CN204018900U - A kind of liquid enhanced spark machined Porous electrode clamping device that rushes - Google Patents
A kind of liquid enhanced spark machined Porous electrode clamping device that rushes Download PDFInfo
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- CN204018900U CN204018900U CN201420256689.XU CN201420256689U CN204018900U CN 204018900 U CN204018900 U CN 204018900U CN 201420256689 U CN201420256689 U CN 201420256689U CN 204018900 U CN204018900 U CN 204018900U
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Abstract
A kind of liquid enhanced spark machined Porous electrode clamping device that rushes, comprise: electrode holder interface, electrode holder are concrete, Porous electrode, rigidity packing ring, 120 ° of locating rings, rigidity baffle ring, elastic sealing ring, holding screw and hold-down nuts, wherein: what electrode holder was concrete is connected with electrode holder interface thread without interior step end, electrode holder is specifically threaded with hold-down nut containing interior step end; By electrode connect successively rigidity packing ring, 120 ° of locating rings, rigidity baffle ring and elastic sealing rings; By the holding screw on hold-down nut, 120 ° of locating rings are applied to radial load electrode body is located, then the realization that is threaded of and hold-down nut concrete by electrode holder is to the vertical clamping of electrode, to rigidity baffle ring and the compression that contacts to elastic sealing ring.The utility model can be realized easily, practically and reliably Porous electrode is clamped, and this device can compatible realization reliably force the stable spark machined of rushing Porous electrode under liquid.
Description
Technical field
The utility model relates to the device in a kind of spark erosion technique field, specifically a kind of liquid enhanced spark machined Porous electrode clamping device that rushes.
Background technology
Spark machined is a kind of novel processing method that is different from conventional machining process, it is to carry out ablation excess metal based on galvano-cautery phenomenon during pulse feature spark discharge between instrument and workpiece (positive and negative electrode), to reach the processing method of part preliminary dimension, shape and surface quality, there is macroscopical active force little, the features such as noncontact processing, are particularly suitable for the processing of difficult-to-machine material and complicated shape part.Thereby spark machined is widely used in the manufacture of mould, medicine equipment, automobile component, aerospace equipment and energy device etc.The workpiece with complex profile adopts shaped electrode to process conventionally, the electrode that existing sinker electric discharge machining method is used has following deficiency: 1, when the workpiece of manufacturing complex shapes, corresponding shaped electrode shape is also very complicated, the batch machining that is unfavorable for like this shaped electrode is made, manufacturing process is consuming time many, required process equipment is expensive, and processing staff's technological level is also had higher requirements; 2, in electrode fabrication process, need to remove quite a few material, and export license just necessary replacing to a certain extent, recycling rate of waterused is low, wastes resource and the energy, does not meet the trend of green manufacturing; 3, need to make a plurality of electrodes during processing and forming for changing, because the cost of manufacture of each electrode is high, cause electrode cost to account for half left and right of whole processing charges; When 4, shaped electrode area increases, interelectrode parasitic capacitance also increases, and each pulse discharging energy is increased, and has reduced the quality of finished surface; 5, the working solution of traditional spark machined can only enter machining area from the side gap of electrode, need to select applicable machining gap and parameter even needs often have the action of lifting electrode to be beneficial to chip removal, reduce working (machining) efficiency.When shaped electrode area increases in addition, working solution mobility is bad, and galvanic corrosion product is not easy to be taken out of by working solution by the machining gap between tool-electrode and workpiece, easily increases short circuit, reduces working (machining) efficiency and workpiece surface quality.
These deficiencies of the prior art and defect fully show, reduce the Production Time of spark-erosion sinking machined electrode, reduce shaping electrode fabrication cost and difficulty, realize the mass production of shaping machined electrode, improve the utilization rate of electrode material, improve the market competitiveness that working (machining) efficiency and speed can improve spark machined greatly, more meet the trend of current green manufacturing.
For this reason, can adopt a kind of Porous electrode electric discharge machining method.Its core is interior liquid spark machined Porous shaping jig electrode to be a kind of porous material that is thick with hole.In the inside of this porous material, the shared ratio of through hole should be far above closed pore and blind hole, thereby makes smooth and easy flowing in runner that working fluid can form at through hole.When carrying out electrical spark working man-hour, by pass into the working fluid of certain flow in electrode one end, can make to rush each position that liquid puts on machining area, thereby process in a kind of mode of rushing liquid in bundling electrode porous that is similar to, improve the efficiency of spark machined.The preparation of this tool-electrode can reduce electrode fabrication time and the cost of spark-erosion sinking processing in batches, realizes the mass production of shaping machined electrode, improves the utilization rate of electrode material, improves working (machining) efficiency and speed.
But at present detailed tool-electrode clamping device is not being proposed aspect Porous electrode electric discharge machining method, only by simple, by electrode holder interface, rush liquid entrance, clamp body, chuck, the electrode holder that sealing ring forms, cannot solve the problems such as the radial location of electrode body and constraint, when electrode adds and can not ensure man-hour and workpiece to be machined plumbness in electric discharge, the consequence of bringing like this causes machining accuracy low exactly, make the waste of material and affect electrode and rush liquid effect in process, further affect its processing characteristics, and can this adopt Porous electrode to stablize just, quick spark machined also obtains the assurance that it improves the advantages such as working (machining) efficiency and speed in process.
Summary of the invention
The utility model is for above-mentioned deficiency, a kind of liquid enhanced spark machined Porous electrode clamping device that rushes is provided, can realize easily, practically and reliably Porous electrode is clamped and located, and this device can compatiblely be realized the stable spark machined of reliably forcing the Porous electrode rushing under liquid.
The utility model is achieved through the following technical solutions:
The utility model comprises: electrode holder interface, electrode holder are concrete, rigidity packing ring, Porous electrode, 120 ° of locating rings, rigidity baffle ring, elastic sealing ring, holding screw and hold-down nuts.Wherein: what electrode holder was concrete is connected with electrode holder interface thread without interior step end, electrode holder is specifically threaded with hold-down nut containing interior step end, by rigidity packing ring that electrode is connected successively, 120 ° of locating rings, rigidity baffle ring and elastic sealing rings, by the holding screw on hold-down nut, 120 ° of locating rings are applied radial load to electrode body location and clamped, and hold-down nut concrete by electrode holder is equipped with screw thread and realizes the vertical clamping to electrode again, to rigidity baffle ring and the compression that contacts to elastic sealing ring.
The inner side of described electrode holder interface is provided with hollow flushing hole to be pressed into working solution, realize and force reliably the interior liquid that rushes in process, one end, outside of electrode holder interface is provided with helicitic texture with one end without interior step of connecting electrode clamp body, the interlude of electrode holder interface is outer-hexagonal structure, be convenient to spanner to the screwing of electrode holder interface, the outside other end of electrode holder interface is provided with the connecting interface matching with machine tool chief axis.
Described electrode holder concrete 2 has an inverted "L" shaped step with inner side, externally threaded one end, with fixedly rigidity packing ring the compression Porous shaped electrode that matches with hold-down nut by external screw thread.Inner side, the concrete one end without " L " shape step of electrode holder is provided with the internal thread interface matching with electrode holder interface, and the external side of electrode holder is provided with external thread structure to be connected and fixed nut with fixed electrode.In the middle of the concrete outside of described electrode holder for hexgonal structure so that spanner to concrete the screwing and control to electrode body pressure size of electrode holder.
Described rigidity packing ring is the rigidity annulus of a hollow annular structure, its outer ring and electrode holder specifically match with one end of " L " shape, be nested in electrode holder concrete in, the size of its height can be adjusted according to the thickness of the "T"-shaped head of electrode, guarantees that electrode holder specifically and between electrode has enough thrusts.
120 ° of described its quantity of locating ring are totally three outsides that are evenly distributed on electrode " T " head, the pit that has a circle in the middle of its outside, by three holding screws on hold-down nut, withstand the radial clamping power that pit provides 120 ° of locating rings, electrode body is retrained.
Its quantity of described holding screw is three, is evenly distributed on hold-down nut, by holding screw, realizes the axial location of electrode body and axial clamping force, so that the constraint of electrode body to be provided.
Described rigidity baffle ring is hollow annular structure, and the machining profile of its inner side profile and Porous electrode matches, and its lateral profile is that circular configuration and size are larger than the openend of hold-down nut.
Described elastic seal ring is hollow annular structure, and the machining profile of its inner side profile and Porous electrode matches, and its lateral profile is circular.
Described electrode body is to adopt the larger metallic particles of diameter, relies on the mode of high temperature sintering, prepares fast the electrode with complex three-dimensional structure.
The radial section profile of described electrode is a kind of in circle, quadrangle, I-shaped, cross, T shape, L shaped or Z-shaped profile.
Described hold-down nut openend is provided with blocking surface to realize the axial limiting to rigidity baffle ring, in the relative side of openend, be provided with the female thread structure that specifically matches with electrode holder to realize the compression to electrode body, and compression O-Sealing Rings is realized the sealing to working solution, in its not tapped thickened wall, be evenly distributed with the minor thread hole of three formed objects, with fixedly holding screw sealing.The outer upper ends of described hold-down nut is that hexgonal structure is so that spanner screwing hold-down nut.
Technique effect of the present utility model comprises: according to "T"-shaped electrode body, built three holding screws that distribute uniformly by hold-down nut around, holding screw offers 120 ° of locating ring radial constraints, the circulus that locating ring is 120 ° both can fixed electrode body move radially, simultaneously also can be so that the radial location of electrode body energy, this member can guarantee that "T"-shaped electrode head thickness is enough thin, and then can guarantee not affect electrode body rush liquid effect, avoided electrode body oversize and affect it and rush liquid in fixture; Because so the "T"-shaped head of electrode body has adopted more simply, clamping mode easily and efficiently, i.e. and axial compression that hold-down nut provide concrete by electrode holder; Elastic sealing ring has guaranteed under liquid condition, to carry out Porous electrical spark working man-hour rushing by force, in processing, can obtain and rush reliably liquid effect, thereby realized the effect that performance Porous electrode three-dimensional is rushed liquid, as strengthened the advantages such as gap chip removal ability, intensifier electrode cooling capacity.
Accompanying drawing explanation
Fig. 1 is the utility model schematic perspective view.
Fig. 2 is structure cutaway view of the present utility model.
Fig. 3 is the utility model assembling schematic diagram.
Fig. 4 is hexagonal end face Porous electrode and rigidity back-up ring schematic diagram
Fig. 5 is circular end surface Porous electrode and rigidity back-up ring schematic diagram
The specific embodiment
Below embodiment of the present utility model is elaborated, the present embodiment is to implement under prerequisite in technical solutions of the utility model, provided detailed embodiment and specific operation process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 1 to Figure 3, the present embodiment comprises: electrode holder interface 1, electrode holder concrete 2, rigidity packing ring 3, Porous electrode 8, 120 ° of locating rings 4, rigidity baffle ring 6, elastic sealing ring 7, holding screw 5 and hold-down nut 9, wherein: being threaded with electrode holder interface 1 without interior step end of electrode holder concrete 2, electrode holder concrete 2 is threaded with hold-down nut 9 containing interior step end, by rigidity packing ring 3 that electrode is connected successively, 120 ° of locating rings 4, rigidity baffle ring 6 and elastic sealing ring 7, by 5 pairs of 120 ° of locating rings of the holding screw on hold-down nut 9, apply radial load to electrode body location and clamp, by electrode holder concrete 2 and hold-down nut 9, be equipped with screw thread again and realize the axial grip to electrode, to rigidity baffle ring 6 and the compression that contacts to elastic sealing ring 7.
The inner side of described electrode holder interface 1 is provided with hollow flushing hole, lathe rushes liquid system can be pressed into Porous electrode by working solution by this flushing hole, realize and force reliably the interior liquid that rushes in process, one end, outside of electrode holder interface 1 is provided with helicitic texture with one end without interior step of connecting electrode clamp body 2, the interlude of electrode holder interface 1 is outer-hexagonal structure, be convenient to spanner screwing electrode holder interface, the outside other end of electrode holder interface 1 is provided with the connecting interface matching with machine tool chief axis, its architectural feature is determined by the interface characteristics of machine tool chief axis.
