CN101327538A - Electrolytic machining method and apparatus for array deep hole - Google Patents
Electrolytic machining method and apparatus for array deep hole Download PDFInfo
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- CN101327538A CN101327538A CNA2008100223292A CN200810022329A CN101327538A CN 101327538 A CN101327538 A CN 101327538A CN A2008100223292 A CNA2008100223292 A CN A2008100223292A CN 200810022329 A CN200810022329 A CN 200810022329A CN 101327538 A CN101327538 A CN 101327538A
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Abstract
The invention relates to a deep-hole array electrolysis process and a device thereof, which belongs to the technical field of electrochemical machining. The method includes the following steps: (a) an electrode gripping module is used to grip an electrode series, wherein, the gripping module is installed on a module frame (4); (b) workpiece surface is used for overall amendment and alignment of the electrode; (c) a fastening device is used to adjust the gripping force of the electrode. The device comprises an electrical source, a cathode system, a workpiece anode and an electrolyte system. The invention can improve the gripping efficiency and the aligning efficiency, and is conducive to the replacement of the electrode, and the aperture processed is uniform.
Description
Affiliated technical field
Array deep hole electrochemical machining method of the present invention and device belong to technical field of electrolysis processing.
Background technology
In the Aeronautics and Astronautics manufacturing industry, frequent application is to numerous parts that have micro hole, and these apertures cool off hole etc. as the gas mould on hollow cooling turbine bucket and the engine combustion locular wall, and not only the aperture is little, aspect ratio is big, and requires hole surface not have recast layer.These characteristics have brought a lot of difficulties for the processing in hole.At present, the processing method of these apertures mainly comprises at present: 1. Laser Processing: can process the high rigidity metal, efficient is higher, but has surperficial recast layer problem, and cost is higher; 2. spark machined: can process the high rigidity metal, but have surperficial recast layer problem equally; 3. machinery dashes, bores: for space flight part carbide alloy commonly used, productivity ratio is extremely low, and instrument scrappage height; 4. electrolysis punching (Electrochemical drilling is called for short ECD), there is not surperficial recast layer problem in the production efficiency height.
Electrolysis punching is a kind ofly as negative electrode the workpiece anode to be carried out the electrochemistry ablation with metal type pipe, and finally is processed into the technology in type hole.This technology has and not limited by workpiece material hardness, and crudy is good, and characteristics such as instrument is lossless, in industries such as aviation, weapons, mould manufacturings important use is arranged.Adopt the array metal electrode to carry out the processing of electrolysis hole and then can significantly boost productivity, and guaranteed favorable surface quality.Therefore, array metal electrode Electrolyzed Processing has good application prospects, is processed with many difficult points but adopt array metal electrode anchor clamps to carry out group hole, and this has limited this The Application of Technology.Difficult point mainly comprises:
1, electrode clamping, replacing difficulty.Cause electrode sparking burn in the electrolysis punching sometimes, just need to change electrode, according to existing group's electrode holder, especially diameter is at the electrode below 1 millimeter, be fixed together with retained part is permanent often, single electrode damage just needs all to change electrode assembly, incurs loss through delay man-hour and has increased cost.
2, electrode location, tool setting difficulty.After electrode all is fixed on the anchor clamps, can't guarantee that the end face of all electrodes formation is consistent with the processing work surface configuration, particularly particularly serious under the curved surface situation.Therefore also need electrod-array is revised, in case phenomenons such as working depth is inconsistent occur.If electrode is nonvolatil fixing, then can only revise by technologies such as polishings, so not only damage the dielectric film of electrode and destruction electrode side easily, also expend man-hour.
3, the assignment of traffic between the different electrode tubes is inhomogeneous.When using group's electrode to carry out the electrolysis punching, all electrodes are processing work simultaneously, forms the hole array of arranging identical with electrode tube simultaneously on workpiece.Adding man-hour electrolyte is to be transported to the cavity from electrolytic bath by pipeline by high-pressure pump, is assigned to the arrival end of all pipe electrodes again by cavity.Because the position difference of each electrode tube inlet in cavity is often uneven by the flow of electrolyte of each electrode tube.This will cause the processing conditions of each electrode difference to occur, will occur various disadvantageous differences such as aperture, hole quality and process velocity speed between the hole that finally causes being processed, and causes machining accuracy to descend, and occurs short circuit phenomenon easily.
Summary of the invention
The present invention is intended to improve the clamping efficient that occurs when group electrode holder is used to process array hole and defective such as tool setting efficient is not high, cost is too high, flexibility is low, and a kind of array deep hole electrochemical machining method and device are provided.Can improve clamping efficient and tool setting efficient, be easy to change electrode, and processing aperture good uniformity.
Plant the array deep hole electrochemical machining method, it is characterized in that may further comprise the steps:
(a), utilize electrode clamping module clip to hold serial electrode, the clamping module is installed on the module frame (4);
(b), utilizing surface of the work that electrode is carried out integral body revises and tool setting;
(c), utilize device for fastening to regulate the electrode chucking power.
A kind of array deep hole electrolysis unit, comprise: power supply, cathod system, workpiece anode, electrolyte system is characterized in that described cathod system comprises with lower member: the clamping module of being made up of some electrode fixture blocks (3), the module frame (4) that is used for fixing the clamping module, the serial electrode by the clamping of clamping module, be used to tighten up the device for fastening of electrode fixture block (3).
The clamping module that the present invention uses is made up of some electrode fixture blocks.Semicircular groove is distributing on two sides of each electrode fixture block.These bonding jumpers are arranged the clamping hole array that promptly forms by the particular requirement distribution, and the diameter of these clamping holes is consistent with the diameter of the electrode of clamping.
The clamping module is fixed on the module frame.At frame facet nut being installed is used for fastening or loosens electrode.Metal framework is fixed to the front end of feed flow part again, forms airtight cavity.In whole anchor clamps, the clamping module is detachable and changes, and makes simple, with low cost.Can design and be applicable to different number of electrodes, different electrode diameters, the clamping module that different spacing is arranged to be satisfying different technological requirements, and do not need to redesign integral clamp.
Be provided with wire netting in the feed flow cavity, after electrolyte enters the electrolyte distribution cavity by electrolyte entrance, be redistributed in each electrode tube by wire netting earlier.Because electrolyte cross section when pipeline enters cavity enlarges, occur destabilizing factor such as whirlpool, pulsation in the cavity and cause Flow Field Distribution inhomogeneous, wire netting is installed then can reduce this inequality greatly, and the flow velocity in each electrode tube is reached unanimity.This wire netting is generally tens to the hundreds of order, and dismounting and change at any time is to adapt to the flow homogenising scheme of different electrolytes pressure.
After electrode module, wire netting all configured, anchor clamps can be installed to and carry out group hole processing operation on the electrolytic machine tool.Utilize the degree of tightness nut of electrode clamping module, can in tool setting, utilize the workpiece anode that the shape correction is carried out in the end of group's electrode, both saved the time, improved precision again.This method is equally applicable to the workpiece that machined surface is a curved surface.
Description of drawings
Fig. 1 is the clamping module diagram.
Fig. 2 is a group electrode holder structural representation.
Fig. 3 is an electrode tool setting process schematic diagram.
Label title wherein: 1, group's electrode holder, 2, electrode tube, 3, the electrode fixture block, 4, module frame, 5, reconcile nut, 6, the feed flow chamber, 7, chamber wall, 8, wire netting, 9, electrolyte entrance, 10, machine tool chief axis, 11, workpiece anode, 12, back-up ring, 13, electrode processing end face, 14, hickey.
The specific embodiment
Among Fig. 1, electrode clamping module is made up of electrode 2 and electrode fixture block 3.The quantity of electrode fixture block 3 and size are decided on the electrode position of arranging.The length of employed electrode tube 2 can have a little difference, and electrode processing end 13 also needn't accurately flush during equipment.
In group's electrode structure shown in Figure 2, wire netting 8 is fixed in the feed flow chamber 6 of electrolyte, and wire side distance electrode inlet should keep certain distance.Electrode clamping module and metal framework 4 are interference fit.The clamping module is completely fixed by back-up ring on the chamber wall 7 12 and module frame 4, can not move.And electrode tube 2 is at the frictional force clamping that is axially only produced at sidewall by electrode fixture block 3, and the clamping dynamics is controlled by the adjusting nut 5 that is fixed on the module frame 4.
Among Fig. 3, electrode arrangement is on the electrolytic machine tool main shaft, and workpiece is fixed on the workbench of below.(a) be the flat preceding anchor clamps state of electrode, the anchor clamps state when (b) coming downwards to designated depth for main shaft (c) is finished for putting down, the state of main shaft rollback, and this moment, each electrode processing end 13 had very high horizontal uniformity.Whole more flat process also is the tool setting process.
Concrete implementation step of the present invention is:
1. with reference to figure 1, the electrod-array that electrode tube 2 is formed is assembled by row by electrode fixture block 3, constitutes electrode clamping module.
2. with reference to figure 2, earlier wire netting 8 is fixed in the feed flow chamber 6.Afterwards the electrode clamping module that assembles is installed in the module frame 4.Module frame 4 is fixed on the chamber wall 7 in feed flow chamber again.
3. with reference to figure 3 (a), the anchor clamps that are equipped with are installed on the machine tool chief axis 10 of numerical control electrolytic machine tool by interface 14, adjusting nut 5 is to the state of chucking power minimum.The control machine tool feed, when being fed into electrode and workpiece 11 position contacting, still continue the certain distance of feeding (neglect the alternate position spike of welding tip 13 greatly and decide), because the relative machine tool chief axis 10 of clamping module is fixed, so electrode will be under the effect of workpiece overcome friction up, the lower surface of final feasible group's electrode, i.e. electrode processing end 13 keeps the while contact workpiece, shown in figure (b).This moment, adjusting nut 5 was all fastening with electrode, and control machine tool chief axis 10 rollback certain distances, and this distance is the initial manufacture gap, sees figure (c).Set process velocity then, open electrolyte circulation system, the control axis feeding can carry out group hole Electrolyzed Processing operation.
Claims (8)
1, plant the array deep hole electrochemical machining method, it is characterized in that may further comprise the steps:
(a), utilize electrode clamping module clip to hold serial electrode, the clamping module is installed on the module frame (4);
(b), utilizing surface of the work that electrode is carried out integral body revises and tool setting;
(c), utilize device for fastening to regulate the electrode chucking power.
2, array deep hole electrochemical machining method according to claim 1 is characterized in that: described electrode is electrode tube (2), and it directly partly is connected with the feed flow of electrolyte system, to give the processing district feed flow.
3, array deep hole electrochemical machining method according to claim 1 is characterized in that: at various machined surfaces is that the workpiece of curved surface carries out the disposable quick correction and the tool setting of electrode.
4, array deep hole electrochemical machining method according to claim 2 is characterized in that: the feed flow part of the electrolyte system of narrating forms airtight cavity with described module frame, and this airtight cavity is feed flow chamber (6).
5, a kind of array deep hole electrolysis unit, comprise: power supply, cathod system, workpiece anode, electrolyte system is characterized in that described cathod system comprises with lower member: the clamping module of being made up of some electrode fixture blocks (3), the module frame (4) that is used for fixing the clamping module, the serial electrode by the clamping of clamping module, be used to tighten up the device for fastening of electrode fixture block (3).
6, array deep hole electrolysis unit according to claim 5, it is characterized in that: semi-circular recesses is distributing on two sides of described electrode fixture block (3), semi-circular recesses on the adjacent electrode fixture block (3) constitutes the clamping hole array, and the diameter of these clamping holes is consistent with the diameter of the electrode of clamping.
7, according to claim 5 or 6 described array deep hole electrolysis units, it is characterized in that: described electrode is electrode tube (2), and it directly partly is connected with the feed flow of electrolyte system, to give the processing district feed flow.
8, array deep hole electrolysis unit according to claim 7 is characterized in that: the feed flow part of the electrolyte system of narrating forms airtight cavity with described module frame (4), and this airtight cavity is feed flow chamber (6).
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| CN200810022329A CN100593446C (en) | 2008-07-09 | 2008-07-09 | Electrolytic machining method and apparatus for array deep hole |
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| CN200810022329A CN100593446C (en) | 2008-07-09 | 2008-07-09 | Electrolytic machining method and apparatus for array deep hole |
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| CN101890545A (en) * | 2010-07-14 | 2010-11-24 | 哈尔滨工业大学 | Online horizontal spark processing device of micro-electrode array and array hole based on electrostatic induction power supply |
| CN102179585A (en) * | 2011-05-20 | 2011-09-14 | 南京航空航天大学 | Capillary cathode-based small-conicity micro-hole electrochemical machining device and method |
| CN102357689A (en) * | 2011-09-13 | 2012-02-22 | 南京航空航天大学 | Electrochemical machining array electrode |
| CN104227157A (en) * | 2014-08-01 | 2014-12-24 | 广东工业大学 | Multi-potential electrolytic processing method |
| CN104384635A (en) * | 2014-09-16 | 2015-03-04 | 沈阳飞机工业（集团）有限公司 | Processing method of grid holes in multi-dimension curved surface |
| CN104625264A (en) * | 2013-11-06 | 2015-05-20 | 富泰华精密电子（郑州）有限公司 | Electrolytic machining device |
| CN104625260A (en) * | 2013-11-06 | 2015-05-20 | 富泰华精密电子（郑州）有限公司 | Electrolytic machining device |
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| CN104439575B (en) * | 2013-09-24 | 2017-01-04 | 富泰华精密电子（郑州）有限公司 | Electrolyzed Processing control system and control method thereof |
| CN107626997A (en) * | 2017-09-27 | 2018-01-26 | 西安工业大学 | The spiral narrow slot Electrolyzed Processing negative electrode of the complex-curved big depth-to-width ratio of outline |
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| CN110064805A (en) * | 2019-05-31 | 2019-07-30 | 常州工学院 | A kind of Electrolyzed Processing electrolyte flows array group hole cathode and preparation method thereof |
| CN111299726A (en) * | 2020-03-30 | 2020-06-19 | 淮阴工学院 | High-efficiency electric spark machining device for irregular array holes on surface of revolving body |
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| CN113146066A (en) * | 2021-04-09 | 2021-07-23 | 江苏大学 | Laser electrolysis back collaborative group hole punching method and system |
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- 2008-07-09 CN CN200810022329A patent/CN100593446C/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101890545A (en) * | 2010-07-14 | 2010-11-24 | 哈尔滨工业大学 | Online horizontal spark processing device of micro-electrode array and array hole based on electrostatic induction power supply |
| CN102179585A (en) * | 2011-05-20 | 2011-09-14 | 南京航空航天大学 | Capillary cathode-based small-conicity micro-hole electrochemical machining device and method |
| CN102179585B (en) * | 2011-05-20 | 2012-12-12 | 南京航空航天大学 | Capillary cathode-based small-conicity micro-hole electrochemical machining device and method |
| CN102357689A (en) * | 2011-09-13 | 2012-02-22 | 南京航空航天大学 | Electrochemical machining array electrode |
| CN104439575B (en) * | 2013-09-24 | 2017-01-04 | 富泰华精密电子（郑州）有限公司 | Electrolyzed Processing control system and control method thereof |
| CN104625264B (en) * | 2013-11-06 | 2017-04-26 | 富泰华精密电子（郑州）有限公司 | Electrolytic machining device |
| CN104625264A (en) * | 2013-11-06 | 2015-05-20 | 富泰华精密电子（郑州）有限公司 | Electrolytic machining device |
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| CN113146066A (en) * | 2021-04-09 | 2021-07-23 | 江苏大学 | Laser electrolysis back collaborative group hole punching method and system |
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