CN211661268U - Energy-saving control device for precision discharge machining power supply - Google Patents
Energy-saving control device for precision discharge machining power supply Download PDFInfo
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- CN211661268U CN211661268U CN202020275562.8U CN202020275562U CN211661268U CN 211661268 U CN211661268 U CN 211661268U CN 202020275562 U CN202020275562 U CN 202020275562U CN 211661268 U CN211661268 U CN 211661268U
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Abstract
The utility model provides a precise discharge machining power supply energy-saving control device, which comprises a direct current power supply, wherein one end of the direct current power supply is connected with one end of a machining power supply control unit, the other end of the machining power supply control unit is connected with an electrode, and the other end of the direct current power supply is connected with a workpiece; one end of a first energy-saving device is connected with the processing power supply control unit, the other end of the first energy-saving device is connected with one end of a first selection switch, and the other end of the first selection switch is connected with the other end of the direct-current power supply; one end of the second energy-saving device is connected with the processing power supply control unit, the other end of the second energy-saving device is connected with one end of a second selection switch, and the other end of the second selection switch is connected with the other end of the direct-current power supply. The utility model discloses can reduce the energy consumption of electrical discharge machining process on the basis that does not influence the normal work of electrical discharge machining power, practice thrift the cost. The system is compatible with two sets of energy-saving devices, and has high reliability and good energy-saving effect.
Description
Technical Field
The utility model relates to an energy-saving control system especially relates to an accurate discharge machining power energy-saving control device.
Background
The electric discharge machining is one of special machining technologies and is widely applied to the industries of mold manufacturing and machining. The electric discharge machining can be used for machining superhard materials and workpieces with complex shapes which are difficult to machine by traditional cutting methods, is generally used for machining conductive materials, and can machine complex cavities or profiles on materials which are difficult to machine, such as titanium alloy, tool steel, carbon steel, hard alloy and the like.
Specifically, in the electric discharge machining, a machining power supply control unit applies a set of machining pulses composed of high and low voltage pulses to a machining gap, and the machining pulses are divided in time and generally divided into two stages, namely pulse width (ON) and pulse stop (OFF). The stage of applying high voltage during processing is called ON stage, and the stage of applying low voltage or turning OFF is called OFF stage. In the ON stage, when the electric field intensity of the gap is large enough, the dielectric property of the dielectric liquid between the gaps is destroyed, and then discharge occurs, and the high temperature and high pressure generated by the discharge can evaporate or melt the workpiece material, so as to achieve the purpose of removing the workpiece material. During the OFF phase, the insulating properties of the dielectric liquid can be restored to facilitate the next discharge. The drawing processing aim is finally achieved by repeating the operation.
In the electric discharge machining process, the energy consumption of the precise electric discharge machining power supply is always a large cost expenditure, and how to perform energy-saving control on the precise electric discharge machining power supply is a difficult problem to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is how to carry out energy-saving control to the accurate discharge machining power.
In order to solve the technical problem, the technical scheme of the utility model is to provide an energy-saving control device for a precision discharge machining power supply, which comprises a direct-current power supply, wherein one end of the direct-current power supply is connected with one end of a machining power supply control unit, the other end of the machining power supply control unit is connected with an electrode, and the other end of the direct-current power supply is connected with a workpiece;
one end of a first energy-saving device is connected with the processing power supply control unit, the other end of the first energy-saving device is connected with one end of a first selection switch, and the other end of the first selection switch is connected with the other end of the direct-current power supply;
one end of the second energy-saving device is connected with the processing power supply control unit, the other end of the second energy-saving device is connected with one end of a second selection switch, and the other end of the second selection switch is connected with the other end of the direct-current power supply.
Preferably, the dc power supply is a dc power supply providing an adjustable voltage.
More preferably, the voltage adjustable range of the direct current power supply is 60-350V.
Preferably, the first energy saving device is a high-efficiency carbon deposition prevention circuit for preventing a large reactive current from occurring during carbon deposition.
Preferably, the second power saving means is a single pulse detection circuit for controlling the detected abnormal pulse.
More preferably, the first energy saving device comprises a carbon deposition control unit for judging whether carbon is deposited in the machining process, the negative electrode of the first diode is connected with the machining power supply control unit, the positive electrode of the first diode is connected with one end of the carbon deposition control unit, the other end of the carbon deposition control unit is connected with one end of a sensor, and the sensor is connected with the electrode and one end of the first selector switch.