Described electrode holder concrete 2 has an inverted "L" shaped step with inner side, externally threaded one end, with fixedly rigidity packing ring 3 the compression Porous shaped electrode body 8 that matches with hold-down nut 9 by external screw thread.Electrode holder concrete 2 inner sides, the one end without " L " shape step are provided with the internal thread interface matching with electrode holder interface 1, and concrete 2 outsides of electrode holder are provided with external thread structure to link hold-down nut 9 with fixed electrode.In the middle of the outside of described electrode holder concrete 2 for hexgonal structure so that spanner screwing and control to electrode body 8 pressure sizes electrode holder concrete 2.
Described rigidity packing ring 3 is the rigidity annulus of a hollow annular structure, its outer ring and electrode holder concrete 2 one end with inverted "L" shaped match, be nested in electrode holder concrete 2, the size of its height can be adjusted according to the thickness of the "T"-shaped head of electrode, and guaranteeing has enough thrusts between electrode holder concrete 2 and electrode body 8.
Described 120 ° of locating rings, 4 its quantity are totally three outsides that are evenly distributed on the "T"-shaped head of electrode, the pit that has a circle in the middle of its outside, by three holding screws 5 on hold-down nut 9, withstand the radial clamping power that pit provides 120 ° of locating rings 4, electrode body 8 is retrained.
Described holding screw 5 its quantity are three, are evenly distributed on hold-down nut 9, realize the axial location of electrode body 8 and axial clamping force, so that the constraint of electrode body 8 to be provided by holding screw 5.
Described rigidity baffle ring 6 is hollow annular structure, and the machining profile of its inner side profile and Porous electrode matches, and its lateral profile is that circular configuration and size are larger than the openend of hold-down nut.
The material that described elastic seal ring 7 has elastic packing performance by rubber or nylon etc. is made, and has hollow annular structure, and the machining profile of its inner side profile and Porous electrode matches, and its lateral profile is circular.
Described electrode body 8 is to adopt the larger metallic particles of diameter, relies on the mode of high temperature sintering, prepares fast the electrode with complex three-dimensional structure.
The radial section profile of described electrode body 8 is a kind of in circle, quadrangle, I-shaped, cross, T shape, L shaped or Z-shaped profile.
Described hold-down nut 9 openends are provided with blocking surface to realize the axial limiting to rigidity baffle ring, in the relative side of openend, be provided with the female thread structure that matches with electrode holder concrete 2 to realize the compression to electrode body 8, and compress the sealing that round and elastic sealing ring 7 is realized working solution, in its not tapped thickened wall, be evenly distributed with the minor thread hole of three formed objects, with fixedly holding screw 5 sealing.The outer upper ends of described hold-down nut 9 is that hexgonal structure is so that spanner screwing hold-down nut.
Porous electrode is to be formed through high temperature sintering by a large amount of larger-diameter metallic particles, hole between its particle and particle can guarantee that the large flow of Porous electrode in electric discharge machining process rushes liquid and guarantee its stable discharging processing, because the length of electrode body itself can affect size and the effect of rushing liquid, so electrode body should be short as much as possible by the part of fixture clamping, and guarantee that rushing liquid is not subject to large impact, so adopt "T"-shaped electrode tip fixed electrode.In order to make electrode body 8 obtain constraint radially, so adopt 120 ° of locating rings 4 to realize radial location and the constraint of electrode body 8.Moreover the "T"-shaped head of electrode body 8 is constant, its head is to formulate according to the diversity of processing cavity profile below.The profile that electrode body is single cannot meet actual processing needs, in order to adapt to the diversity of processing cavity profile, installed rigidity baffle ring 6, the interior profile of the die cavity profile design rigidity baffle ring 6 that can process according to actual needs, is used this baffle ring to carry out electrode body 8 axial spacing and fixing.
The embodiment of this device is as follows:
First electrode body 8 is connected on rigidity baffle ring 6 successively, in the openend of elastic sealing ring 7 and hold-down nut 9, then by precession hold-down nut 95 pairs of 120 ° of locating rings that contact with electrode body 8 of holding screw 4 extruding contact, thereby realize the radial constraint of electrode body 8 and fix, moreover rigidity packing ring 3 is placed on to the "T"-shaped head of electrode body 8, now again in the concrete 2 precession hold-down nuts 9 of electrode holder, the upper edge of rigidity packing ring 3 is contacted on the inverted "L" shaped step of electrode holder concrete 2, simultaneously electrode holder concrete 2 and hold-down nut 9 provide axial pressing force by rigidity packing ring 3 for 8 "T"-shaped upper ends of electrode body, and the containment surfaces of hold-down nut 9 by its open end place rigidity baffle ring 6 provides axial pressing force to the lower end of the "T"-shaped head of electrode body 8, thereby realize the whole axial constraint of electrode body 8, and by rigidity baffle ring 6, compress elastic sealing rings 7 and realize forcing the sealing of the working solution while rushing liquid.Electrode holder concrete 2 is threaded with electrode holder interface 1 containing one end of female thread structure, electrode holder 1 rushes liquid system with machine tool chief axis and lathe and is connected, when realizing Porous electrode location, lathe rushes liquid system can be pressed into Porous electrode by working solution by the endoporus of electrode holder interface 1, realizes the interior liquid that rushes that forces in process.The size and shape of the electrode that die cavity profile that wherein the inner side profile of the size of the height of rigidity packing ring 3,120 ° of locating rings and rigidity baffle ring 6, elastic packing 7 can be processed is according to actual needs required designs.
Claims (9)
1. one kind is rushed liquid enhanced spark machined Porous electrode clamping device, comprise: electrode holder interface, electrode holder is concrete, rigidity packing ring, Porous electrode, 120 ° of locating rings, rigidity baffle ring, elastic sealing ring, holding screw and hold-down nut, wherein: what electrode holder was concrete is connected with electrode holder interface thread without interior step end, electrode holder is specifically threaded with hold-down nut containing interior step end, the interlude of described electrode holder interface is outer-hexagonal structure, by rigidity packing ring that electrode is connected successively, 120 ° of locating rings, rigidity baffle ring and elastic sealing ring, concrete and the hold-down nut of described electrode holder is equipped with screw thread realization to the vertical clamping of electrode, to rigidity baffle ring and contacting compression, withstand 120 ° of locating rings come radial location to fix by the holding screw on hold-down nut elastic sealing ring, the inner side of described electrode holder interface is provided with hollow hole to be pressed into working solution, one end, outside of electrode holder interface be provided with helicitic texture with connecting electrode clamp body without interior step end, the outside other end of electrode holder interface is provided with the connecting interface matching with machine tool chief axis.
2. the liquid enhanced spark machined Porous electrode clamping device that rushes according to claim 1, it is characterized in that: described electrode holder specifically has one to fall " recessed " shape step with inner side, externally threaded one end, with fixedly rigidity packing ring the compression Porous shaped electrode that matches with hold-down nut by external screw thread; Inner side, the concrete one end without " recessed " shape step of electrode holder is provided with the internal thread interface matching with electrode holder interface, and the external side of electrode holder is provided with the hold-down nut that external thread structure is used to be connected and fixed electrode; In the middle of the concrete outside of described electrode holder for hexgonal structure so that spanner to concrete the screwing and control to electrode body pressure size of electrode holder.
3. the liquid enhanced spark machined Porous electrode clamping device that rushes according to claim 1 and 2, it is characterized in that: described Porous electrode is the mode that adopts the metallic particles dependence high temperature sintering that diameter is larger, prepare fast the Porous electrode of three-dimensional structure, the part being held is "T"-shaped head, but its radial section profile that participates in electric discharge processing part can be a kind of in circle, quadrangle, I-shaped, cross, T shape, L shaped or Z-shaped profile.
4. the liquid enhanced spark machined Porous electrode clamping device that rushes according to claim 1 and 2, it is characterized in that: described rigidity packing ring is the rigidity annulus of a hollow annular structure, its outer ring and electrode holder specifically match with one end of " recessed " shape, be nested in electrode holder concrete in, the size of its height can be adjusted according to the thickness of the "T"-shaped head of electrode, guarantees that electrode holder specifically and between electrode has enough thrusts.
5. the liquid enhanced spark machined Porous electrode clamping device that rushes according to claim 1 and 2, it is characterized in that: 120 ° of described its quantity of locating ring are totally three outsides that are evenly distributed on electrode " T " head, in the middle of its outside, there is a circular pit, by three holding screws on hold-down nut, withstand the radial clamping power that pit provides 120 ° of locating rings, electrode body is located and radial constraint.
6. the liquid enhanced spark machined Porous electrode clamping device that rushes according to claim 1 and 2, it is characterized in that: its quantity of described holding screw is three, be evenly distributed on hold-down nut, by holding screw, realize the axial location of electrode body and axial clamping force, so that radial location and the constraint of electrode body to be provided.
7. the liquid enhanced spark machined Porous electrode clamping device that rushes according to claim 1 and 2, it is characterized in that: described rigidity baffle ring is hollow annular structure, the machining profile of its inner side profile and Porous electrode matches, and its lateral profile is that circular configuration and size are larger than the openend of hold-down nut.
8. the liquid enhanced spark machined Porous electrode clamping device that rushes according to claim 1 and 2, it is characterized in that: described elastic seal ring is hollow annular structure, the machining profile of its inner side profile and Porous electrode matches, and its lateral profile is circular.
9. the liquid enhanced spark machined Porous electrode clamping device that rushes according to claim 1 and 2, it is characterized in that: described hold-down nut openend is provided with blocking surface to realize the axial limiting to rigidity baffle ring, in the relative side of openend, be provided with the female thread structure that specifically matches with electrode holder to realize being fixed electrode body, and compression O-Sealing Rings is realized the sealing to working solution, in its not tapped thickened wall, be evenly distributed with the minor thread hole of three formed objects, to connect holding screw sealing; The outer upper ends of described hold-down nut is that hexgonal structure is so that spanner screwing hold-down nut.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420256689.XU CN204018900U (en) | 2014-05-20 | 2014-05-20 | A kind of liquid enhanced spark machined Porous electrode clamping device that rushes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420256689.XU CN204018900U (en) | 2014-05-20 | 2014-05-20 | A kind of liquid enhanced spark machined Porous electrode clamping device that rushes |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934529A (en) * | 2014-05-20 | 2014-07-23 | 江南大学 | Liquid flushing enhanced porous electrode clamping device for electric spark machining |
| CN106270862A (en) * | 2016-10-19 | 2017-01-04 | 大连大学 | A kind of electrode clamping device |
| CN106312206A (en) * | 2016-09-29 | 2017-01-11 | 河南理工大学 | Electrolytic machining device and method for movable mask |
| CN109648163A (en) * | 2018-10-22 | 2019-04-19 | 南京航空航天大学 | Novel bundling electrode rotating device for multi-channel discharge ablation |
| CN110026631A (en) * | 2019-05-10 | 2019-07-19 | 哈尔滨理工大学 | A kind of the main shaft executive device and processing method of electrical discharge machining hexagonal hole |
| CN110640243A (en) * | 2018-06-26 | 2020-01-03 | 南京航空航天大学 | Cluster electrode rotating and clamping device for multi-channel discharge ablation milling |
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2014
- 2014-05-20 CN CN201420256689.XU patent/CN204018900U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934529A (en) * | 2014-05-20 | 2014-07-23 | 江南大学 | Liquid flushing enhanced porous electrode clamping device for electric spark machining |
| CN106312206A (en) * | 2016-09-29 | 2017-01-11 | 河南理工大学 | Electrolytic machining device and method for movable mask |
| CN106312206B (en) * | 2016-09-29 | 2018-05-25 | 河南理工大学 | A kind of activity mask electrolytic machining device and method |
| CN106270862A (en) * | 2016-10-19 | 2017-01-04 | 大连大学 | A kind of electrode clamping device |
| CN106270862B (en) * | 2016-10-19 | 2018-03-16 | 大连大学 | A kind of electrode clamping device |
| CN110640243A (en) * | 2018-06-26 | 2020-01-03 | 南京航空航天大学 | Cluster electrode rotating and clamping device for multi-channel discharge ablation milling |
| CN109648163A (en) * | 2018-10-22 | 2019-04-19 | 南京航空航天大学 | Novel bundling electrode rotating device for multi-channel discharge ablation |
| CN110026631A (en) * | 2019-05-10 | 2019-07-19 | 哈尔滨理工大学 | A kind of the main shaft executive device and processing method of electrical discharge machining hexagonal hole |
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Granted publication date: 20141217 Termination date: 20150520 |
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