CN106735633B - A kind of double shrouded wheel electric discharge machining apparatus and processing method - Google Patents
A kind of double shrouded wheel electric discharge machining apparatus and processing method Download PDFInfo
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- CN106735633B CN106735633B CN201611208198.8A CN201611208198A CN106735633B CN 106735633 B CN106735633 B CN 106735633B CN 201611208198 A CN201611208198 A CN 201611208198A CN 106735633 B CN106735633 B CN 106735633B
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- electrode
- double shrouded
- shrouded wheel
- preprocessing
- roughing
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- 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
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- 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
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/10—Working turbine blades or nozzles
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The present invention relates to Impeller Machining technical field more particularly to a kind of double shrouded wheel electric discharge machining apparatus and processing methods.Double shrouded wheel electric discharge machining apparatus includes for installing the impeller installs fixture of double shrouded wheel to be processed, preprocessing electrode installs fixture and multiple preprocessing electrodes；Impeller installs fixture is equipped with installation axle, and double shrouded wheel to be processed is equipped with center positioning hole, and double shrouded wheel to be processed is arranged on the mounting shaft by center positioning hole；Electrode installs fixture includes first electrode mounting base, and multiple preprocessing electrodes are connect with first electrode mounting base, and multiple preprocessing electrodes circumferentially arrange, and the number of preprocessing electrode is identical as the runner number of double shrouded wheel to be processed；And each preprocessing electrode is corresponding with a flow channel entry point of double shrouded wheel to be processed when processing；Further include the first driving mechanism, moves along a straight line for driving electrodes installs fixture along Z axis, Z axis is the extending direction of installation axle.Processing efficiency is improved, ensure that machining accuracy.
Description
Technical field
The present invention relates to Impeller Machining technical field more particularly to a kind of double shrouded wheel electric discharge machining apparatus and processing sides
Method.
Background technique
Double shrouded wheel obtains increasingly in the advanced turbomachinery that the fields such as aerospace engine, petrochemical industry use
More applications.The structure of double shrouded wheel is extremely complex, processing accessibility is poor, in addition mostly using high temperature alloy or titanium alloy etc. are difficult to add
Work material, traditional machining are difficult to realize the processing of degree of precision.Electrical discharge machining utilizes pulse feature between tool and workpiece
Spark discharge carrys out the extra material of ablation, has many advantages, such as that precision is high, adaptability for materials is wide.Existing double shrouded wheel electrical spark working
Work technology is processed by main tapping band moving electrode, and processing efficiency is low.Therefore, in existing sinking EDM condition
Under, how processing efficiency and machining accuracy are improved, there is realistic meaning to the processing quality for improving double shrouded wheel.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is to solve each runner of double shrouded wheel in the prior art individually to process, processing effect
The low problem of rate.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of double shrouded wheel electric discharge machining apparatus, including are used for
The impeller installs fixture, preprocessing electrode installs fixture and multiple preprocessing electrodes of double shrouded wheel to be processed are installed；The impeller
Installs fixture is equipped with installation axle, and the double shrouded wheel to be processed is equipped with center positioning hole, and the double shrouded wheel to be processed passes through
The center positioning hole is arranged on the mounting shaft；The electrode installs fixture includes first electrode mounting base, multiple pre-add
Work electrode is connect with the first electrode mounting base, and multiple preprocessing electrodes circumferentially arrange, the number of preprocessing electrode
Mesh is identical as the runner number of double shrouded wheel to be processed；And each preprocessing electrode and the enclosed leaf to be processed when processing
One flow channel entry point of wheel is corresponding；It further include the first driving mechanism, for driving the electrode installs fixture to transport along Z axis straight line
Dynamic, the Z axis is the extending direction of the installation axle.
According to the present invention, each preprocessing electrode is provided with cooling passage.
According to the present invention, the cooling passage of the preprocessing electrode is equipped with an inlet and two liquid outlets, described
Inlet is set to the side of the preprocessing electrode far from the center of circle, and two liquid outlets are respectively arranged on and are equipped with the inlet
The adjacent two sides in side.
According to the present invention, the impeller installs fixture includes pedestal and the supporting table on the base top surface, institute
The diameter for stating supporting table is less than the diameter of the pedestal；The installation axle is set to the one side that the supporting table deviates from the pedestal,
One end that the double shrouded wheel to be processed is relatively large in diameter is equipped with boss, and when installation, the boss was connected to the supporting table away from institute
State the one side of pedestal；The positioning plate being sheathed on the outside of the supporting table, the radial direction of the mounting plate are further fixed on the pedestal
It is equipped with the threaded hole of multiple perforation mounting plates, is equipped with adjusting screw in the threaded hole, and close in the threaded hole
One end of the boss of the double shrouded wheel to be processed is equipped with soft adjustment column, the outer edge phase of the adjustment column and the boss
Contact.
According to the present invention, the adjustment column is made of metallic copper.
According to the present invention, the top of the installation axle is equipped with external screw thread, and the external thread sleeve is equipped with locking nut, for solid
The fixed double shrouded wheel to be processed.
According to the present invention, the first electrode mounting base is disc, and being circumferentially with for the first electrode mounting base is more
A mounting hole, the mounting hole are equipped with locating slot, the fixing end and the installation of the preprocessing electrode close to the side in the center of circle
Hole matches, and the fixing end of the preprocessing electrode is equipped with locating piece, and the mounting hole is provided with top far from the side in the center of circle
Silk, for fixing the preprocessing electrode and the first electrode mounting base.
It according to the present invention, further include entrance roughing electrode, outlet roughing electrode and the second driving mechanism, the electrode
Installs fixture further includes second electrode mounting base, the entrance roughing electrode and outlet roughing electrode use when with it is described
The connection of second electrode mounting base, the entrance roughing electrode and outlet roughing electrode form runner for roughing；It is described
Second driving mechanism is transported for driving the double shrouded wheel to be processed to rotate around the installation axle, and along X-axis and Y-axis straight line
It is dynamic；First driving mechanism is also used to that the electrode installs fixture is driven to rotate around B axle, and the B axle is parallel with X-axis.
According to the present invention, the entrance roughing electrode and the outlet roughing electrode are all made of detachable electrode.
A kind of double shrouded wheel electric discharge machining method provided by the invention, comprising the following steps:
S1, using preprocessing electrode preprocessing flow channel entry point；
S2 is connected to flow channel entry point with runner exit using outlet roughing electrode roughing runner exit；
S3, using entrance roughing electrode roughing flow channel entry point；
S4, semifinishing runner；
S5 finishes runner.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that compared with prior art
(1) double shrouded wheel electric discharge machining apparatus provided in an embodiment of the present invention includes that can install multiple preprocessing electrodes
Electrode installs fixture, multiple flow channel entry points of double shrouded wheel can obtain by multiple preprocessing electrode time processings, significantly
Improve processing efficiency.
(2) embodiment of the present invention is after having carried out the roughing of flow channel entry point preprocessing and runner exit, the runner of impeller
It is got through, coolant liquid can fill up rapidly runner, and cooling and the chip removal effect of coolant liquid are substantially improved.Then carry out flow channel entry point
Roughing and runner entirety semifinishing and finishing, improve runner processing precision.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of double shrouded wheel electric discharge machining apparatus preprocessing state provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the impeller installs fixture provided in an embodiment of the present invention for being equipped with double shrouded wheel；
Fig. 3 is the structural schematic diagram of first electrode mounting base in the present embodiment；
Fig. 4 is the structural schematic diagram of preprocessing electrode in the present embodiment；
Fig. 5 is that the structure of the double shrouded wheel electric discharge machining apparatus runner exit rough turn condition provided in the present embodiment is shown
It is intended to；
Fig. 6 is that the structure of the double shrouded wheel electric discharge machining apparatus flow channel entry point rough turn condition provided in the present embodiment is shown
It is intended to；
Fig. 7 is the structural schematic diagram of the present embodiment middle outlet roughing electrode；
Fig. 8 is the structural schematic diagram of entrance roughing electrode in the present embodiment；
Fig. 9 is the top view of double shrouded wheel after processing is completed in the present embodiment；
Figure 10 is sectional view along A-A in Fig. 9.
In figure: 1: double shrouded wheel；11: flow channel entry point；12: runner exit；13: boss；2: impeller installs fixture；21: peace
Fill axis；22: pedestal；23: supporting table；24: positioning plate；25: adjusting screw；26: adjustment column；27: locking nut；3: electrode installation
Fixture；31: first electrode mounting base；311: mounting hole；312: locating slot；313: jackscrew；4: preprocessing electrode；41: locating piece；
42: inlet；43: liquid outlet；5: second electrode mounting base；6: entrance roughing electrode；61: entrance roughing sub-electrode；7:
Export roughing electrode；71: outlet roughing sub-electrode；8: connecting rod；9: turntable.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As Figure 1-Figure 4,1 electric discharge machining apparatus of double shrouded wheel provided in an embodiment of the present invention, including for installing
Impeller installs fixture 2, preprocessing electrode installs fixture 3 and the multiple preprocessing electrodes 4 of double shrouded wheel 1 to be processed；Impeller installation
Fixture 2 is equipped with installation axle 21, and double shrouded wheel 1 to be processed is equipped with center positioning hole, and double shrouded wheel to be processed 1 passes through centralized positioning
Hole is set in installation axle 21；Electrode installs fixture 3 includes first electrode mounting base 31, and multiple preprocessing electrodes 4 are with first
Electrode mounting base 31 connects, and multiple preprocessing electrodes 4 circumferentially arrange, the number of preprocessing electrode 4 and double shrouded wheel 1 to be processed
Runner number it is identical；And each preprocessing electrode 4 is opposite with a flow channel entry point 11 of double shrouded wheel 1 to be processed when processing
It answers；Further include the first driving mechanism, moves along a straight line for driving electrodes installs fixture 3 along Z axis, Z axis is the extension of installation axle 21
Direction.In use, multiple preprocessing electrodes 4 to be moved to the surface of double shrouded wheel 1 to be processed, driven by the first driving mechanism
Electrode installs fixture 3 moves along a straight line downwards along Z axis, and multiple preprocessing electrodes 4 move separately down, removes 1 runner of double shrouded wheel
Most of material at entrance 11, the inlet simultaneous processing of multiple runners, improves processing efficiency.
1 electric discharge machining apparatus of double shrouded wheel provided in an embodiment of the present invention includes that can install multiple preprocessing electrodes 4
Electrode installs fixture 3, multiple flow channel entry points 11 of double shrouded wheel 1 can obtain by multiple 4 time processings of preprocessing electrode, show
It lands and improves processing efficiency.
Further, as shown in figure 4, each preprocessing electrode 4 is provided with cooling passage in the present embodiment.Specifically
, the cooling passage of preprocessing electrode 4 is equipped with an inlet 42 in the present embodiment and two liquid outlets 43, inlet 42 are set
In side of the preprocessing electrode 4 far from the center of circle, two liquid outlets 43 are respectively arranged on two adjacent with the side of inlet 42 is equipped with
Side.Since in preprocessing, excision material is more, generation heat is larger, can be played preferably by the cooling passage of setting
Cooling effect.
Further, as shown in Fig. 2, impeller installs fixture 2 includes pedestal 22 and pushes up set on pedestal 22 in the present embodiment
Supporting table 23 on face, the diameter of supporting table 23 are less than the diameter of pedestal 22；Installation axle 21 is set to supporting table 23 and deviates from pedestal 22
One side, one end that double shrouded wheel 1 to be processed is relatively large in diameter is equipped with boss 13, and boss 13 is connected to supporting table 23 and deviates from when installation
The one side of pedestal 22；Preferably, the top of installation axle 21 is equipped with external screw thread in the present embodiment, and external thread sleeve is equipped with locking nut
27, for fixing double shrouded wheel 1 to be processed, the positioning in 1 vertical direction of double shrouded wheel is total to by locking nut 27 and supporting table 23
With completion.The positioning plate 24 for being sheathed on 23 outside of supporting table is further fixed on pedestal 22, mounting plate is radially equipped with multiple pass through
The threaded hole of logical mounting plate, threaded hole is interior to be equipped with adjusting screw 25, and close to the boss 13 of double shrouded wheel 1 to be processed in threaded hole
One end be equipped with soft adjustment column 26, adjustment column 26 is in contact with the outer edge of boss 13.Preferably, multiple in the present embodiment
Circumferential array arrangement of the threaded hole along installation.Further, in this embodiment adjustment column 26 is made of metallic copper.Adjustment column 26
It is also possible to the soft material composition such as nylon plastic(s), passes through the adjusting screw 25 and the adjustable enclosed leaf of adjustment column 26 of setting
The concentricity of wheel 1 and installation axle 21, ensure that concentricity between the two, also, soft adjustment column 26 will not be to impeller
Surface causes to damage, and ensure that the complete of 1 outer surface of double shrouded wheel.
