CN113458519A - Discharge power supply and motion control method and device - Google Patents
Discharge power supply and motion control method and device Download PDFInfo
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- CN113458519A CN113458519A CN202110848088.2A CN202110848088A CN113458519A CN 113458519 A CN113458519 A CN 113458519A CN 202110848088 A CN202110848088 A CN 202110848088A CN 113458519 A CN113458519 A CN 113458519A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/14—Electric circuits specially adapted therefor, e.g. power supply
- B23H7/16—Electric circuits specially adapted therefor, e.g. power supply for preventing short circuits or other abnormal discharges by altering machining parameters using adaptive control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M11/00—Power conversion systems not covered by the preceding groups
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses a discharge power supply and motion control method and device, comprising a control device and a control method, wherein the control device comprises: upper computer control system, discharge and motion control system and actuating mechanism, control method is good for the user edits behind the figure file and the selected processing index, among the upper computer control system high frequency discharge module sends the group number that machining parameter corresponds for intelligent machining parameter control panel, the required electrical parameter of intelligence machining parameter control panel generation processing sends through specific communication protocol afterwards intelligent high frequency oscillation board, the high frequency oscillation board vibrates out the wave form that high frequency machining needs, then with the high frequency processing signal transmission that the oscillation was accomplished to high frequency amplification power board, finally at wire electrode and work piece formation processing required voltage. The workpiece obtained by the method has better surface roughness, higher processing efficiency and more intelligent alarm function.
Description
Technical Field
The invention relates to the technical field of an electric discharge machine tool, in particular to an electric discharge power supply and a motion control method and device.
Background
In general, in order to improve the surface roughness of a finished product manufactured by electric discharge machining, a plurality of steps having different machining conditions are performed, first, a desired contour is roughly formed on a workpiece, then, an excessive material is removed from a cut surface with high precision, and finally, finish machining is performed again to improve the roughness of the cut surface. The power supply system of the electric discharge machine during rough machining supplies a pulse power supply to a machining gap between a wire electrode and a workpiece, the pulse power supply has a width of between tens and a hundred microseconds, a voltage peak of between about 60V and 100V, and a duty ratio of between 1:5 and 1: 10. The power supply system of the electric discharge machine during the finish machining provides a pulse power supply width between hundreds of nanoseconds and ten microseconds for a machining gap between a wire electrode and a workpiece, a voltage peak value between about 60V and 100V, and a duty ratio between 1:10 and 1: 15. The discharge detection device in the discharge processing machine tool is used for collecting the voltage pulse signals and judging whether the discharge phenomenon occurs between the metal wire motor and the workpiece in real time through the collected voltage pulse signals. The discharge detection device converts the acquired and processed voltage pulse signals into frequency signals through a V/F conversion circuit and transmits the frequency signals to a servo feeding system of the discharge machining machine tool, the servo feeding system of the machine tool determines the movement speed of a feeding shaft of the machine tool in the discharge machining process through the frequency signals, the short circuit of a workpiece and a metal wire motor and the wire breakage can be caused when the feeding shaft moves too fast, and the efficiency of machining the workpiece can be reduced when the feeding shaft moves too slowly. Therefore, the performance of the discharge detection device not only directly influences the efficiency of the whole discharge machining process, but also determines whether the discharge machining machine can reliably work for a long time on the premise of not generating short circuit and wire breakage. The discharge voltage is digitally and accurately adjusted, so that the machining process can be more controllable, the requirements of the process can be better met, the efficiency is emphasized in rough machining, the required energy is higher, the surface quality is emphasized in finish machining, and therefore the discharge energy output needs to be finely controlled. The discharge voltage is digitalized and accurately adjustable, high efficiency and high quality can be met, and irregular voltage waveforms required by machining can be released quickly and accurately.
A conventional discharge power supply and motion control device is shown in fig. 1, which includes a host control system, a discharge and motion control system, and an actuator. After a user edits a graphic file and selects a machining index, a high-frequency discharge module in an upper computer control system calls a discharge parameter in a database, a waveform required by high-frequency machining is oscillated by a board card, a signal of the high-frequency machining is sent to a high-frequency square high-power board, and finally a pulse voltage required by the machining is formed between a metal wire electrode and a workpiece; meanwhile, the upper computer control system receives a sampling signal from the sampling plate, the sampling signal feeds back the normal discharge, short circuit, no-load and other states in the machining process to the upper computer control system, and based on the sampling signal, the upper computer sends a pulse signal of motion feeding to the servo motor controller so as to drive the motion module to feed; the upper computer control system can drive the cutting fluid circulating system to be opened and closed according to the setting of machining, and controls the steering and the frequency of the wire moving motor, so that the smooth proceeding of the machining process is ensured.
As described above, the conventional discharge power supply and motion control device cannot adjust the discharge voltage, so that an ideal machining parameter waveform cannot be loaded between the wire electrode and the workpiece through the high-frequency square high-power plate, thereby limiting the upper limit of the machining quality. In addition, the conventional discharge detection device has inaccurate judgment on whether a discharge process occurs in real time, so that the machining efficiency and the roughness of a machined surface of a workpiece are influenced. The waveform required by high-frequency processing is oscillated by the clamping plate, the real-time property is deficient, and signal attenuation and distortion caused by long transmission distance exist, so that the processing quality is further influenced. Meanwhile, the accuracy of taper machining is affected due to the lack of position control on the Z axis and the absence of positioning and automatic homing.
Disclosure of Invention
The present invention is directed to a discharge power supply and a motion control method and apparatus to solve the problems set forth in the background art.
In order to solve the technical problems, the invention provides the following technical scheme:
a discharge power supply and motion control method and device comprises a control device and a control method, wherein the control device comprises: host computer control system, discharge and motion control system and actuating mechanism, host computer control system includes: a graphic file, a spindle feed drive module, and a high frequency discharge module, the discharge and motion control system comprising: intelligence processing parameter control panel, intelligent high frequency oscillation board, high-frequency amplification power board, high-frequency discharge power supply board, drive plate, the meticulous sampling board of high frequency, cutting fluid circulation system, servo motor controller and walk a machine controller, actuating mechanism includes: the control method comprises the steps that after a user edits the graphic file and selects machining indexes, the high-frequency discharge module in the upper computer control system sends a group number corresponding to machining parameters to the intelligent machining parameter control board, the intelligent machining parameter control board generates electrical parameters required for machining, then sends the electrical parameters to the intelligent high-frequency oscillation board through a specific communication protocol, the high-frequency oscillation board oscillates waveforms required for high-frequency machining, then sends high-frequency machining signals finished by oscillation to the high-frequency amplification power board, and finally forms machining required voltage at a metal wire electrode and a workpiece.
By adopting the upgraded and optimized high-frequency fine sampling plate, the rough machining voltage signal and the fine machining voltage signal can be acquired differently, the judgment on whether the discharge process occurs in the machining gap is more accurate, particularly the sampling on the discharge pulse with the pulse width below 1us is more accurate, the machining speed in the fine machining stage can be increased, and the problem that the shaft feeding is not stopped due to misjudgment on short circuit and the like is solved; the intelligent high-frequency oscillation plate can improve the real-time performance of oscillation waveforms, the high-frequency discharge power supply plate can enable the voltage of discharge machining to be accurately adjustable, the discharge frequency is improved, discharge machining can be conducted between a metal wire electrode and a workpiece according to the theoretical waveform, the surface roughness of the workpiece is better, the machining efficiency of the workpiece is higher, and meanwhile the intelligent alarm function is achieved.
As a preferable aspect of the present invention, the high frequency fine sampling plate includes: rough machining sampling circuit, finish machining sampling circuit, sampling voltage switching circuit, V/F conversion circuit 1, V/F conversion circuit 2, drive feed pulse switching circuit, and state monitoring and processing circuit.
