CN207205478U - Contactless EDM System - Google Patents
Contactless EDM System Download PDFInfo
- Publication number
- CN207205478U CN207205478U CN201721164010.4U CN201721164010U CN207205478U CN 207205478 U CN207205478 U CN 207205478U CN 201721164010 U CN201721164010 U CN 201721164010U CN 207205478 U CN207205478 U CN 207205478U
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- electric
- contactless
- spark
- edm
- electric energy
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
It the utility model is related to a kind of contactless EDM System, including contactless electrical discharge machining electric energy import system, separate structure inside and outside contactless electrical discharge machining electric energy import system use, the utility model is transduceed electric energy to tool-electrode by the way of being wirelessly transferred, it can make that compact-sized, handle of a knife dynamic balance is good with this mode, be advantageously implemented the high speed of mainshaft.The high speed rotation of main shaft can further speed up the flowing of interpolar working solution simultaneously so that electric discharge bits can discharge rapidly, further improve micro EDM efficiency.The increase of the speed of mainshaft, the generation that electric discharge collection neutralizes abnormal arcing electric discharge can be suppressed, be advantageous to improve pulse utilization rate so that process velocity further improves.
Description
Technical field
The utility model belongs to spark erosion technique field, and in particular to a kind of based on the non-contact of electromagnetic induction principle
Formula electrical discharge machining electric energy import system.
Background technology
The more electric energy transmission means using physical contact formulas such as carbon brush, collecting ring connections of traditional electric spark electric energy transmission,
There is carbon brush in this mode, collecting ring skimming wear is very fast, caloric value is big, wire is exposed, rotating speed too high should not be also easy to produce contact
The problems such as spark.Meanwhile contact and active force on electrode be present using carbon brush, collecting ring, the vibration of electrode is addition of, is reduced
Rotating accuracy, thus most of research at present all electrode do not rotate or the slow-speed of revolution in the case of carry out.
The high speed rotation of main shaft enables to the distribution of point of discharge more scattered, can be effectively prevented from discharge position in sky
Between and temporal concentration, while the high speed rotation of main shaft can further speed up the flowing of interpolar working solution so that electric discharge bits
It can rapidly discharge, further improve micro EDM efficiency.With the increase of rotating speed, the distance between neighbouring discharge point
It can increase, heat caused by electric discharge rapidly can be taken away by interpolar working solution so as to slow down the upper of electrode local surface temperature
Rise, further suppress the generation that electric discharge collection neutralizes abnormal arcing electric discharge, be advantageous to improve pulse utilization rate so that process velocity enters
The raising of one step.
So traditional contact electric energy import system seriously limits the rotating speed and rotating accuracy of main shaft, it is urgent at present
Need a kind of new electric energy lead-in mode, you can realize high efficiency power while the speed of mainshaft and rotating accuracy are not limited.
Utility model content
In view of this, the utility model provides a kind of contactless EDM System based on electromagnetic induction principle,
It can solve the problem that existing contact electric energy import system seriously limits the rotating speed and rotating accuracy of main shaft, govern electrical spark working
The problem of processing efficiency and surface integrity of work improve.
The technical scheme for realizing the utility model purpose is：
A kind of contactless EDM System based on electromagnetic induction principle, including contactless electrical discharge machining electricity
Can import system, workpiece system and liquid system.The contactless electrical discharge machining electric energy import system cause electrode with
Potential difference is produced between workpiece, realizes electrical discharge machining；The workpiece system is made up of workpiece, fixture and work nest；It is described
Liquid system includes working solution circulating system and coolant circulation system, and working solution circulating system has the work(such as cooling, deionization
Can, coolant circulation system is used for the cooling of main shaft.
Moreover, separate structure inside and outside contactless electrical discharge machining electric energy import system use, in main shaft stagnant end
Electric coil on main electric spark is added, electric coil is connected on spark pulse power on main electric spark, in rotation shank end
Portion adds electric coil on secondary level electric spark, and electric coil is connected on current-limiting resistance and electrode on secondary level electric spark.Coil winding is in tank
In shape magnetic core, separate structure inside and outside induction mode use, two coils have gap.
Moreover, electric coil is connected by the phase adjustment phase with spark pulse power on the main electric spark, realize with
Process the phase of pulse power difference half period.
Moreover, the signal measurement of the contactless electric spark electric energy import system uses oscillograph, while processing is tied
Fruit measures, and by both corresponding results, optimizes parameter processing.
Moreover, the workpiece of the workpiece system is completely immersed in work nest by the way that fixture locating clip is next, workpiece and lathe
Main body is affixed, and induced electromotive force one end is connected and is grounded with machine body by rotating shank end portion so that piece pole current potential
It is zero, another end joining tool electrode, spark discharge processing is carried out so as to produce electrical potential difference.
