CN201091948Y - Self-guided composite material tube electrode and electric spark deep eyelet processing device thereof - Google Patents
Self-guided composite material tube electrode and electric spark deep eyelet processing device thereof Download PDFInfo
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- CN201091948Y CN201091948Y CNU2007200586511U CN200720058651U CN201091948Y CN 201091948 Y CN201091948 Y CN 201091948Y CN U2007200586511 U CNU2007200586511 U CN U2007200586511U CN 200720058651 U CN200720058651 U CN 200720058651U CN 201091948 Y CN201091948 Y CN 201091948Y
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Abstract
The utility model discloses a self-guide composite material pipe electrode and the electric spark deep small hole processing device; the device comprises a servo feeding mainshaft, a workpiece chuck, a self-guide composite material pipe electrode, a pipe electrode installation base, a workbench and an external guider; the servo feeding mainshaft is connected with the workpiece chuck which centers and clamps the workpice; the connecting plate of the external guider is fixed on the workpiece by a screw; the external guider installation base is fixedly connected with the connecting plate of the external guider by a screw and a bearing sleeve; the external guider and the external guider installation base are positioned and self-locked by a conical surface; the pipe electrode installation base is fixed on the workbench by a pressing plate; the self-guide composite material pipe electrode is fixed on the pipe electrode installation base by an elastic centering chuck; the trough of the pipe electrode installation base is internally provided with an O-shaped sealing ring. The device can solve the problems of poor debris drainage, poor heat dissipation and poor stability and difficult guiding, etc. in the processing of an ultra-deep small hole, and realizes the processing of ultra-deep small holes.
Description
Technical field
The utility model belongs to mechanical engineering spark erosion technique field, and is particularly a kind of from leading composite material tube electrode and Deep-Small Hole Drilling by EDM device thereof.
Background technology
Although the aperture method for processing has a lot, as Laser Processing, Ultrasonic machining, high-pressure water jet processing, mechanical oscillation drilling, line electro-chemical machining (ECM), electric spark (EDM) and electric spark and electrolysis complex method.The smaller processing in footpath can achieve the goal above method substantially for routine dark (length), but but is difficult to realize for the situation of comparatively special material or king-sized aspect ratio.The majority of being reported all is to adopt electric discharge machining method both at home and abroad, cooperate the return bend electrode of pressure working solution and external orientation to realize, but, all there is the problem of following general character: enlarge, present tapering, machining hole axis bending, process instability as the aperture and maybe can't continue etc. for the especially big extreme case of aspect ratio.
As, the patent No. is that the cross section that utility model patent that " 98225298.6 ", name are called " novel high speed Deep-Small Hole Drilling by EDM electrode " discloses electrode is non-circular (outside prismatic, inner circular aperture), makes electrode axis to forming the increase of drain chip removal space; Its weak point is work in-process, only adopt external orientation, during for little and dark hole of diameter and less pipe electrode (as d≤1mm, aspect ratio 〉=100 o'clock), can cause in the electrode hole cantilever long and rigidity is relatively poor, add top electrode revolution centrifugal action, must make the machining hole outlet diameter become big, form bigger taper error.Weak point is in its process implementing on the other hand, workpiece down, tool-electrode from, the formation in hole is carried out from top to bottom, when dark, spark machined product (residue, molten bits) is difficult for outside the evacuation aperture of bottom, hole in the hole.
It is 1mm that the combination process that Britain Edinburgh university adopts electric spark to combine with electrolysis has processed diameter, the degree of depth reaches the super dark aperture of 1000mm, though technical merit is very high, but because its technology and equipment complexity, relate to two kinds of equipment of electric discharge machine and electrolytic machining set, electrolyte is difficult to practicality and puts into production the subsequent affect and the high processing requirement of workpiece.