The technical scheme is realized, the rough machining and the finish machining adopt two groups of different sampling circuits and V/F conversion circuits to complete the processing and the V/F conversion of input sampling voltage signals, the frequency ranges of the input sampling voltages which are correspondingly and properly processed by the two groups of sampling circuits and the V/F conversion circuits are different, the rough machining sampling circuits and the V/F conversion circuits 1 are suitable for processing pulse signals with the pulse power width between dozens of microseconds and one hundred microseconds, the finish machining sampling circuits and the V/F conversion circuits 2 are suitable for processing pulse signals with the pulse power width between hundreds of nanoseconds and ten microseconds, the sampling voltage ranges inside the two groups of sampling circuits can be adjusted through sampling voltage switching instructions sent by an intelligent high-frequency oscillating plate, and the selection and the switching of the two groups of sampling circuits are completed through rough and fine sampling switching instructions sent by the intelligent high-frequency oscillating plate, the drive feeding pulse output by the high-frequency fine sampling plate is respectively sent to the intelligent high-frequency oscillation plate and the drive plate to realize the monitoring of the discharging process and generate a pulse signal required by servo feeding, and in addition, the high-frequency fine sampling plate also has the functions of wire breakage detection, alarming, centering and the like.
As a preferable aspect of the present invention, the high-frequency discharge power supply board includes: the device comprises an adjustable output voltage value switching circuit, a 60V to 100V adjustable direct current stabilized power supply circuit, a +12V stabilized power supply circuit and a state monitoring and processing circuit.
The technical scheme is realized, the input is a three-phase 200V alternating current power supply, the output is a direct current stabilized power supply with a limited and adjustable voltage range of 60V to 100V, the output power of the direct current stabilized power supply can reach 1.5KW at most, the working frequency is 70KHz, the voltage value of a stabilized power supply output by a high-frequency discharge power supply board can be adjusted according to an adjustable power supply voltage switching instruction input signal output by an intelligent high-frequency oscillating board, the power supply provided for the high-frequency amplification power supply board can meet the processing requirements of different types of workpieces, so that discharge processing can be performed between a metal wire electrode and the workpieces according to an ideal waveform, the surface quality of processing is improved, one path of +12V direct current stabilized power supply generated inside the high-frequency discharge power supply board is used for a control circuit part of the high-frequency discharge power supply board, the high-frequency discharge power supply board can also monitor the real-time state of the adjustable direct current stabilized power supply output to the high-frequency amplification power supply board and can perform over-temperature monitoring, And overcurrent and overvoltage alarm signals are output to the intelligent high-frequency oscillating plate.
As a preferable aspect of the present invention, the high-frequency amplification power board includes: a rough machining power amplification unit and a finish machining power amplification unit.
Realize above-mentioned technical scheme, the adjustable D.C. regulated power supply of high frequency discharge power supply board output is connected to rough machining power amplification unit and finish machining power amplification unit respectively, the rough machining control signal of intelligence high frequency oscillation version output, finish machining control signal is connected to rough machining power amplification unit and finish machining power amplification unit respectively and is used for controlling the inside MOS pipe that corresponds of power amplification unit, according to the difference of processing condition, can control the quantity of the MOS pipe of opening simultaneously through the control signal of intelligence high frequency oscillation board output, thereby realize the more meticulous control to the course of working, the processing pulse power supply signal that generates after MOS pipe control is connected to work piece end and molybdenum wire end respectively and is used for producing the electric discharge process that the processing needs.
As a preferable scheme of the present invention, the intelligent processing parameter control board includes: the system comprises a power supply interface, a 422 communication interface, an upper computer interface, an ARM core processing unit and a man-machine interaction interface.
According to the technical scheme, an external +12V power supply is provided for the intelligent processing parameter control panel through the power supply interface, the 422 communication interface is mainly used for providing relevant electric parameters generated by the intelligent processing parameter control panel for the intelligent high-frequency oscillating panel, the upper computer interface mainly realizes state information interaction between the intelligent processing parameter control panel and the upper computer, the human-computer interaction interface realizes input and display of relevant processing parameters through the LCD touch display screen, and the input relevant information is processed by the AEM core processing unit inside the panel and then is subjected to information interaction with other panel cards through the relevant interfaces.
As a preferable aspect of the present invention, the intelligent high-frequency oscillation plate includes: 422 communication interface, I/O signal input interface, and FPGA.
According to the technical scheme, the intelligent machining parameter control board inputs generated electric machining parameters into an FPGA core processing unit in the intelligent high-frequency oscillation board through a 422 communication interface, the FPGA core processing unit carries out logic processing after combining signals such as relevant keys, limiting signals and reversing signals received by an I/O signal input interface and generates relevant water pump variable frequency signals required by machining, wire conveying variable frequency signals, sampling voltage switching signals, rough machining pulse signals, rough machining switch signal groups, finish machining pulse signals and finish machining switch signal groups, the machining signals are respectively conveyed to a water pump frequency converter, a wire conveying frequency converter, a high-frequency discharge power supply board and a high-frequency amplification power board, the high-frequency amplification power supply board is used for controlling actions of corresponding execution motors or equipment, and therefore the expected machining effect is achieved.
As a preferable aspect of the present invention, the driving plate includes: the device comprises a core processing unit, an internal isolation power supply management unit, an upper 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 hand wheel signal processing unit, a sampling signal input processing unit, a limiting and five-axis alarm signal processing unit, a centering and wire breaking signal processing unit, an emergency stop and wire starting and conveying signal processing unit and other I/O signal processing units.
The technical scheme is realized, each path of power supply required in the veneer is input into an internal isolation power supply management unit through a power supply interface and is used for generating a related secondary power supply required by the veneer work, signals such as hand wheel pulse and shaft selection are isolated and converted by a hand wheel signal processing unit and then are sent to an FPGA for logic processing, sampling pulse signals output by a high-frequency fine sampling plate are isolated and filtered by a sampling signal processing unit and then are forwarded to an upper computer through an upper computer information interaction interface for generating shaft feeding pulse signals, limit and five-shaft related alarm signals output by a limit sensor and a five-shaft servo driver, centering and wire breaking signals output by the high-frequency fine sampling plate, other I/O signals output by a machine tool and the like are processed by an interface circuit and then are sent to the FPGA for logic combination processing, and emergency stop and wire opening signals and the like generated after the logic combination of the state and alarm signals are sent to an intelligent high-frequency oscillating plate through a corresponding interface, U/V axis driving signals and other I/O signals sent by an upper computer are input into a core processing unit through an upper computer information interaction interface, an X, Y, Z, U, V axis encoder position signal and a driving pulse signal realize an information interaction function with the core processing unit through an X axis driver interface, a Y axis driver interface, a Z axis driver interface and a UV axis driver interface in the figure respectively, and a Z axis memory and positioning function realizes that related I/O signals and Z axis encoder signals are input into a DSP processor of the core processing unit together for processing and then are stored into a FLASH memory inside a single board to realize a power-off memory function of Z axis related position information.
In conclusion, the invention has the following beneficial effects: the high-frequency fine sampling plate after upgrading and optimization can be used for collecting rough machining voltage signals and fine machining voltage signals in a distinguishing mode, the judgment on whether the discharge process occurs in the machining gap is more accurate, particularly, the discharge pulse with the pulse width of less than 1us is more accurately sampled, the machining speed in the fine machining stage can be increased, and the problem that shaft feeding is not stopped due to misjudgment on short circuit and the like is avoided; the intelligent high-frequency oscillation plate can improve the real-time performance of oscillation waveforms, the high-frequency discharge power supply plate can enable the voltage of discharge machining to be accurately adjustable, the discharge frequency is improved, discharge machining can be conducted between a metal wire electrode and a workpiece according to the theoretical waveform, the surface roughness of the workpiece is better, the machining efficiency of the workpiece is higher, and meanwhile the intelligent alarm function is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic configuration diagram of a conventional discharge power supply and motion control apparatus;
FIG. 2 is a schematic structural view of the present invention as a whole;
FIG. 3 is a block diagram of a high frequency fine sampling plate according to the present invention;
FIG. 4 is a block diagram of a high frequency discharge power supply board according to the present invention;
FIG. 5 is a block diagram of a high frequency amplification power board in the present invention;
FIG. 6 is a block diagram of an intelligent process parameter control panel of the present invention;
FIG. 7 is a block diagram of an intelligent high frequency oscillation plate according to the present invention;
FIG. 8 is a block diagram of a drive plate in the present invention;
in the figure: 1, a graphic file; 2, a shaft feed driving module; 3 a high-frequency discharge module; 5, a cutting fluid circulating system; 6 servo motor controller; 7 a wire moving motor controller; 8 high-frequency amplification power plate; a 9-axis feed motion module; 10 a wire feeding mechanism; 11 an electronic pulse hand wheel; 12 a discharge mechanism; 13 high-frequency fine sampling plate; 14 driving a board; 15 intelligent processing parameter control board; 16 intelligent high-frequency oscillating plate; 17 high-frequency discharge power supply board.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-8, the present invention provides a discharge power supply and motion control method and apparatus, including a control apparatus and a control method, the control apparatus including: host computer control system, discharge and motion control system and actuating mechanism, host computer control system includes: a graphic file 1, a shaft feed driving module 2, and a high frequency discharge module 3, the discharge and motion control system comprising: intelligence processing parameter control panel 15, intelligent high frequency oscillation board 16, high frequency amplification power board 8, high frequency discharge power supply board 17, drive plate 14, the meticulous sampling board of high frequency 13, cutting fluid circulation system 5, servo motor controller 6 and walk a motor controller 7, actuating mechanism includes: the control method comprises the steps that after a user edits a graphic file 1 and selects a machining index, a high-frequency discharge module 3 in an upper computer control system sends a group number corresponding to machining parameters to an intelligent machining parameter control board 15, the intelligent machining parameter control board 15 generates electrical parameters required by machining, the electrical parameters are sent to an intelligent high-frequency oscillating board 16 through a specific communication protocol, the high-frequency oscillating board oscillates waveforms required by high-frequency machining, high-frequency machining signals after oscillation are sent to a high-frequency amplifying power board 8, and finally voltages required by machining are formed on a metal wire electrode and a workpiece.
The high-frequency fine sampling plate 13 includes: rough machining sampling circuit, finish machining sampling circuit, sampling voltage switching circuit, V/F conversion circuit 1, V/F conversion circuit 2, drive feed pulse switching circuit, state monitoring and processing circuit, wherein two groups of different sampling circuits and V/F conversion circuits are adopted for rough machining and finish machining to complete processing and V/F conversion of input sampling voltage signals, the frequency ranges of the input sampling voltages which are properly processed and correspond to the two groups of sampling circuits and the V/F conversion circuits are different, the rough machining sampling circuits and the V/F conversion circuits 1 are suitable for processing pulse signals with pulse power widths ranging from dozens of microseconds to one hundred microseconds, the finish machining sampling circuits and the V/F conversion circuits 2 are suitable for processing pulse signals with pulse power widths ranging from hundreds of nanoseconds to ten microseconds, and the sampling voltage ranges in the two groups of sampling circuits can be transmitted by the intelligent high-frequency oscillating plate 16 The switching instruction is adjusted, the selection switching of the two groups of sampling circuits is completed through a coarse and fine sampling switching instruction sent by the intelligent high-frequency oscillating plate 16, the driving feeding pulse output by the high-frequency fine sampling plate 13 is respectively sent to the intelligent high-frequency oscillating plate 16 and the driving plate 14 to realize the monitoring of the discharging process and generate a pulse signal required by servo feeding, and in addition, the high-frequency fine sampling plate 13 also has the functions of wire breakage detection and alarm, centering and the like.
The high-frequency discharge power supply board 17 includes: an adjustable output voltage value switching circuit, a 60V to 100V adjustable DC stabilized power supply circuit, a +12V stabilized power supply circuit and a state monitoring and processing circuit, wherein the input is a three-phase 200V AC power supply, the output is a DC stabilized power supply with a limited adjustable voltage range from 60V to 100V, the maximum output power of the DC stabilized power supply can reach 1.5KW, the working frequency is 70KHz, the voltage value of a stabilized power supply output by a high-frequency discharge power supply board 17 can be adjusted according to an adjustable power supply voltage switching instruction input signal output by an intelligent high-frequency oscillating board 16, the power supply provided for the high-frequency amplifying power board 8 can meet the processing requirements of different types of workpieces, so that the metal wire electrode and the workpieces can be subjected to discharge processing according to an ideal waveform, the surface quality of the processing is improved, one path of +12V DC stabilized power supply generated in the high-frequency discharge power supply board 17 is used for a control circuit part of the high-frequency discharge power supply, the high-frequency discharge power supply board 17 can also monitor the real-time state of the adjustable direct current stabilized voltage power supply output to the high-frequency amplification power board 8 and output over-temperature, over-current and over-voltage alarm signals to the intelligent high-frequency oscillation board 16.
