CN208262028U - A kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply - Google Patents
A kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply Download PDFInfo
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- CN208262028U CN208262028U CN201820805432.3U CN201820805432U CN208262028U CN 208262028 U CN208262028 U CN 208262028U CN 201820805432 U CN201820805432 U CN 201820805432U CN 208262028 U CN208262028 U CN 208262028U
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Abstract
The utility model relates to a kind of Fine and Deep Hole electrolytic machining devices based on high frequency positive negative pulse stuffing power supply, belong to Electrolyzed Processing field.The problem of in order to remove the indissoluble substance formed by cell reaction on tool-electrode surface.Workpiece is equipped in the electrolytic bath；The top of the workpiece is equipped with tool-electrode；The tool-electrode is fixedly mounted on the lead screw of lathe；The movement driving end of the tool-electrode is connected with the driving end of the stepper motor；The power supply signal input of the tool-electrode is connected with the negative power supply signal output end of the high frequency positive negative pulse stuffing power supply；The cathode power supply signal output end of the high frequency positive negative pulse stuffing power supply is connected with the power supply signal input of the workpiece；The tool-electrode is connected with electrolyte entrance end；The electrolyte entrance end is connected with the electrolyte outlet end of the electrolyte circulation system.The utility model can effectively improve the machining accuracy of Fine and Deep Hole, reduce short circuit and the loss of tool-electrode, propose the service performance of Fine and Deep Hole structure.
Description
Technical field
The utility model relates to a kind of Fine and Deep Hole electrolytic machining devices based on high frequency positive negative pulse stuffing power supply, belong to electrolysis and add
Work field.
Background technique
Deep hole machining is to process the pass consistent with tool-electrode section by electrochemical action, and processing is special
Point is: tool-electrode is lossless, finished surface without flow harden layer, aperture does not have burr and overlap, not by material property
Limitation, surface quality are good.But short circuit in the prior art, is caused because of the indissoluble substance that cell reaction is formed on tool-electrode surface
Occur, to influence machining accuracy.
Utility model content
The utility model is in order to remove the indissoluble substance formed by cell reaction on tool-electrode surface, the technology taken
Scheme is as follows:
A kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply, including electrolytic bath, workpiece, tool electricity
Pole, stepper motor, high frequency positive negative pulse stuffing power supply, electrolyte circulation system, electrolyte entrance end and lathe；
Workpiece is equipped in the electrolytic bath；The top of the workpiece is equipped with tool-electrode；The fixed peace of the tool-electrode
On the lead screw of lathe；The movement driving end of the tool-electrode is connected with the driving end of the stepper motor；The tool
The power supply signal input of electrode is connected with the negative power supply signal output end of the high frequency positive negative pulse stuffing power supply；The high frequency is just
The cathode power supply signal output end of negative pulse power supply is connected with the power supply signal input of the workpiece；The tool-electrode and electricity
Liquid arrival end is solved to be connected；The electrolyte entrance end is connected with the electrolyte outlet end of the electrolyte circulation system.
The high frequency positive negative pulse stuffing power supply includes transformer, rectification circuit, filter circuit, chopper circuit, current control electricity
Road, central controller, impulse generator drive isolation circuit and servo drive；
Electric power signal input terminal and the three-phase alternating current of the transformer are electrically connected；The electric power signal output end of the transformer
It is connected with the electric power signal input terminal of the rectification circuit；The electric power signal output end and the filter circuit of the rectification circuit
Electric power signal input terminal be connected；The electric power signal output end of the filter circuit and the electric power signal of the chopper circuit input
End is connected；The electric power signal output end of the chopper circuit is connected with the electric power signal input terminal of the current control circuit；Institute
State current control circuit electric power signal output end be the high frequency positive negative pulse stuffing power supply cathode power supply signal output end and
Negative power supply signal output end；
The current signal of the current control circuit after signal averaging with the central controller current feedback signal
Input terminal is connected；The servo drive signal output end of the central controller and the driving signal of the servo drive input
End is connected；The driving signal output end of the servo drive is connected with the driving signal input of the stepper motor；Institute
State the pulse generation control signal output of central controller and the pulse generation control signal input of the impulse generator
It is connected；The pulse signal output end of the impulse generator is connected with the pulse signal input terminal of isolated drive circuit；It is described every
It is connected from the pulse signal output end of driving circuit with the pulse signal input terminal of the chopper circuit；
The high frequency positive negative pulse stuffing power supply further includes man-machine interface display screen；The display control of the man-machine interface display screen
Signal input part is connected with the display signal output end of the central controller.
