CN106825805A - Demountable combined-type tool cathode and its electrolytic mill milling method - Google Patents

Demountable combined-type tool cathode and its electrolytic mill milling method Download PDF

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Publication number
CN106825805A
CN106825805A CN201710120203.8A CN201710120203A CN106825805A CN 106825805 A CN106825805 A CN 106825805A CN 201710120203 A CN201710120203 A CN 201710120203A CN 106825805 A CN106825805 A CN 106825805A
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China
Prior art keywords
bistrique
knife bar
tool cathode
tool
hole
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CN201710120203.8A
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Chinese (zh)
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CN106825805B (en
Inventor
曲宁松
牛屾
李寒松
付书星
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南京航空航天大学
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Priority to CN201710120203.8A priority Critical patent/CN106825805B/en
Publication of CN106825805A publication Critical patent/CN106825805A/en
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Publication of CN106825805B publication Critical patent/CN106825805B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H5/00Combined machining
    • B23H5/06Electrochemical machining combined with mechanical working, e.g. grinding or honing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H5/00Combined machining
    • B23H5/10Electrodes specially adapted therefor or their manufacture

Abstract

The present invention relates to a kind of Demountable combined-type tool cathode and its electrolytic mill milling method, belong to electrolysis milling Compound Machining field.Collapsible tool negative electrode of the invention, including bistrique, sealing ring and knife bar.Wherein, the bottom side of the wall of bistrique and bottom surface are provided with fluid hole and are electroplate with abrasive grain layer, and the hexagon flange lower surface of bistrique is coated with insulating barrier, and during installation, bistrique and knife bar are connected through a screw thread, in sealing ring insertion knife bar rabbet groove.Using tool cathode proposed by the present invention, " drilling formula " first can be carried out in workpiece surface any place and be machined to required depth, then carry out " milling type " to process required structure.The present invention can significantly reduce the cost of charp tool of electrolytic mill Milling Machining, and extend the range of application of the technology.

Description

Demountable combined-type tool cathode and its electrolytic mill milling method
Technical field
The present invention relates to a kind of Demountable combined-type tool cathode and its electrolytic mill milling method, belong to electrochemical grinding and answer Close manufacture field.
Background technology
The metal materials such as nickel base superalloy, titanium alloy have been widely used for the industry such as Aero-Space, ship, oil In.By taking aviation as an example, the usage amount of nickel base superalloy has accounted for the 57% of PW4000 engine gross masses, titanium The usage amount of alloy has accounted for the 41% of Fourth Generation Fighters F-22 gross masses.However, because these materials have high temperature strong Degree is high, the low feature of thermal conductivity factor so that cutting force is big in cutting process, cutting temperature is high, tool wear seriously with And processing hardening is notable.Simultaneously as the structure design characteristic of space shuttle parts, substantial amounts of material is needed from monoblock blank Middle removal, this also results in machining cost higher.Therefore, low processing efficiency and quality cannot meet ever-increasing Process requirements, this brings lot of challenges to the development of modern manufacturing industry.
Electrochemical grinding is that a kind of being acted on by electrolysis and mechanical grinding be mutually combined and realize the processing method that material is removed. Traditional electrochemical grinding processing generally uses conductive emery wheel as tool cathode, and sprays electricity to machining area by external nozzle Solution liquid.Under electrolysis, workpiece surface metal dissolves and generates softer sull, the emery wheel for being rotated immediately Abrasive particle strikes off, and new metal surface is exposed again and electrolysis is continued, so repeatedly, until reaching certain dimensional accuracy and surface Roughness.In whole process, most of metal material is removed in the form of an ion, therefore the loss of grinding tool is smaller, It is very suitable for the metal material of difficult processing cutting.However, being limited by grinding wheel structure and feed liquid way, traditional electrochemical grinding Processing flexibility and less efficient, this is unfavorable for the popularization of the technical advantage.
To improve this problem, electrolytic mill Milling Machining is suggested, i.e., using bar-shaped bistrique as tool cathode, with similar number The mode for controlling milling is collectively forming the generation line of profile by the rotary motion of bistrique electrode and the feed motion of workpiece, by tangent The method that method forms processing.Processed compared to traditional electrochemical grinding, the introducing of numerical control milling mode is significantly improved and added The flexibility of work, is capable of achieving type face, die cavity, thin-walled and the isostructural processing of boss.Initially, electrolytic mill Milling Machining is still using external The mode of nozzle provides electrolyte to machining area.However, this feed liquid way is easily caused electrolyte major part from workpiece table Surface current loses, and when processing cutting-in and being larger, the processing product in pole clearance is difficult to be taken away in time, as a result limits material removal The raising of rate.Therefore, interior liquid-spraying type electrolytic mill Milling Machining by it is further proposed that, electrolyte can be directly injected to by bistrique endoporus In processing gap, and processing product is taken away in time.As a result, the material thickness that single feed is removed is significantly improved, electrolysis The processing efficiency of milling is further improved.
At present, the tool cathode mostly integral type that interior liquid-spraying type electrolytic mill Milling Machining is used, that is, need first in base when preparing Body top processes a blind hole, then processes some fluid holes in base side walls, finally electroplates gold in matrix machining area Hard rock abrasive particle.Because tool cathode is needed with certain length in order to fixed and positioned, cause the aspect ratio of institute's processing blind hole It is generally large, often labor intensive during fabrication.For example, during processing blind hole, the chip of generation must timely use air gun Blowout, otherwise easy feed is obstructed or even causes tool damage.Additionally, in actual production, often there is the system of many structural members Needs are made to be proceeded by from workpiece surface, but for electrolytic mill Milling Machining, because fluid hole is generally only designed in work Have the side wall of negative electrode, cause tool cathode that material can only be also removed since the side-walls of workpiece, limit the application of the technology Scope.As a result, these problems seriously constrain the further development and popularization of electrolytic mill Milling Machining technology.
The content of the invention
The invention reside in regarding to the issue above, proposing a kind of low manufacture cost, to remove and install convenient collapsible tool cloudy Pole and its electrolytic mill milling method, extend the range of application of the technology.
A kind of Demountable combined-type tool cathode, it is characterised in that:Including bistrique, sealing ring and knife bar;The bistrique is It is provided with central blind hole, the cylindrical structure of lower end closed upper end open;The bistrique bottom side of the wall outer surface and bottom end face are electroplated There is abrasive grain layer, height of the abrasive grain layer on the wall of bistrique side is equal with required working depth, and lower end outer surface and bottom end face are also It is provided with some fluid holes communicated with central blind hole;The lower surface that bistrique middle part outside has mounting flange, mounting flange applies It is covered with insulating materials;The bistrique upper end side wall is provided with positioning external screw thread;The knife bar is hollow cylindrical structure, knife bar inner side Rabbet groove, screwed hole and through hole are disposed with from bottom to top;The sealing ring is located in the rabbet groove of knife bar, and the bistrique leads to External screw thread is crossed to be installed in the screwed hole of the knife bar.
Described Demountable combined-type tool cathode, it is characterised in that:The diameter of the through hole of the knife bar and the bistrique Central blind hole equal diameters;The seam groove depth of height of the bistrique more than the upper surface of mounting flange and the knife bar Degree is equal with screw thread hole depth sum.
Described Demountable combined-type tool cathode, it is characterised in that:The composition material of the knife bar is stainless steel, described The matrix material of bistrique is common steel.
The electrolytic mill milling method of described Demountable combined-type tool cathode, it is characterised in that including procedure below: Vertical clamping is on spindle head of lathe vertically and connects working power negative pole for knife bar, and sealing ring is positioned over the mounting flange of bistrique On end face, clamp the mounting flange by turning tool to drive bistrique to rotate into knife bar until clamping;Clamping workpiece is existed On platen and connect working power positive pole, completed to knife, positioning by the kinetic control system of lathe;During processing, instrument Negative electrode rotates at a high speed with main shaft, and electrolyte sprays simultaneously from the fluid hole of bistrique, and tool cathode is first worked into institute along Z axis negative sense Depth is needed, then tool cathode Z-direction is motionless, workpiece starts to be fed with certain path along X/Y plane, you can needed for processing Structure;
When processing needs tool changing, the kinetic control system withdrawing of lathe is first passed through, reuse turning tool and dismantle old bistrique And new bistrique is installed, then to knife, positioning, can continue to start to add.
The present invention has advantages below:
1st, the Demountable combined-type tool cathode that the present invention is provided has a split-type structural, knife bar and bistrique can separate machined, by Be hollow cylindrical structure in knife bar, only need processing blind hole on bistrique, thus with conventional integral tool negative electrode phase Than, the aspect ratio of required processing blind hole is obviously reduced, meanwhile, after old bistrique is with giving up, the bistrique that only need to more renew, by Corrosion resistant stainless steel material is employed in knife bar, therefore knife bar is reusable, it is cloudy that these features significantly reduce instrument The manufacturing cost of pole.
2nd, the present invention carries out insulation processing by the hexagon flange lower surface to bistrique, effectively improves the surface to work The dispersion corrosion effect on the non-processing surface of part so that electrolytic mill Milling Machining has more preferable locality.
3rd, the present invention is embedded in sealing ring by the rabbet groove in knife bar, the collapsible tool negative electrode after installation is had more Good sealing, can effectively prevent solution leakage in process.
4th, the Demountable combined-type tool cathode that the present invention is provided is equipped with some fluid holes in side wall and bottom surface, therefore can First " drilling formula " is machined to certain depth since workpiece surface any place, then carries out " milling type " and process plane, thin-walled With the structure such as groove, break the limitation for being only capable of being processed since workpiece side-walls, extend the processing of electrolysis milling technology Method, is conducive to further genralrlization and the application of the technology.
Brief description of the drawings
The Standard schematic diagram of Fig. 1 Demountable combined-type tool cathodes;
The schematic diagram of Fig. 2 bistrique matrixes;
The schematic diagram of Fig. 3 knife bars;
Fig. 4 carries out " drilling formula " machining sketch chart using collapsible tool negative electrode in Fig. 1 in workpiece surface;
Fig. 5 carries out " milling type " machining sketch chart using collapsible tool negative electrode in Fig. 1 in inside workpiece;
Label is entitled in figure:1st, bistrique, 2, sealing ring, 3 knife bars, 4, fluid hole, 5, insulating barrier, 6, abrasive grain layer, 7, hexagon Flange, 8, positioning external screw thread, 9, central blind hole, 10, rabbet groove, 11, screwed hole, 12, through hole, 13, workpiece, 14, working power, 15th, electrolyte supply direction, 16, tool cathode direction of rotation, 17, tool cathode direction of feed, 18, workpiece direction of feed.
Specific embodiment
With reference to specific accompanying drawing, the present invention is described in further detail.
As shown in Fig. 1 ~ 3, a kind of Demountable combined-type tool cathode, including bistrique 1, sealing ring 2 and knife bar 3.The mill Head is that, with the columnar structured of hexagon flange 7, the bottom side of the wall of the bistrique 1 and bottom surface are provided with and its central blind hole 9 The fluid hole 4 for communicating, and abrasive grain layer 6 is electroplate with, the upper end side wall of the bistrique 1 is provided with positioning external screw thread 8, the bistrique 1 The lower surface of hexagon flange 7 is coated with insulating barrier 5, and the knife bar 3 is hollow cylindrical structure, and inside is provided with seam successively Groove 10, screwed hole 11, through hole 12, the material of the knife bar 3 are the stainless steel material of anti-electrolytic corrosion, the bistrique 1 and institute The installation and dismounting for stating knife bar 3 are connected through a screw thread and carry out, and the sealing ring 2 is embedded in stopping for the knife bar 3 after mounting In mouth groove 10.
As shown in Fig. 4 ~ 5, electrolytic mill Milling Machining is carried out using described collapsible tool negative electrode, its method mainly include with Lower step:
Step 1, by knife bar 3 vertically vertical clamping on spindle head of lathe, sealing ring 2 is positioned over the hexagon flange 7 of bistrique 1 On end face, hexagon flange 7 is clamped by turning tool and is rotated, to drive bistrique 1 to enter handle of a knife 3 until clamping, the quilt of sealing ring 2 In the rabbet groove 10 of embedded handle of a knife 3;
Step 2, the negative pole that collapsible tool negative electrode is connect working power 14, workpiece 13 connects the positive pole of working power 14, by machine The kinetic control system of bed is completed to knife, positioning, first between making the bottom end face of bistrique 1 and the upper surface of workpiece 13 to be processed Beginning gap be 0.3mm;
When step 3, processing, the collapsible tool negative electrode rotates at a high speed along direction 16, and electrolyte is along direction 15 from the through hole of handle of a knife 3 12 enter, and are sprayed from the fluid hole 4 of bistrique 1, and tool cathode is first processed along direction 17 since the upper surface of workpiece 13, until reaching The working depth of setting, then workpiece 13 feeds along direction 18, until the groove needed for processing stops;
Step 4, withdrawing, clamp hexagon flange 7 and dismantle with useless bistrique 1, the bistrique 1 for more renewing, continuation by turning tool Since step 1, until processing request needed for completing.
The present invention can effectively reduce the cutter making cost of electrolytic mill Milling Machining and expand the range of application of the technology, but Above description can not be interpreted as the limitation to patent of the present invention.It should be noted that not departing from the premise of present inventive concept Under, some improvement can also be made, these all should fall into the protection of patent of the present invention.

Claims (4)

1. a kind of Demountable combined-type tool cathode, it is characterised in that:
Including bistrique(6), sealing ring(2)And knife bar(3);
The bistrique(6)To be provided with central blind hole, the cylindrical structure of lower end closed upper end open;The bistrique(6)Outside bottom side of the wall Surface and bottom end face are plated with abrasive grain layer, and height of the abrasive grain layer on the wall of bistrique side is equal with required working depth, under End outer surface and bottom end face are also provided with some fluid holes communicated with central blind hole(4);The bistrique(6)Middle part outside has peace Dress flange(5), mounting flange(5)Lower surface be coated with insulating materials;The bistrique(6)Upper end side wall is provided with positioning external screw thread (8);
The knife bar(3)It is hollow cylindrical structure, knife bar(3)Inner side is disposed with rabbet groove from bottom to top(10), spiral shell Pit(11)And through hole(12);
The sealing ring(2)Positioned at knife bar(3)Rabbet groove(10)In, the bistrique(6)By external screw thread(8)It is installed on described Knife bar(3)Screwed hole(11)In.
2. Demountable combined-type tool cathode according to claim 1, it is characterised in that:
The knife bar(3)Through hole(12)Diameter and the bistrique(6)Central blind hole equal diameters;
The bistrique(6)In mounting flange(5)Upper surface more than height and the knife bar(3)Seam(10)Groove depth and Screwed hole(11)Depth sum is equal.
3. Demountable combined-type tool cathode according to claim 1, it is characterised in that:The knife bar(3)Composition material Expect to be stainless steel, the bistrique(6)Matrix material be common steel.
4. the electrolytic mill milling method of Demountable combined-type tool cathode according to claim 1, it is characterised in that bag Include procedure below:
Knife bar(3)Vertical clamping is on spindle head of lathe vertically and connects working power negative pole, by sealing ring(2)It is positioned over bistrique Mounting flange(7)On end face, the mounting flange is clamped by turning tool(7)To drive bistrique(6)Rotate into knife bar(3) Until clamping;
Clamping workpiece on platen and is connect into working power positive pole, by the kinetic control system of lathe complete to knife, Positioning;
During processing, tool cathode rotates at a high speed with main shaft, and electrolyte is from bistrique(6)Fluid hole(4)In spray simultaneously, instrument is cloudy Required depth first extremely is worked into along Z axis negative sense, then tool cathode Z-direction is motionless, and workpiece starts along X/Y plane with certain road Footpath feeds, you can process required structure;
When processing needs tool changing, the kinetic control system withdrawing of lathe is first passed through, reuse turning tool and dismantle old bistrique And new bistrique is installed, then to knife, positioning, can continue to start processing.
CN201710120203.8A 2017-03-02 2017-03-02 Demountable combined-type tool cathode and its electrolytic mill milling method CN106825805B (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107931759A (en) * 2017-12-01 2018-04-20 广东工业大学 A kind of internal combustion catholyte milling device
CN108080755A (en) * 2017-11-28 2018-05-29 南京航空航天大学 Improve the tool cathode and method of electrolysis milling processing bottom surface planarization
CN108127200A (en) * 2017-11-16 2018-06-08 南京航空航天大学 Porous metal material module tubes electrolysis sprays Milling Process tool and method
CN108188511A (en) * 2018-01-02 2018-06-22 南京航空航天大学 It is electrolysed the efficiently coarse-fine process integration processing method of milling
CN108581100A (en) * 2018-05-04 2018-09-28 山东大学 Inner passage ultrasonic vibration assists internal combustion electrochemical grinding system and method
CN108620699A (en) * 2018-05-10 2018-10-09 上海交通大学 Anti- short-circuit porous high-efficiency fliud flushing electrode for arc discharge processing
CN110014294A (en) * 2019-05-10 2019-07-16 山东大学 Mill integral processing apparatus and system are bored in group's hole pipe electrode electrolysis
CN110508885A (en) * 2019-08-29 2019-11-29 安徽理工大学 It is a kind of to be vortexed with the discharge of rush erosion object, counteracting, go to remain the pipe electrode and production method of peak, self correction function
CN111215711A (en) * 2019-12-06 2020-06-02 常州工学院 Cathode for electrolytic machining

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CN105215488A (en) * 2015-10-15 2016-01-06 南京航空航天大学 Electrolysis milling Compound Machining negative electrode grinding head device
CN105921834A (en) * 2016-06-06 2016-09-07 南京航空航天大学 Electrolysis, grinding and milling machining tool cathode and method
CN106077855A (en) * 2016-07-11 2016-11-09 上海交通大学 The rotation electrode of liquid high speed arc spraying electro-discharge machining in orientation

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JP2008264929A (en) * 2007-04-20 2008-11-06 Tokyo Stainless Kenma Kogyo Kk Electrolytic polishing device
CN104551277A (en) * 2015-01-08 2015-04-29 安徽工业大学 Wire saw winding tool electrode for electrochemical-mechanical combined processing
CN105215488A (en) * 2015-10-15 2016-01-06 南京航空航天大学 Electrolysis milling Compound Machining negative electrode grinding head device
CN105921834A (en) * 2016-06-06 2016-09-07 南京航空航天大学 Electrolysis, grinding and milling machining tool cathode and method
CN106077855A (en) * 2016-07-11 2016-11-09 上海交通大学 The rotation electrode of liquid high speed arc spraying electro-discharge machining in orientation

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108127200A (en) * 2017-11-16 2018-06-08 南京航空航天大学 Porous metal material module tubes electrolysis sprays Milling Process tool and method
CN108080755B (en) * 2017-11-28 2019-06-04 南京航空航天大学 Improve the tool cathode and method of electrolysis milling processing bottom surface planarization
CN108080755A (en) * 2017-11-28 2018-05-29 南京航空航天大学 Improve the tool cathode and method of electrolysis milling processing bottom surface planarization
CN107931759B (en) * 2017-12-01 2019-09-24 广东工业大学 A kind of internal combustion catholyte milling device
CN107931759A (en) * 2017-12-01 2018-04-20 广东工业大学 A kind of internal combustion catholyte milling device
CN108188511A (en) * 2018-01-02 2018-06-22 南京航空航天大学 It is electrolysed the efficiently coarse-fine process integration processing method of milling
CN108581100A (en) * 2018-05-04 2018-09-28 山东大学 Inner passage ultrasonic vibration assists internal combustion electrochemical grinding system and method
CN108581100B (en) * 2018-05-04 2019-08-23 山东大学 Inner passage ultrasonic vibration assists internal combustion electrochemical grinding system and method
CN108620699A (en) * 2018-05-10 2018-10-09 上海交通大学 Anti- short-circuit porous high-efficiency fliud flushing electrode for arc discharge processing
CN108620699B (en) * 2018-05-10 2019-11-19 上海交通大学 Anti- short-circuit porous high-efficiency fliud flushing electrode for arc discharge processing
CN110014294A (en) * 2019-05-10 2019-07-16 山东大学 Mill integral processing apparatus and system are bored in group's hole pipe electrode electrolysis
CN110508885A (en) * 2019-08-29 2019-11-29 安徽理工大学 It is a kind of to be vortexed with the discharge of rush erosion object, counteracting, go to remain the pipe electrode and production method of peak, self correction function
CN111215711A (en) * 2019-12-06 2020-06-02 常州工学院 Cathode for electrolytic machining

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