CN103817387A - Aviation grille part EDM (electrical discharge machining) method and device thereof - Google Patents
Aviation grille part EDM (electrical discharge machining) method and device thereof Download PDFInfo
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- CN103817387A CN103817387A CN201410083608.5A CN201410083608A CN103817387A CN 103817387 A CN103817387 A CN 103817387A CN 201410083608 A CN201410083608 A CN 201410083608A CN 103817387 A CN103817387 A CN 103817387A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000009760 electrical discharge machining Methods 0.000 title abstract description 13
- 238000003754 machining Methods 0.000 claims abstract description 44
- 239000012224 working solution Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 43
- 238000010892 electric spark Methods 0.000 claims description 8
- 239000002828 fuel tank Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000000110 cooling liquid Substances 0.000 abstract 1
- 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
- 230000005611 electricity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003672 processing method 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
- 229910052799 carbon Inorganic materials 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 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
- 230000013011 mating Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention relates to an aviation grille part EDM (electrical discharge machining) method and a device thereof. The EDM method is characterized in that ultrasonic waves are introduced into the EDM, a workpiece and a cooling liquid are subjected to ultrasonic vibration, an ultrasonic acoustic component is fastened to the side of an EDM machine tool worktable, and a square wave pulse power supply used for the EDM is applied to a tool electrode and the workpiece; during machining, a main shaft is used for servo feeding, so the end surface of the workpiece is subjected to ultrasonic vibration. The EDM device comprises a working solution box, a worktable arranged and matched with the working solution box, an ultrasonic vibration system, an electrical discharge system and an oil tank; the working solution box is filled with a working solution; a pair of ultrasonic generators are arranged on the bottom in the working solution box. The EDM method disclosed by the invention has the advantages of being simple and convenient to operate, high in machining efficiency, less in tool electrode loss, low in electrode cost and high in machining quality. The EDM device is simple and reasonable in structural design, safe and reliable to use, high in machining efficiency and high in machining quality.
Description
Technical field
The present invention relates to aviation field parts machining technical field, relate in particular to a kind of aviation grid part electric discharge machining method and device thereof.
Background technology
The aviation part air-inlet grille of present stage is all processed by spark-erosion machine tool, to carry out ablation to achieve the goal by electric energy and the heat energy of spark-erosion machine tool, and the grid that modern Aviation uses is all titanium alloy material, spark machined titanium alloy comparatively speaking efficiency is low.And in modern Aviation at a large amount of use titanium alloys, titanium alloy is kind of a unmanageable material, does not catch up with the demand of aviation with the working (machining) efficiency of current processing mode far away, solves inefficient problem so must seek better processing method.
Along with the develop rapidly of China's Aerobiz, what titanium alloy material was used is more and more.Aircraft type is more and more diversified, and required grille-like size also becomes increasingly complex.Most domestic all adopts electric spark to process at present, due to grid just processing after to add man-hour be to have the putting of multi-angle, so just causing what add that man-hour, electrode carried out after contacting with part is cusp electric discharge, this discharge mode is unfavorable for processing very much,, so just there is burn, dross and lesion electrode in knot carbon and arc discharge easily.The grid of certain model add man-hour part plane with electrode form angle up to the 0.5mm of the wall thickness between 74 degree, Kong Yukong, inlet face is the edge of a knife, in processing, very easily become nick shaped to affect quality requirement, material is again titanium alloy, can only change in this case discharge parameter and obtain stable quality, but working (machining) efficiency is lower, delay the duration.The acute angle that the variation of cell structure makes size and dimension to be processed have very much the 2.53x2.53 diamond hole that difficulty will process only has 16 degree, in process, the wedge angle loss of electrode is very serious, so just affect quality and lower efficiency, also change more frequently copper-tungsten electrode has increased cost simultaneously.
Adopt at present single can spark machined grid part exist the shortcoming of several respects: production efficiency is lower, export license a larger increase cost, quality less stable.In spark machined, short circuit, open circuit, the appearance of the situation such as electric arc pulse reduces effective spark discharge, thereby affected working (machining) efficiency.Due to factors such as the cohesive forces of surface tension, solid-liquid material, in discharge process, the material being melted often can not be dished out completely, to such an extent as to has affected crudy.
Summary of the invention
The present invention is lower in order to solve existing spark machined grid part production efficiency, export license is larger, processing cost is high, problems such as quality less stable and to propose a kind of working (machining) efficiency higher, tool electrode loss obviously reduces, electrode cost significantly reduces and crudy is significantly improved aviation grid part electric discharge machining method and device thereof.
The present invention is achieved by the following technical solutions:
Grid part electric discharge machining method for above-mentioned aviation, in spark machined, to introduce ultrasonic wave, make workpiece and fluid dielectric coolant do ultrasonic vibration, ultrasonic acoustic element is fastened on electric spark machine tool workbench side, and the square-wave pulse power source that spark machined is used is added on tool-electrode and workpiece; Meanwhile, add man-hour main shaft and make servo feed, make workpiece end face do ultrasonic vibration.
Grid part electric discharge machining method for described aviation, wherein: introduce ultrasonic wave in spark machined before, first, frock is arranged on the workbench of lathe and proofread and correct, then grid part is arranged in frock; Secondly, correcting electrode is installed, electrode is fitted together with connecting plate and together be arranged on machine tool chief axis and proofread and correct; Then, on grid part, find initial point position with electrode; And then, in electrical control cubicles, set the discharge parameter of processing use, on ultrasonic wave controller, set parameter; Best, start successively oil pump, ultrasonic vibration controller and electrical control cubicles, enter machining state.
Grid part electric discharge machining apparatus for a kind of aviation, comprises working liquid container and mates the workbench, ultrasonic vibration system, spark discharge system, ultrasonic generator, ultrasonic vibration controller and the fuel tank that arrange with described working liquid container; In described working liquid container, be filled with working solution; Described spark discharge system comprise be arranged at described working liquid container outside Z axis servo-drive system, be located at the servo principal axis of described Z axis servo-drive system bottom side, the electric cabinet of pulse power source control that is installed in the electrode on described main shaft and is arranged at described working liquid container outside and be electrically connected with described Z axis servo-drive system; Described workbench is arranged in described working liquid container inside for one end of place work piece; Described ultrasonic generator is inner bottom part a pair of that coupling is arranged at described working liquid container, and described a pair of ultrasonic generator is dipped in described working solution completely; Described ultrasonic vibration controller is positioned at the outside of described working liquid container, and its wire is connected with described a pair of ultrasonic generator respectively; Described electrode one end is immersed in described working solution and with the workpiece contact being placed on described workbench and is connected.
Grid part electric discharge machining apparatus for described aviation, wherein: the bottom of described servo principal axis is horizontally installed with connecting plate by connecting rod; The liquid level of described connecting plate and described working solution keeps a determining deviation; The top of described electrode is connected in bottom surface, described connecting plate one end, and bottom is immersed in described working solution.
Grid part electric discharge machining apparatus for described aviation, wherein: the top of described workbench is arranged in described working liquid container inside and is provided with frock; Described frock comprises the support bar that is fixedly arranged on the base portion of described bench-top and is vertically fixedly arranged on described top base surface; Described base portion is dipped in described working solution completely; Slightly stretch out to the liquid level top of described working solution on the top of described support bar; Described workpiece leans in described support bar one side and can contact and be connected in good time with the bottom of described electrode.
Grid part electric discharge machining apparatus for described aviation, wherein: described fuel tank is arranged at the outside of described working liquid container, it connects described working liquid container by oil pipe.
Beneficial effect:
Aviation of the present invention is skillfully constructed with grid part electric discharge machining method, simple, convenient, wherein by introduce ultrasonic wave in spark machined, make workpiece and fluid dielectric coolant do ultrasonic vibration, ultrasonic acoustic element is fastened on electric spark machine tool workbench side, and the square-wave pulse power source that spark machined is used is added on tool-electrode and workpiece; Add man-hour main shaft and make servo feed, workpiece end face is done ultrasonic vibration; The method of the ultrasonic edm Compound Machining titanium alloy grid part of this employing Multi-energy field, not only significantly improve the working (machining) efficiency of grid part, and tool electrode loss obviously reduces, and significantly reduce electrode cost, made grid part obtain better surface quality.
Aviation of the present invention is simple, reasonable by grid part electric discharge machining apparatus structural design, use safety, reliable, wherein, by a pair of ultrasonic generator is set in working liquid container, this a pair of ultrasonic generator uses the ultrasonic edm Compound Machining that forms Multi-energy field together with electrode, working (machining) efficiency is higher, and export license also reduces greatly, has significantly improved the crudy of grid part.
Accompanying drawing explanation
Fig. 1 is the operational flowchart of aviation of the present invention grid part electric discharge machining method;
Fig. 2 is the structural representation of aviation of the present invention grid part electric discharge machining apparatus.
The specific embodiment
Grid part electric discharge machining method for aviation of the present invention, it is in spark machined, to introduce ultrasonic wave, make workpiece and fluid dielectric coolant do ultrasonic vibration, ultrasonic acoustic element is fastened on electric spark machine tool workbench side, and the square-wave pulse power source that spark machined is used is added on tool-electrode and workpiece; Meanwhile, add man-hour main shaft and make servo feed, make workpiece end face do ultrasonic vibration.
Wherein, as shown in Figure 1, introduce ultrasonic wave in spark machined before, first, frock is arranged on the workbench of lathe and proofread and correct, then grid part is arranged in frock; Secondly, correcting electrode is installed, electrode is fitted together with connecting plate and together be arranged on machine tool chief axis and proofread and correct; Then, on grid part, find initial point position with electrode; And then, in electrical control cubicles, set the discharge parameter of processing use, on ultrasonic wave controller, set parameter; Finally, start successively oil pump, ultrasonic vibration controller and electrical control cubicles, enter machining state.
