CN103008802A - High-instantaneous-energy-density electric spark high-speed milling method - Google Patents

High-instantaneous-energy-density electric spark high-speed milling method Download PDF

Info

Publication number
CN103008802A
CN103008802A CN2012105300658A CN201210530065A CN103008802A CN 103008802 A CN103008802 A CN 103008802A CN 2012105300658 A CN2012105300658 A CN 2012105300658A CN 201210530065 A CN201210530065 A CN 201210530065A CN 103008802 A CN103008802 A CN 103008802A
Authority
CN
China
Prior art keywords
electrode
workpiece
liquid
energy density
electric spark
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012105300658A
Other languages
Chinese (zh)
Inventor
刘永红
张彦振
王飞
申泱
唐泽民
纪仁杰
蔡宝平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Petroleum Beijing CUPB
China University of Petroleum UPC East China
Original Assignee
China University of Petroleum UPC East China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Petroleum UPC East China filed Critical China University of Petroleum UPC East China
Priority to CN2012105300658A priority Critical patent/CN103008802A/en
Publication of CN103008802A publication Critical patent/CN103008802A/en
Pending legal-status Critical Current

Links

Abstract

The invention relates to a high-instantaneous-energy-density electric spark high-speed milling method, which belongs to the field of machining. The method comprises the following steps of: connecting a rotary rod-like electrode with an inner flushing fluid hole with a negative electrode of a power supply, connecting a to-be-machined workpiece with a positive electrode of the power supply and melting to remove the workpiece material by utilizing high-instantaneous-energy-density spark discharge between the electrodes and the workpiece in a machining process; discharging molten material out of a discharge gap by working fluid which flows at a high speed; and cooling the machined workpiece. According to the method, by utilizing high-instantaneous-energy-density spark discharge and a high-pressure forced inner flushing fluid and low-pressure outer flushing fluid combined method, the stability and the high efficiency of machining are realized, and high-efficiency machining on any conductive material, including conventional difficult-to-machine materials such as engineering ceramic with weak conductivity and high-temperature alloy, can be realized.

Description

High instantaneous energy density electric spark high speed milling method
Technical field
What the present invention relates to is a kind of high instantaneous energy density electric spark high speed milling method, belongs to field of machining.
Background technology
At present, traditional processing method is difficult to some are had the material realization highly-efficient processing of high rigidity, high strength, high tenacity and high fragility, and processing cost is generally higher.For the processing of aerospace field some nickel-base alloys, titanium-base alloy and some engineering ceramics commonly used, it is the difficult problem of manufacture field always.The processing that discharge is processed as above material provides a kind of effective method, with respect to the high-speed milling process equipment of costliness with and processing cost, electric processing method has embodied its good economy.Spark machined is a kind of processing method that removes material by the discharge of the continuously sparking between electrode and the workpiece to be machined.Owing to directly do not contact between tool-electrode and the workpiece, so that spark machined has macroscopical active force is little, low and realize easily the advantage such as Precision Machining to the requirement of lathe rigidity.But present electromachining equipment ubiquity material is removed inefficient shortcoming.
Put down in writing a kind of bundling electrode of realizing rushing in the large flow liquid for spark machined among the Chinese patent literature CN 1657208A.The beneficial effect of bundling electrode is, turn to and to be polymerized by a large amount of tubuloses or rod-shaped units electrode the monoblock type shaped electrode is discrete, so that with the processing of complex outline, shaped electrode that processing cost is higher be reduced to utilization can be in enormous quantities, the simple tubulose of low-cost production or the combination boundling of rod-shaped units electrode form, therefore decrease electrode cost shortens Production Time.
Bunched electrode high-speed discharge processing method is further disclosed among Chinese patent literature CN 102091839 A, above-mentioned processing method adopts bundling electrode to realize rushing liquid in reinforced high pressure, the large flow porous, uses fluid dynamic current interruption mechanism to guarantee short arc discharge processing.This processing method is the processing and forming mode, and namely tool-electrode and workpiece do not relatively rotate, and have reduced processing flexibility.
The inventor found through experiments: the processing mode that adopts milling, and discharging gap imposed enough liquid energy and enough discharge energies of rushing, can realize high-speed electric spark processing at the lathe with the above automatic servo feeding of three axles or three axles and Backward Function.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of " high instantaneous energy density electric spark high speed milling method " is provided, utilize the high instantaneous energy density spark discharge between electrode and the workpiece, workpiece material is melted; Swiftly flowing working solution is discharged discharging gap with the material of fusing, guarantees the stability of processing; By means of the lathe with the above automatic servo feeding of three axles or three axles and Backward Function, can realize simply, conveniently, economically that high-speed electric spark Milling Process, the method especially are fit to High-speed machining complex-curved, the super large die cavity.
The present invention is achieved by the following technical solutions.The bar-shaped graphite electrode clamping that the present invention at first will contain single or multiple interior flushing holes makes it rotate with the lathe main shaft with certain rotating speed having on the interior machine tool chief axis that rushes the liquid function; The electrode outside is established a cover outwash liquid mechanism in addition, make the working solution with different pressures and flow that is provided by the Water-based working liquid for electrical liquid-supplying system send to the discharging gap that is formed by electrode and workpiece through machine tool chief axis and outwash liquid mechanism simultaneously, in the process, electrode and workpiece connect respectively negative pole and the positive pole of dc source or direct current pulse power source, by the continuous high instantaneous energy density spark discharge between electrode and the workpiece, realize the removal to workpiece material.
Described working solution feed system can provide the Water-based working liquid for electrical with certain pressure and flow and make it flow through the discharging gap that is comprised of electrode and workpiece to the flushing hole of rotation electrode by having the interior machine tool chief axis that rushes the liquid function.
Described working solution feed system can also provide one deck to have certain thickness and the Water-based working liquid for electrical along rotation electrode outer surface high velocity stream to discharging gap by outwash liquid mechanism.
Described tool-electrode refers to: the bar-shaped graphite electrode of high-purity that contains single or multiple flushing holes.
Described tool-electrode rotating speed is 0 ~ 10000 r/min.
Described discharge power supply refers to: provide pulse width and pulse spacing scope to be respectively 0.1 ~ 1000 ms, crest voltage is 50 ~ 300 V, and peak point current is the high power DC pulse power of 100 ~ 5000 A.
Described lathe refers to: the lathe that has at least three axle automatic servo feedings and Backward Function.
Described Water-based working liquid for electrical is water content greater than 95% oil-in-water emulsion.
Beneficial effect of the present invention is: utilize the spark discharge with high instantaneous energy density to carry out the material ablation, and rush the method assurance processing stability that liquid is combined with the outwash liquid phase in adopting, have far above the obtainable material of common electrical spark discharge machining and remove ability; Process can adopt three axles or multi-shaft interlocked mode, can easily realize highly-efficient processing complex-curved and large die cavity.This processing method can realize highly-efficient processing to some other the difficult processing of tradition conductive materials such as engineering ceramics, high temperature alloy with certain electric conductivity.
Description of drawings
Fig. 1 is high instantaneous energy density electric spark high speed milling equipment schematic diagram.
Fig. 2 is high instantaneous energy density electric spark high speed Milling Process principle schematic.
The specific embodiment
The below elaborates to embodiments of the invention, and present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the present embodiment applied environment comprises: the bar-shaped graphite electrode 1 that contains single interior flushing hole, pending workpiece 2, discharge power supply 3, Water-based working liquid for electrical feed system 4, outwash liquid mechanism 5 and have the interior machine tool chief axis 6 that rushes the liquid function, wherein: tool-electrode 1 clamping has on the interior machine tool chief axis 6 that rushes the liquid function, rotate with certain rotating speed with main shaft, tool-electrode 1 outside is established a cover outwash liquid mechanism 5 in addition, make the working solution with different pressures and flow that is provided by Water-based working liquid for electrical liquid-supplying system 4 send to the discharging gap that is formed by tool-electrode 1 and pending workpiece 2 through having interior machine tool chief axis 6 and the outwash liquid mechanism 5 that rushes the liquid function simultaneously, to the rapidly cooling and it is discharged rapidly discharging gap of the material that is melted, as shown in Figure 2.In the process, workpiece and electrode connect respectively positive pole and the negative pole of direct current pulse power source, by the continuous high instantaneous energy density spark discharge between electrode and the workpiece, realize the highly-efficient processing to workpiece.
Embodiment 1
Utilize the lathe of tool three axle automatic servo feedings and Backward Function, the speed of mainshaft 3000 r/min, the diameter of tool-electrode 1 is 10 mm, the diameter of center flushing hole is 4 mm, material is highly purified graphite, pending workpiece 2 materials are mould steel 8407, utilize pulse width 3 ms, pulse spacing 1 ms, crest voltage is 80 V, peak point current is that 800 a-power supply parameters are processed, working solution is that water content is 95% oil-in-water emulsion, and the interior working fluid pressure that rushes the liquid system and provide is 0.5 MPa, and the working solution outlet pressure that outwash liquid system provides is 0.3 MPa, machining locus is first straight down feeding of tool-electrode 5 mm, and then move horizontally 50 mm, and processing a keyway shape structure, the material removing rate of the mould steel 8407 that obtains is 8952 mm 3/ min.
Embodiment 2
The conversion workpiece material, with the general applicability of abundant checking high speed arc spraying discharging milling processing to different materials, the selection workpiece material is titanium alloy (model TC4), and other processing conditions are constant among the maintenance embodiment 1, and the material removing rate of TC4 is 14263 mm 3/ min.
Embodiment 3
The selection workpiece material is carbon steel (S45C), and other processing conditions are constant among the maintenance embodiment 1, and the material removing rate of carbon steel S45C is 10127 mm 3/ min.

Claims (7)

1. one kind high instantaneous energy density electric spark high speed milling method is characterized in that, the stick electrode clamping that will contain single or multiple interior flushing holes makes it rotate with the lathe main shaft with certain rotating speed having on the interior machine tool chief axis that rushes the liquid function; The electrode outside is established a cover outwash liquid mechanism in addition, make the working solution with different pressures and flow that is provided by the Water-based working liquid for electrical feed system send to the discharging gap that is formed by electrode and workpiece through machine tool chief axis and outwash liquid mechanism simultaneously, in the process, workpiece and electrode connect respectively positive pole and the negative pole of direct current pulse power source, by the high instantaneous energy density spark discharge between electrode and the workpiece, realize the highly-efficient processing to workpiece.
2. high instantaneous energy density electric spark high speed milling method according to claim 1, it is characterized in that described working solution feed system can provide the Water-based working liquid for electrical with certain pressure and flow and it is flow through by electrode and workpiece to the flushing hole of rotation electrode and form discharging gap by having the interior machine tool chief axis that rushes the liquid function.
3. high instantaneous energy density electric spark high speed milling method according to claim 1, it is characterized in that described working solution feed system can also provide one deck to have certain thickness and the working solution along rotation electrode outer surface high velocity stream to discharging gap by outwash liquid mechanism.
4. high instantaneous energy density electric spark high speed milling method according to claim 1 is characterized in that, described tool-electrode is the bar-shaped graphite electrode of high-purity that contains single or multiple flushing holes.
5. high instantaneous energy density electric spark high speed milling method according to claim 1, it is characterized in that, described discharge power supply refers to: pulse width and pulse spacing scope are respectively 0.1 ~ 1000 ms, crest voltage is 50 ~ 300 V, and peak point current is the high power DC pulse power of 100 ~ 5000 A.
6. high instantaneous energy density electric spark high speed milling method according to claim 1 is characterized in that described lathe refers to: the lathe with at least three axle automatic servo feedings and Backward Function.
7. high instantaneous energy density electric spark high speed milling method according to claim 1 is characterized in that, described Water-based working liquid for electrical is water content greater than 95% oil-in-water emulsion.
CN2012105300658A 2012-12-11 2012-12-11 High-instantaneous-energy-density electric spark high-speed milling method Pending CN103008802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012105300658A CN103008802A (en) 2012-12-11 2012-12-11 High-instantaneous-energy-density electric spark high-speed milling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012105300658A CN103008802A (en) 2012-12-11 2012-12-11 High-instantaneous-energy-density electric spark high-speed milling method

Publications (1)

Publication Number Publication Date
CN103008802A true CN103008802A (en) 2013-04-03

Family

ID=47958209

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012105300658A Pending CN103008802A (en) 2012-12-11 2012-12-11 High-instantaneous-energy-density electric spark high-speed milling method

Country Status (1)

Country Link
CN (1) CN103008802A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878453A (en) * 2014-01-07 2014-06-25 江南大学 Internal-liquid-flushable electric spark processing porous forming electrode
CN104759716A (en) * 2015-04-09 2015-07-08 上海交通大学 High-speed arc discharge machining self-adaption fluid flushing system
CN105215495A (en) * 2015-10-21 2016-01-06 贵州黎阳国际制造有限公司 A kind of method for the processing of titanium alloy deep blind slot corner angle
CN105234508A (en) * 2015-11-16 2016-01-13 四川明日宇航工业有限责任公司 Method for electrically milling high-temperature alloy
CN105269092A (en) * 2015-11-16 2016-01-27 四川明日宇航工业有限责任公司 Electric milling electrode
CN105345179A (en) * 2015-11-16 2016-02-24 四川明日宇航工业有限责任公司 Electric milling method for titanium alloy material
CN106141340A (en) * 2015-04-24 2016-11-23 通用电气公司 Contour machining method and the part with the method processing
CN106180923A (en) * 2015-04-29 2016-12-07 首都航天机械公司 A kind of micro three-dimensional structure electric spark milling process method
CN107119183A (en) * 2017-05-19 2017-09-01 中国石油大学(华东) A kind of preparation method of high-strength high hard metal material surface gradient nano structure
CN107177722A (en) * 2017-05-19 2017-09-19 中国石油大学(华东) A kind of preparation facilities of high-strength high hard metal material surface gradient nano structure
CN107649755A (en) * 2017-11-01 2018-02-02 上海交通大学 High speed arc spraying electric discharge grinding combined machining method
CN107824918A (en) * 2017-10-26 2018-03-23 南京航空航天大学 Aid in fliud flushing electrolysis milling processing blisk system and method
CN108655523A (en) * 2018-05-18 2018-10-16 青岛理工大学 A kind of device improving high current arc discharging milling machining accuracy
CN108672852A (en) * 2018-07-10 2018-10-19 南京航空航天大学 A kind of electric discharge machining method of pulse power single pulse energy non-uniform Distribution
CN109175551A (en) * 2018-10-13 2019-01-11 中北大学 Electrical discharge machining galvanic corrosion product discharge method
CN109175550A (en) * 2018-10-13 2019-01-11 中北大学 Electrical discharge machining galvanic corrosion product discharger
CN110193639A (en) * 2019-06-21 2019-09-03 江西洪都航空工业集团有限责任公司 A kind of upper cover class workpiece angle boss processing unit (plant) and processing method
CN110238466A (en) * 2019-06-28 2019-09-17 深圳创源航天科技有限公司 Fliud flushing device and process equipment inside and outside electric arc microexplosion

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0557527A (en) * 1991-08-27 1993-03-09 Makino Milling Mach Co Ltd Electric discharge machining method and its device
US5336863A (en) * 1991-05-10 1994-08-09 Sodick Co., Ltd. Method of, and an apparatus for, electrical-discharge machining
JP3389034B2 (en) * 1997-01-13 2003-03-24 三菱重工業株式会社 Processing method of workpiece with insulating ceramic film
CN102806391A (en) * 2011-05-30 2012-12-05 发那科株式会社 Wire-cut electric discharge machine with wire electrode cutting function

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5336863A (en) * 1991-05-10 1994-08-09 Sodick Co., Ltd. Method of, and an apparatus for, electrical-discharge machining
JPH0557527A (en) * 1991-08-27 1993-03-09 Makino Milling Mach Co Ltd Electric discharge machining method and its device
JP3389034B2 (en) * 1997-01-13 2003-03-24 三菱重工業株式会社 Processing method of workpiece with insulating ceramic film
CN102806391A (en) * 2011-05-30 2012-12-05 发那科株式会社 Wire-cut electric discharge machine with wire electrode cutting function

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
佟浩等: "电火花伺服铣削高效加工工艺", 《第14届全国特种加工学术会议论文集》 *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878453A (en) * 2014-01-07 2014-06-25 江南大学 Internal-liquid-flushable electric spark processing porous forming electrode
CN104759716A (en) * 2015-04-09 2015-07-08 上海交通大学 High-speed arc discharge machining self-adaption fluid flushing system
CN106141340A (en) * 2015-04-24 2016-11-23 通用电气公司 Contour machining method and the part with the method processing
US10974336B2 (en) 2015-04-24 2021-04-13 General Electric Company Method for profile machining
CN106180923A (en) * 2015-04-29 2016-12-07 首都航天机械公司 A kind of micro three-dimensional structure electric spark milling process method
CN106180923B (en) * 2015-04-29 2018-08-21 首都航天机械公司 A kind of micro three-dimensional structure electric spark milling process method
CN105215495A (en) * 2015-10-21 2016-01-06 贵州黎阳国际制造有限公司 A kind of method for the processing of titanium alloy deep blind slot corner angle
CN105345179A (en) * 2015-11-16 2016-02-24 四川明日宇航工业有限责任公司 Electric milling method for titanium alloy material
CN105234508A (en) * 2015-11-16 2016-01-13 四川明日宇航工业有限责任公司 Method for electrically milling high-temperature alloy
CN105234508B (en) * 2015-11-16 2018-09-25 四川明日宇航工业有限责任公司 A kind of high temperature alloy electric router cutting method
CN105269092A (en) * 2015-11-16 2016-01-27 四川明日宇航工业有限责任公司 Electric milling electrode
CN107177722A (en) * 2017-05-19 2017-09-19 中国石油大学(华东) A kind of preparation facilities of high-strength high hard metal material surface gradient nano structure
CN107119183A (en) * 2017-05-19 2017-09-01 中国石油大学(华东) A kind of preparation method of high-strength high hard metal material surface gradient nano structure
CN107824918A (en) * 2017-10-26 2018-03-23 南京航空航天大学 Aid in fliud flushing electrolysis milling processing blisk system and method
CN107649755A (en) * 2017-11-01 2018-02-02 上海交通大学 High speed arc spraying electric discharge grinding combined machining method
CN108655523A (en) * 2018-05-18 2018-10-16 青岛理工大学 A kind of device improving high current arc discharging milling machining accuracy
CN108655523B (en) * 2018-05-18 2019-03-05 青岛理工大学 A kind of device improving high current arc discharging milling machining accuracy
CN108672852A (en) * 2018-07-10 2018-10-19 南京航空航天大学 A kind of electric discharge machining method of pulse power single pulse energy non-uniform Distribution
CN109175551A (en) * 2018-10-13 2019-01-11 中北大学 Electrical discharge machining galvanic corrosion product discharge method
CN109175550A (en) * 2018-10-13 2019-01-11 中北大学 Electrical discharge machining galvanic corrosion product discharger
CN110193639A (en) * 2019-06-21 2019-09-03 江西洪都航空工业集团有限责任公司 A kind of upper cover class workpiece angle boss processing unit (plant) and processing method
CN110238466A (en) * 2019-06-28 2019-09-17 深圳创源航天科技有限公司 Fliud flushing device and process equipment inside and outside electric arc microexplosion

Similar Documents

Publication Publication Date Title
CN103008802A (en) High-instantaneous-energy-density electric spark high-speed milling method
CN102091839B (en) Bunched electrode high-speed discharge processing method
CN103801771B (en) High-speed cutting electro-discharge machining method
CN102773572B (en) Overlaid plate type internal solution filling forming electrode for high-speed electric discharge machining
CN103551688B (en) A kind of method and device improving electric spark high speed perforation machining surface integrity
CN102699453B (en) Electric spark machining method and device for micro inverted taper hole
US10646940B2 (en) Machining method for three-dimensional open flow channel using high-speed arc discharge layered sweep
CN107649755A (en) High speed arc spraying electric discharge grinding combined machining method
Kou et al. Machining characteristics and removal mechanisms of moving electric arcs in high-speed EDM milling
CN104907648A (en) Arc profile cutting discharge processing method based on combined arc breaking and efficient chip removal
CN202752713U (en) Electric spark machining device of small back-tapered hole
CN109967805B (en) Tool cathode for electrochemical discharge mechanical milling composite machining and use method
CN106270860A (en) High speed arc spraying electro-discharge machining handle device based on standard interface
Cao et al. Deep-type hole machining by inner jetted aerosol dielectric ablation
CN111151832B (en) Rotary arc milling device, milling machine tool and control system thereof
CN110756926B (en) Electric spark electrolysis continuous machining method for milling plane
CN108127200A (en) Porous metal material module tubes electrolysis sprays Milling Process tool and method
CN109702281B (en) Electric arc grinding composite tool electrode
Choudhary et al. Current Research development in Dry Electric Discharge Machining (DEDM)
Yu et al. Multi-channel aerosol dielectric electrical discharge machining ablation based on discrete electrode
Jingyun et al. Discharge ablation grinding machining based on constantpressure feeding
CN108620699B (en) Anti- short-circuit porous high-efficiency fliud flushing electrode for arc discharge processing
CN203140911U (en) Aluminum linear-cutting machine tool
CN108213625A (en) A kind of electrochemical drilling and the tool and method of reaming Compound Machining elongated hole
CN101585102B (en) Electrical spark face milling tool electrode

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130403

C02 Deemed withdrawal of patent application after publication (patent law 2001)