The high-frequency amplification power board 8 includes: rough machining power amplification unit, and finish machining power amplification unit, the adjustable constant voltage power supply of high frequency discharge power supply board 17 output is connected to rough machining power amplification unit and finish machining power amplification unit respectively, the rough machining control signal of intelligence high frequency oscillation version output, finish machining control signal is connected to rough machining power amplification unit and finish machining power amplification unit respectively and is used for controlling the inside MOS pipe that corresponds of power amplification unit, according to the difference of processing conditions, can control the quantity of the MOS pipe of opening simultaneously through the control signal of intelligence high frequency oscillation board 16 output, thereby realize more meticulous control to the course of working, the processing pulse power supply signal that generates after the control of MOS pipe is connected to work piece end and molybdenum wire end respectively and is used for producing the discharge process that processing needs.
The intelligent processing parameter control panel 15 includes: the power supply interface, 422 communication interface, the host computer interface, ARM core processing unit, the human-computer interaction interface, outside + 12V's power is provided to intelligent processing parameter control panel 15 through the power supply interface, 422 communication interface mainly is used for providing the relevant electric parameter that intelligent processing parameter control panel 15 generated for intelligent high frequency oscillation board 16, the host computer interface mainly realizes the state information interaction between intelligent processing parameter control panel 15 and the host computer, the human-computer interaction interface realizes the input and the demonstration of relevant processing parameter through LCD touch display screen, the interaction of information is carried out with other integrated circuit boards to the relevant information rethread above-mentioned relevant interface after the inside AEM core processing unit of plate of input process.
The intelligent high-frequency oscillation plate 16 includes: the intelligent processing parameter control board 15 inputs the generated electric processing parameters into an FPGA core processing unit in the intelligent high-frequency oscillating board 16 through the 422 communication interface, the FPGA core processing unit performs logic processing after combining relevant keys, limiting signals, reversing signals and the like received by the I/O signal input interface and generates relevant water pump frequency conversion signals, wire conveying frequency conversion signals, sampling voltage switching signals, rough processing pulse signals, rough processing switch signal groups, finish processing pulse signals and finish processing switch signal groups required by processing, and respectively conveys the processing signals to a water pump frequency converter, a wire conveying frequency converter, a high-frequency discharge power board 17 and a high-frequency amplification power board 8 for controlling the action of corresponding execution motors or equipment, thereby realizing the expected processing effect.
The drive plate 14 includes: the system comprises a core processing unit, an internal isolation power supply management unit, an upper 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 hand wheel signal processing unit, a sampling signal input processing unit, a limiting and five-axis alarm signal processing unit, a centering and broken wire signal processing unit, an emergency stop and wire start signal processing unit and other I/O signal processing units, wherein each path of power supply required in a single board is input into the internal isolation power supply management unit through a power supply interface and used for generating related secondary power supply required by the single board, signals such as hand wheel pulse and shaft selection are transmitted to an FPGA for logic processing after being isolated and converted by the hand wheel signal processing unit, sampling pulse signals output by a high-frequency fine sampling plate 13 are isolated and filtered by the sampling signal processing unit and then are transmitted to an upper computer through the upper computer information interaction interface and are used for generating shaft feeding Pulse signals, limit and five-axis related alarm signals output by a limit sensor and a five-axis servo driver, centering and wire breaking signals output by a high-frequency fine sampling plate 13, other I/O signals output by a machine tool and the like are processed by an interface circuit and then sent to an FPGA for logic combination processing, emergency stop and wire starting signals generated after the state and alarm signals are logically combined are sent to an intelligent high-frequency oscillating plate 16 through corresponding interfaces, U/V axis driving signals and other I/O signals sent by an upper computer are input to a core processing unit through an upper computer information interaction interface, and encoder position signals and driving pulse signals of an X, Y, Z, U, V axis realize the information interaction function with the core processing unit through an X-axis driver interface, a Y-axis driver interface, a Z-axis driver interface and a UV-axis driver interface in the figure respectively, the Z-axis memory and positioning function realizes the power-off memory function of the Z-axis related position information by inputting related I/O signals and Z-axis encoder signals into a DSP processor of the core processing unit for processing and then storing the processed signals into a FLASH memory inside the single board.
