A discharge power supply and motion control method and device

Abstract

The present invention discloses a discharge power supply and motion control method and device, including a control device and a control method, wherein the control device includes: a host computer control system, a discharge and motion control system, and an actuator, wherein the control method is that after the user edits the graphic file and selects the processing index, the high-frequency discharge module in the host computer control system sends the group number corresponding to the processing parameter to the intelligent processing parameter control board, and the intelligent processing parameter control board generates the electrical parameters required for processing, and then sends them to the intelligent high-frequency oscillation board through a specific communication protocol, and the high-frequency oscillation board oscillates the waveform required for high-frequency processing, and then sends the high-frequency processing signal after oscillation to the high-frequency amplification power board, and finally forms the voltage required for processing between the metal wire electrode and the workpiece. The surface roughness of the workpiece obtained by the present invention is better, the processing efficiency of the workpiece is higher, and it has a more intelligent alarm function.

Description

Technical Field

[0001] The invention relates to the technical field of electric discharge machining machines, and in particular to a discharge power supply and a motion control method and device. Background Art

[0002] Generally, in order to improve the surface roughness of the finished product made by EDM, multiple steps with different processing conditions are performed. First, the desired contour is roughly formed on the workpiece, then the excess material is removed from the cut surface with high precision, and finally the roughness of the cut surface is improved by fine machining again. During rough machining, the pulse power width provided by the power system of the EDM machine tool to the machining gap between the wire electrode and the workpiece is between tens and hundreds of microseconds, the voltage peak is approximately between 60V and 100V, and the duty cycle is between 1:5 and 1:10. During fine machining, the pulse power width provided by the power system of the EDM machine tool to the machining gap between the wire electrode and the workpiece is between hundreds of nanoseconds and ten microseconds, the voltage peak is approximately between 60V and 100V, and the duty cycle is between 1:10 and 1:15. The function of the discharge detection device in the EDM machine tool is to collect the above-mentioned voltage pulse signal and judge in real time whether discharge occurs between the wire motor and the workpiece through the collected voltage pulse signal. The discharge detection device converts the collected and processed voltage pulse signal into a frequency signal through the V / F conversion circuit and transmits it to the servo feed system of the EDM machine. The servo feed system of the machine determines the speed of the feed axis of the machine tool during the EDM process through the above frequency signal. If the feed axis moves too fast, it may cause a short circuit between the workpiece and the wire motor and wire breakage. If the feed axis moves too slowly, the efficiency of processing the workpiece will be reduced. It can be seen that the performance of the discharge detection device not only directly affects the efficiency of the entire EDM process, but also determines whether the EDM machine can work reliably for a long time without short circuit and wire breakage. The digital and precise adjustment of the discharge voltage can make the processing process more controllable and more in line with the requirements of the process. Rough processing focuses on efficiency and requires higher energy. Fine processing focuses on surface quality, so it is necessary to finely control the discharge energy output. The digital and precise adjustment of the discharge voltage makes it possible to meet both high efficiency and high quality at the same time, and can also quickly and accurately release the irregular voltage waveform required for processing.

[0003] Conventional discharge power supplies and motion control devices such as Figure 1As shown, the figure includes the host computer control system, discharge and motion control system and actuator. After the user edits the graphic file and selects the processing index, the high-frequency discharge module in the host computer control system calls the discharge parameters in the database, and oscillates the waveform required for high-frequency processing through the board card, and sends the high-frequency processing signal to the high-frequency square high-power board, and finally forms the pulse voltage required for processing between the metal wire electrode and the workpiece; at the same time, the host computer control system receives the sampling signal from the sampling board, and the sampling signal feeds back the normal discharge, short circuit, no-load and other states in the processing process to the host computer control system. Based on the sampling signal, the host computer sends the pulse signal of motion feed to the servo motor controller, thereby driving the motion module to feed; the host computer control system will also drive the cutting fluid circulation system to open and close according to the processing settings, and control the direction and frequency of the wire feeding motor, thereby ensuring the smooth progress of the processing process.

