CN202283621U - Intelligent energy-saving high-frequency pulse power supply for wire cutting - Google Patents
Intelligent energy-saving high-frequency pulse power supply for wire cutting Download PDFInfo
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- CN202283621U CN202283621U CN2011202781248U CN201120278124U CN202283621U CN 202283621 U CN202283621 U CN 202283621U CN 2011202781248 U CN2011202781248 U CN 2011202781248U CN 201120278124 U CN201120278124 U CN 201120278124U CN 202283621 U CN202283621 U CN 202283621U
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Abstract
The utility model discloses an intelligent energy-saving high-frequency pulse power supply for wire cutting, which comprises a direct-current power supply, a control circuit, driving circuits, a power amplification module, a discharge gap and a detection circuit. The control circuit consists of a main control module consisting of a single-chip microcomputer, a display module circuit, a keyboard module circuit, a rotary encoding circuit and a network communication circuit. The direct-current power supply is connected with the main control module. The driving circuits are divided into two groups, wherein a first group of driving circuits is connected with the discharge gap through the power amplification module, and a second group of driving circuits is connected with the discharge gap through a quenching circuit. A group of high-frequency packet modules and the main control module are respectively connected with the first group of driving circuits and the second group of driving circuits through logical AND and logical NOT. The detection circuit comprises a quenching detection module which is used for feeding back quenching information and a detection module which is used for feeding back no-load signals, short-circuit signals and spark discharge signals. The intelligent energy-saving high-frequency pulse power supply for wire cutting has the advantages that the circuit structure is simple, the manufacturing cost is low, the machining adjustment accuracy is high and the situation of broken wires is not apt to occur.
Description
Technical field
The utility model relates to a kind of line cutting intelligent power saving high frequency pulse power supply.
Background technology
Spark machined; Be in certain medium, to utilize between tool-electrode and the workpiece pulse feature spark discharge that workpiece material is removed; To reach certain geomery and a kind of processing method of surface roughness requirement; Electric spark working pulse power source is as the important component part of electric spark machine tool; Its effect is the unidirectional pulse electric current that is converted into industrial-frequency alternating current certain frequency, comes ablation metal to supply with electrode discharge gap energy needed, and the pulse power has very big influence to technical-economic indexes such as the stability of the productivity ratio of spark machined, surface quality, machining accuracy, process and tool electrode loss.The electric spark working pulse power source of being produced on the market at present, circuit structure is complicated, and manufacturing cost is high; Can not continuously regulating impulse parameter; Select to bring certain limitation to machined parameters, the surface roughness that pulse precision is not high, influence workpiece, the while also is easy to generate the fracture of wire phenomenon.Moreover existing wire-electrode cutting impulsing power source power consumption is big, and the power utilization rate is low, not environmental protection.The applicant is through attempting, with the PWM technical application to electric spark machining field.Pulse width modulation (PWM); It is the abbreviation of English " Pulse Width Modulation "; Be called for short pulsewidth modulation; Be to utilize the numeral of microprocessor to export a kind of very effective technology that analog circuit is controlled, be widely used in from many fields of measurement, the power of communicating by letter control and conversion.
Summary of the invention
The purpose of the utility model is in order to solve the problems of the technologies described above; A kind of line cutting intelligent power saving high frequency pulse power supply is provided; It has adopted the PWM control technology, and it has, and the processing degree of regulation is high, the power utilization rate high, be not easy to produce fracture of wire, cheap for manufacturing cost and advantage that circuit structure is succinct.
For solving the problems of the technologies described above, the utility model adopts following technical proposal:
Line cutting intelligent power saving high frequency pulse power supply; Include dc source, control circuit, drive circuit, power amplifier module, discharging gap and testing circuit, it is characterized in that main control module, display module circuit, Keysheet module circuit, rotary coding circuit and network communications circuits that described control circuit is made up of single-chip microcomputer constitute; Said dc source is connected with the main control module; Described drive circuit includes two groups, and wherein first group of drive circuit connects power amplifier module, and power amplifier module connects discharging gap again, and second group of drive circuit connects arc-suppression circuit, and arc-suppression circuit connects discharging gap again; One group of high frequency grouping module is connected first, second group drive circuit with described main control module respectively through logical AND and logic NOT; Said testing circuit includes and is arranged on the arc extinguishing detection module that is used to feed back arc extinguishing information between arc-suppression circuit and the main control module, also comprises being arranged on the detection module that is used to feed back airborne signals, short-circuit signal and spark discharge signal between discharging gap and the main control module.
Further design, said arc-suppression circuit includes MOSFET pipe, power resistor, low-tension supply battery, wherein; The MOSFET pipe has two; The grid of first MOSFET pipe connects said first group of drive circuit, and source electrode connects said power amplifier module, and drain electrode links to each other with said discharging gap; The grid of second MOSFET pipe connects said second group of drive circuit, and source electrode links to each other with the positive pole of low-tension supply battery, and drain electrode is connected with said discharging gap, power resistor and low-tension supply battery.
Further design, described main control module is the continuously adjustable PWM waveform of a dutycycle output module, and described rotary coding circuit includes the rotary encoder that can regulate input signal continuously, and rotary encoder is connected with main control module by signal input.
Further design, said high frequency grouping module are to be used to produce the high frequency oscillation module that dutycycle is 50% square wave, and the high frequency grouping module is connected with described main control module by signal output realization logical AND.
Further design, said dc source is the intelligent power saving power supply that has FEEDBACK CONTROL.
The beneficial effect of the utility model is:
At first, through the intelligent power saving power supply is set, in practical process, the main control module reaches the requirement that efficiently utilizes electric energy according to the output of feedback signal adjustment dc source, realizes the purpose of energy-conserving and environment-protective; Secondly, through adopting the PWM technology, make the output duty of ratio adjustable continuously, therefore can adapt to different Material Processings, can realize roughing, middle processing and fine finishining, versatility is good; The 3rd, through the high frequency grouping module is set, can make workpiece machining surface meticulousr level and smooth; The 4th, through the arc extinguishing testing circuit is set, can effectively prevent to produce the phenomenon of electric arc, prevent fracture of wire and prevent to produce sintering phenomenon, can effectively control discharge time between arteries and veins simultaneously, improve working (machining) efficiency; Through network communications circuits is set, can link to each other with the mainframe computer technological data bank, make the processing of lathe intelligent more.
[description of drawings]
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain:
Fig. 1 is the principle framework figure of the utility model;
Fig. 2 is the annexation sketch map of the utility model arc extinguishing testing circuit and other circuit;
Fig. 3 is the waveform stack sketch map of the utility model main control module and high frequency grouping module;
Fig. 4 is arc extinguishing testing circuit and zero load, short circuit, spark discharge detection module circuit diagram;
[specific embodiment]
To shown in Figure 4, a kind of line cutting intelligent power saving high frequency pulse power supply includes the main control module like Fig. 1; The main control module is the continuously adjustable PWM waveform of a dutycycle output module, and the utility model adopts the STC12LE5616AD chip, is connected with display module circuit, Keysheet module circuit, rotary coding circuit, network communications circuits on the main control module; Wherein, The display module circuit is used for the current machining state of display line cutting equipment, and the Keysheet module circuit is used for artificial input related processing parameters, and the rotary coding circuit is provided with rotary encoder; Can regulate the dutycycle of input signal continuously; Can realize the processing that becomes more meticulous, network communications circuits is used to connect the technological data bank of mass computing machine equipment, realizes intelligent processing; Display module circuit, Keysheet module circuit, rotary coding circuit and network communications circuits are traditional circuit, do not describe in detail at this; Also include discharging gap, be provided with the detection module that is used to feed back airborne signals, short-circuit signal and spark discharge signal between discharging gap and the main control module.
Dc source is connected with the main control module, and dc source is the intelligent power saving power supply that has FEEDBACK CONTROL, and the main control module to the intelligent power saving power supply, according to actual processing, realizes the dynamic output of power with the feedback information in the process.The main control module realizes that with a high frequency grouping module logical AND is connected; The high frequency grouping module is the high accuracy multivibrator of band crystal oscillator; Main control module and high frequency grouping module are connected respectively to first NAND gate input (the 1st pin and the 2nd pin) of 74HC00 chip, and first NAND gate output (the 3rd pin) signal of 74HC00 chip is divided into two-way, and wherein first via signal links to each other with second NAND gate input (the 4th pin and the 5th pin) of 74HC00 chip; The second road signal links to each other with first group of photoelectric isolation module; Photoelectric isolation module is exported to first group of drive circuit, and first group of drive circuit exported to power amplification circuit (drive circuit, power amplification circuit are traditional circuit, do not describe in detail at this) again; Power amplification circuit links to each other with discharging gap; The power supply of power amplification circuit is provided by the intelligent power saving power supply, and second NAND gate output (the 6th pin) of 74HC00 chip connects second group of photoelectric isolation module, and second group of photoelectric isolation module exported to second group of drive circuit; Second group of drive circuit connects an arc-suppression circuit, and arc-suppression circuit is associated with the discharging gap two ends.
As shown in Figure 2, arc-suppression circuit 1 includes MOSFET pipe, power resistor R, low-tension supply battery, wherein; The MOSFET pipe has two; In the utility model, the MOSFET pipe adopts the FR304 pipe, and the grid of first MOSFET pipe connects above-mentioned first group of drive circuit; Source electrode connects above-mentioned power amplifier module, and drain electrode links to each other with above-mentioned discharging gap; The grid of second MOSFET pipe connects above-mentioned second group of drive circuit, and source electrode links to each other with the positive pole of low-tension supply battery, and drain electrode is connected with above-mentioned discharging gap, power resistor and low-tension supply battery.
As shown in Figure 3, in the edm process, sharply fusing and vaporization take place in the local heat of metal works and instrument, are removed the metallic particles that gets off by Yu under electrochemical effect; Become the charged ion that has positive electricity and negative electricity in a large number, after a process was accomplished, these particles were mobile compound automatically in the intermittent time, distribute with the form of heat; As do not wait compound the finishing of these ions just to add second processing stand pulse, and just very easily form short circuit, produce electric arc; Burn out workpiece, make decrease in yield, in the process of processing, can produce a large amount of charged ions; According to law of conservation of energy, the quantity of negative ions equates, because can regard the working solution in gap as a chemical cell; The size of its energy is processed waveform by processing electric current, the rapidoprint decision.Compound in order to accelerate ion, can be at discharging gap two ends parallel connections one arc-suppression circuit, arc-suppression circuit is by low-voltage dc power supply; High-power FET MOSFET, power resistor is formed, under the effect of extra electric field; Negative ions is compound rapidly, and the thermal energy consumption of generation is on power resistor.
Record the waveform of main control module, high frequency grouping module, logical AND gate output with digital oscilloscope; Fig. 3 has described three kinds of different output waveform curves, and curve A is the continuously adjustable PWM waveform of dutycycle, and curve B is a high frequency grouping waveform, and curve C is an overlaid waveforms, promptly through PWM waveform and high frequency grouping waveform logic and after waveform, T
1Be the pulsewidth width of PWM waveform, T
2Be width between the arteries and veins of PWM waveform, T
3Be the pulsewidth width of high frequency grouping waveform, T
4Width between the arteries and veins of high frequency grouping waveform.
Common wire-electrode cutting impulsing power source output waveform is a curve A, in cutting process, if T
1Select meeting too much to produce electric arc, burn out workpiece, make surface of the work more coarse; Not only like this, more can produce the fracture of wire phenomenon; If T
3Select to such an extent that too small meeting makes ion not exclusively compound, can produce electric arc, burn out workpiece,, influence working (machining) efficiency greatly if select meeting too much to make discharge time long.
The high frequency grouping waveform that the high frequency grouping module produces is a curve B, T
3With T
4Selection should equate, can select according to the desired roughness of workpiece, promptly as long as change the crystal oscillator frequency size of high frequency grouping module.
Output waveform through after the logical AND stack is a curve C, and curve C matches with arc-suppression circuit and arc extinguishing testing circuit and can overcome fracture of wire, coarse, the low inferior many defect of working (machining) efficiency of surface of the work; Its process is described below:
Curve C only just changes when the pulsewidth of curve A, becomes equally with curve B, still is discharge recombination time in the time of between the arteries and veins of curve C, and this recombination time is less, by the control of the feedback quantity of arc extinguishing testing circuit, to raise the efficiency; During the pulsewidth of curve C because the same with curve B, so but at this moment reference curve B be described below: when at T
3The time, line cutting regular picture cutting, this moment, arc-suppression circuit turn-offed, when at T
4The time, the line cutting is in discharging gap, stops cutting, and arc-suppression circuit is started working; The above work that goes round and begins again, the arc extinguishing testing circuit is in machining state all the time in whole machining process, even when detecting T
4When all composite band electron ion fully, and accumulation produce certain threshold voltage, must be by T
2Come the composite band electron ion; It more than is exactly the entire work process of curve C.
Claims (5)
1. line cuts the intelligent power saving high frequency pulse power supply; Include dc source, control circuit, drive circuit, power amplifier module, discharging gap and testing circuit, it is characterized in that main control module, display module circuit, Keysheet module circuit, rotary coding circuit and network communications circuits that described control circuit is made up of single-chip microcomputer constitute; Said dc source is connected with the main control module; Described drive circuit includes two groups, and wherein first group of drive circuit connects power amplifier module, and power amplifier module connects discharging gap again, and second group of drive circuit connects arc-suppression circuit, and arc-suppression circuit connects discharging gap again; One group of high frequency grouping module is connected first, second group drive circuit with described main control module respectively through logical AND and logic NOT; Said testing circuit includes and is arranged on the arc extinguishing detection module that is used to feed back arc extinguishing information between arc-suppression circuit and the main control module, also comprises being arranged on the detection module that is used to feed back airborne signals, short-circuit signal and spark discharge signal between discharging gap and the main control module.
2. a kind of line cutting intelligent power saving high frequency pulse power supply according to claim 1; It is characterized in that said arc-suppression circuit includes MOSFET pipe, power resistor, low-tension supply battery; Wherein, the MOSFET pipe has two, and the grid of first MOSFET pipe connects said first group of drive circuit; Source electrode connects said power amplifier module, and drain electrode links to each other with said discharging gap; The grid of second MOSFET pipe connects said second group of drive circuit, and source electrode links to each other with the positive pole of low-tension supply battery, and drain electrode is connected with said discharging gap, power resistor and low-tension supply battery.
3. a kind of line cutting intelligent power saving high frequency pulse power supply according to claim 2; It is characterized in that described main control module is the continuously adjustable PWM waveform of a dutycycle output module; Described rotary coding circuit includes the rotary encoder that can regulate input signal continuously, and rotary encoder is connected with main control module by signal input.
4. a kind of line cutting intelligent power saving high frequency pulse power supply according to claim 3; It is characterized in that said high frequency grouping module is to be used to produce the high frequency oscillation module that dutycycle is 50% square wave, the high frequency grouping module realizes that with described main control module by signal output logical AND is connected.
5. a kind of line cutting intelligent power saving high frequency pulse power supply according to claim 4 is characterized in that said dc source is the intelligent power saving power supply that has FEEDBACK CONTROL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202781248U CN202283621U (en) | 2011-08-02 | 2011-08-02 | Intelligent energy-saving high-frequency pulse power supply for wire cutting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202781248U CN202283621U (en) | 2011-08-02 | 2011-08-02 | Intelligent energy-saving high-frequency pulse power supply for wire cutting |
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| CN202283621U true CN202283621U (en) | 2012-06-27 |
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| CN2011202781248U Expired - Fee Related CN202283621U (en) | 2011-08-02 | 2011-08-02 | Intelligent energy-saving high-frequency pulse power supply for wire cutting |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107967A (en) * | 2013-04-19 | 2014-10-22 | 上海大量电子设备有限公司 | Intelligent-control high frequency pulse power supply |
| CN106238840A (en) * | 2016-08-31 | 2016-12-21 | 泰州龙芯微电子技术有限公司 | Line cutting power supply control method and system thereof |
| CN107297550A (en) * | 2017-07-04 | 2017-10-27 | 广东工业大学 | A kind of Electrolyzed Processing work piece apparatus |
| CN107398609A (en) * | 2017-08-16 | 2017-11-28 | 南京亿希姆机电科技有限公司 | One kind is used for large space multiple computer desk Electrolyzed Processing intelligent control pulse power system |
| CN107695470A (en) * | 2017-11-17 | 2018-02-16 | 肇庆市高讯数控设备有限公司 | Intelligent high-speed saves wire cutting high frequency pulse power supply |
| CN109986154A (en) * | 2017-12-29 | 2019-07-09 | 南京亿希姆机电科技有限公司 | The intelligent control pulse power system and control method of multistation turbine blades in electrochemical machining |
| CN112620843A (en) * | 2020-12-25 | 2021-04-09 | 江苏塞维斯数控科技有限公司 | Medium-speed wire pure oil cutting high-frequency energy-saving power supply with negative pressure |
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2011
- 2011-08-02 CN CN2011202781248U patent/CN202283621U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107967A (en) * | 2013-04-19 | 2014-10-22 | 上海大量电子设备有限公司 | Intelligent-control high frequency pulse power supply |
| CN104107967B (en) * | 2013-04-19 | 2017-01-25 | 上海大量电子设备有限公司 | Intelligent-control high frequency pulse power supply |
| CN106238840A (en) * | 2016-08-31 | 2016-12-21 | 泰州龙芯微电子技术有限公司 | Line cutting power supply control method and system thereof |
| CN107297550A (en) * | 2017-07-04 | 2017-10-27 | 广东工业大学 | A kind of Electrolyzed Processing work piece apparatus |
| CN107297550B (en) * | 2017-07-04 | 2019-04-19 | 广东工业大学 | A kind of Electrolyzed Processing work piece apparatus |
| CN107398609A (en) * | 2017-08-16 | 2017-11-28 | 南京亿希姆机电科技有限公司 | One kind is used for large space multiple computer desk Electrolyzed Processing intelligent control pulse power system |
| CN107695470A (en) * | 2017-11-17 | 2018-02-16 | 肇庆市高讯数控设备有限公司 | Intelligent high-speed saves wire cutting high frequency pulse power supply |
| CN107695470B (en) * | 2017-11-17 | 2023-10-03 | 肇庆市高讯数控设备有限公司 | Intelligent high-speed energy-saving wire-electrode cutting high-frequency pulse power supply |
| CN109986154A (en) * | 2017-12-29 | 2019-07-09 | 南京亿希姆机电科技有限公司 | The intelligent control pulse power system and control method of multistation turbine blades in electrochemical machining |
| CN109986154B (en) * | 2017-12-29 | 2020-12-01 | 南京亿希姆机电科技有限公司 | Intelligent control pulse power supply system for multi-station blade electrolytic machining and control method |
| CN112620843A (en) * | 2020-12-25 | 2021-04-09 | 江苏塞维斯数控科技有限公司 | Medium-speed wire pure oil cutting high-frequency energy-saving power supply with negative pressure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20120802 |