Further, the chopper circuit uses the H-bridge circuit structure being made of four MOSFET pipes.
Further, the tool-electrode uses tubular structure, and is coated with insulating layer on the outside of the tool-electrode.
Further, the material of the tool-electrode is titanium alloy.
The utility model has the effect that the utility model relates to one kind based on the positive and negative arteries and veins of high frequency compared with prior art
The Fine and Deep Hole electrolytic machining device for rushing power supply can effectively exclude interelectrode gap by using high frequency positive negative pulse stuffing power supply
Internal dissolved waste, heat of solution, bubble reduce tool-electrode surface and generate megohmite insulant, avoid short-circuit generation, processing can be improved
The characteristics such as process stability and tool-electrode service life height subtract it is characterized in that effectively improving the machining accuracy of Fine and Deep Hole
The loss of few short circuit and tool-electrode, proposes the service performance of Fine and Deep Hole structure.
Detailed description of the invention
Fig. 1 is that a kind of Fine and Deep Hole electrolytic machining device structure based on high frequency positive negative pulse stuffing power supply described in the utility model is shown
It is intended to；
Fig. 2 is the schematic diagram of positive negative pulse stuffing waveform described in the utility model；
Fig. 3 is the schematic diagram of high frequency positive negative pulse stuffing power supply described in the utility model.
Specific embodiment
Specific embodiment: illustrate present embodiment in conjunction with Fig. 1 to Fig. 3: present embodiment proposes described one kind and is based on
The Fine and Deep Hole electrolytic machining device of high frequency positive negative pulse stuffing power supply,
A kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply, including electrolytic bath 1, workpiece 2, tool
Electrode 3, stepper motor 4, high frequency positive negative pulse stuffing power supply 5, electrolyte circulation system 6, electrolyte entrance end 7 and lathe；
Workpiece 2 is equipped in the electrolytic bath 1；The top of the workpiece 2 is equipped with tool-electrode 3；The tool-electrode 3 is solid
Dingan County is on the lead screw of lathe；The movement driving end of the tool-electrode 3 is connected with the driving end of the stepper motor 4；Institute
The power supply signal input for stating tool-electrode 3 is connected with the negative power supply signal output end of the high frequency positive negative pulse stuffing power supply 5；Institute
The cathode power supply signal output end for stating high frequency positive negative pulse stuffing power supply 5 is connected with the power supply signal input of the workpiece 2；The work
Tool electrode 3 is connected with electrolyte entrance end 7；The electrolyte outlet at the electrolyte entrance end 7 and the electrolyte circulation system 6
End is connected.
The high frequency positive negative pulse stuffing power supply 5 includes transformer, rectification circuit, filter circuit, chopper circuit, current control electricity
Road, central controller, impulse generator drive isolation circuit and servo drive；
Electric power signal input terminal and the three-phase alternating current of the transformer are electrically connected；The electric power signal output end of the transformer
It is connected with the electric power signal input terminal of the rectification circuit；The electric power signal output end and the filter circuit of the rectification circuit
Electric power signal input terminal be connected；The electric power signal output end of the filter circuit and the electric power signal of the chopper circuit input
End is connected；The electric power signal output end of the chopper circuit is connected with the electric power signal input terminal of the current control circuit；Institute
State current control circuit electric power signal output end be the high frequency positive negative pulse stuffing power supply 5 cathode power supply signal output end and
Negative power supply signal output end；
The current signal of the current control circuit after signal averaging with the central controller current feedback signal
Input terminal is connected；The servo drive signal output end of the central controller and the driving signal of the servo drive input
End is connected；The driving signal output end of the servo drive is connected with the driving signal input of the stepper motor 4；Institute
State the pulse generation control signal output of central controller and the pulse generation control signal input of the impulse generator
It is connected；The pulse signal output end of the impulse generator is connected with the pulse signal input terminal of isolated drive circuit；It is described every
It is connected from the pulse signal output end of driving circuit with the pulse signal input terminal of the chopper circuit；
The high frequency positive negative pulse stuffing power supply 5 further includes man-machine interface display screen；The display control of the man-machine interface display screen
Signal input part processed is connected with the display signal output end of the central controller.