More preferably, the second energy saving device includes a second diode, a positive electrode of the second diode is connected to the processing power supply control unit, a negative electrode of the second diode is connected to one end of the pulse control unit and the charge release circuit, another end of the pulse control unit is connected to the pulse state detection unit, the pulse state detection unit is further connected to one end of the second selection switch, and the charge release circuit is further connected to the processing power supply control unit and another end of the dc power supply.
Further, the charge releasing loop is formed by connecting a switching tube and a third diode.
Furthermore, the switch tube is a field effect tube.
And furthermore, the grid electrode of the switch tube is connected with the cathode of the second diode, the drain electrode of the switch tube is connected with the processing power supply control unit, the source electrode of the switch tube is connected with the anode of the third diode, and the cathode of the third diode is connected with the other end of the direct current power supply.
The utility model provides an energy-saving control device for a precision discharge machining power supply, which relates to two energy-saving devices, one is a high-efficiency carbon deposition prevention circuit used for preventing reactive heavy current from occurring during carbon deposition so as to achieve the purpose of energy conservation; the other is to adopt a single pulse detection circuit for controlling the detected abnormal pulse to achieve the purpose of energy saving. One set of energy-saving device or two sets of energy-saving devices can be selected to work through the on-off control of the selector switch.
Compared with the prior art, the utility model provides a precision electric discharge machining power energy-saving control device has following beneficial effect:
1. on the basis of not influencing the normal work of the electric discharge machining power supply, the energy consumption in the electric discharge machining process is reduced, and the cost is saved.
2. The system is compatible with two sets of energy-saving devices, and one set of energy-saving device or two sets of energy-saving devices can be selected to work through the on-off control of the selection switch. When one energy-saving device fails, the other energy-saving device can be used for jacking, and the system has high reliability.
3. The two sets of energy-saving devices have different working principles, and can control the energy consumption in the discharge machining process from two different aspects, thereby achieving better energy-saving effect.
Drawings
Fig. 1 is a schematic structural diagram of an energy-saving control device for a precision electrical discharge machining power supply according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the operation of only the first economizer;
fig. 3 is a schematic diagram of the second economizer when operating only.
Detailed Description
Fig. 1 is a schematic structural diagram of a precise electrical discharge machining power supply energy-saving control device provided in this embodiment, and the precise electrical discharge machining power supply energy-saving control device is composed of a direct-current power supply 1, a machining power supply control unit 2, an electrode 3, a workpiece 4, a first energy-saving device 7, a first selection switch 8, a second energy-saving device 5, a second selection switch 6, and the like.
In this embodiment, the dc power supply 1 can provide an adjustable voltage, and specifically, the voltage of the dc power supply 1 is dc adjustable between 60V and 350V.
The positive output end of the direct current power supply 1 is connected with one end of the processing power supply control unit 2, the other end of the processing power supply control unit 2 is connected with the electrode 3, the negative output end of the direct current power supply 1 is connected with the workpiece 4, and the four parts are connected to form a circuit system which provides a normal discharge processing function.
The system of the embodiment also relates to two energy-saving devices, namely a first energy-saving device 7 and a second energy-saving device 5. The first energy-saving device 7 is an AL/LD high-efficiency carbon-proof circuit and is used for preventing reactive large current from occurring during carbon deposition, and the purpose of energy conservation is achieved. The second energy-saving device 5 adopts a single pulse detection circuit and is used for controlling the detected abnormal pulse so as to achieve the purpose of energy saving.
The first energy-saving device 7 and the second energy-saving device 5 are respectively connected in series with the first selection switch 8 and the second selection switch 6, and then are connected in parallel between the processing power supply control unit 2 and the negative electrode output end of the direct current power supply 1, and one energy-saving device or both energy-saving devices can be selected to work through the on-off control of the first selection switch 8 and the second selection switch 6.
Specifically, one end of the first energy saving device 7 is connected to the processing power supply control unit 2, the other end of the first energy saving device 7 is connected to one end of a first selection switch 8, and the other end of the first selection switch 8 is connected to the negative electrode output end of the direct current power supply 1. One end of the second energy-saving device 5 is connected with the processing power supply control unit 2, the other end of the second energy-saving device 5 is connected with one end of a second selection switch 6, and the other end of the second selection switch 6 is connected with the negative electrode output end of the direct-current power supply 1.
When the first selector switch 8 is closed and the second selector switch 6 is open, only the first economizer 7 is operated, and the second economizer 5 is not operated. When the first selector switch 8 is turned off and the second selector switch 6 is turned on, only the second economizer 5 operates, and the first economizer 7 does not operate. When the first selector switch 8 and the second selector switch 6 are both closed, the first economizer 7 and the second economizer 5 are both operated.
