CN204277141U - High speed and precision type electrochemical machine - Google Patents
High speed and precision type electrochemical machine Download PDFInfo
- Publication number
- CN204277141U CN204277141U CN201420436976.9U CN201420436976U CN204277141U CN 204277141 U CN204277141 U CN 204277141U CN 201420436976 U CN201420436976 U CN 201420436976U CN 204277141 U CN204277141 U CN 204277141U
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- negative electrode
- control system
- digital control
- electrochemical machine
- electrode
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Abstract
The utility model relates to a kind of high speed and precision type electrochemical machine, and it comprises: digital control system; Electrolyte; For to work pieces process and the negative electrode that can be immersed in electrolyte and positive electrode.Described processing machine also comprises eccentric wheel type structure, it is controlled by digital control system, to coordinate guide pillar to drive negative electrode to vibrate vertically in the electrolytic solution in dither mode with rocking arm contiguous block, wherein the conduction pulses electric current of negative electrode and vibration frequency are by digital control system controlling and adjustment.The utility model can guarantee that work pieces process is accurate.In addition, signal can be able to be avoided to be interfered by adopting real-time closed burst transmissions circuit, in real time supervision adds current situation and keep current stabilization, to reach maximum process velocity and best effort usefulness in man-hour.The utility model also enters level by artificial intelligence formula and adjusts into level amount in proportion according to the real-time status in gap, greatly improves precision and workpiece quality.
Description
Technical field
the utility model relates to electrochemical machine, and especially relating at a high speed and the electrochemical machine of high-accuracy technology, is a kind of higher level electrical-chemistry method.High speed and precision type electrochemical machine can be guaranteed to realize more high-precision image on tiny parts, also can carry out mold polish, makes the surface smoothness of workpiece more perfect.
Background technology
the Chinese patent application CN103252543A announced on August 21, in discloses a kind of electrochemical machining method and device of ultrathin workpieces, belongs to precise fine electrical-chemistry method field.According to the prior art, utilize metal that the principle of Anodic dissolving occurs in the electrolytic solution, nano-electrode is used to carry out nanometer Electrolyzed Processing to the ultrathin workpieces be suspended in electrolyte liquid film, produce deformation due to the rigidity deficiency of workpiece self when avoiding clamping, cause problems such as producing form error.
traditional electrochemical machine automatically can not adjust the machined parameters of workpiece and enter level amount, but processing distance is fixing.And traditional electrochemical machine electrode bar is difficult to make the working clearance between machined electrode and workpiece diminish, thus greatly affect process velocity and surface flatness.
in addition, it is main electrolyte that traditional electrochemical machine adopts with phosphoric acid usually, not only harmful, waste liquid could discharge after also needing process, and adds man-hour, and electrolyte needs to be heated to 90 degree, processing electric current is also very huge, therefore for commercial Application pole not environmentally.
traditional electrochemical machine is only applied in surface of the work polishing usually, burr removing and lead angle, because its machining accuracy is poor, can not processed complex profile, and also cannot make precise and tiny shaping or Precision Machining.
Utility model content
for the above situation of prior art, one of the technical problems to be solved in the utility model is to provide a kind of electrochemical machine improving machining accuracy, and it comprises: digital control system; Electrolyte; For to work pieces process and the negative electrode that can be immersed in described electrolyte and positive electrode; Eccentric wheel type structure, it is controlled by described digital control system, to coordinate guide pillar to drive described negative electrode to vibrate vertically in described electrolyte in dither mode with rocking arm contiguous block, the conduction pulses electric current of wherein said negative electrode and vibration frequency are by described digital control system controlling and adjustment.Achieved by the program and realize high accuracy processing on tiny parts.Not only can realize at surface of the work polishing, burr removing and lead angle, but also improve machining accuracy and processed complex profile, and precise and tiny shaping or precision is done to workpiece add, guarantee that work pieces process is accurate.
according to a kind of improvement project of described electrochemical machine, described digital control system is processed into level amount to adjust corresponding machined parameters and to adjust thus according to the turn-on and turn-off ratio discharged between described negative electrode and positive electrode.Level is entered by adopting artificial intelligence formula, can adjust into level amount in proportion according to the real-time status of electric discharge, gap between electrode and workpiece is remained on certain enter in level, and by the adjustment vibration frequency of electrode and the switch time of pulse, to coordinate different processing requests.Preferably, described machined parameters comprises the conduction pulses electric current of described negative electrode, vibration frequency and/or the distance between described negative electrode and described workpiece.
