CN103433579B - A kind of electrochemical machining method of sleeve part inner surface microprotrusion - Google Patents
A kind of electrochemical machining method of sleeve part inner surface microprotrusion Download PDFInfo
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- CN103433579B CN103433579B CN201310414136.2A CN201310414136A CN103433579B CN 103433579 B CN103433579 B CN 103433579B CN 201310414136 A CN201310414136 A CN 201310414136A CN 103433579 B CN103433579 B CN 103433579B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000003754 machining Methods 0.000 title claims abstract description 18
- 239000003792 electrolyte Substances 0.000 claims abstract description 5
- 239000011148 porous material Substances 0.000 claims abstract description 5
- 238000005868 electrolysis reaction Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 11
- 238000005461 lubrication Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 241001233242 Lontra Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000009760 electrical discharge machining Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000005469 synchrotron radiation Effects 0.000 description 1
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention provides a kind of sleeve part inner surface microprotrusion electrochemical machining method, belong to Electrolyzed Processing field.The method utilizes the elastic insulated thin plate of small group's pore structure, its Part-oriented one side carries out conductive treatment, and its conductive layer and elastic insulated thin plate are formed tool cathode, sleeve part is as workpiece anode, electrolyte is full of between cathode and anode, positive and negative pole is connected with the positive and negative electrode of power supply respectively, carries out Electrolyzed Processing, produces microprotrusion structure at sleeve part inner surface.Adopt electrochemical machining method of the present invention, microprotrusion structure can be formed at the inner surface of sleeve part, and have and manufacture the features such as the fast and cost of microprotrusion speed is low.
Description
Technical field
The present invention relates to Electrolyzed Processing field, be specifically related to a kind of electrochemical machining method of sleeve part inner surface microprotrusion.
Background technology
In the dynamics lubricating area of tribology, Elastic fluid lubrication theory is the new lubrication theory that the micro-bullet stream produced microprotrusion on the basis of grand bullet stream carries out that series of studies obtains.Micro-bullet mobilization force lubrication theory, has broken the more smooth better traditional view of machinery part surface of Structure deformation in mechanical field.The rough surface with microprotrusion form touch is conducive to forming elastohydrodynamic oil film, tribological property can be improved, not only do not reduce machinery part surface antiwear property, greatly improve bearing capacity and service life on the contrary, the requirement of modern mechanical driven high-speed, heavy duty can be met, therefore become the important breakthrough of lubrication theory.But domestic and international is at present also a difficult problem for processing microprotrusion.
At present, the main method of microprotrusion processing has: (1) laser processing technology, be adopt high-energy, the negative out of focus of pulse laser beam after focusing of high multiplicity frequency be irradiated to surface of the work and implement preheating and strengthening, focus point after focusing incides surface of the work and forms small molten bath, by side-blown device, small molten bath is imposed on to the assist gas of setting pressure and flow simultaneously, make the fused mass in molten bath be stacked into melt tank edge by appointment requirement and form arc cam.This processing method has ablation effect to machining area, form microcosmic or macroscopic cracking, and processing cost is high; (2) spark erosion technique, the female electrode of array micro hole is processed with single electrode electric discharge or micro WEDM technology, again with female electrode instead to copy, translation discharge technology processing column array microprotrusion structure, adopt spark erosion technique to make the pattern with certain rule at piece surface and also can realize effectively lubricating, but spark discharge heat etching processing mechanism and export license make the raising of its miniaturization level removing material, machining accuracy and surface quality be restricted; (3) LIKA(lithographie, galvanoformungundabformung) technology, adopts LIGA technology can obtain the microprotrusion structure of sidewall, but needs expensive synchrotron radiation light source due to LIGA technology, cost is high, the cycle is long, thus limits its range of application.(4) electrochemical Machining Technology, the method is based on metal material generation electrochemical dissolution principle under "on" position, utilizes custom-designed tool-electrode, controlled working voltage, realizes the processing of microprotrusion process time, there will not be static stress and distortion, machined surface quality is high.But for the processing of micro-structural, the making of the tool-electrode that electrochemical Machining Technology is used or mask structure is but its core difficult problem.The Chinese patent CN101327537A filed an application on December 24th, 2008 discloses a kind of method for electrochemical machining and specific purpose tool of high depth-to-width ratio micro metallic bundle pillar structure, in its patent of invention, propose directly to adopt metal otter board to carry out counter copy (RECM) of micro-electrochemical machining as tool cathode and add man-hour, obtain micro-boss structure.On this basis, this patent proposes insulating layer deposition after the multiple micro-holes sidewall and the back side of metal otter board, effectively weakens the electric-field intensity on bundle pillar surface, thus obtains high depth-to-width ratio micro bundle pillar structure.The method is when using metal otter board to make micro-boss, and surface to be machined and tool cathode do not adopt shielding measure, and electrochemical machining process easily produces dispersion corrosion phenomenon, causes micro-boss shape irregularity, not obvious, especially for the processing of minute protrusions structure.After carrying out sidewall and the process of instrument insulating backside, boss shape is clear, complete, but its tool-electrode complex manufacturing process, especially for carrying out insulation processing at hundreds and thousands of micro hole sidewalls or adopting its tool-electrode to carry out the processing of fine bundle pillar structure at hole inwall, difficulty is very large.
Summary of the invention
The object of the invention is, for the deficiency of current sleeve part inner surface microprotrusion structure processing method, to propose a kind of low cost and processing method easy and simple to handle.
In order to solve above technical problem, the present invention is achieved by the following technical programs.
The electrochemical machining method of a kind of sleeve part inner surface of the present invention microprotrusion structure, comprises the following steps:
A () makes with small group's pore structure, and the tool cathode be made up of elastic insulated thin plate and conductive layer;
B tool cathode is fixed on clamping device by (), and clamping is on precision machine tool, adds and this clamping device can be driven man-hour to make tool cathode realize feeding to sleeve part;
C anode, negative electrode, as electrolytic anode, are connected with the positive and negative electrode of electrolysis power, pass into electrolyte by () sleeve part respectively, implement Electrolyzed Processing;
D () electrolysis terminates after, negative electrode clamping device is driven to return initial position;
E () control tool cathode rotary certain angle, then feeding again, implement Electrolyzed Processing;
F () repeats above-mentioned (d) step and (e) step, until sleeve part inner surface microprotrusion, whole electrochemical machining process terminates.
Compared with known technology, the present invention has following technique effect.
1. insulating thin just carries out conductive treatment to sleeve part inwall one side, form conductive layer, other face insulation of thin plate, this structure is by the electric field between shielding small group hole sidewall, newly-generated convex surfaces, thus the new microprotrusion produced of protection is not by ablation; This structure is simple, easy to make, avoids a difficult problem for the inner wall insulation of small group's pore structure; In addition, for the processing carrying out microprotrusion on hole inwall or curved-surface structure, the resilient property of its tool-electrode has certain advantage.
2. tool-electrode does relative motion relative to workpiece anode, thus processes microprotrusion structure, and the tool-electrode made can be reused, thus greatly reduces cost.
3. require low to processing environment, without the need to ultra-clean space, without the need to heating.
In sum, the microprotrusion structure utilizing the present invention to process, has that cost is low, efficiency is high, and the feature that tool-electrode can repeatedly use.
Accompanying drawing explanation
Fig. 1 is the tool cathode schematic diagram of sleeve part inwall micro-structural machining of the present invention.
Fig. 2 is the method schematic diagram of Electrolyzed Processing sleeve part inner surface microprotrusion structure of the present invention.
Fig. 3 is the process schematic of Electrolyzed Processing sleeve part inner surface microprotrusion structure of the present invention.
Fig. 4 is the sleeve part inner surface microprotrusion structural representation after Electrolyzed Processing of the present invention.
Number in the figure title: 1, special tool cathode; 2, elastic insulated thin plate; 3, conductive layer; 4, workpiece anode; 5, electrolyte; 6, electrolysis power; 7, special tool cathode clamping device; A, negative electrode direction of feed.
Detailed description of the invention
In order to understand content of the present invention further, below in conjunction with drawings and Examples in detail the present invention is described in detail, but the present invention is not limited to following embodiment.
Microprotrusion structure can play the effect of anti-attrition effectively, and this is verified in bionic mechanical test.In electrochemical machining process, intend employing 3 electroforms, namely each Electrolyzed Processing inner surface 1/3.(certainly, also can adopt the electroform of other number of times).By reference to the accompanying drawings, concrete processing and implementation process is successively through following steps:
(1) with reference to shown in figure 1, adopt drilling process technology, generally adopt inert metal, as platinum etc. at elastic insulated thin plate 2 and conductive layer 3() on get out small group's pore structure, obtain tool cathode 1;
(2) with reference to shown in figure 2, tool cathode 1 is fitted tightly with on the clamping device 7 of sleeve part same curvature radius, and with sleeve part 4(workpiece anode) inwall is separated by a distance;
(3) respectively sleeve part 4, tool cathode 1 are connected with the positive and negative electrode of electrolysis power 6;
(4) electrolyte 5 flows between tool cathode 1 and sleeve part 4 inwall;
(5) with reference to shown in figure 3, switch on power 6, carry out Electrolyzed Processing, obtain microprotrusion structure at sleeve lining;
(6) with reference to shown in figure 4, after process finishing, powered-down, shifts out workpiece, obtains one section of microprotrusion structure at sleeve lining place.Process whole inner surface if want and there is microprotrusion structure, tool cathode can be rotated to an angle, then repeat the 2nd step ~ the 5th step, until Electrolyzed Processing all completes.
Claims (1)
1. an electrochemical machining method for sleeve part inner surface microprotrusion, is characterized in that comprising the following steps:
A () makes with small group's pore structure, and the tool cathode (1) be made up of elastic insulated thin plate (2) and conductive layer (3);
B tool cathode (1) is fixed on clamping device (7) by (), and clamping is on precision machine tool, adds and drive man-hour this clamping device (7) to make tool cathode (1) realize feeding to sleeve part (4);
C anode, negative electrode, as electrolytic anode, are connected with the positive and negative electrode of electrolysis power (6) by () sleeve part (4) respectively, pass into electrolyte (5), implement Electrolyzed Processing;
D () electrolysis terminates after, clamping device (7) is driven to return initial position;
E () control tool negative electrode (1) rotates to an angle, then feeding again, implements Electrolyzed Processing;
F () repeats above-mentioned (d) step and (e) step, until sleeve part inner surface microprotrusion, whole electrochemical machining process terminates.
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| CN103962662A (en) * | 2014-05-15 | 2014-08-06 | 章华 | Method for forming valve mark |
| CN104384643B (en) * | 2014-10-16 | 2016-12-07 | 南京航空航天大学 | Aero-engine Thin-Wall Outer Casing electrochemical machining method |
| CN111299731B (en) * | 2020-03-25 | 2021-09-24 | 苏州大学 | Processing method for forming microstructure on surface of workpiece and control system |
| CN112404618B (en) * | 2020-10-27 | 2022-03-11 | 河南理工大学 | Device for continuously electrolytically machining metal microstructure through mask |
| CN112894038B (en) * | 2021-02-26 | 2022-05-20 | 河海大学常州校区 | Curved surface electrolytic machining device |
| CN113369607B (en) * | 2021-06-09 | 2022-06-28 | 河南理工大学 | Electrochemical machining device for synchronously realizing microstructures on inner surface of cylindrical workpiece and outer surface of cylindrical workpiece |
| CN113977019B (en) * | 2021-12-03 | 2022-08-26 | 南京航空航天大学 | Plunge type sweeping electrochemical machining tool with cross hedging flow field |
| CN114101818A (en) * | 2021-12-06 | 2022-03-01 | 郑州大学 | Method for processing surface microtexture by maskless electrolysis |
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| CN101327537A (en) * | 2008-07-09 | 2008-12-24 | 南京航空航天大学 | Electrochemical processing method of high depth-to-width ratio micro metallic bundle pillar structure and special-purpose tool |
| CN101327535A (en) * | 2008-07-09 | 2008-12-24 | 南京航空航天大学 | Electrolytic machining method for micro-pit group using bipolar electrode and bipolar electrode thereof |
| DE102008018742A1 (en) * | 2008-04-14 | 2009-10-22 | Albert-Ludwigs-Universität Freiburg | Tool electrode for electrochemical machining device, has semiconductor material including semiconductor substrate with relief-type surface structure, and insulating layer formed along surface structure |
| CN101862870A (en) * | 2010-06-21 | 2010-10-20 | 南京航空航天大学 | Array micro-pit electrolytic machining method and system |
| CN102266990A (en) * | 2011-07-05 | 2011-12-07 | 河南理工大学 | Electrochemical machining method of horn-shaped micro hole array |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08108318A (en) * | 1994-10-12 | 1996-04-30 | Riken Corp | Electric discharge machining method for electrically insulating ceramics |
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Patent Citations (5)
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| DE102008018742A1 (en) * | 2008-04-14 | 2009-10-22 | Albert-Ludwigs-Universität Freiburg | Tool electrode for electrochemical machining device, has semiconductor material including semiconductor substrate with relief-type surface structure, and insulating layer formed along surface structure |
| CN101327537A (en) * | 2008-07-09 | 2008-12-24 | 南京航空航天大学 | Electrochemical processing method of high depth-to-width ratio micro metallic bundle pillar structure and special-purpose tool |
| CN101327535A (en) * | 2008-07-09 | 2008-12-24 | 南京航空航天大学 | Electrolytic machining method for micro-pit group using bipolar electrode and bipolar electrode thereof |
| CN101862870A (en) * | 2010-06-21 | 2010-10-20 | 南京航空航天大学 | Array micro-pit electrolytic machining method and system |
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