Wherein, in the time not adding ultrasonic vibration, the accurately machined discharge pulse utilization rate of electric spark is 3～5%; Add after ultrasonic vibration, the accurately machined effective discharge pulse utilization rate of electric spark can be brought up to more than 50%, thereby has improved 2～20 times of productivity ratio.More be small size, the processing of little consumption, the raising of productivity ratio the more.
As shown in Figure 2, grid part electric discharge machining apparatus for aviation of the present invention, comprises working liquid container 1, workbench 2, ultrasonic vibration system 3, spark discharge system 4 and fuel tank 5.
Working liquid container 1 is three-dimensional working liquid container, is filled with working solution 6 in its case.
Aviation of the present invention is skillfully constructed with grid part electric discharge machining method, simple, convenient, it adopts the compound processing method machining titanium alloy grid part of ultrasonic edm of Multi-energy field, not only aspect working (machining) efficiency, be significantly improved, tool electrode loss obviously reduces, and significantly reduced electrode cost, make grid part obtain better surface quality.
Aviation of the present invention is simple, reasonable by grid part electric discharge machining apparatus structural design, and use safely, reliable and working (machining) efficiency is high, and meanwhile, tool electrode loss is less, and the crudy of grid part is significantly improved, and is suitable for propagation and employment.
Claims (6)
1. a grid part electric discharge machining method for aviation, it is characterized in that, in spark machined, to introduce ultrasonic wave, make workpiece and fluid dielectric coolant do ultrasonic vibration, ultrasonic acoustic element is fastened on electric spark machine tool workbench side, and the square-wave pulse power source that spark machined is used is added on tool-electrode and workpiece; Meanwhile, add man-hour main shaft and make servo feed, make workpiece end face do ultrasonic vibration.
2. grid part electric discharge machining method for aviation as claimed in claim 1, is characterized in that: introduce ultrasonic wave in spark machined before, first, frock is arranged on the workbench of lathe and proofread and correct, then grid part is arranged in frock; Secondly, correcting electrode is installed, electrode is fitted together with connecting plate and together be arranged on machine tool chief axis and proofread and correct; Then, on grid part, find initial point position with electrode; And then, in electrical control cubicles, set the discharge parameter of processing use, on ultrasonic wave controller, set parameter; Best, start successively oil pump, ultrasonic vibration controller and electrical control cubicles, enter machining state.
3. an aviation grid part electric discharge machining apparatus for grid part electric discharge machining method for the aviation based on described in the claims 1, comprises working liquid container and mates the workbench, ultrasonic vibration system, spark discharge system, ultrasonic generator, ultrasonic vibration controller and the fuel tank that arrange with described working liquid container; In described working liquid container, be filled with working solution; Described spark discharge system comprise be arranged at described working liquid container outside Z axis servo-drive system, be located at the servo principal axis of described Z axis servo-drive system bottom side, the electric cabinet of pulse power source control that is installed in the electrode on described main shaft and is arranged at described working liquid container outside and be electrically connected with described Z axis servo-drive system; It is characterized in that: described workbench is arranged in described working liquid container inside for one end of place work piece;
Described ultrasonic generator is inner bottom part a pair of that coupling is arranged at described working liquid container, and described a pair of ultrasonic generator is dipped in described working solution completely;
Described ultrasonic vibration controller is positioned at the outside of described working liquid container, and its wire is connected with described a pair of ultrasonic generator respectively;
Described electrode one end is immersed in described working solution and with the workpiece contact being placed on described workbench and is connected.
4. grid part electric discharge machining apparatus for aviation as claimed in claim 3, is characterized in that: the bottom of described servo principal axis is horizontally installed with connecting plate by connecting rod;
The liquid level of described connecting plate and described working solution keeps a determining deviation;
The top of described electrode is connected in bottom surface, described connecting plate one end, and bottom is immersed in described working solution.
5. grid part electric discharge machining apparatus for the aviation as described in claim 3 or 4, is characterized in that: the top of described workbench is arranged in described working liquid container inside and is provided with frock;
Described frock comprises the support bar that is fixedly arranged on the base portion of described bench-top and is vertically fixedly arranged on described top base surface; Described base portion is dipped in described working solution completely; Slightly stretch out to the liquid level top of described working solution on the top of described support bar;
Described workpiece leans in described support bar one side and can contact and be connected in good time with the bottom of described electrode.
6. grid part electric discharge machining apparatus for aviation as claimed in claim 3, is characterized in that: described fuel tank is arranged at the outside of described working liquid container, and it connects described working liquid container by oil pipe.
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 |
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| 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 true CN103817387A (en) | 2014-05-28 |
| CN103817387B CN103817387B (en) | 2017-07-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741719A (en) * | 2015-03-30 | 2015-07-01 | 沈阳飞机工业（集团）有限公司 | Positioning fixture for punching grating holes on irregular curved face part and processing method |
| CN107363350A (en) * | 2017-09-12 | 2017-11-21 | 天津科技大学 | Contactless EDM System |
| 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 |
| 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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Also Published As
| Publication number | Publication date |
|---|---|
| CN103817387B (en) | 2017-07-11 |
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