CN107511546B - Wire electrochemical micro-machining gap electro-deposition auxiliary measuring method - Google Patents
Wire electrochemical micro-machining gap electro-deposition auxiliary measuring method Download PDFInfo
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- 238000004070 electrodeposition Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000005459 micromachining Methods 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 34
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 23
- 238000012937 correction Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 70
- 239000002184 metal Substances 0.000 claims description 70
- 239000003792 electrolyte Substances 0.000 claims description 65
- 238000005520 cutting process Methods 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 24
- 238000000151 deposition Methods 0.000 claims description 12
- 230000008021 deposition Effects 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 238000003754 machining Methods 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000002161 passivation Methods 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000002659 electrodeposit Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000011160 research Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 239000003522 acrylic cement Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 2
- 235000011180 diphosphates Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002385 metal-ion deposition Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
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- 238000000465 moulding Methods 0.000 description 1
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- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- 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
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
-
- 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
- B23H7/02—Wire-cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Electro-deposition auxiliary measuring method in wire electrochemical micro-machining gap of the present invention belongs to accurate, micro Electrochemical Fabrication field.Its feature includes following procedure: utilizing two different electrochemical deposition methods, i.e. metal ion is deposited from the slit structure end of wire electrochemical micro-machining or minute yardstick line electrode surface used, until full of processing gap, and the position by minute yardstick line electrode relative to slit structure end face is completely fixed.Layering rubbing down, actual measurement, data correction are carried out to processing gap from thickness of workpiece direction, the distributed model in processing gap is established by mathematical modeling, image reconstruction.The present invention is of great significance to the theoretical research of wire electrochemical micro-machining.
Description
Technical field
Electro-deposition auxiliary measuring method in wire electrochemical micro-machining gap of the present invention belongs to accurate, fine electricity
Chemical process technology field.
Background technique
Wire electrochemical micro-machining technology is using the wire of minute yardstick as tool-electrode, in conjunction with ultrashort pulse electric current skill
Art realizes adding for fine seam, slot structure and high depth-to-width ratio micro part with complex shape by the feed motion of line electrode
Work.Due to its machined surface quality, flawless burr, no heat affected area, tool-electrode is not lost, and it is excellent that rapidoprint is wide etc.
Point is with a wide range of applications in fields such as aerospace, microsensor, microrobot, biological medicine engineerings.
In wire electrochemical micro-machining, process is actually that the molding electrolysis of minute yardstick circle line electrode adds
Work process is processed bubble, cation and insoluble product of generation etc. and is largely resulted from end face and normal gap, between processing
Gap reaches micron even sub-micron rank, and lesser side processing gap, which often represents, higher shapes precision and the limit
Working ability.However lesser processing gap will will lead to fresh electrolyte and update difficult, constantly accumulate the bubble grown up and not
Soluble product will block processing gap, hinder mass transport process, cause shadow to anodic dissolution rate, end clearance and side clearance
It rings, causes the processing such as the reduction of machining accuracy and stability, or even the serious short circuit of appearance, line electrode deformation that can not continue progress
Phenomenon.Therefore, the regularity of distribution for grasping processing gap for science, accurately judge machining state, analyzes various factors to adding
The influence of work process promotes the research for processing product diffusion mechanism in gap, improves machining accuracy, efficiency and stability, have
Significance.
Currently, being to pass through experimental result both at home and abroad for the research in the processing gap in wire electrochemical micro-machining
Measurement processing slit width calculates side-play size indirectly and carries out simple analysis, and for end clearance, normal gap
It accurately measures online, and carries out grinding for processing gap distribution rule according to the actual measured results under various processing on real-time parameters
Study carefully there is not yet open report.During actual processing, gap is processed not only by electric field action, also by flow field, temperature field
Etc. the influence of more comprehensive functions, so that the regularity of distribution in processing gap is increasingly complex.
Therefore, by the method for experiment under the instantaneous machining state of micro-electrochemical machining wire cutting, each processing gap carries out real
Border measurement, the correlation and each processing gap established between end clearance, normal gap and side clearance and processing are joined
Several relationships, discloses the regularity of distribution in processing gap, and the progress to micro-electrochemical machining wire cutting theoretical research has highly important
Meaning.
