Water circulation system and control method for electric spark hole machine

Abstract

The present invention provides a water circulation system and control method for an electric spark small hole machine. The system includes: a workbench, a nozzle, an electrode, a clean water tank, and a sewage tank; the nozzle and the electrode are respectively arranged corresponding to the workbench; the clean water tank is connected to the nozzle and the electrode respectively via pipelines; the workbench is connected to the sewage tank via pipelines; wherein the medium transported by the clean water tank to the nozzle is used for electric spark discharge machining, and the electro-erosion products are discharged into the sewage tank; the medium transported by the clean water tank to the electrode is used to discharge the electro-erosion products into the sewage tank. The water circulation system and control method for an electric spark small hole machine provided by the present invention realizes the circulation, purification, and reuse of the medium required for electric spark machining during electric spark machining by constructing a water circulation path consisting of a sewage tank, a clean water tank, and a workbench.

Description

Technical Field

[0001] The present invention relates to the technical field of processing equipment, and in particular to a water circulation system and a control method for an electric spark hole machine. Background Art

[0002] The principle of EDM is that the tool electrode is connected to one pole of a pulse power supply, the workpiece to the other, and a liquid medium is placed between the two electrodes. An automatic discharge gap control system controls the movement of the tool electrode toward the workpiece. When the two electrodes reach a certain distance, the liquid medium between the electrodes breaks down, causing a pulse discharge and etching away the workpiece. However, in the field of EDM small-hole machining, due to the small aperture, the electro-erosion products after the pulse discharge are difficult to remove, resulting in arcing during the subsequent discharge process, which affects the subsequent machining effect. Summary of the Invention

[0003] The present invention provides a water circulation system for an electrospark small hole machine, which is used to solve the defect in existing electrospark small hole processing that the electro-erosion products after pulse discharge are difficult to be removed, thereby affecting the subsequent processing effect. By building a water circulation passage consisting of a sewage tank, a clean water tank and a workbench, the circulation purification and reuse of the medium required for electrospark processing during the electrospark discharge processing is realized.

[0004] The invention also provides a control method for the water circulation system of the electric spark hole machine.

[0005] According to a first aspect of the present invention, a water circulation system for an electric spark hole machine is provided, comprising: a workbench, a nozzle, an electrode, a clean water tank and a sewage tank;

[0006] The nozzle and the electrode are respectively arranged corresponding to the workbench;

[0007] The clean water tank is connected to the nozzle and the electrode respectively through pipelines;

[0008] The workbench is connected to the sewage tank via a pipeline;

[0009] The medium delivered by the clean water tank to the nozzle is used for electrospark machining, and the electro-erosion products are discharged to the sewage tank;

[0010] The medium transported by the clean water tank to the electrodes is used to discharge the electro-corrosion products into the sewage tank.

[0011] According to one embodiment of the present invention, the further comprising: a first sensor and a second sensor;

[0012] The first sensor is connected to the clean water tank and is set corresponding to the lower limit of the liquid level of the clean water tank;

[0013] The second sensor is connected to the clean water tank and is set corresponding to the upper limit of the liquid level of the clean water tank.

[0014] Specifically, this embodiment provides an implementation of a first sensor and a second sensor. By setting the first sensor and the second sensor, the liquid level in the clean water tank is measured, and the start and pause of the medium replenishment from the sewage tank is achieved according to different liquid levels.

[0015] According to an embodiment of the present invention, the system further comprises: a third sensor connected to the sewage tank and arranged corresponding to the lower limit of the liquid level of the sewage tank.

[0016] Specifically, this embodiment provides an implementation of a third sensor. By providing the third sensor, the liquid level in the sewage tank is measured, and a corresponding circulation strategy is generated based on the measurement of the liquid level in the sewage tank.

[0017] According to one embodiment of the present invention, the invention further comprises: a first conductivity unit and a second conductivity unit;

[0018] The first conductivity unit is connected to the clean water tank to detect the conductivity of the medium in the clean water tank;

[0019] The second conductivity unit is connected to the sewage tank to detect the conductivity of the medium in the sewage tank.

[0020] Specifically, this embodiment provides an implementation of a first conductivity unit and a second conductivity unit. By setting the first conductivity unit and the second conductivity unit, the conductivity in the clean water tank and the sewage tank can be measured respectively, and the corresponding circulation strategy is executed according to the measurement.

[0021] According to one embodiment of the present invention, the system further comprises: a first filter, which is arranged between the clean water tank and the sewage tank to purify the medium flowing from the sewage tank to the clean water tank.

[0022] Specifically, this embodiment provides an implementation of a first filter. By providing the first filter, the medium flowing from the sewage tank to the clean water tank is purified.

[0023] According to one embodiment of the present invention, the invention further comprises: a circulation pump and a second filter;

[0024] The circulating pump is arranged in the sewage tank and connected to the clean water tank through a pipeline to transport the medium in the sewage tank to the clean water tank;

[0025] The second filter is provided on the upstream side of the circulation pump.

[0026] Specifically, this embodiment provides an implementation of a circulation pump and a second filter. By setting up a circulation pump, it is possible to provide power for the medium in the sewage tank to flow to the clean water tank. At the same time, a second filter is set on the upstream side of the circulation pump, so that the medium flowing from the sewage tank to the clean water tank can be preliminarily filtered through the second filter.

[0027] According to one embodiment of the present invention, the invention further comprises: a flushing pump, a pressure intensifier and a pressure gauge;

[0028] The flushing pump is arranged in the clean water tank and is connected to the nozzle and the electrode respectively through pipelines;

[0029] The booster is provided on the pipeline through which the flushing pump delivers the medium to the nozzle and the electrode, so as to increase the pressure of the medium;

[0030] The pressure gauge is arranged on the pipeline through which the flushing pump transports the medium to the nozzle and the electrode, so as to display the pressure of the medium in the pipeline.

[0031] Specifically, this embodiment provides an implementation of a flushing pump, a booster, and a pressure gauge. By providing the flushing pump, it is possible to provide power for the medium in the clean water tank to flow toward the nozzle and the electrode.

[0032] Furthermore, the intensifier provides secondary pressurization for the medium delivered by the flushing pump, ensuring that the medium can obtain sufficient pressure at the nozzle and electrode.

[0033] Furthermore, the setting of the pressure gauge enables the pressure of the medium to be monitored visually.

[0034] According to a second aspect of the present invention, a method for controlling a water circulation system for an electric spark hole machine is provided, the method comprising:

[0035] In response to the start signal, the clean water tank provides the medium to the nozzle and the electrode;

[0036] The medium sprayed by the nozzle and electrode removes the erosion products generated during EDM into the sewage tank;

[0037] obtaining a liquid level parameter of the clean water tank, performing a judgment based on the liquid level parameter, and generating a first cycle decision based on the judgment result, wherein the first cycle decision is used to provide a medium to the nozzle and the electrode;

[0038] If it is determined that the liquid level of the clean water tank is lower than the lower limit of the liquid level, the medium is replenished into the clean water tank through the sewage tank;

[0039] If it is determined that the liquid level of the clean water tank is higher than the upper liquid level limit, the replenishment of the medium from the sewage tank to the clean water tank is stopped.

[0040] According to one embodiment of the present invention, after the steps of obtaining the liquid level parameters of the clean water tank, making a judgment based on the liquid level parameters, and generating a first cycle decision based on the judgment result, the method further includes:

[0041] Obtaining a first eigenvector, where the first eigenvector points to the conductivity of the medium in the clean water tank;

[0042] Obtaining a second eigenvector, where the second eigenvector points to the conductivity of the medium in the sewage tank;

[0043] Obtaining a third eigenvector, wherein the third eigenvector points to a flow parameter of a medium provided by the clean water tank to the nozzle and the electrode respectively;

[0044] A second loop decision is generated according to the first eigenvector, the second eigenvector, and the third eigenvector, wherein the second loop decision is used to add a medium into the clean water tank.

[0045] Specifically, this embodiment provides an implementation method for generating a first cycle decision based on the judgment result, and generating a second cycle decision based on the conductivity in the clean water tank, the conductivity in the sewage tank, and the flow parameters of the medium provided by the clean water tank, thereby realizing the monitoring of the conductivity in the clean water tank and the sewage tank, and adding the corresponding medium according to the flow parameters flowing out of the clean water tank per unit time.

[0046] In a possible implementation manner, the medium added to the clean water tank is pure medium added from an external pipeline.

[0047] According to an embodiment of the present invention, the step of generating a second loop decision according to the first feature vector, the second feature vector, and the third feature vector specifically includes:

[0048] Obtaining a conductivity deviation rate between the first eigenvector and the second eigenvector;

[0049] Obtaining a supplementary flow parameter of the medium supplied from the sewage tank to the clean water tank per unit time;

[0050] Obtaining, according to the third eigenvector, the circulating medium flow rate of the clean water tank providing the medium to the nozzle and the electrode respectively per unit time;

[0051] The second circulation decision is generated according to the conductivity deviation rate, the supplementary flow parameter, and the circulating medium flow rate.

[0052] Specifically, this embodiment provides an implementation method for generating a second circulation decision, wherein the second circulation decision is generated according to the conductivity deviation rate, the supplementary flow parameter, and the circulation medium flow rate.

[0053] It should be noted that by obtaining the flow parameters of the medium added from the sewage tank to the clean water tank, the strategy for adding the medium into the clean water tank is made more accurate, ensuring circulation and reuse while avoiding energy waste.

[0054] The above-mentioned one or more technical solutions in the present invention have at least one of the following technical effects: The present invention provides a water circulation system and control method for an electrospark small-hole machine, which realizes the circulation, purification and reuse of the medium required for electrospark machining during electrospark discharge machining by building a water circulation passage consisting of a sewage tank, a clean water tank and a workbench.

[0055] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0057] Figure 1 This is a schematic diagram of the arrangement of the water circulation system for the electric spark hole machine provided by the present invention;

[0058] Figure 2 The present invention is a flow chart of a method for controlling a water circulation system of an electric spark hole machine.

[0059] Reference numerals:

[0060] 10. Workbench;

[0061] 20. Nozzle;

[0062] 30. Electrode;

[0063] 40. Clean water tank; 41. First sensor; 42. Second sensor; 43. First conductivity unit; 44. Flushing pump; 45. Booster; 46. Pressure gauge;

[0064] 50. Sewage tank; 51. Third sensor; 52. Second conductivity unit; 53. Circulation pump; 54. Second filter;

[0065] 60. First filter. DETAILED DESCRIPTION

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0067] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0068] In some specific embodiments of the present invention, Figure 1 As shown, the present invention provides a water circulation system for an electric spark small hole machine, comprising: a workbench 10, a nozzle 20, an electrode 30, a clean water tank 40 and a sewage tank 50; the nozzle 20 and the electrode 30 are respectively arranged corresponding to the workbench 10; the clean water tank 40 is connected to the nozzle 20 and the electrode 30 respectively through pipelines; the workbench 10 is connected to the sewage tank 50 through pipelines; wherein, the medium transported by the clean water tank 40 to the nozzle 20 is used for electric spark discharge machining, and the electro-erosion products are discharged to the sewage tank 50; the medium transported by the clean water tank 40 to the electrode 30 is used to discharge the electro-erosion products to the sewage tank 50.

[0069] In detail, the present invention provides a water circulation system for an electrospark small hole machine, which is used to solve the defect in existing electrospark small hole processing that the electro-erosion products after pulse discharge are difficult to remove, thereby affecting the subsequent processing effect. By building a water circulation passage consisting of a sewage tank 50, a clean water tank 40 and a workbench 10, the circulation purification and reuse of the medium required for electrospark processing is realized during the electrospark discharge processing.

[0070] It should be noted that the clean water tank 40 is connected to the nozzle 20 and the electrode 30 through pipelines, which on the one hand realizes the demand for medium in the process of electrospark discharge machining, and on the other hand, the medium sprayed by the nozzle 20 discharges the electro-erosion products to the sewage tank 50, and the sewage tank 50 transports the purified medium to the clean water tank 40, realizing circulation purification and reuse.

[0071] In some possible embodiments of the present invention, it also includes: a first sensor 41 and a second sensor 42; the first sensor 41 is connected to the clean water tank 40 and is set corresponding to the lower limit of the liquid level of the clean water tank 40; the second sensor 42 is connected to the clean water tank 40 and is set corresponding to the upper limit of the liquid level of the clean water tank 40.

[0072] Specifically, this embodiment provides an implementation of a first sensor 41 and a second sensor 42. By setting the first sensor 41 and the second sensor 42, the liquid level in the clean water tank 40 is measured, and the start and pause of the medium replenishment from the sewage tank 50 is achieved according to different liquid levels.

[0073] In a possible implementation manner, when the liquid level in the clean water tank 40 is lower than the lower liquid level limit, the sewage tank 50 starts to replenish the medium into the clean water tank 40 .

[0074] In a possible implementation manner, when the liquid level in the clean water tank 40 is higher than the upper liquid level limit, the sewage tank 50 stops replenishing the medium into the clean water tank 40 .

[0075] In some possible embodiments of the present invention, the system further includes: a third sensor 51 , which is connected to the sewage tank 50 and is set corresponding to the lower limit of the liquid level of the sewage tank 50 .

[0076] Specifically, this embodiment provides an implementation of a third sensor 51 . By providing the third sensor 51 , the liquid level in the sewage tank 50 is measured, and a corresponding circulation strategy is generated based on the measurement of the liquid level in the sewage tank 50 .

[0077] In a possible implementation manner, when the liquid level in the sewage tank 50 is lower than the lower limit of the liquid level, the medium is replenished into the clean water tank 40 through the external pipeline to meet the demand of medium circulation.

[0078] In some possible embodiments of the present invention, the system further includes: a first conductivity unit 43 and a second conductivity unit 52; the first conductivity unit 43 is connected to the clean water tank 40 to detect the conductivity of the medium in the clean water tank 40; the second conductivity unit 52 is connected to the sewage tank 50 to detect the conductivity of the medium in the sewage tank 50.

[0079] Specifically, this embodiment provides an implementation of a first conductivity unit 43 and a second conductivity unit 52. By setting the first conductivity unit 43 and the second conductivity unit 52, the conductivity in the clean water tank 40 and the sewage tank 50 are measured respectively, and the corresponding circulation strategy is executed according to the measurement.

[0080] In a possible embodiment, it further includes: an alarm unit, the first conductivity unit 43 and the second conductivity unit 52 are respectively connected to the alarm unit, and when the conductivity in the clean water tank 40 and / or the sewage tank 50 exceeds a preset threshold, the alarm unit is triggered to sound an alarm.

[0081] In some possible embodiments of the present invention, the first filter 60 is further included. The first filter 60 is disposed between the clean water tank 40 and the sewage tank 50 to purify the medium flowing from the sewage tank 50 to the clean water tank 40 .

[0082] Specifically, this embodiment provides an implementation of a first filter 60 . By providing the first filter 60 , the medium flowing from the sewage tank 50 to the clean water tank 40 is purified.

[0083] In some possible embodiments of the present invention, the system further includes: a circulation pump 53 and a second filter 54; the circulation pump 53 is disposed in the sewage tank 50 and is connected to the clean water tank 40 through a pipeline to transport the medium in the sewage tank 50 to the clean water tank 40; the second filter 54 is disposed on the upstream side of the circulation pump 53.

[0084] Specifically, this embodiment provides an implementation of a circulation pump 53 and a second filter 54. By providing the circulation pump 53, it is possible to provide power for the medium in the sewage tank 50 to flow to the clean water tank 40. At the same time, a second filter 54 is provided on the upstream side of the circulation pump 53, so that the medium flowing from the sewage tank 50 to the clean water tank 40 can be preliminarily filtered through the second filter 54.

[0085] In some possible embodiments of the present invention, the present invention further includes: a flushing pump 44, a booster 45 and a pressure gauge 46; the flushing pump 44 is arranged in the clean water tank 40 and is connected to the nozzle 20 and the electrode 30 through pipelines respectively; the booster 45 is arranged on the pipeline through which the flushing pump 44 transports the medium to the nozzle 20 and the electrode 30 to achieve pressurization of the medium; the pressure gauge 46 is arranged on the pipeline through which the flushing pump 44 transports the medium to the nozzle 20 and the electrode 30 to display the pressure of the medium in the pipeline.

[0086] Specifically, this embodiment provides an implementation of a flushing pump 44 , a booster 45 and a pressure gauge 46 . By providing the flushing pump 44 , power is provided for the medium in the clean water tank 40 to flow toward the nozzle 20 and the electrode 30 .

[0087] Furthermore, the booster 45 provides secondary pressurization for the medium delivered by the flushing pump 44 , ensuring that the medium can obtain sufficient pressure at the nozzle 20 and the electrode 30 .

[0088] Furthermore, the provision of the pressure gauge 46 enables the pressure of the medium to be visually monitored.

[0089] In some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, this solution provides a control method for the water circulation system of the above-mentioned electric spark hole machine, the method comprising:

[0090] In response to the start signal, the clean water tank 40 provides the medium to the nozzle 20 and the electrode 30;

[0091] The medium sprayed by the nozzle 20 and the electrode 30 discharges the electro-erosion products generated during the electro-spark discharge machining into the sewage tank 50;

[0092] Obtaining liquid level parameters of the clean water tank 40, making a judgment based on the liquid level parameters, and generating a first cycle decision based on the judgment result, wherein the first cycle decision is used to provide a medium to the nozzle 20 and the electrode 30;

[0093] If the liquid level of the clean water tank 40 is determined to be lower than the lower limit, the medium is added to the clean water tank 40 through the sewage tank 50;

[0094] If it is determined that the liquid level of the clean water tank 40 is higher than the upper liquid level limit, the replenishment of the medium from the sewage tank 50 to the clean water tank 40 is stopped.

[0095] In some possible embodiments of the present invention, after the steps of obtaining the liquid level parameters of the clean water tank 40, making a judgment based on the liquid level parameters, and generating a first cycle decision based on the judgment result, the following steps are specifically included:

[0096] Obtaining a first eigenvector, the first eigenvector pointing to the conductivity of the medium in the clean water tank 40;

[0097] Obtaining a second eigenvector, where the second eigenvector points to the conductivity of the medium in the sewage tank 50;

[0098] Obtaining a third eigenvector, the third eigenvector pointing to the flow parameters of the medium provided by the clean water tank 40 to the nozzle 20 and the electrode 30 respectively;

[0099] A second loop decision is generated according to the first eigenvector, the second eigenvector, and the third eigenvector, wherein the second loop decision is used to add a medium into the clean water tank 40 .

[0100] Specifically, this embodiment provides an implementation method for generating a first cycle decision based on the judgment result, and generating a second cycle decision based on the conductivity in the clean water tank 40, the conductivity in the sewage tank 50 and the flow parameters of the medium provided by the clean water tank 40, thereby realizing the monitoring of the conductivity in the clean water tank 40 and the sewage tank 50, and adding the corresponding medium according to the flow parameters flowing out of the clean water tank 40 per unit time.

[0101] In a possible implementation manner, the medium added to the clean water tank 40 is pure medium added from an external pipeline.

[0102] In some possible embodiments of the present invention, the step of generating a second loop decision according to the first eigenvector, the second eigenvector, and the third eigenvector specifically includes:

[0103] obtaining a conductivity deviation rate between the first eigenvector and the second eigenvector;

[0104] Obtaining the replenishment flow parameter of the medium replenished from the sewage tank 50 to the clean water tank 40 per unit time;

[0105] Obtain the circulating medium flow rate of the medium provided by the clean water tank 40 to the nozzle 20 and the electrode 30 respectively per unit time according to the third eigenvector;

[0106] A second circulation decision is generated based on the conductivity deviation rate, the supplementary flow parameter, and the circulation medium flow rate.

[0107] Specifically, this embodiment provides an implementation method for generating a second circulation decision, wherein the second circulation decision is generated according to the conductivity deviation rate, the supplementary flow parameter, and the circulation medium flow rate.

[0108] It should be noted that by obtaining the flow parameters of the medium added from the sewage tank 50 to the clean water tank 40, the strategy for adding the medium into the clean water tank 40 is made more accurate, ensuring circulation and reuse while avoiding energy waste.

[0109] In a possible implementation manner, a fourth sensor is further provided, and the fourth sensor is used to measure the flow rate of the circulating medium provided by the clean water tank 40 to the nozzle 20 and the electrode 30 respectively.

[0110] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0111] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or modes and features of different embodiments or modes described in this specification without contradiction.

[0112] Finally, it should be noted that the above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A control method for a water circulation system of an electric spark hole machine, characterized in that: The system comprises: a workbench (10), a nozzle (20), an electrode (30), a clean water tank (40) and a sewage tank (50); The nozzle (20) and the electrode (30) are respectively arranged corresponding to the workbench (10); the clean water tank (40) is respectively connected to the nozzle (20) and the electrode (30) through pipelines; the workbench (10) is connected to the sewage tank (50) through pipelines; The medium transported by the clean water tank (40) to the nozzle (20) is used for electric spark discharge machining, and the electro-erosion products are discharged into the sewage tank (50); the medium transported by the clean water tank (40) to the electrode (30) is used to discharge the electro-erosion products into the sewage tank (50); It also includes: a first conductivity unit (43) and a second conductivity unit (52); The first conductivity unit (43) is connected to the clean water tank (40) to detect the conductivity of the medium in the clean water tank (40); The second conductivity unit (52) is connected to the sewage tank (50) to detect the conductivity of the medium in the sewage tank (50); It also includes: an alarm unit, wherein the first conductivity unit (43) and the second conductivity unit (52) are respectively connected to the alarm unit, and when the conductivity in the clean water tank (40) and / or the sewage tank (50) exceeds a preset threshold, the alarm unit is triggered to sound an alarm; The method comprises: Obtaining a first eigenvector, the first eigenvector pointing to the conductivity of the medium in the clean water tank (40); Obtaining a second eigenvector, the second eigenvector pointing to the conductivity of the medium in the sewage tank (50); Obtaining a third eigenvector, the third eigenvector pointing to the clean water tank (40) providing flow parameters of the medium to the nozzle (20) and the electrode (30) respectively; generating a second loop decision according to the first eigenvector, the second eigenvector, and the third eigenvector, wherein the second loop decision is used to add a medium into the clean water tank (40); The step of generating a second loop decision according to the first eigenvector, the second eigenvector, and the third eigenvector specifically includes: Obtaining a conductivity deviation rate between the first eigenvector and the second eigenvector; Obtaining a supplementary flow parameter of the medium supplied from the sewage tank (50) to the clean water tank (40) per unit time; Obtaining, according to the third eigenvector, the circulating medium flow rate of the medium provided by the clean water tank (40) to the nozzle (20) and the electrode (30) per unit time; The second circulation decision is generated according to the conductivity deviation rate, the supplementary flow parameter, and the circulating medium flow rate.

2. The control method for the water circulation system of the electric spark hole machine according to claim 1, characterized in that: The system further comprises: a first sensor (41) and a second sensor (42); The first sensor (41) is connected to the clean water tank (40) and is set corresponding to the lower limit of the liquid level of the clean water tank (40); The second sensor (42) is connected to the clean water tank (40) and is set corresponding to the upper limit of the liquid level of the clean water tank (40).

3. The control method for the water circulation system of the electric spark hole machine according to claim 1, characterized in that: The system further comprises a third sensor (51), the third sensor (51) being connected to the sewage tank (50) and being set corresponding to the lower limit of the liquid level of the sewage tank (50).

4. The method for controlling a water circulation system for an electric spark hole machine according to any one of claims 1 to 3, characterized in that: The system further comprises a first filter (60), the first filter (60) being arranged between the clean water tank (40) and the sewage tank (50) to purify the medium flowing from the sewage tank (50) to the clean water tank (40).

5. The control method for the water circulation system of the electric spark hole machine according to claim 4, characterized in that: The system further comprises: a circulation pump (53) and a second filter (54); The circulation pump (53) is arranged in the sewage tank (50) and is connected to the clean water tank (40) through a pipeline to transport the medium in the sewage tank (50) into the clean water tank (40); The second filter (54) is arranged on the upstream side of the circulation pump (53).

6. The method for controlling a water circulation system for an electric spark hole machine according to any one of claims 1 to 3, characterized in that: The system further comprises: a flushing pump (44), a pressure booster (45) and a pressure gauge (46); The flushing pump (44) is disposed in the clean water tank (40) and is connected to the nozzle (20) and the electrode (30) through pipelines. The booster (45) is arranged on a pipeline for the flushing pump (44) to transport the medium to the nozzle (20) and the electrode (30), so as to increase the pressure of the medium; The pressure gauge (46) is provided on a pipeline for the flushing pump (44) to transport the medium to the nozzle (20) and the electrode (30), so as to display the pressure of the medium in the pipeline.

7. The control method for the water circulation system of the electric spark hole machine according to claim 5, characterized in that: include: In response to a start signal, the clean water tank (40) provides a medium to the nozzle (20) and the electrode (30); The medium sprayed by the nozzle (20) and the electrode (30) discharges the electro-erosion products generated during the electric spark discharge machining into the sewage tank (50); Obtaining a liquid level parameter of the clean water tank (40), performing a judgment based on the liquid level parameter, and generating a first cycle decision based on the judgment result, wherein the first cycle decision is used to provide a medium to the nozzle (20) and the electrode (30); When it is determined that the liquid level of the clean water tank (40) is lower than the lower limit of the liquid level, the medium is replenished into the clean water tank (40) through the sewage tank (50); When it is determined that the liquid level of the clean water tank (40) is higher than the upper limit of the liquid level, the replenishment of the medium from the sewage tank (50) to the clean water tank (40) is stopped.

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