Multi-discharge efficient precision machining equipment and method for milling cutter

Abstract

The invention discloses a multi-discharge efficient precision machining device and method for a milling cutter. The multi-discharge efficient precision machining device comprises a high-precision machining tool, an electric spark machining pulse power supply, a discharge monitoring device and a detection device. The high-precision machining machine tool comprises an electric spark machining machine tool, a spindle, a grinding wheel, a workbench and a machine tool body. The main shaft supports accurate movement in three directions; stable and controllable pulse current and voltage are output through the electric spark machining pulse power supply; a voltage probe and a current probe are arranged on the discharge monitoring device, and discharge voltage and current data are collected in real time through the voltage probe and the current probe; the detection device comprises a non-contact optical measuring instrument, the abrasion of the grinding wheel is monitored through the non-contact optical measuring instrument, meanwhile, the machining allowance of the milling cutter blank placed on the workbench and the size precision after finish machining are measured, and the surface quality of the milling cutter is detected; the machining precision and efficiency of the milling cutter are improved, and efficient precision machining of the milling cutter is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of milling cutter processing, in particular to a multi-discharge high-efficiency precision processing device and method for a milling cutter. Background Art

[0002] As modern manufacturing continues to move toward higher precision and greater sophistication, the precision requirements for key cutting tools like milling cutters are becoming increasingly stringent. Electrospark machining (EDM) technology, with its unique advantages such as non-contact machining and ability to process complex shapes and difficult-to-cut materials, has gained widespread application in milling cutter processing.

[0003] However, current EDM milling technology faces numerous challenges. In terms of machining accuracy, a single EDM grinding operation struggles to precisely control the dimensional accuracy and surface quality of the milling cutter. Milling cutter machining accuracy directly impacts the quality and efficiency of subsequent machining operations. Deviations in the dimensional accuracy of the milling cutter can lead to dimensional and shape errors in the workpiece during machining. Poor surface quality can also reduce the cutting performance of the milling cutter and shorten its service life. For example, in the machining of aerospace components, even small dimensional errors in the milling cutter can affect the performance and safety of the entire component.

[0004] Furthermore, the efficiency of existing machining technologies is insufficient to meet production needs. During milling, improper discharge parameter selection and imperfect machining processes result in long machining times. Furthermore, the lack of real-time monitoring and precise control of the machining process makes various anomalies, such as unstable discharge, more likely to occur, further reducing machining efficiency.

[0005] In summary, the development of a multiple discharge machining method and supporting equipment that can improve the milling cutter machining accuracy and efficiency has important practical significance, and plays a key role in promoting the high-end development of the manufacturing industry and improving product quality and production efficiency. Summary of the Invention

[0006] The main purpose of the present invention is to provide a milling cutter multiple discharge high-efficiency precision machining equipment and method, to solve the problems existing in the existing milling cutter machining technology such as difficult to ensure machining accuracy, low machining efficiency and large grinding wheel loss.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a multi-discharge high-efficiency precision machining equipment for a milling cutter, comprising a high-precision machining machine, an EDM pulse power supply, a discharge monitoring device, and a detection device;

[0008] The high-precision machining center includes an EDM machine, a spindle, a grinding wheel, a worktable and a machine body; the worktable is located at the upper end of the machine body, the EDM machine is located at the upper end of the worktable, and the grinding wheel is installed at the lower end of the EDM machine. The spindle supports precise movement in the X, Y and Z directions, and the positioning accuracy meets the strict requirements of multiple EDM machining of the milling cutter for accuracy, and the repeated positioning accuracy is high; among them, the grinding wheel adopts a copper grinding wheel with good conductivity and suitable grinding performance.

