CN104726928A - Electrochemical polishing device for inner surface of long and thin pipeline - Google Patents
Electrochemical polishing device for inner surface of long and thin pipeline Download PDFInfo
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- CN104726928A CN104726928A CN201510100144.9A CN201510100144A CN104726928A CN 104726928 A CN104726928 A CN 104726928A CN 201510100144 A CN201510100144 A CN 201510100144A CN 104726928 A CN104726928 A CN 104726928A
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Abstract
The invention provides an electrochemical polishing device for the inner surface of a long and thin pipeline and belongs to the field of precise non-traditional machining. The structure of the electrochemical polishing device comprises a control terminal module, a power supply system, a monitoring module and a processing main body, wherein the control terminal module has a function of displaying each current environmental parameter of the device; a monitoring system comprises the monitoring module for monitoring each environmental parameter. The electrochemical polishing device disclosed by the invention adopts a tool electrode with a spiral slot structure; during polishing, the tool electrode performs axial linear reciprocating movement and rotary motion to realize full controllable perturbation of a fluid inside the pipeline and take away air bubbles and processing precipitates generated during processing, so that electrolytic reaction on the inner surface of the long and thin pipeline is performed uniformly; a vacuum pump is used for sucking out electrolyte from the bottom end of the pipeline so as to prevent ejection of the electrolyte during processing; the electrolyte is fully purified by an electrolyte circulating filtration system, so the service life of the electrolyte is prolonged; the temperature of the electrolyte can be regulated and controlled in real time by an electrolyte heating system, so that the polishing effect is improved.
Description
Technical field
The invention belongs to nontraditional precision machining field, in particular to a kind of electrochemical polish apparatus of slender pipeline internal surface, an i.e. electrochemical polish apparatus, coordinates a kind of tool-electrode had, and can realize the device of the accurate electrochemical etching to slender pipeline internal surface.
Background technology
Along with the development of industrial technology, domestic and international market is also increasing to the demand of weldless steel tube, specification of quality is also more and more higher, especially at medicine, food, chemical industry, aviation, nuclear industry, space industry, more and more stricter to the requirement of slender pipeline inner surface quality.Especially, when small-bore pipeline being applied to fluid conveying, its surface quality directly impact can transport the liquid residue of effect and internal surface thereof.Mainly can be divided into the method that pipeline carries out internal surface processing at present: the magnetic grinding polishing of mechanical polishing, electropolishing and chemical rightenning, ultrasonic vibration polishing and magnetic abrasive.And when internal diameter of the pipeline is less, above working method has some limitations.As the surperficial hone polish processing technology in standard machinery glossing, it mainly adopts the oilstone be embedded on honing head to carry out precise polished to precision machined surface.In honing process, honing head not only rotates but also move reciprocatingly, and the surface roughness Ra after machining can reach 0.025 μm.But due to the limitation of size of honing head, the internal surface polishing to the small-bore pipeline compared with big L/D ratio can not be realized.(the Wu Menghua such as Wu Menghua, Chen Yong. the pulsively electrochemical polishing [J] of minor diameter thin wall stainless steel inside pipe wall. machinofacture, 2002,40 (7): 38-39.) the stainless steel tube with small diameter internal surface electrochemical polish apparatus proposed, by adopting the method for electropolishing, can effectively process the elongated straight tube of more than 2mm bore, it is 0.1 μm that the inner surface of pipeline roughness after polishing can reach Ra.But because processing unit (plant) integration degree is lower, dismounting process is loaded down with trivial details, and working (machining) efficiency is lower.Meanwhile, the reciprocation cycle mainly controlling workpiece due to this device moves to reach the object that the electrolytic solution in pipeline upgrades, and this just causes when duct length is longer, there is the problems such as polishing effect is undesirable, area carbon.Wang Qi (Wang Qi. pipe electropolishing movable electricity (the moon) pole [P] in stainless steel. Chinese patent: CN102703963A, mobile electrode 2012-10-03) proposed can realize the electropolishing of internal surface of elongated tube, but due to the restriction of its tool electrode structure, this device can the internal diameter of the pipeline of polishing generally at more than 10mm.(the Liang Yande such as Liang Yande, Shu Liming, Xia Heng, Deng. a kind of inner surface of elongated bend pipe electropolishing tool-electrode [P]. Chinese patent: CN103820844A, a kind of flexible chain structure tool electrode 2014-03-03) proposed effectively can carry out electropolishing to slender pipeline internal surface, but it is not described in detail and design burnishing device.
Summary of the invention
For solving the problem of the precise polished difficulty of slender pipeline internal surface, the invention provides a kind of burnishing device based on electrochemical slender pipeline internal surface, achieving the electrochemical etching to slender pipeline internal surface.
The electrochemical polish apparatus of a kind of slender pipeline internal surface of the present invention, its structure comprises control terminal module, power module, Monitoring systems and processing main body, as shown in Figure 1.
Control terminal module is made up of PC and lower computer two portions.PC has and receives and process present apparatus voltage swing that monitoring modular sends, size of current, current waveform, electrolyte temperature, tool-electrode position, the data such as tool-electrode rotating speed and electrolyte flow rate, and the function of these data of simultaneous display; Meanwhile, PC, after contrasting with setting data, sends instruction to lower computer.After lower computer receives instruction, respectively water bath heating device, DC motor Driver module, driven by servomotor module and vacuum pump are controlled, as shown in Figure 2.
Power module is made up of installation's power source and polishing power supply two portions.Installation's power source is respectively control terminal module, standby circuit, the direct-current machine of processing body interior and servomotor and provides the energy; Polishing power supply is separately for electrochemical polishing process provides the energy.
Described Monitoring systems comprises current monitoring module, voltage monitoring module, temperature sensor module, position transducer module, tachogenerator module and flow monitoring module.The data such as the tool-electrode position of Monitoring systems control measurement in the course of processing, tool-electrode rotating speed, electrolyte flow rate and electrolyte temperature, and feed back to control terminal.Each module is monitored the processing electric current of device in the course of processing, machining voltage, electrolyte temperature, tool-electrode position, tool-electrode rotating speed and electrolyte flow rate respectively.Above-mentioned monitoring data is uploaded to control terminal module by data acquisition module and carries out processing and showing.
Described processing main body comprises: electrolyte filtering and the recycle system, electrolytic solution heating system, frame, X-Y fine adjustment stage, motor leading screw slide unit, direct-current machine, accurate main shaft parts, v-shaped bearing frame, tool-electrode, piece-holder assembly and structure of assistant support.The structural representation of processing main body as shown in Figure 3.
Described electrolyte filtering and the recycle system are made up of vacuum pump, reducing valve, under meter, anticorrosive tubing, filtration gauze and reverse osmosis groove.Vacuum pump is connected directly between on pipeline clamping device by anticorrosive tubing, by electrolytic solution from sucking-off in pipeline, through the filtration of filtration gauze and reverse osmosis groove, realizes circulation and the filtration of electrolytic solution.
Described electrolytic solution heating system is by water bath heating device, and well heater, electrolyte temperature sensor, bath temperature sensor forms.This system adopts the form of heating in water bath, and the temperature realizing electrolytic solution controls.
Described X-Y fine adjustment stage is arranged in frame, and implementation tool electrode, in the movement of X-Y plane, ensures that tool-electrode axis is coaxial with conduit axis.
Described servomotor and ball-screw slide unit form motor leading screw slide unit, and the reciprocating linear of implementation tool electrode in pipeline moves.
Described accurate main shaft parts comprise tool-electrode chuck, accurate optical axis, form from belt pulley and steel ball.Accurate optical axis top has spherical structure, matches with steel ball.In the vertical direction, from the installation site of belt pulley lower than the main pulley be fixed on direct-current machine.The component in one, accurate optical axis direction straight up can be given by belt, Metal Ball and steel ball, electrolysis positive terminal are fitted tightly.The detailed construction schematic diagram of main shaft portion as shown in Figure 4.
Described v-shaped bearing frame is made up of V-type support and diamond cylinder, and belt gives the pulling force of an optical axis horizontal direction, and optical axis and V-type groove are fitted tightly.The plan structure schematic diagram of described V-type bracing frame as shown in Figure 5.
Described tool-electrode is made up of the metal that electroconductibility is good, and surface has spiral grooves structure, is arranged on ball-screw slide unit.It can strengthen the radial flow of electrolytic solution in electrode rotary process, and the bubble accelerating to produce in the course of processing departs from from finished surface with processing sediment, weakens concentration polarization, and then improves the processing quality of inner surface of pipeline.The structural representation of described tool-electrode as shown in Figure 6.
Described piece-holder assembly is made up of piece pole dop, ring flange, antiseptic rubber seal washer, terminal stud and electrolyzer.The structural representation of described tool holding assembly as shown in Figure 7.Described ring flange and electrode dop adopt Morse's taper to carry out axis hole to be connected; Workpiece directly inserts the sealing that rubber seal inside realizes electrolyte channel.Described terminal stud is directly connected with polishing power cathode.Described electrolyzer adopts insulation corrosion resistant material to make, can long-time anti-electrolytic corrosion.
The present invention has the tool-electrode of spiral grooves structure by adopting, simultaneously tool-electrode carries out axial straight line and moves back and forth and turning motion in polishing process, the abundant controlled disturbance to fluids within pipes can be realized, take away the bubble and processing sediment that produce in the course of processing, the electrolytic reaction of slender pipeline internal surface is evenly occurred; Electrolytic solution from the sucking-off of pipeline bottom, is avoided electrolytic solution in the course of processing and there is the situation of spraying by employing vacuum pump; Circulation of elecrolyte filtering system makes electrolytic solution be fully purified, and extends electrolytic solution work-ing life; Electrolytic solution heating system makes the temperature of electrolytic solution realize real-time monitoring, improves polishing effect.The present invention can be widely used in precision optical machinery processing and manufacturing field, is particularly useful for the internal surface polishing of slender pipeline.
Accompanying drawing explanation
Fig. 1 is that structure of the present invention is always schemed.
Fig. 2 is device control planning figure.
Fig. 3 is processing main part structure iron of the present invention.
Fig. 4 is the structure iron of main shaft module.
Fig. 5 is the sectional view of v-shaped bearing frame.
Fig. 6 is tool-electrode enlarged view.
Fig. 7 is the structure iron of work holder.
In figure: 1 polishing power module; 2 control terminals; 3 monitoring modulars; 4 processing main bodys; 5 current monitoring modules; 6 voltage monitoring modules; 7 temperature sensing module; 8 position sensing modules; 9 revolution speed sensing modules; 10 flow monitoring modules; 11 data acquisition modules; 12PC; 13 lower computers; 14 water bath heating devices; 15 driver modules; 16 servomotors; 17 direct-current machine; 18 vacuum pump 19 well heaters; 20 body lotions; 21 electrolyte temperature sensors; 22 bath temperature sensors; 23 filtration gauze; 24 under meters; 25 throttling valve; 26 tool-electrodes; 27 main shaft module; 28 velocity sensors; 29 servomotors; 30 ball-screw slide units; 31X-Y fine adjustment stage; 32 frames; 33 work holders; 34 electrolytic solution; 35 supports; 36 tool-electrode chucks; 37 accurate optical axises; 38V type resting support one; 39 from belt pulley; 40V type resting support two; 41 steel balls; 42 positive terminals; 43 spindle carriers; 44 direct-current machine; 45 direct-current machine supports; 46 main pulleys; 47 belts; 48 diamond cylinders; 49 tool-electrode bare terminal ends; 50 external envelope faces; 51 spiral grooves; 52 anticorrosive tubings; 53 flanges; 54 Workpiece clamping heads; 55 rubber gaskets; 56 workpiece; 57 terminal studs; 58 electrolyzer base plates.
Embodiment
Describe the present invention below in conjunction with accompanying drawing and technical scheme.
As shown in Figures 1 to 7, the electrochemical polish apparatus of a kind of slender pipeline internal surface of the present invention, shown in, its concrete structure comprises: polishing power module 1, control terminal 2, monitoring modular 3, processing main body 4.The machinable workpiece diameter of device is of a size of 1 ~ 20mm, and can processing length be 10 ~ 350mm, surfaceness can reach more than 0.05 μm, reaches mirror effect.
Lower computer 13 in described monitoring modular adopts Arduino Uno R3 master control board, has that packaging effects is high, the feature of good reliability; Temperature sensing module 7, primarily of pt100 temperature sensor and corresponding junction circuit composition, is measured water-bath temperature and electrolyte temperature respectively; Position sensing module 8 is made up of PPM-WYDC series of straight lines displacement sensor, up and down travel switch and interlock circuit thereof, measures in real time tool-electrode position; Revolution speed sensing module 9 is made up of SZHG-01 Hall effect tachometric transducer and interlock circuit thereof, measures in real time the speed of mainshaft; Flow monitoring module 10 is made up of electromagnetic flow sensor and interlock circuit thereof, measures in real time electrolyte flow rate.Polishing power acquisition adjustable pulse stabilized current supply in polishing power module, can adjust dutycycle, voltage, output waveform, can adapt to different work material and finish size in the course of processing.
Described processing main body 4 is primarily of electrolyte filtering and the recycle system, electrolytic solution heating system, frame 32, X-Y fine adjustment stage 31, ball-screw slide unit 30, servomotor 29, direct-current machine 44, accurate main shaft parts 27, v-shaped bearing frame 38, tool-electrode 26, piece-holder assembly and structure of assistant support form.Direct-current machine 44 used is 565 series, and speed of mainshaft variable range is 0 ~ 3000rpm; Tool-electrode 26 mobile accuracy in X-Y plane is 0.02mm, and stroke is 0 ~ 50mm, and Z-direction stroke is 0 ~ 400mm.Electrolyte temperature is controlled by bath temperature, and temperature-controllable scope is 20 ~ 95 DEG C, and control accuracy is 0.5 DEG C.Electrolyte flow rate has vacuum pump and throttle valve control, and adjustable flow rates is 0 ~ 400ml/min.The helix angle of tool-electrode 26 is 30 °, and groove shape is circular arc type.
Take processing length as 150mm, internal diameter is the stainless steel tubule of 2mm is that example carries out machining experiment.Electrolytic solution adopts 35% sulfuric acid, 20% phosphoric acid, and 45% water configuration forms; Electrolyte temperature is set to 60 DEG C, and flow velocity is set to 100ml/min; Tool-electrode diameter 1mm, is made up of brass; Z-direction translational speed is 100mm/min, and the speed of mainshaft is set to 1000rpm; Adopt DC current stabilized power supply, processing electric current 1A; Process period is 5min.
Before processing, first pipeline 56 to be processed is arranged on work holder 33.Mobile X-Y fine adjustment stage 31, adjustment tool-electrode 26 position makes its axis and pipeline to be processed 56 axis coaxle.Control terminal 2 inputs machined parameters, comprising: leading screw Z-direction translational speed, the velocity of rotation of tool-electrode, falling head and cycle index, current value, current waveform, circulation of elecrolyte flow velocity.Parameters instruction is communicated to lower computer 13 by control terminal 2, and lower computer 13 controls servomotor 29, the velocity of rotation of direct-current machine 44 is processed.
Open electrolyte circulation system, electrolytic solution, due to the effect of vacuum pump 18, makes electrolytic solution constantly flow into polished pipe interior.After starting processing, servomotor 29 starts, and is converted into the motion straight up of Z axis by ball-screw slide unit 30, until encounter travel switch to reach mechanical zero, realizes the back to zero of Z axis.After this, direct-current machine 44 drives the rotation of tool-electrode 26 by belt 47.In the course of processing, tool-electrode 26 does turning motion one side in the vertical direction around axis and does reciprocating linear motion.Thus the abundant disturbance realized fluids within pipes, take away the bubble and processing sediment that produce in the course of processing simultaneously, the electrochemical reaction of elongate steel pipe internal surface is evenly occurred.Meanwhile, measure the speed of mainshaft, speed of feed, electrolyte temperature, water-bath temperature, voltage and size of current in real time by monitoring modular, and show at control terminal.After machining, pipeline is cut and after cleaning, carries out roughness concentration, its roughness R
adrop to 0.04 μm by original 9.85 μm, reach mirror effect.
Claims (2)
1. an electrochemical polish apparatus for slender pipeline internal surface, comprises control terminal module, power-supply system, Monitoring systems and processing main body; It is characterized in that,
Described processing main body comprises electrolyte filtering and the recycle system, electrolytic solution heating system, frame, X-Y fine adjustment stage, ball-screw slide unit, servomotor, direct-current machine, accurate main shaft parts, v-shaped bearing frame, tool-electrode, piece-holder assembly and structure of assistant support;
Described electrolyte filtering and the recycle system are made up of vacuum pump, reducing valve, under meter, anticorrosive tubing, filtration gauze and reverse osmosis groove, vacuum pump is connected directly between on pipeline clamping device by anticorrosive tubing, by electrolytic solution from sucking-off in pipeline, through the filtration of filtration gauze and reverse osmosis groove, realize circulation and the filtration of electrolytic solution;
Described electrolytic solution heating system is made up of water bath heating device, well heater, electrolyte temperature sensor, bath temperature sensor, adopts the form of heating in water bath, and the temperature realizing electrolytic solution controls;
Described X-Y fine adjustment stage is arranged in frame, and implementation tool electrode, in the movement of X-Y plane, ensures that tool-electrode axis is coaxial with conduit axis;
Described servomotor and ball-screw slide unit form motor leading screw slide unit, and the reciprocating linear of implementation tool electrode in pipeline moves;
Described accurate main shaft parts comprise tool-electrode chuck, accurate optical axis, from belt pulley and steel ball; Accurate optical axis top has spherical structure, matches with steel ball; In the vertical direction, from the installation site of belt pulley lower than the main pulley be fixed on direct-current machine; The component in one, accurate optical axis direction straight up can be given by belt, Metal Ball and steel ball, electrolysis positive terminal are fitted tightly;
Described v-shaped bearing frame is made up of V-type support and diamond cylinder, and belt gives the pulling force of an optical axis horizontal direction, and optical axis and V-type groove are fitted tightly;
Described tool-electrode is made of metal, and surface has spiral grooves structure, is arranged on ball-screw slide unit; It is in electrode rotary process for strengthening the radial flow of electrolytic solution, and the bubble accelerating to produce in the course of processing departs from from finished surface with processing sediment, weakens concentration polarization, improves the processing quality of inner surface of pipeline;
Described piece-holder assembly is made up of piece pole dop, ring flange, antiseptic rubber seal washer, terminal stud and electrolyzer; Described ring flange and electrode dop adopt Morse's taper to carry out axis hole to be connected; Workpiece directly inserts the sealing that rubber seal inside realizes electrolyte channel; Described terminal stud is directly connected with polishing power cathode; Described electrolyzer adopts insulation corrosion resistant material to make, long-time anti-electrolytic corrosion.
2. electrochemical polish apparatus according to claim 1, is characterized in that, the described installation site from belt pulley is lower than the main pulley be fixed on direct-current machine.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780101A (en) * | 2016-01-27 | 2016-07-20 | 杨继芳 | Novel electrolysis polishing equipment |
| CN107052992A (en) * | 2016-11-16 | 2017-08-18 | 吉林大学 | A kind of polishing fluid supplies burnishing machine in allocating online |
| CN108570705A (en) * | 2018-05-02 | 2018-09-25 | 宣城品宙洁净科技有限公司 | A kind of electrobrightening equipment for stainless steel inside pipe wall |
| CN108754595A (en) * | 2018-07-05 | 2018-11-06 | 刘素兰 | Stainless steel pipe inner surface electrolysis system and its application method |
| CN109227398A (en) * | 2018-10-22 | 2019-01-18 | 东莞河谷自动化科技有限公司 | A kind of polishing fluid filtration system |
| CN109594119A (en) * | 2018-12-11 | 2019-04-09 | 大连理工大学 | A kind of electroluminescent chemical polishing device and its working method |
| CN113997189A (en) * | 2021-12-31 | 2022-02-01 | 太原科技大学 | Electrolytic and mechanical composite grinding device and method for inner diameter of long straight pipe |
| CN113997188A (en) * | 2021-12-31 | 2022-02-01 | 太原科技大学 | Precise pipe electrolysis and mechanical composite polishing device and method |
| CN114921842A (en) * | 2022-03-24 | 2022-08-19 | 南京航空航天大学 | Device and method for plasma electrolytic polishing of inner wall of large rotary part |
| CN116046730A (en) * | 2023-04-03 | 2023-05-02 | 宁德时代新能源科技股份有限公司 | Electrolyte monitoring device, method, storage medium, and program product |
| CN116065225A (en) * | 2023-03-31 | 2023-05-05 | 太原理工大学 | Electrolytic polishing device for inner wall of special-shaped micro-fine tube |
| CN117071041A (en) * | 2023-10-13 | 2023-11-17 | 苏州派普机械有限公司 | Electroplating equipment for petrochemical parts |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105780101A (en) * | 2016-01-27 | 2016-07-20 | 杨继芳 | Novel electrolysis polishing equipment |
| CN105780101B (en) * | 2016-01-27 | 2018-06-26 | 杨继芳 | A kind of Novel electrolytic polissoir |
| CN107052992A (en) * | 2016-11-16 | 2017-08-18 | 吉林大学 | A kind of polishing fluid supplies burnishing machine in allocating online |
| CN107052992B (en) * | 2016-11-16 | 2023-05-23 | 吉林大学 | Polishing solution on-line blending internal supply polishing machine tool |
| CN108570705A (en) * | 2018-05-02 | 2018-09-25 | 宣城品宙洁净科技有限公司 | A kind of electrobrightening equipment for stainless steel inside pipe wall |
| CN108754595A (en) * | 2018-07-05 | 2018-11-06 | 刘素兰 | Stainless steel pipe inner surface electrolysis system and its application method |
| CN109227398A (en) * | 2018-10-22 | 2019-01-18 | 东莞河谷自动化科技有限公司 | A kind of polishing fluid filtration system |
| CN109594119A (en) * | 2018-12-11 | 2019-04-09 | 大连理工大学 | A kind of electroluminescent chemical polishing device and its working method |
| CN113997188A (en) * | 2021-12-31 | 2022-02-01 | 太原科技大学 | Precise pipe electrolysis and mechanical composite polishing device and method |
| CN113997189B (en) * | 2021-12-31 | 2022-04-01 | 太原科技大学 | Electrolytic and mechanical composite grinding device and method for inner diameter of long straight pipe |
| CN113997189A (en) * | 2021-12-31 | 2022-02-01 | 太原科技大学 | Electrolytic and mechanical composite grinding device and method for inner diameter of long straight pipe |
| CN114921842A (en) * | 2022-03-24 | 2022-08-19 | 南京航空航天大学 | Device and method for plasma electrolytic polishing of inner wall of large rotary part |
| CN114921842B (en) * | 2022-03-24 | 2023-09-29 | 南京航空航天大学 | Device and method for polishing inner wall of large rotary part through plasma electrolysis |
| CN116065225A (en) * | 2023-03-31 | 2023-05-05 | 太原理工大学 | Electrolytic polishing device for inner wall of special-shaped micro-fine tube |
| CN116065225B (en) * | 2023-03-31 | 2023-06-16 | 太原理工大学 | Electrolytic polishing device for inner wall of special-shaped micro-fine tube |
| CN116046730A (en) * | 2023-04-03 | 2023-05-02 | 宁德时代新能源科技股份有限公司 | Electrolyte monitoring device, method, storage medium, and program product |
| CN117071041A (en) * | 2023-10-13 | 2023-11-17 | 苏州派普机械有限公司 | Electroplating equipment for petrochemical parts |
| CN117071041B (en) * | 2023-10-13 | 2023-12-29 | 苏州派普机械有限公司 | Electroplating equipment for petrochemical parts |
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