CN108994402A - The blade profile sinker electric discharge machining method and its fixture and electrode of whole enclosed leaf joint - Google Patents
The blade profile sinker electric discharge machining method and its fixture and electrode of whole enclosed leaf joint Download PDFInfo
- Publication number
- CN108994402A CN108994402A CN201811059341.0A CN201811059341A CN108994402A CN 108994402 A CN108994402 A CN 108994402A CN 201811059341 A CN201811059341 A CN 201811059341A CN 108994402 A CN108994402 A CN 108994402A
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- Prior art keywords
- electrode
- electrode holder
- roughing
- leaf joint
- airflow channel
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- 238000003754 machining Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000009760 electrical discharge machining Methods 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 12
- 238000010079 rubber tapping Methods 0.000 claims abstract description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 25
- 230000005611 electricity Effects 0.000 claims description 7
- 238000003032 molecular docking Methods 0.000 claims description 2
- 238000010892 electric spark Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 238000003801 milling Methods 0.000 description 5
- 238000009740 moulding (composite fabrication) Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007514 turning 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
- 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
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
-
- 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
-
- 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
Abstract
The invention belongs to technical fields, and in particular to a kind of blade profile sinker electric discharge machining method and its fixture and electrode for whole enclosed leaf joint.It guarantees that blade and airflow channel type face, this method are not limited by blade profile type face complexity by electrode type face；By using shaped electrode, and cooperate electrode holder that can realize multi-shaft interlocked Electric Discharge Machining on electric spark shaping mill.The method of the present invention step are as follows: by leaf joint clamping to be processed on the workbench of EDM shaping machine, compress simultaneously centering；By roughing electrode clamping on electrode holder, then whole to be clamped on EDM shaping machine main tapping, requirement roughing airflow channel according to drawing to leaf joint, then the roughing electrode on electrode holder is unloaded again and changes finishing electrode finishing airflow channel into, complete the processing of whole enclosed leaf joint；The leaf joint processed is removed from the workbench of spark-erosion machine tool, the present invention is completed using the electrode holder and electrode of special construction.
Description
Technical field
The invention belongs to technical fields, and in particular to a kind of blade profile electric spark for whole enclosed leaf joint at
Type processing method and its fixture and electrode.
Background technique
Whole enclosed leaf joint is the new type fittings structure type that advanced aircraft engine uses, and is belonged to complicated integrally-built
Aeroengine components, such part is mostly using deep twisted blade as typical structure, and blade shape is complicated, airflow channel is narrow
It is narrow, cause mechanical processing difficulty larger.Especially root of blade radius is smaller, and clean-up machining difficulty is very big, connects knife, processing flutter
Problem is serious, and rigidity, blade diameter and the milling angle to milling cutter are had extremely stringent limitation using conventional milling so that
Five-axis milling almost cannot achieve.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of blade profile edm formings for whole enclosed leaf joint
Processing method and its fixture and electrode guarantee blade and airflow channel type face by electrode type face, and this method is not by blade profile type
The limitation of face complexity；By using shaped electrode, and cooperate electrode holder that can realize multiaxis on electric spark shaping mill
Link Electric Discharge Machining.
In order to solve the problems existing in the prior art, the technical scheme is that a kind of blade profile electricity of entirety enclosed leaf joint
Spark forming processing method, it is characterised in that: the method and step are as follows:
1) by leaf joint clamping to be processed on the workbench of EDM shaping machine, simultaneously centering is compressed；
2) then whole to be clamped on EDM shaping machine main tapping by roughing electrode clamping on electrode holder, according to
Then roughing electrode on electrode holder is unloaded again and changes finishing electricity by requirement roughing airflow channel of the drawing to leaf joint
Pole finishes airflow channel, completes the processing of whole enclosed leaf joint；
3) leaf joint processed is removed from the workbench of spark-erosion machine tool.
When the tapered structure in the inner flow passage face and outer flow passage face of the airflow channel, completed the process downwards from open end；
It, need to be from upper and lower ends pair when the inner flow passage face of the airflow channel is inclined-plane and consistent inclined direction with outer flow passage face
Connect processing.
The electrode holder, including electrode holder pedestal, quick change chuck and clamping blind rivet, the electrode holder pedestal
For circle, circular electrode holder pedestal it is provided circumferentially about in several connecting rods, the end of connecting rod is connected with quick change chuck, fastly
It changes chuck lower end surface and is provided with electrode, the upper surface of circular electrode holder pedestal is provided centrally with counterbore, is provided in counterbore
Locating plate two, the center of electrode holder pedestal are vertically installed with clamping blind rivet.
The locating plate two is connect by support nail two with electrode holder pedestal.
The quick change chuck is connect by screw three with electrode holder pedestal.
Including electrode tip and terminal clamp, the electrode tip is inserted in the peace in terminal clamp at the top of terminal clamp
It fills in hole, the bottom of terminal clamp is provided with locating plate one, and locating plate one is connect by support nail one with terminal clamp, described
The shape of electrode tip matches with the shape of airflow channel.
The two sides of the terminal clamp are provided with the threaded hole communicated with mounting hole, and screw one is provided in threaded hole
With screw two for the electrode tip that is fixedly clamped.
The electrode tip is divided into finishing electrode tip and roughing electrode tip.
Compared with prior art, advantages of the present invention is as follows:
The present invention be directed to a kind of sinker electric discharge machining methods of whole enclosed leaf joint blade profile, and this method is not by blade profile type face
Limitation, can complete the processing of spatial complex curved surface, airflow channel narrow whole enclosed leaf joint more particularly suitable for blade quantity
Blade profile processing, can be realized the impossible processing of conventional milling.
The present invention uses multi-electrode simultaneous processing, and processing efficiency can be improved；
The present invention is all made of EROWA quick change element, positioning accuracy and resetting when electrode design and electrode holder design
Precision can be guaranteed, and be conducive to improve part processing precision.
Detailed description of the invention
Fig. 1 is whole enclosed leaf joint schematic diagram；
Fig. 2 is the enlarged diagram in Fig. 1 at M；
Fig. 3 is electrode structure schematic diagram；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is electrode holder schematic diagram；
Fig. 6 is the A direction view in Fig. 5；
Electrode when Fig. 7 is airflow channel tapered structure divides mould schematic diagram；
Fig. 8 is that electrode when the inside and outside pipes' analysis inclined direction of airflow channel is consistent divides mould schematic diagram；
Fig. 9 is finishing electrode leaf pelvic surface of sacrum design diagram；
Figure 10 is finishing electrode leaf back design diagram
Figure 11 is finishing electrode inner flow passage face design diagram；
Figure 12 is finishing electrode outer flow passage face design diagram；
Figure 13 is multi-electrode fixture schematic diagram；
Figure 14 is the B direction view of Figure 13；
Description of symbols: 1-airflow channel, 2-blade profile leaf backs, 3-blade profile leaf pelvics surface of sacrum, 4-inner flow passage faces, 5-outflows
Road face, 6-electrode tips, 7-screws one, 8-terminal clamps, 9-locating plates one, 10-support nails one, 11-screws two, 12-
Electrode holder pedestal, 13-quick change chucks, 14-clamping blind rivets, 15-locating plates two, 16-support nails two, 17-screws three,
18-multi-electrode fixture bases, 19-finishing electrode leaf pelvics surface of sacrum, 20-finishing electrode leaf backs, 21-finish in electrodes
Pipes' analysis, 22-finishing electrode outer flow passage faces.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The present invention provides a kind of blade profile sinker electric discharge machining method step of whole enclosed leaf joint are as follows:
1) by leaf joint clamping to be processed on the workbench of EDM shaping machine, simultaneously centering is compressed；
2) then whole to be clamped on EDM shaping machine main tapping by roughing electrode clamping on electrode holder, according to
Requirement roughing airflow channel 1 of the drawing to leaf joint, then the roughing electrode on electrode holder is unloaded change finishing into again
Electrode finishes airflow channel 1, whole enclosed leaf joint is completed, such as the processing of Fig. 1 and Fig. 2.
When the 5 tapered structure of inner flow passage face 4 and outer flow passage face of the airflow channel 1, processed downwards from open end
At.As shown in Figure 7.
