CN205437394U - Line type electrode curved surface electrolytic assisted electro -discharge machining system - Google Patents
Line type electrode curved surface electrolytic assisted electro -discharge machining system Download PDFInfo
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- CN205437394U CN205437394U CN201520682917.4U CN201520682917U CN205437394U CN 205437394 U CN205437394 U CN 205437394U CN 201520682917 U CN201520682917 U CN 201520682917U CN 205437394 U CN205437394 U CN 205437394U
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Abstract
The utility model discloses a line type electrode curved surface electrolytic assisted electro -discharge machining system, including line type electrode and work piece, cover the mask on the finished surface of work piece, set up a plurality of through -holes on the mask, the line type electrode with mask contact on the finished surface of work piece. The beneficial effects of the utility model are that: the relative displacement motion is done with the work piece to the line type electrode, is favorable to the working solution to update, the mask motion at the plane facing to the line type electrode, not only can update the working solution to it is very stable to make the processing clearance, the little electrolysis electric spark of mask can make spark -erosion machining only take place to improve electro -discharge machining(EDM)'s locality in that the mask is not regional, and under little electrolytic effect, the finished surface has than the better surface quality of ordinary spark processing, adopt the mode of curved surface mask, can be convenient acquire large -scale surface texture to can carry out the inside and outside surface texture's of cylinder curved surface processing.
Description
[technical field]
This utility model relates to EDM Technology field, specifically refers to a kind of wire-type of electrode curved surface electrochemical discharge system of processing.
[background technology]
Along with microelectric technique, nanotechnology, micro-nano technology technology, laser technology, macro learn a skill, the progress of the technology such as new material new process, micro mechanical system (MEMS) technology is constantly promoted and is developed.Micro-fluidic chip has very high potential in fields such as biological, chemistry and medical science.Polymeric material is owing to having the advantages such as low cost, functional, the range of choice is wide, by mould be easily achieved micro-fluidic chip quick, produce low-costly and in high volume, be increasingly becoming make micro-fluidic chip main material (see Liu Ying. microstructural articles injection molding process technical research of based on micro-fluidic chip. Dalian: Dalian University of Technology, 2012).
Polymeric micro-fluidic chip typically use the processing method molding such as hot pressing formation process, method of molding, injection molding method, laser ablation method (see Chang Hongling. injection mo(u)lding PMMA micro-fluidic chip thermocompression bonding research [D]. Dalian: Dalian University of Technology, 2012).First three methods utilizes Making mold micro-fluidic chip, and low cost, the cycle is short, automaticity is high, is the most the most frequently used micro-fluidic chip forming method.So, method and the technique of studying the metal surface large area microstructural mold of a kind of efficient preparation high-quality are crucial.
The characteristic size of micro-fluidic chip microchannel is generally: high 50～100 μm, wide 30～200 μm, surface quality and dimension precision requirement are strict, metal die shows as the structure of projection, it is difficult to meet processing request (see Song Mancang with traditional mechanical processing, Yu Chao, Zhang Jianlei etc. polymeric micro-fluidic chip Making mold Advance In Key Techniques [J]. mould industry, 2012, (02): 1-6).The manufacturing technology of polymeric micro-fluidic chip mould mainly has: the technology such as LIGA technology, UV-LIGA technology, micro-milling technology, Laser Micro-Machining, chemical etching, spark erosion technique.Wherein most like with this utility model method is: chemical etch technique and spark erosion technique.
Photoetching technique (Lithography) uses X-ray or ultraviolet to be exposure source, through operations such as exposure imagings, it is transferred to be attached on the photoresist of base material by the pattern designed on mask plate, form concavo-convex pattern (see Chen great Peng, Ye Tianchun. modern lithographic technologies [J]. nuclear technology, 2004,27 (2): 81-86).First in substrate, coat one layer of photoresist against corrosion, at transmission area, resist layer is exposed by mask plate with exposure technique after solidification, the photoresist of exposure occurs rotten, after being cleaned by developer solution again, remove rotten photoresist (positive photoresist) or unmetamorphosed photoresist (negative photoresist), expose base material, form the pattern identical with on mask plate.
Electrolysis electric spark Combined Machining Technology (ECDM), select the working solution of suitable conductivity, this solution has certain dielectric properties, spark discharge can be produced, the most also have certain electric conductivity produce electrochemical action (see Yin Qingfeng, Wang Baorui, Zhang Yongbin etc. weak electrolyte solution EDM/ECM Compound Machining mechanism research [J]. machine design and manufacture, 2014, (5): 85-88).Tool-electrode connects negative pole, and instrument connects positive pole, first produces anode electrolysis effect after switching on power, and produces metal ion and moves to tool-electrode under electric field action.Under suitable voltage, when the gap of tool-electrode Yu workpiece is fed into the marginal value of spark discharge, producing spark discharge, electric discharge produces instantaneous high-temperature and is removed by workpiece material, it is achieved the processing of workpiece material.Tool-electrode also with a certain degree of instantaneous high-temperature ablation, and can adsorb the metal ion near tool-electrode and obtain electronic reduction reaction, and being deposited on tool-electrode surface can compensating electrode loss.
nullChemical etch technique (see: ZhangC,RentschR,BrinksmeieE.Advancesinmicroultrasonicassistedlappingofmicrostructuresinhard–brittlematerials:abriefreviewandoutlook[J].nternationalJournalofMachineTools&Manufacture,2005,(45) it is: 881-890) to utilize machined material that chemical reaction occurs in particular etch solution or gas and dissolve or the principle corroded removes the material of processing district，Owing to surface of the work utilizes photoetching technique to make the lumarith of certain pattern，Etching forms concaveconvex structure or the hollow out effect with similar pattern.Chemical etching includes dry etching and wet etching two kinds, the general more employing wet etch technique of micron order dimensional structure.The shortcoming of wet chemical etch is: lathe and related components resistance to corrosion are required higher by corrosive liquid, the course of processing is usually unfavorable for environmental protection because producing chemistry fog and toxic gas, and the side corrosion phenomenon in chemical etching principle can cause processing dimension to be difficult to accurately controlling, microchannel sidewall verticality is bad and cross sectional shape is difficult to control to.
The processing method that galvanic action when spark erosion technique is to utilize high-voltage pulse between electrode and workpiece to produce spark discharge removes material, processing Micro-fluidic chip die can use Micro Ed-milling method and electric spark form copying.Electric spark form copying needs to make in advance micro-fluidic chip master mold as tool-electrode, is processed the Micro-fluidic chip die of desired depth by length feed.The method of spark erosion technique finished surface micro structure has Micro Ed-milling method and electric spark form copying, close with this utility model is electric spark form copying, its shortcoming is: owing to tool electrode loss is serious, forming accuracy and service life can be affected, and process and there is heat affected area, making surface of the work produce metamorphic layer, fine structure is easily generated thermal deformation.
All there is the problem that the processing of through hole position is not enough, working depth is uneven in above-mentioned prior art, owing to opening the cylindrical electrode in hole as tool cathode in the middle of using, in processing, electrode does not make translation, the surface of the work a certain region electric field that lead to the hole site is corresponding is faint, the depth of microstructure that this region produces because processing capacity is few is the most shallow, shows working depth uneven.And the method can only process the micro structure in little areal extent, the processing for larger area micro structure is inapplicable.Because if being only to increase electrode floor space, the problem that processing electric current is excessive or Flow Field Distribution is uneven can be brought again.
Current electrolysis electric spark Combined Machining Technology has no report in terms of mask work pieces process micro structure.Using microelectrode to carry out being electrolysed spark machined, the working (machining) efficiency for large area microchannel bulge-structure is the lowest.Profiling spark erosion technique can also large area processing, but need to make in advance the mould of complementation and export license is serious, and the advantage that the method has only to make workpiece mask, has low cost, the cycle is short and tool loss rate is low.Wet chemical etch, also using the means of photo etched mask, but the microstructure side wall verticality of etching is very poor, it is impossible to meet the verticality requirement of microchannel.
It addition, the processing of existing electrochemical discharge there is also and is unfavorable for that working solution updates, processing gap instability, the defects such as machined surface quality is poor.
[utility model content]
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, it is provided that one can upgrade in time working solution, and processing gap is stable, the wire-type of electrode curved surface electrochemical discharge system of processing that crudy is good.
The purpose of this utility model is achieved through the following technical solutions: wire-type of electrode curved surface electrochemical discharge system of processing, including wire-type of electrode and workpiece, described wire-type of electrode and workpiece are placed in working solution, and the finished surface of described workpiece is coated with one layer of mask, and described mask arranges some through holes；Wire-type of electrode contacts with described mask, and described wire-type of electrode can against described mask and move.Wire-type of electrode againsts mask motion in the plane, is possible not only to update working solution, and processing gap can be made highly stable；Mask light electrolysis electric spark, can make spark machined occur over just non-masked areas, improve the locality of electro-discharge machining.And under the effect of light electrolysis, finished surface has processes more preferable surface quality than common spark.
Described workpiece can be cylindric cylinder, mask film covering on the described cylindric lateral surface of cylinder and/or the finished surface of medial surface.
Described wire-type of electrode againsts mask and moves, longitudinal movement speed 20-100mm/s of described wire-type of electrode (axially), horizontal (radially) moving movement speed 1-8mm/s of described wire-type of electrode, workpiece transfixion.
Preferably, longitudinal movement speed 40-60mm/s of described wire-type of electrode (axially), horizontal (radially) moving movement speed 3-5mm/s of described wire-type of electrode.