[0004] As mentioned above, the traditional discharge power supply and motion control device cannot adjust the discharge voltage, which makes it impossible to load the ideal processing parameter waveform between the metal wire electrode and the workpiece through the high-frequency square power board, thereby limiting the upper limit of the processing quality. In addition, the traditional discharge detection device does not accurately judge whether the discharge process occurs in real time, which affects the processing efficiency and the roughness of the workpiece surface. The waveform required for high-frequency processing is oscillated through the card board, which lacks real-time performance, and there is signal attenuation and distortion caused by the long transmission distance, which further affects the processing quality. At the same time, the position control of the Z axis is lacking, and there is no positioning and automatic homing, which will affect the accuracy of taper processing. Summary of the invention

[0005] The object of the present invention is to provide a discharge power supply and a motion control method and device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A discharge power supply and motion control method and device, including a control device and a control method, wherein the control device includes: a host computer control system, a discharge and motion control system, and an actuator, wherein the host computer control system includes: a graphic file, an axis feed drive module, and a high-frequency discharge module, wherein the discharge and motion control system includes: an intelligent processing parameter control board, an intelligent high-frequency oscillation board, a high-frequency amplification power board, a high-frequency discharge power board, a drive board, a high-frequency fine sampling board, a cutting fluid circulation system, a servo motor controller, and a wire-feeding motor controller, wherein the actuator includes: an axis feed motion module, a wire-feeding mechanism, an electronic pulse handwheel, and a discharge mechanism, wherein the control method is that after the user edits the graphic file and selects the processing index, the high-frequency discharge module in the host computer control system sends the group number corresponding to the processing parameter to the intelligent processing parameter control board, the intelligent processing parameter control board generates the electrical parameters required for processing, and then sends them to the intelligent high-frequency oscillation board through a specific communication protocol, the high-frequency oscillation board oscillates the waveform required for high-frequency processing, and then sends the high-frequency processing signal after the oscillation is completed to the high-frequency amplification power board, and finally forms the voltage required for processing between the metal wire electrode and the workpiece.

[0008] To implement the above technical solution, an upgraded and optimized high-frequency fine sampling board can be used to distinguish and collect the machining voltage signals of rough and fine machining, and the judgment on whether a discharge process occurs in the machining gap is more accurate, especially the sampling of discharge pulses with a pulse width of less than 1us is more accurate, which can improve the machining speed in the fine machining stage and avoid stagnation of axis feed due to misjudgment of short circuit, etc.; the intelligent high-frequency oscillation board can improve the real-time performance of the oscillation waveform, and the high-frequency discharge power supply board can make the voltage of discharge machining accurately adjustable, and improve the frequency of discharge, so that the metal wire electrode and the workpiece can be discharged according to the theoretical waveform, so that the surface roughness of the workpiece is better, the machining efficiency of the workpiece is higher, and it has a more intelligent alarm function.

[0009] As a preferred solution of the present invention, the high-frequency fine sampling board includes: a rough processing sampling circuit, a fine processing sampling circuit, a sampling voltage switching circuit, a V / F conversion circuit 1, a V / F conversion circuit 2, a drive feed pulse switching circuit, and a status monitoring and processing circuit.

[0010] To implement the above technical solution, rough machining and fine machining use two different sampling circuits and V / F conversion circuits to complete the processing and V / F conversion of the input sampling voltage signal. The two sampling circuits and V / F conversion circuits correspond to different frequency ranges of the input sampling voltage that are suitable for processing. The rough machining sampling circuit and V / F conversion circuit 1 are suitable for processing pulse signals with a pulse power width between tens and one hundred microseconds, and the fine machining sampling circuit and V / F conversion circuit 2 are suitable for processing pulse signals with a pulse power width between hundreds of nanoseconds and ten microseconds. The sampling voltage ranges within the two sampling circuits can be adjusted by the sampling voltage switching instructions issued by the intelligent high-frequency oscillation board. The selection and switching of the two sampling circuits are completed by the coarse and fine sampling switching instructions issued by the intelligent high-frequency oscillation board. The driving feed pulses output by the high-frequency fine sampling board are respectively sent to the intelligent high-frequency oscillation board and the driving board to realize the monitoring of the discharge process and generate the pulse signals required for servo feeding. In addition, the high-frequency fine sampling board also has the functions of broken wire detection, alarm, and centering.

