CN108897047A - A kind of detection method and its device of the blind logical state of electrical-chemistry method aperture - Google Patents
A kind of detection method and its device of the blind logical state of electrical-chemistry method aperture Download PDFInfo
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- CN108897047A CN108897047A CN201810636652.2A CN201810636652A CN108897047A CN 108897047 A CN108897047 A CN 108897047A CN 201810636652 A CN201810636652 A CN 201810636652A CN 108897047 A CN108897047 A CN 108897047A
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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Abstract
The present invention relates to the detection methods and its device of a kind of blind logical state of electrical-chemistry method aperture.This method includes：The pairs of needle-shaped contact of metal more than the nozzle exit end setting of electro-hydraulic beam tube electrode is a pair of or a pair of, each pair of needle-shaped contact of metal includes anode contact and cathode contact；The electrical connection corresponding with the anode and cathode of additional power source respectively by the upper end of each pair of anode contact and cathode contact；The lower end of each pair of anode contact and cathode contact is placed in processing hole solution to return in liquid zone domain；Electro-hydraulic beam is when processing aperture on metal works, sensed current signal in external circuit between the anode and cathode of additional power source, when can't detect current signal within the response time, judge the processing hole on metal works for through-hole state, when detecting current signal, judge the processing hole on metal works for blind hole state.The detection method and its detection accuracy of device height, good reliability, it is easy to operate, have a wide range of application.
Description
Technical field
The present invention relates to electrical-chemistry method technical fields, more particularly to a kind of inspection of the blind logical state of electrical-chemistry method aperture
Survey method and device thereof.
Background technique
With the development of aerospace science and technology, computer and microelectric technique, new engineering material and medical technology, multiple
Need to process many deep pores, superdeep holes, even irregularly-shaped hole in miscellaneous Shape Parts.Compared with machining, electrical-chemistry method
It is not limited, is can be widely applied in the Deep-Hole Drilling Technology of complex parts by material hardness, toughness.
In general, the electrochemistry drilling of aperture uses glass capillary as electrode, processing solution forms liquid beam by electrode,
Under Anodic dissolution, the processing to metal works, also referred to as electro-stream machining are realized.In process, a side
Face will control the stability and consistency of machined parameters, on the other hand be supervised online to the blind logical state of institute's machining small
Survey, the moment that small hole machined penetrates, need to terminate in time current hole machined and automatic position-changing to next aperture position.How to protect
Card deep hole machining penetrates the accuracy and reliability of signal acquisition, is a big difficulty of electro-stream machining deep hole.
Surface is tested, in working flat plate workpiece, the effect of curent change is fairly obvious, in the moment that processing penetrates, adds
Work electric current decays to zero at once, can complete fabrication cycles as signal source.But in processing blade of aviation engine etc tool
When having the aperture on the workpiece of internal narrow cavity structure, due to aperture and internal chamber wall angular distribution and gusset, concave-convex flow liner
Presence, when aperture penetrates, the variation of current signal is very faint, and the amplitude of variation is very small, with the wave in process
Dynamic to screen, therefore, the detection method for using current signal as monitoring source loses meaning to a certain extent.In addition, plus
Under acidic environment, the voltage of yin-yang interpolar is higher in work area domain, and generally conventional detection method cannot use.
Therefore, the detection method and its device of a kind of blind logical state of electrical-chemistry method aperture are inventor provided.
Summary of the invention
The embodiment of the invention provides the detection method and its device of a kind of blind logical state of electrical-chemistry method aperture, by
The needle-shaped contact of metal that the anode and cathode of additional power source is accordingly arranged to pair, and the needle-shaped contact of metal is placed in electrical-chemistry method
Solution returns liquid zone when aperture, the electric conductivity for returning liquid electrolyte is utilized, is capable of forming current loop when returning liquid phenomenon, from
And judge the blind logical state in processing hole, solve the blind logical state-detection of electrical-chemistry method aperture accuracy is low and poor reliability
Problem.