[0009] The EDM pulse power supply is located on one side of the machine tool body, and outputs stable and controllable pulse current and voltage through the EDM pulse power supply; the voltage output range can be flexibly adjusted to meet the requirements of high energy discharge during rough machining and micro energy discharge during fine machining; the current output range also has good adaptability and can be adjusted according to machining requirements;

[0010] The discharge monitoring device is provided with a voltage probe and a current probe, which are used to collect discharge voltage and current data in real time, with high collection accuracy, and can keenly capture changes in discharge parameters; at the same time, the collected voltage and current data are calculated using the discharge monitoring device, and when the preset conditions are met, no processing is performed; when the preset conditions are not met, the feed rate is increased or decreased accordingly;

[0011] The detection device includes a non-contact optical measuring instrument, which monitors the loss of the copper grinding wheel and ensures that the accuracy meets the requirements; at the same time, it measures the machining allowance and dimensional accuracy of the milling cutter blank placed on the workbench after finishing, and detects the surface quality of the milling cutter.

[0012] Preferably, the electric high-precision machining center supports the milling cutter blank and the copper grinding wheel to perform machining operations according to a preset back-and-forth motion path, controls the relative position and motion trajectory between the milling cutter blank and the copper grinding wheel, and ensures machining accuracy.

[0013] Preferably, the pulse width and pulse interval are adjusted by the EDM pulse power supply, thereby flexibly setting the discharge parameters according to different machining stages and machining processes, wherein the pulse width and pulse interval range are both 0-9500 μs.

[0014] The present invention also provides a method for machining a milling cutter using multiple discharge high-efficiency precision machining equipment, comprising the following steps:

[0015] S1. Workpiece clamping and positioning: firmly mount the milling cutter blank on the workbench of the machine tool to ensure accurate positioning of the workpiece; mount the copper grinding wheel on the spindle at the lower end of the EDM machine tool, and adjust the relative position between the copper grinding wheel and the milling cutter blank to ensure that they are in the appropriate processing position;

[0016] S2. Parameter planning and setting: Plan the machining parameters based on the material properties of the workpiece, the expected machining accuracy, and the performance of the copper grinding wheel. In the roughing stage, set parameters with the main goal of improving machining efficiency and determine the maximum feed depth for each roughing stage. In the finishing stage, set parameters to ensure dimensional accuracy and surface quality, determine the micro-feed depth for each finishing stage, and plan the number of roughing and finishing stages. At the same time, plan the machining path as a back-and-forth motion, that is, the first machining is from point a to point b, and the subsequent machining is carried out in a cycle from point b to point a and point a to point b.

[0017] S3, Roughing and Monitoring: Start the EDM machine and EDM pulse power supply, and perform multiple roughing operations according to the roughing parameters; use a back-and-forth motion method; during the roughing process, use the discharge monitoring device to monitor the discharge status in real time, including the discharge voltage, current stability, and spark morphology; and monitor the wear of the copper grinding wheel; measure the milling cutter blank at regular intervals to monitor the processing progress, but do not perform strict precision control;

[0018] S4. Finishing and testing: Perform multiple finishing operations according to the finishing parameters. After each finishing operation, use a detection device to detect the dimensional accuracy and surface quality of the milling cutter, and adjust the subsequent finishing parameters based on the test results. The parameters include processing voltage, current, pulse width, pulse interval, grinding wheel speed, and feed depth. Continue this process until the dimensional accuracy and surface quality of the milling cutter blank meet the predetermined processing standards, and the processing is completed.

[0019] Preferably, during the clamping process of the milling cutter blank in step S1, a high-precision clamping device is used to fix the milling cutter blank, and the positioning element is used to ensure that the milling cutter blank is stable during processing; if the initial distance is detected, the processing power is turned on and a short circuit detection is performed. When the milling cutter blank contacts the copper grinding wheel, a short circuit reminder appears, and the milling cutter blank is axially retreated to a preset processing distance before subsequent grinding operations are performed.

[0020] Preferably, the processing stage includes a rough processing stage and a fine processing stage:

[0021] 1) During the rough machining phase, the machining voltage is adjusted to a first voltage range, the working current is controlled to a first current intensity, the pulse width is set to a first duration, the pulse interval is adjusted to a first interval period, and the electrode feed amount is synchronously matched to a first feed rate to achieve efficient material removal;

[0022] 2) In the finishing stage, the machining voltage is adjusted to a second voltage range, the operating current is controlled to a second current intensity, the pulse width is set to a second duration, the pulse interval is adjusted to a second interval period, and the electrode feed amount is synchronously matched to a second feed rate to achieve precision forming processing;

[0023] The lowest value of the first voltage range is higher than the highest value of the second voltage range, the first current intensity is greater than the second current intensity, the first duration is longer than the second duration, the first interval period is shorter than the second interval period, and the first feed rate is significantly higher than the second feed rate.

[0024] Preferably, during the rough machining monitoring process of step S3, the discharge status is monitored in real time by a discharge monitoring device, and the discharge voltage and current data are collected in real time by a voltage probe and a current probe respectively. The single chip microcomputer in the discharge monitoring device calculates and analyzes the collected data. If the discharge probability is abnormal, the machining is automatically adjusted, the feed rate is reduced, or the machining inspection equipment is paused.

[0025] Preferably, during the finishing inspection process of step S4, the milling cutter machining allowance and the dimensional accuracy after finishing are measured by a detection device, and the roughing times and finishing parameters are adjusted according to the measurement results, and the grinding wheel feed rate is adjusted.

[0026] Compared with the existing technology, the beneficial effects of the present invention are as follows: the present invention improves the milling cutter processing accuracy and efficiency, reduces the copper grinding wheel loss, and realizes efficient and precise processing of the milling cutter through multiple discharge machining cycles, back-and-forth motion processing mode, and precise parameter control and monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0028] In the attached figure:

[0029] Figure 1 This is a schematic diagram of the high-efficiency precision machining equipment for multiple electric discharges of the milling cutter of the present invention;

[0030] Figure 2 This is a flow chart of the multi-discharge high-efficiency precision machining method of the milling cutter of the present invention;

[0031] Figure 3 is a functional flow chart of the discharge detection device of the present invention;

[0032] Figure 4 Schematic diagram of the present invention for machining a straight groove in a milling cutter blank, wherein a is a schematic diagram before the straight groove is machined, b is a schematic diagram of the alignment of the grinding wheel and the milling cutter blank, c is a schematic diagram after multiple rough machining by the milling cutter, and d is a schematic diagram after multiple fine machining;

[0033] Numbers in the figure: 1. EDM machine tool; 2. Spindle; 3. Grinding wheel; 4. Non-contact optical measuring instrument; 5. Milling cutter blank; 6. Workbench; 7. Machine tool body; 8. EDM pulse power supply; 9. Voltage probe; 10. Current probe; 11. Discharge monitoring device. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] like Figure 1 As shown, a multi-discharge high-efficiency precision machining equipment for a milling cutter includes a high-precision machining machine, an EDM pulse power supply 8, a discharge monitoring device 11 and a detection device.

[0036] The high-precision machining center includes an EDM machine 1, a spindle 2, a grinding wheel 3, a worktable 6, and a machine body 7; the worktable 6 is located at the upper end of the machine body 7, the EDM machine 1 is located at the upper end of the worktable 6, and the grinding wheel 3 is installed at the lower end of the EDM machine 1. The spindle 2 supports precise movement in the X, Y, and Z directions, and the positioning accuracy meets the strict requirements of the accuracy of multiple discharge machining of the milling cutter, and the repeated positioning accuracy is high; wherein, the grinding wheel 3 adopts a copper grinding wheel 3 with good conductivity and suitable grinding performance. The electric high-precision machining center supports the milling cutter blank 5 and the copper grinding wheel 3 to perform machining operations according to a preset back-and-forth motion path, controls the relative position and motion trajectory between the milling cutter blank 5 and the copper grinding wheel 3, and ensures machining accuracy.

[0037] The EDM pulse power supply 8 is located on one side of the machine tool body 7, and the EDM pulse power supply 8 outputs stable and controllable pulse current and voltage; the voltage output range is flexibly adjusted to meet the high-energy discharge during rough machining and the micro-energy discharge during fine machining; the current output range also has good adaptability and can be adjusted according to the machining requirements. The pulse width and pulse interval are adjusted by the EDM pulse power supply 8, and the discharge parameters are flexibly set according to different machining stages and machining processes, wherein the pulse width and pulse interval range are both 0-9500μs.

[0038] The discharge monitoring device 11 is provided with a voltage probe 9 and a current probe 10, which are used to collect discharge voltage and current data in real time. The collection accuracy is high and the changes in discharge parameters can be keenly captured. At the same time, the discharge monitoring device 11 is used to calculate the collected voltage and current data. When the preset conditions are met, no processing is performed; when the preset conditions are not met, the feed rate is increased or decreased accordingly.

[0039] The detection device includes a non-contact optical measuring instrument 4, which monitors the loss of the copper grinding wheel 3 and ensures that the accuracy meets the requirements; at the same time, it measures the machining allowance and dimensional accuracy after finishing of the milling cutter blank 5 placed on the workbench 6, and detects the surface quality of the milling cutter.

[0040] like Figure 2 As shown, the present invention also provides a method for processing a milling cutter with multiple electric discharge high-efficiency precision processing equipment, comprising the following steps:

[0041] S1. Workpiece clamping and positioning: The milling cutter blank 5 is firmly mounted on the workbench 6 of the machine tool body 7 to ensure accurate positioning of the workpiece; the copper grinding wheel 3 is mounted on the spindle 2 at the lower end of the EDM machine tool 1, and the relative position between the copper grinding wheel 3 and the milling cutter blank 5 is adjusted to ensure that the two are in the appropriate processing position;

[0042] During the clamping process of the milling cutter blank 5 in step S1, a high-precision clamping device is used to fix the milling cutter blank 5, and the positioning element is used to ensure that the milling cutter blank 5 is stable during processing; if the initial distance is detected, the processing power is turned on and a short circuit detection is performed. When the milling cutter blank 5 contacts the copper grinding wheel 3, a short circuit reminder appears, and the milling cutter blank 5 is axially retreated to the preset processing distance, and then subsequent grinding operations are performed.

[0043] S2. Parameter planning and setting: Plan the machining parameters according to the material characteristics of the workpiece, the expected machining accuracy, and the performance of the copper grinding wheel 3; in the rough machining stage, set the parameters with the main goal of improving machining efficiency, and determine the maximum feed depth for each rough machining; in the fine machining stage, set the parameters to ensure dimensional accuracy and surface quality, determine the micro feed depth for each fine machining, and plan the number of rough and fine machining; at the same time, plan the machining path as a back-and-forth motion, that is, the first machining is from point a to point b, and the subsequent machining is carried out in a cycle from point b to point a and point a to point b.

[0044] Among them, the processing stage includes the rough processing stage and the fine processing stage:

[0045] 1) During the rough machining phase, the machining voltage is adjusted to a first voltage range, the working current is controlled to a first current intensity, the pulse width is set to a first duration, the pulse interval is adjusted to a first interval period, and the electrode feed amount is synchronously matched to a first feed rate to achieve efficient material removal;

[0046] 2) In the finishing stage, the machining voltage is adjusted to a second voltage range, the operating current is controlled to a second current intensity, the pulse width is set to a second duration, the pulse interval is adjusted to a second interval period, and the electrode feed amount is synchronously matched to a second feed rate to achieve precision forming processing;

[0047] The lowest value of the first voltage range is higher than the highest value of the second voltage range, the first current intensity is greater than the second current intensity, the first duration is longer than the second duration, the first interval period is shorter than the second interval period, and the first feed rate is significantly higher than the second feed rate.