Summary of the invention
The purpose of the present invention is to provide a kind of quick, accurate measurement wire electrochemical micro-machining gap methods.It is micro-
Thin electrolysis linear cutter gap electro-deposition auxiliary measuring method, it is characterised in that including following procedure:
1. wire electrochemical micro-machining gap electro-deposition auxiliary measuring method, it is characterised in that including following procedure:
Step 1, fuse electro-deposition auxiliary electrode, line electrode top fusing electrode, line electrode lower part electrode, minute yardstick line
Electrode is sequentially arranged at minute yardstick line electrode installs fixture corresponding position, using optimization machined parameters to sheet metal workpieces into
The cutting of row slit structure cuts off high frequency pulse power supply, is simultaneously stopped the feeding of line electrode under stable machining state.
Step 2 replaces power supply, electrolyte, using two different electrochemical deposition methods, i.e., metal ion from
The end of slit structure starts to deposit or deposit since minute yardstick line electrode surface, and control electro-deposition parameter fills metal ion
The end region of slit structure where full line electrode, until the line electrode of minute yardstick is electric relative to the position of slit structure end
Deposited metal layer is completely fixed.
Step 3 replaces power supply, electrolyte, by control power parameter, concentration of electrolyte by metal after electro-deposition
Workpiece top and lower part it is exposed line electrode it is molten disconnected, remove line electrode metal works combination from metal works installs fixture, it is fast
Speed is solidified with acrylic glue.
Step 4 carries out layering rubbing down to cured line electrode workpiece combination, on each section in thickness of workpiece direction
It processes gap and carries out actual measurement, error analysis, data correction, obtain actual side clearance Δs(n), end clearance Δb(n)
With normal gap Δn(n)。
Step 5 passes through mathematical modeling, image reconstruction, the two dimension and distributed in three dimensions model in foundation processing gap.
In the step 1, when carrying out the cutting of slit structure, power supply is generally high frequency pulse power supply, the general root of electrolyte
It is selected according to cutting object, can choose acid, alkalinity or neutral solution.In the step 2, when two kinds of electro-deposition methods of utilization
When carrying out metal ion deposition, power supply is generally DC power supply, electrodeposit metals layer should generally have with metal works color compared with
Big difference, such as when metal works are pure nickel or nickel based metal, electrolyte is generally acid copper sulfate solution or pyrophosphate
Electrolyte.In the step 3, when carrying out line electrode fusing, power supply can choose DC power supply or the pulse power, electrolyte
Generally sodium hydroxide, potassium hydroxide solution.
In two kinds of electrochemical deposition methods of the step 2, when metal ion is deposited from the end of slit structure,
Its process flow are as follows: power supply is changed to DC power supply, electrolyte is changed to deposited electrolyte, line electrode is passed through into fastening spiral shell
Nail joint positive pole, metal works connect power cathode, and control power parameter, solution concentration, electrodeposition time are in slit structure
Thin electroplated layer metal conducting layer at end clearance；Power supply is changed to the pulse power, electrolyte is changed to cutting electrolyte, is controlled
Relevant parameter processed moves line electrode along slit electroless coating region, reaches the passivation in slit structure electroless coating region, and keeps line electric
Pole is moved to initial process finishing position；Power supply is changed to DC power supply, electrolyte is changed to deposited electrolyte, it will be auxiliary
Helping electrode by electro-deposition auxiliary electrode to draw electric screw and connect power cathode becomes auxiliary cathode, while metal works also connect power supply
Cathode, line electrode connect positive pole, and control electrical parameter, solution concentration, sedimentation time make metal ion from the end of slit structure
Start to deposit, and full of the slit structure end region where line electrode, until the line electrode of minute yardstick is electrically deposited metal layer
It is completely fixed.
In two kinds of electrochemical deposition methods of the step 2, when metal ion is deposited from minute yardstick line electrode surface
When, process flow are as follows: the parameters such as the control pulse power, concentration of electrolyte move line electrode along slit cut direction, reach
The passivation of slit structural edge and workpiece upper and lower surface, and line electrode is made to be moved to initial process finishing position；More by power supply
It is changed to DC power supply, electrolyte is changed to deposited electrolyte, auxiliary electrode is drawn into electric screw by electro-deposition auxiliary electrode and is connect
Positive pole and become impressed current anode, line electrode connects power cathode, control electrical parameter, solution concentration, sedimentation time make metal from
Son is deposited since the line electrode surface of minute yardstick, and full of the slit structure end region where line electrode, until minute yardstick
Line electrode be electrically deposited metal layer and be completely fixed.
The molten disconnected method of the exposed line electrode of metal works upper and lower surface after electro-deposition in the step 3 are as follows: lead to line electrode
It crosses fastening screw and connects positive pole, the molten disconnected cathode of the molten disconnected cathode in line electrode top and lower part is drawn into electricity by the molten disconnected cathode of line electrode
Screw connects pulse power cathode, keeps the line electrode at molten disconnected position molten by control power parameter, molten disconnected time, fusing solution concentration
It is disconnected.
Electrolyte replacing options in the step are as follows: electrolytic bath outlet valve is controlled by flowmeter after being opened and is electrolysed
The slow outflow of liquid opens imported valve after electrolyte outflow is clean and slowly flows into deionized water progress electrolyte from slot bottom
The cleaning of slot after cleaning, closes outlet valve and flows slowly into required electrolyte again；It can be with by flowmeter coutroi velocity
Avoid the disturbance of electrolyte update, electrolytic bath when cleaning to workpiece and line electrode relative position；When electro-deposition, by controlling nothing
The slow flowing of electro-deposition electrolyte may be implemented in the revolving speed of pole speed-governing rotor, is updated to the deposition liquid of deposition region.
This method has the advantage that
1, the wire electrochemical micro-machining gap electro-deposition auxiliary measuring method, using optimization machined parameters into
The processing gap precision that row processing obtains after processing can be made to stop is higher, more representative.0.1nm grades of the size of metal ion
Not, metal ion is deposited either since the end of slit structure or is deposited since minute yardstick line electrode surface, all will not
Position to line electrode relative to slit structure generates disturbance, can be with after metal ion is full of processing gap and fixed line electrode
It is accurate that the processing gap stablized under machining state is presented.
2, stepless time adjustment rotor when the electro-deposition can realize the slow stream of electro-deposition electrolyte by control revolving speed
It is dynamic, the deposition liquid of deposition region is updated.The metal ion and metal works color difference of electro-deposition can be such that layering throws
The processing gap central electrode of mill section is more clear presentation relative to the position at metal works slit edge.
3, it is using line electrode molten broken Electrode that deposition site is golden after the deposited metal layer of the minute yardstick line electrode is fixed
The exposed line electrode of metal work-pieces upper and lower surface is molten disconnected, it may be convenient to remove the line electrode of effective deposition site, without right
The line electrode of deposition site generates touching.Acrylic adhesive curing speed is fast, and transparency is high, good fluidity, electro-deposition is fixed
After line electrode and workpiece combination integrally curing, when carrying out layering rubbing down, line caused by rubbing down power during rubbing down can be prevented
Electrode position offset error.
4, the molten functions such as disconnected of the cutting of slit structure, electro-deposition, line electrode may be implemented in the line electrode installs fixture,
Correlation is drawn electric position conducting wire and is connected with the power supply being placed in outside lathe by drawing electric wire before processing, controls and leads in whole process
The on-off of line current is successively realized that cutting, electro-deposition, line electrode are molten disconnected and etc., is avoided electric to line when replacing anode and cathode
Pole and the location of workpiece generate mushing error.
5, the Multifunctional electrolysis liquid bath can by control trench bottom exits and entrances valve on-off and the flow of flowmeter
To realize the cleaning of electrolytic bath, the update of electrolyte, prevent in electrolyte replacement process due to electrolytic bath and line electrode
Offset error of the line electrode caused by the touching of fixture relative to slit locations of structures.
In the wire electrochemical micro-machining gap electro-deposition auxiliary measuring method that this patent proposes, slit stable structure is cut
Cut, process gap electro-deposition solidification, the molten disconnected step of line electrode can in same line electrode fixture and same electrolytic bath successively
It realizes, can completely avoid minute yardstick line electrode referring now to the offset error of slit structure, after electro-deposition during entire test
Line electrode and workpiece deposition combination to minute yardstick are layered rubbing down, and stabilization can be accurately presented in situ by being layered in rubbing down section
Position of the line electrode relative to metal slit structure after cutting.
It can be seen that the wire electrochemical micro-machining gap electro-deposition auxiliary measuring method that patent proposes connects with technique
The advantages that coherence is good, easy to operate, and precision is high, and exploitativeness is strong.
Detailed description of the invention
Fig. 1 minute yardstick line electrode installs fixture schematic diagram；
The cutting of Fig. 2 slit, electro-deposition, the molten disconnected Multifunctional electrolysis liquid bath schematic diagram of line electrode；
The process flow diagram that Fig. 3 metal ion is deposited since slit structure end face；
The process flow diagram that Fig. 4 metal ion is deposited since line electrode；
Fig. 5 acrylic solidification layering rubbing down combination and rubbing down layer schematic diagram；
Fig. 6 wire electrochemical micro-machining gap two dimension and threedimensional model schematic diagram；
Figure label title: 1, line electrode locating slot, 2, the molten broken Electrode of line electrode draws electric screw, 3 electro-deposition auxiliary electrodes
Draw electric screw, 4, electro-deposition and slit structure cutting area, 5, line electrode fastening screw, 6, line electrode fixture mounting-positioning holes, 7,
The molten broken Electrode in line electrode top, 8, the molten broken Electrode in line electrode lower part, 9, electro-deposition auxiliary electrode, 10, flowmeter, 11, inlet valve
Door, 12, outlet valve, 13, stepless time adjustment rotor, 14, metal works installs fixture, 15, metal works fastening and draw electric screw,
16, work piece holder fastening screw, 17, minute yardstick line electrode, 18, metal works, 19, high frequency pulse power supply, 20, DC power supply,
21, metal conducting layer, 22, electro-deposition auxiliary cathode, 23, metal works radio frequency floor area passivation layer, 24, metal works it is blunt
Change layer, 25, electro-deposition impressed current anode, 26, electrodeposit metals layer, 27, the line electrode upper end position Rong Duan, 28, line electrode lower end it is molten
Disconnected position, 29, acrylic glue solidifying line electrode and workpiece combination, 30, the minute yardstick line electrode in rubbing down layer, 31, metal work
Part slit structure, 32, deposited metal layer, 33, actual side clearance Δs(n), 34, actual end clearance Δb(n), 35, method
To clearance deltan(n), 36, actual width of slit W (n), 37, processing gap Two dimensional Distribution model, 38, process gap three-dimensional
Distributed model.
Specific embodiment
Fig. 1 is minute yardstick line electrode installs fixture, is installed on the three-dimensional essence of x-y-z by line electrode fixture mounting-positioning holes 6
On close displacement platform, wherein minute yardstick line electrode 10 is mounted in the locating slot 1 of fixture by line electrode fastening screw 5, and is made
Line electrode keeps certain pretightning force；Electro-deposition auxiliary electrode 9 is added at slot 4 after slit cutting area and by deposition auxiliary electricity
Draw electric screw 3 and carry out drawing polarity of the electricity to control auxiliary electrode in pole；When line electrode connects power anode, line electricity by fastening screw 5
When the molten disconnected cathode 8 of the molten disconnected cathode 7 in pole top and lower part draws electric screw 2 by the molten disconnected cathode of line electrode and connects pulse power cathode, lead to
Cross control electrical parameter, molten disconnected time etc. can make post-depositional metal works top 27 and lower part 28 is exposed line electrode it is molten
It is disconnected,.
Fig. 2 is slit cutting, electro-deposition, the molten disconnected Multifunctional electrolysis liquid bath of line electrode, and wherein metal works 18 pass through metal
Work piece screw 15 is mounted in metal works installs fixture 14, and workpiece installs fixture is mounted on more function by fastening screw 16
In energy electrolytic bath；Stepless time adjustment rotor 13 is mounted on electrolytic bath wall, realizes crystallizing field by control revolving speed when electro-deposition
The update of domain electrolyte；Electrolyte inlet valve 11 and outlet valve 12 are mounted on the bottom of electrolytic bath, and in imported valve
With outlet valve position flowmeter 10 is installed respectively, controls flow rate of liquid come the cleaning for realizing electrolytic bath and electrolyte more
Newly.
The line electrode of acrylic adhesive curing and workpiece combination 29 are subjected to layering rubbing down along thickness of workpiece direction in Fig. 5
Afterwards, minute yardstick line electrode 30 in each rubbing down layer, metal works slit structure 31, deposited metal layer can accurately be showed
32, and actual side clearance Δs(n) 33, end clearance Δb(n) 34 and normal gap Δn(n) 35, width of slit W (n)
36。
Fig. 6 is the processing gap two dimension 37 and three established according to actual measurement, error analysis, data correction, image reconstruction
Tie up 38 distributed models.Wherein ΔsFor side clearance, ΔbFor end clearance, W be width of slit, L is slot length, R is line electrode
Radius, D are metal works thickness.
Illustrate implementation process of the invention in conjunction with Fig. 1, Fig. 2, Fig. 5, Fig. 6:
Step 1, fuse electro-deposition auxiliary electrode, line electrode top fusing electrode, line electrode lower part electrode, minute yardstick line
Electrode is sequentially arranged at minute yardstick line electrode installs fixture corresponding position, using optimization machined parameters to sheet metal workpieces into
The cutting of row slit structure cuts off high frequency pulse power supply, is simultaneously stopped the feeding of line electrode under stable machining state.
Step 2 replaces power supply, electrolyte, using two different electrochemical deposition methods, i.e., metal ion from
The end of slit structure starts to deposit or deposit since minute yardstick line electrode surface, and control electro-deposition parameter fills metal ion
The end region of slit structure where full line electrode, until the line electrode of minute yardstick is electric relative to the position of slit structure end
Deposited metal layer 26 is completely fixed.
Step 3 replaces power supply, electrolyte, by control power parameter, concentration of electrolyte by metal after electro-deposition
Workpiece top 27 and lower part 28 it is exposed line electrode it is molten disconnected, remove line electrode metal works from metal works installs fixture 14 and combine
Body is solidified with acrylic glue rapidly.
Step 4 carries out layering rubbing down to cured line electrode workpiece combination 29, utilizes tool microscope or contourgraph pair
Processing gap on each section in thickness of workpiece direction carries out actual measurement, error analysis, data correction, obtains actual side
Clearance deltas(n) 33, end clearance Δb(n) 34 and normal gap Δn(n)35。
Step 5 passes through mathematical modeling, image reconstruction, the two dimension 37 and distributed in three dimensions model 38 in foundation processing gap.
In the step 1, when carrying out the cutting of slit structure, power supply is generally high frequency pulse power supply, the general root of electrolyte
It is selected according to cutting object, can choose acid, alkalinity or neutral solution.In the step 2, when two kinds of electro-deposition methods of utilization
When carrying out metal ion deposition, power supply is generally DC power supply, electrodeposit metals layer should generally have with metal works color compared with
Big difference, such as when metal works are pure nickel or nickel based metal, electrolyte is generally acid copper sulfate solution or pyrophosphate
Electrolyte.In the step 3, when carrying out line electrode fusing, power supply can choose DC power supply or the pulse power, electrolyte
Generally sodium hydroxide, potassium hydroxide solution.
Fig. 3 is the process flow diagram that metal ion is deposited since slit structure end face, implementation process are as follows: by arteries and veins
It rushes power supply and is changed to DC power supply 20, cutting electrolyte is changed to deposited electrolyte, line electrode is connect into electricity by fastening screw 5
Source anode, metal works connect power cathode, and control power parameter, solution concentration, electrodeposition time are between the end face of slit structure
Thin electroplated layer metal conducting layer 21 at gap；DC power supply is changed to the pulse power 19, deposited electrolyte is changed to cutting electricity
Liquid is solved, control relevant parameter moves line electrode along slit electroless coating region, forms gold in metal works radio frequency floor area
Metal work-pieces radio frequency floor area passivation layer 23, and line electrode is made to be moved to initial electrolysis linear cutter end position；It will
The pulse power is changed to DC power supply 20, and cutting electrolyte is changed to deposited electrolyte, and auxiliary electrode 9 is auxiliary by electro-deposition
It helps electrode to draw electric screw 3 to connect power cathode and become auxiliary cathode 22, while metal works also connect power cathode, line electrode connects electricity
Source anode, control electrical parameter, solution concentration, sedimentation time deposit metal ion since the end of slit structure, and are full of
Slit structure end region where line electrode, until the line electrode of minute yardstick is electrically deposited metal layer 26 and is completely fixed.
The process flow diagram that Fig. 4 metal ion is deposited since line electrode, implementation process are as follows: control pulse electricity
The parameters such as source, concentration of electrolyte move line electrode along slit cut direction, reach slit structural edge and workpiece upper and lower surface,
And metal works passivation layer 24 is formed, and line electrode is made to be moved to the initial process finishing position of electrolysis wire cutting；By pulse electricity
Source is changed to DC power supply 20, and cutting electrolyte is changed to deposited electrolyte, auxiliary electrode 9 is passed through electro-deposition auxiliary electrode
Draw electric screw 3 to connect positive pole and become impressed current anode 25, line electrode connects power cathode, controls electrical parameter, solution concentration, deposition
Time deposits metal ion since the line electrode surface of minute yardstick, and full of the slit structure end face area where line electrode
Domain, until the line electrode of minute yardstick is electrically deposited metal layer 26 and is completely fixed.
Claims (5)
1. a kind of wire electrochemical micro-machining gap electro-deposition auxiliary measuring method, it is characterised in that including following procedure:
Step 1, minute yardstick line electrode (17) are mounted on minute yardstick line electrode installs fixture corresponding position, pacify in minute yardstick line electrode
In clamps, it is located at slit cutting area rear setting electro-deposition auxiliary electrode (9), is located above slit cutting area and line electrode is set
Top fuses electrode (7), is located at setting line electrode lower part below slit cutting area and fuses electrode (8)；Utilize minute yardstick line electrode
(17) cutting of slit structure is carried out to metal works (18), under stable machining state, break impulse power supply (19) stops simultaneously
The only feeding of line electrode；
Step 2 replaces power supply, electrolyte, and using two different electrochemical deposition methods, i.e. metal ion is from slit
The end of structure starts to deposit or deposit since minute yardstick line electrode surface, and control electro-deposition parameter makes metal ion full of line
The end region of slit structure where electrode, until the line electrode of minute yardstick is electrically deposited relative to the position of slit structure end
Metal layer (26) is completely fixed；The wherein selection of deposited electrolyte so that electrodeposit metals layer and metal works color have compared with
Big difference；
Step 3, power supply use DC power supply or the pulse power, and electrolyte uses sodium hydroxide or potassium hydroxide；Make line electrode
Positive pole is connect, the molten disconnected cathode 8 of the molten disconnected cathode 7 in line electrode top and lower part connects power cathode, passes through control power parameter, electrolysis
Liquid concentration is molten disconnected by metal works top (27) after electro-deposition and lower part (28) exposed line electrode, from metal works installs fixture
(14) line electrode metal works combination is removed, is solidified with acrylic glue rapidly；
Step 4 carries out layering rubbing down to cured line electrode workpiece combination (29), on each section in thickness of workpiece direction
Processing gap measures, and carries out error analysis, data correction, obtains actual side clearance Δs(n) between (33), end face
Gap Δb(n) (34) and normal gap Δn(n) (35)；
Step 5 passes through mathematical modeling, image reconstruction, the two dimension (37) and distributed in three dimensions model (38) in foundation processing gap.
2. electro-deposition auxiliary measuring method in wire electrochemical micro-machining gap according to claim 1, it is characterised in that:
In the step 1, when carrying out the cutting of slit structure, the pulse power (19) is high frequency pulse power supply, and cutting electrolyte is
Acid, alkalinity or neutral solution, determine with specific reference to cutting object.
3. electro-deposition auxiliary measuring method in wire electrochemical micro-machining gap according to claim 1, it is characterised in that:
In two kinds of electrochemical deposition methods of the step 2, when metal ion is deposited from the end of slit structure, work
Skill process are as follows:
The pulse power is changed to DC power supply (20), cutting electrolyte is changed to deposited electrolyte, line electrode is connect into power supply
Anode, metal works connect power cathode, and control power parameter, solution concentration, electrodeposition time are in the end clearance of slit structure
Locate thin electroplated layer metal conducting layer (21)；
DC power supply is changed to the pulse power (19), deposited electrolyte is changed to cutting electrolyte, control relevant parameter makes
Line electrode is moved along slit electroless coating region, forms metal works radio frequency floor area in metal works radio frequency floor area
Passivation layer (23), and line electrode is made to be moved to the initial electrolysis linear cutter end position of the step 1；
The pulse power is changed to DC power supply (20), cutting electrolyte is changed to deposited electrolyte, auxiliary electrode (9) is connect
Power cathode and become auxiliary cathode (22), while metal works also connect power cathode, and line electrode connects positive pole, controls electricity ginseng
Number, solution concentration, sedimentation time deposit metal ion since the end of slit structure, and full of the slit where line electrode
Structure end region, until the line electrode of minute yardstick is electrically deposited metal layer (26) and is completely fixed.
4. electro-deposition auxiliary measuring method in wire electrochemical micro-machining gap according to claim 1, it is characterised in that:
In two kinds of electrochemical deposition methods of the step 2, when metal ion is deposited from minute yardstick line electrode surface,
Process flow are as follows:
The pulse power, concentration of electrolyte are controlled, line electrode is moved along slit cut direction, reaches slit structural edge and workpiece
Upper and lower surface, and form metal works passivation layer (24), and be moved to line electrode in the step 1 to be electrolysed wire cutting initial
Process finishing position；
The pulse power is changed to DC power supply (20), electrolyte is changed to deposited electrolyte, auxiliary electrode (9) is connect into power supply
Anode and become impressed current anode (25), line electrode connects power cathode, control electrical parameter, solution concentration, sedimentation time make metal from
Son is deposited since the line electrode surface of minute yardstick, and full of the slit structure end region where line electrode, until minute yardstick
Line electrode be electrically deposited metal layer (26) and be completely fixed.
5. electro-deposition auxiliary measuring method in wire electrochemical micro-machining gap according to claim 1, it is characterised in that:
For electrolyte level in electrolytic bath, electrolytic bath bottom is provided with the imported valve (11) and outlet valve of electrolyte
(12), flowmeter and in imported valve and outlet valve position is installed respectively；Stepless time adjustment rotor is also installed on electrolytic bath wall
(13)；
Electrolyte replacing options are as follows: delaying by flowmeter (10) control electrolyte after electrolytic bath outlet valve (12) is opened
Slug flow goes out, and imported valve (11) are opened after electrolyte outflow is clean and slowly flow into deionized water progress electrolytic bath from slot bottom
Cleaning, after cleaning, close outlet valve (12) flow slowly into required electrolyte again；It is controlled and is flowed by flowmeter (10)
Disturbance when speed can update to avoid electrolyte, electrolytic bath cleans to workpiece and line electrode relative position；When electro-deposition, pass through
The revolving speed for controlling stepless time adjustment rotor (13) realizes the slow flowing of electro-deposition electrolyte, carries out more to the deposition liquid of deposition region
Newly.
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