Fig. 2 is a schematic diagram of the first energy saving device during operation, and the first energy saving device 7 is composed of a first diode 100, a carbon deposition control unit 101 for determining whether carbon is deposited during the processing, a sensor 102, and other elements.
The cathode of the first diode 100 is connected with the processing power supply control unit 2, the anode of the first diode 100 is connected with one end of the carbon deposition control unit 101, the other end of the carbon deposition control unit 101 is connected with one end of the sensor 102, and the sensor 102 is connected with the electrode 3 and one end of the first selection switch 8.
In this embodiment, the carbon deposition control unit 101 is an AL/LD control unit.
The working principle of the first energy saving device 7 is as follows:
after the first selection switch 8 is turned on, the sensor 102 quickly detects the inter-electrode gap discharge and sends the inter-electrode gap discharge to the AL/LD control unit, the AL/LD control unit obtains working current and voltage signals, judges whether carbon is deposited in the machining process through a series of operation processing according to the signals, adjusts and processes the AL/LD signals if the carbon is deposited, and feeds back the signals to the machining power supply control unit 2 through the first diode 100 in time, so that the system does not generate reactive current, the power loss is reduced, and the energy-saving effect is achieved. The first diode 100 functions to prevent a signal of the processing power supply control unit 2 from being erroneously transmitted to the AL/LD control unit.
As a preferred embodiment, the first selector switch 8 is a high-speed switch capable of cutting off the circuit at high speed.
The second energy-saving control unit 5 includes a detector for detecting a machining gap state, and a controller; the discharge pulse between the machining gaps is recognized as three states depending on the detection data of the detector: arcing short circuit, normal discharge, no discharge; whether the machining power supply control unit 2 issues an instruction is determined based on the three states.
It is to be noted that the detector of the second economizer control device 5 must be installed near the machining position.
Fig. 3 is a schematic diagram of the second energy saving device 5 when only the second energy saving device operates, and the second energy saving device is composed of elements such as a second diode 200, a pulse control unit 201, a pulse state detection unit 202, a switching tube 203, and a third diode 204.
As a preferred embodiment, the switching tube 203 is a field effect tube.
The anode of the second diode 200 is connected with the processing power supply control unit 2, the cathode of the second diode 200 is connected with one end of the pulse control unit 201 and the grid of the switch tube 203, the drain of the switch tube 203 is connected with the processing power supply control unit 2, the source of the switch tube 203 is connected with the anode of the third diode 204, the cathode of the third diode 204 is connected with the cathode output end of the direct current power supply 1, the other end of the pulse control unit 201 is connected with one end of the pulse state detection unit 202, and the other end of the pulse state detection unit 202 is connected with one end of the second selection switch 6.
The pulse state detection unit 202 includes a high-precision comparator, and the comparator is connected to a reference voltage.
The working principle of the second energy saving device 5 is as follows:
the switch tube 203 and the third diode 204 form a charge releasing loop. The pulse control unit 201 detects the current and voltage between the electrode 3 and the workpiece 4 in the machining gap by the second selector switch 6 and the pulse state detection unit 202, and determines the discharge pulse into three states by using these current and voltage and a series of processes, respectively: A. non-breakdown ineffective pulse, B, normal breakdown effective pulse, C, short circuit arc discharge harmful pulse. Wherein, A, C two kinds of pulses discharge through the charge release circuit, feed back to processing power supply control unit 2 through second diode 200 simultaneously, only B type pulse is through processing power supply control unit 2 to the effective response action of mechanical servo of control, reaches energy-conserving effect.
As a preferred embodiment, the second selector switch 6 is a high-speed switch capable of cutting off the circuit at high speed.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be termed a second element, and, similarly, a second element may be termed a first element, without departing from the scope of example embodiments.
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the present invention in any way and in any way, and it should be understood that modifications and additions may be made by those skilled in the art without departing from the method of the present invention, and such modifications and additions are also considered to be within the scope of the present invention. Those skilled in the art can make various changes, modifications and evolutions equivalent to those made by the above-disclosed technical content without departing from the spirit and scope of the present invention, and all such changes, modifications and evolutions are equivalent embodiments of the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes to the above embodiments according to the actual technology of the present invention are also within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a precision electric discharge machining power energy-saving control device which characterized in that: the machining device comprises a direct-current power supply (1), wherein one end of the direct-current power supply (1) is connected with one end of a machining power supply control unit (2), the other end of the machining power supply control unit (2) is connected with an electrode (3), and the other end of the direct-current power supply (1) is connected with a workpiece (4);
one end of a first energy-saving device (7) is connected with the processing power supply control unit (2), the other end of the first energy-saving device (7) is connected with one end of a first selection switch (8), and the other end of the first selection switch (8) is connected with the other end of the direct current power supply (1);
one end of a second energy-saving device (5) is connected with the processing power supply control unit (2), the other end of the second energy-saving device (5) is connected with one end of a second selection switch (6), and the other end of the second selection switch (6) is connected with the other end of the direct current power supply (1).
2. The precise electric discharge machining power supply energy-saving control device as claimed in claim 1, characterized in that: the direct current power supply (1) is a direct current power supply for providing adjustable voltage.
3. The precise electric discharge machining power supply energy-saving control device as claimed in claim 2, characterized in that: the voltage adjustable range of the direct current power supply (1) is 60-350V.
4. The precise electric discharge machining power supply energy-saving control device as claimed in claim 1, characterized in that: the first energy-saving device (7) is a high-efficiency carbon deposition prevention circuit for preventing large reactive current during carbon deposition.
5. The precise electric discharge machining power supply energy-saving control device as claimed in claim 1, characterized in that: the second energy saving means (5) is a single pulse detection circuit for controlling the detected abnormal pulse.
6. The precise electric discharge machining power supply energy-saving control device as claimed in claim 4, characterized in that: the first energy-saving device (7) comprises a carbon deposition control unit (101) used for judging whether carbon is deposited in the machining process, the negative electrode of a first diode (100) is connected with the machining power supply control unit (2), the positive electrode of the first diode (100) is connected with one end of the carbon deposition control unit (101), the other end of the carbon deposition control unit (101) is connected with one end of a sensor (102), and the sensor (102) is connected with one end of the electrode (3) and one end of a first selection switch (8).
7. The precise electric discharge machining power supply energy-saving control device as claimed in claim 5, characterized in that: the second energy-saving device (5) comprises a second diode (200), the anode of the second diode (200) is connected with the processing power supply control unit (2), the cathode of the second diode (200) is connected with one end of a pulse control unit (201) and a charge release loop, the other end of the pulse control unit (201) is connected with a pulse state detection unit (202), the pulse state detection unit (202) is further connected with one end of a second selection switch (6), and the charge release loop is further connected with the processing power supply control unit (2) and the other end of the direct current power supply (1).
8. The precise electric discharge machining power supply energy-saving control device of claim 7, characterized in that: the charge releasing loop is formed by connecting a switching tube (203) and a third diode (204).
9. The precise electric discharge machining power supply energy-saving control device of claim 8, characterized in that: the switch tube (203) is a field effect tube.
10. The precise electric discharge machining power supply energy-saving control device of claim 9, characterized in that: the grid electrode of the switch tube (203) is connected with the negative electrode of the second diode (200), the drain electrode of the switch tube (203) is connected with the processing power supply control unit (2), the source electrode of the switch tube (203) is connected with the positive electrode of the third diode (204), and the negative electrode of the third diode (204) is connected with the other end of the direct current power supply (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275562.8U CN211661268U (en) | 2020-03-09 | 2020-03-09 | Energy-saving control device for precision discharge machining power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275562.8U CN211661268U (en) | 2020-03-09 | 2020-03-09 | Energy-saving control device for precision discharge machining power supply |
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| CN211661268U true CN211661268U (en) | 2020-10-13 |
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| CN202020275562.8U Active CN211661268U (en) | 2020-03-09 | 2020-03-09 | Energy-saving control device for precision discharge machining power supply |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220809 Address after: Room 1838, No. 25, Lane 38, Caoli Road, Fengjing Town, Jinshan District, Shanghai, 201502 Patentee after: Shanghai hanba Electromechanical Technology Co.,Ltd. Address before: 201501 room 103, building 2, No. 689, Huandong Third Road, Fengjing town, Jinshan District, Shanghai Patentee before: SHANGHAI DIWODI PRECISION MACHINERY CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 1838, No. 25, Lane 38, Caoli Road, Fengjing Town, Jinshan District, Shanghai, 201502 Patentee after: Shanghai Hanba Electromechanical Equipment Co.,Ltd. Address before: Room 1838, No. 25, Lane 38, Caoli Road, Fengjing Town, Jinshan District, Shanghai, 201502 Patentee before: Shanghai hanba Electromechanical Technology Co.,Ltd. |