CN102950344A - Method for improving discharge of products of wire electrochemical micro-machining by nano magnetic particles - Google Patents
Method for improving discharge of products of wire electrochemical micro-machining by nano magnetic particles Download PDFInfo
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- CN102950344A CN102950344A CN2012104386651A CN201210438665A CN102950344A CN 102950344 A CN102950344 A CN 102950344A CN 2012104386651 A CN2012104386651 A CN 2012104386651A CN 201210438665 A CN201210438665 A CN 201210438665A CN 102950344 A CN102950344 A CN 102950344A
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Abstract
The invention relates to a method for improving discharge of machining products in a wire electrochemical micro-machining technology, and belongs to the field of electrochemical micro-machining. The method is characterized in that a tool electrode wire above a machining area transmits nano magnetic particles in the axial direction, and the magnetic particles downwards move in the axial direction of the electrode wire under the actions of magnet attraction and gravity below the machining area. The nano magnetic particles have the functions that the nano magnetic particles impact, disturb and penetrate through the machining area, and lead the solid machining products out; the nano magnetic particles break large-diameter bubbles, the growth and enlargement of the bubbles are avoided, and the deformation of the electrode wire, due to the extrusion by the large-diameter bubbles attached on the machining gaps, is avoided; and the nano magnetic particles impact and disturb the machining area, so the bubbles difficultly attach on the electrode wire and the workpiece, and then the discharge efficiency of the bubbles is improved.
Description
Technical field
Magnetic nanoparticle among the present invention improves the method that the wire electrochemical micro-machining product is discharged, and belongs to the micro-electrochemical machining manufacture field.
Background technology
Along with accurate apparatus product towards high-performance, high reliability and integrated direction fast development, a large amount of different micro-structurals have appearred in product parts, for Aero-Space, extensively there is minute aperture in the accurate apparatus product, narrow groove, the processing of the micro-structurals such as finedraw, developed at present multiple minute yardstick processing method, mainly contain micro-cutting and micro-NTM technology, wherein micro-NTM technology dominate mainly comprises fine electric spark processing, micro-electrochemical machining processing, Laser Processing, the LIGA technology, electron beam process, ion beam processing and theirs is compound, combination processing.
Micro-electrochemical machining processing is based on electrochemical ion and removes the technology that principle is come the oligodynamical workpiece, can reach in theory the machining accuracy of atom level, have efficient, low-cost, irrelevant with material hardness, do not produce the advantage on the principle such as machining stress, aspect microfabrication, exist huge development potentiality.The cutting of micro-electrochemical machining line is a kind of novel micro-electrochemical machining process technology that electrolysis principle and line cutting form combine, because line electrode does not have loss, can adopt micron order diameter metal silk to do electrode, processes little extremely several microns joint-cutting.
Produce bubble and solid elaboration products in the electrochemical machining process, if these elaboration products can not in time be discharged, be accumulated in the processing district, will cause processing district partial electrolysis liquid composition, concentration to occur to change significantly, thereby reduce processing reaction speed even breaking working.When adopting line electrode to remove the Electrolyzed Processing suitable to fine structure with high depth-width ratio, because the side clearance narrows down to several microns even reach submicron-scale usually, elaboration products very easily are accumulated in the processing district, cause short circuit, make processing can't continue to carry out.
In order effectively to remove electrolysate, guarantee processing continue carry out, conventional electrolysis processing mainly utilizes high pressure, electrolyte flow at a high speed to take away product.But add man-hour at micro-electrochemical machining, because the size of electrode own is small, height rushes hydraulic coupling may cause electrode vibration-generating even deformed damaged; And because machining gap is small, electrolyte is large along the stroke pressure loss, and it is very weak than disturbance and the updating ability of depths electrolyte to machining area inside that the outside rushes liquid.The approach that at present micro-electrochemical machining processing improves electrolysate discharge, renewal machining gap electrolyte inside has tool-electrode High Rotation Speed, tool-electrode intermittently rollback, the axial micro breadth oscillation of line electrode and the vibration of PZT piezoelectric ceramic high-frequency.The line electrode diameter that the cutting of micro-electrochemical machining line is adopted must rely on anchor clamps to fix at micron order, can't realize rotation, and intermittently rollback can reduce working (machining) efficiency greatly.The axial micro breadth oscillation of line electrode and the vibration of PZT piezoelectric ceramic high-frequency can improve the machining gap flow field to a certain extent, improve processing stability and machining accuracy, but still exist solid elaboration products and bubble to be attached to the problem of wire electrode and surface of the work in the process, elaboration products are discharged effect and still need be improved.How to solve better timely, the stable problem of discharging of elaboration products in the process, become the bottleneck that the electrolytic wire cutting technique further develops.
Summary of the invention
The objective of the invention is to discharge difficulty for elaboration products in the existing micro-electrochemical machining wire cutting technology, the method for a kind of high efficiency, good stability is provided.
A kind of method of improving electrolytic wire cutting technique elaboration products discharge situation, it is characterized in that: at the machining area upper and lower magnetic particle transmitter and magnet are installed respectively, the magnetic particle transmitter is used for the emission nanometer magnetic particle, and magnet is used for guiding and accelerates magnetic particle; The magnetic nanoparticle of selecting is insoluble to electrolyte, does not participate in electrochemical reaction in the workpiece process, and density is large; In the course of work, magnetic nanoparticle passes machining area under gravity and the guiding of magnet magnetic force, impact and the disturbance machining area, and reach and improve the purpose that product is discharged situation: magnetic particle moves downward, and promotes the discharge of solid elaboration products; Magnetic particle impacts, the disturbance machining area is conducive to the bubble discharge, hinders the air pocket generation and also breaks up the air pocket that has generated.
The described method of improving the discharge of electrolytic wire cutting technique elaboration products, it is characterized in that: above-mentioned magnetic particle transmitter and wire electrode are installed on the wire electrode piece jointly, so that magnetic particle transmitter and wire electrode synchro-feed; Simultaneously so that magnetic nanoparticle electrode axis along the line to passing machining area.
The magnetic nanoparticle of selecting can not be dissolved in electrolyte, does not participate in electrochemical reaction in the process, does not change bath composition, and the mechanical energy of utilizing magnetic nanoparticle to move downward is impacted machining area, improves the elaboration products expulsion efficiency.
As seen, characteristics of the present invention are: emission nanometer magnetic particle vertically around the machining area upper, tool wire electrode, and under magnet polarity and Action of Gravity Field below the machining area along the wire electrode axial downward movement.The magnetic nanoparticle effect is:
Pass and impact, disturbance machining area, take the solid elaboration products out of;
Break up the major diameter bubble, hinder air bubble growth and become large, prevent that the major diameter bubble is attached to machining gap extruding wire electrode, causes the wire electrode distortion;
Impact, disturbance machining area so that bubble is difficult to be attached on line electrode and the workpiece, improve the bubble expulsion efficiency.Use the present invention and can improve electrolytic wire cutting technique crudy, improve the indexs such as machining accuracy, surface roughness.
Description of drawings
Fig. 1 is the wire electrochemical micro-machining system schematic;
Fig. 2 is that magnetic nanoparticle improves wire electrochemical micro-machining product discharge schematic diagram;
Number in the figure title: 1, vibration-isolating platform, 2, oscillograph, 3, magnet, 4, the pulse power, 5, computer, 6, electrolytic bath, 7, electrolyte, 8, the workpiece fixture block, 9, workpiece, 10, motion control card, 11, connector
, 12, connector
, 13, the Z axis motor, 14, connector
, 15, y-axis motor, 16, the X-axis motor, 17, support, 18, the wire electrode piece, 19, connecting plate, 20, the PZT piezoelectric ceramics, 21, magnetic nanoparticle, 22, line electrode, 23, the magnetic nanoparticle transmitter.
The specific embodiment
Fig. 1 is the wire electrochemical micro-machining system schematic.This system is comprised of vibration-isolating platform 1, oscillograph 2, magnet 3, the pulse power 4, computer 5, electrolytic bath 6, electrolyte 7, workpiece fixture block 8, workpiece 9, motion control card 10, connector 11, connector 12, Z axis motor 13, connector 14, y-axis motor 15, X-axis motor 16, support 17, wire electrode piece 18, connecting plate 19, PZT piezoelectric ceramics 20.Its course of work is summarized as follows: by control software control XYZ three spindle motors 13,15,16 in the computer 5, can realize the functions such as three-shaft linkage feeding, automatic tool preset, track processing, repeatable accuracy can reach 0.1 μ m.
Fig. 2 is that magnetic nanoparticle improves wire electrochemical micro-machining zone product discharge schematic diagram, be characterized in the process, magnetic particle transmitter 23 is the emission nanometer magnetic particle around line electrode, magnetic particle is under gravity and magnetic pull effect, electrode axis along the line is improved the discharge of elaboration products to passing and the shock vibration machining area.
Below in conjunction with Fig. 1 and Fig. 2 enforcement the present invention is described---the operating process of " magnetic nanoparticle improves wire electrochemical micro-machining product discharge method ".
(1) connect equipment, power-on is opened control software;
(2) workpiece fixture block 8 and workpiece 9 are installed,, wire electrode piece 18 and line electrode 22, magnetic particle transmitter 23, and in electrolytic bath 6, inject the electrolyte 7 that is fit to height;
(3) workpiece 9 connects the pulse power 4 positive poles, and line electrode 22 connects the pulse power 4 negative poles;
(4) by control software control Z axis motor 13 so that line electrode 22 axial micro breadth oscillations, PZT20 at the Z-direction dither, are opened magnetic nanoparticle transmitter 23;
(5) in the process, the magnetic nanoparticle 21 that line electrode 22 axial micro breadth oscillations, PZT piezoelectric ceramics 20 axially pass machining area at Z-direction dither and electrode 22 along the line can both improve the discharge of machining area elaboration products, improves crudy;
(6) by the movement locus of control software set line electrode 22 with respect to workpiece 9, realize the processing of track or structure.
Claims (2)
1. one kind is improved the method that electrolytic wire cutting technique elaboration products are discharged situation, it is characterized in that:
(1) at the machining area upper and lower magnetic particle transmitter (23) and magnet (3) are installed respectively, the magnetic particle transmitter is used for the emission nanometer magnetic particle, and magnet is used for guiding and accelerates magnetic particle;
(2) magnetic nanoparticle of selecting is insoluble to electrolyte, does not participate in electrochemical reaction in the workpiece process, and density is large;
(3) in the course of work, magnetic nanoparticle passes machining area under gravity and the guiding of magnet magnetic force, impact and the disturbance machining area, and reach and improve the purpose that product is discharged situation: magnetic particle moves downward, and promotes the discharge of solid elaboration products; Magnetic particle impacts, the disturbance machining area is conducive to the bubble discharge, hinders the air pocket generation and also breaks up the air pocket that has generated.
2. according to claim 1ly improve the method that electrolytic wire cutting technique elaboration products are discharged, it is characterized in that:
Above-mentioned magnetic particle transmitter (23) and wire electrode (22) are installed on the wire electrode piece jointly, so that magnetic particle transmitter (23) and wire electrode (22) synchro-feed; Simultaneously so that magnetic nanoparticle electrode axis along the line to passing machining area.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692035A (en) * | 2013-12-19 | 2014-04-02 | 华南理工大学 | Device for conducting electrical discharge machining on thread-like metal material |
| CN104625266A (en) * | 2015-01-07 | 2015-05-20 | 安徽工业大学 | Electrolysis-mechanical micro cutting machining system of fretsaw winding electrode |
| CN104625267A (en) * | 2015-01-07 | 2015-05-20 | 安徽工业大学 | Electrolysis-mechanical micro cutting machining method of fretsaw winding electrode |
| RU2606828C2 (en) * | 2014-11-11 | 2017-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный технический университет" | Method of mating surfaces abrasion-free adjustment |
| RU2621325C2 (en) * | 2014-11-11 | 2017-06-02 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный технический университет" | Preparation method for processing medium pumped through treatment zone during dimensional electrochemical machining and device for its implementation |
| RU2716387C1 (en) * | 2019-02-20 | 2020-03-11 | Акционерное общество "Конструкторское бюро химавтоматики" (АО КБХА) | Method of electrochemical removal of allowance from part surface and device for its implementation |
| CN110961734A (en) * | 2019-12-17 | 2020-04-07 | 河海大学常州校区 | Ultrasonic vibration assisted micro-electrolysis linear cutting machining method and device |
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|---|---|---|---|---|
| CN103692035A (en) * | 2013-12-19 | 2014-04-02 | 华南理工大学 | Device for conducting electrical discharge machining on thread-like metal material |
| RU2606828C2 (en) * | 2014-11-11 | 2017-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный технический университет" | Method of mating surfaces abrasion-free adjustment |
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| CN104625266A (en) * | 2015-01-07 | 2015-05-20 | 安徽工业大学 | Electrolysis-mechanical micro cutting machining system of fretsaw winding electrode |
| CN104625267A (en) * | 2015-01-07 | 2015-05-20 | 安徽工业大学 | Electrolysis-mechanical micro cutting machining method of fretsaw winding electrode |
| RU2716387C1 (en) * | 2019-02-20 | 2020-03-11 | Акционерное общество "Конструкторское бюро химавтоматики" (АО КБХА) | Method of electrochemical removal of allowance from part surface and device for its implementation |
| CN110961734A (en) * | 2019-12-17 | 2020-04-07 | 河海大学常州校区 | Ultrasonic vibration assisted micro-electrolysis linear cutting machining method and device |
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