CN103008803A - High-instantaneous-energy-density electric spark high-speed milling power supply device - Google Patents
High-instantaneous-energy-density electric spark high-speed milling power supply device Download PDFInfo
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- CN103008803A CN103008803A CN2012105310912A CN201210531091A CN103008803A CN 103008803 A CN103008803 A CN 103008803A CN 2012105310912 A CN2012105310912 A CN 2012105310912A CN 201210531091 A CN201210531091 A CN 201210531091A CN 103008803 A CN103008803 A CN 103008803A
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Abstract
The invention relates to an electric spark machining power supply device, i.e., a high-instantaneous-energy-density electric spark high-speed milling power supply device, in the field of machining. The device comprises a high-power rectifying and filtering circuit 1, a breakdown voltage regulating circuit 2, a high-power low-voltage pulse conversion circuit 3, an isolator 4, a current and voltage detection circuit 6 and a control circuit 7. According to the power supply device, on one hand, higher breakdown voltage can be provided for a discharge gap to increase the discharge gap and reduce collision probability of machining chips and a tool electrode, so as to reduce relative loss of the tool electrode, and on the other hand, the power supply device can also provide higher peak current for a discharge passage, so that the energy density of a discharge passage acting on the surface of a workpiece is guaranteed, and the machining efficiency can be greatly increased.
Description
Technical field
What the present invention relates to is high instantaneous energy density electric spark high speed Milling Process supply unit, belongs to field of machining.
Background technology
Realization is to the high speed with high rigidity, high strength, high tenacity and brittle materials, the effort target that highly-efficient processing is material processing field always.Traditional processing method is difficult to it is carried out highly-efficient processing, and processing cost is generally higher.The processing that discharge is processed as above material provides a kind of effective method, and with respect to high-speed milling process equipment and the processing cost of costliness, electric processing method has embodied its good economy.Spark machined is a kind of processing method that removes material by the discharge of the continuously sparking between electrode and the workpiece to be machined.Owing to directly do not contact between tool-electrode and the workpiece, so that spark machined has macroscopical active force is little, low and realize easily the advantage such as Precision Machining to the requirement of lathe rigidity.But present electromachining equipment ubiquity material is removed inefficient shortcoming.
The pulse power is an important component part in the EDM System, and its performance all has a great impact production efficiency, workpiece surface quality, export license.Little and the little shortcoming of power of present pulse power ubiquity discharge energy both domestic and external has limited the further raising that the spark machined material is removed efficient.
The inventor found through experiments, and adopts the spark discharge of macro-energy, high instantaneous energy density, can be from improving to a great extent working (machining) efficiency; And suitably improve the breakdown voltage of discharging gap, can greatly reduce the relative loss factor of tool-electrode.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of " high instantaneous energy density electric spark high speed Milling Process supply unit " is provided, this supply unit is at the very significant discharge energy that improves, thus the raising working (machining) efficiency.
Principle of the present invention: the high instantaneous energy density electric spark high speed Milling Process of inventing mainly is comprised of power rectifier filter circuit 1, breakdown voltage regulating circuit 2, high-power low voltage pulse translation circuit 3, isolator 4, electric current and voltage detecting circuit 6, control circuit 7 etc. with supply unit.Breakdown voltage regulating circuit 2 provides gap breakdown required higher dc pulse voltage, guarantees to puncture to occur on the larger discharging gap; High-power low voltage pulse translation circuit 3 provides electric discharge removal required most energy; Isolator 4 is isolated breakdown voltage regulating circuit 2 and high-power low voltage pulse translation circuit 3, guarantees that it is independent of each other; Electric current and voltage detecting circuit 6 send detected voltage and current signal to control circuit 7; Control circuit 7 is carrying out on the basis of analyzing and processing received electric current and voltage signal, one road direction breakdown voltage regulating circuit 2 transmits control signal, control crest voltage, peak point current, pulsewidth and the dutycycle of the DC pulse of its output, the high-power low voltage pulse translation circuit 3 of another road direction transmits control signal, and controls crest voltage, peak point current, pulsewidth and the dutycycle of the DC pulse of its output.
Breakdown voltage regulating circuit 2 can provide higher gap breakdown voltage, thereby effectively increases discharging gap, so that the timely eliminating of machining chips; On the other hand, larger discharging gap can also reduce machining chips and contact with tool-electrode and the number of times that collides, and can reduce to a great extent the relative loss factor of tool-electrode.
High-power low voltage pulse translation circuit 3 can provide the spark discharge of high instantaneous energy density required most energy, has guaranteed that discharge channel acts on the energy density on the surface of the work, can significantly improve working (machining) efficiency.
The present invention compares with electric spark working pulse power source commonly used at present and has the following advantages: the gap breakdown voltage of increase, thus increased discharging gap, reduce the relative loss factor of tool-electrode, increased the energy density of discharge channel, improved working (machining) efficiency.
Description of drawings
Fig. 1 is the composition frame chart that high instantaneous energy density electric spark high speed Milling Process of the present invention is used supply unit.
Fig. 2 is the electrical block diagram that high instantaneous energy density electric spark high speed Milling Process of the present invention is used supply unit.
The specific embodiment
Referring to Fig. 1, high instantaneous energy density electric spark high speed Milling Process of the present invention comprises power rectifier filter circuit 1, breakdown voltage regulating circuit 2, high-power low voltage pulse translation circuit 3, isolator 4, electric current and voltage detecting circuit 6, control circuit 7 with supply unit.Power rectifier filter circuit 1 is transformed into direct current with alternating current, and offers breakdown voltage regulating circuit 2 and high-power low voltage pulse translation circuit 3; Breakdown voltage regulating circuit 2 provides peak impulse voltage adjustable breakdown voltage according to the control signal of control circuit 7, is used for the disruptive discharge gap; Can regulate discharging gap by regulating breakdown voltage; High-power low voltage pulse translation circuit 3 is according to the signal of control circuit 7, the direct current that power rectifier filter circuit 1 is provided is transformed into all adjustable low-voltage high-power DC pulses of peak point current, frequency and dutycycle, to be provided at needed energy in the ablation process; Isolator 4 is isolated breakdown voltage regulating circuit 2 and high-power low voltage pulse translation circuit 3, eliminates influencing each other between the two; Electric current and voltage detecting circuit 6 gather electric current and the voltage signal of discharging gap, and feed back to control circuit 7; Control circuit 7 is controlled magnitude of voltage and the dutycycle of breakdown voltage regulating circuit 2 according to the signal of electric current and voltage detecting circuit 6, and controls peak point current, frequency and the dutycycle of high-power low-voltage translation circuit 3.
Referring to Fig. 2, high instantaneous energy density electric spark high speed Milling Process of the present invention consists of the breakdown voltage regulating circuit with power switch component M1, M2 in the supply unit circuit, M3, inductance L and capacitor C.Voltage detecting circuit 9 is in parallel with the discharging gap that is made of tool-electrode 10 and workpiece 11, gathers voltage signal, and feeds back to control circuit 7.Control circuit 7 is according to the detection signal of voltage detecting circuit 9, the switch of power ratio control switch element M1 and M2, through inductance L and capacitor C filtering, the voltage of control capacitance C reaches needed breakdown voltage, the control signal that power switch component M3 sends according to control circuit 7 is come the voltage at switching capacity C two ends, and the isolator that consists of via diode D1 and current-limiting resistance R output to the discharging gap that tool-electrode 10 and workpiece 11 form.Current detection circuit 8 is connected on and gathers current signal in the main discharge circuit, and feeds back to control circuit 7; Control circuit 7 transmits control signal to high-power low voltage pulse translation circuit 3 according to the detection signal of current detection circuit 8, with peak point current, frequency and the dutycycle of the low-voltage high-power DC pulse of regulating its output; The low-voltage high-power DC pulse of high-power low voltage pulse translation circuit 3 outputs is applied on the discharging gap that is comprised of tool-electrode 10 and workpiece 11 through the isolator that is made of diode D2.
Claims (3)
1. one kind high instantaneous energy density electric spark high speed Milling Process supply unit, comprise power rectifier filter circuit 1, breakdown voltage regulating circuit 2, high-power low voltage pulse translation circuit 3, isolator 4, electric current and voltage detecting circuit 6, control circuit 7, it is characterized in that breakdown voltage regulating circuit 2 provides gap breakdown required higher dc pulse voltage, guarantee that puncture occurs on the larger discharging gap; High-power low voltage pulse translation circuit 3 provides electric discharge removal required most energy; Isolator 4 is isolated breakdown voltage regulating circuit 2 and high-power low voltage pulse translation circuit 3, guarantees that it is independent of each other; Electric current and voltage detecting circuit 6 send detected voltage and current signal to control circuit 7; The signal that control circuit 7 provides according to electric current and voltage detecting circuit 6, one road direction breakdown voltage regulating circuit 2 transmits control signal, control crest voltage, peak point current, pulsewidth and the dutycycle of the DC pulse of its output, the high-power low voltage pulse translation circuit 3 of another road direction transmits control signal, and controls crest voltage, peak point current, pulsewidth and the dutycycle of the DC pulse of its output.
2. high instantaneous energy density electric spark high speed Milling Process supply unit according to claim 1, it is characterized in that: the gap breakdown voltage adjustable extent that breakdown voltage regulating circuit 2 provides is 100 ~ 1000 V.
3. high instantaneous energy density electric spark high speed Milling Process supply unit according to claim 1, it is characterized in that: it is 100 ~ 5000 A that high-power low voltage pulse translation circuit 3 provides the peak point current adjustable extent of low-voltage high-power DC pulse, the crest voltage adjustable extent is 30 ~ 100 V, the pulse width adjustable extent is 0.1 ~ 2000 ms, and the pulse spacing adjustable extent is respectively 0.1 ~ 1000 ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210531091.2A CN103008803B (en) | 2012-12-11 | 2012-12-11 | High instantaneous energy density electric spark high speed Milling Process supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210531091.2A CN103008803B (en) | 2012-12-11 | 2012-12-11 | High instantaneous energy density electric spark high speed Milling Process supply unit |
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| Publication Number | Publication Date |
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| CN103008803A true CN103008803A (en) | 2013-04-03 |
| CN103008803B CN103008803B (en) | 2016-05-04 |
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| CN201210531091.2A Active CN103008803B (en) | 2012-12-11 | 2012-12-11 | High instantaneous energy density electric spark high speed Milling Process supply unit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3532850A (en) * | 1966-07-27 | 1970-10-06 | Amsted Ind Inc | Power supply for electrical discharge machining |
| JPS61260912A (en) * | 1985-05-15 | 1986-11-19 | Mitsubishi Electric Corp | Electric discharge machine |
| CN101327534A (en) * | 2008-07-30 | 2008-12-24 | 王凤清 | Pulse power source for electric spark machining capable of decreasing attrition of processing electrode |
| CN201211583Y (en) * | 2008-07-30 | 2009-03-25 | 王凤清 | Electric spark machining impulse power source capable of reducing machining electrode loss |
| CH704345B1 (en) * | 2008-05-29 | 2012-07-13 | Eth Zuerich | Device for milling and drilling rock with high energy pulses, has electronic power switch through which high discharge current and high energy are introduced into the rock, during milling and drilling |
-
2012
- 2012-12-11 CN CN201210531091.2A patent/CN103008803B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3532850A (en) * | 1966-07-27 | 1970-10-06 | Amsted Ind Inc | Power supply for electrical discharge machining |
| JPS61260912A (en) * | 1985-05-15 | 1986-11-19 | Mitsubishi Electric Corp | Electric discharge machine |
| CH704345B1 (en) * | 2008-05-29 | 2012-07-13 | Eth Zuerich | Device for milling and drilling rock with high energy pulses, has electronic power switch through which high discharge current and high energy are introduced into the rock, during milling and drilling |
| CN101327534A (en) * | 2008-07-30 | 2008-12-24 | 王凤清 | Pulse power source for electric spark machining capable of decreasing attrition of processing electrode |
| CN201211583Y (en) * | 2008-07-30 | 2009-03-25 | 王凤清 | Electric spark machining impulse power source capable of reducing machining electrode loss |
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| CN103008803B (en) | 2016-05-04 |
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