CN100357053C - Voltage-regulating energy saving spark machining pulse power supply - Google Patents
Voltage-regulating energy saving spark machining pulse power supply Download PDFInfo
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- CN100357053C CN100357053C CNB2005100449577A CN200510044957A CN100357053C CN 100357053 C CN100357053 C CN 100357053C CN B2005100449577 A CNB2005100449577 A CN B2005100449577A CN 200510044957 A CN200510044957 A CN 200510044957A CN 100357053 C CN100357053 C CN 100357053C
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- 238000009760 electrical discharge machining Methods 0.000 title claims description 9
- 230000015556 catabolic process Effects 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract 3
- 238000007599 discharging Methods 0.000 claims description 8
- 238000002679 ablation Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 238000010892 electric spark Methods 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 230000003321 amplification Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 238000002242 deionisation method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000541 pulsatile effect Effects 0.000 description 1
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Abstract
The present invention relates to an electric spark processing pulse power source in the field of mechanical processing, particularly to a voltage regulating energy saving electric spark processing pulse power source. The present invention comprises a rectifying filtering circuit (1), a voltage regulating circuit (2), a pulse conversion and power amplification circuit (3), a voltage and current detection circuit (5), a pulsed triggering circuit (6) and a PWM control circuit (7). the pulse power source can supply no-load sparking voltage of about 100V for processing discharge gaps (4) before discharge breakdown and supplies processing maintaining voltage of about 25V for the discharge gap after the breakdown; the present has the characteristics of adaptive voltage regulation and equal current pulse width; the present invention can realize the extensive independent regulation of pulse voltage, pulse width and pulse separation and thoroughly cancel a current limiting resistor with serious energy consumption; the utilization rate of electric energy can be increased by about two times.
Description
Technical field
The present invention relates to the electric spark working pulse power source in a kind of field of machining.
Background technology
The pulse power is an important component part in the spark machined system, and its performance has bigger influence to productivity ratio, machining accuracy, suface processing quality, export license and the utilization rate of electrical etc. of spark machined.
Required energy when the pulse power provides spark machined ablation material, consume the energy more than 80% of electric spark machine tool.Electric spark working pulse power source has experienced the non-independent pulse generator of uncontrollable RC, RLC since producing, discharging gap and dc source independent pulse generator independent separately, that isolate mutually, and on the basis of independent pulse generator derivative other pulse power, as the accurate intelligent pulse power of high-low pressure composite pulse power supply, the multiloop pulse power, isopulse power supply, free processing rule and the self adaptation pulse power etc.Electric spark working pulse power source commonly used both at home and abroad at present mostly adopts the working method in discharge major loop series limiting resistor, its utilization rate of electrical is 25%, nearly 75% electric energy then with the form consumption of heat on current-limiting resistance, this is when reducing utilization rate of electrical, and also the service behaviour of the cooling system of paired pulses power supply and electronic component has proposed higher requirement.In order to reduce the energy consumption of electric spark working pulse power source, the scientific worker has carried out number of research projects to spark machined energy-saving pulse power supply both at home and abroad, these research work common features are to adopt the alternative current-limiting resistance of inductance in inductance element or the transformer coil to carry out current limliting and energy storage, the utilization rate of electrical of the pulse power is greatly improved, but has limited the adjustable range of pulse parameter.
Summary of the invention
The purpose of this invention is to provide a kind of novel spark machined energy-saving pulse power supply, completely abolish the serious current-limiting resistance of power consumption, when increasing substantially pulse power capacity usage ratio, this pulse power also have the self adaptation pressure regulation and etc. functions such as current pulse width, can realize that the independent of pulse voltage, pulse width, pulse spacing adjust on a large scale.
Principle of the present invention: the voltage-regulating energy saving spark machining pulse power supply of being invented mainly is made up of current rectifying and wave filtering circuit 1, voltage regulator circuit 2, impulse transfer and power amplifier 3, voltage and current detection circuit 5, pulsed triggering circuit 6, pwm control circuit 7 etc.Spark discharge adds man-hour this pulse power and links to each other with workpiece with tool-electrode, and the discharge ablation adds the man-hour energy needed to be provided by impulse transfer and power amplifier 3; Voltage and current detection circuit 5 send detected voltage, current signal to pulsed triggering circuit 6; Pulsed triggering circuit 6 is being carried out on the analyzing and processing basis received voltage, current signal, one road direction impulse transfer and power amplifier 3 send pulse width, pulse spacing and the discharge current that the discharge pulse control signal is controlled discharge processing, and another road direction pwm control circuit 7 transmits control signal; Pwm control circuit sends control commands corresponding according to received direction of signal voltage regulator circuit 2, when pwm control circuit 7 does not receive the discharge breakdown signal, the pulsewidth modulation square-wave signal that sends big space rate makes voltage regulator circuit 2 output HIGH voltages (floating voltage about 100V) supply with impulse transfer and power amplifier 3, when pwm control circuit 7 receives the discharge breakdown signal, the pulsewidth modulation square-wave signal that sends little dutycycle makes voltage regulator circuit 2 keep voltage to the discharge processing that the floating voltage about 100V is adjusted to about 25V, and discharge ablation processing energy needed is provided; After the pulsatile once discharge finishes, impulse transfer and power amplifier 3 stop to power to discharging gap, carry out the discharging gap deionization, this moment, voltage regulator circuit 2 was under the effect of control signal, output voltage is adjusted to floating voltage about 100V, for pulsed discharge next time provides breakdown voltage, go on so circularly, the pulse power of the present invention has just been realized the automatic adjusting of each discharge pulse voltage, fully phase out the current-limiting resistance in the electric spark working pulse power source, realized energy-efficient purpose preferably.
The present invention compares with electric spark working pulse power source commonly used at present has following advantage:
1. have the self adaptation pressure regulation and etc. the current pulse width characteristic, can realize that pulse voltage, pulse width, pulse spacing are independent adjustable on a large scale, completely abolished the serious current-limiting resistance that consumes energy, utilization rate of electrical can improve about 2 times.
2. cancel the required high-power Industrial Frequency Transformer of traditional electric spark working pulse power source, not only saved the expense of this part, but also reduced the volume and weight of the pulse power effectively.
3. owing to cancelled high-power current-limiting resistance, therefore reduced influence effectively, improved the functional reliability of the pulse power because of electronic component in the resistance heating paired pulses power supply.
4. external high frequency electromagnetic radiation is little.
5. higher Electro Magnetic Compatibility is arranged.
Description of drawings
Fig. 1 is a voltage-regulating energy saving spark machining pulse power supply composition frame chart of the present invention.
Fig. 2 is the electrical block diagram of voltage-regulating energy saving spark machining pulse power supply of the present invention.
Designation among the last figure:
C
1, C
2Be polarity free capacitor, C
3Be electrochemical capacitor, M
1～M
3Be power switch component, D
1～D
3Be diode, L is an inductance, and T is a high-frequency pulse transformer.
The specific embodiment
Referring to Fig. 1.Voltage-regulating energy saving spark machining pulse power supply of the present invention comprises current rectifying and wave filtering circuit 1, voltage regulator circuit 2, impulse transfer and power amplifier 3, voltage and current detection circuit 5, pulsed triggering circuit 6, pwm control circuit 7.Current rectifying and wave filtering circuit 1 becomes direct current of voltage regulation to alternating current, carries direct currents for voltage regulator circuit 2; The automatic regulation voltage of control command that voltage regulator circuit 2 sends according to pwm control circuit 7, and flow to impulse transfer and power amplifier 3, high voltage when zero load about output 100V, be used for the disruptive discharge gap, after the gap was breakdown, voltage was kept in the processing that its output is transferred to about 25V, when pulsed discharge enters the discharging gap deionization, this circuit is exported floating voltage once more, goes on and so forth and just can realize the automatic adjusting of each pulse discharging voltage; The control signal that impulse transfer and power amplifier 3 send according to pulsed triggering circuit 6 is come to electro discharge machining gapping place 4 voltage pulse outputs, and discharge ablation processing energy needed is provided; Voltage and current detection circuit 5 are gathered the voltage and current signal of discharging gap, flow to pulsed triggering circuit 6; Pulsed triggering circuit 6 transmits control signal to pwm control circuit 7 and impulse transfer and power amplifier 3 respectively on the basis of received voltage, current signal being carried out analyzing and processing; Electric current, the voltage signal that pwm control circuit 7 is sent according to pulsed triggering circuit 6 adjusted the dutycycle of its output impulse wave, and then arrives the purpose that makes voltage regulator circuit 2 realize automatic Regulation.
Referring to Fig. 2.Capacitor C in the circuit of voltage-regulating energy saving spark machining pulse power supply of the present invention
1, C
2With power switch component M
1, M
2Constitute half-bridge inverter, this half-bridge inverter produces the high-frequency ac square wave under the control signal effect that pwm control circuit 7 is sent, and send the primary edge of high-frequency pulse transformer T to, secondary side at pulse transformer T produces frequency, phase place is identical, the high-frequency ac square wave that amplitude reduces, and send to by diode D1, D2 and constitute full-wave rectifying circuit, this full-wave rectifying circuit converts the high-frequency ac square wave to high frequency direct current square wave, flows to by inductance L and capacitor C
3The filter circuit that constitutes becomes direct current to high frequency direct current square wave by this filter circuit, diode D
3Provide continuous current circuit, power switch component M
3Under the control signal effect that pulsed triggering circuit is sent,, provide the required breakdown voltage of discharge processing, discharge to keep voltage and discharge ablation energy to tool- electrode 8 and 10 output of workpiece high frequency direct current square wave.Voltage detecting circuit 9 is parallel to the discharging gap two ends of being made up of tool-electrode 8 and workpiece 10, gathers the discharge voltage signal, sends pulsed triggering circuit 6 to; Current detection circuit 11 is series at by in the discharge major loop, gathers the discharge current signal, sends pulsed triggering circuit 6 to.
Claims (2)
1. voltage-regulating energy saving spark machining pulse power supply, it comprises current rectifying and wave filtering circuit (1), voltage regulator circuit (2), impulse transfer and power amplifier (3), voltage and current detection circuit (5), pulsed triggering circuit (6), pwm control circuit (7), it is characterized in that: voltage regulator circuit (2) is by electric capacity (C
1, C
2), power switch component (M
1, M
2) and high-frequency pulse transformer (T) composition, impulse transfer and power amplifier (3) are by diode (D
1, D
2), fly-wheel diode (D
3), inductance (L), electric capacity (C
3) and power switch component (M
3) form electric capacity (C
1, C
2) and power switch component (M
1, M
2) constituting half-bridge inverter, this half-bridge inverter primary edge to high-frequency pulse transformer (T) under the control signal effect that pwm control circuit (7) is sent is carried high-frequency pulse voltage, diode (D
1, D
2) constitute the secondary side that full-wave rectification is connected in transformer (T), (D
3) be fly-wheel diode, inductance (L) and electric capacity (C
3) constitute output filter, be power switch component (M
3) carry DC voltage, by power switch component (M
3) output high frequency direct current square wave, provide the required breakdown voltage of discharge processing, discharge to keep voltage and discharge ablation energy.
2. voltage-regulating energy saving spark machining pulse power supply according to claim 1, it is characterized in that: current rectifying and wave filtering circuit (1) output dc voltage is given voltage regulator circuit (2), voltage regulator circuit (2) is regulated output voltage to impulse transfer and power amplifier (3) automatically according to the control command that pwm control circuit (7) sends, the control signal that impulse transfer and power amplifier (3) send according to pulsed triggering circuit (6) is come to electro discharge machining gapping place (4) voltage pulse output, discharge ablation processing energy needed is provided, voltage and current detection circuit (5) are gathered the voltage and current signal of discharging gap, flow to pulsed triggering circuit (6), pulsed triggering circuit (6) is to received voltage, current signal carries out on the basis of analyzing and processing respectively transmitting control signal to pwm control circuit (7) and impulse transfer and power amplifier (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100449577A CN100357053C (en) | 2005-10-24 | 2005-10-24 | Voltage-regulating energy saving spark machining pulse power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100449577A CN100357053C (en) | 2005-10-24 | 2005-10-24 | Voltage-regulating energy saving spark machining pulse power supply |
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| Publication Number | Publication Date |
|---|---|
| CN1772425A CN1772425A (en) | 2006-05-17 |
| CN100357053C true CN100357053C (en) | 2007-12-26 |
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|---|---|---|---|
| CNB2005100449577A Expired - Fee Related CN100357053C (en) | 2005-10-24 | 2005-10-24 | Voltage-regulating energy saving spark machining pulse power supply |
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Families Citing this family (24)
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| EP1886755B1 (en) * | 2006-08-11 | 2013-01-02 | Agie Charmilles SA | Device and method for high frequency electrical discharge machining |
| CN101254559B (en) * | 2008-04-08 | 2010-06-09 | 哈尔滨工业大学 | Numerical control electrospark wire-electrode cutting processing gapping place crest voltage regulating device |
| CN101618368B (en) * | 2009-07-25 | 2012-05-16 | 大连理工大学 | Tri-broken line spark control method in electric precipitation |
| CN103658878B (en) * | 2012-09-06 | 2016-05-04 | 上海汉霸机电有限公司 | A kind of for processing the electric machining device of molybdenum |
| CN102909444B (en) * | 2012-10-16 | 2015-02-18 | 中国石油大学(华东) | Pulsed power supply with parallel high-energy capacitors for electrosparking |
| JP5642810B2 (en) | 2013-01-08 | 2014-12-17 | ファナック株式会社 | Power supply for electric discharge machining |
| CN103084675B (en) * | 2013-01-15 | 2016-09-21 | 洛阳信成精密机械有限公司 | A kind of electric discharge machine processes method and the control system that feeding automatically controls |
| CN104475886B (en) * | 2014-12-25 | 2017-02-22 | 西安建筑科技大学 | Chopped-mode energy-saving electromachining pulse power supply |
| CN105171146B (en) * | 2015-07-14 | 2017-12-05 | 北京建筑大学 | Electrical discharge machining adaptive control system and method |
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| CN105269090A (en) * | 2015-10-26 | 2016-01-27 | 苏州新火花机床有限公司 | Electric spark discharging machining device special for PCD materials |
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| CN107775126B (en) * | 2016-08-31 | 2019-09-24 | 山东豪迈机械科技股份有限公司 | Electrical discharge machining pulse power and its control method |
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| CN107355817B (en) * | 2017-07-20 | 2019-06-04 | 西安爱邦电磁技术有限责任公司 | A kind of low energy single electric spark production method |
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| CN109277657B (en) * | 2018-11-16 | 2020-01-21 | 苏州哈工乔德智能装备有限公司 | Self-adaptive discharge control system and method for wire-moving linear cutting |
| CN109702279A (en) * | 2019-03-01 | 2019-05-03 | 南京工程学院 | A kind of pulse power of small-sized electric discharge machining apparatus |
| CN110611452A (en) * | 2019-10-23 | 2019-12-24 | 重庆大学 | Parameter-adjustable fast-rising leading edge pulse generator and working method |
| CN112404615A (en) * | 2020-11-09 | 2021-02-26 | 宁波工程学院 | Electric spark machine tool capable of converting modules |
| CN113271030B (en) * | 2021-05-25 | 2022-11-29 | 中国工程物理研究院机械制造工艺研究所 | Pulse generation control method for pulse power supply |
| CN114939700A (en) * | 2022-07-04 | 2022-08-26 | 新疆大学 | High-low voltage composite electric spark electrolysis controllable pulse power supply |
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-
2005
- 2005-10-24 CN CNB2005100449577A patent/CN100357053C/en not_active Expired - Fee Related
Patent Citations (3)
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|---|---|---|---|---|
| JPS6411713A (en) * | 1987-07-07 | 1989-01-17 | Fanuc Ltd | Electric discharge machining device |
| JPH01210219A (en) * | 1988-02-19 | 1989-08-23 | Nec Corp | Electric discharge machining electric current control circuit |
| CN2314882Y (en) * | 1997-09-30 | 1999-04-21 | 中国人民解放军装甲兵工程学院 | Mold repairing machine for inert gas protection welding of micro pulse rotary melting electrode |
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| Title |
|---|
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| CN1772425A (en) | 2006-05-17 |
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