In a first aspect, the embodiment of the present invention proposes a kind of detection method of blind logical state of electrical-chemistry method aperture, it should
Method includes：
The pairs of needle-shaped contact of metal, each pair of gold more than the nozzle exit end setting of electro-hydraulic beam tube electrode is a pair of or a pair of
Belonging to needle-shaped contact includes anode contact and cathode contact；
The electrical connection corresponding with the anode and cathode of additional power source respectively by the upper end of each pair of anode contact and cathode contact；
The lower end of each pair of anode contact and cathode contact is placed in processing hole solution to return in liquid zone domain；
The electro-hydraulic beam is when processing aperture on the metal works, between the anode and cathode of the additional power source
Sensed current signal in external circuit when can't detect current signal within the response time, judges adding on the metal works
Work hole is through-hole state, when detecting current signal, judges the processing hole on the metal works for blind hole state.
Preferably, the additional power source is arranged in using parallel way in the pair of above needle-shaped contact of multipair metal
The upper end of outside, each pair of anode contact and the cathode contact pass through conducting wire respectively with the anode of the additional power source and
Cathode electrical connection.
Preferably, the upper end of the anode contact, the cathode contact and the electro-hydraulic beam tube electrode is each attached to sealing
Electrode package device in, the conducting wire of electrical connection is also placed in the electrode package device.
Preferably, the lower end of each pair of anode contact and the cathode contact is rolled over towards the electro-hydraulic beam tube electrode
It is curved.
Preferably, the needle-shaped contact of the metal uses the inert metal of electrochemically resistant corrosion.
Preferably, the additional power source uses DC low voltage power supply.
Preferably, in the external circuit between the anode and cathode of the additional power source when sensed current signal, setting
The response time of detection is 5 seconds, take the signal detected in 5 seconds response times as the blind logical state in judgement processing hole.
Preferably, the insulation siphunculus of the electro-hydraulic beam tube electrode uses glass capillary.
Preferably, further include setting monitoring system, formed for anode contact described in real-time reception and the cathode contact
Circuit in the current signal that detects, the monitoring system judges the blind logical state in processing hole based on received current signal, when
When being judged as blind hole state, controls processing hole position of the electro-hydraulic beam tube electrode on metal works and continues to spray electro-hydraulic beam,
When being judged as through-hole state, the monitoring system controls next processing of the electro-hydraulic beam tube electrode on metal works
Electro-hydraulic beam is sprayed at hole position, the processing detection until completing all processing holes.
Second aspect provides a kind of detection device of blind logical state of electrical-chemistry method aperture.Inspection for first aspect
Survey method, the device include the needle-shaped contact of metal, additional power source and electrode package device, the multipair pairs of needle-shaped touching of the metal
Head is arranged in parallel the nozzle exit end in electro-hydraulic beam tube electrode, and each pair of needle-shaped contact of metal includes anode contact and cathode
The upper end of contact, each pair of anode contact and cathode contact is corresponding with the anode and cathode of the additional power source respectively to be electrically connected
It connects, the lower end of each pair of anode contact and cathode contact is placed in processing hole solution and returns liquid zone domain, in the sun of the additional power source
The detector for sensed current signal, the anode contact, cathode touching are equipped in external circuit between pole and cathode
The upper end of head and the electro-hydraulic beam tube electrode is each attached in the electrode package device of sealing.
To sum up, the present invention is by the way that additional power source and the pairs of needle-shaped contact of metal are arranged in electrical-chemistry method aperture, often
A pair of of needle-shaped contact of metal includes anode contact and cathode contact, by the upper end and additional power source of anode contact and cathode contact
Anode and cathode be separately connected, the lower end of anode contact and cathode contact is placed in processing hole and returns in liquid zone domain, using returning
The good wire characteristic of liquid electrolyte, applies low-voltage between anode contact and cathode contact, is capable of forming current loop, leads to
Cross the circuit signal detected in the circuit, it can be determined that return liquid phenomenon out, to judge the blind logical state of machining small, use
Detection method of the invention is easy to operate, and detection accuracy is high, highly reliable, detects fast response time, high-efficient, effectively solves
Existing detection method is not suitable for the blind logical state-detection problem of complicated machining small above freezing.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of detection device schematic diagram of the blind logical state of electrical-chemistry method aperture of the embodiment of the present invention.
Fig. 2 is that the blind logical state of aperture determines in the detection method of the blind logical state of electrical-chemistry method aperture of the embodiment of the present invention
Method flow diagram.
In figure：
1- metal works；2- processes hole；3- returns liquid zone domain；The electro-hydraulic beam tube electrode of 4-；The needle-shaped contact of 5- metal；6- conducting wire；7- electricity
Pole packaging system；8- additional power source.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment it is detailed
Thin description and attached drawing cannot be used to limit the scope of the invention for illustratively illustrating the principle of the present invention, i.e., of the invention
It is not limited to described embodiment, covers part, component and connection type under the premise of without departing from the spirit of the present invention
Any modification, replacement and improvement.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to accompanying drawings and in conjunction with the embodiments.
Shown in referring to Fig.1, when using electrical-chemistry method aperture, the surface of metal works 1 is provided with electro-hydraulic beam tube electricity
Pole 4（The insulation siphunculus of electro-hydraulic beam tube electrode 4 can use glass capillary）, wherein metal works 1 connect power anode, electro-hydraulic
Beam tube electrode 4 connects power cathode, and electro-hydraulic beam tube electrode 4 is used to form electrolyte solution persistently electro-hydraulic beam, and by electro-hydraulic beam
The position in the processing hole 2 on metal works 1 carries out small hole machined.
The blind logical state-detection of hole machined small for electrochemistry, it is necessary to extract in process that the most prominent and repeatability is
100% feature is as signal source.In the actual processing process, processing electric current can be with state difference, it may occur that changes, and adds
Work electric current penetrated in the processing with complicated inner cavity structural member variation it is faint, can not be accurate with the current fluctuation in process
It screens.Therefore big using simple processing electric current signal detection wrong report amount, it is not suitable for the small hole machined of complex parts substantially.This
Outside, in electro-stream machining, after the glass capillary of electro-hydraulic beam tube electrode 4 enters in metal works 1, processing solution processes hole certainly
It is returned in 2 blind hole gap, will form and return liquid phenomenon and continue, return liquid zone domain 3 to be formed, penetrated moment in processing hole 2, return
Liquid phenomenon is returned in liquid zone domain 3 to disappear.After a large number of experiments and batch machining verifying, it is known that the dimly visible phenomenon for returning liquid is adding
Repetitive rate in work is 100%, thus inventor it is creative return whether liquid phenomenon occurs by accurate measurements blind hole, thus
The blind logical state of aperture has been judged indirectly.
Fig. 1 is a kind of detection device of the blind logical state of electrical-chemistry method aperture of the embodiment of the present invention, as shown in Figure 1,
The needle-shaped contact 5 of metal, additional power source 8 and electrode package device 7 are also provided with when electrical-chemistry method aperture, wherein multipair pairs of
The needle-shaped contact 5 of metal be arranged in parallel the nozzle exit end in electro-hydraulic beam tube electrode 4, each pair of needle-shaped contact of metal includes anode
The upper end of contact and cathode contact, each pair of anode contact and cathode contact passes through the anode of conducting wire 6 and additional power source 8 respectively
（It is illustrated as "+"）And cathode（Be illustrated as-）The lower end of corresponding electrical connection, each pair of anode contact and cathode contact, which is placed in, to be added
Work hole solution returns liquid zone domain 3, may be provided for detecting in the external circuit between the anode and cathode of additional power source 8
The upper end of the detector of current signal, anode contact, cathode contact and electro-hydraulic beam tube electrode 4 is each attached to the electrode package of sealing
In device 7, the conducting wire 6 of the needle-shaped contact of metal is also disposed in the electrode package device 7, carries out close protection.
Present invention utilizes the satisfactory electrical conductivity for returning liquid electrolyte solution and having, when work, applied by additional power source 8 low
Press DC power supply, when occurring returning liquid phenomenon between anode contact and cathode contact, the needle-shaped contact of metal 5 with return liquid electrolyte it
Between be capable of forming current loop, by detecting current signal in the external circuit, can judge process hole 2 position occur returning
Liquid phenomenon, to judge that processing hole 2 is blind hole state.Conversely, the outside of additional power source 8 is positive and negative when returning the disappearance of liquid phenomenon
Between there is open circuit, current signal disappears and kept for certain time, it is possible to determine that being is through-hole state.
The present invention also provides a kind of detection method of the blind logical state of electrical-chemistry method aperture, the detection device of use referring to
Device shown in FIG. 1 and above content, specific detection method include following methods：
（1）The pairs of needle-shaped contact 5 of metal, each pair of more than the nozzle exit end setting of electro-hydraulic beam tube electrode 4 is a pair of or a pair of
The needle-shaped contact 5 of metal includes anode contact and cathode contact；
（2）It is the upper end of each pair of anode contact and cathode contact is corresponding with the anode and cathode of additional power source 8 respectively to be electrically connected
It connects；
（3）The lower end of each pair of anode contact and cathode contact is placed in processing hole solution to return in liquid zone domain 3；
（4）Electro-hydraulic beam is penetrated on metal works 1 by the nozzle of electro-hydraulic beam tube electrode 4, when processing aperture, in additional power source 8
Anode and cathode between external circuit in sensed current signal, when can't detect current signal within the response time, judgement
Processing hole 2 on the metal works 1 is through-hole state, when detecting current signal, judges the processing hole 2 on the metal works 1
For blind hole state.
It should be noted that using needle-shaped 5 parallel connection of contact of multipair pairs of metal in the present embodiment is located at additional power source 8
External circuit, and ensure that the anode contact of every a pair and the lower end of cathode contact are in and return in liquid zone domain 3.The needle-shaped touching of metal
First 5 need to carry out reasonable Arrangement according to the actual range for returning liquid zone domain 3 with the relative position of electro-hydraulic beam tube electrode 4.Can be with
Needle-shaped 5 arranged for interval of contact of metal is also possible in its periphery in electro-hydraulic beam tube electrode 4 centered on electro-hydraulic beam tube electrode 4
Side or two sides are arranged, and are within the scope of the invention.
Mode is arranged in parallel using the multipair needle-shaped contact of pairs of metal, contact can be made to be in the different detections for returning liquid zone domain
Position, it is ensured that at least a pair of contact is at return liquid zone domain in the range of, as long as also, having one pair of them contact can
Effectively detection can be realized in work.It is acquired by Multi-point contact type, further improves the sensitivity and accuracy of detection.
As some alternative embodiments, the lower end of each pair of anode contact and cathode contact is towards electro-hydraulic 4 folding of beam tube electrode
It is curved, it is returned in liquid zone domain 3 with preferably guaranteeing that the lower end of contact is in, keeps detection sensitiveer accurate.
Electrochemical field due to generally using acidic electrolyte solution in electrical-chemistry method, in electrochemical machining process
In, there is the possibility to needle-shaped contact electrochemical corrosion, therefore, the needle-shaped contact 5 of metal need to be using the inertia of electrochemically resistant corrosion
Metal.Such as it can be using gold（Au）Or platinum（Pt）Equal inert metals.
In addition, additional power source 8 uses DC low voltage power supply.The middle letter using measurement processing electric current is different from the prior art
Number, the present invention between anode contact and cathode contact by being arranged the additional power source 8 of DC low voltage power supply, when processing hole 2
When liquid phenomenon is returned in position formation, the equal and conductive liquid electrolyte solution that returns of anode contact, cathode contact is in contact, and passes through outer power-up
Source 8 provides power supply, can form current signal in the external detection circuit of additional power source 8, thus by detecting electric current letter
Number anti-release returns liquid phenomenon, so can judge that aperture is blind hole state.
The determination flow of the blind logical state of small hole machined of the invention is as shown in Fig. 2, in process, detected electric current
When signal, it is possible to determine that being at this time blind hole state, when can't detect current signal, setting a response time（5 seconds or so）,
If repeating current signal in setting time, restart to detect；After setting time, electric current letter still can't detect
Number, it is possible to determine that it is at this time through-hole state.
In some other alternative embodiment, monitoring is further comprised in the detection method of the blind logical state of electrical-chemistry method aperture
System, the current signal for detecting in the circuit of real-time reception anode contact and cathode contact formation, the monitoring system are based on
The blind logical state in received current signal judgement processing hole, when being judged as blind hole state, can control electro-hydraulic beam tube electrode 4 to
The position in the processing hole 2 on metal works 1 continues to spray electro-hydraulic beam, when being judged as through-hole state, monitoring system control
Electro-hydraulic beam is sprayed at next processing hole position of the electro-hydraulic beam tube electrode 4 on metal works 1, until completing adding for all processing holes
Work detection.
The invention is provided with additional power source and the needle-shaped contact of metal, directly acquires external circuit using contact method
In current signal, by returning the blind logical state of the judgement of liquid phenomenon detection aperture indirectly, reliable operation do not reported by mistake, responds
Speed is fast, and signal is transmitted without sluggishness, the non-processing position of workpiece lumen caused by avoiding because of previous monitoring method wrong report
Damage.Secondly, by the way that the current signal in external circuit is sent to monitoring system, can real-time online detection, intellectual analysis
Judgement, obtains visual judging result, also can further indicate that and continue to process or be transferred to next processing hole position
It is processed and is detected.In addition, detection device and method of the invention are not limited by the angle of processing hole site, operation is avoided
Angles and positions in the process are adjusted, and comprehensive test monitoring may be implemented, and that has expanded electrical-chemistry method aperture applies model
It encloses, especially when using electrical-chemistry method aperture on complex parts, compares existing detection technique, there is significant advantage.
It should be clear that all the embodiments in this specification are described in a progressive manner, each embodiment it
Between the same or similar part may refer to each other, the highlights of each of the examples are it is different from other embodiments it
Place.It can be cross-referenced for the part of embodiment of the method and apparatus embodiments.The invention is not limited to it is described above and
Particular step and structure shown in figure.Also, the detailed description to known method technology for brevity, is omitted here.
The above description is only an example of the present application, is not restricted to the application.The scope of the present invention is not being departed from
In the case where to those skilled in the art, various changes and changes are possible in this application.It is all in spirit herein and
Any modification, equivalent replacement, improvement and so within principle, should be included within the scope of claims hereof.
Claims (10)
1. a kind of detection method of the blind logical state of electrical-chemistry method aperture is provided with electro-hydraulic beam tube electricity right above metal works
Pole, wherein metal works connect power anode, and electro-hydraulic beam tube electrode connects power cathode, and electro-hydraulic beam tube electrode is used for electrolyte is molten
Liquid forms persistently electro-hydraulic beam, and the processing hole position by electro-hydraulic beam on metal works, which is characterized in that the detection method
Including：
The pairs of needle-shaped contact of metal, each pair of gold more than the nozzle exit end setting of electro-hydraulic beam tube electrode is a pair of or a pair of
Belonging to needle-shaped contact includes anode contact and cathode contact；
The electrical connection corresponding with the anode and cathode of additional power source respectively by the upper end of each pair of anode contact and cathode contact；
The lower end of each pair of anode contact and cathode contact is placed in processing hole solution to return in liquid zone domain；
The electro-hydraulic beam is when processing aperture on the metal works, between the anode and cathode of the additional power source
Sensed current signal in external circuit when can't detect current signal within the response time, judges adding on the metal works
Work hole is through-hole state, when detecting current signal, judges the processing hole on the metal works for blind hole state.
2. the detection method of the blind logical state of electrical-chemistry method aperture according to claim 1, which is characterized in that the pair of
The outside of the additional power source is arranged in using parallel way in above needle-shaped contact of multipair metal, each pair of anode contact and
The upper end of the cathode contact passes through conducting wire and is electrically connected respectively with the anode and cathode of the additional power source.
3. the detection method of the blind logical state of electrical-chemistry method aperture according to claim 2, which is characterized in that the anode
The upper end of contact, the cathode contact and the electro-hydraulic beam tube electrode is each attached in the electrode package device of sealing, electrical connection
The conducting wire be also placed in the electrode package device.
4. the detection method of the blind logical state of electrical-chemistry method aperture according to claim 1, which is characterized in that each pair of described
The lower end of anode contact and the cathode contact is towards the electro-hydraulic beam tube electrode bending.
5. the detection method of the blind logical state of electrical-chemistry method aperture according to claim 1, which is characterized in that the metal
Needle-shaped contact uses the inert metal of electrochemically resistant corrosion.
6. the detection method of the blind logical state of electrical-chemistry method aperture according to claim 1, which is characterized in that described additional
Power supply uses DC low voltage power supply.
7. the detection method of the blind logical state of electrical-chemistry method aperture according to claim 1, which is characterized in that described outer
In the external circuit between anode and cathode powered up when sensed current signal, the response time that detection is arranged is 5 seconds, with 5
The signal detected in the response time of second is the blind logical state in judgement processing hole.
8. the detection method of the blind logical state of electrical-chemistry method aperture according to claim 1, which is characterized in that described electro-hydraulic
The insulation siphunculus of beam tube electrode uses glass capillary.
9. the detection method of the blind logical state of electrical-chemistry method aperture according to claim 1-8, which is characterized in that
It further include setting monitoring system, the electricity detected in the circuit formed for anode contact described in real-time reception and the cathode contact
Signal is flowed, the monitoring system judges the blind logical state in processing hole based on received current signal, when being judged as blind hole state,
It controls processing hole position of the electro-hydraulic beam tube electrode on metal works to continue to spray electro-hydraulic beam, until being judged as through-hole state
When, the monitoring system controls next processing hole position of the electro-hydraulic beam tube electrode on metal works and sprays electro-hydraulic beam,
Processing detection until completing all processing holes.
10. a kind of detection device of the blind logical state of electrical-chemistry method aperture is used for detection method as described in claim 1,
It is characterized in that, including the needle-shaped contact of metal, additional power source and electrode package device, the multipair pairs of needle-shaped contact of the metal is simultaneously
The nozzle exit end of electro-hydraulic beam tube electrode is arranged in connection, and each pair of needle-shaped contact of metal includes anode contact and cathode touching
The electrical connection corresponding with the anode and cathode of the additional power source respectively of the upper end of head, each pair of anode contact and cathode contact,
The lower end of each pair of anode contact and cathode contact is placed in processing hole solution and returns liquid zone domain, the additional power source anode and
In external circuit between cathode be equipped with for sensed current signal detector, the anode contact, the cathode contact and
The upper end of the electro-hydraulic beam tube electrode is each attached in the electrode package device of sealing.
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| CN201810636652.2A CN108897047A (en) | 2018-06-20 | 2018-06-20 | A kind of detection method and its device of the blind logical state of electrical-chemistry method aperture |
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| CN201810636652.2A CN108897047A (en) | 2018-06-20 | 2018-06-20 | A kind of detection method and its device of the blind logical state of electrical-chemistry method aperture |
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| CN102477566A (en) * | 2010-11-23 | 2012-05-30 | 中国海洋石油总公司 | Electrolytic tank and automatic protecting system and method for same |
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|---|---|---|---|---|
| CN102477566A (en) * | 2010-11-23 | 2012-05-30 | 中国海洋石油总公司 | Electrolytic tank and automatic protecting system and method for same |
| CN104801800A (en) * | 2015-04-14 | 2015-07-29 | 南京航空航天大学 | Small-pore electromechanical and combined processed insulation material coating contrast method and application |
| CN206399605U (en) * | 2016-12-29 | 2017-08-11 | 广州兴森快捷电路科技有限公司 | Liquid leakage detection means |
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