CN112570830B - Pulse power supply energy transmission loop in reciprocating wire-moving electrospark wire-electrode cutting machining - Google Patents
Pulse power supply energy transmission loop in reciprocating wire-moving electrospark wire-electrode cutting machining Download PDFInfo
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- CN112570830B CN112570830B CN202011366338.0A CN202011366338A CN112570830B CN 112570830 B CN112570830 B CN 112570830B CN 202011366338 A CN202011366338 A CN 202011366338A CN 112570830 B CN112570830 B CN 112570830B
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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
- B23H7/04—Apparatus for supplying current to working gap; Electric circuits specially adapted therefor
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Abstract
The invention discloses a pulse power supply energy transmission loop in reciprocating wire-moving electrospark wire-electrode cutting processing, which comprises a pulse power supply, an upper conductive block, a lower conductive block, a wire electrode, a workpiece and an upper computer, wherein a first relay is additionally arranged between the negative electrode of the pulse power supply and the upper conductive block, a second relay is additionally arranged between the negative electrode of the pulse power supply and the lower conductive block, the upper conductive block and the lower conductive block are respectively connected with the wire electrode, the positive electrode of the pulse power supply is directly connected with the workpiece, and the upper computer controls the first relay and the second relay to enable the upper conductive block, the lower conductive block and the corresponding wire electrode to be alternately added into a circuit. The invention solves the problems of balanced energy of discharge points at the surface of the workpiece, balanced material removal amount and the like, and relieves the problem of the error of the waist drum degree in the middle.
Description
Technical Field
The invention belongs to the field of reciprocating wire-moving electric spark wire cutting machining, and provides a pulse power supply energy transmission loop in reciprocating wire-moving electric spark wire cutting machining, which is used for reducing the waist drum degree error of the surface of a workpiece during low-power machining.
Background
The high-speed reciprocating wire-moving electrospark wire-electrode cutting machining is a machining technology for etching and removing workpieces by using spark discharge formed between an electrode wire and a machined workpiece, wherein the electrode wire is controlled by a machine tool wire cylinder to reciprocate up and down. Most current pulse power supplies transfer energy in the following ways: the positive pole of the pulse power supply is connected with a workpiece to be machined, the negative pole of the pulse power supply is connected with an upper conductive block and a lower conductive block on a machine tool, the conductive blocks are connected with a wire electrode which moves at a high speed, and a discharge point is formed between the wire electrode and the workpiece, so that materials on the surface of the workpiece are corroded and machined. Workpieces machined in this manner have a serious drum problem for the following reasons:
in the method, the upper and lower conductive blocks are simultaneously conductive, and the discharge point is connected with the conductive blocks through the upper and lower sections of electrode wires which are connected in parallel. When a large-thickness workpiece is machined, when a discharge point is cut at the wire inlet edge and the wire outlet edge of a cutting, the equivalent impedance of a wire electrode connected in parallel in a discharge loop is small, so that the discharge energy is large, and the material removal amount is large; in the middle of the cutting seam, the equivalent resistance of the electrode wire is large, so that the discharge energy is small and the material removal amount is small. Therefore, the material removal amount of the upper end and the lower end of the processed workpiece is large, the material removal amount of the middle part is small, the middle part is protruded, and a waist drum appears; meanwhile, when the discharge energy is large, the electrode wire vibrates, and the problem of waist bulging error is also caused.
Disclosure of Invention
The invention aims to provide a pulse power supply energy transmission circuit in reciprocating wire-cut electrical discharge machining.
The technical solution for realizing the purpose of the invention is as follows: the utility model provides a reciprocal wire cut electrical discharge machining middle pulse power supply energy transmission return circuit of walking, includes pulse power supply, goes up conducting block, wire electrode, work piece, host computer down, add between pulse power supply's negative pole and the last conducting block and establish first relay, add between pulse power supply's negative pole and the conducting block down and establish the second relay, go up the conducting block, down the conducting block connects the wire electrode respectively, pulse power supply's positive pole lug connection work piece, the host computer makes through controlling first relay and second relay and goes up conducting block, down conducting block and the circuit is added in turn to the wire electrode that corresponds.
Furthermore, the host computer produces the signal of control wire electrode advancing direction, and wire electrode advancing direction signal is the high level when wire electrode from the last down advances the silk, and wire electrode advancing direction signal is the low level when wire electrode from the bottom up advances the silk, and this signal access first relay, second relay control first relay and second relay make go up conducting block, lower conducting block staggered access circuit from top to bottom.