according to a kind of improvement project of described electrochemical machine, described digital control system is used for using roughing parameter when processing and starting and implementing big current processing, automatically the distance between described negative electrode and workpiece is shortened when processing close completing, gap between described negative electrode and workpiece is remained in 5 μm, especially in 1 μm.Thus greatly improve precision and workpiece quality, to make surface of the work children carefully smooth.
according to the another kind of improvement project of described electrochemical machine, described negative electrode and/or positive electrode connect a discharge loop, leakage resistance of not limiting in this discharge loop, and adopt the electrical discharge wire of ultralow internal resistance.Decrease circuit power loss by this measure, energy consumption P convergence zero, power consumption is low, improves processing work efficiency.
according to another improvement project of described electrochemical machine, described digital control system comprises following device: technical grade computer, pulse-width modulation PWM switch chip, analog isolation device, modulus and digital to analog converter, insulated gate bipolar transistor IGBT, on-site programmable gate array FPGA and/or complex programmable logic device CPLD (Complex Programmable Logic Device)
.Can be connected by the burst transmissions circuit of real-time closed between described device.
preferably, described analog-digital converter is used for real time monitoring and adds the electric current flowing through described negative electrode and/positive electrode man-hour, to close by described digital control system the pulse signal being applied to described negative electrode and/positive electrode when there is electric arc.Digital control system real-time inspection electrode-feedback signal is with guard electrode, and when there is electric arc, control system can close the pulse signal being input to machined electrode in real time, and strengthens stop time next time.The automatic regulating voltage when the stop time starts, keeps stable by voltage.
according to a kind of improvement project of described electrochemical machine, described eccentric wheel type structure is removable eccentric wheel type structure, and/or described workpiece is positioned on described positive electrode.The vibration frequency of described negative electrode can be 10Hz to 100Hz, and amplitude can be little of 0.1mm, and replaceable eccentric wheel makes amplitude be increased to 0.6mm.Owing to adopting eccentric wheel design, electrode can failure of oscillation be not dynamic adding man-hour, can improve electrolytical exchange rate, thus efficiency is promoted.
according to another improvement project of described electrochemical machine, adopt NaNO
3
replace old-fashioned phosphoric acid solution and make electrolyte.This electrolyte is harmless, and waste liquid is without the need to specially treated, because only can produce hydrogen, NaOH and nitric acid metallic compound after electrolysis.Solution concentration can be 30g/L, and processing electric current can also in 100A.Other solution concentration and processing electric current parameter can certainly be taked.Therefore electrolyte use more capable of circulation, very environmental protection.
in a word, the beneficial effect that the utility model can bring comprises: can improve process velocity, artificial intelligence conveniently regulating and controlling, makes workpiece more accurate brighter and cleaner, can lower consumption simultaneously.
the utility model is told about in detail below in conjunction with embodiment shown in the drawings.
Accompanying drawing explanation
fig. 1 is the structure key diagram of high-accuracy type electrochemical machine of the present utility model,
fig. 2 is the circuit board of high-accuracy type electrochemical machine of the present utility model,
fig. 3 is the voltage oscillogram of high-accuracy type electrochemical machine of the present utility model,
fig. 4 is the discharge circuit figure of high-accuracy type electrochemical machine of the present utility model, and
fig. 5 is the maintenance potential circuit figure of high-accuracy type electrochemical machine of the present utility model.
Detailed description of the invention
figure 1 illustrates the schematic mechanical structure of high-accuracy type electrochemical machine of the present utility model, wherein this eccentric wheel type structure is assembled by bearing 1, driving shaft 2, eccentric shaft 3 and shell 6.In this eccentric wheel type structure, install a rocking arm contiguous block 7 additional does not have diastema to make eccentric wheel simultaneously, thus guarantees that electrode 5 line position driven by eccentric wheel is accurate.Here, moving electrode 5 may be with when diastema refers to that eccentric wheel rotates to move to left/right face, thus cause electrode 5 line misregistration in the vertical direction true.According to the utility model, during in order to ensure that eccentric wheel rotates, electrode 5 only has the vibration of above-below direction and does not move left and right, and use rocking arm contiguous block 7 connecting electrode 5, and rocking arm contiguous block 7 coordinates guide pillar 4 that electrode 5 can not be moved left and right.By which, achieving eccentric wheel does not have diastema, thus can reduce the machining gap between electrode 5 and workpiece to be machined, and keep electric current unimpeded and improve electrolytical exchange rate.Usually, the electrode 5 of vibration is negative electrode, and processed workpiece is positioned on anode and (does not illustrate in the drawings).
