CN106342005B - Micro hole electric processing method and device - Google Patents
Micro hole electric processing method and deviceInfo
- Publication number
- CN106342005B CN106342005B CN200710080525.0A CN200710080525A CN106342005B CN 106342005 B CN106342005 B CN 106342005B CN 200710080525 A CN200710080525 A CN 200710080525A CN 106342005 B CN106342005 B CN 106342005B
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- China
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- working solution
- processing
- micro hole
- machining
- hollow edged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000003754 machining Methods 0.000 claims abstract description 45
- 239000012224 working solution Substances 0.000 claims abstract description 39
- 238000010892 electric spark Methods 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910021642 ultra pure water Inorganic materials 0.000 claims abstract description 3
- 239000012498 ultrapure water Substances 0.000 claims abstract description 3
- 229910001868 water Inorganic materials 0.000 claims abstract description 3
- 238000009760 electrical discharge machining Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 19
- 239000011159 matrix material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Inorganic materials [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
A kind of micro hole electric processing method and device, belong to electric machining field. The method has combined high-speed electric spark micro hole machining, two kinds of technological measures of Electrolyzed Processing, under same processing stations, same tubular tool electrode and same processing work liquid condition, first carry out high-speed electric spark micro hole machining, carry out again Electrolyzed Processing, the recast layer producing to remove high-speed electric spark processing. This device is mainly made up of lathe matrix, high-speed electric spark processing unit (plant), electrolytic machining device and working solution EGR etc., and working solution adopts running water or deionized water or ultra-pure water. The present invention is without secondary clamping, need to change working solution, has the advantages such as process velocity is fast, simple and practical and workable.
Description
Technical field
The present invention relates to a kind of micro hole electric processing method and device, belong to electric machining field.
Background technology
In Aeronautics and Astronautics manufacturing industry, be widely used with the part of micro hole structure. Micro hole machiningBecome processing content important in Aeronautics and Astronautics manufacturing industry. Spark machined is because its equipment is simple, processingPrecision advantages of higher is adopted at large in micro hole machining field. Spark machined claims again electric discharge processing, and it isIn process, make between instrument and workpiece constantly to produce the spark discharge of pulse feature, when discharging part,The high temperature of instantaneous generation is by conductive material ablation. When the small film cooling holes of spark machined turbo blade, processingAfter hole inner wall surface can form recast layer. Recast layer be the TRANSIENT HIGH TEMPERATURE of spark discharge and working solution fastUnder cooling effect, form on materials processing surface quenching cast sturcture, in tissue, often contain micro-crack. ?Under the effect of alternate load, these micro-cracks very easily spread, so that part generation rupture failure. Thereby aviation,Aerospace manufacturing field, the hole after spark machined must be ground or polishing, to remove electrical spark workingThe recast layer that work produces.
For removal simple in structure, part recast layer that micro hole location layout is single, often adopt abrasive Flow machineThe method that tool grinds. But for the part of this class micro hole location layout complexity of turbo blade, adopt the method to depositThree problems, the one, there is the dead angle of removing not fall in inclined hole two ends; The 2nd, abrasive Flow conventionally easily along resistanceLittle large air film hole is extruded, and the little air film hole that resistance is larger seldom has abrasive particle to pass through, and causes the hole that diameter is large to be groundGreatly, so that overproof, and the less hole recast layer of diameter is difficult to remove. The 3rd, whole technological process needs secondary dressFolder, has extended the process-cycle. For addressing these problems, " fine electric discharge and high dither grind ", " electrolysis withMagnetic grinding Compound Machining ", the method such as " electric discharge processing with electrobrightening Compound Machining " successively proposed. TheseMethod is all by under same processing stations, same processing electrode condition, first in deionized water working solutionComplete electric-spark drilling processing and forming, then change working solution, remove other manufacturing procedure of recast layer. Micro-Thin electric discharge is by changing lapping liquid, workpiece being applied to high dither with high dither attrition process, electroplax withThe effect of lapping liquid is issued to the removal of recast layer; Electrolysis and magnetic grinding Compound Machining are by changing NaNO3Electrolyte, the passivating film that utilizes electrolysis to produce, the grinding cutting power that relies on magnetic abrasive grain to produce, by passivationFilm is removed; Electric discharge processing is to change the electrolyte of phosphoric acid with electrobrightening micropore Compound Machining, micro-to what processElectrobrightening is carried out in hole, eliminates the recast layer of micropore inwall. These methods, for the removal of recast layer, all obtainRatioPreferably processing effect, all needs working solution to change but add at every turn man-hour, and while requiring solution to changeWork nest is cleaned up, otherwise can cause the phase mutual interference between different operating liquid, cause processing undesired.
High-speed electric spark micro hole machining technology is the spark erosion technique that new development is in recent years got up, with traditionThe difference of electric-spark drilling method for processing forming be that it uses hollow edged electrode, add man-hour working solution from tubulose electricityThe ejection of extreme portion, gets rid of galvanic corrosion rapidly except product, add man-hour electrode and do gyration, can make end face loss equalEven, be unlikelyly subject to the reaction force of high pressure, high speed operation liquid and deflection is difficult for short circuit, can process linearity andThe good deep hole of cylindricity, working (machining) efficiency is also far away higher than electric-spark drilling processing and forming. Thereby in Aero-SpaceIn manufacturing industry, high-speed electric spark micro hole machining is now applied widely. But for the removal of recast layer,The method processing effect of the abrasive Flow mechanical lapping often adopting is not good, is badly in need of exploring effective technical measures completeRemove the recast layer that high-speed electric spark micro hole machining produces.
Summary of the invention
The recast layer that the object of the invention is to exist for high-speed electric spark micro hole machining technology is removed difficultyPresent situation, proposes a kind of method and apparatus of the micro hole electric machining without recast layer, micro hole electric processing method withDevice.
The principle of the invention is: at same processing stations, and same hollow edged electrode, same working solution condition for processingUnder, first complete high-speed electric spark micro hole machining, then carry out Electrolyzed Processing, with remove spark machined produceRecast layer.
1, a micro hole electric processing method, is characterized in that comprising the following steps:
(a), in the workpiece clamping table, by clamping workpiece in work tank, work tank is fixed on workbench,Workbench carries out planar motion under the control of the digital control system of lathe, by hollow edged electrode via electrodeGuider is arranged on the terminal clamp of lathe;
(b), open valve, cut-in pressure pump, makes working solution via filter, pressure regulator valve and corresponding liquid streamPipeline enters the hollow edged electrode inside being connected with terminal clamp, and working solution is sprayed from hollow edged electrode end;
(c), connect electrical discharge machining pulse power, control hollow edged electrode servo feed motion, rotatablely move, enterRow high-speed electric spark micro hole machining, working solution flows in work tank, flows back to liquid reserve tank through valve;
(d), complete high-speed electric spark micro hole machining, close electrical discharge machining pulse power, closing presure pump and valveDoor;
(e), hollow edged electrode is continued to lower feeding one segment distance, make hollow edged electrode end exceed workpiece lower surface1-10mm, when ensureing Electrolyzed Processing, micro hole inwall is relative with intact hollow edged electrode surface;
(f), connect intake pump, in work tank, inject working solution, workpiece is immersed in working solution completely,Close intake pump, connect Electrolyzed Processing power supply, carry out Electrolyzed Processing;
(g), complete Electrolyzed Processing, disconnect Electrolyzed Processing power supply, open valve, make the work in work tankLiquid flows back to liquid reserve tank through valve, and terminal clamp return back to processing original state, unloads workpiece.
2, a micro hole electric machining processing unit (plant), it is characterized in that by lathe, workbench, workpiece clamping table,Work tank, high-speed electric spark processing unit (plant), electrolytic machining device, working solution EGR composition; And:
(a), described high-speed electric spark processing unit (plant) is by terminal clamp, hollow edged electrode, electrode guider, electricity fireFlower processing power source composition;
(b), described electrolytic machining device is made up of Electrolyzed Processing power supply, cathode for electrochemical machining, Electrolyzed ProcessingBe high-speed electric spark micro hole machining hollow edged electrode with negative electrode;
(c), described working solution EGR comprises liquid reserve tank, the filter being connected with liquid reserve tank, compression pump,Pressure regulator valve, intake pump, valve and corresponding liquid flowing line.
High-speed electric spark adds man-hour, and working solution is via liquid reserve tank, filter, compression pump, pressure regulator valve and correspondingLiquid flowing line enters the hollow edged electrode inside being connected with terminal clamp, and from the ejection of hollow edged electrode end, working solution againFlow in work tank, flow back to liquid reserve tank through valve; When Electrolyzed Processing, first valve-off, working solution viaLiquid reserve tank, intake pump inject work tank, after Electrolyzed Processing completes, open valve, and working solution flows through valveReturn liquid reserve tank.
Visible, method of the present invention and device characteristic are: 1, high-speed electric spark micro hole machining and follow-up electrolysisProcess in same processing stations, same processing with completing under hollow edged electrode condition, while having ensured follow-up Electrolyzed ProcessingThe micro hole of electrode and spark machined has good axiality, and the final machining state of micro hole is hadHigh accuracy. Without secondary clamping, both avoided Clamped Positioning Error, save again the clamping time, improveWorking (machining) efficiency; 2, use same working solution, saved and changed working solution and work nest is cleanedStep, has avoided the phase mutual interference of working solution, has shortened the leading time, has improved working (machining) efficiency. WorkLiquid is processed after filtration, can be recycled. Owing to adopting running water or deionized water or ultra-pure water as electrolyte,Very friendly to environment, avoid the electrolyte of traditional Electrolyzed Processing to the pollution problem of environment. 3, the methodAnd the device range of work is very extensive, can process all conductive materials.
Brief description of the drawings
Fig. 1 is micro hole electric machining equipment overall structure schematic diagram.
Fig. 2 is the equipment configuration schematic diagram of high-speed electric spark micro hole machining.
Hollow edged electrode and work status schematic diagram when Fig. 3 is high-speed electric spark micro hole machining.
Fig. 4 is Electrolyzed Processing equipment configuration schematic diagram.
Hollow edged electrode and work status schematic diagram when Fig. 5 is Electrolyzed Processing.
Label title in Fig. 1: 1, lathe, 2, terminal clamp, 3, hollow edged electrode, 4, electrode guider, 5,Workpiece, 6, workpiece clamping table, 7, work tank, 8, workbench, 9, valve, 10, intake pump, 11,Pressure regulator valve, 12, compression pump, 13, filter, 14, electrical discharge machining pulse power, 15, Electrolyzed Processing power supply,16, liquid reserve tank, 17, working solution, 18, power lead.
Detailed description of the invention
Shown in Fig. 1, micro hole electric machining device of the present invention, is made up of following part:
(1), comprise the body portion that lathe 1, workbench 8, workpiece clamping table 6, work tank 7 form;
(2), comprise 14 groups of terminal clamps 2, hollow edged electrode 3, electrode guider 4, electrical discharge machining pulse powerThe electric discharge machining apparatus becoming;
(3) electricity that, comprises Electrolyzed Processing power supply 15, forms as the hollow edged electrode 3 of cathode for electrochemical machiningSeparate processing unit (plant);
(4), comprise liquid reserve tank 16, the filter 13 being connected with liquid reserve tank, compression pump 12, pressure regulator valve 11,The working solution EGR of intake pump 10, valve 9 and corresponding liquid flowing line composition.
Shown in Fig. 2 and Fig. 3, middle spark manufacturing procedure of the present invention adopts high-speed electric spark micro hole machining,The difference of itself and Electric Discharge Machining is that it uses hollow edged electrode 3, adds man-hour working solution 17 from tubulose electricityThe utmost point 3 end ejections, get rid of galvanic corrosion rapidly except product, working (machining) efficiency is far away higher than electric-spark drilling processing and forming.
Shown in Fig. 4 and Fig. 5, when Electrolyzed Processing operation, workpiece 5 immerses the work in work tank 7 completelyDo in liquid 17, hollow edged electrode 3 ends exceed workpiece 5 lower surface 1-10mm, and this is because high-speed electric spark addsIn man-hour, can there are losses in hollow edged electrode 3, by hollow edged electrode 3 to lower feeding one segment distance, to ensure that electrolysis addsIn man-hour, micropore inwall is relative with intact hollow edged electrode 3 surfaces.
Below in conjunction with the method for this technique of Fig. 1-5 explanation invention, implementation process is passed through following steps successively:
1, with reference to figure 1, in the workpiece clamping table 6 by workpiece 5 clampings in work tank 7, work tank 7Be fixed on workbench 8, workbench 8 can carry out planar fortune under the control of the digital control system of lathe 1Moving;
2, referring to figs. 2 and 3 and Fig. 4, hollow edged electrode 3 is contained on terminal clamp 2 to hollow edged electrode 3Through electrode guider 4, electrode guider 4 revolves at servo feed motion, electrode in order to ensure hollow edged electrode 3Transhipment has good axial location precision when moving; With power lead 18 by electrical discharge machining pulse power 14 and tubuloseElectrode 3, workpiece 5 connect; With power lead 18 by Electrolyzed Processing power supply 15 and hollow edged electrode 3, workpiece 5Connect;
3, referring to figs. 2 and 3, open valve 9, working solution 17 is under the effect of compression pump 12, via mistakeFilter 13, pressure regulator valve 11 and corresponding liquid flowing line enter terminal clamp 2 inside and are communicated with hollow edged electrode 3,Thereby make working solution 17 from hollow edged electrode 3 end ejections;
4, connect electrical discharge machining pulse power 14, the servo feed of controlling hollow edged electrode 3 moves, rotatablely moves,Carry out high-speed electric spark micro hole machining, working solution 17 flows in work tank 7, flows back to storage through valve 9Liquid case 16;
5, complete high-speed electric spark micro hole machining, close electrical discharge machining pulse power 14, closing presure pump 12With valve 9;
6,, with reference to figure 4 and Fig. 5, hollow edged electrode 3 is continued, to lower feeding one segment distance, to make hollow edged electrode 3End exceeds workpiece (5) lower surface 1-10mm, when ensureing Electrolyzed Processing, and micro hole inwall and intact pipeShape electrode 3 surfaces relatively; Connect intake pump 10, in work tank 7, inject working solution 17, make workpiece 5In submergence working solution 17, close intake pump 10 completely, connect Electrolyzed Processing power supply 15, carry out Electrolyzed Processing;
7, complete Electrolyzed Processing, disconnect Electrolyzed Processing power supply 15, open valve 9, make the work in work tank 7Make liquid 17 and flow back to liquid reserve tank 16, terminal clamp 2 return back to processing original state, unloads workpiece 5.
Claims (3)
1. a micro hole electric processing method, is characterized in that comprising the following steps:
(a) workpiece clamping table (6), by workpiece (5) clamping in work tank (7) is upper, working solutionIt is upper that groove (7) is fixed on workbench (8), and workbench (8) enters under the control of the digital control system of lathe (1)Parallel planes two dimensional motion, is arranged on hollow edged electrode (3) terminal clamp of lathe via electrode guider (4)(2) on;
(b), open valve (9), cut-in pressure pump (12), make working solution (17) via filter (13),Pressure regulator valve (11) and corresponding liquid flowing line enter hollow edged electrode (3) inside being connected with terminal clamp (2),Working solution (17) is sprayed from hollow edged electrode (3) end;
(c), connect electrical discharge machining pulse power (14), the servo feed of controlling hollow edged electrode (3) moves, revolvesTranshipment is moving, carries out high-speed electric spark micro hole machining, and working solution (17) flows in work tank (7), warpCross valve (9) and flow back to liquid reserve tank (16);
(d), complete high-speed electric spark micro hole machining, close electrical discharge machining pulse power (14), closing presurePump (12) and valve (9);
(e), hollow edged electrode (3) is continued to lower feeding one segment distance, hollow edged electrode (3) end is exceededWorkpiece (5) lower surface 1-10mm, when ensureing Electrolyzed Processing, micro hole inwall and intact hollow edged electrode (3)Surface relatively;
(f), connect intake pump (10), to injecting working solution (17) in work tank (7), make workpiece (5)Be immersed in completely in working solution (17), close intake pump (10), connect Electrolyzed Processing power supply (15), carry outElectrolyzed Processing;
(g), complete Electrolyzed Processing, disconnect Electrolyzed Processing power supply (15), open valve (9), make working solutionWorking solution (17) in groove (7) flows back to liquid reserve tank (16) through valve (9), and terminal clamp (2) return back toProcessing original state, unloads workpiece (5).
2. micro hole electric processing method according to claim 1, is characterized in that: high-speed electric spark is micro-Aperture processing is used same working solution with Electrolyzed Processing, and working solution is running water or deionized water or ultra-pure water.
3. a micro hole electric machining device, is characterized in that by lathe (1), workbench (8), workpiece dressFolder platform (6), work tank (7), high-speed electric spark processing unit (plant), electrolytic machining device, working solution followLoop device composition; And:
(a), described high-speed electric spark processing unit (plant) is by terminal clamp (2), hollow edged electrode (3), electrode guidingDevice (4), electrical discharge machining pulse power (14) composition;
(b), described electrolytic machining device is made up of Electrolyzed Processing power supply (15), cathode for electrochemical machining (3),Cloudy plate for Electrolyzed Processing (3) is high-speed electric spark hollow edged electrode (3) for micro hole machining;
(c), described working solution EGR comprises liquid reserve tank (16), the filter being connected with liquid reserve tank (13),Wherein connect with hollow edged electrode (3) through compression pump (12), pressure regulator valve (11) on a road through filter (13)Logical, another road is communicated with work tank (7) through intake pump (10); Work tank (7) and liquid reserve tank (16)Between be also provided with the return flow line being formed by valve (9) and corresponding liquid flowing line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710080525.0A CN106342005B (en) | 2007-01-19 | 2007-01-19 | Micro hole electric processing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710080525.0A CN106342005B (en) | 2007-01-19 | 2007-01-19 | Micro hole electric processing method and device |
Publications (1)
| Publication Number | Publication Date |
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| CN106342005B true CN106342005B (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710080525.0A Expired - Fee Related CN106342005B (en) | 2007-01-19 | 2007-01-19 | Micro hole electric processing method and device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106342005B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560576A (en) * | 2017-08-07 | 2018-01-09 | 苏州电加工机床研究所有限公司 | The processing method of turbo blade numerical control electric spark aperture On-machine Test correction |
| CN110181134A (en) * | 2019-06-14 | 2019-08-30 | 安徽理工大学 | A kind of Fine and Deep Hole electric machining apparatus and method |
| CN110744154A (en) * | 2019-09-19 | 2020-02-04 | 南京航空航天大学 | Device and method for alternately machining arc surface by electric spark electrolysis |
| CN111347112A (en) * | 2020-03-25 | 2020-06-30 | 西安工业大学 | Drilling device and method for conductor material |
| CN111545850A (en) * | 2020-05-11 | 2020-08-18 | 南京航空航天大学 | Ethylene glycol based solution electrolysis electric spark composite wire cutting processing method |
| CN116140726A (en) * | 2023-02-09 | 2023-05-23 | 北京机科国创轻量化科学研究院有限公司 | Electric spark and electrochemical composite micro deep hole machining equipment |
-
2007
- 2007-01-19 CN CN200710080525.0A patent/CN106342005B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560576A (en) * | 2017-08-07 | 2018-01-09 | 苏州电加工机床研究所有限公司 | The processing method of turbo blade numerical control electric spark aperture On-machine Test correction |
| CN107560576B (en) * | 2017-08-07 | 2019-12-03 | 苏州电加工机床研究所有限公司 | The processing method of turbo blade numerical control electric spark aperture On-machine Test correction |
| CN110181134A (en) * | 2019-06-14 | 2019-08-30 | 安徽理工大学 | A kind of Fine and Deep Hole electric machining apparatus and method |
| CN110744154A (en) * | 2019-09-19 | 2020-02-04 | 南京航空航天大学 | Device and method for alternately machining arc surface by electric spark electrolysis |
| CN110744154B (en) * | 2019-09-19 | 2020-11-06 | 南京航空航天大学 | Device and method for alternately machining arc surface by electric spark electrolysis |
| CN111347112A (en) * | 2020-03-25 | 2020-06-30 | 西安工业大学 | Drilling device and method for conductor material |
| CN111347112B (en) * | 2020-03-25 | 2022-04-08 | 西安工业大学 | Drilling device and method for conductor material |
| CN111545850A (en) * | 2020-05-11 | 2020-08-18 | 南京航空航天大学 | Ethylene glycol based solution electrolysis electric spark composite wire cutting processing method |
| CN111545850B (en) * | 2020-05-11 | 2021-06-08 | 南京航空航天大学 | Ethylene glycol based solution electrolysis electric spark composite wire cutting processing method |
| CN116140726A (en) * | 2023-02-09 | 2023-05-23 | 北京机科国创轻量化科学研究院有限公司 | Electric spark and electrochemical composite micro deep hole machining equipment |
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Granted publication date: 20110216 Termination date: 20210119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |