CN109693009A - Workpiece, which moves back and forth, assists axial fliud flushing electrolysis wire-electrode cutting and processing method and device - Google Patents
Workpiece, which moves back and forth, assists axial fliud flushing electrolysis wire-electrode cutting and processing method and device Download PDFInfo
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- CN109693009A CN109693009A CN201910038825.5A CN201910038825A CN109693009A CN 109693009 A CN109693009 A CN 109693009A CN 201910038825 A CN201910038825 A CN 201910038825A CN 109693009 A CN109693009 A CN 109693009A
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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
- 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
- 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
- B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
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Abstract
It is moved back and forth the present invention relates to a kind of workpiece and assists axial fliud flushing electrolysis wire-electrode cutting and processing method and device, belong to electrical-chemistry method technical field.It is primarily characterized in that: the big thickness workpiece of linear cutter being electrolysed using axial fliud flushing, workpiece moves reciprocatingly along direction of feed while workpiece does feeding cutting movement to line electrode and electrode axially moves reciprocatingly along the line.Using workpiece reciprocating manner, it changes between workpiece and line electrode, the distance between workpiece and nozzle, be conducive to electrolyte quickly to flow in long and narrow feeding end face processing gap, accelerate the update of electrolyte and the exclusion of electrolysate, the difference of processing gap electrolyte inside flow velocity is reduced, electrolysis cutting processing efficiency and machining accuracy are improved.
Description
Technical field
It is moved back and forth the present invention relates to a kind of workpiece and assists axial fliud flushing electrolysis wire-electrode cutting and processing method and device, belong to electricity
Chemical process technology field.
Background technique
Aero-engine leaf dish tongue-and-groove, blade tenon, the ruled surfaces structural elements such as precision drive gear are mostly to use
What cutting technique processed, and being electrolysed wire cutting is to be sent out in the electrolytic solution using filament as tool cathode using metal
Raw Anodic solution principle has machining accuracy height, does not produce to a kind of cutting technique that metal material is shaped
Raw forming residual stress, without re cast layer, without advantages such as tool losses, so being suitable for the hi-precision cutting of ruled surface constitutional detail
Processing.
But since the joint-cutting of electrolysis linear cutter is excessively narrow, fresh electrolyte is difficult to enter in processing gap,
Cell reaction speed is reduced, while electrolysate is difficult to exclude from processing gap, is accumulated in joint-cutting and will lead to electrolyte
Ingredient and conductivity change, influence the stability of Electrolyzed Processing, in addition will appear short circuit and stop processing.It is especially big
The cutting processing of thickness workpiece, with the increase of thickness of workpiece, the deeper joint-cutting the longer and narrower, and electrolysate is more difficult to exclude, electrolysis
Liquid is more difficult to update.
For the electrolysis cutting processing of big thickness workpiece, linear cutter mode is electrolysed frequently with axial fliud flushing: utilizing height
Electrode axial direction is wrapped in line electrode and quickly rushes in processing gap along the electrolyte of speed flowing, washes away the electricity in processing gap
Product is solved, achievees the purpose that quickly to update electrolyte, improve electrolysis linear cutter efficiency and the energy of big thickness workpiece can be processed
Power.But when workpiece is blocked up, the joint-cutting of line electrode axial direction is deeper, and the processing gap for feeding end face is smaller, is able to enter
The fresh electrolyte processed in gap is seldom, and is influenced in narrow processing gap by line electrode and workpiece wall surface,
Flowing velocity greatly reduces, and is difficult to be flushed to bottom end, the renewal rate of electrolyte and the exclusion speed of electrolysate are still very slow, electricity
Solution cutting processing efficiency and the capability improving that big thickness workpiece can be processed are unobvious.In addition, electrolyte flow rate is in processing gap
Linear loss is very big, and processing gap internal upper part shunts speed fastly, and workpiece removal amount is larger, and lower portion flow rate is slow in processing gap, work
Part removal amount is smaller, causes the joint-cutting processed wide at the top and narrow at the bottom, and machining accuracy reduces.Therefore, how joint-cutting is rapidly and efficiently excluded
In electrolysate, update electrolyte in joint-cutting, be still existing important problem when big thickness workpiece is cut in electrolysis.
Summary of the invention
Aiming at the problem that electrolysate excludes difficulty in joint-cutting when being electrolysed linear cutter, electrolyte is difficult to update, this hair
It is bright propose a kind of workpiece and move back and forth assist axial fliud flushing electrolysis wire-electrode cutting and processing method and device.
A kind of axial fliud flushing electrolysis wire-electrode cutting and processing method of workpiece reciprocating motion auxiliary, it is characterised in that: use and axially rush
Liquid is electrolysed linear cutter workpiece, and workpiece moves reciprocatingly while workpiece does feeding cutting movement to line electrode, workpiece
Move back and forth the reciprocating motion including workpiece electrode axial direction along the reciprocating motion of feeding machine direction and workpiece；Work as work
When part moves reciprocatingly along direction of feed, the distance between workpiece and line electrode generating period variation, between the two away from moment
Increase, is conducive to electrolyte and more more smoothly enters in the processing gap of feeding end face, thoroughly wash away electrolysate, update electrolysis
Liquid accelerates cell reaction speed, improves electrolysis cutting processing efficiency；Simultaneously as the increase in feeding end face processing gap, so that
Electrolyte can be flowed therethrough quickly, reduce the linear loss of electrolyte flow rate, reduce electrolyte in processing gap top and the bottom
The flow velocity difference divided improves electrolysis cutting processing precision；Along workpiece when electrode axially reciprocating, between workpiece and nozzle
Apart from generating period change, feeding end face processing gap in electrolyte flow rate constantly change on the whole so that front end adds
Pulsation fluidised form is presented in electrolyte in break gap, further speeds up the exclusion of electrolysate and the update of electrolyte, improves electrolysis
Cutting processing efficiency；Meanwhile adsorbed electrolyte can be thrown out of under the action of inertia force in machined joint-cutting out, be reduced
The flow field domain of joint-cutting electrolyte inside reduces the dispersion corrosion to cut surface, improves electrolysis cutting processing precision.
Realize that the workpiece moves back and forth the device for assisting axial fliud flushing electrolysis wire-electrode cutting and processing method, feature exists
In: including five-axis machine tool system, anode system, line electrode system；Above-mentioned five-axis machine tool system includes X-axis workbench, Y-axis work
Platform, Z axis workbench, X axis workbench, Y axis workbench, platen；The X axis of X axis workbench is mounted on the work of Y axis
On platform, the Y axis of Y axis workbench is mounted on Z axis workbench, on the Z axis installation Y-axis workbench of Z axis workbench, Y-axis work
The Y-axis of platform is mounted on X-axis workbench, and the X-axis of X-axis workbench is mounted on platen；Five-axis machine tool system further includes
Industrial personal computer and motion control card；Above-mentioned anode system includes anode clamp, workpiece；Workpiece is mounted in anode clamp, anode clamp
Tool is mounted on X axis workbench；Above-mentioned line electrode system includes cathode fixture, line electrode, nozzle, diversion cavity, guider；Its
Middle cathode fixture is fixedly mounted on machine pillar；Line electrode, nozzle, diversion cavity, guider are coaxially mounted to cathode folder
In tool.
The workpiece moves back and forth the method for assisting axial fliud flushing electrolysis wire electric discharge machine, it is characterised in that: X-axis
With the feeding module isolated operation of Y-axis, X-axis is controlled, the Union Movement of Y-axis drives the opposite feeding between workpiece and line electrode
Movement；The feeding module of Z axis is solely run, and controls the up and down motion of Z axis to drive electrode axial direction along workpiece to do reciprocal fortune
It is dynamic；X axis, feeding module and the X-axis of Y axis, Y-axis feeding module in conjunction with, when workpiece does relative feed movement to line electrode
Meanwhile control X axis, the Union Movement of Y axis drives workpiece to move reciprocatingly along direction of feed motion.
The beneficial effects of the present invention are:
1, the present invention is moved back and forth using workpiece assists axial fliud flushing to be electrolysed wire-electrode cutting and processing method, when workpiece to line electrode do into
Workpiece moves reciprocatingly along direction of feed while to cutting movement, so that the distance between workpiece and line electrode generating period
Variation, between the two away from moment increase, be conducive to electrolyte more more smoothly enter feeding end face processing gap in, thoroughly rush
It walks anolyte product, update electrolyte, accelerate cell reaction speed, improve electrolysis cutting processing efficiency；Simultaneously as supply side
Face processes the increase in gap, and electrolyte is quickly flowed therethrough, and reduces the linear loss of electrolyte flow rate, reduces electricity
Liquid is solved in the flow velocity difference of processing gap top and the bottom, improves electrolysis cutting processing precision；
2, electrode axially moves reciprocatingly along workpiece while workpiece does feeding cutting movement to line electrode so that workpiece with
The variation of the distance between nozzle generating period, the electrolyte flow rate that feeding end face processes in gap constantly change on the whole, make
End face processing gap electrolyte inside must be fed, pulsation fluidised form is presented, the exclusion for further speeding up electrolysate and electrolyte are more
Newly, electrolysis cutting processing efficiency is improved；Meanwhile adsorbed electrolyte can be under the action of inertia force in machined joint-cutting out
It is thrown out of, reduces the flow field domain of joint-cutting electrolyte inside, reduce the dispersion corrosion to cut surface, improve electrolysis cutting processing essence
Degree；
3, control mode is uniformly coordinated using multiaxis modularization of doing more physical exercises, ensure that the various opposite fortune between workpiece and line electrode
Move it is relatively independent, i.e. the reciprocating motion of workpiece do not interfere with workpiece course feed movement, ensure that electrolysis cutting processing effect
Rate.
Detailed description of the invention
Fig. 1 is that workpiece moves back and forth the axial fliud flushing electrolysis wire cutting single unit system structural schematic diagram of auxiliary；
Fig. 2 is that workpiece moves back and forth the axial fliud flushing electrolysis linear cutter schematic diagram of auxiliary；
Fig. 3 is that workpiece moves back and forth flow field model figure when assisting axial fliud flushing electrolysis linear cutter；
Fig. 4 is velocity flow profile cloud atlas of the workpiece without (spacing 0.1mm) when moving back and forth；
Fig. 5 is velocity flow profile cloud atlas when workpiece is moved back and forth along direction of feed, spacing increases to 0.2mm；
Fig. 6 is velocity flow profile cloud atlas when workpiece is moved back and forth along direction of feed, spacing increases to 0.3mm；
Fig. 7 is velocity flow profile cloud atlas when electrode axial direction moves back and forth, moves upwards 1mm along workpiece；
Fig. 8 is velocity flow profile cloud atlas when electrode axial direction moves back and forth, moves downward 1mm along workpiece；
Its label title is respectively as follows: the 1, pulse power, 2, industrial personal computer, 3, motion control card, 4, machine pillar, 5, circulation duct,
6, pressure pump, 7, filter, 8, liquid reserve tank, 9, electrolytic bath, 10, cathode fixture, 11, electrolyte, 12, anode clamp, 13, machine
Bed workbench, 14, line electrode, 15, guider, 16, diversion cavity, 17, nozzle, 18, workpiece, 19, flow field domain.
Specific embodiment
According to Fig. 1-2, a kind of axial fliud flushing electrolysis linear cutter of workpiece reciprocating motion auxiliary proposed by the present invention
The overall structure of device mainly includes five-axis machine tool system, electrolyte circulation system, the pulse power 1, anode system, line electrode system
System；Five-axis machine tool system includes X-axis workbench, Y-axis workbench, Z axis workbench, X axis workbench, Y axis workbench, lathe worker
Make platform；The X axis of X axis workbench is mounted on Y axis workbench, and the Y axis of Y axis workbench is mounted on Z axis workbench, Z axis
On the Z axis installation Y-axis workbench of workbench, the Y-axis of Y-axis workbench is mounted on X-axis workbench, the X-axis installation of X-axis workbench
On platen 13；Five-axis machine tool system further includes industrial personal computer 2 and motion control card 3；Anode system includes anode clamp
12, workpiece 18；Workpiece 18 is mounted in anode clamp 12, and anode clamp 12 is mounted on X axis workbench；Line electrode system packet
Include cathode fixture 10, line electrode 14, nozzle 17, diversion cavity 16, guider 15；Wherein it is vertical to be fixedly mounted on lathe for cathode fixture 10
On column 4；Line electrode 14, nozzle 17, diversion cavity 16, guider 15 4 are coaxially mounted in cathode fixture 10.
The movement of five axis passes through the unified regulation of motion control card 3 using modularization control methods by industrial personal computer 2；X-axis and Y-axis
Feeding module isolated operation, the Union Movement of control X-axis, Y-axis drives the opposite feeding between workpiece 18 and line electrode 14
Movement；The feeding module of Z axis is solely run, and it is past to drive workpiece 18 to do along 14 axial direction of line electrode to control the up and down motion of Z axis
Multiple movement；X axis, feeding module and the X-axis of Y axis, Y-axis feeding module in conjunction with, when workpiece 18 to line electrode 14 do it is opposite into
While to movement, the Union Movement of control X axis, Y axis drives the workpiece 18 to move reciprocatingly along direction of feed motion.
The operation of the present invention " workpiece, which moves back and forth, assists axial fliud flushing electrolysis wire-electrode cutting and processing method and device " a kind of
Journey are as follows:
Step 1, line electrode 14 are mounted in cathode fixture 10, and workpiece 18 is mounted in anode clamp 12；
Step 2, starting pressure pump 6, and according to actual processing adjust pressure pump 6 pressure, electrolyte 11 through filter 7,
Circulation duct 5 enters diversion cavity 16, is then punched into the processing gap of workpiece 18 along the axial ejection of line electrode 14 from nozzle 17
After fall into electrolytic bath 9, finally flow back in liquid reserve tank 8；
Step 3, workpiece 18 connect 1 anode of the pulse power, and line electrode 14 connects 1 cathode of the pulse power, starting impulse power supply 1, and sets
Suitable electrical parameter；
Step 4, industrial personal computer 2 by motion control card 3 control X-axis, Y-axis Union Movement come drive workpiece 18 and line electrode 14 it
Between relative feed movement；The up and down motion of Z axis is controlled to drive workpiece 18 to move reciprocatingly along 14 axial direction of line electrode；When
While workpiece 18 does relative feed movement to line electrode 14, control X axis, Y axis Union Movement come drive workpiece 18 along into
It moves reciprocatingly to the direction of motion；
After step 5, completion of processing, the pulse power 1, pressure pump 6, separation, cleaning workpiece 18 are closed.
The beneficial effect for assisting axial fliud flushing to be electrolysed wire-electrode cutting and processing method is moved back and forth to verify workpiece proposed by the present invention
Fruit has carried out analogue simulation, simulated conditions to the flow field in processing gap using 15.0 software of Fluent are as follows: line electrode 14 is straight
Diameter is 0.3mm, and workpiece 18 is with a thickness of 5mm, and the width of slit processed is 0.5mm, and 17 aperture of nozzle is 0.5mm, apart from workpiece
18 upper surface 2mm, fliud flushing inlet pressure are 1MPa.The flow field simulation model established in processing gap is as shown in Figure 3.
Fig. 4 is workpiece without velocity flow profile cloud atlas when moving back and forth, it can be seen from the figure that electrolyte 11 is along line electrode 14
When axial high speed flows, since the gap between line electrode 14 and workpiece 18 is 0.1mm, joint-cutting depth 10mm, only small part electricity
Solution liquid 11 is able to enter in narrow and deep processing gap, and flowing velocity greatly reduces, and flow velocity is several when being flushed to joint-cutting lower part
It is 0, it is larger to flow up and down speed difference in processing gap.
Fig. 5 is workpiece along direction of feed moves back and forth, gap increases to 0.2mm(spacing and increases 0.1mm) when flow velocity
Cloud charts, Fig. 6 are workpiece along direction of feed moves back and forth, spacing increases to 0.3mm(spacing and increases 0.2mm) when flow velocity
Cloud charts, as can be seen that as the distance between line electrode 14 and workpiece 18 increase, a large amount of electrolyte 11 enter comparison diagram 4
It processes in gap, and can be gone out from joint-cutting bottom end, while the flowing velocity in gap is higher, process in gap and flow up and down
Speed difference is little.
Fig. 7 is velocity flow profile cloud atlas when electrode axial direction moves back and forth, moves upwards 1mm along workpiece, and Fig. 8 is work
Velocity flow profile cloud atlas when part 18 moves back and forth along 14 axial direction of line electrode, moves downward 1mm, in conjunction with Fig. 4 as can be seen that with
Workpiece 18 along 14 axially reciprocating of line electrode when, process gap in 11 flowing velocity of electrolyte gradually change on the whole,
Pulsation fluidised form is presented in electrolyte 11.
It can be seen that " workpiece proposed by the present invention by carrying out simulation comparison to 11 flow field of electrolyte in processing gap
Move back and forth and assist axial fliud flushing electrolysis wire-electrode cutting and processing method and device " it can accelerate to process the exclusion of gap Inner electrolysis product
With the update of electrolyte 11, electrolysis cutting processing efficiency and machining accuracy are improved.
Claims (3)
- Axial fliud flushing is assisted to be electrolysed wire-electrode cutting and processing method 1. a kind of workpiece moves back and forth, it is characterised in that:Linear cutter workpiece is electrolysed using axial fliud flushing, while workpiece (18) does feeding cutting movement to line electrode (14) Workpiece (18) moves reciprocatingly, and the reciprocating motion of workpiece (18) includes the reciprocating motion and work of workpiece (18) along feeding machine direction Reciprocating motion of the part (18) along line electrode (14) axial direction；When workpiece (18) moves reciprocatingly along direction of feed, the distance between workpiece (18) and line electrode (14) generating period Variation, between the two away from moment increase, be conducive to electrolyte (11) more more smoothly enter feeding end faces processing gap in, it is thorough Bottom washes away electrolysate, updates electrolyte (11), accelerates cell reaction speed, improves electrolysis cutting processing efficiency；Simultaneously as The increase in end face processing gap is fed, so that electrolyte (11) can be flowed therethrough quickly, reduces electrolyte (11) flow velocity Linear loss reduces electrolyte (11) in the flow velocity difference of processing gap top and the bottom, improves electrolysis cutting processing precision；When workpiece (18) is along line electrode (14) axially reciprocating, the distance between workpiece (18) and nozzle (17) generating period Property variation, feeding end face processing gap in electrolyte (11) flow velocity constantly change on the whole so that front end processing gap in Pulsation fluidised form is presented in electrolyte (11), further speeds up the exclusion of electrolysate and the update of electrolyte (11), improves electrolysis and cuts Cut processing efficiency；Meanwhile adsorbed electrolyte (11) can be thrown out of under the action of inertia force in machined joint-cutting out, contract The flow field domain (19) of small joint-cutting electrolyte inside (11) reduces the dispersion corrosion to cut surface, improves electrolysis cutting processing precision.
- 2. realize that workpiece described in claim 1 moves back and forth the device for assisting axial fliud flushing electrolysis wire-electrode cutting and processing method, It is characterized in that:Including five-axis machine tool system, anode system, line electrode system；Above-mentioned five-axis machine tool system include X-axis workbench, Y-axis workbench, Z axis workbench, X axis workbench, Y axis workbench, Platen (13)；The X axis of X axis workbench is mounted on Y axis workbench, and the Y axis of Y axis workbench is mounted on Z axis work Make on platform, on the Z axis installation Y-axis workbench of Z axis workbench, the Y-axis of Y-axis workbench is mounted on X-axis workbench, X-axis work The X-axis of platform is mounted on platen (13)；Five-axis machine tool system further includes industrial personal computer (2) and motion control card (3)；Above-mentioned anode system includes anode clamp (12), workpiece (18)；Workpiece (18) is mounted in anode clamp (12), anode clamp Tool (12) is mounted on X axis workbench；Above-mentioned line electrode system includes cathode fixture (10), line electrode (14), nozzle (17), diversion cavity (16), guider (15)； Wherein cathode fixture (10) is fixedly mounted on machine pillar (4)；Line electrode (14), nozzle (17), diversion cavity (16), guider (15) four are coaxially mounted in cathode fixture (10).
- 3. workpiece according to claim 2 moves back and forth the method for assisting axial fliud flushing electrolysis wire electric discharge machine, It is characterized in that:The Union Movement of the feeding module isolated operation of X-axis and Y-axis, control X-axis, Y-axis drives workpiece (18) and line electrode (14) relative feed movement between；The feeding module of Z axis is solely run, and controls the up and down motion of Z axis to drive workpiece (18) to do along line electrode (14) axial direction It moves back and forth；X axis, feeding module and the X-axis of Y axis, Y-axis feeding module in conjunction with, when workpiece (18) to line electrode (14) do it is opposite into While to movement, the Union Movement of control X axis, Y axis drives the workpiece (18) to move reciprocatingly along direction of feed motion.
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| CN201910038825.5A CN109693009B (en) | 2019-01-16 | 2019-01-16 | Workpiece reciprocating motion assisted axial flushing electrolytic wire cutting machining method and device |
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| CN110076405A (en) * | 2019-05-10 | 2019-08-02 | 中国航发南方工业有限公司 | Shaped Cathode for radial diffuser inter-leaf flow channel forming |
| CN110340467A (en) * | 2019-06-28 | 2019-10-18 | 南京航空航天大学 | Be open symmetrical cathode tongue-and-groove electrolytic machining device and method |
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| CN110560811A (en) * | 2019-08-15 | 2019-12-13 | 武汉机床有限责任公司 | Control method and system of PCD cutter wire-electrode cutting five-axis numerical control software |
| CN117020342A (en) * | 2023-10-09 | 2023-11-10 | 河南工学院 | Rotary wire electrode auxiliary type electrolytic wire cutting machining device and application method thereof |
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| CN110340467A (en) * | 2019-06-28 | 2019-10-18 | 南京航空航天大学 | Be open symmetrical cathode tongue-and-groove electrolytic machining device and method |
| CN110394516A (en) * | 2019-07-23 | 2019-11-01 | 南京航空航天大学 | High locality pulsation state electrolysis wire-electrode cutting and processing method and device |
| CN110560811A (en) * | 2019-08-15 | 2019-12-13 | 武汉机床有限责任公司 | Control method and system of PCD cutter wire-electrode cutting five-axis numerical control software |
| CN117020342A (en) * | 2023-10-09 | 2023-11-10 | 河南工学院 | Rotary wire electrode auxiliary type electrolytic wire cutting machining device and application method thereof |
| CN117020342B (en) * | 2023-10-09 | 2024-01-26 | 河南工学院 | Rotary wire electrode auxiliary type electrolytic wire cutting machining device and application method thereof |
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