Further, as shown in figure 3, first electrode mounting base 31 is disc, first electrode mounting base in the present embodiment
31 are circumferentially with multiple mounting holes 311, and mounting hole 311 is equipped with locating slot 312 close to the side in the center of circle, preprocessing electrode 4
Fixing end is matched with mounting hole 311, and the fixing end of preprocessing electrode 4 is equipped with locating piece 41, and mounting hole 311 is far from the center of circle
Side is provided with jackscrew 313, for fixing preprocessing electrode 4 and first electrode mounting base 31.Pacified by setting in first electrode
31 locating slot 312 of dress seat and the locating piece 41 that 4 fixing end of preprocessing electrode is arranged in realize the accurate fixed of preprocessing electrode 4
Position, ensure that the precision of processing.
It further, as shown in Figure 5-Figure 8, further include entrance roughing electrode 6, outlet roughing electrode in the present embodiment
7 and second driving mechanism, electrode installs fixture 3 further includes second electrode mounting base 5, entrance roughing electrode 6 and outlet it is thick plus
Work electrode 7 is using the connection of Shi Junyu second electrode mounting base 5, entrance roughing electrode 6 and outlet roughing electrode 7 for slightly adding
Work forms runner；Second driving mechanism is used to that double shrouded wheel 1 to be processed to be driven to rotate around installation axle 21, and straight along X-axis and Y-axis
Line movement；First driving mechanism is also used to driving electrodes installs fixture 3 and rotates around B axle, and B axle is parallel with X-axis, i.e. hangs down in Fig. 5
It is directly the extending direction of B axle in the direction of paper.Electrode installs fixture 3 as shown in Figure 5 further includes connecting rod 8 and turntable 9, is turned
The rotation of disk 9 drives connecting rod 8 to rotate around B axle.Entrance roughing electrode 6, the outlet roughing electrode 7 of setting are respectively used to flow
The roughing of flow channel entry point 11 roughing and runner exit 12 after the completion of 11 preprocessing of road entrance, preliminarily forms each runner.
It is preferential in process first to get through runner using outlet 7 export processing of roughing electrode, then slightly added using entrance again
Work electrode 6 process inlet preprocessing electrode 4 the undressed some materials arrived.
Preferably, the entrance roughing electrode 6 in the present embodiment and outlet roughing electrode 7 are all made of detachable electrode.
Entrance roughing electrode 6 is made of two entrances roughing sub-electrode 61, and outlet roughing electrode 7 is by two outlet roughing point
Electrode 71 forms.The programming difficulty in process can be reduced using detachable electrode.Specifically, first in the present embodiment
Driving mechanism and the second driving can be realized using existing spark erosion equipment.Specifically, the present embodiment is additionally provided with stream
Road semifinishing electrode and runner finish electrode, semifinishing and finishing after being respectively used to roughing.Wherein, runner half
Finishing electrode considers that the influence of discharging gap is thickened on the basis of roughing electrode, thicken with a thickness of 0.5mm, flow
Road finishing electrode on the basis of runner semifinishing electrode and considers that the influence of discharging gap thickens again, the thickness thickened
For 0.2mm.The embodiment of the present invention is after having carried out 11 preprocessing of flow channel entry point and the roughing of runner exit 12, the runner of impeller
It is got through, coolant liquid can fill up rapidly runner, and cooling and the chip removal effect of coolant liquid are substantially improved.Then carry out flow channel entry point
11 roughing and the semifinishing and finishing of runner entirety improve runner processing precision.Enclosed leaf after processing is completed
Wheel construction is as shown in Figure 9 and Figure 10.
The embodiment of the invention also provides a kind of double shrouded wheel electric discharge machining methods, comprising the following steps:
S1, using 4 preprocessing flow channel entry point 11 of preprocessing electrode；
S2 is connected to flow channel entry point 11 with runner exit 12 using outlet 7 roughing runner exit 12 of roughing electrode；
S3, using 6 roughing flow channel entry point 11 of entrance roughing electrode；
S4, semifinishing runner；
S5 finishes runner.
Specifically, the specific processing conditions of runner preprocessing, roughing, semifinishing and finishing is as follows in the present embodiment
Shown in table:
The embodiment of the present invention is after having carried out 11 preprocessing of flow channel entry point and the roughing of runner exit 12, the runner of impeller
It is got through, coolant liquid can fill up rapidly runner, and cooling and the chip removal effect of coolant liquid are substantially improved.Then carry out flow channel entry point
11 roughing and the semifinishing and finishing of runner entirety improve runner processing precision.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of double shrouded wheel electric discharge machining apparatus, it is characterised in that: including the impeller for installing double shrouded wheel to be processed
Installs fixture, electrode installs fixture and multiple preprocessing electrodes；
The impeller installs fixture is equipped with installation axle, and the double shrouded wheel to be processed is equipped with center positioning hole, and described to be processed
Double shrouded wheel is arranged on the mounting shaft by the center positioning hole；
The electrode installs fixture includes first electrode mounting base, and multiple preprocessing electrodes are installed with the first electrode
Seat connection, multiple preprocessing electrodes circumferentially arrange, the runner number of the number of preprocessing electrode and double shrouded wheel to be processed
Mesh is identical；And each preprocessing electrode is corresponding with a flow channel entry point of the double shrouded wheel to be processed when processing；
It further include the first driving mechanism, for driving the electrode installs fixture to move along a straight line along Z axis, the Z axis is the peace
Fill the extending direction of axis；First driving mechanism is also used to that the electrode installs fixture is driven to rotate around B axle, the B axle and X
Axis is parallel；
It further include that entrance roughing electrode, outlet roughing electrode and the second driving mechanism, the electrode installs fixture further include
Second electrode mounting base, the entrance roughing electrode and outlet roughing electrode use when with the second electrode mounting base
Connection, the entrance roughing electrode and outlet roughing electrode form runner for roughing；
Second driving mechanism is used to that the double shrouded wheel to be processed to be driven to rotate around the installation axle, and along X-axis and Y-axis
Linear motion.
2. double shrouded wheel electric discharge machining apparatus according to claim 1, it is characterised in that: each preprocessing
Electrode is provided with cooling passage.
3. double shrouded wheel electric discharge machining apparatus according to claim 2, it is characterised in that: the preprocessing electrode it is cold
But liquid channel is equipped with an inlet and two liquid outlets, and the inlet is set to one of the preprocessing electrode far from the center of circle
Side, two liquid outlets are respectively arranged on the two sides adjacent with the side of the inlet is equipped with.
4. double shrouded wheel electric discharge machining apparatus according to claim 1, it is characterised in that: the impeller installs fixture packet
Pedestal and the supporting table on the base top surface are included, the diameter of the supporting table is less than the diameter of the pedestal；
The installation axle be set to the supporting table deviate from the pedestal one side, the double shrouded wheel to be processed be relatively large in diameter one
End is equipped with boss, and when installation, the boss was connected to the one side that the supporting table deviates from the pedestal；
The positioning plate being sheathed on the outside of the supporting table is further fixed on the pedestal, being radially equipped with for the positioning plate is multiple
The threaded hole of the positioning plate is penetrated through, is equipped with adjusting screw in the threaded hole, and close to described to be processed in the threaded hole
One end of the boss of double shrouded wheel is equipped with soft adjustment column, and the adjustment column is in contact with the outer edge of the boss.
5. double shrouded wheel electric discharge machining apparatus according to claim 4, it is characterised in that: the adjustment column uses metal
Copper at.
6. double shrouded wheel electric discharge machining apparatus according to claim 4, it is characterised in that: set at the top of the installation axle
There is external screw thread, the external thread sleeve is equipped with locking nut, for fixing the double shrouded wheel to be processed.
7. double shrouded wheel electric discharge machining apparatus according to claim 1, it is characterised in that: the first electrode mounting base
For disc, the first electrode mounting base is circumferentially with multiple mounting holes, and the mounting hole is equipped with close to the side in the center of circle
The fixing end of locating slot, the preprocessing electrode is matched with the mounting hole, and the fixing end of the preprocessing electrode is equipped with
Locating piece, the mounting hole are provided with jackscrew far from the side in the center of circle, for fixing the preprocessing electrode and first electricity
Pole mounting base.
8. double shrouded wheel electric discharge machining apparatus according to claim 1, it is characterised in that: the entrance roughing electrode
Detachable electrode is all made of with the outlet roughing electrode.
9. a kind of double shrouded wheel electric discharge machining method based on double shrouded wheel electric discharge machining apparatus described in claim 1,
Characterized by comprising the following steps:
S1, using preprocessing electrode preprocessing flow channel entry point；
S2 is connected to flow channel entry point with runner exit using outlet roughing electrode roughing runner exit；
S3, using entrance roughing electrode roughing flow channel entry point；
S4, semifinishing runner；
S5 finishes runner.
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| CN201611208198.8A CN106735633B (en) | 2016-12-23 | 2016-12-23 | A kind of double shrouded wheel electric discharge machining apparatus and processing method |
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| CN201611208198.8A CN106735633B (en) | 2016-12-23 | 2016-12-23 | A kind of double shrouded wheel electric discharge machining apparatus and processing method |
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| CN106735633B true CN106735633B (en) | 2019-02-26 |
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| CN111906360A (en) * | 2020-08-11 | 2020-11-10 | 西安交通大学深圳研究院 | Nickel-based superalloy closed impeller rough machining method |
| CN114700566B (en) * | 2022-06-07 | 2022-08-19 | 成都宝利根创科电子有限公司 | Working method for machining integral ox horn gate insert and pre-penetrating tool electrode thereof |
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| EP2177298A1 (en) * | 2008-10-20 | 2010-04-21 | Sulzer Markets and Technology AG | Manufacturing procedure for closed discs |
| CN101508047B (en) * | 2009-03-11 | 2010-07-21 | 南京航空航天大学 | Multi-electrode spiral feeding integral blade wheel inter-blade passage electrolytic machining method |
| CN101524805B (en) * | 2009-04-10 | 2011-03-16 | 南京航空航天大学 | Method for manufacturing three-dimensional flow enclosed-type impeller inter-impeller passage and special clamp thereof |
| JP2012187660A (en) * | 2011-03-10 | 2012-10-04 | Mitsubishi Heavy Ind Ltd | Method for processing metal |
| CN103240473B (en) * | 2012-02-07 | 2015-08-19 | 通用电气公司 | Electrode and manufacture method thereof |
| CN103786005A (en) * | 2012-10-31 | 2014-05-14 | 通用电气公司 | Workpiece machining method and electric spark machining device |
| CN103909315B (en) * | 2013-01-04 | 2017-02-08 | 北京迪蒙数控技术有限责任公司 | Split electrode electrosparking method and adopted split electrode |
| CN103212760B (en) * | 2013-04-08 | 2016-01-13 | 南京航空航天大学 | A kind of runner processing method between uiform section blade profile integral impeller with ring leaf |
| CN105522243B (en) * | 2016-01-26 | 2017-07-11 | 北京市电加工研究所 | A kind of complex curved surface parts electrical discharge machining and detection device |
| CN206316495U (en) * | 2016-12-23 | 2017-07-11 | 北京市电加工研究所 | A kind of double shrouded wheel electric discharge machining apparatus |
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