Moreover, the working solution circulating system is worked liquid using kerosene, working solution is imported into work nest, passed through by oil pump
Regulating valve carries out speed governing, while working solution is flowed back into working solution casing by timing, is filtered back by the filter of inside
Circulation is received to reuse.
Moreover, the coolant circulation system does coolant using water, when the shaft rotates, cooling circulation is started working,
When detecting that temperature control box internal reflux water temperature transfinites, temperature control box opens cooling mode, and the coolant in casing is cooled
Processing, main shaft cooling is carried out so as to be recycled to inside main shaft.
Moreover, described contactless EDM System, in addition to Ultrasonic machining system.
The beneficial effects of the utility model are：
1st, the utility model is transduceed electric energy to tool-electrode by the way of being wirelessly transferred, and with this mode structure can be made tight
Gather, handle of a knife dynamic balance it is good, be advantageously implemented the high speed of mainshaft.The high speed rotation of main shaft can further speed up interpolar work simultaneously
Make the flowing of liquid so that electric discharge bits can discharge rapidly, further improve micro EDM efficiency.The increasing of the speed of mainshaft
Add, the generation that electric discharge collection neutralizes abnormal arcing electric discharge can be suppressed, be advantageous to improve pulse utilization rate so that process velocity enters one
The raising of step.
2nd, potential difference is produced between electrode and workpiece by non-contact type electric energy import system, realizes electrical discharge machining.
Due to eliminating the mode on tool-electrode using brush directly to electricity, eliminate due to electrode vibration caused by contact, can be with
The high-speed rotation of main shaft is realized, improves spindle rotation accuracy, is advantageous to further improve the precision of electrical discharge machining.Electrode simultaneously
High speed rotation can promote interpolar chip removal, increase material removing rate and electrode wear rate and surface roughness all dropped
It is low.
3rd, workpiece system is used for the connection of the clamping position and piece pole of workpiece, and liquid system is used to cool down and electric eliminating
From etc. function, two systems and contactless electric spark electric energy import system organically combine, form contactless electrical discharge machining
System so that its processing characteristics is better than traditional EDM System.
4th, the utility model is different from current electrical discharge machining energy supply mode, by with non-contact ultrasonic system
Organic integration, be expected to make a breakthrough in terms of processing efficiency and surface integrity is improved, accomplish efficient to take into account with high-precision
And balance, development of the ultrasonic edm Compound Machining in micropore field is significant.
Brief description of the drawings
Fig. 1 is the structure chart of the contactless electric spark electric energy import system scheme one of the utility model；
Fig. 2 is the structure chart of the contactless electric spark electric energy import system scheme two of the utility model；
Fig. 3 is the structure and scheme of installation of the contactless electric spark electric energy import system of the utility model；
Fig. 4 is the double non-contact ultrasonic electric spark electric energy import system structure charts of the utility model；
Each part mark is as follows in accompanying drawing：1st, dielectric induced line circle；2nd, electric coil (scheme 1) on main electric spark；2-1 master
Electric coil magnetic core on level electric spark；3rd, piece pole；4th, current-limiting resistance；5th, electrode；6th, electric coil (scheme on secondary level electric spark
1)；Electric coil magnetic core on 6-1, secondary level electric spark；7th, electric coil (scheme 2) on main electric spark；8th, phase regulator；9th, it is secondary
Electric coil (scheme 2) on level electric spark；10th, main shaft；11st, main shaft standard interface；12nd, electric coil in higher level's ultrasound；13rd, subordinate
Electric coil in ultrasound；14th, electric coil on secondary level electric spark；15th, electric coil on main electric spark；16th, handle of a knife is rotated；17th, it is ultrasonic
Ultrasonic transformer；18th, tool-electrode；19th, working solution；20th, work nest；21st, fixture；22nd, workpiece；23rd, working solution liquid outlet；24th, work
Make liquid liquid back pipe；25th, working solution casing liquid return hole；26th, working solution filter；27th, working solution casing；28th, oil pump；29th, work
Make liquid liquid outlet；30th, regulating valve；31st, working solution drain pipe；32nd, working solution inlet；33rd, temperature control box；34th, temperature control box goes out liquid
Mouthful；35th, temperature control box liquid return hole；36th, temperature control box drain pipe；37th, temperature control box liquid back pipe；38th, main shaft liquid outlet；39th, main shaft feed liquor
Mouthful.
Embodiment
To make technological means of the present utility model, creation characteristic, workflow, application method, reached purpose and effect easy
Understand in understanding, with reference to Fig. 1~Fig. 4, the utility model is expanded on further.
Scheme one by the way of conversion is set by loose coupling formula using double induction type principles in the embodiment
The transformer coil of meter, its magnetic core are designed to the Ferrite Material of abnormity.As shown in figure 1, dielectric induced line circle 1 is fixed on master
The stagnant end of axle 9, not with main axis.Dielectric induced line circle 1 is connected with producing the pulse power of certain frequency, online
The voltage and current of change is produced in circle, produced by electromagnetic induction principle in dielectric induced line circle 1 certain electromotive force and
Electric current, so as to which energy is transferred into receiving terminal from transmission end.Induction coil divides two parts, and a part is electric wire on main electric spark
Circle A2 is fixed on main shaft stationary part and is connected by series limiting resistor 4 with piece pole 3, and is grounded together with machine body,
Ensure that workpiece terminal potential is zero.A part is fixed on the rotation rotary end of handle of a knife 16 for electric coil A6 on secondary level electric spark, wherein
Positive terminal is connected on electrode 5, and negative pole end is connected into machine body ground connection by rotating handle of a knife 16.Ensure the high electricity of tool-electrode
Position, now produces potential difference, spark discharge is realized after gap is breakdown between electrode and workpiece.Scheme two, as shown in Fig. 2
The transformer coil designed by loose coupling formula, realize the transfer of energy.Electric coil B9 conducts on the secondary level electric spark of scheme two
Rotating part is identical with scheme one, and stationary end is connected for electric coil B7 on main electric spark with the pulse power passes through phase adjustment
Device 8 is realized differs the phase of half period with the processing pulse power, and workpiece 3 is grounded.Pass through non-contact type electric energy introgressive line
System produces potential difference between electrode and piece pole, realizes electrical discharge machining.Fig. 3 is contactless electric spark electric energy introgressive line
The structure and scheme of installation of system.
Fig. 4 is double non-contact ultrasonic electric spark electric energy import system structure charts.Non-contact ultrasonic electric energy import system
Using vertical type structure, electric coil 12 is fixed on the static end of main shaft 10 in higher level's ultrasound, and the upper electric coil 13 of subordinate's ultrasound is solid
It is scheduled at rotation handle of a knife 16, ultrasonic vibration is done by the tool-electrode 18 of ultrasonic amplitude transformer 17.Contactless electric spark electric energy
Import system use inside and outside formula structure, electric coil 15 is fixed on the static end of main shaft 10 on outside main electric spark, internal
Secondary level electric spark on electric coil 14 be fixed on rotation handle of a knife 16 at.Induced electromotive force one end is by rotating the joint of handle of a knife 16 and machine
Bed body is grounded after being connected, and the other end is connected on tool-electrode 18.Using the ferromagnetic material of high magnetic permeability make radome with
Interfering between armoured magnetic field.By inside and outside level coil, produced using the pulse power on main electric spark in electric coil 15
The voltage and current for changing, leakage field is prevented using different in nature magnetic core, by electromagnetic induction principle, the electric coil on secondary level electric spark
14 produce induced electromotive force, realize that energy is transferred to receiving terminal from transmission end, avoid traditional contact point.Connect the electrodes to
It is connected at high potential with workpiece at low potential, ensures the potential difference between tool-electrode 18 and workpiece 22, realize electrical spark working
Work.Efficient electric energy can also be kept to transmit in handle of a knife high-speed rotation.
Workpiece system is used for the functions such as the positioning clamping, cooling, accelerated corrosion exclusion of workpiece 22, work in this embodiment
Make groove 20 and use nonconducting organic plastics structure, be fixed on the working slider of horizontal location, fixture 21 passes through 3 pressing plates
And screw and work nest 20 it is affixed, fixing end on fixture 21 is used for the positioning of workpiece 22, and mobile terminal is used for the clamping of workpiece.
Workpiece 22 is completely immersed in by working solution 19 by working solution inlet 32 into work nest 20, regularly passes through working solution liquid outlet 29
Discharge.
Liquid system is divided into working fluid system and coolant system in this embodiment, and working fluid system goes out liquid process
It is that working solution 19 is drawn through into working solution liquid outlet 29 by the oil pump 28 on working solution casing 27 to enter working solution drain pipe 31
Interior transmission adjusts flow velocity so as to flow into work nest 20, by regulating valve 30；The liquid process of returning of working fluid system is returned by working solution
Working solution 19 in work nest 20 is imported working solution casing liquid return hole 25 and flows into self-filtering device 26 by liquid pipe 24 to be filtered
Processing, the working solution 19 after processing can recycle.The liquid process that goes out of coolant system is to be led to coolant by temperature control box 34
Cross in the importing temperature control box of temperature control box liquid outlet 34 drain pipe 36 and be transferred to inside the entrance main shaft 10 of main shaft inlet 39；Coolant system
The liquid process that goes out of system is that coolant is passed back into temperature control box liquid back pipe 37 and is transferred to temperature control box liquid return hole 35 by main shaft liquid outlet 38
Into in temperature control box 34, so as to realize that coolant circulating cooling works.
