CN106238838B - Method for electrochemically machining ellipsoidal bamboo joint hole - Google Patents
Method for electrochemically machining ellipsoidal bamboo joint hole Download PDFInfo
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- CN106238838B CN106238838B CN201610616100.6A CN201610616100A CN106238838B CN 106238838 B CN106238838 B CN 106238838B CN 201610616100 A CN201610616100 A CN 201610616100A CN 106238838 B CN106238838 B CN 106238838B
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- electrode
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- ring hole
- electrolyte
- metal tube
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000003754 machining Methods 0.000 title claims abstract description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 title abstract 9
- 235000017491 Bambusa tulda Nutrition 0.000 title abstract 9
- 241001330002 Bambuseae Species 0.000 title abstract 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 title abstract 9
- 239000011425 bamboo Substances 0.000 title abstract 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 31
- 230000005684 electric field Effects 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 76
- 229910052751 metal Inorganic materials 0.000 claims description 76
- 238000009413 insulation Methods 0.000 claims description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 239000011347 resin Substances 0.000 claims description 22
- 229920005989 resin Polymers 0.000 claims description 22
- 239000004568 cement Substances 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 16
- 238000000866 electrolytic etching Methods 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 13
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Inorganic materials [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 239000007769 metal material Substances 0.000 claims description 11
- 238000001311 chemical methods and process Methods 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000005868 electrolysis reaction Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000010129 solution processing Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING 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
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING 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
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/04—Electrodes specially adapted therefor or their manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING 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
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/08—Working media
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
A method for electrochemically machining ellipsoidal bamboo joint holes comprises the following steps: 1) preparing a tool electrode A; 2) preparing a tool electrode B; 3) processing a circular bamboo joint hole; feeding a tool electrode A into a pre-machined unthreaded hole on a workpiece to be machined, then enabling an electrolyte to flow from bottom to top along a gap between the tool electrode A and the inner wall of the unthreaded hole on the workpiece to be machined, and removing the surface of the workpiece to be machined under the action of an electric field to form a circular bamboo joint hole; 4) processing an ellipsoidal bamboo joint hole: taking out the tool electrode A in the step 3), inserting a tool electrode B into the circular bamboo joint hole, driving the tool electrode B to reciprocate along the circumferential direction according to a set angle through a machine tool spindle, performing secondary electrolytic machining on the inner wall surface of the circular bamboo joint hole in an electrolytic machining area, and gradually forming an ellipsoidal bamboo joint hole in the circular bamboo joint hole. The invention has small size of the bore diameter to be processed and the surface performance of the processed workpiece can not be influenced by cutting force.
Description
Technical field
The present invention relates to electrical-chemistry method field, especially a kind of method in electrical-chemistry method elliposoidal ring hole.
Background technology
Progress and scientific and technological development with society, in the manufacturings such as modern aerospace, automobile, lathe, for
Stress is heated than more serious part during use, in order to mitigate due to cooling down the part deformation not brought thoroughly, extends it
Service life, more and more using not rounded odd-shaped cross section, i.e., cross section is not circular, but ellipse, variation ellipse, cycloid etc. are non-
Toroidal.Such as the noncircular pin hole design generally used in modern piston manufacturing industry, can avoid producing under very high combustion pressure
Raw elastic deformation, mitigate pin-and-hole on the inside of stress concentration the problem of so that piston obtain better performance.In addition, sent out in aviation
Noncircular raceway is used in motivation roller bearing, the skidding that can effectively solve roller during high speed light loading, is avoided to engine
The influence of damaging property.And these not rounded special-shaped sections machining accuracy, skill are processed to manufacture because its complicated shape
Art proposes very high requirement.
At present, the processing method of not rounded special-shaped section is the footpath of gyration by main shaft and cutting tool mostly
Realized to the synthesis of stretching motion.But variety of problems in terms of actual processing then be present, be primarily due in revolution boring bar
Upper installation high frequency sound microfeed structure and control drive device are small there is installing space, implement control and measurement difficulty
Problem.
The content of the invention
In order to overcome the shortcomings of the prior art, the invention provides a kind of side in electrical-chemistry method elliposoidal ring hole
Method, it is to use the power on metal material under state the principle of electrochemical dissolution occurs to carry out, using the tool-electrode specially designed,
The processing of small-bore surface elliposoidal micro-structural is realized in the swing of control process time, machining voltage, tool-electrode.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of method in electrical-chemistry method elliposoidal ring hole, the described method comprises the following steps：
1) tool-electrode A preparation：
By the surface of a smooth cylinder wire or metal tube along the circumferential direction by annular groove is made at equal intervals, then
Insulating materials is coated in annular groove and is solidified, forms metallic conduction portion and the spaced laemodipodiform instrument of insulation division
Electrode A；
2) tool-electrode B preparation：
By the surface of a smooth cylinder wire or metal tube, the plane that is parallel to each other is made in front and rear sides vertically,
Axially then the left and right sides applies respectively by arc groove is made at equal intervals in the parallel plane of arc groove and front and rear sides
Cover insulating materials and solidified, it is spaced to form front and rear sides insulation, the metallic conduction portion of the left and right sides and insulation division
Tool-electrode B；Wherein, the interval between the two neighboring arc groove on tool-electrode B with it is two neighboring on tool-electrode A
Spacing between annular groove is identical, width up and down and the arc groove on tool-electrode B of the annular groove on tool-electrode A
Width up and down it is identical, the horizontal stroke in the radius of the cross section in tool-electrode B metallic conduction portion and tool-electrode A metallic conduction portion
The radius in section is identical；
3) processing in circular ring hole:
First tool-electrode A is fed into unthreaded hole pre-processed on workpiece to be processed, then by electrolyte along work
The gap between unthreaded hole inwall in tool electrode A and workpiece to be processed is flowed from bottom to top, and workpiece to be processed then is connect into power supply
Positive pole, tool-electrode A connect power cathode, the workpiece to be processed and the tool-electrode A that are surrounded in electrolyte metallic conduction portion it
Between form Electrolyzed Processing area, workpiece to be processed surface is removed under electric field action, forms circular ring hole；
4) processing in elliposoidal ring hole：
Tool-electrode A in step 3) is taken out, tool-electrode B, and tool-electrode B gold are inserted in circular ring hole
It is corresponding in the axial direction to belong to conductive part, insulation division and tool-electrode A metallic conduction portion, insulation division, meanwhile, tool-electrode B
The insulating barriers of front and rear sides front and rear arrange；Machining voltage and the conduction time of electrolyte are set, is started building by machine tool chief axis band
Having electrode B, circumferentially reciprocally swinging, the internal face that circular ring hole is in Electrolyzed Processing area obtain two by set angle
Secondary Electrolyzed Processing, circular ring hole gradually form elliposoidal ring hole, and after the conduction time of setting is reached, circular ring hole is complete
Holotype is into elliposoidal ring hole；
Wherein, the set angle of tool-electrode B circumferentially reciprocally swinging is 30 °~60 °.
Further, in the preparation of step 1) the tool-electrode A；
By the surface of a smooth cylinder wire or metal tube along the circumferential direction by one layer of insulating cement of coating at equal intervals, and
Solidified under ultraviolet light, it is 10%NaNO to be then immersed in mass concentration3Electrolyte in carry out electrolytic etching,
The cylindrical metal silk or metal pipe joint positive source of insulating cement, mass concentration 10%NaNO will be coated3Iron in electrolyte
Piece connects power cathode, after electrolytic etching reaches setting time, takes out cylindrical metal silk or metal tube, so that cylinder gold
The metal material of category silk or metal tube surface exposed part obtains corroding groove-like in a ring, then by coat before one layer absolutely
Edge glue removes the metallic conduction portion to form tool-electrode A, is finally uniformly coated in the annular groove being corroded containing 15%SiC's
Photosensitive resin is simultaneously solidified under ultraviolet light, and the photosensitive resin layer in annular groove forms tool-electrode A insulation division,
So as to which tool-electrode A be made.
Further, in the preparation of step 2) the tool-electrode B；
By one layer of insulating cement of the surface of a smooth cylinder wire or metal tube exceptionally straight coating in the left and right sides vertically simultaneously
Solidified under ultraviolet light, it is 10%NaNO then to be invaded the mass concentration prepared3Electrolyte in, will apply
Cover the cylindrical metal silk or metal pipe joint positive source of insulating cement, mass concentration 10%NaNO3Iron plate in electrolyte connects
Power cathode, after electrolytic etching to setting time, take out cylindrical metal silk or metal tube so that cylindrical metal silk or
The metal material of metal tube surface exposed part is corroded, and both sides form the plane being parallel to each other axially back and forth for it, and flat
15%SiC photosensitive resin is coated on face, and is solidified under ultraviolet light, obtains the metal of both sides insulation axially back and forth
Silk or metal tube；
Then, respectively by one layer of coating at equal intervals at left and right sides of the wire of front and rear sides insulation or the axial direction of metal tube
Insulating cement, and solidified under ultraviolet light, it is 10%NaNO that mass concentration is dipped in after solidification3Enter in electrolyte
Row electrolytic etching, the cylindrical metal silk or metal pipe joint positive source that front and rear sides are insulated, mass concentration 10%NaNO3
Iron plate in electrolyte connects power cathode, after electrolytic etching reaches setting time, wire or metal tube is taken out, so that golden
The metal material of category silk or metal tube surface exposed part obtains corroding curved groove-like, then by coat before one layer absolutely
Edge glue removes the metallic conduction portion to form tool-electrode B, is finally uniformly coated in the arc groove being corroded containing 15%SiC's
Photosensitive resin is simultaneously solidified under ultraviolet light, and the photosensitive resin layer in arc groove forms tool-electrode B insulation division,
So as to which tool-electrode B be made.
The main beneficial effect of the present invention is：Circumferencial direction on-circular cross-section cooling hole machined can be achieved；Processing technology is grasped
Make simple；In the case of array electrode, porous processing, efficiency high can be disposably carried out；Machining accuracy is higher, can process aperture chi
Very little small, workpieces processing surface property will not be influenceed by cutting force.
Brief description of the drawings
Fig. 1 a are the structural representations of the surface wire of groove-like in a ring.
Fig. 2 a are the structural representations that tool-electrode A is made in Fig. 1 a.
Fig. 1 b are the structural representations of the surface metal tube of groove-like in a ring.
Fig. 2 b are the structural representations that tool-electrode A is made in Fig. 1 b.
Fig. 3 is that both sides are corroded as plane, axially the left and right sides is corroded as the wire of arc groove axially back and forth
Structural representation.
Fig. 4 is the structural representation of tool-electrode B made of Fig. 3.
Fig. 5 is the Electrolyzed Processing schematic diagram in elliposoidal ring hole.
Fig. 6 is the sectional side elevation in the circular ring hole after being processed by tool-electrode A.
Fig. 7 is Fig. 6 front view.
Fig. 8 is tool-electrode B in the schematic diagram of circular ring hole periodically circuit oscillation vertically.
Fig. 9 is the sectional side elevation in elliposoidal ring hole.
Figure 10 is Fig. 9 front view.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Reference picture 1a~Figure 10, a kind of method in electrical-chemistry method elliposoidal ring hole, the described method comprises the following steps：
2) tool-electrode A preparation：
By the surface of a smooth cylinder wire or metal tube along the circumferential direction by annular groove is made at equal intervals, then
Insulating materials is coated in annular groove and is solidified, forms metallic conduction portion and the spaced laemodipodiform instrument of insulation division
Electrode A；
3) tool-electrode B preparation：
By the surface of a smooth cylinder wire or metal tube, the plane that is parallel to each other is made in front and rear sides vertically,
Axially then the left and right sides applies respectively by arc groove is made at equal intervals in the parallel plane of arc groove and front and rear sides
Cover insulating materials and solidified, it is spaced to form front and rear sides insulation, the metallic conduction portion of the left and right sides and insulation division
Tool-electrode B；Wherein, the interval between the two neighboring arc groove on tool-electrode B with it is two neighboring on tool-electrode A
Spacing between annular groove is identical, width up and down and the arc groove on tool-electrode B of the annular groove on tool-electrode A
Width up and down it is identical, the horizontal stroke in the radius of the cross section in tool-electrode B metallic conduction portion and tool-electrode A metallic conduction portion
The radius in section is identical；
3) processing in circular ring hole:
First tool-electrode A is fed into unthreaded hole pre-processed on workpiece to be processed 6, then by electrolyte along work
The gap between unthreaded hole inwall in tool electrode A and workpiece to be processed 6 is flowed from bottom to top, and workpiece to be processed then is connect into power supply
Positive pole, tool-electrode A connect power cathode, the workpiece to be processed 6 and the tool-electrode A that are surrounded in electrolyte metallic conduction portion it
Between form Electrolyzed Processing area, the surface of workpiece to be processed 6 is removed under electric field action, forms circular ring hole；
4) processing in elliposoidal ring hole：
Tool-electrode A in step 3) is taken out, tool-electrode B, and tool-electrode B gold are inserted in circular ring hole
It is corresponding in the axial direction to belong to conductive part, insulation division and tool-electrode A metallic conduction portion, insulation division, meanwhile, tool-electrode B
The insulating barriers of front and rear sides front and rear arrange；Machining voltage and the conduction time of electrolyte are set, is started building by machine tool chief axis band
Having electrode B, circumferentially reciprocally swinging, the internal face that circular ring hole is in Electrolyzed Processing area obtain two by set angle
Secondary Electrolyzed Processing, circular ring hole gradually form elliposoidal ring hole, and after the conduction time of setting is reached, circular ring hole is complete
Holotype is into elliposoidal ring hole；
Wherein, the set angle of tool-electrode B circumferentially reciprocally swinging is 30 °~60 °.
Further, in the preparation of step 1) the tool-electrode A；
By the surface of a smooth cylinder wire or metal tube along the circumferential direction by one layer of insulating cement of coating at equal intervals, and
Solidified under ultraviolet light, it is 10%NaNO to be then immersed in mass concentration3Electrolyte in carry out electrolytic etching,
The cylindrical metal silk or metal pipe joint positive source of insulating cement, mass concentration 10%NaNO will be coated3Iron in electrolyte
Piece connects power cathode, after electrolytic etching reaches setting time, takes out cylindrical metal silk or metal tube, so that cylinder gold
The metal material of category silk or metal tube surface exposed part obtains corroding groove-like in a ring, then by coat before one layer absolutely
Edge glue removes the metallic conduction portion 1 to form tool-electrode A, and finally uniformly coating contains 15%SiC in the annular groove 2 being corroded
Photosensitive resin and solidified under ultraviolet light, photosensitive resin layer 3 in annular groove 2 forms the exhausted of tool-electrode A
Edge, so as to which tool-electrode A be made.
Further, in the preparation of step 2) the tool-electrode B；
By one layer of insulating cement of the surface of a smooth cylinder wire or metal tube exceptionally straight coating in the left and right sides vertically simultaneously
Solidified under ultraviolet light, it is 10%NaNO then to be invaded the mass concentration prepared3Electrolyte in, will apply
Cover the cylindrical metal silk or metal pipe joint positive source of insulating cement, mass concentration 10%NaNO3Iron plate in electrolyte connects
Power cathode, after electrolytic etching to setting time, take out cylindrical metal silk or metal tube so that cylindrical metal silk or
The metal material of metal tube surface exposed part is corroded, and both sides form the plane 4 being parallel to each other axially back and forth for it, and flat
15%SiC photosensitive resin is coated on face 4, and is solidified under ultraviolet light, obtains the gold of both sides insulation axially back and forth
Belong to silk or metal tube；
Then, respectively by one layer of coating at equal intervals at left and right sides of the wire of front and rear sides insulation or the axial direction of metal tube
Insulating cement, and solidified under ultraviolet light, it is 10%NaNO that mass concentration is dipped in after solidification3Enter in electrolyte
Row electrolytic etching, the cylindrical metal silk or metal pipe joint positive source that front and rear sides are insulated, mass concentration 10%NaNO3
Iron plate in electrolyte connects power cathode, after electrolytic etching reaches setting time, wire or metal tube is taken out, so that golden
The metal material of category silk or metal tube surface exposed part obtains corroding curved groove-like, then by coat before one layer absolutely
Edge glue removes the metallic conduction portion to form tool-electrode B, and finally uniformly coating contains 15%SiC in the arc groove 5 being corroded
Photosensitive resin and solidified under ultraviolet light, photosensitive resin layer 3 in arc groove 5 forms the exhausted of tool-electrode B
Edge, so as to which tool-electrode B be made.
Certainly wherein be corroded wire/metal tube of groove-like in a ring of surface can be obtained using other processing methods
, such as 3D printing, turnery processing, the insulating materials such as photosensitive resin further then are coated to obtain instrument at annular groove
Electrode A；Both sides are corroded as plane axially back and forth, axially be corroded can for wire/metal tube of arc groove 5 for the left and right sides
To be obtained using other processing methods, such as 3D printing, turnery processing, then further in both sides axially back and forth, arc groove
Place coats the insulating materials such as photosensitive resin to obtain tool-electrode B.
The present invention Electrolyzed Processing principle be：
Electrolyte flows from bottom to top along gap between tool-electrode A and the unthreaded hole side wall of workpiece to be processed 6, workpiece to be processed
6 connect positive source, and tool-electrode A connects negative pole, the metallic conduction in the workpiece to be processed 6 that electrolyte surrounds with tool-electrode A
Electrolyzed Processing area is formed between portion, workpiece surface material is removed under electric field action, is distributed according to tool-electrode A surrounding electric fields
Symmetrical arc is presented in rule, face tool-electrode A metallic conduction portion electric-field intensity, therefore exposed in tool-electrode A negative electrodes
Middle rule fast, both sides are slow is presented in workpiece surface material corrosion speed near metal material, and final unthreaded hole is processed to justify
Shape ring hole is that the cross section in ring hole is circular cross-section 8；Tool-electrode A is taken out afterwards, work is inserted in corresponding position
Have electrode B 10, carry out re-electrolysis processing again, both sides are coated with insulating materials containing 15% forwards, backwards due to tool-electrode B axle
SiC photosensitive resin so that only subregion obtains electrolytic etching again on the inside of machined circular section ring hole, in instrument electricity
During the B10 Electrolyzed Processings of pole, by controlling machine tool chief axis to drive tool-electrode B10 to carry out certain angle, such as set angle
For 30 °~60 ° reciprocally swingings, while certain machining voltage and conduction time are set, control the circular ring hole to be in electrolysis
The internal face of processing district is further corroded, and circular ring hole gradually forms elliposoidal ring hole, elliposoidal ring hole
Cross section is ellipse 9.
Example one：
1st, the preparation of tool-electrode.
Tool-electrode 7 includes tool-electrode A and tool-electrode B；
It is prepared by tool-electrode A：Take an a diameter of 1.5mm, long 60mm cylindrical metal silk, by certain same distance i.e. etc.
Interval such as 5mm, is along the circumferential direction uniformly solidified under coating insulating cement and ultraviolet light, then is fixed on lathe,
Feeding is immersed in the NaNO that mass concentration is 10%3In electrolyte, the cylindrical metal silk for coating insulating cement is connect into positive source,
Mass concentration is 10% NaNO3Iron plate in electrolyte connects power cathode, applies voltage 8V, metal after working time 5min
Silk takes out, and removes the insulating cement of wire surface, and the metallic conduction portion for forming tool-electrode A obtains tool-electrode A matrixes；So
The photosensitive resin containing 15%SiC is coated in the annular groove of the corrosion of tool-electrode A matrixes afterwards, is put to ultraviolet
After solidifying 3min under photo solidification machine, tool-electrode A insulation division is formed, that is, prepares tool-electrode A.
It is prepared by tool-electrode B：An a diameter of 1.5mm is taken, long 60mm cylindrical metal silk, axially the left and right sides is taut along it
Straight coating insulating cement simultaneously solidifies, then wire is fixed on lathe, is fed into the 10%NaNO prepared3In electrolyte, it will apply
Cover the cylindrical metal silk or metal pipe joint positive source of insulating cement, mass concentration 10%NaNO3Iron plate in electrolyte connects
Power cathode, operating voltage 8V is added, wire is taken out after 5 minutes working times；In the front and rear sides that wire erosion is crossed
Face coats the photosensitive resin containing 15%SiC, and solidifies 3min under uv cure machine, is taken out after its cooling by equal intervals such as
5mm along the circumferential direction uniformly coats insulating cement and solidified, and it is 10%NaNO to be immersed in mass concentration for the second time3Carried out in electrolyte
Electrolytic etching, because the front and rear sides of wire have the protection of insulating photosensitive resin, only corrode wire in electrolytic process
Metal exposed part gradually forms arc groove, applies voltage 8V, and after 5 minutes working times, taking-up wire is simultaneously recessed in arc
Uniformly photosensitive resin of the coating containing 15%SiC, and instrument electricity is prepared after solidifying 3min under uv cure machine in groove
Pole B.
2nd, the processing in elliposoidal ring hole.
Aperture 2mm is processed on workpiece to be processed 6 in advance, hole depth 60mm unthreaded hole is smooth bore, by work to be processed
Part 6 is fixed in Working table clamp, mass concentration 15%NaNO3Electrolyte flows into from bottom to top from smooth bore；First will
Tool-electrode A is fed into the smooth bore on workpiece to be processed 6, and tool-electrode A connects power cathode, and workpiece to be processed 6 connects electricity
Source positive pole, application voltage are 10V, process time 10min, take out tool-electrode A after process finishing；Following tool-electrode
B10 is fed into same position and carries out re-electrolysis processing again, and application voltage is 10V, and process time 10min, wherein instrument are electric
The pole B insulating planar of both sides axially back and forth is front and rear arrangement, the left and right sides of tool-electrode B10 conductive part axially
On.Tool-electrode B10 makees circumferential reciprocally swinging before and after 60 ° of angles in process, and elliposoidal ring is obtained after process finishing
Hole.
Claims (3)
- A kind of 1. method in electrical-chemistry method elliposoidal ring hole, it is characterised in that：It the described method comprises the following steps：1) tool-electrode A preparation：By the surface of a smooth cylinder wire or metal tube along the circumferential direction by annular groove is made at equal intervals, then in ring Insulating materials is coated in connected in star and is solidified, forms metallic conduction portion and the spaced laemodipodiform tool-electrode of insulation division A；2) tool-electrode B preparation：By the surface of a smooth cylinder wire or metal tube, the plane that is parallel to each other is made in front and rear sides vertically, in axial direction Then the left and right sides coats absolutely respectively by arc groove is made at equal intervals in the parallel plane of arc groove and front and rear sides Edge material is simultaneously solidified, and forms front and rear sides insulation, metallic conduction portion and the spaced instrument of insulation division of the left and right sides Electrode B；Wherein, the interval between the two neighboring arc groove on tool-electrode B and the two neighboring annular on tool-electrode A Spacing between groove is identical, and the width up and down of the annular groove on tool-electrode A is upper with the arc groove on tool-electrode B Lower width is identical, the radius of the cross section in tool-electrode B metallic conduction portion and the cross section in tool-electrode A metallic conduction portion Radius it is identical；3) processing in circular ring hole:First tool-electrode A is fed into unthreaded hole pre-processed on workpiece to be processed, it is then that electrolyte is electric along instrument The gap between unthreaded hole inwall on pole A and workpiece to be processed is flowed from bottom to top, and workpiece to be processed then is connect into positive source, Tool-electrode A connects power cathode, is formed between the workpiece to be processed surrounded in electrolyte and tool-electrode A metallic conduction portion Electrolyzed Processing area, workpiece to be processed surface are removed under electric field action, form circular ring hole；4) processing in elliposoidal ring hole：Tool-electrode A in step 3) is taken out, tool-electrode B is inserted in circular ring hole, and tool-electrode B metal is led Electric portion, insulation division and tool-electrode A metallic conduction portion, insulation division are corresponding in the axial direction, meanwhile, before tool-electrode B The insulating barrier of both sides is front and rear afterwards arranges；Machining voltage and the conduction time of electrolyte are set, passes through machine tool chief axis band power driven tools electricity By set angle, circumferentially reciprocally swinging, the internal face that circular ring hole is in Electrolyzed Processing area obtain secondary electricity to pole B Solution processing, circular ring hole gradually forms elliposoidal ring hole, after the conduction time of setting is reached, the circular complete shape in ring hole Into elliposoidal ring hole；Wherein, the set angle of tool-electrode B circumferentially reciprocally swinging is 30 °~60 °.
- A kind of 2. method in electrical-chemistry method elliposoidal ring hole as claimed in claim 1, it is characterised in that：The step 1) In tool-electrode A preparation；By the surface of a smooth cylinder wire or metal tube along the circumferential direction by one layer of insulating cement of coating, and in purple at equal intervals Solidified under outer light irradiation, it is 10%NaNO to be then immersed in mass concentration3Electrolyte in carry out electrolytic etching, will apply Cover the cylindrical metal silk or metal pipe joint positive source of insulating cement, mass concentration 10%NaNO3Iron plate in electrolyte connects Power cathode, after electrolytic etching reaches setting time, cylindrical metal silk or metal tube are taken out, so that cylindrical metal silk Or the metal material of metal tube surface exposed part obtains corroding groove-like in a ring, then by coat before one layer of insulating cement The metallic conduction portion for forming tool-electrode A is removed, is finally uniformly coated in the annular groove being corroded containing the photosensitive of 15%SiC Resin is simultaneously solidified under ultraviolet light, and the photosensitive resin layer in annular groove forms tool-electrode A insulation division, so as to Tool-electrode A is made.
- A kind of 3. method in electrical-chemistry method elliposoidal ring hole as claimed in claim 1, it is characterised in that：The step 2) In tool-electrode B preparation；By the surface of a smooth cylinder wire or metal tube exceptionally straight coating one layer of insulating cement and in purple in the left and right sides vertically Solidified under outer light irradiation, it is 10%NaNO then to be invaded the mass concentration prepared3Electrolyte in, will coating it is exhausted The cylindrical metal silk or metal pipe joint positive source of edge glue, mass concentration 10%NaNO3Iron plate in electrolyte connects power supply Negative pole, after electrolytic etching to setting time, cylindrical metal silk or metal tube are taken out, so that cylindrical metal silk or metal The metal material of pipe surface exposed part is corroded, and both sides form the plane being parallel to each other axially back and forth for it, and in the plane Coat 15%SiC photosensitive resin, and solidified under ultraviolet light, obtain the wire of both sides insulation axially back and forth or Metal tube；Then, respectively by one layer of insulation of coating at equal intervals at left and right sides of the wire of front and rear sides insulation or the axial direction of metal tube Glue, and solidified under ultraviolet light, it is 10%NaNO that mass concentration is dipped in after solidification3Electricity is carried out in electrolyte Solution corrosion, the cylindrical metal silk or metal pipe joint positive source that front and rear sides are insulated, mass concentration 10%NaNO3Electrolysis Iron plate in liquid connects power cathode, after electrolytic etching reaches setting time, wire or metal tube is taken out, so that wire Or the metal material of metal tube surface exposed part obtains corroding curved groove-like, then by coat before one layer of insulating cement The metallic conduction portion for forming tool-electrode B is removed, is finally uniformly coated in the arc groove being corroded containing the photosensitive of 15%SiC Resin is simultaneously solidified under ultraviolet light, and the photosensitive resin layer in arc groove forms tool-electrode B insulation division, so as to Tool-electrode B is made.
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| US6200439B1 (en) * | 1998-11-05 | 2001-03-13 | General Electric Company | Tool for electrochemical machining |
| CN1943951A (en) * | 2006-10-20 | 2007-04-11 | 南京航空航天大学 | Electrolytic processing method for ribbed deep small holes and special tool cathode |
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