge parameter of processing is set in electrical control cubicles, in ultrasonic wave controller
On set parameter；Preferably, oil pump, ultrasonic vibration controller and electrical control cubicles are started successively, into machining state.
A kind of aviation grid part electric discharge machining apparatus, including working liquid container and being matched with the working liquid container sets
Workbench, ultrasonic vibration system, spark discharge system, ultrasonic generator, ultrasonic vibration controller and the fuel tank put；The work
Make in liquid case filled with working solution；The spark discharge system includes being arranged at the Z axis servo system on the outside of the working liquid container
System, the servo principal axis located at the Z axis servo-drive system bottom side, the electrode being installed on the main shaft and it is arranged at the work
Liquid case outside and the pulse power source control electricity cabinet electrically connected with the Z axis servo-drive system；The workbench is used to place workpiece
One end is arranged in inside the working liquid container；The ultrasonic generator is the one of the inner bottom part that matching is arranged at the working liquid container
Right, a pair of described ultrasonic generators are dipped in the working solution completely；The ultrasonic vibration controller is located at the working solution
The outside of case, its wire is connected with a pair of described ultrasonic generators respectively；Described electrode one end is immersed in the working solution simultaneously
It is connected with the absorption surface being placed on the workbench.
Aviation grid part electric discharge machining apparatus, wherein：The bottom of the servo principal axis passes through connecting rod water
Safety is equipped with connecting plate；The connecting plate keeps a determining deviation with the liquid level of the working solution；The top of the electrode is connected to
Described connecting plate one end bottom surface, bottom is immersed in the working solution.
Aviation grid part electric discharge machining apparatus, wherein：The work is arranged at the top of the workbench
Liquid case inside and it is provided with frock；The frock includes being fixedly arranged on the base portion of the bench-top and is fixedly arranged on the base vertically
The support bar of portion's top surface；The base portion is dipped in the working solution completely；The top of the support bar is slightly to the working solution
Ullage stretches out；The workpiece is leaned to and is connected in the support bar side and can in good time being contacted with the bottom of the electrode.
Aviation grid part electric discharge machining apparatus, wherein：The fuel tank is arranged at the outer of the working liquid container
Side, it passes through oil pipe and connects the working liquid container.
Beneficial effect：
Aviation grid part electric discharge machining method of the present invention is skillfully constructed, simple, convenient, wherein by electricity
Ultrasonic wave is introduced in spark processing, workpiece and fluid dielectric coolant is made ultrasonic vibration, ultrasound acoustic part is fastened on electrical spark working
Work platen side, the square-wave pulse power source of electrical discharge machining is added on tool-electrode and workpiece；Main shaft is made during processing
Servo feed, workpiece end face makees ultrasonic vibration；The ultrasonic edm Compound Machining titanium alloy grid part of this use Multi-energy field
Method, not only significantly improve the processing efficiency of grid part, and tool electrode loss is significantly reduced, and significantly reduce
Electrode cost, makes the grid part obtain more preferable surface quality.
Aviation of the present invention is simple, rationally with grid part electric discharge machining apparatus structure design, using safe and reliable, its
In, by setting a pair of ultrasonic generators in working liquid container, it is many that a pair of ultrasonic generators are used together i.e. formation with electrode
The ultrasonic edm Compound Machining of energy field, processing efficiency is higher, and export license is greatly reduced, and significantly improves grid part
Crudy.
Brief description of the drawings
Fig. 1 is the operational flowchart of aviation grid part electric discharge machining method of the present invention；
Fig. 2 is the structural representation of aviation grid part electric discharge machining apparatus of the present invention.
Specific embodiment
Aviation of the present invention grid part electric discharge machining method, it is that ultrasonic wave is introduced in electrical discharge machining, makes work
Part and fluid dielectric coolant make ultrasonic vibration, and ultrasound acoustic part is fastened on electric spark machine tool workbench side, electrical spark working
The square-wave pulse power source of work is added on tool-electrode and workpiece；Meanwhile, main shaft makees servo feed during processing, makees workpiece end face
Ultrasonic vibration.
Wherein, as shown in figure 1, before introducing ultrasonic wave in electrical discharge machining, first, frock is arranged on lathe
Corrected on workbench, then grid part is arranged in frock；Secondly, correcting electrode is installed, i.e., electrode and connecting plate is assembled
Together and it is installed along with being corrected on machine tool chief axis；Then, initial point position is found on grid part with electrode；Tightly
Then, the discharge parameter of processing is set in electrical control cubicles, parameter is set on ultrasonic wave controller；Finally, open successively
Dynamic oil pump, ultrasonic vibration controller and electrical control cubicles, into machining state.
Wherein, when ultrasonic vibration is not added with, the discharge pulse utilization rate of electric spark finishing is 3~5%;Shaken plus ultrasound
After dynamic, effective discharge pulse utilization rate of electric spark finishing can bring up to more than 50%, so as to improve 2~20 times of productivity ratio.
More it is small area, the processing of small consumption, the raising of productivity ratio is the more.
It is as shown in Fig. 2 aviation of the present invention grid part electric discharge machining apparatus including working liquid container 1, workbench 2, super
Acoustic vibration system 3, spark discharge system 4 and fuel tank 5.
Working liquid container 1 is that working solution 6 is filled with stereoscopic operation liquid case, its case.
Workbench 2 matches the bottom side for being installed in working liquid container 1, and its top is arranged in the inside of working liquid container 1 and is provided with frock
21, the frock 21 includes base portion 211 and support bar 212；The base portion 211 is top surface that is cylindric and being fixedly arranged on workbench 2, and it is complete
It is dipped in working solution 6 entirely；The support bar 212 is fixedly arranged on the top surface of base portion 211 vertically, and its top ends slightly stretches out the liquid of working solution 6
Face top certain distance；Workpiece 7 is leaned in the side of the support bar 212.
Ultrasonic vibration system 3 mainly using ultrasound effect of vibration, forces working solution to flow, and reduce break pulse and
Electric arc pulse, so as to increase actual spark electric discharge ratio（50%）, it includes ultrasonic generator 31 and ultrasonic vibration controller 32；
The ultrasonic generator 31 is arranged at a pair of the inner bottom part of working liquid container 1 for matching, and this pair ultrasonic generators 31 are symmetrically positioned in
The opposite sides at the top of workbench 2, i.e., including the first ultrasonic generator 311 and the second ultrasonic generator 312；Wherein, this first
Ultrasonic generator 311 stands in the inner bottom part of working liquid container 1 and is dipped in completely in working solution 6 vertically, and its one side is close to work
The one side of platform 2；Second ultrasonic generator 312 also stands in the inner bottom part of working liquid container 1 and is also dipped in working solution 6 completely vertically
In, its one side is close to the another side of workbench 2.The ultrasonic vibration controller 32 is located at the outside of working liquid container 1 and leads to
Wire is crossed to be connected with the first ultrasonic generator 311 and the second ultrasonic generator 312 respectively.
Spark discharge system 4 includes Z axis servo-drive system 41, servo principal axis 42, connecting plate 43, electrode 44 and the pulse power
The electric cabinet 45 of control.The Z axis servo-drive system 41 matching is arranged at the top of working liquid container 1；The servo principal axis 42 are installed in Z axis and watch vertically
The bottom side of dress system 41, its bottom is provided with connecting rod 421；The connecting plate 43 is horizontally located in the bottom of servo principal axis 42, i.e.,
One end top surface is connected to the bottom of connecting rod 421 of servo principal axis 42；The one end of electrode 44 is connected to the other end bottom of connecting plate 43
Portion, the other end of the electrode 44 then immerses in working solution 6 and is connected with the contact of workpiece 7.The pulse power source control electricity cabinet 45 be for
Ensure the synchronization of ultrasonic vibration and electric spark pulsed discharge, when tool-electrode is near workpiece, exactly duration of pulse,
When tool-electrode is away from workpiece, exactly interval time of pulse；The pulse power source control electricity matching of cabinet 45 is arranged at working solution
The outside of case 1, it is electrically connected with Z axis servo-drive system 41.Wherein, the working solution 6 in the bottom surface of the connecting plate 43 and working liquid container 1
Liquid level keep a determining deviation；Connecting rod 421 and connecting plate 43 can be driven to rotate together when servo principal axis 42 are rotated.
Fuel tank 5 is arranged at the outside of working liquid container 1, and it connects working liquid container 1 by oil pipe.
Aviation grid part electric discharge machining method of the present invention is skillfully constructed, and simple, convenient, it uses Multi-energy field
The compound processing method machining titanium alloy grid part of ultrasonic edm, not only obtained significantly carrying in terms of processing efficiency
High, tool electrode loss is significantly reduced, and significantly reduces electrode cost, grid part has been obtained more preferable surface matter
Amount.
Aviation of the present invention is simple, rationally with grid part electric discharge machining apparatus structure design, using safe and reliable and add
Work efficiency high, meanwhile, tool electrode loss is smaller, the crudy of grid part is significantly improved, be suitable to promote with
Using.