[0011] As a preferred solution of the present invention, the high-frequency discharge power supply board includes: an adjustable output voltage value switching circuit, a 60V to 100V adjustable DC regulated power supply circuit, a +12V regulated power supply circuit, and a status monitoring and processing circuit.

[0012] To implement the above technical solution, the input is a three-phase 200V AC power supply, and the output is a DC regulated power supply with a limited adjustable voltage range of 60V to 100V. The maximum output power of the DC regulated power supply can reach 1.5KW, and the operating frequency is 70KHz. The voltage value of the regulated power supply output by the high-frequency discharge power supply board can be adjusted according to the adjustable power supply voltage switching instruction input signal output by the intelligent high-frequency oscillation board to ensure that the power supply provided to the high-frequency amplifier power board can meet the processing requirements of different types of workpieces, so that the metal wire electrode and the workpiece can be discharged according to the ideal waveform, thereby improving the surface quality of the processing. The high-frequency discharge power supply board generates a +12V DC regulated power supply for use in its own control circuit part. The high-frequency discharge power supply board can also monitor the real-time status of the adjustable DC regulated power supply output to the high-frequency amplifier power board and output over-temperature, over-current, and over-voltage alarm signals to the intelligent high-frequency oscillation board.

[0013] As a preferred solution of the present invention, the high-frequency amplifier power board includes: a rough-machined power amplifier unit and a fine-machined power amplifier unit.

[0014] To implement the above technical solution, the adjustable DC regulated power supply output by the high-frequency discharge power supply board is respectively connected to the rough machining power amplifier unit and the fine machining power amplifier unit, and the rough machining control signal and the fine machining control signal output by the intelligent high-frequency oscillation board are respectively connected to the rough machining power amplifier unit and the fine machining power amplifier unit for controlling the corresponding MOS tubes inside the power amplifier unit. According to different machining conditions, the number of MOS tubes opened at the same time can be controlled by the control signal output by the intelligent high-frequency oscillation board, thereby achieving more precise control of the machining process. The machining pulse power signal generated after the MOS tube control is respectively connected to the workpiece end and the molybdenum wire end to generate the discharge process required for machining.

[0015] As a preferred solution of the present invention, the intelligent processing parameter control board includes: a power supply interface, a 422 communication interface, a host computer interface, an ARM core processing unit, and a human-computer interaction interface.

[0016] To implement the above technical solution, an external +12V power supply is provided to the intelligent processing parameter control board through the power supply interface. The 422 communication interface is mainly used to provide the relevant electrical parameters generated by the intelligent processing parameter control board to the intelligent high-frequency oscillation board. The host computer interface mainly realizes the status information interaction between the intelligent processing parameter control board and the host computer. The human-computer interaction interface realizes the input and display of relevant processing parameters through the LCD touch screen. The input relevant information is processed by the AEM core processing unit inside the board and then interacts with other boards through the above-mentioned relevant interfaces.

[0017] As a preferred solution of the present invention, the intelligent high-frequency oscillation board includes: a 422 communication interface, an I / O signal input interface, and an FPGA.

[0018] To implement the above technical solution, the intelligent processing parameter control board inputs the generated electrical processing parameters into the FPGA core processing unit in the intelligent high-frequency oscillation board through the 422 communication interface. The FPGA core processing unit performs logic processing after combining the relevant buttons, limits, commutation and other signals received by the I / O signal input interface, and generates the relevant water pump frequency conversion signals, wire transport frequency conversion signals, sampling voltage switching signals, rough processing pulse signals, rough processing switch signal groups, fine processing pulse signals and fine processing switch signal groups required for processing, and transmits the above processing signals to the water pump frequency converter, wire transport frequency converter, high-frequency discharge power board, and high-frequency amplifier power board respectively for controlling the actions of the corresponding execution motors or equipment, thereby achieving the desired processing effect.

[0019] As a preferred solution of the present invention, the drive board includes: a core processing unit, an internal isolated power management unit, a host computer information interaction interface, a Z-axis memory and positioning function processing unit, a Z-axis driver interface, an X-axis driver interface, a Y-axis driver interface, a U / V-axis driver interface, a handwheel signal processing unit, a sampling signal input processing unit, a limit and five-axis alarm signal processing unit, a centering and broken wire signal processing, an emergency stop and start-up wire signal processing, and other I / O signal processing units.

[0020] To implement the above technical solution, the various power supplies required inside the single board are input into the internal isolated power management unit through the power supply interface to generate the relevant secondary power supplies required for the single board to work. The handwheel pulse and axis selection signals are isolated and transformed by the handwheel signal processing unit and then sent to the FPGA for logic processing. The sampling pulse signal output by the high-frequency fine sampling board is isolated and filtered by the sampling signal processing unit and then forwarded to the host computer through the host computer information interaction interface to generate the axis feed pulse signal. The limit sensor and the five-axis servo driver output the limit and the related alarm signals of the five axes, the centering and wire breakage signals output by the high-frequency fine sampling board, and the other I / O signals output by the machine tool are processed by the interface circuit and sent to the FPGA for logic combination processing. The emergency stop and wire-starting signals generated by the logical combination of the alarm signals are sent to the intelligent high-frequency oscillation board through the corresponding interface. The U / V-axis drive signals and other I / O signals sent by the host computer are input into the core processing unit through the host computer information interaction interface. The encoder position signals and drive pulse signals of the X, Y, Z, U, and V axes are respectively realized through the X-axis driver interface, Y-axis driver interface, Z-axis driver interface, and UV-axis driver interface in the figure to realize the information interaction function with the core processing unit. The I / O signals related to the Z-axis memory and positioning function are input into the DSP processor of the core processing unit together with the Z-axis encoder signal for processing and then stored in the FLASH memory inside the board to realize the power-off memory function of the Z-axis related position information.

[0021] In summary, the present invention has the following beneficial effects: the upgraded and optimized high-frequency fine sampling board can distinguish and collect the machining voltage signals of rough and fine machining, and the judgment on whether the discharge process occurs in the machining gap is more accurate, especially the sampling of discharge pulses with a pulse width of less than 1us is more accurate, which can improve the machining speed in the fine machining stage and avoid the stagnation of axis feed due to misjudgment of short circuit, etc.; the intelligent high-frequency oscillation board can improve the real-time performance of the oscillation waveform, and the high-frequency discharge power supply board can make the voltage of discharge machining accurately adjustable, and improve the frequency of discharge, so that the metal wire electrode and the workpiece can be discharged according to the theoretical waveform, so that the surface roughness of the workpiece is better, the machining efficiency of the workpiece is higher, and it has a more intelligent alarm function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the structure of a conventional discharge power supply and motion control device;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 is a block diagram of the high frequency fine sampling board of the present invention;

[0026] Figure 4 It is a block diagram of the high frequency discharge power supply board of the present invention;

[0027] Figure 5 It is a block diagram of the high frequency amplification power board of the present invention;

[0028] Figure 6 It is a block diagram of the intelligent processing parameter control board in the present invention;

[0029] Figure 7 It is a block diagram of the intelligent high-frequency oscillation board in the present invention;

[0030] Figure 8 is a block diagram of the driving board in the present invention;

[0031] In the figure: 1 graphic file; 2 axis feed drive module; 3 high-frequency discharge module; 5 cutting fluid circulation system; 6 servo motor controller; 7 wire feeding motor controller; 8 high-frequency amplifier power board; 9 axis feed motion module; 10 wire feeding mechanism; 11 electronic pulse handwheel; 12 discharge mechanism; 13 high-frequency fine sampling board; 14 drive board; 15 intelligent processing parameter control board; 16 intelligent high-frequency oscillation board; 17 high-frequency discharge power board. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example

[0034] See also Figure 1-8The present invention provides a discharge power supply and motion control method and device, including a control device and a control method. The control device includes: a host computer control system, a discharge and motion control system, and an actuator. The host computer control system includes: a graphic file 1, an axis feed drive module 2, and a high-frequency discharge module 3. The discharge and motion control system includes: an intelligent processing parameter control board 15, an intelligent high-frequency oscillation board 16, a high-frequency amplification power board 8, a high-frequency discharge power board 17, a drive board 14, a high-frequency fine sampling board 13, a cutting fluid circulation system 5, a servo motor controller 6, and a wire-feeding motor controller 7. The actuator includes: Axis feed motion module 9, wire feeding mechanism 10, electronic pulse handwheel 11, discharge mechanism 12, the control method is that after the user edits the graphic file 1 and selects the processing index, the high-frequency discharge module 3 in the upper computer control system sends the group number corresponding to the processing parameter to the intelligent processing parameter control board 15, the intelligent processing parameter control board 15 generates the electrical parameters required for processing, and then sends them to the intelligent high-frequency oscillation board 16 through a specific communication protocol. The high-frequency oscillation board oscillates the waveform required for high-frequency processing, and then sends the oscillated high-frequency processing signal to the high-frequency amplifier power board 8, and finally forms the voltage required for processing between the metal wire electrode and the workpiece.

[0035] The high frequency fine sampling board 13 includes: a roughing sampling circuit, a fine processing sampling circuit, a sampling voltage switching circuit, a V / F conversion circuit 1, a V / F conversion circuit 2, a driving feed pulse switching circuit, and a state monitoring and processing circuit. Roughing and fine processing use two different sets of sampling circuits and V / F conversion circuits to complete the processing and V / F conversion of the input sampling voltage signal. The frequency ranges of the input sampling voltages that are appropriately processed by the two sets of sampling circuits and V / F conversion circuits are different. The roughing sampling circuit and the V / F conversion circuit 1 are suitable for processing pulse signals with a pulse power supply width between tens and one hundred microseconds. The fine processing sampling circuit The circuit and the V / F conversion circuit 2 are suitable for processing pulse signals with a pulse power width between several hundred nanoseconds and ten microseconds. The sampling voltage ranges inside the two groups of sampling circuits can be adjusted by the sampling voltage switching instructions issued by the intelligent high-frequency oscillation board 16. The selection and switching of the two groups of sampling circuits are completed by the coarse and fine sampling switching instructions issued by the intelligent high-frequency oscillation board 16. The driving feed pulses output by the high-frequency fine sampling board 13 are respectively sent to the intelligent high-frequency oscillation board 16 and the driving board 14 to realize the monitoring of the discharge process and generate the pulse signals required for servo feed. In addition, the high-frequency fine sampling board 13 also has the functions of broken wire detection and alarm, and centering.

[0036] The high-frequency discharge power supply board 17 includes: an adjustable output voltage value switching circuit, a 60V to 100V adjustable DC regulated power supply circuit, a +12V regulated power supply circuit, and a status monitoring and processing circuit. The input is a three-phase 200V AC power supply, and the output is a DC regulated power supply with a voltage range of 60V to 100V. The maximum output power of the DC regulated power supply can reach 1.5KW, and the operating frequency is 70KHz. The regulated power supply voltage value output by the high-frequency discharge power supply board 17 can be input according to the adjustable power supply voltage switching instruction output by the intelligent high-frequency oscillation board 16. The signal is adjusted to ensure that the power supplied to the high-frequency amplifier power board 8 can meet the processing requirements of different types of workpieces, so that the metal wire electrode and the workpiece can be discharged according to the ideal waveform, thereby improving the surface quality of the processing. The high-frequency discharge power board 17 generates a +12V DC regulated power supply for its own control circuit part. The high-frequency discharge power board 17 can also monitor the real-time status of the adjustable DC regulated power supply output to the high-frequency amplifier power board 8 and output over-temperature, over-current, and over-voltage alarm signals to the intelligent high-frequency oscillation board 16.

[0037] The high-frequency amplifier power board 8 includes: a rough machining power amplifier unit, and a fine machining power amplifier unit. The adjustable DC regulated power supply output by the high-frequency discharge power supply board 17 is respectively connected to the rough machining power amplifier unit and the fine machining power amplifier unit. The rough machining control signal and the fine machining control signal output by the intelligent high-frequency oscillation board are respectively connected to the rough machining power amplifier unit and the fine machining power amplifier unit for controlling the corresponding MOS tubes inside the power amplifier unit. According to different machining conditions, the number of MOS tubes opened at the same time can be controlled by the control signal output by the intelligent high-frequency oscillation board 16, so as to achieve more precise control of the machining process. The machining pulse power signal generated after the MOS tube control is respectively connected to the workpiece end and the molybdenum wire end to generate the discharge process required for machining.

[0038] The intelligent processing parameter control board 15 includes: a power supply interface, a 422 communication interface, a host computer interface, an ARM core processing unit, and a human-computer interaction interface. The external +12V power supply is provided to the intelligent processing parameter control board 15 through the power supply interface. The 422 communication interface is mainly used to provide the relevant electrical parameters generated by the intelligent processing parameter control board 15 to the intelligent high-frequency oscillation board 16. The host computer interface mainly realizes the state information interaction between the intelligent processing parameter control board 15 and the host computer. The human-computer interaction interface realizes the input and display of relevant processing parameters through the LCD touch screen. The input relevant information is processed by the AEM core processing unit inside the board and then interacts with other boards through the above-mentioned relevant interfaces.

[0039] The intelligent high-frequency oscillation board 16 includes: a 422 communication interface, an I / O signal input interface, and an FPGA. The intelligent processing parameter control board 15 inputs the generated electrical processing parameters into the FPGA core processing unit in the intelligent high-frequency oscillation board 16 through the 422 communication interface. The FPGA core processing unit performs logic processing after combining the relevant buttons, limits, commutation and other signals received by the I / O signal input interface and generates the relevant water pump frequency conversion signals, wire transport frequency conversion signals, sampling voltage switching signals, rough processing pulse signals, rough processing switch signal groups, fine processing pulse signals and fine processing switch signal groups required for processing, and transmits the above processing signals to the water pump frequency converter, wire transport frequency converter, high-frequency discharge power board 17, and high-frequency amplifier power board 8 respectively for controlling the corresponding execution motors or equipment actions, thereby achieving the desired processing effect.

[0040] The drive board 14 includes: a core processing unit, an internal isolation power management unit, a host computer information interaction interface, a Z-axis memory and positioning function processing unit, a Z-axis driver interface, an X-axis driver interface, a Y-axis driver interface, a U / V-axis driver interface, a handwheel signal processing unit, a sampling signal input processing unit, a limit and five-axis alarm signal processing unit, a centering and broken wire signal processing, an emergency stop and start-up wire signal processing, and other I / O signal processing units. The various power supplies required inside the single board are input to the internal isolation power management unit through the power supply interface to generate the relevant secondary power supplies required for the single board to work. The handwheel pulse and axis selection signals are isolated and transformed by the handwheel signal processing unit and then sent to the FPGA for logic processing. The sampling pulse signal output by the high-frequency fine sampling board 13 is isolated and filtered by the sampling signal processing unit and then forwarded to the host computer through the host computer information interaction interface to generate the axis feed pulse signal. The limit sensor and the limit and five outputs of the five-axis servo driver The relevant alarm signals of the axis, the centering and wire breaking signals output by the high-frequency fine sampling board 13, and the other I / O signals output by the machine tool are sent to the FPGA for logic combination processing after being processed by the interface circuit. The emergency stop and wire start signals generated by the logical combination of the status and alarm signals are sent to the intelligent high-frequency oscillation board 16 through the corresponding interface. The U / V axis drive signals and other I / O signals issued by the host computer are input into the core processing unit through the host computer information interaction interface. The encoder position signals and drive pulse signals of the X, Y, Z, U, and V axes are respectively realized through the X-axis driver interface, Y-axis driver interface, Z-axis driver interface, and UV-axis driver interface in the figure to realize the information interaction function with the core processing unit. The I / O signals related to the Z-axis memory and positioning function are input into the DSP processor of the core processing unit together with the Z-axis encoder signal for processing and then stored in the FLASH memory inside the single board to realize the power-off memory function of the Z-axis related position information.

[0041] In the embodiment of the present invention, the upgraded and optimized high-frequency fine sampling board 13 can distinguish and collect the machining voltage signals of rough and fine machining, and the judgment on whether the discharge process occurs in the machining gap is more accurate, especially the sampling of discharge pulses with a pulse width of less than 1us is more accurate, which can improve the machining speed in the fine machining stage and avoid the stagnation of axis feed due to misjudgment of short circuit, etc.; the intelligent high-frequency oscillation board 16 can improve the real-time performance of the oscillation waveform, and the high-frequency discharge power supply board 17 can make the voltage of discharge machining accurately adjustable, and improve the frequency of discharge, so that the metal wire electrode and the workpiece can be discharged according to the theoretical waveform, so that the surface roughness of the workpiece is better, the machining efficiency of the workpiece is higher, and it has a more intelligent alarm function.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Finally, it should be noted that the above description is only 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 can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A discharge power supply and motion control device, characterized in that: The control device includes: a host computer control system, a discharge and motion control system, and an actuator. The host computer control system includes: a graphic file, an axis feed drive module, and a high-frequency discharge module. The discharge and motion control system includes: an intelligent processing parameter control board, an intelligent high-frequency oscillation board, a high-frequency amplification power board, a high-frequency discharge power board, a drive board, a high-frequency fine sampling board, a cutting fluid circulation system, a servo motor controller, and a wire feeding motor controller. The actuator includes: an axis feed motion module, a wire feeding mechanism, an electronic pulse handwheel, and a discharge mechanism. The control method of the control device is that the user edits the graphic file and selects After the processing indicators are obtained, the high-frequency discharge module in the host computer control system sends the group number corresponding to the processing parameters to the intelligent processing parameter control board, and the intelligent processing parameter control board generates the electrical parameters required for processing, and then sends them to the intelligent high-frequency oscillation board through a specific communication protocol. The high-frequency oscillation board oscillates the waveform required for high-frequency processing, and then sends the oscillated high-frequency processing signal to the high-frequency amplification power board, and finally forms the voltage required for processing between the metal wire electrode and the workpiece. The high-frequency fine sampling board includes: a rough processing sampling circuit, a fine processing sampling circuit, a sampling voltage switching circuit, a V / F conversion circuit 1, and a V / F conversion circuit. The high-frequency discharge power supply board includes: an adjustable output voltage value switching circuit, a 60V to 100V adjustable DC voltage-stabilized power supply circuit, a +12V voltage-stabilized power supply circuit, a state monitoring and processing circuit, the high-frequency amplification power board includes: a roughing power amplification unit, and a finishing power amplification unit, the intelligent processing parameter control board includes: a power supply interface, a 422 communication interface, a host computer interface, an ARM core processing unit, and a human-computer interaction interface, the intelligent high-frequency oscillation board includes: a 422 communication interface, an I / O signal input interface, and an FPGA, and the intelligent The process parameter control board inputs the generated electrical machining parameters into the FPGA core processing unit in the intelligent high-frequency oscillation board through the 422 communication interface. The FPGA core processing unit performs logic processing after combining the relevant buttons, limit and commutation signals received by the I / O signal input interface, and generates the relevant water pump frequency conversion signals, wire transport frequency conversion signals, sampling voltage switching signals, rough machining pulse signals, rough machining switch signal groups, fine machining pulse signals and fine machining switch signal groups required for machining, and transmits the above machining signals to the water pump frequency converter, wire transport frequency converter, high-frequency discharge power supply board and high-frequency amplifier power supply board respectively for controlling the actions of the corresponding execution equipment.

2. A discharge power supply and motion control device according to claim 1, characterized in that: The drive board includes: a core processing unit, an internal isolated power management unit, a host computer information interaction interface, a Z-axis memory and positioning function processing unit, a Z-axis driver interface, an X-axis driver interface, a Y-axis driver interface, a U / V-axis driver interface, a handwheel signal processing unit, a sampling signal input processing unit, a limit and five-axis alarm signal processing unit, a centering and broken wire signal processing, and an emergency stop and start-up wire signal processing.

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