according to the utility model, above-mentioned eccentric wheel type respective outer side edges guide pillar 4 can make electrode 5 move vertically by given vibration frequency, thus can realize by dither mode processing work, be wherein applied to the pulse current of electrode 5, the vibration frequency of this electrode 5 and Oscillation Amplitude all by digital control system controlling and adjustment.Moving electrode 5 up-down vibration can be with when eccentric wheel rotates at every turn.For ease of using, described eccentric wheel type structure preferably can adopt removable eccentric wheel type structure.It can certainly be fixing structure.
mechanically, drive through the transmission device of such as belt the screw rod be positioned at above Fig. 1 by motor, cause eccentric wheel to coordinate guide pillar 4 to move up and down, thus also drive the electrode 5 be connected with eccentric wheel to move up and down.Like this, the vibrational structure of negative electrode 5 have employed the eccentric wheel design of preferably changeable type, eccentric wheel do not have diastema ensure that workpiece can carry out high accuracy processing exactly.On the other hand, the vibration frequency of negative electrode 5 is preferably 10Hz to 100Hz, and amplitude is preferably 0.1mm, and changeable type eccentric wheel can make amplitude be increased to 0.6mm.Owing to adopting eccentric wheel design, electrode can failure of oscillation be not dynamic adding man-hour, can improve electrolytical exchange rate, to improve working (machining) efficiency.
according to the intelligent high-accuracy type electrochemical machine of height of the present utility model, it adopts NaNO
3
solution makes electrolyte.This electrolyte is harmless, after electrolysis, only can produce hydrogen, NaOH and nitric acid metallic compound, and waste liquid is also without the need to specially treated.Electrolyte is capable of circulation use again and also power consumption low, therefore very environmental protection.This is very favorable, and pole is suitable for the industrial use of environmental protection.Such as, the solution concentration of this electrolyte can be preferably 30g/L, and processing electric current can also preferably in 100A.
in the frame for movement shown in Fig. 1, can implement following electrochemical machine according to the utility model, it comprises: digital control system; Electrolyte; For to work pieces process and the negative electrode 5 that can be immersed in described electrolyte and positive electrode.Described electrochemical machine also comprises eccentric wheel type structure 1,2,3,6, it is controlled by described digital control system, to coordinate guide pillar 4 to drive described negative electrode 5 to vibrate vertically in described electrolyte in dither mode with rocking arm contiguous block 7, the conduction pulses electric current of wherein said negative electrode 5 and vibration frequency are by described digital control system controlling and adjustment.
fig. 2 shows the concrete configuration of the circuit board of high-accuracy type electrochemical machine of the present utility model.In fig. 2, in the discharge loop that described negative electrode and/or positive electrode connect, be not provided with current-limiting resistance, and select the electrical discharge wire of ultralow internal resistance, and with the discharge source of the shortest distance join workpiece and high-accuracy type electrochemical machine inside.According to General Physics knowledge, according to P=I
2
r, when R level off to zero time, energy consumption P is convergence zero also.Preferably, circuit can be equipped with one and extra supply voltage, to play the effect of the voltage between stabilized electrodes and workpiece gap.The printed wire of circuit board adopts the burst transmissions circuit of real-time closed whole or in part.For ensureing safety, the machine is provided with insulation board, and operating personnel can not be made like this in operation is carried out to get an electric shock easily.
fig. 4 shows the circuit diagram by digital control system control electrode electric discharge of high-accuracy type electrochemical machine of the present utility model, and it belongs to a part for digital control system of the present utility model.The digital control system of the machine comprises: technical grade computer, PWM switch chip, analog isolation device, modulus and digital to analog converter, insulated gate bipolar transistor IGBT, on-site programmable gate array FPGA module and/or complex programmable logic device CPLD.Digital control system can avoid signal to be interfered by the burst transmissions circuit of real-time closed, thus controlled working electrode reaches accurate machining voltage and mechanical line position.Carry out the eccentric wheel type structure 1,2,3,6 shown in control chart 1 by the DC PWM switch-mode regulation printing board PCB shown on the left of Fig. 4, thus control the mechanical line position of negative electrode 5.In this case, eccentric position is controlled by this DC PWM switch-mode regulation printing board PCB, and pcb board discharges according to eccentric position control electrode at that time.According to an embodiment, eccentric wheel position is higher, and the voltage of releasing is larger.