Contactless electric spark electric energy import system utilizes mode of the brush directly to electricity due to eliminating on tool-electrode,
The high-speed rotation for due to electrode vibration caused by contact, realizing main shaft is eliminated, improves spindle rotation accuracy, is advantageous to further
Improve the precision of electrical discharge machining.The high speed rotation of tool-electrode can promote the chip removal of interpolar, increase material removing rate simultaneously
And electrode wear rate and surface roughness all decrease.Workpiece is realized by non-contact rotary ultrasound electric energy import system
Exciting a little, so as to improve the circulation of micro EDM working solution, make the abundant deionization in gap；Very big pressure between gap
Power change causes more effectively to discharge, and the metal more melted can be thus removed from arc crater, reduces heat affected layer, and heat is residual
Residue stress reduces, and micro-crack reduces, and then improves the pulse utilization rate and surface quality of electrical discharge machining.Different from current electricity
Spark machining energy supply mode, by the organic integration with non-contact ultrasonic system, it is expected to improving processing efficiency and table
Face integrality aspect makes a breakthrough, accomplish it is efficient take into account and balance with high-precision, to ultrasonic edm Compound Machining in micropore
Development in field is significant.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession
The technical staff of industry is not it should be appreciated that the utility model is limited by the embodiment above, in the embodiment above and specification
Description simply illustrates principle of the present utility model, and on the premise of the spirit and scope of the utility model is not departed from, this practicality is new
Type also has various changes and modifications.
Claims (7)
- A kind of 1. contactless EDM System, it is characterised in that：Including contactless electrical discharge machining electric energy introgressive line Unite, separate structure inside and outside contactless electrical discharge machining electric energy import system use, main electricity is added in main shaft stagnant end Electric coil on spark, electric coil is connected on spark pulse power on main electric spark, and secondary level is added in rotation shank end portion Electric coil on electric spark, on secondary level electric spark on electric coil connection current-limiting resistance and electrode, coil winding is in pot core, sense Answer mode use inside and outside separate structure, two coils have gap.
- 2. contactless EDM System according to claim 1, it is characterised in that：It is electric on the main electric spark Coil is connected by the phase adjustment phase with spark pulse power, realizes the phase that half period is differed with the processing pulse power.
- 3. contactless EDM System according to claim 1, it is characterised in that：The contactless electric spark The signal measurement of electric energy import system uses oscillograph.
- 4. contactless EDM System according to claim 1, it is characterised in that：Also include workpiece system, work Part system includes fixture, and workpiece is positioned by fixture and clamped, is completely immersed in work nest, workpiece is affixed with machine tool main body, inducts Electromotive force one end is connected and is grounded with machine body by rotating shank end portion, and it is zero to make piece pole current potential, another termination work Have electrode, produce electrical potential difference and carry out spark discharge processing.
- 5. contactless EDM System according to claim 1, it is characterised in that：Also include working solution cyclic system System.
- 6. contactless EDM System according to claim 1, it is characterised in that：Also include coolant cyclic system System.
- 7. contactless EDM System according to claim 1, it is characterised in that：Also include Ultrasonic machining system System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721164010.4U CN207205478U (en) | 2017-09-12 | 2017-09-12 | Contactless EDM System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721164010.4U CN207205478U (en) | 2017-09-12 | 2017-09-12 | Contactless EDM System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207205478U true CN207205478U (en) | 2018-04-10 |
Family
ID=61824207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721164010.4U Withdrawn - After Issue CN207205478U (en) | 2017-09-12 | 2017-09-12 | Contactless EDM System |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207205478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363350A (en) * | 2017-09-12 | 2017-11-21 | 天津科技大学 | Contactless EDM System |
-
2017
- 2017-09-12 CN CN201721164010.4U patent/CN207205478U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363350A (en) * | 2017-09-12 | 2017-11-21 | 天津科技大学 | Contactless EDM System |
| CN107363350B (en) * | 2017-09-12 | 2023-07-18 | 天津科技大学 | Non-contact electric spark machining system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180410 Effective date of abandoning: 20230718 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180410 Effective date of abandoning: 20230718 |