Generally speaking, prior art is compared, and the beneficial effects of the utility model are: wire-type of electrode and workpiece do relative disPlacement motion, and beneficially working solution updates；Wire-type of electrode againsts mask motion in the plane, is possible not only to update working solution, and processing gap can be made highly stable；Mask light electrolysis electric spark, can make spark machined occur over just non-masked areas, improve the locality of electro-discharge machining；And under the effect of light electrolysis, finished surface has processes more preferable surface quality than common spark；Use the mode of curved surface mask, large-scale surface texture can be obtained easily, and the processing of Cylinder Surface inner and outer surfaces texture can be carried out.
[accompanying drawing explanation]
Fig. 1 is the principle assumption diagram of this utility model wire-type of electrode curved surface electrochemical discharge system of processing；
Fig. 2 is the machining sketch chart of this utility model wire-type of electrode curved surface electrochemical discharge system of processing；
Fig. 3 is the schematic diagram 1 of this utility model wire-type of electrode curved surface electrochemical discharge system of processing；
Fig. 4 is the schematic diagram 2 of this utility model wire-type of electrode curved surface electrochemical discharge system of processing.
[detailed description of the invention]
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail.
Wire-type of electrode curved surface electrochemical discharge system of processing, as depicted in figs. 1 and 2, including wire-type of electrode 5 and workpiece 4, described wire-type of electrode 5 and workpiece 4 are placed in working solution, and described wire-type of electrode 5 is connected formation electric machining loop with the electrode of workpiece 4 with power supply 1.It is coated with one layer of mask 3 on the finished surface of described workpiece 4, described mask 3 arranges some through holes 2；Described wire-type of electrode 5 contacts with the mask 3 on the finished surface of described workpiece 4, and described wire-type of electrode can against described mask and move.Described wire-type of electrode 5 againsts mask 5 in the plane and moves, and is possible not only to update working solution, and processing gap can be made highly stable；Mask light electrolysis electric spark, can make spark machined occur over just non-masked areas, improve the locality of electro-discharge machining.And under the effect of light electrolysis, finished surface has processes more preferable surface quality than common spark.Described workpiece 4 can be cambered surface, can be effectively improved processing effect.Described workpiece 4 can be cylindric cylinder, as shown in Figure 3 and Figure 4, and mask film covering 3 on the described cylindric lateral surface of cylinder and/or the finished surface of medial surface.Described workpiece 4 can also be to have semicircular globoidal structure.
A kind of wire-type of electrode curved surface electrochemical discharge processing method, including wire-type of electrode 5 and workpiece 4, mask film covering 3 on the finished surface of described workpiece 4, described mask 3 arranges some through holes 2；Wire-type of electrode 5 contacts with the mask 3 on the finished surface of described workpiece 4；Described wire-type of electrode 5 againsts mask and moves, and can be relative slip.Longitudinal movement speed 21-00mm/s of described wire-type of electrode (axially), horizontal (radially) moving movement speed 2-7mm/s of described wire-type of electrode, workpiece transfixion.Preferably, longitudinal movement speed 41-59mm/s of described wire-type of electrode (axially), horizontal (radially) moving movement speed 4-5mm/s of described wire-type of electrode.It is furthermore preferred that longitudinal movement speed 50mm/s of described wire-type of electrode (axially), horizontal (radially) moving movement speed 4mm/s of described wire-type of electrode.
Preferred embodiment of the present utility model described in detail above, it will be appreciated that the ordinary skill of this area just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technical staff in the art conceive by logical analysis, reasoning or according to the limited available technical scheme of experiment on the basis of prior art according to this utility model, all should be among by protection domain determined by the claims.
Claims (2)
1. wire-type of electrode curved surface electrochemical discharge system of processing, it is characterised in that include that wire-type of electrode and workpiece, described wire-type of electrode and workpiece are placed in working solution, the finished surface of described workpiece is coated with one layer of mask, described mask arranges some through holes；Described wire-type of electrode contacts with described mask, and described wire-type of electrode can against described mask and move.
2., according to the wire-type of electrode curved surface electrochemical discharge system of processing described in claim 1, it is characterised in that described workpiece is cylindric cylinder, the described cylindric lateral surface of cylinder and/or the finished surface of medial surface are coated with described mask.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520682917.4U CN205437394U (en) | 2015-09-02 | 2015-09-02 | Line type electrode curved surface electrolytic assisted electro -discharge machining system |
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| CN201520682917.4U CN205437394U (en) | 2015-09-02 | 2015-09-02 | Line type electrode curved surface electrolytic assisted electro -discharge machining system |
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| CN205437394U true CN205437394U (en) | 2016-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127524A (en) * | 2015-09-02 | 2015-12-09 | 广东工业大学 | Linear electrode curved surface electrolysis electrical discharge machining system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127524A (en) * | 2015-09-02 | 2015-12-09 | 广东工业大学 | Linear electrode curved surface electrolysis electrical discharge machining system and method |
| CN105127524B (en) * | 2015-09-02 | 2020-05-01 | 广东工业大学 | Linear electrode curved surface electrolytic discharge machining system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20200902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |