CN103433579A - Electrochemical machining method for micro-protrusions on inner surface of sleeve part - Google Patents
Electrochemical machining method for micro-protrusions on inner surface of sleeve part Download PDFInfo
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- CN103433579A CN103433579A CN2013104141362A CN201310414136A CN103433579A CN 103433579 A CN103433579 A CN 103433579A CN 2013104141362 A CN2013104141362 A CN 2013104141362A CN 201310414136 A CN201310414136 A CN 201310414136A CN 103433579 A CN103433579 A CN 103433579A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003754 machining Methods 0.000 title claims abstract description 22
- 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
- 238000009413 insulation Methods 0.000 description 4
- 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
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000009760 electrical discharge machining Methods 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
- 230000001050 lubricating effect Effects 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
- 238000005096 rolling process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000005469 synchrotron radiation Effects 0.000 description 1
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Abstract
The invention provides an electrochemical machining method for micro-protrusions on the inner surface of a sleeve part, belonging to the field of electrochemical machining. According to the electrochemical machining method, an elastic insulating sheet with a tiny group pore structure is utilized, one surface of the elastic insulating sheet facing to the part is subjected to conductive treatment, a tool cathode is formed by a conductive layer of the elastic insulating sheet and the elastic insulating sheet, the sleeve part is taken as a tool anode, electrolyte is filled between the cathode and the anode, and the anode and the cathode are respectively connected with a positive electrode and a negative electrode of a power supply for electrochemical machining to produce micro-protrusion structures on the inner surface of the sleeve part. By adopting the electrochemical machining method provided by the invention, the micro-protrusion structures can be formed on the inner surface of the sleeve part, and the electrochemical machining method has the characteristics of high production speed of the micro-protrusions, low cost and the like.
Description
Technical field
The present invention relates to the Electrolyzed Processing field, be specifically related to a kind of electrochemical machining method of sleeve part inner surface microprotrusion.
Background technology
In the lubricated field of the dynamics of tribology, the elastohydrodynamic lubrication theory is that the micro-bullet stream on the basis of grand bullet stream, microprotrusion produced carries out the new lubrication theory that series of studies obtains.Micro-bullet mobilization force lubrication theory, broken the more smooth better traditional view of machinery part surface of the contact of rolling in the mechanical field.Rough surface with the contact of microprotrusion structure is conducive to form elastic fluid power oil film, can improve tribological property, not only do not reduce the machinery part surface antiwear property, greatly improve bearing capacity and service life on the contrary, can meet the requirement of modern mechanical driven high-speed, heavy duty, therefore become the important breakthrough of lubrication theory.But for the processing microprotrusion, be also a difficult problem both at home and abroad at present.
At present, the main method of microprotrusion processing has: (1) laser processing technology, to adopt the negative out of focus of pulse laser beam after focusing of high-energy, high multiplicity frequency to shine surface of the work enforcement preheating and strengthening, focus point after focusing incides surface of the work and forms small molten bath, small molten bath is imposed on to the assist gas of setting pressure and flow by the side-blown device simultaneously, make the fused mass in molten bath form arc cam by specifying requirement to be stacked into melt tank edge.This processing method has the ablation effect to machining area, form microcosmic or macroscopic cracking, and processing cost is high; (2) spark erosion technique, process the female electrode of array micro hole by single electrode electric discharge or micro WEDM technology, again with female electrode instead 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 are restricted its raising of removing miniaturization level, machining accuracy and the surface quality of material; (3) LIKA(lithographie, galvanoformung und abformung) technology, adopt the LIGA technology can obtain the microprotrusion structure of sidewall, but due to the synchrotron radiation light source of LIGA Technology Need costliness, cost is high, the cycle is long, thereby has limited 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, realizes controlled working voltage, process time the processing of microprotrusion, not there will be stress and distortion, machined surface quality is high.But, for the processing of micro-structural, the tool-electrode that electrochemical Machining Technology is used or the making of mask structure are but its core difficult problems.The Chinese patent CN101327537A filed an application on December 24th, 2008 has disclosed 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 that micro-electrochemical machining is counter and copy (RECM) adding man-hour as tool cathode, obtain the micro-boss structure.On this basis, this patent proposes insulating layer deposition, after fine group's hole sidewall and the back side of metal otter board, effectively to weaken the electric-field intensity on bundle pillar surface, thereby obtain high depth-to-width ratio micro bundle pillar structure.The method is when being used 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 the dispersion corrosion phenomenon, causes micro-boss shape irregularity, not obvious, especially for the processing of minute protrusions structure.After carrying out sidewall and instrument back side insulation processing, the 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 the hole inwall, difficulty is very large.
Summary of the invention
The objective of the invention is the deficiency for current sleeve part inner surface microprotrusion structure processing method, proposed 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) make with small group's pore structure, and the tool cathode formed by elastic insulated thin plate and conductive layer;
(b) tool cathode is fixed in to clamping device, and clamping adds and can drive man-hour this clamping device to make tool cathode realize feeding to sleeve part to precision machine tool;
(c) sleeve part, as electrolytic anode, is connected anode, negative electrode respectively with the positive and negative electrode of electrolysis power, passes into electrolyte, implements Electrolyzed Processing;
(d), after electrolysis finishes, drive the negative electrode clamping device to return to initial position;
(e) control tool cathode rotary certain angle, then feeding again, implement Electrolyzed Processing;
(f) repeat above-mentioned (d) step and (e) step, until sleeve part inner surface microprotrusion, all electrochemical machining processes finish.
With known technology, compare, the present invention has following technique effect.
1. insulating thin simultaneously carries out conductive treatment over against the sleeve part inwall, form conductive layer, other face insulation of thin plate, this structure will shield the electric field between small group hole sidewall, newly-generated convex surfaces, thus the microprotrusion of the new generation of protection is not by ablation; This is simple in structure, easy to make, has avoided the difficult problem of the inwall insulation of small group's pore structure; In addition, for carry out the processing of microprotrusion on hole inwall or curved-surface structure, the resilient property of its tool-electrode has certain advantage.
2. tool-electrode does relative motion with respect to the workpiece anode, thereby processes the microprotrusion structure, and the tool-electrode of making can reuse, thereby greatly reduces cost.
3. low to the processing environment requirement, without ultra-clean space, without heating.
In sum, the microprotrusion structure of utilizing the present invention to process, have that cost is low, efficiency is high, and the tool-electrode characteristics that can be repeatedly used.
The accompanying drawing explanation
Fig. 1 is the tool cathode schematic diagram that sleeve part inwall micro-structural machining of the present invention is used.
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 diagram 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.
The specific embodiment
In order further to understand content of the present invention, 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.
The microprotrusion structure can play the effect of anti-attrition effectively, and this is verified in the bionic mechanical test.In electrochemical machining process, intend to adopt 3 electroforms, 1/3 of each Electrolyzed Processing inner surface.(certainly, also can adopt the electroform of other number of times).By reference to the accompanying drawings, concrete processing and implementation process is passed through following steps successively:
(1), with reference to shown in figure 1, adopt the drilling process technology, generally adopt inert metal at elastic insulated thin plate 2 and conductive layer 3(, as platinum etc.) 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 on the clamping device 7 with 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 inwalls;
(5) with reference to shown in figure 3, switch on power 6, carry out Electrolyzed Processing, at sleeve lining, obtain the microprotrusion structure;
(6) with reference to shown in figure 4, after process finishing, powered-down, shift out workpiece, obtains one section microprotrusion structure at the sleeve lining place.Process whole inner surface if want and there is the 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. the electrochemical machining method of a sleeve part inner surface microprotrusion, is characterized in that comprising the following steps:
(a) make with small group's pore structure, and the tool cathode (1) formed by elastic insulated thin plate (2) and conductive layer (3);
(b) tool cathode (1) is fixed in to clamping device (7), and clamping adds and can drive man-hour this clamping device (7) to make tool cathode (1) realize feeding to sleeve part (4) to precision machine tool;
(c) sleeve part (4), as electrolytic anode, is connected anode, negative electrode respectively with the positive and negative electrode of electrolysis power (6), passes into electrolyte (5), implements Electrolyzed Processing;
(d), after electrolysis finishes, drive negative electrode clamping device (7) to return to initial position;
(e) control tool negative electrode (1) rotates to an angle, then feeding again, implements Electrolyzed Processing;
(f) repeat above-mentioned (d) step and (e) step, until sleeve part inner surface microprotrusion, all electrochemical machining processes finish.
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| CN201310414136.2A CN103433579B (en) | 2013-09-12 | 2013-09-12 | A kind of electrochemical machining method of sleeve part inner surface microprotrusion |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962662A (en) * | 2014-05-15 | 2014-08-06 | 章华 | Method for forming valve mark |
| CN104384643A (en) * | 2014-10-16 | 2015-03-04 | 南京航空航天大学 | Electrolytic machining method for thin-wall machine case of aero-engine |
| CN112894038A (en) * | 2021-02-26 | 2021-06-04 | 河海大学常州校区 | Curved surface electrolytic machining device and system |
| CN113369607A (en) * | 2021-06-09 | 2021-09-10 | 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 |
| WO2021189876A1 (en) * | 2020-03-25 | 2021-09-30 | 苏州大学 | Machining method for forming microstructure on surface of workpiece and control system |
| WO2021212825A1 (en) * | 2020-10-27 | 2021-10-28 | 河南理工大学 | Apparatus for continuous-mask electrolysis processing of metal microstructure |
| CN113977019A (en) * | 2021-12-03 | 2022-01-28 | 南京航空航天大学 | Plunge type sweeping electrolytic 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962662A (en) * | 2014-05-15 | 2014-08-06 | 章华 | Method for forming valve mark |
| CN104384643A (en) * | 2014-10-16 | 2015-03-04 | 南京航空航天大学 | Electrolytic machining method for thin-wall machine case of aero-engine |
| WO2021189876A1 (en) * | 2020-03-25 | 2021-09-30 | 苏州大学 | Machining method for forming microstructure on surface of workpiece and control system |
| WO2021212825A1 (en) * | 2020-10-27 | 2021-10-28 | 河南理工大学 | Apparatus for continuous-mask electrolysis processing of metal microstructure |
| CN112894038A (en) * | 2021-02-26 | 2021-06-04 | 河海大学常州校区 | Curved surface electrolytic machining device and system |
| CN113369607A (en) * | 2021-06-09 | 2021-09-10 | 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 |
| 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 |
| CN113977019A (en) * | 2021-12-03 | 2022-01-28 | 南京航空航天大学 | Plunge type sweeping electrolytic 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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