Summary of the invention
At above-mentioned the deficiencies in the prior art part, primary and foremost purpose of the present utility model is to provide the irrelevant electric spark of a kind of guiding, stability and working depth from leading the composite material tube electrode.Adopt this electrode can solve the problems such as row's detritus, heat radiation, poor stability and guidance difficulties that exist in super large aspect ratio aperture (the super dark aperture) processing, realize the processing of super dark aperture.
Another purpose of the present utility model is to provide the Deep-Small Hole Drilling by EDM device that the above-mentioned composite material tube electrode that leads certainly is housed.
The purpose of this utility model realizes by following technical proposals: a kind of from leading the composite material tube electrode, comprise copper pipe (8) and three-pawl type fluting rubber layer (11), described electric spark is copper pipe (8) from the inside of the composite material tube electrode that leads, on copper pipe (8), be provided with three-pawl type fluting rubber layer (11), described three-pawl type fluting rubber layer (11) is the hock of equally distributed three slat gum materials, be 120 ° between hock and evenly distribute, three dead slots are arranged between hock.
In order to realize the utility model better, described copper pipe is brass tube or copper tube etc., and described dead slot is straight shape groove or spiral slot; Described spiral slot is uniform being wrapped on the copper pipe of hock spiral of three slat gum materials.
Above-mentioned Deep-Small Hole Drilling by EDM device from the composite material tube electrode that leads is housed, comprise servo feed main shaft (1), Workpiece clamping head (2), from guiding composite material tube electrode, pipe electrode mount pad (5), workbench (6) and external orientation device (9), described servo feed main shaft (1) is connected with Workpiece clamping head (2), Workpiece clamping head (2) is with workpiece (10) centering and clamping, external orientation device joint cover (3) is fixed on the workpiece (10) by screw, external orientation device mount pad (4) is connected with external orientation device joint cover (3), and external orientation device (9) is located and self-locking by the conical surface with external orientation device mount pad (4); Described pipe electrode mount pad (5) is fixed on the workbench (6) by pressing plate, be fixed on the pipe electrode mount pad (5) by the elastic centering chuck from guiding composite material tube electrode, be provided with O RunddichtringO (7) in the groove of pipe electrode mount pad (5), by O RunddichtringO (7) sealing load working solution.
Described external orientation device mount pad (4) is fixedlyed connected with external orientation device joint cover (3) by bearing holder (housing, cover) (12).Described external orientation device (9) adopts nylon material.
The utlity model has following characteristics:
1. the utility model is based on spark erosion technique, employing only depends on a kind of simple technology of electric spark and equipment, realize the processing of super dark aperture from the composite material tube electrode that leads by the electric spark of the utility model preparation, cooperate external orientation device guiding, reach the dual guiding of the inner realization of machining hole.Reach the inner guiding of machining hole, location and stable by the composite material tube electrode that leads certainly, realize the processing of super dark aperture.The external orientation utensil has absorbing and guiding double action; Stable, absorbing effect that inner rubber has.Do not do gyration from guiding composite material tube electrode and workpiece, only do axial servo feed relative motion with the spark-erosion machine tool spindle unit from the composite material tube electrode that leads.Adopt this pipe electrode will have more flexibility, versatility and raise the efficiency and quality.
2. to adopt " workpiece is inverted and is installed " be that workpiece is in last and the downward feeding with servo feed mechanism, the composite material tube electrode that leads is descending on the static installment work platform anchor clamps certainly to the utility model, suitably working solution is easy to flow out from the processing district, takes away detritus, slag and heat.Not only solve a super dark aperture processing difficult problem, more can be effectively applied to other dark aperture processing, improve machining accuracy and efficient.
3. the utility model on the one hand, has solved electric spark working solution (deionized water) the flow field problem overlength capillary in of pressure greater than 5MPa from leading the composite material tube electrode, and promptly working solution enters the problem of processing district; On the other hand, make processing district working solution and electric spark hot melt detritus be easy to from the gap of the pipe electrode outside and machining hole formation, get rid of.
4. external orientation device and workpiece servo-actuated, the kinematic error between having avoided between each activity of machine tool, centrifugal force is not turned round, avoids turning round in pipe electrode or processing makes electrode become curved and vibration occurs.
5. mesohigh liquid-supplying system independently, pressure can increase with the increase of working depth, the loss of compensation work liquid flow process.
The utility model compared with prior art has following advantage and beneficial effect:
(1) the composite material tube electrode that leads certainly is made of copper pipe and three-pawl type fluting rubber layer, rubber layer can be wedged among the machining gap, make copper pipe accurately to feel relieved, and in feed motion, play guide effect, dead slot is as processing district medium and the logical loop of slag row between hock, and solve the tiny pipe electrode of external orientation increases and the problem of rigidity deficiency with working depth at all.
(2) inner guiding must be used in combination with external orientation.As long as the sufficiently long composite material tube electrode that leads certainly can be provided, working depth is restricted hardly, and this is the successful part from the pipe electrode that leads, and still along with the increase of the degree of depth, it is difficult that the renewal of medium becomes gradually, and objective requirement increases the pressure medium value.
(3) the utility model adopts " workpiece is inverted and is installed " mode.This mode makes the big radiating effect of deionized water thermal capacity better, and flow resistance is little, helps upgrading in time and circulating filtration of dark aperture machining medium.
(4) electrode assembly of the present utility model can be stablized and processes, and diameter is less than 1mm, and the degree of depth surpasses the dark aperture of 1000mm, and draw ratio surpasses 1000, and when working depth was big, liquid supply pressure needed to increase.
Description of drawings
Fig. 1 is a Deep-Small Hole Drilling by EDM device schematic diagram.
Fig. 2 is from leading composite material tube electrode structure schematic diagram.
Fig. 3 is the A-A enlarged drawing of Fig. 2.
Fig. 4 is general spark-erosion machine tool aperture extension program schematic diagram.
Fig. 5 is that the self-conductance of spirality slot type is to composite pipe electrode figure.
Wherein: 1-servo feed main shaft; The 2-Workpiece clamping head; 3-external orientation device joint cover; 4-external orientation device mount pad; 5-pipe electrode mount pad; The 6-workbench; The 7-O RunddichtringO; The 8-copper pipe; 9-external orientation device; The 10-workpiece; 11-three-pawl type fluting rubber layer; The 12-bearing holder (housing, cover); 32-Z type aperture is extended support; The original chuck of 13-lathe; Work aperture (1300mm) after a-extends; The original aperture of b-lathe (300mm).
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
As Fig. 2, shown in Figure 3, a kind of composite material tube electrode that leads certainly comprises multiple tube electrode brass tube 8 and three-pawl type fluting rubber layer 11, electric spark is a brass tube 8 from the inside of the composite material tube electrode that leads, on the brass tube 8 of composite pipe electrode, be provided with three-pawl type fluting rubber layer 11, three-pawl type fluting rubber layer 11 is the hock of equally distributed three slat gum materials, be 120 ° between hock and evenly distribute, three dead slots are arranged between hock, dead slot is straight shape groove.The hock radial thickness than the big 0.1～0.3mm of machining gap about.
As shown in Figure 1, above-mentioned Deep-Small Hole Drilling by EDM device from the composite material tube electrode that leads is housed, comprise servo feed main shaft 1, Workpiece clamping head 2, external orientation device joint cover 3, from guiding composite material tube electrode, external orientation device mount pad 4, pipe electrode mount pad 5, workbench 6 and external orientation device 9, servo feed main shaft 1 is connected with Workpiece clamping head 2, Workpiece clamping head 2 on the servo feed main shaft 1 is with workpiece 10 centering and clamping, external orientation device joint cover 3 is fixed on the workpiece 10 by screw, external orientation device mount pad 4 is fixing with external orientation device joint cover 3 by screw rod and bearing holder (housing, cover) 12, and external orientation device 9 (being outside nylon material guider 9) is located and self-locking by the conical surface with external orientation device mount pad 4.Pipe electrode mount pad 5 is fixed on the workbench 6 by pressing plate, be fixed on the pipe electrode mount pad 5 by the elastic centering chuck from guiding composite material tube electrode, be provided with O RunddichtringO 7 in the groove of pipe electrode mount pad 5, and by O RunddichtringO 7 sealing load working solutions; Hock outer round surface and outside nylon material guider 9 endoporus from guiding composite material tube electrode form matched in clearance.Add man-hour, servo feed main shaft 1, Workpiece clamping head 2, external orientation device joint cover 3, external orientation device mount pad 4, outside nylon material guider 9 are fixed in the assembly of one with servo feed (F) about servo feed main shaft 1 work, and outside nylon material guider 9 endoporus are to following actionless from leading composite material tube electrode guiding, after being worked into certain depth, three-pawl type fluting rubber layer 11 enters in the machining hole, realizes inner guiding and stabilization.The deionized water working solution enters pipe electrode mount pad 5 from the medium inlet, flow through from the endoporus of the composite material tube electrode that leads, enter spark discharge zone, termination, discharging condition is provided, take away elaboration products,, get back to work top from three dead slots outflows of three-pawl type fluting rubber layer 11, flow into to reclaim cooling bath, more after filtration, the mesohigh pumping system reenters the medium inlet and circulate.
Work in-process, three-pawl type fluting rubber layer 11 is with brass tube 8 feedings of composite pipe electrode, outer surface is subjected to certain compression is close to its outer surface and machining hole inner surface, make multiple tube electrode brass tube 8 be in machining hole center all the time, play 8 centering of multiple tube electrode brass tube, guiding and stabilization.Under the high temperature action of electric spark, three-pawl type fluting rubber layer 11 is melted into slag with multiple tube electrode brass tube 8 in the processing, passes through three downward following currents of dead slot together in company with the slag of workpiece 10, enters the medium circulation filtration system.As seen, the rigidity of this inner tube electrode guiding and working depth are irrelevant.Another effect of three-pawl type fluting rubber layer 11 is to eliminate vibration and the shake that media flow is brought in the composite pipe electrode brass tube 8, eliminates the possibility of two electric pole short circuits.Because brass tube 8 is very long, become curved for preventing the axial feed electrode, nylon material external orientation device 9 also is absolutely necessary.
As shown in Figure 4, most general spark-erosion machine tool apertures limited (200～400mm), can not be directly used in the dark aperture processing of super large aspect ratio, illustrated scheme can realize bigger aperture.Extend support 32 in the original chuck 13 clamping Z type apertures of lathe, the upper end of support 32 is place work piece chuck 2 again, the work aperture is made Z type aperture extension support 32 as required and just can have been guaranteed that Z type aperture is extended does not influence the original performance indications of lathe after support 32 is removed like this.The axis feeding haul distance can not change.
As shown in Figure 5, the self-conductance of spirality slot type is to composite pipe electrode figure.Be provided with three-pawl type fluting rubber layer 11 on copper pipe 8, three-pawl type fluting rubber layer 11 is the hock of equally distributed three slat gum materials, is 120 ° between hock and evenly distributes, and three dead slots are arranged between hock.Dead slot is i.e. uniform being wrapped on the copper pipe of hock spiral of three slat gum materials of spiral slot.Described copper pipe is a copper tube.
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (6)
1. one kind from the composite material tube electrode that leads, it is characterized in that: the described composite material tube electrode that leads certainly comprises copper pipe (8) and three-pawl type fluting rubber layer (11), described electric spark is copper pipe (8) from the inside of the composite material tube electrode that leads, on copper pipe (8), be provided with three-pawl type fluting rubber layer (11), described three-pawl type fluting rubber layer (11) is the hock of equally distributed three slat gum materials, be 120 ° between hock and evenly distribute, three dead slots are arranged between hock.
2. according to claim 1 a kind of from leading the composite material tube electrode, it is characterized in that: described copper pipe is brass tube or copper tube.
3. according to claim 1 a kind of from leading the composite material tube electrode, it is characterized in that: described dead slot is straight shape groove or spiral slot.
4. one kind is equipped with the described Deep-Small Hole Drilling by EDM device from the composite material tube electrode that leads of claim 1, it is characterized in that: described Deep-Small Hole Drilling by EDM device comprises servo feed main shaft (1), Workpiece clamping head (2), from guiding composite material tube electrode, pipe electrode mount pad (5), workbench (6) and external orientation device (9), described servo feed main shaft (1) is connected with Workpiece clamping head (2), Workpiece clamping head (2) is with workpiece (10) centering and clamping, external orientation device joint cover (3) is fixed on the workpiece (10) by screw, external orientation device mount pad (4) is connected with external orientation device joint cover (3), and external orientation device (9) is located and self-locking by the conical surface with external orientation device mount pad (4); Described pipe electrode mount pad (5) is fixed on the workbench (6) by pressing plate, and the composite material tube electrode that leads certainly is fixed on the pipe electrode mount pad (5) by the elastic centering chuck, is provided with O RunddichtringO (7) in the groove of pipe electrode mount pad (5).
5. Deep-Small Hole Drilling by EDM device according to claim 4 is characterized in that: described external orientation device mount pad (4) is fixedlyed connected with external orientation device joint cover (3) by bearing holder (housing, cover) (12).
6. Deep-Small Hole Drilling by EDM device according to claim 4 is characterized in that: described external orientation device (9) adopts nylon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200586511U CN201091948Y (en) | 2007-10-24 | 2007-10-24 | Self-guided composite material tube electrode and electric spark deep eyelet processing device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200586511U CN201091948Y (en) | 2007-10-24 | 2007-10-24 | Self-guided composite material tube electrode and electric spark deep eyelet processing device thereof |
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| CN201091948Y true CN201091948Y (en) | 2008-07-30 |
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| CNU2007200586511U Expired - Fee Related CN201091948Y (en) | 2007-10-24 | 2007-10-24 | Self-guided composite material tube electrode and electric spark deep eyelet processing device thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059417A (en) * | 2010-11-30 | 2011-05-18 | 广东轻工职业技术学院 | Electrode and machine tool dedicated for combined machining of electric spark shaping of inner round bore and elastic honing |
| CN102699460A (en) * | 2012-06-04 | 2012-10-03 | 清华大学 | Electrode guider and online fast switching method for insulation state of electrode side wall |
| CN103028796A (en) * | 2012-12-29 | 2013-04-10 | 苏州市职业大学 | Electrolytic grinding tool for processing incomplete hole |
| CN103252547A (en) * | 2013-05-17 | 2013-08-21 | 哈尔滨汽轮机厂有限责任公司 | Inward-flushing type electrode brush for electric spark machining |
| CN105478940A (en) * | 2015-09-02 | 2016-04-13 | 北京市电加工研究所 | Flexible transmission device for electrical discharge machining of internal curved holes |
| CN106112150A (en) * | 2010-12-02 | 2016-11-16 | 劳斯莱斯有限公司 | Electro-discharge machining |
| CN107378154A (en) * | 2017-07-18 | 2017-11-24 | 青岛科技大学 | A kind of Multifunction expanding tool-electrode for Electrolyzed Processing hole |
| EP2671660A3 (en) * | 2012-06-08 | 2018-01-03 | General Electric Company | Electrode and electrochemical machining process for forming non-circular holes |
| CN109382557A (en) * | 2017-08-10 | 2019-02-26 | 中北大学 | A kind of electric discharging machining electrode with helicla flute |
| CN110860747A (en) * | 2019-11-22 | 2020-03-06 | 中国航空制造技术研究院 | Electrode clamp for deep small hole electric spark forming machining and machining method |
| CN111215710A (en) * | 2020-02-24 | 2020-06-02 | 广东工业大学 | On-line repairable micro-discharge machining device and method for slotted electrode |
| CN112059343A (en) * | 2020-08-31 | 2020-12-11 | 西安工业大学 | Cathode tool for machining variable-diameter round hole in conductor material and machining method |
| CN113118573A (en) * | 2021-03-09 | 2021-07-16 | 广东工业大学 | Method and device for machining deep and narrow groove by electrolytic milling of tube electrode |
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2007
- 2007-10-24 CN CNU2007200586511U patent/CN201091948Y/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059417A (en) * | 2010-11-30 | 2011-05-18 | 广东轻工职业技术学院 | Electrode and machine tool dedicated for combined machining of electric spark shaping of inner round bore and elastic honing |
| EP3461578A1 (en) * | 2010-12-02 | 2019-04-03 | Rolls-Royce plc | Electrical discharge machining |
| CN106112150B (en) * | 2010-12-02 | 2018-11-09 | 劳斯莱斯有限公司 | Electro-discharge machining |
| CN106112150A (en) * | 2010-12-02 | 2016-11-16 | 劳斯莱斯有限公司 | Electro-discharge machining |
| CN102699460A (en) * | 2012-06-04 | 2012-10-03 | 清华大学 | Electrode guider and online fast switching method for insulation state of electrode side wall |
| EP2671660A3 (en) * | 2012-06-08 | 2018-01-03 | General Electric Company | Electrode and electrochemical machining process for forming non-circular holes |
| CN103028796A (en) * | 2012-12-29 | 2013-04-10 | 苏州市职业大学 | Electrolytic grinding tool for processing incomplete hole |
| CN103252547B (en) * | 2013-05-17 | 2015-07-15 | 哈尔滨汽轮机厂有限责任公司 | Inward-flushing type electrode brush for electric spark machining |
| CN103252547A (en) * | 2013-05-17 | 2013-08-21 | 哈尔滨汽轮机厂有限责任公司 | Inward-flushing type electrode brush for electric spark machining |
| CN105478940A (en) * | 2015-09-02 | 2016-04-13 | 北京市电加工研究所 | Flexible transmission device for electrical discharge machining of internal curved holes |
| CN107378154A (en) * | 2017-07-18 | 2017-11-24 | 青岛科技大学 | A kind of Multifunction expanding tool-electrode for Electrolyzed Processing hole |
| CN107378154B (en) * | 2017-07-18 | 2023-08-25 | 青岛科技大学 | Multifunctional telescopic tool electrode for electrolytic machining of holes |
| CN109382557A (en) * | 2017-08-10 | 2019-02-26 | 中北大学 | A kind of electric discharging machining electrode with helicla flute |
| CN110860747A (en) * | 2019-11-22 | 2020-03-06 | 中国航空制造技术研究院 | Electrode clamp for deep small hole electric spark forming machining and machining method |
| CN111215710A (en) * | 2020-02-24 | 2020-06-02 | 广东工业大学 | On-line repairable micro-discharge machining device and method for slotted electrode |
| CN111215710B (en) * | 2020-02-24 | 2021-09-24 | 广东工业大学 | On-line repairable micro-discharge machining device and method for slotted electrode |
| CN112059343A (en) * | 2020-08-31 | 2020-12-11 | 西安工业大学 | Cathode tool for machining variable-diameter round hole in conductor material and machining method |
| CN112059343B (en) * | 2020-08-31 | 2022-07-08 | 西安工业大学 | Cathode tool for machining variable-diameter round hole in conductor material and machining method |
| CN113118573A (en) * | 2021-03-09 | 2021-07-16 | 广东工业大学 | Method and device for machining deep and narrow groove by electrolytic milling of tube electrode |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |