CN1410212A - Aqueous medium electric spark processing machine tool - Google Patents
Aqueous medium electric spark processing machine tool Download PDFInfo
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- CN1410212A CN1410212A CN 02133853 CN02133853A CN1410212A CN 1410212 A CN1410212 A CN 1410212A CN 02133853 CN02133853 CN 02133853 CN 02133853 A CN02133853 A CN 02133853A CN 1410212 A CN1410212 A CN 1410212A
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- electric spark
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Abstract
An electrospark machine-tool with water medium features that its cutting unit is the electrospark discharge electrode fixed to the electrospark servo system connected to an electrospark control system and the water used as its working medium is sprayed in the space between the discharge electrode and the workpiece by a nozzle. Its advantages are high heat capacity, good cooling effect, no carbon deposit, high machining precision and speed, saving energy by 40% and long service life.
Description
(1) technical field:
The present invention relates to a kind of processing equipment, particularly a kind of aqueous medium electric spark processing machine tool.
(2) background technology:
Traditional machining tool, as lathe, milling machine, planer, grinding machine etc., its topping machanism is the cutter made from carbide alloy, as lathe tool, milling cutter, planing tool, grinding tool, because the cutting tool loss is very fast when processing work, therefore to expend a large amount of expensive carbide alloy; And because traditional machining tool cutting force is big, be difficult to processing slim type, slim workpiece, and excessive cutting force influences the machining accuracy of lathe, shortened the service life of precision machine tool.The now existing machine technology that utilizes electric spark to process, but this machine only limits to electric spark-erosion perforation, moulding and carries out line with electric spark and cut, and do not develop more purposes.
(3) summary of the invention:
The present invention will disclose a kind of processing with spark discharge and replace hard alloy cutter processing, and anti-dandruff ability is strong, can cut hard alloy, superhard alloy workpiece, and cutting force is very little, but the aqueous medium electric spark processing machine tool of processing slim, frivolous workpiece.
Aqueous medium electric spark processing machine tool comprises topping machanism, and described topping machanism is the spark discharge electrode, and sparking electrode is fixed on the electric spark servo-drive system, is connected with the electric spark control system; Also has a nozzle alignment that links to each other with water pipe between sparking electrode and processing work.
The electric spark control system is made of amount of feeding checkout gear, electric spark checkout gear, electric spark power supply, impulse generator, Control System of Microcomputer; Amount of feeding checkout gear and electric spark checkout gear (22) are transferred to Control System of Microcomputer with monitoring information, and Control System of Microcomputer is controlled the motion and the impulse generator of electric spark servo-drive system as required, thus control electric spark power supply.
Impulse generator sends by firing pulse, pilot pulse, the synthetic compound discharge waveform of heavy current pulse.
Compound discharge wave is: firing pulse is the high pressure of 100～300V, and electric current is 0.1～5A, and pulsewidth is between 5us～1500us; After firing pulse sends 3～5us, send a pilot pulse, its waveform is partly trapezoidal, allows the pilot pulse electric current by rise to rated value in 5～35us; Pilot pulse sends after 30us～100us, sends a heavy current pulse again.
The electric spark power supply is the chopping wave constant current power supply, comprises drive circuit, and the input of drive circuit links to each other with the output of impulse generator, and the base stage of the high power valve in its output and the power supply circuits links to each other; The input of copped wave sample circuit links to each other with the emitter stage of high power valve, and the copped wave control signal of its output output is controlled the high power valve of flowing through, when electric current reaches definite value, and the high power valve blocking-up.
Described aqueous medium electric spark processing machine tool can be made into aqueous medium spark machined lathe, it comprise motor, frame and be installed on the frame, with the headstock of driven by motor, workpiece is sandwiched on the anchor clamps on the headstock, and with its rotation; Sparking electrode is fixed on the electric spark servo-drive system, connects the electric spark control system, reaches nozzle.
Described aqueous medium electric spark processing machine tool also can be made into aqueous medium spark machined planer, is described electric spark servo-drive system is installed on the knife rest on the planer, connects electric spark control system, and nozzle.
Described aqueous medium electric spark processing machine tool also can be made into aqueous medium spark machined milling machine, is described electric spark servo-drive system is installed on the knife rest on the milling machine, connects electric spark control system, and nozzle.
Described aqueous medium electric spark processing machine tool also can be made into aqueous medium spark machined grinding machine, is with described electric spark servo-drive system) be fixed on the knife rest on the grinding machine, connect the electric spark control system, reach nozzle.
The operation principle of this electric spark machine tool is: discharging gap is in working solution; produce powerful electric spark between workpiece and electrode; moment, high temperature gasified the workpiece machined surface; the instantaneous pressure that produces pops etched matter; and electrode is owing to conduct heat fast than workpiece; under the protection of discharge waveform, polar effect and working solution, the loss of electrode seldom, thereby reach the purpose that replaces cutting element to carry out car, mill, dig, grind with electric spark.
Because this machining tool uses light water to make working solution, compare with the spark machined machinery of the liquid of working with oil, it is big to have thermal capacitance; cooling protection effect to electrode improves greatly; can not produce carbon distribution, but processing rigid, superhard alloy; titanium alloy, heat resisting steel, stainless steel, hardened steel and diamond etc.; improve process velocity and machining accuracy, increased the ignition distance that causes electric spark, lost the thing exquisiteness; add man-hour at dark aperture and large tracts of land, be convenient to get rid of and lose thing.These a series of advantages for spark machined replaces machining, provide very advantageous conditions.And owing to use the light water liquid of working, do not have secondary pollution, working solution wide material sources, reliable can not bring out fire, particularly added water circle device after, save the energy more, help environmental protection.
Because this novel lathe replaces cutter processing with spark discharge processing, it is minimum that its cutting force reduces to, thereby be easy to processing slim axle, the unmanageable workpiece of machine tool such as frivolous; But machining shape complicated parts also is as irregularly-shaped hole, submarine propeller, gas turbine blades etc.And less cutting force can make machine tool accuracy obtain fine maintenance, has prolonged the service life of lathe greatly.
Because the electric spark electric supply installation of this aqueous medium electric spark processing machine tool adopts the chopping wave constant current mode to replace the mode that general power supply circuits use big resistance current limliting, cancelled the huge current-limiting resistance that generates heat, therefore energy-conservation more about 40% than the mode of usefulness current-limiting resistance, and the volume of whole rack little about 2/3.Discharge waveform of the present invention adopts complex method, at first send is firing pulse, firing pulse is the high-voltage pulse about 300V, its discharging gap is bigger, in order to discharging electric etched matter, pulsewidth is adjustable between 5us～1500us, after firing pulse sends 3～5us, send a pilot pulse, its waveform is partly trapezoidal, allow the pilot pulse electric current about 30us, rise to rated value, to reduce export license, after pilot pulse sends 30us～100us, send a powerful current impulse again, with increase ablation amount, thereby reach the purpose that replaces machine cut.
(4) description of drawings:
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is chopping wave constant current circuit theory diagrams of the present invention.
Fig. 3 is a spark machined lathe embodiment block diagram.
(5) specific embodiment:
When concrete enforcement is of the present invention, it can be the lathe tool that replaces lathe with spark discharge electrode 1, make the spark machined lathe, also available spark discharge mechanism replaces milling cutter, planing tool, grinding tool to make other machining tools such as milling machine, planer, grinding machine, sparking electrode 1 is fixed on the electric spark servo-drive system 23, and electric spark servo-drive system 23 is connected with electric spark control system 2; Also have a nozzle that links to each other with water pipe 3 in alignment with between sparking electrode 1 and the processing work 4, constantly water spray is created condition of work, protection sparking electrode 1, and go out surface of the work and lose thing.Described electric spark control system 2 by the amount of feeding checkout gear 21 that detects the workpiece amount of feeding, detect the electric spark size electric spark checkout gear 22, for the electric spark power supply 26 of sparking electrode 1 power supply, and impulse generator 25, Control System of Microcomputer 24 constitute; Amount of feeding checkout gear 21 and electric spark checkout gear 22 are transferred to Control System of Microcomputer 24 with monitoring information, Control System of Microcomputer 24 is controlled the motion of electric spark servo-drive system 23 and the impulse magnitude that impulse generator 25 is sent as required, thus control electric spark power supply 26.In order to protect sparking electrode 1, what impulse generator 25 was sent is by firing pulse, pilot pulse, the synthetic compound discharge waveform of heavy current pulse, and described compound discharge wave is: firing pulse is the high pressure of 100～300V, and electric current is 0.1～5A, and pulsewidth is between 5us～1500us; After firing pulse sends 1～5us, send a pilot pulse, pilot pulse and firing pulse transmission interval are too short, and then sparking electrode 1 loss is too big, and the oversize then spark of pilot pulse and firing pulse transmission interval is difficult to continuously; And for fear of the galvanic corrosion of electron stream to sparking electrode 1, the waveform of pilot pulse is partly trapezoidal, allows electric current progressively raise, and preferably allows the pilot pulse electric current by rise to rated value in 5～35us; For reducing sparking electrode 1 loss, pilot pulse sends after 30us～100us, sends a heavy current pulse again, and the effect of heavy current pulse is to strengthen the galvanic corrosion amount.Because general electric spark power supply is with big resistance current limliting, this current-limiting method electric energy loss is big, therefore, electric spark power supply 26 of the present invention adopts the chopping wave constant current power supply, it comprises drive circuit 261, the input of drive circuit 261 links to each other with the output of impulse generator 25, and the base stage of the high power valve 2621 in its output and the power supply circuits 262 links to each other; The input of copped wave sample circuit 263 links to each other with the emitter stage of high power valve 2621, and the copped wave control signal 264 of its output output is controlled the high power valve 2621 of flowing through, when electric current reaches definite value, and high power valve 2621 blocking-up.
Fig. 3 is the lathe tool that replaces lathe with spark discharge electrode 1, makes the spark machined lathe, this lathe comprise motor, frame and be installed on the frame, with the headstock of driven by motor, workpiece is sandwiched on the anchor clamps on the headstock, and with its rotation; Be used for substituting lathe tool and be fixed in electric spark servo-drive system 23 as the spark discharge electrode 1 of topping machanism, described electric spark servo-drive system 23 is by stepper motor and accurate screw mandrel and guide rail on it and its fixture that is fixed on the lathe is constituted, between nozzle 3 alignment pieces 4 and sparking electrode 1 that link to each other with water pipe, nozzle 3 can be connected so that be synchronized with the movement with electric spark servo-drive system 23.For energy savings, the protection environment, this lathe also is provided with a working solution and follows return device, this device comprises the water tank 5 of lathe below, with in the reflux pump that links to each other 6, the input of reflux pump 6 links to each other with water tank, the output of reflux pump 6 links to each other with nozzle 3.
In concrete enforcement of the present invention; also available spark discharge electrode 1 replaces the planing tool of planer; connect electric spark control system 2; then make the spark machined planer; promptly be that electric spark servo-drive system 23 is loaded on the knife rest of planer; for energy savings, the protection environment, this planer also can be adorned a working solution and follow return device.
In concrete enforcement of the present invention, also available spark discharge electrode 1 replaces the milling cutter of milling machine, connects electric spark control system 2, then makes the spark machined milling machine, promptly is that electric spark servo-drive system 23 is loaded on the knife rest of milling machine.For energy savings, the protection environment, this milling machine also can be adorned a working solution and follow return device.
In concrete enforcement of the present invention, also available spark discharge electrode 1 replaces the grinding tool of grinding machine, connects electric spark control system 2, then makes the spark machined grinding machine, promptly is that electric spark servo-drive system 23 is loaded on the knife rest of grinding machine.For energy savings, the protection environment, this grinding machine also can be adorned a working solution and follow return device.
Claims (10)
1, aqueous medium electric spark processing machine tool comprises topping machanism, it is characterized in that: described topping machanism is spark discharge electrode (1), and sparking electrode (1) is fixed on the electric spark servo-drive system (23), is connected with electric spark control system (2); Also has a nozzle that links to each other with water pipe (3) in alignment with between sparking electrode (1) and the processing work (4).
2, aqueous medium electric spark processing machine tool according to claim 1 is characterized in that: described electric spark control system (2) is made of amount of feeding checkout gear (21), electric spark checkout gear (22), electric spark power supply (26), impulse generator (25), Control System of Microcomputer (24); Amount of feeding checkout gear (21) and electric spark checkout gear (22) are transferred to Control System of Microcomputer (24) with monitoring information, Control System of Microcomputer (24) is controlled the motion and the impulse generator (25) of electric spark servo-drive system (23) as required, thus control electric spark power supply (26).
3, aqueous medium electric spark processing machine tool according to claim 2 is characterized in that: impulse generator (25) sends by firing pulse, pilot pulse, the synthetic compound discharge waveform of heavy current pulse.
4, aqueous medium electric spark processing machine tool according to claim 3 is characterized in that: described compound discharge wave is: firing pulse is the high pressure of 100～300V, and electric current is 0.1～5A, and pulsewidth is between 5us～1500us; After firing pulse sends 3～5us, send a pilot pulse, its waveform is partly trapezoidal, allows the pilot pulse electric current by rise to rated value in 5～35us; Pilot pulse sends after 30us～100us, sends a heavy current pulse again.
5, aqueous medium electric spark processing machine tool according to claim 3, it is characterized in that: described electric spark power supply (26) is the chopping wave constant current power supply, comprise drive circuit (261), the input of drive circuit (261) links to each other with the output of impulse generator (25), the base stage of the high power valve (2621) in its output and the power supply circuits (262) links to each other: the input of copped wave sample circuit (263) links to each other with the emitter stage of high power valve (2621), the copped wave control signal (264) of its output output is controlled the high power valve (2621) of flowing through, when electric current reaches definite value, high power valve (2621) blocking-up.
6, aqueous medium electric spark processing machine tool according to claim 4, it is characterized in that: described electric spark power supply (26) is the chopping wave constant current power supply, comprise drive circuit (261), the input of drive circuit (261) links to each other with the output of impulse generator (25), the base stage of the high power valve (2621) in its output and the power supply circuits (262) links to each other: the input of copped wave sample circuit (263) links to each other with the emitter stage of high power valve (2621), copped wave control signal (264) control of its output output flow through high power valve (2621) when electric current reaches definite value, high power valve (2621) is blocked.
7, according to any one described aqueous medium electric spark processing machine tool in the claim 1～6, it is characterized in that: described aqueous medium electric spark processing machine tool is an aqueous medium spark machined lathe, comprise motor, frame and be installed on the frame, with the headstock of driven by motor, workpiece is sandwiched on the anchor clamps on the headstock (7), and with its rotation; Sparking electrode 1 is fixed on the electric spark servo-drive system (23), connects electric spark control system (2), reaches nozzle (3).
8, according to any one described aqueous medium electric spark processing machine tool in the claim 1～6, it is characterized in that: described aqueous medium electric spark processing machine tool is an aqueous medium spark machined planer, be that described electric spark servo-drive system (23) is installed on the knife rest on the planer, connect electric spark control system (2), and nozzle (3).
9, according to any one described aqueous medium electric spark processing machine tool in the claim 1～6, it is characterized in that: described aqueous medium electric spark processing machine tool is an aqueous medium spark machined milling machine, be that described electric spark servo-drive system (23) is installed on the knife rest on the milling machine, connect electric spark control system (2), and nozzle (3).
10, according to any one described aqueous medium electric spark processing machine tool in the claim 1～6, it is characterized in that: described aqueous medium electric spark processing machine tool is an aqueous medium spark machined grinding machine, be that described electric spark servo-drive system (23) is fixed on the knife rest on the grinding machine, connect electric spark control system (2), and nozzle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133853 CN1410212A (en) | 2002-09-30 | 2002-09-30 | Aqueous medium electric spark processing machine tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133853 CN1410212A (en) | 2002-09-30 | 2002-09-30 | Aqueous medium electric spark processing machine tool |
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| CN1410212A true CN1410212A (en) | 2003-04-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103658878A (en) * | 2012-09-06 | 2014-03-26 | 上海汉霸机电有限公司 | Electric machining device for machining molybdenum metal |
| CN104475886A (en) * | 2014-12-25 | 2015-04-01 | 西安建筑科技大学 | Chopped-mode energy-saving electromachining pulse power supply |
| CN104677542A (en) * | 2015-03-16 | 2015-06-03 | 山东大学 | Measuring system and measuring method for electric spark discharge impact force |
| CN106216783A (en) * | 2016-07-28 | 2016-12-14 | 北海明杰科技有限公司 | A kind of injection hole on injection nozzle quenching processing technique |
| CN109702280A (en) * | 2019-03-01 | 2019-05-03 | 南京工程学院 | A kind of control system of small-sized electric discharge machining apparatus |
-
2002
- 2002-09-30 CN CN 02133853 patent/CN1410212A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103658878A (en) * | 2012-09-06 | 2014-03-26 | 上海汉霸机电有限公司 | Electric machining device for machining molybdenum metal |
| CN103658878B (en) * | 2012-09-06 | 2016-05-04 | 上海汉霸机电有限公司 | A kind of for processing the electric machining device of molybdenum |
| CN104475886A (en) * | 2014-12-25 | 2015-04-01 | 西安建筑科技大学 | Chopped-mode energy-saving electromachining pulse power supply |
| CN104475886B (en) * | 2014-12-25 | 2017-02-22 | 西安建筑科技大学 | Chopped-mode energy-saving electromachining pulse power supply |
| CN104677542A (en) * | 2015-03-16 | 2015-06-03 | 山东大学 | Measuring system and measuring method for electric spark discharge impact force |
| CN106216783A (en) * | 2016-07-28 | 2016-12-14 | 北海明杰科技有限公司 | A kind of injection hole on injection nozzle quenching processing technique |
| CN109702280A (en) * | 2019-03-01 | 2019-05-03 | 南京工程学院 | A kind of control system of small-sized electric discharge machining apparatus |
| CN109702280B (en) * | 2019-03-01 | 2021-02-09 | 南京工程学院 | Control system of small-sized electric spark machining device |
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