Claims (2)
1. a kind of aviation grid part electric discharge machining apparatus, including working liquid container and setting is matched with the working liquid container
Workbench, ultrasonic vibration system, spark discharge system, ultrasonic generator, ultrasonic vibration controller and fuel tank；The work
Working solution is filled with liquid case；The spark discharge system include being arranged at Z axis servo-drive system on the outside of the working liquid container,
Servo principal axis located at the Z axis servo-drive system bottom side, the electrode being installed on the servo principal axis and it is arranged at the work
Make liquid case outside and the pulse power source control electricity cabinet electrically connected with the Z axis servo-drive system；It is characterized in that：The workbench is used
It is arranged in inside the working liquid container in the one end for placing workpiece；
The ultrasonic generator is a pair of the inner bottom part that matching is arranged at the working liquid container, a pair of described ultrasonic generators
It is dipped in completely in the working solution；
The ultrasonic vibration controller be located at the working liquid container outside, its wire respectively with a pair of described ultrasonic generators
Connection；
Described electrode one end is immersed in the working solution and is connected with the absorption surface being placed on the workbench；
The bottom of the servo principal axis is horizontally installed with connecting plate by connecting rod；The liquid level of the connecting plate and the working solution
Keep a determining deviation；The top of the electrode is connected to described connecting plate one end bottom surface, and bottom is immersed in the working solution；
The fuel tank is arranged at the outside of the working liquid container, and it passes through oil pipe and connects the working liquid container.
2. aviation as claimed in claim 1 grid part electric discharge machining apparatus, it is characterised in that：The top of the workbench
Portion is arranged in the working liquid container inside and is provided with frock；
The frock includes being fixedly arranged on the base portion of the bench-top and being fixedly arranged on the support bar of the top base surface vertically；
The base portion is dipped in the working solution completely；The top of the support bar is slightly stretched out to the ullage of the working solution；
The workpiece is leaned to and is connected in the support bar side and can in good time being contacted with the bottom of the electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083608.5A CN103817387B (en) | 2014-03-07 | 2014-03-07 | Aviation grid part electric discharge machining method and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083608.5A CN103817387B (en) | 2014-03-07 | 2014-03-07 | Aviation grid part electric discharge machining method and its device |
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| CN103817387A CN103817387A (en) | 2014-05-28 |
| CN103817387B true CN103817387B (en) | 2017-07-11 |
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| CN104741719B (en) * | 2015-03-30 | 2017-04-05 | 沈阳飞机工业（集团）有限公司 | A kind of positioning fixture and processing method of gate hole of drawing squares on Irregular Boundary Surface part |
| TWI615233B (en) * | 2016-11-29 | 2018-02-21 | 財團法人金屬工業研究發展中心 | Apparatus for ultrasonic-assisted machining |
| CN107363350B (en) * | 2017-09-12 | 2023-07-18 | 天津科技大学 | Non-contact electric spark machining system |
| CN111360343A (en) * | 2020-03-25 | 2020-07-03 | 北京市电加工研究所 | Generating type thin-wall part machining equipment and method |
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| US3072777A (en) * | 1960-03-25 | 1963-01-08 | Elox Corp Michigan | High frequency electrode vibration |
| DE2355675A1 (en) * | 1972-11-10 | 1974-05-22 | Rolls Royce 1971 Ltd | METHOD AND DEVICE FOR MACHINING WORKPIECES |
| JPS62152620A (en) * | 1985-12-26 | 1987-07-07 | Matsushita Electric Ind Co Ltd | Electric discharge machine |
| JPH02279227A (en) * | 1989-04-20 | 1990-11-15 | Canon Inc | Electric discharge machining apparatus |
| JP3253812B2 (en) * | 1994-10-17 | 2002-02-04 | 松下電器産業株式会社 | Electric discharge machine |
| JP2004058222A (en) * | 2002-07-30 | 2004-02-26 | Mitsubishi Electric Corp | Discharge surface treatment device and method |
| CN1265927C (en) * | 2003-11-03 | 2006-07-26 | 深圳大学 | Vibration stirring type worktable of electron discharge machine tool |
| CN101085483A (en) * | 2007-06-22 | 2007-12-12 | 哈尔滨工业大学 | Combinational processing method for micro-array axle hole |
| CN201154409Y (en) * | 2008-01-28 | 2008-11-26 | 欧群科技股份有限公司 | Extension principal axis of discharging processor |
| US20090314748A1 (en) * | 2008-06-21 | 2009-12-24 | United Technologies Corporation | Ultrasonic assisted electrodischarge machining |
| CN103418865B (en) * | 2013-08-30 | 2016-03-23 | 哈尔滨工业大学深圳研究生院 | The Micro-edm Equipments that a kind of ultrasonic modulation electrostatic induction drives |
| CN103480928A (en) * | 2013-09-16 | 2014-01-01 | 山东大学 | Ultrasonic-vibration micro electric discharge machining workbench |
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Owner name: HUANG HAIJI Free format text: FORMER OWNER: CHENGDU MINJIE MANUFACTURING ENGINEERING CO., LTD. Effective date: 20150521 |
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