CN102078991B - Intelligent exchange method and intelligent exchange device for working solution of electric spark linear cutting machine - Google Patents
Intelligent exchange method and intelligent exchange device for working solution of electric spark linear cutting machine Download PDFInfo
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- CN102078991B CN102078991B CN 201010617167 CN201010617167A CN102078991B CN 102078991 B CN102078991 B CN 102078991B CN 201010617167 CN201010617167 CN 201010617167 CN 201010617167 A CN201010617167 A CN 201010617167A CN 102078991 B CN102078991 B CN 102078991B
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Abstract
The invention discloses an intelligent exchange method and intelligent exchange device for a working solution of an electric spark linear cutting machine. The intelligent exchange device comprises a machine working table liquid tank, an upper wire arm liquid supply pipe, a lower wire arm liquid supply pipe, a rough machining liquid tank, a finish machining liquid tank, a feed liquid two-position three-way electromagnetic directional valve and a return liquid two-position three-way electromagnetic directional valve, wherein two liquid inlets of the feed liquid two-position three-way electromagnetic directional valve are connected with the rough machining liquid tank or finish machining liquid tank through respective connection pipelines and single-phase electric pumps respectively, and a working liquid port is connected with the upper and lower wire arm liquid supply pipes; the working liquid port of the return liquid two-position three-way electromagnetic directional valve, is communicated with the bottom of the machine working table liquid tank through a pipeline which is provided with a conductivity sensor; two liquid outlets of the two-position three-way electromagnetic directional valve correspond to the rough machining liquid tank or finish machining liquid tank through respective return liquid pipelines respectively; and two single-phase electric pumps, two two-position three-way electromagnetic directional valves and the conductivity sensor are all connected with a digital signal processor. According to the invention, the performance of the working liquid can be ensured to be stable and unchanged for a remarkably long time, the technological requirements of fine machining are met, and the machining cost of a user is reduced.
Description
Technical field
The present invention relates to a kind of intelligent switching method and device for working solution of electric spark linear cutting machine.
Background technology
Electric spark linear cutting machine adds man-hour in discharge, what all adopt is the compound working solution of water+additive, its effect one is as discharge medium, the 2nd, electric discharge machining process is cooled off, and a wire cutting machine tool all must configure a cover working solution and supply with-collect EGR thus; In the process, workpiece is produced many galvanic corrosion products by galvanic corrosion and sneaks in the working solution, and galvanic corrosion is the process of a very complex, wherein existing electrolytic ionization, also the process of melt and dissolved, gasification, carbonization is arranged, simultaneously also with chemical reaction process; Working solution as discharge medium, its performance stable most important, and the decay of working liquid capability is directly proportional with discharge energy and time, carry out that the first cutter rough lumber adds man-hour since discharge energy large (average current is 4 ~ 5A), this moment, the performance degradation of working solution was the fastest, refine adds man-hour because discharge energy is very little by (0.2 ~ 0.4A) when carrying out, and the processing removal amount is also considerably less (so thickness is also considerably less at 0.005 ~ 0.05mm) the galvanic corrosion thing that produces usually, therefore the performance to working solution exerts an influence hardly within considerable time, yet, because same working solution feedway is generally adopted in rough lumber and the refine of wire cutting machine tool at present, so caused performance degradation by rough lumber, the working solution that destroys just directly affects the precision of refine processing when being used for refine, and working solution is changed frequent, although also there is the working solution feedway that water tank with strainer is divided into two zones, but the working solution of all processing all extracts the same area after filtering, although the working solution of present most of manufacturer all passes through again paper element filtering, but to the performance degradation of additive in the working solution itself still (can only filtration fraction galvanic corrosion thing) of no avail, and, if filtering accuracy is too high, when filtering the galvanic corrosion thing, also additive can be filtered out, this more is unfavorable for the stable of working liquid capability, can't guarantee that the stable performance of working solution is constant within considerable time, can not refine add the technological requirement in man-hour.
Summary of the invention
The object of the invention is to the above-mentioned deficiency for prior art, a kind of intelligent switching method and device of working solution of electric spark linear cutting machine are provided, it can guarantee that within considerable time the stable performance of refine processing work liquid is constant, thereby satisfy the technological requirement that refine adds man-hour, improve machining accuracy, and avoided the inaccuracy of artificial judgement, and saved resource, reduced user's processing cost.
For achieving the above object, the intelligent switch of working solution of electric spark linear cutting machine of the present invention, comprise the platen liquid bath, on, lower silk arm feed pipe, characterized by further comprising the roughing liquid bath, the fine finishining liquid bath, a feed liquor two position, three-way electromagnetic change valve, one is returned the liquid two position, three-way electromagnetic change valve, wherein the connecting line of an inlet of feed liquor two position, three-way electromagnetic change valve by separately links to each other with the roughing liquid bath with single-phase electric pump, another inlet links to each other its working solution mouth and upper by connecting line separately with the fine finishining liquid bath with single-phase electric pump, lower silk arm feed pipe links to each other; The working solution mouth that returns the liquid two position, three-way electromagnetic change valve communicates by the bottom of pipeline with the platen liquid bath, and be provided with conductivity sensor at this pipeline, one liquid outlet of this time liquid two position, three-way electromagnetic change valve is corresponding with the roughing liquid bath by liquid back pipe road separately, another liquid outlet is corresponding with the fine finishining liquid bath by liquid back pipe road separately, and two single-phase electric pumps, two two position, three-way electromagnetic change valves all link to each other with digital signal processor with conductivity sensor.
The present invention is used for the intelligent switching method of the working solution of electric spark linear cutting machine of said apparatus, it is characterized in that may further comprise the steps: 1) by digital signal processor one electrical conductivity preset upper limit value and default lower limit are set, and set: when the electrical conductivity that detects working fluid when conductivity sensor was lower than default lower limit, digital signal processor sent cue; Preset upper limit value is as the critical value of judging fine finishining liquid and roughing liquid, and default lower limit is as the critical value of judging whether roughing liquid lost efficacy; 2) during normal roughing, guarantee to use all the time working solution in the roughing liquid bath by single-phase electric pump corresponding to digital signal processor (DSP) control, two two position, three-way electromagnetic change valves, the electrical conductivity that this moment, conductivity sensor detected working solution in the pipeline is lower than preset upper limit value and is higher than default lower limit; 3) when changing fine finishining over to, switch single-phase electric pump and allow feed liquor two position, three-way electromagnetic change valve exchange station by digital signal processor, the interior working solution of fine finishining liquid bath begins to convert, when the electrical conductivity of working solution is higher than preset upper limit value in conductivity sensor detects pipeline, show that intrasystem roughing liquid drains fully, used fine finishining liquid this moment, allow back the liquid two position, three-way electromagnetic change valve exchange station by digital signal processor, so that fine finishining liquid flows back to the fine finishining liquid bath; When 4) changing roughing over to again, switch single-phase electric pump and allow feed liquor two position, three-way electromagnetic change valve exchange station by digital signal processor, the interior working solution of roughing liquid bath begins to convert, the electrical conductivity of working solution is lower than preset upper limit value and is higher than when presetting lower limit in conductivity sensor detects pipeline, show and sneaked into roughing liquid in the system, allow back liquid two position, three-way electromagnetic change valve exchange station by digital signal processor this moment, so that working solution flows back to the roughing liquid bath; Along with rising to a certain degree of process time, during roughing, when the electrical conductivity that detects roughing liquid when conductivity sensor is lower than default lower limit (because of the decay of roughing liquid, inefficacy is faster than fine finishining liquid, only need the decay by this default lower limit monitoring roughing liquid), digital signal processor sends the signal prompt user automatically by pre-set programs, require to change working solution, the user processed and cleaned clean roughing liquid bath to the working solution in the roughing liquid bath this moment, convert new liquid, to digital signal processor input liquid bath transformation directive, roughing liquid is that auto-changing is by former fine finishining liquid bath feed flow (when exceeding standard because of roughing liquid electrical conductivity, former fine finishining liquid electrical conductivity still changes not quite, can guarantee for roughing fully), fine finishining liquid then is transformed to by newly converting the liquid bath feed flow, so circulation, namely realize the intelligence exchange of roughing liquid and fine finishining liquid, guaranteed in considerable time thick, the stable performance of fine finishining liquid is constant, thereby satisfy the technological requirement that refine adds man-hour, improved machining accuracy, judge the necessity that working solution is changed by conductivity sensor simultaneously, avoided the inaccuracy of artificial judgement, thick simultaneously, the fine finishining liquid bath splits and can prolong the service life of working solution, save resource, reduced user's processing cost;
Further improvement as the present invention's intelligence switch also is provided with the conductivity sensor that links to each other with digital signal processor in the fine finishining liquid bath; Corresponding, intelligent switching method of the present invention, set by digital signal processor: when the electrical conductivity that detects fine finishining liquid when antifouling conductivity sensor was lower than preset upper limit value, digital signal processor sent alarm signal; Whether the performance that can monitor the fine finishining liquid in the fine finishining liquid bath is lower than requirement, avoids incident to pollute fine finishining liquid, guarantees that refine processing carries out fully normally;
As the further improvement of the present invention intelligence switch, be equipped with filter and overflow valve at the connecting line of the two single-phase electric pumps inlet corresponding with the feed liquor two position, three-way electromagnetic change valve; Can improve the degree of purity of working solution, and the control flow;
As the further improvement of the present invention intelligence switch, be equipped with screen pack at the oral area of each single-phase electric pump feed liquor connecting line; Can further improve the degree of purity of working solution;
As the further improvement of the present invention intelligence switch, be equipped with filter cylinder at the madial wall of roughing liquid bath and fine finishining liquid bath, the two liquid back pipe roads of returning the liquid two position, three-way electromagnetic change valve are corresponding with separately filter cylinder respectively; Can further improve the degree of purity of working solution;
As the further improvement of the present invention's intelligence switch, be equipped with control valve at upper and lower silk arm feed pipe; Can control the liquid supply rate of working solution;
In sum, the present invention can guarantee that the stable performance of working solution in considerable time is constant, thereby satisfies the technological requirement that refine adds man-hour, and has avoided the inaccuracy of artificial judgement, has saved resource, has reduced user's processing cost.
Description of drawings
Fig. 1 is the structural representation of the intelligent switch embodiment of working solution of electric spark linear cutting machine of the present invention.
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
As shown in Figure 1, the intelligent switch of this working solution of electric spark linear cutting machine, comprise platen liquid bath 1, upper silk arm feed pipe 2, lower silk arm feed pipe 3, roughing liquid bath 4, fine finishining liquid bath 5, a feed liquor two position, three-way electromagnetic change valve 6, one is returned liquid two position, three-way electromagnetic change valve 7, upper, be equipped with control valve 8 on the lower silk arm feed pipe 2 and 3, wherein the connecting line 9 of two inlets of feed liquor two position, three-way electromagnetic change valve 6 by separately links to each other with roughing liquid bath 4 or fine finishining liquid bath 5 respectively with single-phase electric pump 10 or 17, and be equipped with filter 11 and overflow valve 12 at this connecting line 9, its working solution mouth and upper, lower silk arm feed pipe 2 links to each other with 3, is equipped with screen pack 13 at the oral area of the feed liquor connecting line 9 of each single-phase electric pump 10; The working solution mouth that returns liquid two position, three-way electromagnetic change valve 7 communicates by the bottom of pipeline with platen liquid bath 1, and be provided with conductivity detector 14 at this pipeline, two liquid outlets of this two position, three-way electromagnetic change valve 7 are connected with liquid back pipe road 15 separately, madial wall at roughing liquid bath 4 and fine finishining liquid bath 5 is equipped with filter cylinder 16, two liquid back pipe roads 15 are corresponding with separately filter cylinder 16 respectively, also are provided with antifouling conductivity sensor 18 in fine finishining liquid bath 5; Two single-phase electric pumps 10, two two position, three-way electromagnetic change valves 6 and 7, conductivity detector 14, antifouling conductivity sensor 18 all link to each other with the digital signal processor (not shown).
The intelligent switching method that is used for the working solution of electric spark linear cutting machine of said apparatus, may further comprise the steps: 1) by digital signal processor one electrical conductivity preset upper limit value and default lower limit are set, and set: when the electrical conductivity that detects working fluid when conductivity sensor 14 was lower than default lower limit, digital signal processor sent cue; Preset upper limit value is as the critical value of judging fine finishining liquid and roughing liquid, and default lower limit is as the critical value of judging whether roughing liquid lost efficacy; 2) during normal roughing, by single-phase electric pump 10 corresponding to digital signal processor (DSP) control, two two position, three-way electromagnetic change valves 6,7 working solutions that guarantee to use all the time in the roughing liquid bath 4, the electrical conductivity that this moment, conductivity sensor 14 detected working solution in the pipeline is lower than preset upper limit value and is higher than default lower limit; 3) when changing fine finishining over to, switch to single-phase electric pump 17 and allow feed liquor two position, three-way electromagnetic change valve 6 exchange stations by digital signal processor, working solution in the fine finishining liquid bath 5 begins to convert, when conductivity sensor 14 detects that the electrical conductivity of working solution is higher than preset upper limit value in the pipeline, show that intrasystem roughing liquid drains fully, used fine finishining liquid this moment, allow back liquid two position, three-way electromagnetic change valve 7 exchange stations by digital signal processor again, so that fine finishining liquid flows back to fine finishining liquid bath 5; When 4) changing roughing over to again, switch to single-phase electric pump 10 and allow feed liquor two position, three-way electromagnetic change valve 6 exchange stations by digital signal processor, working solution in the roughing liquid bath 4 begins to convert, when conductivity sensor 14 detects in the pipeline that the electrical conductivity of working solution is lower than preset upper limit value and when being higher than default lower limit, show and sneaked into roughing liquid in the system, allow back liquid two position, three-way electromagnetic change valve 7 exchange stations by digital signal processor this moment, so that working solution flows back to roughing liquid bath 4; Along with rising to a certain degree of process time, during roughing, when detecting 14 electrical conductivity to roughing liquid, conductivity sensor is lower than when presetting lower limit (because of the decay of roughing liquid, inefficacy is faster than fine finishining liquid, only need the decay by this default lower limit monitoring roughing liquid), digital signal processor sends the signal prompt user automatically by pre-set programs, require to change working solution, the user processed and cleaned clean roughing liquid bath to the working solution in the roughing liquid bath 4 this moment, convert new liquid, to digital signal processor input liquid bath transformation directive, roughing liquid is that auto-changing is by former fine finishining liquid bath feed flow (when exceeding standard because of roughing liquid electrical conductivity, former fine finishining liquid electrical conductivity still changes not quite, can guarantee for roughing fully), fine finishining liquid then is transformed to by newly converting the liquid bath feed flow, so circulation, namely realize the intelligence exchange of roughing liquid and fine finishining liquid, guaranteed in considerable time thick, the stable performance of fine finishining liquid is constant, thereby satisfy the technological requirement that refine adds man-hour, improved machining accuracy, judge the necessity that working solution is changed by conductivity sensor simultaneously, avoided the inaccuracy of artificial judgement, thick simultaneously, the fine finishining liquid bath splits and can prolong the service life of working solution, save resource, reduced user's processing cost; When the electrical conductivity that detects fine finishining liquid when antifouling conductivity sensor 18 is lower than preset upper limit value, digital signal processor sends alarm signal, prompting user fine finishining liquid is polluted by incident, needs in time to change fine finishining liquid, guarantees that refine processing carries out fully normally; Filter 11, screen pack 13, filter cylinder 16 can further improve the degree of purity of working solution.
Claims (8)
1. the intelligent switch of a working solution of electric spark linear cutting machine, comprise platen liquid bath, upper and lower silk arm feed pipe, characterized by further comprising roughing liquid bath, fine finishining liquid bath, a feed liquor two position, three-way electromagnetic change valve, one time liquid two position, three-way electromagnetic change valve, wherein the connecting line of an inlet of feed liquor two position, three-way electromagnetic change valve by separately links to each other with the roughing liquid bath with single-phase electric pump, another inlet links to each other with the fine finishining liquid bath with single-phase electric pump by connecting line separately, and its working solution mouth links to each other with upper and lower silk arm feed pipe; The working solution mouth that returns the liquid two position, three-way electromagnetic change valve communicates by the bottom of pipeline with the platen liquid bath, and be provided with conductivity sensor at this pipeline, one liquid outlet of this time liquid two position, three-way electromagnetic change valve is corresponding with the roughing liquid bath by liquid back pipe road separately, another liquid outlet is corresponding with the fine finishining liquid bath by liquid back pipe road separately, and two single-phase electric pumps, two two position, three-way electromagnetic change valves all link to each other with digital signal processor with conductivity sensor.
2. the intelligent switch of working solution of electric spark linear cutting machine as claimed in claim 1 is characterized in that also being provided with the antifouling conductivity sensor that links to each other with digital signal processor in the fine finishining liquid bath.
3. the intelligent switch of working solution of electric spark linear cutting machine as claimed in claim 1 or 2 is characterized in that being equipped with filter and overflow valve at the connecting line of the two single-phase electric pumps inlet corresponding with the feed liquor two position, three-way electromagnetic change valve.
4. the intelligent switch of working solution of electric spark linear cutting machine as claimed in claim 3 is characterized in that being equipped with screen pack at the oral area of each single-phase electric pump feed liquor connecting line.
5. the intelligent switch of working solution of electric spark linear cutting machine as claimed in claim 4, it is characterized in that being equipped with filter cylinder at the madial wall of roughing liquid bath and fine finishining liquid bath, the two liquid back pipe roads of returning the liquid two position, three-way electromagnetic change valve are corresponding with separately filter cylinder respectively.
6. the intelligent switch of working solution of electric spark linear cutting machine as claimed in claim 5 is characterized in that being equipped with control valve at upper and lower silk arm feed pipe.
7. intelligent switching method that is used for the working solution of electric spark linear cutting machine of claim 1, it is characterized in that may further comprise the steps: 1) by digital signal processor one electrical conductivity preset upper limit value and default lower limit are set, and set: when the electrical conductivity that detects working fluid when conductivity sensor was lower than default lower limit, digital signal processor sent cue; Preset upper limit value is as the critical value of judging fine finishining liquid and roughing liquid, and default lower limit is as the critical value of judging whether roughing liquid lost efficacy; 2) during normal roughing, guarantee to use all the time working solution in the roughing liquid bath by single-phase electric pump corresponding to DSP CONTROL, two two position, three-way electromagnetic change valves, the electrical conductivity that this moment, conductivity sensor detected working solution in the pipeline is lower than preset upper limit value and is higher than default lower limit; 3) when changing fine finishining over to, switch single-phase electric pump and allow feed liquor two position, three-way electromagnetic change valve exchange station by digital signal processor, the interior working solution of fine finishining liquid bath begins to convert, when the electrical conductivity of working solution is higher than preset upper limit value in conductivity sensor detects pipeline, show that intrasystem roughing liquid drains fully, used fine finishining liquid this moment, allow back the liquid two position, three-way electromagnetic change valve exchange station by digital signal processor, so that fine finishining liquid flows back to the fine finishining liquid bath; When 4) changing roughing over to again, switch single-phase electric pump and allow feed liquor two position, three-way electromagnetic change valve exchange station by digital signal processor, the interior working solution of roughing liquid bath begins to convert, the electrical conductivity of working solution is lower than preset upper limit value and is higher than when presetting lower limit in conductivity sensor detects pipeline, show and sneaked into roughing liquid in the system, allow back liquid two position, three-way electromagnetic change valve exchange station by digital signal processor this moment, so that working solution flows back to the roughing liquid bath; Along with rising to a certain degree of process time, during roughing, when the electrical conductivity that detects roughing liquid when conductivity sensor is lower than default lower limit, digital signal processor sends the signal prompt user automatically by pre-set programs, require to change working solution, the user processed and cleaned clean roughing liquid bath to the working solution in the roughing liquid bath this moment, convert new liquid, to digital signal processor input liquid bath transformation directive, roughing liquid is that auto-changing is by former fine finishining liquid bath feed flow, fine finishining liquid then is transformed to by newly converting the liquid bath feed flow, and so circulation namely realizes the intelligence exchange of roughing liquid and fine finishining liquid.
8. the intelligent switching method of working solution of electric spark linear cutting machine as claimed in claim 7, it is characterized in that in the fine finishining liquid bath, arranging the antifouling conductivity sensor that links to each other with digital signal processor, set by digital signal processor: when the electrical conductivity that detects fine finishining liquid when antifouling conductivity sensor was lower than preset upper limit value, digital signal processor sent alarm signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010617167 CN102078991B (en) | 2010-12-31 | 2010-12-31 | Intelligent exchange method and intelligent exchange device for working solution of electric spark linear cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010617167 CN102078991B (en) | 2010-12-31 | 2010-12-31 | Intelligent exchange method and intelligent exchange device for working solution of electric spark linear cutting machine |
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| CN102078991A CN102078991A (en) | 2011-06-01 |
| CN102078991B true CN102078991B (en) | 2013-02-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880764A (en) * | 2014-12-29 | 2016-08-24 | 北京工商大学 | Metal rubber filtering system for high speed electrical discharge wire-cutting machine tool |
| CN104858515B (en) * | 2015-06-18 | 2017-06-30 | 湖南劲龙电机有限公司 | Method and device for preparing working solution of wire cut electrical discharge machine |
| CN105215489A (en) * | 2015-09-11 | 2016-01-06 | 苏州市宝玛数控设备有限公司 | A kind of bi-directional symmetrical wire cutting machine |
| JP6564439B2 (en) | 2017-09-20 | 2019-08-21 | ファナック株式会社 | Processing liquid processing apparatus and control method of processing liquid processing apparatus |
| CN112872519B (en) * | 2021-02-23 | 2022-06-21 | 桑明焱 | Liquid spraying device for medium-speed wire cutting and medium-speed wire cutting machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1334161A (en) * | 2001-09-04 | 2002-02-06 | 深圳大学 | Cyclic treating system of working liquid for electrospark machining |
| CN1336859A (en) * | 1999-11-17 | 2002-02-20 | 沙迪克株式会社 | Liquid feeder for electrodischarge machining |
| CN101829818A (en) * | 2010-04-14 | 2010-09-15 | 东莞盈拓科技实业有限公司 | Fluid storage tank for automatically switching machining fluids |
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2010
- 2010-12-31 CN CN 201010617167 patent/CN102078991B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1336859A (en) * | 1999-11-17 | 2002-02-20 | 沙迪克株式会社 | Liquid feeder for electrodischarge machining |
| CN1334161A (en) * | 2001-09-04 | 2002-02-06 | 深圳大学 | Cyclic treating system of working liquid for electrospark machining |
| CN101829818A (en) * | 2010-04-14 | 2010-09-15 | 东莞盈拓科技实业有限公司 | Fluid storage tank for automatically switching machining fluids |
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