The chopper circuit uses the H-bridge circuit structure being made of four MOSFET pipes.
The tool-electrode 3 uses tubular structure, and is coated with insulating layer on the outside of the tool-electrode 3.
The material of the tool-electrode 3 is titanium alloy.
On Fine and Deep Hole electrolytic machining device, bending Fine and Deep Hole Electrolyzed Processing is carried out using high frequency positive negative pulse stuffing power supply,
In deep hole electrochemical machining process, tool-electrode 3 is connect with the lead screw of lathe, tool-electrode 3 by stepper motor 4 drive constantly into
Enter inside workpiece 2；The tool-electrode 3 is connected on lathe to be connect with electrolyte circulation system 6；The tool-electrode 3
Outside is coated with insulating layer, and electrolysis occurs over just 3 Electrolyzed Processing end face of tool-electrode；The Fine and Deep Hole Electrolyzed Processing dress
It sets, is processed, can be effectively improved in electrochemical machining process using high frequency positive negative pulse stuffing power supply 5, what 3 surface of tool-electrode was formed
Nonmetallic oxidation film, and then short circuit phenomenon in Electrolyzed Processing is reduced, bent hole Electrolyzed Processing stability is improved, processing essence is improved
Degree improves tool-electrode service life.
The working principle and process of the utility model: in Fine and Deep Hole electrochemical machining process, when pulse power conducting, arteries and veins
Rush several times even tens times that electric current is equivalent to conventional DC electric current, under high instantaneous current density decomposes metal from workpiece
Come, bubble is generated on cathode；When pulse power shutdown, the neighbouring anodic solution in anode region stops, and the neighbouring bubble of cathode is no longer
Increase, under the electrolyte effect of constant flow, dissolved waste, heat of solution, bubble are excluded inside interelectrode gap, will be had
High pulse current density is continued to use conducive to the next pulse period；Negative-going pulse appropriate can be hindered with removal tool surface
The effect of the material layer of cell reaction, the mode alternately processed using direct impulse and negative-going pulse, is carried out using direct impulse
Workpiece electrodissolution, using negative-going pulse remove hinder cell reaction indissoluble substance, can make Electrolyzed Processing continuous and effective into
Row avoids the generation of short circuit.
H bridge that major loop is made of four MOSFET pipes realizes positive negative pulse stuffing output, and isolated drive circuit is by signal isolation
And amplify driving MOSFET pipe, it is ensured that rising edge of a pulse and pulse falling edge short enough, by detection circuit, protection power source,
Ensure current density can be within the scope of normal process, machining voltage U is the smaller the better, to guarantee minimum clearance.It is electrolysed in Fine and Deep Hole
In processing, current density is generally in 400A/cm2-800A/cm2, power supply is selected as the 24V pulse power, meeting deep hole machining
On the basis of voltage, current density is improved, efficiency can be improved.
In the circuit structure of the utility model, pulse control method, driving method involved in central controller etc.
Corresponding control methods are conventional control methods, such as PWM control in the prior art, and the utility model is only to Fine and Deep Hole electrolysis
The hardware configuration of processing unit (plant) improves, and does not adjust to any control method involved in Fine and Deep Hole electrolytic machining device
Whole or improvement.
A kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply described in the utility model do not limit to
Specific structure described in above-mentioned each embodiment can also be reasonable group of feature described in above-mentioned each embodiment
It closes.
Claims (5)
1. a kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply, which is characterized in that including electrolytic bath
(1), workpiece (2), tool-electrode (3), stepper motor (4), high frequency positive negative pulse stuffing power supply (5), electrolyte circulation system (6), electricity
Solve liquid arrival end (7) and lathe；
Workpiece (2) are equipped in the electrolytic bath (1)；The top of the workpiece (2) is equipped with tool-electrode (3)；The tool electricity
Pole (3) is fixedly mounted on the lead screw of lathe；The drive at movement the driving end and the stepper motor (4) of the tool-electrode (3)
Moved end is connected；The negative power supply of the power supply signal input of the tool-electrode (3) and the high frequency positive negative pulse stuffing power supply (5) is believed
Number output end is connected；The cathode power supply signal output end of the high frequency positive negative pulse stuffing power supply (5) and the power supply of the workpiece (2) are believed
Number input terminal is connected；The tool-electrode (3) is connected with electrolyte entrance end (7)；The electrolyte entrance end (7) and the electricity
The electrolyte outlet end for solving fluid circulation (6) is connected.
2. a kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply according to claim 1, feature
It is, the high frequency positive negative pulse stuffing power supply (5) includes transformer, rectification circuit, filter circuit, chopper circuit, current control electricity
Road, central controller, impulse generator drive isolation circuit and servo drive；
Electric power signal input terminal and the three-phase alternating current of the transformer are electrically connected；The electric power signal output end of the transformer and institute
The electric power signal input terminal for stating rectification circuit is connected；The electric power signal output end of the rectification circuit and the electricity of the filter circuit
Energy signal input part is connected；The electric power signal input terminal phase of the electric power signal output end of the filter circuit and the chopper circuit
Even；The electric power signal output end of the chopper circuit is connected with the electric power signal input terminal of the current control circuit；The electricity
The electric power signal output end of flow control circuit is the cathode power supply signal output end of the high frequency positive negative pulse stuffing power supply (5) and bears
Pole power supply signal output end；
The current signal of the current control circuit inputs after signal averaging with the central controller current feedback signal
End is connected；The driving signal input phase of the servo drive signal output end of the central controller and the servo drive
Even；The driving signal output end of the servo drive is connected with the driving signal input of the stepper motor (4)；It is described
The pulse generation control signal input phase of the pulse generation control signal output of central controller and the impulse generator
Even；The pulse signal output end of the impulse generator is connected with the pulse signal input terminal of isolated drive circuit；The isolation
The pulse signal output end of driving circuit is connected with the pulse signal input terminal of the chopper circuit；
The high frequency positive negative pulse stuffing power supply (5) further includes man-machine interface display screen；The display control of the man-machine interface display screen
Signal input part is connected with the display signal output end of the central controller.
3. a kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply according to claim 2, feature
It is, the chopper circuit uses the H-bridge circuit structure being made of four MOSFET pipes.
4. a kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply according to claim 1, feature
It is, the tool-electrode (3) uses tubular structure, and is coated with insulating layer on the outside of the tool-electrode (3).
5. a kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply according to claim 1, feature
It is, the material of the tool-electrode (3) is titanium alloy.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820805432.3U CN208262028U (en) | 2018-05-28 | 2018-05-28 | A kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820805432.3U CN208262028U (en) | 2018-05-28 | 2018-05-28 | A kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply |
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| CN208262028U true CN208262028U (en) | 2018-12-21 |
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| CN201820805432.3U Expired - Fee Related CN208262028U (en) | 2018-05-28 | 2018-05-28 | A kind of Fine and Deep Hole electrolytic machining device based on high frequency positive negative pulse stuffing power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814448A (en) * | 2019-11-25 | 2020-02-21 | 合肥工业大学 | Centralized rectification and voltage transformation distributed chopping pulse power supply |
| CN110977066A (en) * | 2019-11-25 | 2020-04-10 | 合肥工业大学 | Multichannel parallel trigger type high-frequency pulse power supply |
-
2018
- 2018-05-28 CN CN201820805432.3U patent/CN208262028U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814448A (en) * | 2019-11-25 | 2020-02-21 | 合肥工业大学 | Centralized rectification and voltage transformation distributed chopping pulse power supply |
| CN110977066A (en) * | 2019-11-25 | 2020-04-10 | 合肥工业大学 | Multichannel parallel trigger type high-frequency pulse power supply |
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Granted publication date: 20181221 Termination date: 20190528 |