Furthermore, the first relay and the second relay are single-pole single-throw normally-open type signal relays or single-pole single-throw normally-closed type signal relays.
Furthermore, when the first relay uses a single-pole single-throw normally-open type signal relay and the second relay uses a single-pole single-throw normally-closed type signal relay, a conductive block conductive loop at the wire feeding end is formed, and when the wire electrode is fed, the conductive block close to the wire feeding end and the wire electrode access circuit work.
Still further, the energy transmission process of the conductive loop of the conductive block at the wire inlet end is as follows:
when the wire traveling direction of the wire electrode is switched from top to bottom, a wire electrode traveling direction signal sent by an upper computer is high level, so that a first relay contact is closed, a second relay contact is disconnected, the upper conductive block is conductive, the lower conductive block is non-conductive, current flows into a processing workpiece from the positive electrode of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, flows into the upper conductive block along the wire electrode, finally flows to the negative electrode of the pulse power supply, and working liquid is sprayed into the processing gap from the wire inlet end, namely the working liquid is sprayed from top to bottom;
when the wire traveling direction of the wire electrode is switched from bottom to top, a wire electrode traveling direction signal sent by the upper computer is at a low level, so that the first relay contact is disconnected, the second relay contact is closed, the upper conductive block is not conductive, the lower conductive block is conductive, current flows into a processing workpiece from the positive pole of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, flows into the lower conductive block along the wire electrode, and finally flows to the negative pole of the pulse power supply, and working fluid is sprayed into the processing gap from the wire feeding end, namely the working fluid is sprayed from bottom to top.
Furthermore, when the first relay uses a single-pole single-throw normally-closed signal relay and the second relay uses a single-pole single-throw normally-open signal relay, a wire outlet end conductive block conductive loop is formed, and when the wire electrode runs, the conductive block close to the wire outlet end and the wire electrode access circuit work.
Still further, the energy transmission process of the conductive loop of the conductive block at the filament outlet end is as follows:
when the wire electrode is in a wire traveling direction from top to bottom, a wire electrode traveling direction signal sent by an upper computer is at a high level, so that a first relay contact is disconnected, a second relay contact is closed, the upper conductive block is not conductive, the lower conductive block is conductive, current flows into a processing workpiece from the positive electrode of the pulse power supply, is transmitted to the wire electrode through a certain discharge point in the discharge gap, flows into the lower conductive block along the wire electrode, and finally flows to the negative electrode of the pulse power supply, and working fluid is sprayed into the processing gap from the wire feeding end, namely the working fluid is sprayed from top to bottom;
when the wire electrode is in a wire moving direction from bottom to top, a wire electrode moving direction signal sent by the upper computer is in a low level, so that the first relay contact is closed, the second relay contact is disconnected, the upper conductive block is conductive, the lower conductive block is non-conductive, current flows into a processing workpiece from the positive pole of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, flows into the upper conductive block along the wire electrode, finally flows to the negative pole of the pulse power supply, and working liquid is sprayed into the processing gap from the wire feeding end, namely the working liquid is sprayed from bottom to top.
Further, the pulse power supply is an AC/DC pulse power supply, a DC/DC pulse power supply, an AC/AC bipolar pulse power supply or a DC/AC bipolar pulse power supply and is used for outputting one or more current waveforms of a triangular wave, a sawtooth wave, a rectangular wave and a step wave.
Further, the electrode wire adopts a molybdenum wire with the radius of 0.09 mm.
A reciprocating wire-moving electric spark wire cutting machining method is based on the pulse power supply energy transmission loop to perform reciprocating wire-moving electric spark wire cutting machining.
Compared with the prior art, the invention has the remarkable advantages that: 1) a relay is added between a pulse power supply and the upper and lower conducting blocks, and the on-off of the output side of the relay is controlled by a wire electrode wire feeding direction signal sent by an upper computer, so that the resistance value of the wire electrode equivalent resistor in an access circuit is increased, the discharge energy of a discharge point can be reduced, the vibration of the wire electrode is reduced, the discharge probability of each part on the surface of a workpiece is balanced, and the machining error is reduced; in addition, the difference between the average discharge energy of the upper end and the lower end of the workpiece and the average discharge energy of the middle of the workpiece is reduced, so that the difference between the erosion removal amount of the upper end and the lower end of the workpiece and the corrosion removal amount of the middle of the workpiece is reduced, and the waist drum degree error is reduced; 2) based on the wire outlet end conductive block conductive loop, the relationship between the electrode wire equivalent resistance of different discharge points and the working fluid concentration is balanced, so that the working fluid concentration of the discharge point with large instantaneous discharge energy is low, the material erosion is not facilitated, the working fluid concentration of the discharge point with small instantaneous discharge energy is high, the material erosion is facilitated, the material erosion quantity difference of each part of a workpiece is further reduced, and the waist drum degree error is reduced.
Drawings
FIG. 1 is a schematic diagram of an energy transmission loop of a pulse power supply according to the present invention.
FIG. 2 is a schematic view of the wire feeding process on the conductive loop of the conductive block at the wire feeding end of the present invention.
FIG. 3 is a schematic view of the lower wire feeding process of the conductive loop of the conductive block at the wire feeding end of the present invention.
FIG. 4 is a schematic view of the wire feeding process on the conductive loop of the conductive block at the wire outlet end according to the present invention.
FIG. 5 is a schematic view of the lower wire feeding process of the conductive loop of the conductive block at the wire outlet end of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
According to the pulse power supply energy transmission loop in the reciprocating wire-moving electric spark wire cutting machining, the upper and lower conductive blocks of the machine tool are alternately connected into the circuit, so that the equivalent resistance of the wire electrode at each discharge point is improved, the discharge energy of each discharge point on the surface of the workpiece and the energy difference of different discharge points are reduced, the energy balance of each discharge point on the surface of the workpiece during discharge is realized, and the problem of waist drum error in the middle is solved.
As shown in figure 1, the pulse power supply energy transmission loop in the reciprocating wire-cut electric discharge machining comprises the following components: pulse power supply and relayK 1、K 2Upper conductive blockD 1Lower conductive blockD 2Electrode wire, workpiece, upper computer and relayK 1A negative electrode and an upper conductive block additionally arranged on the pulse power supplyD 1Between, the relayK 2Negative pole and lower conductive block additionally arranged on pulse power supplyD 2Upper conductive blockD 1Lower conductive blockD 2The electrodes are respectively connected, and the positive pole of the pulse power supply is directly connected with the workpiece. According to the invention, the relay is used for controlling the upper and lower conductive blocks to be alternately added into the circuit, so that the energy balance of discharge points on the surface of a workpiece during discharge is realized, the material removal amount is balanced, and the problem of the middle waist bulging error is solved.
As a preferred embodiment, the pulse power supply is an AC/DC pulse power supply, a DC/DC pulse power supply AC/AC bipolar pulse power supply or a DC/AC bipolar pulse power supply capable of outputting one or more current waveforms including triangular wave, sawtooth wave, rectangular wave, step wave, etc. to provide energy for wire cut electrical discharge machining, wherein the positive pole of the pulse power supply is output to the forward voltage breakdown gap, and the negative pole of the pulse power supply is output to the other side.
The upper computer can generate a signal representing the wire electrode feeding direction, and when the wire electrode is fed from top to bottom, the wire electrode feeding direction signal sent by the upper computer is at a high level; when the electrode wire is fed from bottom to top, the wire feeding direction signal sent by the upper computer is at a low level. The wire electrode direction signal sent by the upper computer is connected to the input sides of the two relaysK 1The output contact is connected with the cathode of the pulse power supply and the upper conductive blockD 1Between, the relayK 2The output contact is connected with the negative pole of the pulse power supply and the lower conductive blockD 2Between, the relayK 1、K 2Under the control of the access signal, the upper and lower conductive blocks are made to be connectedD 1Lower conductive blockD 2An interleaving circuit.
The electrode wire adopts a molybdenum wire with the radius of 0.09 mm.
The pulse power supply energy transmission loop in the reciprocating wire-moving electrospark wire-electrode cutting processing can form a wire inlet end conductive block conductive loop and a wire outlet end conductive block conductive loop. Two types of conductive loops are described below:
conductive loop of conductive block at wire feeding end
The conductive loop of the conductive block at the wire feeding end refers to that when the electrode wire moves, the conductive block close to the wire feeding end and the electrode wire are connected into a circuit to work, and the circuit is used for controlling the operation of the conductive block and the electrode wireTime relayK 1Signal relay using single-pole single-throw normally open typeK 2A single pole single throw normally closed type signal relay is used.
Based on the wire inlet end conductive block conductive loop, the specific energy transmission is as follows:
step 1, as shown in fig. 2, when the wire traveling direction V of the wire electrode is switched from top to bottom, the wire electrode traveling direction signal sent by the upper computer is at a high level, so that the wire electrode traveling direction signal is high levelK 1The contact of the relay is closed,K 2The relay contact is disconnected, and the upper conductive block is connectedD 1Conductive, lower conductive blockD 2Non-conducting, the current flows into the workpiece from the positive pole of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the electrode wire, and flows into the upper conducting block along the ac section of the electrode wireD 1And finally flows to the negative electrode of the pulse power supply. In a preferred embodiment, the working fluid is then preferably injected into the machining gap from the feed end, i.e. the working fluid is injected from the top downwards.
Step 2, as shown in fig. 3, when the wire traveling direction V of the wire electrode is switched from bottom to top, the wire electrode traveling direction signal sent by the upper computer is at a low level, so that the wire electrode traveling direction signal is at a low levelK 1The contact of the relay is disconnected,K 2The relay contact is closed, and the upper conductive block is at the momentD 1Non-conductive, lower conductive blockD 2The current flows into the workpiece from the positive pole of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, and flows into the lower conductive block along the bc section of the wire electrodeD 2And finally flows to the negative electrode of the pulse power supply. In a preferred embodiment, the working fluid is then preferably injected into the machining gap from the feed end, i.e. from the bottom to the top.
And 3, repeating the two processes to finish the reciprocating wire-moving electrospark wire-electrode cutting process.
Based on advance silk end conducting block conducting loop, no matter the wire electrode from the top down walks the silk or from the bottom up walks the silk, compare with the energy transmission return circuit that does not add the relay, wire electrode equivalent resistance is bigger, and consequently the total current is littleer, under the unchangeable condition of clearance sustain voltage, the instantaneous discharge energy of point of discharge is littleer, reduces the wire electrode vibration, and then reduces the machining error that the wire electrode vibration brought. When the direction of the electrode wire is changed repeatedly and the wire is fed, the two conditions of the step 1 and the step 2 appear alternately, and the conductive block is connected to the circuit alternately to work. The action time of step 1 and step 2 is the same per unit time. Based on the conductive loop of the conductive block at the wire feeding end which alternately works, the average discharge energy at each part of the surface of the workpiece is smaller, and the waist drum degree can be reduced; the difference between the average discharge energy at the wire inlet or the wire outlet and the average discharge energy at the middle point of the workpiece is smaller, and the difference between the erosion removal amount of the upper end and the lower end of the workpiece and the erosion removal amount of the middle of the workpiece is smaller, so that the waist drum degree error is reduced.
Conductive loop of conductive block at filament outlet end
The conductive loop of the conductive block at the wire outlet end refers to that when the wire electrode runs, the conductive block close to the wire outlet end and the wire electrode access circuit work, and at the moment, the relayK 1Signal relay using single-pole single-throw normally closedK 2A single pole single throw normally open type signal relay is used.
Based on the conductive loop of the conductive block at the wire outlet end, the energy transmission comprises the following specific steps:
step 1: as shown in fig. 4, when the wire electrode running direction V is from top to bottom, the wire electrode running direction signal sent by the upper computer is at high level, so that the wire electrode running direction signal is high levelK 1The contact of the relay is disconnected,K 2The relay contact is closed, and the upper conductive block is at the momentD 1Non-conductive, lower conductive blockD 2The current flows into the workpiece from the positive pole of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, and flows into the lower conductive block along the bc section of the wire electrodeD 2And finally, the current flows to the negative electrode of the pulse power supply. At the moment, the working fluid is sprayed into the machining gap from the wire inlet end, namely the working fluid is sprayed from top to bottom.
And 2, step: as shown in fig. 5, when the wire traveling direction V of the wire electrode is from bottom to top, the wire electrode traveling direction signal sent by the upper computer is at a low level, so that the wire electrode traveling direction signal is at a low levelK 1The contact of the relay is closed,K 2The relay contact is disconnected, so that it is conductedElectric blockD 1Conductive, lower conductive blockD 2Non-conducting, the current flows into the workpiece from the positive pole of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, and flows into the upper conducting block along the ac section of the wire electrodeD 1And finally, the current flows to the negative electrode of the pulse power supply. In a preferred embodiment, the working fluid is then preferably injected into the machining gap from the feed end, i.e. from the bottom to the top.
And step 3: and (5) repeating the step (1) to step (2) to finish the reciprocating wire-moving electrospark wire-electrode cutting process.
Based on the conductive loop of the conductive block at the wire outlet end, the concentration of the working solution is gradually reduced along with the approach of the conductive block, so that the discharge effect is gradually weakened, the discharge points with large instantaneous discharge energy are not beneficial to material erosion, the discharge points with small instantaneous discharge energy are more beneficial to material erosion, the material erosion amount difference at each position of the workpiece is further reduced, and the waist bulging degree error is reduced.
Claims (7)
1. A pulse power supply energy transmission loop in reciprocating wire-moving electrospark wire-electrode cutting processing comprises a pulse power supply and an upper conductive block (D)1) Lower conductive block (D)2) The electrode wire, the workpiece and the upper computer are characterized in that the negative pole of the pulse power supply and the upper conducting block (D)1) A first relay (K) is additionally arranged between the first relay and the second relay1) At the negative pole of the pulse power supply and the lower conductive block (D)2) A second relay (K) is additionally arranged between the first relay and the second relay2) The upper conductive block (D)1) Lower conductive block (D)2) Respectively connected with electrode wire, the positive electrode of pulse power supply is directly connected with workpiece, and the upper computer controls the first relay (K)1) And a second relay (K)2) Make the upper conductive block (D)1) Lower conductive block (D)2) And the corresponding electrode wires are alternately added into the circuit;
the first relay (K)1) Using a single-pole single-throw normally open type signal relay, a second relay (K)2) When a single-pole single-throw normally closed signal relay is used, a conductive block conductive loop at the wire feeding end is formed, and when a wire electrode is fed, the conductive block close to the wire feeding end and the wire electrode are connected to the circuit to work;the energy transmission process of the conductive loop of the conductive block at the wire inlet end is as follows:
when the wire electrode direction is switched from top to bottom, the wire electrode direction signal sent by the upper computer is high level, so that the first relay (K)1) Contact closed, second relay (K)2) The contact point is disconnected, and the upper conductive block (D) is connected1) Conductive, lower conductive block (D)2) Non-conducting, current flows into the workpiece from the positive pole of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, and flows into the upper conductive block (D) along the wire electrode1) Finally, the working fluid flows to the negative electrode of the pulse power supply, and the working fluid is sprayed into the machining gap from the wire inlet end, namely the working fluid is sprayed from top to bottom;
when the wire moving direction of the wire electrode is switched from bottom to top, a wire electrode moving direction signal sent by the upper computer is at a low level, so that the first relay (K) is connected with the first relay1) Contact break, second relay (K)2) Contact is closed, at this time, the upper conductive block (D)1) Non-conductive, lower conductive block (D)2) The current flows into the workpiece from the positive pole of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, and flows into the lower conductive block (D) along the wire electrode2) And finally, the working fluid flows to the cathode of the pulse power supply, and the working fluid is sprayed into the machining gap from the wire inlet end, namely from bottom to top.
2. The circuit of claim 1, wherein the host computer generates a signal for controlling the direction of wire feeding, the direction of wire feeding is high when the wire is fed from top to bottom, and is low when the wire is fed from bottom to top, and the signal is connected to a first relay (K)1) A second relay (K)2) Controlling the first relay (K)1) And a second relay (K)2) Make the upper conductive block (D)1) Lower conductive block (D)2) An interleaving circuit.
3. The reciprocating filature of claim 1The pulse power supply energy transmission loop in the spark wire cutting machining is characterized in that the first relay (K)1) Using a single-pole single-throw normally closed signal relay, a second relay (K)2) When the single-pole single-throw normally open type signal relay is used, a conductive block conductive loop at the wire outlet end is formed, and when the wire electrode is in wire feeding, the conductive block close to the wire outlet end and the wire electrode are connected into the circuit to work.
4. The pulse power supply energy transmission circuit in the reciprocating wire-cut electric discharge machining according to claim 3, wherein the energy transmission process of the conductive block conductive circuit at the wire outlet end is as follows:
when the wire electrode is in the wire moving direction from top to bottom, the wire electrode moving direction signal sent by the upper computer is at high level, so that the first relay (K)1) Contact break, second relay (K)2) The contact is closed, at which time the upper conductive block (D)1) Non-conductive, lower conductive block (D)2) The current flows into the workpiece from the positive electrode of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, and flows into the lower conductive block (D) along the wire electrode2) Finally, the working fluid flows to the negative electrode of the pulse power supply, and the working fluid is sprayed into the machining gap from the wire inlet end, namely the working fluid is sprayed from top to bottom;
when the wire electrode wire is moved from bottom to top, the wire electrode wire moving direction signal sent by the upper computer is at low level, so that the first relay (K) is connected with the first relay1) Contact closed, second relay (K)2) The contact point is disconnected, and the upper conductive block (D) is connected1) Conductive, lower conductive block (D)2) Non-conducting, the current flows into the workpiece from the positive pole of the pulse power supply, passes through a certain discharge point in the discharge gap, is transmitted to the wire electrode, and flows into the upper conductive block (D) along the wire electrode1) And finally, the working fluid flows to the negative electrode of the pulse power supply, and the working fluid is sprayed into the machining gap from the wire inlet end, namely the working fluid is sprayed from bottom to top.
5. The reciprocating wire electric discharge wire cutting machining pulse power supply energy transmission circuit according to claim 1, wherein the pulse power supply is an AC/DC pulse power supply, a DC/DC pulse power supply, an AC/AC bipolar pulse power supply or a DC/AC bipolar pulse power supply and is used for outputting one or more current waveforms of triangular waves, sawtooth waves, rectangular waves and step waves.
6. The pulse power supply energy transmission circuit in the reciprocating wire-cut electric discharge machining according to claim 1, wherein the electrode wire is a molybdenum wire with a radius of 0.09 mm.
7. A reciprocating wire electric discharge wire cutting method characterized by performing reciprocating wire electric discharge wire cutting based on the pulse power supply energy transmission circuit according to any one of claims 1 to 6.
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| JP3664879B2 (en) * | 1998-06-10 | 2005-06-29 | 株式会社ソディック | Electric discharge machining method and electric discharge machining apparatus |
| CN200966036Y (en) * | 2006-07-13 | 2007-10-24 | 温州市鹿城丰华数控设备有限公司 | Wire-cut double circuit pulse power supply |
| CN100571951C (en) * | 2008-08-15 | 2009-12-23 | 南京航空航天大学 | Based on the unidirectional low-speed wire cutting wire electric discharge machine method of HSWEDM with the pulse power |
| CN201579508U (en) * | 2009-12-24 | 2010-09-15 | 古海广 | Wire cutting device |
| TWI446981B (en) * | 2011-01-06 | 2014-08-01 | Univ Nat Taiwan | System and method for detecting electric-discharge points of a line-cutting electric-discharge processing machine |
| CN102166676A (en) * | 2011-05-23 | 2011-08-31 | 哈尔滨工业大学 | Method and device for machining insulating ceramic by reciprocating wire-cut electrical discharge machining |
| CN104308297A (en) * | 2014-10-29 | 2015-01-28 | 苏州市宝玛数控设备有限公司 | High-speed wire cut electrical discharge machining mechanism |
| CN105834000A (en) * | 2016-06-21 | 2016-08-10 | 浙江连成环保科技有限公司 | High-voltage pulse power supply with high energy efficiency ratio |
| CN107037340B (en) * | 2017-05-24 | 2019-10-22 | 哈尔滨理工大学 | A kind of to-and-fro thread feed electric spark wire-electrode cutting machine discharge position acquisition system |
| CN208408801U (en) * | 2018-04-28 | 2019-01-22 | 南通伊阳精密机械有限公司 | A kind of new and effective wire cutter pulse electric source |
| CN110026632B (en) * | 2019-05-21 | 2020-12-01 | 南京工程学院 | Telescopic wire cut Electrical Discharge Machining (EDM) wire feeding module and control system and control method thereof |
| CN111277138B (en) * | 2019-12-31 | 2022-08-16 | 南京理工大学 | Medium-speed wire cutting pulse power supply for processing waist drum problem and processing method thereof |
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