[0048] S3, rough machining and monitoring: start the EDM machine 1 and the EDM pulse power supply 8, and perform rough machining multiple times according to the rough machining parameters; adopt a back and forth motion method; during the rough machining process, the discharge state is monitored in real time by the discharge monitoring device 11, including the discharge voltage, current stability and spark morphology; at the same time, the loss of the copper grinding wheel 3 is monitored; the milling cutter blank 5 is measured at regular intervals to grasp the machining progress, but no strict precision control is performed; specifically, the discharge state is monitored in real time by the discharge monitoring device 11, and the discharge voltage and current data are collected in real time by the voltage probe 9 and the current probe 10 respectively. The single chip microcomputer in the discharge monitoring device 11 calculates and analyzes the collected data. If the discharge probability is abnormal, the machining is automatically adjusted to reduce the feed rate or suspend the machining inspection equipment.

[0049] like Figure 3 As shown, the discharge monitoring device 11 first counts the pulses during the discharge process; then, based on the pulse count results, it performs a probability calculation and compares the calculated probability with a set probability. If the probability is greater than the set probability, the feed rate is reduced and a speed servo signal is output. If the probability is not greater than the set probability, the feed rate is increased and a speed servo signal is output. Simultaneously, the EDM program begins, the initial machining parameters are set, and the feed speed is adjusted based on factors such as the speed servo signal output by the discharge monitoring device 11. The program then checks whether the current machining task is complete. If not, the program returns to the "feed speed adjustment" step to continue adjustment and machining. If completed, the EDM program ends.

[0050] S4. Finishing and inspection: Perform multiple finishing operations according to the finishing parameters; after each finishing operation, use a detection device to detect the dimensional accuracy and surface quality of the milling cutter, and adjust the parameters of subsequent finishing according to the detection results. The parameters include processing voltage, current, pulse width, pulse interval, grinding wheel 3 speed and feed depth. Continue this process until the dimensional accuracy and surface quality of the milling cutter blank meet the predetermined processing standards and the processing is completed; specifically, use a detection device to measure the milling cutter processing allowance and perform dimensional accuracy inspection after finishing, and adjust the number of roughing operations, finishing parameters, and feed amount of grinding wheel 3 according to the measurement results.

[0051] This embodiment takes the example of forming a linear groove on a milling cutter blank 5 to describe in detail the specific implementation process of the multi-discharge high-efficiency precision machining method and equipment for the milling cutter of the present invention.

[0052] First, if Figure 1As shown, prepare the machining equipment. Adjust the EDM machine 1 to normal working condition and check the stability of the machine body 7 and the connection of each component. At the same time, connect the EDM pulse power supply 8, ensure that the voltage probe 9 and current probe 10 are correctly installed so that they can accurately collect discharge voltage and current data, and connect them to the discharge monitoring device 11 to achieve real-time monitoring of the discharge status. Install a non-contact optical measuring instrument 4 for real-time monitoring of the wear of the copper grinding wheel 3 and related parameters of the milling cutter.

[0053] Then, if Figure 4 (a) Figure 4 As shown in (b), the workpiece is clamped and positioned. The copper grinding wheel 3 is mounted on the spindle 2, ensuring it is securely mounted and well-balanced. The milling cutter blank 4 is clamped on the workbench 6, ensuring that the copper grinding wheel 3 and the milling cutter blank 4 are in the proper machining position.

[0054] Then, the parameters are planned and set. According to the material properties of the milling cutter blank 4, the expected processing accuracy and the performance of the copper grinding wheel 3, the processing parameters are planned. In the rough processing stage, with improving processing efficiency as the main goal, the maximum feed depth is determined to be 0.1mm. By increasing the processing voltage to 100V, increasing the current to 15A, extending the pulse width to 150μs and reducing the pulse interval to 100μs, combined with a larger electrode feed, the feed speed is set to 5mm / min to improve the processing efficiency. In the fine processing stage, in order to ensure dimensional accuracy and surface quality, the micro feed depth is determined to be 0.01mm. Reduce the processing voltage to 30V, reduce the current to 5A, shorten the pulse width to 50μs and increase the pulse interval to 400μs, and use a micro electrode feed, and the feed speed is set to 2mm / min. At the same time, plan the approximate number of roughing and finishing, 3 times for roughing and 5 times for finishing, and determine the machining path as a back-and-forth motion, that is, the first machining is from one end of the linear slot (set as point a) to the other end (set as point b), the second from point b to point a, and so on.

[0055] Afterwards, if Figure 4 As shown in (c), rough machining and monitoring begin. Start the EDM machine 1 and the EDM pulse power supply 8, and perform multiple rough machining according to the rough machining parameters, using a back-and-forth motion method. During the machining process, the discharge status is monitored in real time by the discharge monitoring device 11. The voltage probe 9 and the current probe 10 collect the discharge voltage and current data in real time, and the single-chip microcomputer in the discharge monitoring device 11 calculates and analyzes the collected data. If the discharge probability is abnormal, the machining is automatically adjusted, the feed rate is reduced, or the machining inspection equipment is paused. At the same time, the non-contact optical measuring instrument 4 monitors the wear of the copper grinding wheel 3 and the machining status of the milling cutter blank to grasp the machining progress.

[0056] like Figure 4As shown in Figure (d), after rough machining is complete, the finishing and inspection phase begins. Multiple finishing operations are performed according to the finishing parameters, also using a back-and-forth motion. After each finishing operation, a non-contact optical measuring instrument 4 is used to accurately inspect the dimensional accuracy of the linear slots in the milling cutter blank 5, including the slot width, slot depth, and surface quality, i.e., surface roughness. Subsequent finishing parameters are adjusted based on the inspection results. This process continues until the dimensional accuracy and surface quality of the linear slots in the milling cutter blank 5 meet the predetermined machining standards, completing the machining process.

[0057] During the entire machining process, the operator can monitor the machining status in real time through the control system of the EDM machine 1 and make necessary interventions and adjustments based on actual conditions.

[0058] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A milling cutter multiple discharge high-efficiency precision processing equipment, characterized by: Including high-precision machining machine tools, EDM pulse power supplies, discharge monitoring devices and detection devices; The high-precision machining center includes an EDM machine, a spindle, a grinding wheel, a workbench, and a machine body; the workbench is located at the upper end of the machine body, the EDM machine is located at the upper end of the workbench, the grinding wheel is installed at the lower end of the EDM machine, and the spindle supports precise movement in the X, Y, and Z directions; The EDM pulse power supply is located on one side of the machine tool body, and outputs stable and controllable pulse current and voltage through the EDM pulse power supply; The discharge monitoring device is provided with a voltage probe and a current probe, which are used to collect discharge voltage and current data in real time. At the same time, the discharge monitoring device is used to calculate the collected voltage and current data. When the preset conditions are met, no processing is performed; when the preset conditions are not met, the feed rate is increased or decreased accordingly; The detection device includes a non-contact optical measuring instrument, which monitors the grinding wheel loss and meets the accuracy requirements; at the same time, it measures the machining allowance and dimensional accuracy of the milling cutter blank placed on the workbench after finishing, and detects the surface quality of the milling cutter.

2. The high-efficiency precision machining equipment for multiple electric discharges of a milling cutter according to claim 1, characterized in that: The electric high-precision machining center supports the milling cutter blank and the grinding wheel to perform machining operations according to a preset back-and-forth motion path, controls the relative position and motion trajectory between the milling cutter blank and the grinding wheel, and ensures machining accuracy.

3. The high-efficiency precision machining equipment for multiple electric discharges of a milling cutter according to claim 1, characterized in that: The pulse width and pulse interval are adjusted by the EDM pulse power supply, and the discharge parameters are flexibly set according to different machining stages and machining processes, wherein the pulse width and pulse interval ranges are both 0-9500 μs.

4. A processing method for a milling cutter multi-discharge high-efficiency precision processing equipment based on any one of claims 1 to 3, characterized in that: The following steps are involved: S1. Workpiece clamping and positioning: Install the milling cutter blank on the workbench of the machine tool to ensure accurate positioning of the workpiece; install the grinding wheel on the spindle at the lower end of the EDM machine tool and adjust the relative position between the grinding wheel and the milling cutter blank; S2. Parameter planning and setting: Plan the machining parameters based on the material characteristics of the workpiece, the expected machining accuracy, and the performance of the grinding wheel. In the roughing stage, set parameters with the main goal of improving machining efficiency and determine the maximum feed depth for each roughing stage. In the finishing stage, set parameters to ensure dimensional accuracy and surface quality, determine the micro-feed depth for each finishing stage, and plan the number of roughing and finishing stages. At the same time, plan the machining path as a back-and-forth motion. S3. Roughing and monitoring: Start the EDM machine and EDM pulse power supply, and perform roughing multiple times according to the roughing parameters; use a back-and-forth motion method; during the roughing process, use the discharge monitoring device to monitor the discharge status in real time, including the discharge voltage, current stability, and spark morphology; monitor the wear of the grinding wheel at the same time; and measure the milling cutter blank at regular intervals; S4. Finishing and testing: Perform multiple finishing operations according to the finishing parameters. After each finishing operation, use a detection device to detect the dimensional accuracy and surface quality of the milling cutter, and adjust the subsequent finishing parameters based on the test results. The parameters include processing voltage, current, pulse width, pulse interval, grinding wheel speed, and feed depth. Continue this process until the dimensional accuracy and surface quality of the milling cutter blank meet the predetermined processing standards, and the processing is completed.

5. The method for machining a milling cutter by multiple electric discharge high-efficiency precision machining equipment according to claim 4, characterized in that: During the milling cutter blank clamping process in step S1, the milling cutter blank is fixed with a clamping device, and the positioning element is used to ensure that the milling cutter blank is stable during processing; if the initial distance is detected, the processing power is turned on and a short circuit detection is performed. When the milling cutter blank contacts the grinding wheel, a short circuit reminder appears, and the milling cutter blank is axially retreated to the preset processing distance before subsequent grinding operations are performed.

6. The method for machining a milling cutter by multiple electric discharge high-efficiency precision machining equipment according to claim 4, characterized in that: The processing stages include rough processing and finishing: 1) During the rough machining phase, the machining voltage is adjusted to a first voltage range, the working current is controlled to a first current intensity, the pulse width is set to a first duration, the pulse interval is adjusted to a first interval period, and the electrode feed amount is synchronously matched to a first feed rate to achieve efficient material removal; 2) In the finishing stage, the machining voltage is adjusted to a second voltage range, the operating current is controlled to a second current intensity, the pulse width is set to a second duration, the pulse interval is adjusted to a second interval period, and the electrode feed amount is synchronously matched to a second feed rate to achieve precision forming processing; The lowest value of the first voltage range is higher than the highest value of the second voltage range, the first current intensity is greater than the second current intensity, the first duration is longer than the second duration, the first interval period is shorter than the second interval period, and the first feed rate is significantly higher than the second feed rate.

7. The method for machining a milling cutter by multiple electric discharge high-efficiency precision machining equipment according to claim 4, characterized in that: During the rough machining monitoring process of step S3, the discharge status is monitored in real time by the discharge monitoring device, and the discharge voltage and current data are collected in real time by the voltage probe and the current probe respectively. The single chip microcomputer in the discharge monitoring device calculates and analyzes the collected data. If the discharge probability is abnormal, the processing is automatically adjusted, the feed rate is reduced, or the processing inspection equipment is paused.

8. The method for machining a milling cutter by multiple electric discharge high-efficiency precision machining equipment according to claim 4, characterized in that: During the finishing inspection process of step S4, the milling cutter machining allowance and the dimensional accuracy after finishing are measured by the detection device, and the roughing times and finishing parameters are adjusted according to the measurement results, and the grinding wheel feed rate is adjusted.

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