Method and device for regulating discharge localization in electrochemical discharge regrinding

Abstract

The application relates to a method and device for regulating and controlling discharge localization in electrochemical discharge composite grinding, wherein the method comprises the following steps: based on a current machining task, the distribution characteristics of a current machining area on the surface of a target machining workpiece in an electrochemical discharge composite grinding machining process are acquired to determine a target discharge position and a target liquid film distribution; based on the target liquid film distribution, the rotating direction of a grinding wheel is determined, and a layout scheme of a nozzle is determined based on a preset airflow constraint; an electrochemical discharge composite grinding machining pre-experiment of the target machining workpiece is performed, an experimental result is obtained, and a process parameter range meeting a preset constraint condition is obtained by using the experimental result; the working parameters of the grinding wheel and the nozzle under the current area spatial distribution characteristics are respectively adjusted, the electrochemical discharge position is constrained to the unprocessed surface of the target workpiece, and the current machining task is completed. Therefore, the technical problem that in the related art, the applicable machining conditions are limited, the cost is high, it is difficult to reliably and effectively constrain the discharge localization, and the quality of the electrochemical discharge composite grinding machining is affected is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of special processing, in particular to a method and device for regulating and controlling discharge localization in electrochemical discharge grinding. BACKGROUND

[0002] Electrochemical discharge machining is a special processing method relying on thermal melting and chemical reaction to remove materials. In order to solve the problem that when electrochemical discharge machining is applied to macro-size machining, the processing efficiency is too low if the discharge energy is too small, and the heat-affected zone is caused if the discharge energy is too large, the discharge high temperature of the electrochemical discharge process can be used to soften the insulating hard and brittle material, and then the softened insulating hard and brittle material is expected to be removed by abrasive particles to complete efficient and non-damaging material processing. In actual application, if the grinding wheel or the workpiece itself has a curved surface feature, there will always be a gradually changing machining gap in the machining area. When the machining gap is filled with electrolyte, the contact area between the cathode and the electrolyte will form an electrolysis loop, and the electrolysis will produce bubbles to form a gas film to break down and cause electrochemical discharge. The whole machining gap will become a potential area for electrochemical discharge. A large range of electrochemical discharge near the machining area will not only consume a large amount of stray discharge energy and reduce the stability of the discharge, but also cause part of the electrochemical discharge to act on the machined surface, resulting in deterioration of the machined surface quality. Therefore, in the process of electrochemical discharge grinding, it is necessary to constrain the discharge to occur in the unprocessed area to reduce stray discharge and improve the stability of the discharge.

[0003] In related technologies, the methods for constraining discharge localization to improve the localization of discharge mainly include: (1) ceramic sleeve side wall insulated electrode: a ceramic micro tube is sleeved on the tool electrode to avoid side wall discharge. This method is simple to operate, but the ceramic micro tube is easy to break in electrochemical discharge grinding; (2) diamond-coated side wall insulated electrode: a micron-level diamond insulation film is coated on the electrode side wall to avoid electrode side wall discharge. This method is suitable for various shapes of microelectrodes, but the cost is high, and the insulation layer is easy to fail in electrochemical discharge grinding; (3) changing the electrode structure: the end of the tool electrode is processed into a multi-petal multi-angled structure to constrain the discharge to concentrate on the end by using the tip discharge characteristics. This method is suitable for electrochemical discharge end machining of small holes, but when it is applied to electrochemical discharge grinding, the multi-angled structure on the tool electrode will destroy the grinding effect and affect the composite process effect because the tool electrode also serves as a grinding wheel for mechanical grinding removal.

[0004] In summary, in related technologies, the applicable machining conditions are limited, the cost is high, and it is difficult to reliably and effectively constrain the discharge localization, which affects the quality of electrochemical discharge grinding, and needs to be improved. SUMMARY

[0005] The application provides a method and device for controlling discharge localization in electrochemical discharge composite grinding, to solve the technical problem in the prior art that the applicable processing conditions are limited, the cost is high, and it is difficult to reliably and effectively constrain discharge localization, thereby affecting the quality of electrochemical discharge composite grinding processing.

[0006] The first aspect of the application provides a method for controlling discharge localization in electrochemical discharge composite grinding, comprising the following steps: based on a current processing task, obtaining the current processing area distribution characteristics of the workpiece surface of a target processing workpiece in the electrochemical discharge composite grinding processing process, to determine the target discharge position and the target liquid film distribution based on the current processing area distribution characteristics; based on the target liquid film distribution, determining the rotation direction of the grinding wheel, and determining the layout scheme of the nozzle based on a preset airflow constraint; based on the layout scheme and the rotation direction, performing a pre-experiment of electrochemical discharge composite grinding processing of the target processing workpiece, obtaining an experimental result, and using the experimental result to obtain a process parameter range that meets a preset constraint condition; based on the process parameter range, adjusting the working parameters of the grinding wheel and the nozzle under the current area spatial distribution characteristics, to constrain the electrochemical discharge position to the unprocessed surface of the target workpiece based on the working parameters, until the current processing task is completed.

[0007] Optionally, in an embodiment of the application, based on the current processing task, the current processing area distribution characteristics of the workpiece surface of a target processing workpiece in the electrochemical discharge composite grinding processing process are obtained, to determine the target discharge position and the target liquid film distribution based on the current processing area distribution characteristics, which comprises: obtaining the feed direction of the grinding wheel in the electrochemical discharge composite grinding processing process, to obtain the spatial position of the processed area and the spatial position of the unprocessed area in the current processing area distribution characteristics; taking the processing gap formed between the grinding wheel and the unprocessed area as the target discharge position, and determining the target liquid film distribution based on the target discharge position.

[0008] Optionally, in an embodiment of the application, based on the target liquid film distribution, the rotation direction of the grinding wheel is determined, which comprises: determining the rotation direction in combination with the target liquid film distribution and the current processing area distribution characteristics, to extrude the electrolyte in the processing gap from the processed area to the unprocessed area when the grinding wheel changes direction.

[0009] Optionally, in an embodiment of the application, based on the shape of the target liquid film distribution, the rotation direction of the grinding wheel is determined, and the layout scheme of the nozzle is determined based on a preset airflow constraint, which comprises: arranging the nozzle with the processing area of the target workpiece as the center, so that the outlet airflow of the nozzle flows from the processed area to the unprocessed area, and so that the liquid film is concentrated in the processing gap.

[0010] Optionally, in an embodiment of the present application, the electrochemical discharge composite grinding machining pre-experiment of the target machining workpiece is performed based on the layout scheme and the rotation direction, an experimental result is obtained, and a process parameter range meeting a preset constraint condition is obtained by using the experimental result, including: obtaining a spark discharge position and a discharge influence area range in the machining gap; adjusting working parameters of the nozzle and the grinding wheel based on the spark discharge position and the discharge influence area range until the electrochemical discharge is constrained in the machining gap, so as to obtain the process parameter range.

[0011] The second aspect embodiment of the present application provides a discharge localization regulation and control device in electrochemical discharge composite grinding, including: an acquisition module, configured to acquire current machining area distribution characteristics of a workpiece surface of a target machining workpiece in an electrochemical discharge composite grinding machining process based on a current machining task, so as to determine a target discharge position and a target liquid film distribution based on the current machining area distribution characteristics; a determination module, configured to determine a rotation direction of a grinding wheel based on the target liquid film distribution, and determine a layout scheme of a nozzle based on a preset airflow constraint; a pre-experiment module, configured to perform an electrochemical discharge composite grinding machining pre-experiment of the target machining workpiece based on the layout scheme and the rotation direction, obtain an experimental result, and obtain a process parameter range meeting a preset constraint condition by using the experimental result; and a regulation and control module, configured to adjust working parameters of the grinding wheel and the nozzle under the current area spatial distribution characteristics respectively based on the process parameter range, so as to constrain an electrochemical discharge occurrence position to an unprocessed surface of the target workpiece based on the working parameters, until the current machining task is completed.

[0012] Optionally, in an embodiment of the present application, the acquisition module includes: a first acquisition unit, configured to acquire a feed direction of the grinding wheel in the electrochemical discharge composite grinding machining process, so as to obtain a spatial position of a processed area and a spatial position of an unprocessed area in the current machining area distribution characteristics; and a first determination unit, configured to take a machining gap formed between the grinding wheel and the unprocessed area as the target discharge position, and determine the target liquid film distribution based on the target discharge position.

[0013] Optionally, in an embodiment of the present application, the determination module includes: a second determination unit, configured to determine the rotation direction in combination with the target liquid film distribution and the current machining area distribution characteristics, so as to extrude electrolyte in the machining gap from the processed area to the unprocessed area when the grinding wheel is turned.

[0014] Optionally, in an embodiment of the present application, the determining module comprises a setting unit configured to set the nozzle in the center of the machining area of the target workpiece, so that the outlet airflow of the nozzle flows from the machined area to the unprocessed area, and so that the liquid film is concentrated in the machining gap.

[0015] Optionally, in an embodiment of the present application, the pre-experiment module comprises a second acquisition unit configured to acquire the spark discharge position and the discharge influence area range in the machining gap; and an adjustment unit configured to adjust the working parameters of the nozzle and the grinding wheel based on the spark discharge position and the discharge influence area range, until the electrochemical discharge is constrained in the machining gap, to obtain the process parameter range.

[0016] The third aspect embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the program to implement the method for regulating and controlling discharge localization in electrochemical discharge composite grinding as described in the above embodiments.

[0017] The fourth aspect embodiment of the present application provides a computer readable storage medium, which stores computer instructions for causing the computer to execute the method for regulating and controlling discharge localization in electrochemical discharge composite grinding as described in the above embodiments.

[0018] The fifth aspect embodiment of the present application provides a computer program product comprising a computer program, which, when executed, is configured to implement the method for regulating and controlling discharge localization in electrochemical discharge composite grinding as described above.

[0019] The embodiments of the present application can acquire the current machining area distribution characteristics of the surface of the target workpiece in the electrochemical discharge composite grinding process based on the current machining task, determine the target discharge position and the target liquid film distribution, determine the rotation direction of the grinding wheel, determine the layout scheme of the nozzle based on the preset airflow constraint, perform the pre-experiment of electrochemical discharge composite grinding of the target workpiece according to the rotation direction and the layout scheme, obtain the process parameter range meeting the preset constraint condition by using the experimental results, adjust the working parameters of the grinding wheel and the nozzle under the current area spatial distribution characteristics, constrain the electrochemical discharge occurrence position to the unprocessed surface of the target workpiece, adjust the liquid film distribution by using the airflow constraint and the grinding wheel rotation state to control the discharge localization, improve the discharge localization, and realize reliable and effective constraint of the discharge localization in the electrochemical discharge composite grinding process. Thus, the technical problem of the related art that the applicable machining conditions are limited, the cost is high, and it is difficult to reliably and effectively constrain the discharge localization, thereby affecting the quality of electrochemical discharge composite grinding, is solved.

[0020] Additional aspects and advantages of the present application will be in part apparent and in part expressly stated in the description that follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

[0022] Figure 1 A flow chart of a method for regulating discharge localization in electrochemical discharge composite grinding according to an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the principle of a method for regulating discharge localization in electrochemical discharge composite grinding according to an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the principle of the influence of the rotation state of a grinding wheel on electrolyte distribution according to an embodiment of the present application;

[0025] Figure 4 A structural schematic diagram of a device for regulating discharge localization in electrochemical discharge composite grinding according to an embodiment of the present application;

[0026] Figure 5 A structural schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals are used throughout the drawing figures to refer to the same or like elements or to elements with the same or similar functionality. The embodiments described below are illustrative, are intended to explain the present application and are not intended to limit the present application.

[0028] The method and device for regulating discharge localization in electrochemical discharge composite grinding of the embodiments of the present application are described below with reference to the accompanying drawings. In view of the technical problems in the related art mentioned above, i.e., limited applicable machining conditions, high cost, difficulty in reliably and effectively constraining discharge localization, and thus affecting the quality of electrochemical discharge composite grinding, the present application provides a method for regulating discharge localization in electrochemical discharge composite grinding. In the method, the current machining area distribution characteristics of the workpiece surface of a target machining workpiece in the electrochemical discharge composite grinding process can be obtained based on a current machining task, so as to determine a target discharge position and a target liquid film distribution, to determine the rotation direction of the grinding wheel, and to determine the layout scheme of the nozzle based on a preset airflow constraint. The electrochemical discharge composite grinding pre-experiment of the target machining workpiece is performed according to the rotation direction and the layout scheme, so as to obtain a process parameter range meeting the preset constraint condition by using the experimental results, to adjust the working parameters of the grinding wheel and the nozzle under the current area spatial distribution characteristics, to constrain the electrochemical discharge position to the unprocessed surface of the target workpiece, to adjust the liquid film distribution by using the airflow constraint and the grinding wheel rotation state, to control the discharge localization, to improve the discharge localization, and to reliably and effectively constrain the discharge localization to occur in the unprocessed area in the electrochemical discharge composite grinding process until the current machining task is completed. Thus, the technical problems in the related art, i.e., limited applicable machining conditions, high cost, difficulty in reliably and effectively constraining discharge localization, and thus affecting the quality of electrochemical discharge composite grinding, are solved.

[0029] Specifically, Figure 1 A flowchart of the method for regulating discharge localization in electrochemical discharge composite grinding provided by the embodiments of the present application is shown in FIG. 1.

[0030] As Figure 1 shown, the method for regulating discharge localization in electrochemical discharge composite grinding includes the following steps:

[0031] In step S101, the current machining area distribution characteristics of the workpiece surface of a target machining workpiece in the electrochemical discharge composite grinding process are obtained based on a current machining task, so as to determine a target discharge position and a target liquid film distribution based on the current machining area distribution characteristics.

[0032] It can be understood that the electrochemical discharge composite grinding processing is a composite processing method combining electrochemical discharge and mechanical grinding. In order to more reliably and effectively constrain the electrochemical discharge to occur in the unprocessed area in the electrochemical discharge composite grinding processing, the embodiment of the present application can determine the current processing area distribution characteristics of the workpiece surface of the target workpiece in the electrochemical discharge composite grinding processing according to the current processing task, that is, the distribution characteristics of the processed area, the processing area and the unprocessed area of the workpiece surface are obtained, and then the target discharge position and the target liquid film distribution are determined according to the current processing area distribution characteristics to constrain the discharge localization in the subsequent process.

[0033] Optionally, in an embodiment of the present application, based on the current processing task, the current processing area distribution characteristics of the workpiece surface of the target workpiece in the electrochemical discharge composite grinding processing are obtained to determine the target discharge position and the target liquid film distribution based on the current processing area distribution characteristics, which includes: obtaining the feed direction of the grinding wheel in the electrochemical discharge composite grinding processing to obtain the spatial position of the processed area and the spatial position of the unprocessed area in the current processing area distribution characteristics; the processing gap formed between the grinding wheel and the unprocessed area is taken as the target discharge position, and the target liquid film distribution is determined based on the target discharge position.

[0034] In actual execution process, the embodiment of the present application can determine the spatial position of the processed area and the unprocessed area of the workpiece surface of the target workpiece according to the feed direction of the grinding wheel in the electrochemical discharge composite grinding processing. In an ideal case, the electrochemical discharge should occur in the processing gap formed between the grinding wheel and the unprocessed area, so as to achieve the effect of softening by discharge, and avoid the occurrence in the processing gap formed between the grinding wheel and the processed area, which deteriorates the quality of the processed surface. The existence of the electrolyte film between the grinding wheel and the target workpiece is a prerequisite for discharge, so the ideal liquid film distribution position can be determined according to the above determined ideal discharge position (target discharge position), that is, the target liquid film distribution.

[0035] In step S102, the rotation direction of the grinding wheel is determined based on the target liquid film distribution, and the layout scheme of the nozzle is determined based on the preset airflow constraint.

[0036] Further, the embodiment of the present application can determine the liquid film shape under the ideal distribution according to the target liquid film distribution, determine the rotation direction of the grinding wheel, and determine the layout scheme of the airflow constraint nozzle, so as to adjust the liquid film distribution by using the airflow constraint and the rotation state of the grinding wheel to control the discharge localization, so as to guarantee the discharge localization in the processing process.

[0037] Optionally, in an embodiment of the present application, the rotation direction of the grinding wheel is determined based on the target liquid film distribution, including: determining the rotation direction in combination with the target liquid film distribution and the current machining area distribution characteristics, so that when the grinding wheel changes direction, the electrolyte in the machining gap is squeezed from the machined area to the unprocessed area.

[0038] In some embodiments, during the rotation of the grinding wheel, the high-speed rotation of the grinding wheel surface and the abrasive particles will squeeze the electrolyte film in the machining area to move and accumulate in the same direction. Therefore, according to the ideal liquid film distribution position, i.e. the target liquid film distribution, the grinding wheel should change direction so that the electrolyte in the machining gap between the grinding wheel and the workpiece can be squeezed from the machined area to the unprocessed area by the rotation of the grinding wheel.

[0039] Optionally, in an embodiment of the present application, the rotation direction of the grinding wheel is determined based on the shape of the target liquid film distribution, and the layout scheme of the nozzle is determined based on the preset airflow constraint, including: arranging the nozzle around the machining area of the target workpiece, so that the outlet airflow of the nozzle flows from the machined area to the unprocessed area, and the liquid film is concentrated in the machining gap.

[0040] In other embodiments, the nozzle is arranged around the machining area, so that the outlet airflow of the nozzle points from the machined area to the unprocessed area. The overall goal of the nozzle arrangement is to concentrate the liquid film as much as possible in the machining gap formed by the grinding wheel and the unprocessed area of the target workpiece, and there is no electrolyte film in the gap formed by the grinding wheel and the machined surface of the target workpiece due to the action of the airflow.

[0041] In step S103, based on the layout scheme and the rotation direction, an electrochemical discharge composite grinding machining pre-experiment of the target machining workpiece is carried out, an experimental result is obtained, and a process parameter range meeting the preset constraint condition is obtained by using the experimental result.

[0042] As a possible implementation, the embodiments of the present application can use the determined nozzle layout scheme and the rotation direction of the grinding wheel to carry out an electrochemical discharge composite grinding machining pre-experiment, so as to continuously adjust the working parameters of the nozzle and the grinding wheel according to the experimental result until the optimal process parameter range is found.

[0043] Optionally, in an embodiment of the present application, based on the layout scheme and the rotation direction, an electrochemical discharge composite grinding machining pre-experiment of the target machining workpiece is carried out, an experimental result is obtained, and a process parameter range meeting the preset constraint condition is obtained by using the experimental result, including: obtaining the spark discharge position and the discharge influence area range in the machining gap; adjusting the working parameters of the nozzle and the grinding wheel based on the spark discharge position and the discharge influence area range, until the electrochemical discharge is constrained in the machining gap, so as to obtain the process parameter range.

[0044] The optimization objective of the electrochemical discharge composite grinding pre-experiment is to obtain the preferred range of process parameters that constrain the location of electrochemical discharge to the unmachined surface of the target workpiece. The preferred parameters mainly include nozzle gas flow rate, nozzle angle, nozzle distance, nozzle outlet diameter, and grinding wheel rotation speed.

[0045] For example, the optimization steps can be: (1) Conduct an electrochemical discharge composite grinding experiment under given parameters, observe and record the position of spark discharge in the processing gap through a camera, and observe and record the range of the discharge influence area on the surface after processing; (2) Change the nozzle gas flow rate, nozzle angle, nozzle distance, nozzle outlet diameter and grinding wheel rotation speed respectively, repeat the experimental process of (1), and obtain the preferred parameter range that confines the electrochemical discharge within the gap formed between the grinding wheel and the unprocessed area of ​​the target workpiece; (3) Based on the preferred parameter range obtained in step (2), obtain the optimal parameter combination that can realize the discharge confinement in the unprocessed area.

[0046] In step S104, based on the range of process parameters, the working parameters of the grinding wheel and the nozzle are adjusted according to the spatial distribution characteristics of the current area, so as to constrain the location of electrochemical discharge to the unprocessed surface of the target workpiece based on the working parameters, until the current processing task is completed.

[0047] This application embodiment can perform electrochemical discharge composite grinding on the target workpiece of insulating material by adjusting the airflow constraint nozzle and the rotation state of the grinding wheel according to the optimized process parameters within the range of process parameters. Combined with... Figure 2 and Figure 3 As shown, an embodiment is used to illustrate in detail the working principle of the discharge localization control method in electrochemical discharge composite grinding according to the present application.

[0048] in, Figure 2 (a) in the diagram is a schematic diagram of the processing without airflow constraints. Figure 2 (b) is a schematic diagram of a process where three nozzles are arranged to constrain the distribution of the liquid film and thus control the localization of the discharge.

[0049] like Figure 2 As shown in (a) and (b), during the electrochemical discharge composite grinding process, due to the curved surface characteristics of the grinding wheel or the target workpiece, there will always be a gradually changing machining gap in the machining area. When the machining gap is filled with electrolyte, the contact area between the electrochemical discharge cathode and the electrolyte will form an electrolytic circuit, generating bubbles and thus forming a gas film that breaks down, resulting in electrochemical discharge. The entire machining gap becomes a potential area for electrochemical discharge.

[0050] like Figure 2As shown in (a) of FIG. 1, the surface of the grinding wheel constitutes a gradual machining area whether it is in contact with the machined surface on the left side of the target workpiece or the unprocessed surface on the right side. When the electrolyte fills the machining gap, electrochemical discharge will occur in the entire gap. This will lead to a large amount of stray discharge, consuming energy and reducing discharge stability. On the other hand, part of the electrochemical discharge will act on the machined surface, resulting in deterioration of the machining surface quality. Therefore, by changing the electrolyte film distribution to adjust the discharge position, the discharge localization is controlled, and the discharge localization in the machining process is ensured.

[0051] As shown in (a) of FIG. 1, Figure 2 As shown in (b) of FIG. 1, according to the relative spatial position of the machined area and the unprocessed area of the target workpiece surface, the ideal discharge position should occur on the right side of the grinding wheel, so the electrolyte film needs to be controlled on the right side of the grinding wheel. By setting three airflow restriction nozzles above, left and below the machining area, the flow direction of the nozzle outlet airflow is from the machined area to the unprocessed area, so as to concentrate the liquid film in the machining gap formed by the grinding wheel and the unprocessed area on the right side of the target workpiece as much as possible to control the discharge localization acting on the unprocessed area, thereby realizing the control of discharge localization.

[0052] As shown in (b) of FIG. 1, Figure 3 During the rotation of the grinding wheel, the high-speed rotation of the grinding wheel surface and the abrasive particles will squeeze and drive the electrolyte film in the machining area to move and accumulate in the same direction. Therefore, in the actual machining process, the electrolyte in the machining gap should be squeezed from the machined area to the unprocessed area by utilizing this characteristic. As shown in (b) of FIG. 1, Figure 3 The left side of the target workpiece should be the machined surface, and the right side of the target workpiece should be the unprocessed surface.

[0053] According to the discharge localization regulation method in the electrochemical discharge composite grinding method, the current machining area distribution characteristics of the workpiece surface of the target machining workpiece in the electrochemical discharge composite grinding machining process can be obtained based on the current machining task, so as to determine the target discharge position and the target liquid film distribution, to determine the rotation direction of the grinding wheel, and to determine the layout scheme of the nozzle based on the preset airflow constraint. The electrochemical discharge composite grinding machining pre-experiment of the target machining workpiece is performed according to the rotation direction and the layout scheme, so as to obtain the process parameter range meeting the preset constraint condition by using the experimental result, to adjust the working parameters of the grinding wheel and the nozzle under the current area space distribution characteristics, to constrain the electrochemical discharge position to the unprocessed surface of the target workpiece, to adjust the liquid film distribution by using the airflow constraint and the grinding wheel rotation state to control the discharge localization, to improve the discharge localization, and to realize that the discharge localization reliably and effectively occurs in the unprocessed area in the electrochemical discharge composite grinding machining process, until the current machining task is completed. Therefore, the technical problem that the applicable machining conditions are limited, the cost is high, and the discharge localization is difficult to be reliably and effectively constrained in the related art is solved, and the quality of the electrochemical discharge composite grinding machining is affected.

[0054] Secondly, the discharge localization regulation device in the electrochemical discharge composite grinding method according to the embodiments of the present application is described with reference to the accompanying drawings.

[0055] Figure 4 is a block schematic diagram of the discharge localization regulation device in the electrochemical discharge composite grinding method according to the embodiments of the present application.

[0056] As shown in Figure 4 , the discharge localization regulation device 10 in the electrochemical discharge composite grinding method includes an acquisition module 100, a determination module 200, a pre-experiment module 300 and a regulation module 400.

[0057] Specifically, the acquisition module 100 is configured to acquire the current machining area distribution characteristics of the workpiece surface of the target machining workpiece in the electrochemical discharge composite grinding machining process based on the current machining task, to determine the target discharge position and the target liquid film distribution based on the current machining area distribution characteristics.

[0058] The determination module 200 is configured to determine the rotation direction of the grinding wheel based on the target liquid film distribution, and to determine the layout scheme of the nozzle based on the preset airflow constraint.

[0059] The pre-experiment module 300 is configured to perform the electrochemical discharge composite grinding machining pre-experiment of the target machining workpiece based on the layout scheme and the rotation direction, to obtain the experimental result, and to obtain the process parameter range meeting the preset constraint condition by using the experimental result.

[0060] The regulation module 400 is configured to adjust the working parameters of the grinding wheel and the nozzle based on the process parameter range and the spatial distribution characteristics of the current region, so as to constrain the electrochemical discharge position to the unprocessed surface of the target workpiece based on the working parameters until the current machining task is completed.

[0061] Optionally, in an embodiment of the present application, the acquisition module 100 comprises a first acquisition unit and a first determination unit.

[0062] The first acquisition unit is configured to acquire the feeding direction of the grinding wheel in the electrochemical discharge composite grinding process, so as to obtain the spatial position of the processed region and the spatial position of the unprocessed region in the current region distribution characteristics.

[0063] The first determination unit is configured to take the machining gap formed between the grinding wheel and the unprocessed region as the target discharge position, and determine the target liquid film distribution based on the target discharge position.

[0064] Optionally, in an embodiment of the present application, the determination module 200 comprises a second determination unit.

[0065] The second determination unit is configured to determine the rotation direction in combination with the target liquid film distribution and the current region distribution characteristics, so as to extrude the electrolyte in the machining gap from the processed region to the unprocessed region when the grinding wheel is turned.

[0066] Optionally, in an embodiment of the present application, the determination module 200 comprises a setting unit.

[0067] The setting unit is configured to set the nozzle with the machining area of the target workpiece as the center, so that the outlet airflow of the nozzle flows from the processed region to the unprocessed region, and so that the liquid film is concentrated in the machining gap.

[0068] Optionally, in an embodiment of the present application, the pre-experiment module 300 comprises a second acquisition unit and an adjustment unit.

[0069] The second acquisition unit is configured to acquire the spark discharge position and the discharge influence area range in the machining gap.

[0070] The adjustment unit is configured to adjust the working parameters of the nozzle and the grinding wheel based on the spark discharge position and the discharge influence area range until the electrochemical discharge is constrained in the machining gap, so as to obtain the process parameter range.

[0071] It should be noted that the foregoing explanation and description of the embodiment of the method for regulating and controlling the discharge localization in the electrochemical discharge composite grinding also applies to the embodiment of the device for regulating and controlling the discharge localization in the electrochemical discharge composite grinding, which will not be described here.

[0072] The discharge localization regulation device in the electrochemical discharge composite grinding method and device provided by the embodiment of the application can obtain the current machining area distribution characteristics of the workpiece surface of the target machining workpiece in the electrochemical discharge composite grinding machining process based on the current machining task, so as to determine the target discharge position and the target liquid film distribution, determine the rotation direction of the grinding wheel, determine the layout scheme of the nozzle based on the preset airflow constraint, and perform the pre-experiment of the electrochemical discharge composite grinding machining of the target machining workpiece according to the rotation direction and the layout scheme, so as to obtain the process parameter range meeting the preset constraint condition by using the experimental result, adjust the working parameters of the grinding wheel and the nozzle under the current area space distribution characteristics respectively, constrain the electrochemical discharge position to the unprocessed surface of the target workpiece, adjust the liquid film distribution by using the airflow constraint and the rotation state of the grinding wheel to control the discharge localization, improve the discharge localization, and realize the reliable and effective constraint of the discharge localization in the electrochemical discharge composite grinding machining process. Thus, the technical problem that the applicable machining conditions are limited, the cost is high, the discharge localization is difficult to be reliably and effectively constrained, and the quality of the electrochemical discharge composite grinding machining is affected in the related art is solved.

[0073] Figure 5 The structure schematic diagram of the electronic device provided by the embodiment of the application is provided. The electronic device can include:

[0074] The memory 501, the processor 502, and the computer program stored in the memory 501 and executable on the processor 502.

[0075] The processor 502 implements the electrochemical discharge composite grinding method for regulating the discharge localization provided in the above embodiment when executing the program.

[0076] Further, the electronic device further includes:

[0077] The communication interface 503 is used for communication between the memory 501 and the processor 502.

[0078] The memory 501 is used for storing the computer program executable on the processor 502.

[0079] The memory 501 can include a high-speed RAM memory, and can also include a non-volatile memory, for example, at least one disk memory.

[0080] If the memory 501, the processor 502 and the communication interface 503 are implemented independently, the communication interface 503, the memory 501 and the processor 502 can be connected with each other through a bus and complete communication between each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For convenience of representation, Figure 5 Only one thick line is used to represent the bus in the figure, but it does not mean that there is only one bus or only one type of bus.

[0081] Optionally, in a specific implementation, if the memory 501, the processor 502 and the communication interface 503 are integrated on a chip, the memory 501, the processor 502 and the communication interface 503 can complete communication between each other through an internal interface.

[0082] The processor 502 can be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement one or more embodiments of the present application.

[0083] The embodiment further provides a computer readable storage medium, having stored thereon a computer program, which, when executed by a processor, implements the method for regulating discharge localization in electrochemical discharge composite grinding.

[0084] The embodiment of the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the method for regulating discharge localization in electrochemical discharge composite grinding provided by the embodiment of the present application.

[0085] In the description of the application, reference to "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, the usage of "N" means at least two, for example, two, three or the like, unless explicitly stated otherwise.

[0086] Furthermore, the terms "first", "second", or the like, are used merely as a designation of certain elements or features, and do not imply or connote relative importance or a specific order of categorization thereof. Accordingly, features described as "first" or "second" can be explicitly or implicitly included in at least one of the features. In the description of the application, the meaning of "N" is at least two, for example, two, three, etc., unless explicitly specified otherwise.

[0087] Any process or method descriptions or blocks in flow charts or otherwise described herein represent embodiments which can be managed as one or more modules, segments, or portions of code which include one or more executable instructions for implementing specific logic functions or steps, and alternate implementations are possible. In some embodiments, the processes and methods described can be executed by one or more apparatuses or devices, either directly or after conversion to another language. Alternatively, the processes and methods described herein can be executed by more than one apparatus or device working in concert.

[0088] The logic and / or steps represented in the flowcharts and / or described herein, for example, can be considered as a sequence of executable instructions stored in a computer readable medium, which can be executed by an instruction execution system, apparatus or device, such as a computer-based system, a processor-based system, or other system that can fetch the instructions from the instruction execution system, apparatus or device and execute the instructions, or a combination of them. For the purposes of this specification, a "computer readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus or device. The computer readable medium can be a computer readable storage medium or a computer readable signal medium. The computer readable storage medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a propagation medium. The computer readable signal medium can include, but is not limited to, a computer readable medium that facilitates transfer of the program from one place to another. A specific example of a computer readable medium is a non-transitory computer-readable storage medium. A specific example of a computer readable signal medium is a source or destination of the computer readable medium. Another specific example of a computer readable signal medium is a computer readable signal travelling through space. Thus, a computer readable medium can take many forms of hardware to carry out the program for use by or in connection with the instruction execution system, apparatus or device.

[0089] It should be understood that aspects of the application can be implemented in hardware, software, firmware or combinations thereof. In the above embodiments, the N steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As such, if implemented in hardware, and in another embodiment, any of the following technologies, known in the art, or their combinations can be used: discrete logic circuitry having logic gates for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and the like.

[0090] Those skilled in the art can understand that all or part of the steps carried out by the above-mentioned embodiment methods can be completed by programs instructing related hardware, and the programs can be stored in a computer readable storage medium. When the programs are executed, one or a combination of the steps of the method embodiments is included.

[0091] In addition, each of the functional units in the various embodiments of the present application can be integrated in one processing module, or each of the units can be physically present separately, or two or more units can be integrated in one module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0092] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A method for controlling discharge localization in electrochemical discharge composite grinding, characterized in that, Includes the following steps: Based on the current processing task, the current processing area distribution characteristics of the target workpiece surface during the electrochemical discharge composite grinding process are obtained, so as to determine the target discharge position and target liquid film distribution based on the current processing area distribution characteristics; Based on the target liquid film distribution, the rotation direction of the grinding wheel is determined, and the layout scheme of the nozzle is determined based on the preset airflow constraint. Based on the layout scheme and the rotation direction, a preliminary experiment of electrochemical discharge composite grinding of the target workpiece was conducted to obtain experimental results, and the process parameter range that meets the preset constraints was obtained using the experimental results. Based on the range of process parameters, the working parameters of the grinding wheel and the nozzle are adjusted according to the spatial distribution characteristics of the current processing area, so as to constrain the location of electrochemical discharge to the unprocessed surface of the target workpiece based on the working parameters, until the current processing task is completed.

2. The method according to claim 1, characterized in that, The step of acquiring the current processing area distribution characteristics of the target workpiece surface during electrochemical discharge composite grinding based on the current processing task, and determining the target discharge position and target liquid film distribution based on the current processing area distribution characteristics, includes: The feed direction of the grinding wheel during the electrochemical discharge composite grinding process is obtained to obtain the spatial position of the processed area and the spatial position of the unprocessed area in the current processing area distribution characteristics; The processing gap formed between the grinding wheel and the unprocessed area is taken as the target discharge position, and the target liquid film distribution is determined based on the target discharge position.

3. The method according to claim 2, characterized in that, Determining the rotation direction of the grinding wheel based on the target liquid film distribution includes: The rotation direction is determined by combining the target liquid film distribution and the current processing area distribution characteristics, so that when the grinding wheel turns, the electrolyte in the processing gap is squeezed from the processed area to the unprocessed area.

4. The method according to claim 2, characterized in that, The process of determining the rotation direction of the grinding wheel based on the shape of the target liquid film distribution and determining the nozzle layout scheme based on preset airflow constraints includes: The nozzle is positioned with the processing area of ​​the target workpiece as the center, so that the outlet airflow of the nozzle flows from the processed area to the unprocessed area, and the liquid film is concentrated in the processing gap.

5. The method according to claim 2, characterized in that, Based on the layout scheme and the rotation direction, a preliminary experiment of electrochemical discharge composite grinding of the target workpiece is conducted to obtain experimental results. The experimental results are then used to determine the range of process parameters that meet preset constraints, including: Obtain the location of the spark discharge and the range of the discharge-affected zone within the machining gap; The operating parameters of the nozzle and the grinding wheel are adjusted based on the spark discharge location and the range of the discharge influence zone until the electrochemical discharge is constrained within the machining gap to obtain the range of process parameters.

6. A device for controlling discharge localization in electrochemical discharge composite grinding, characterized in that, include: The acquisition module is used to acquire the current processing area distribution characteristics of the target workpiece surface during the electrochemical discharge composite grinding process based on the current processing task, so as to determine the target discharge position and target liquid film distribution based on the current processing area distribution characteristics; The determination module is used to determine the rotation direction of the grinding wheel based on the target liquid film distribution, and to determine the layout scheme of the nozzle based on the preset airflow constraint; The pre-experiment module is used to conduct a pre-experiment of electrochemical discharge composite grinding of the target workpiece based on the layout scheme and the rotation direction, obtain experimental results, and use the experimental results to obtain the range of process parameters that meet the preset constraints. The control module is used to adjust the working parameters of the grinding wheel and the nozzle respectively under the spatial distribution characteristics of the current processing area based on the process parameter range, so as to constrain the electrochemical discharge location to the unprocessed surface of the target workpiece based on the working parameters, until the current processing task is completed.

7. The apparatus according to claim 6, characterized in that, The acquisition module includes: The acquisition unit is used to acquire the feed direction of the grinding wheel during the electrochemical discharge composite grinding process, so as to obtain the spatial position of the processed area and the spatial position of the unprocessed area in the current processing area distribution characteristics; The determining unit is used to take the machining gap formed between the grinding wheel and the unprocessed area as the target discharge position, and to determine the target liquid film distribution based on the target discharge position.

8. An electronic device, characterized in that, include: The memory, the processor, and the computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for controlling discharge localization in electrochemical discharge composite grinding as described in any one of claims 1-5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the method for controlling the discharge localization in electrochemical discharge composite grinding as described in any one of claims 1-5.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed, it is used to implement the method for controlling the discharge localization in electrochemical discharge composite grinding as described in any one of claims 1-5.

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