In the embodiment of the invention, the high-frequency fine sampling plate 13 after being upgraded and optimized can be used for collecting rough machining voltage signals and fine machining voltage signals in a distinguishing way, so that the judgment on whether a machining gap is subjected to a discharging process is more accurate, particularly, the sampling on the discharging pulse with the pulse width of less than 1us is more accurate, the machining speed in the fine machining stage can be increased, and the problem that the shaft feeding is not stopped due to misjudgment on short circuit and the like is avoided; the intelligent high-frequency oscillation plate 16 can improve the real-time performance of oscillation waveforms, the high-frequency discharge power supply plate 17 can enable the voltage of discharge machining to be accurately adjustable, the discharge frequency is improved, discharge machining can be conducted between a metal wire electrode and a workpiece according to the theoretical waveform, the surface roughness of the workpiece is better, the machining efficiency of the workpiece is higher, and meanwhile the intelligent alarm function is achieved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A discharge power supply and a motion control method and device are characterized by comprising a control device and a control method, wherein the control device comprises: host computer control system, discharge and motion control system and actuating mechanism, host computer control system includes: a graphic file, a spindle feed drive module, and a high frequency discharge module, the discharge and motion control system comprising: intelligence processing parameter control panel, intelligent high frequency oscillation board, high-frequency amplification power board, high-frequency discharge power supply board, drive plate, the meticulous sampling board of high frequency, cutting fluid circulation system, servo motor controller and walk a machine controller, actuating mechanism includes: the control method comprises the steps that after a user edits the graphic file and selects machining indexes, the high-frequency discharge module in the upper computer control system sends a group number corresponding to machining parameters to the intelligent machining parameter control board, the intelligent machining parameter control board generates electrical parameters required for machining, then sends the electrical parameters to the intelligent high-frequency oscillation board through a specific communication protocol, the high-frequency oscillation board oscillates waveforms required for high-frequency machining, then sends high-frequency machining signals finished by oscillation to the high-frequency amplification power board, and finally forms machining required voltage at a metal wire electrode and a workpiece.
2. The discharge power supply and motion control method and apparatus as claimed in claim 1, wherein the high frequency fine sampling plate comprises: rough machining sampling circuit, finish machining sampling circuit, sampling voltage switching circuit, V/F conversion circuit 1, V/F conversion circuit 2, drive feed pulse switching circuit, and state monitoring and processing circuit.
3. The discharge power supply and motion control method and apparatus as claimed in claim 2, wherein the high frequency discharge power supply board comprises: the device comprises an adjustable output voltage value switching circuit, a 60V to 100V adjustable direct current stabilized power supply circuit, a +12V stabilized power supply circuit and a state monitoring and processing circuit.
4. A discharge power supply and motion control method and apparatus according to claim 3, wherein said high-frequency amplification power board comprises: a rough machining power amplification unit and a finish machining power amplification unit.
5. The discharge power supply and motion control method and device according to claim 4, wherein the intelligent processing parameter control board comprises: the system comprises a power supply interface, a 422 communication interface, an upper computer interface, an ARM core processing unit and a man-machine interaction interface.
6. The discharge power supply and motion control method and apparatus as claimed in claim 5, wherein the intelligent high frequency oscillating plate comprises: 422 communication interface, I/O signal input interface, and FPGA.
7. The discharge power supply and motion control method and apparatus of claim 6, wherein said driving board comprises: the device comprises a core processing unit, an internal isolation power supply management unit, an upper 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 hand wheel signal processing unit, a sampling signal input processing unit, a limiting and five-axis alarm signal processing unit, a centering and wire breaking signal processing unit, an emergency stop and wire starting and conveying signal processing unit and other I/O signal processing units.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113927111A (en) * | 2021-10-16 | 2022-01-14 | 金美威(浙江)智能科技有限公司 | Slow-walking wire cutting pulse discharge circuit principle control system and method |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113927111A (en) * | 2021-10-16 | 2022-01-14 | 金美威(浙江)智能科技有限公司 | Slow-walking wire cutting pulse discharge circuit principle control system and method |
| CN113927111B (en) * | 2021-10-16 | 2024-05-28 | 金美威(浙江)智能科技有限公司 | Control system and method for pulse discharge loop of slow wire cutting |
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