as shown in Figure 4, the HP control circuit of digital control system controls to be applied to the negative electrode 5 that negative electrode V-(corresponds to Fig. 1) on voltage, the LP control circuit of digital control system controls the voltage be applied on positive electrode V+.System power supply can adopt the three-phase 380V power supply of AC network, and is obtained the alternating voltage of 10V by transformer, then by rectification, the DC voltage of about 21V is supplied to described DC PWM switch-mode regulation printed circuit board (PCB).
in the discharge circuit shown in Fig. 4, described digital control system is processed into level amount to adjust corresponding machined parameters and to adjust thus according to the turn-on and turn-off ratio discharged between negative electrode V-and positive electrode V+.Described machined parameters comprises the conduction pulses electric current of described negative electrode V-, vibration frequency and/or described negative electrode V-and the described positive electrode V+(workpiece also namely on it) between distance.
by the control of described digital control system to the electrode discharge shown in the eccentric wheel shown in Fig. 1 and Fig. 4, realize a kind of so-called artificial intelligence formula and enter level, also can according to ON time T during electrode discharge
on
with turn-off time T
off
real-time status ratio adjust into level amount and automatically adjust machined parameters.Such as, when starting, use roughing parameter, implement big current, two-forty is processed.When being then automatically adjusted to fining-off state close to when completing.Now electric current is turned down, and greatly improves precision and workpiece quality amount.Such as, automatically shorten distance between described negative electrode and workpiece close to when completing processing, the gap between described negative electrode and workpiece is remained in 5 μm, especially in 1 μm, by Control of Voltage and be retained to 10V.Like this, the machine also can carry out surface of the work polishing according to demand, and fineness is more perfect.Under fining-off state, because the gap between negative electrode and workpiece is minimum, the shape of electrolysis position can be made identical with the shape of electrode, greatly improve precision and workpiece quality, to make surface of the work children carefully smooth.Should be appreciated that two electrode positions are nearer, processing effect better.After electrolysis completes, workpiece carries out the position of electrolysis can be identical with the shape of electrode.Fall as: a leg-of-mutton electrode, after machining, workpiece there will be a leg-of-mutton aperture.
in addition, in the embodiment above, for guaranteeing that electrode machining position is accurate, when described digital control system control eccentric runs, this eccentric number that touches needs to remain on extreme lower position.Here, the position that number refers to record negative electrode rod is touched, for calculating the processing distance between electrode.
the one that Fig. 5 shows high-accuracy type electrochemical machine of the present utility model keeps potential circuit figure, and it belongs to a part for digital control system of the present utility model.As shown in Figure 5, receive digital controlled signal by the digital to analog converter CONN4 shown in upper left side, the output signal of digital to analog converter CONN4 is imported into controller module SG3525A by analog isolation device ISO24 IS01.By IGBT circuit evolving driving power, flowed to the motor of control eccentric structure operation by terminals P 1 and P2.Here, IGBT circuit is made up of transistor Q1, diode HER507, resistance R10 and the electric capacity C16 shown on the right side of Fig. 5.
in the circuit shown in Fig. 5, the connected node between resistance 2K, 8K to controller module SG3525A input 1 between, laid electrode-feedback wire.This electrode-feedback wire can be used to the operating current situation of feedback electrode.
thus digital control system adds current situation in man-hour by utilizing analog-digital converter to supervise in real time, keep current stabilization.Digital control system real-time inspection electrode-feedback signal is with guard electrode, and when there is electric arc, control system can close the pulse signal being input to machined electrode in real time, and strengthens stop time next time.The automatic regulating voltage when the stop time starts, keeps stable by voltage.
fig. 3 schematically depict the voltage oscillogram of an example of high-accuracy type electrochemical machine of the present utility model.Especially, this waveform reflects position during electrode discharge, and wherein the voltage interval scale negative electrode 5 that starts to rise is shifting to the workpiece be positioned on positive electrode.Should be appreciated that this voltage controls to produce by above-mentioned digital control system, it depends on the voltage that eccentric position and digital control system apply to electrode.
should be appreciated that above embodiment shown in the drawings is only exemplary illustration of the present utility model but not has restricted.Each listed technical characteristic or scheme when not mutually conflict or contradiction also suitably can carry out multiple combination.
Claims (10)
1. an electrochemical machine, it comprises:
Digital control system;
Electrolyte;
For to work pieces process and the negative electrode (5) that can be immersed in described electrolyte and positive electrode;
It is characterized in that,
Described electrochemical machine also comprises:
Eccentric wheel type structure (1,2,3,6), it is controlled by described digital control system, to coordinate guide pillar (4) to drive described negative electrode (5) to vibrate vertically in described electrolyte in dither mode with rocking arm contiguous block (7), the conduction pulses electric current of wherein said negative electrode (5) and vibration frequency are by described digital control system controlling and adjustment.
2. electrochemical machine as claimed in claim 1, is characterized in that: described digital control system is processed into level amount to adjust corresponding machined parameters and to adjust thus according to the turn-on and turn-off ratio discharged between described negative electrode (5) and positive electrode.
3. electrochemical machine as claimed in claim 2, is characterized in that: described machined parameters comprises the conduction pulses electric current of described negative electrode (5), vibration frequency and/or the distance between described negative electrode (5) and described workpiece.
4. electrochemical machine as claimed in claim 2, it is characterized in that: described digital control system is used for using roughing parameter when processing and starting and implementing big current processing, processing the distance close to automatically shortening when completing between described negative electrode and workpiece, the gap between described negative electrode and workpiece is remained in 1 μm.
5. electrochemical machine as claimed in claim 2, is characterized in that: in described negative electrode (5) and/or positive electrode, connect a discharge loop, leakage resistance of not limiting in this discharge loop, and adopt the electrical discharge wire of ultralow internal resistance.
6. electrochemical machine as claimed in claim 1, it is characterized in that: described digital control system comprises following device: technical grade computer, pulse-width modulation PWM switch chip, analog isolation device, modulus and digital to analog converter, insulated gate bipolar transistor IGBT, on-site programmable gate array FPGA and/or complex programmable logic device CPLD, be connected by the burst transmissions circuit of real-time closed between described device.
7. electrochemical machine as claimed in claim 6, it is characterized in that: described analog-digital converter is used for real time monitoring and adds the electric current flowing through described negative electrode and/positive electrode man-hour, to close by described digital control system the pulse signal being applied to described negative electrode and/positive electrode when there is electric arc.
8. the electrochemical machine according to any one of claim 1-7, is characterized in that: described eccentric wheel type structure is removable eccentric wheel type structure, and/or described workpiece is positioned on described positive electrode.
9. the electrochemical machine according to any one of claim 1-7, is characterized in that: described electrolyte is NaNO
3electrolyte.
10. the electrochemical machine according to any one of claim 1-7, is characterized in that: the vibration frequency of described negative electrode (5) is 10Hz to 100Hz, and amplitude is 0.1mm-0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436976.9U CN204277141U (en) | 2014-08-05 | 2014-08-05 | High speed and precision type electrochemical machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436976.9U CN204277141U (en) | 2014-08-05 | 2014-08-05 | High speed and precision type electrochemical machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204277141U true CN204277141U (en) | 2015-04-22 |
Family
ID=52860337
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|---|---|---|---|
| CN201420436976.9U Expired - Fee Related CN204277141U (en) | 2014-08-05 | 2014-08-05 | High speed and precision type electrochemical machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211885A (en) * | 2017-06-29 | 2019-01-15 | 宁夏软件工程院有限公司 | A kind of electrolytic process manganese ion concentration measuring device and measurement method |
-
2014
- 2014-08-05 CN CN201420436976.9U patent/CN204277141U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211885A (en) * | 2017-06-29 | 2019-01-15 | 宁夏软件工程院有限公司 | A kind of electrolytic process manganese ion concentration measuring device and measurement method |
| CN109211885B (en) * | 2017-06-29 | 2021-03-12 | 宁夏软件工程院有限公司 | Manganese ion concentration measuring equipment and method in electrolytic process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20190805 |