It, need to be from upper when the inner flow passage face 4 of the airflow channel 1 is inclined-plane and consistent inclined direction with outer flow passage face 5
Lower both ends docking processing.As shown in Figure 8.
3) leaf joint processed is removed from the workbench of spark-erosion machine tool.
The present invention provides a kind of Roughing and fine machining electrode, such as Fig. 3 and Fig. 4, including electrode tip 6 and terminal clamp 8, electrode holder
First 8 be tetragonal body, and the electrode tip 6 is inserted in the mounting hole in terminal clamp 8 from the top of terminal clamp 8, electrode holder
First 8 two sides are provided with the threaded hole communicated with mounting hole, and screw 1 and screw 2 11 are provided in threaded hole for clamping
Fixed electrode tip 6；
The bottom of terminal clamp 8 is provided with locating plate 1, and locating plate 1 is connect by support nail 1 with terminal clamp 8, institute
The electrode tip 6 stated divides for finishing electrode tip and roughing electrode tip.Its shape matches with the shape of airflow channel 1, positioning
Piece 1 using model ER009214 EROWA locating plate.
In electrode clamping, using EROWA setting element, essence is manufactured by the accuracy guarantee electrode of EROWA setting element
Degree, and in electrode manufacture just by the blank of electrode tip 6, terminal clamp 8 and locating plate 1, support nail 1 is connected
It connects, is integrally machined, to guarantee position precision and contour accuracy of the electrode relative to benchmark.
As shown in figure 9, blade profile leaf back 2 is finishing electrode leaf pelvic surface of sacrum 19, as shown in Figure 10, leaf in finishing electrode
Type leaf pelvic surface of sacrum 3 is finishing electrode leaf back 20, and as shown in figure 11, blade profile inner flow passage face 4 is finishing electrode inner flow passage face 21,
As shown in figure 12, blade profile outer flow passage face 5 is finishing electrode outer flow passage face 22, forms finishing electrode by this 4 positive.
The type face of the certain machining allowance of roughing electrode selected distance blade profile leaf back 2 is roughing electrode leaf pelvic surface of sacrum, away from
Type face from the certain machining allowance of blade profile leaf pelvic surface of sacrum 3 is roughing electrode leaf back, and selected distance blade profile inner flow passage face 4 centainly adds
The type face of spare time amount is roughing electrode inner flow passage face, and the type face apart from the certain machining allowance in blade profile outer flow passage face 5 is roughing
Electrode outer flow passage face forms roughing electrode by this 4 positive.
The shape of electrode of the present invention should take into account the planning of machining path, enable the shaped electrode of design according to planning into
Carry out electro-discharge machining to track without interference.
The present invention provides a kind of electrode holder, such as Fig. 5-Fig. 6, including electrode holder pedestal 12, quick change chuck 13 and clamping
Blind rivet 14, the electrode holder pedestal 12 are circle, and the provided circumferentially about of circular electrode holder pedestal 12 connects in several
Bar, the end of connecting rod are connected with quick change chuck 13, and Roughing and fine machining electrode, circular electrode holder are connected under quick change chuck 13
The upper surface of pedestal 12 is provided centrally with counterbore, and locating plate 2 15 is provided in counterbore, and the locating plate 2 15 passes through support
It follows closely 2 16 to connect with electrode holder pedestal 12, the center of electrode holder pedestal 12, which is vertically installed with, clamps blind rivet 14.Quick change chuck
13 using model ER034387 EROWA quick change chuck, clamp blind rivet 14 using model ER015465's
EROWA clamp blind rivet, locating plate 2 15 using model ER036657 EROWA locating plate.
The EROWA quick change chuck 13 is connected on electrode holder pedestal 12 by screw 3 17.
Electrode holder, function, which is mainly realized, carrys out holding electrode in pitch circle corresponding to leaf joint blade profile position, therefore to electricity
The corresponding position required precision of pole fixture holding electrode is high, while requiring electrode holder can be quick with spark machine main tapping
Installation and disassembly, thus electrode holder is connect with spark machine main tapping, and is connect with electrode and be all made of EROWA fast replacing device,
To be conducive to holding jig precision.
Herein according to processing site actual conditions, electrode holder is related to following several.
1) bipolar electrode fixture
It is rotary shaft for main tapping, and the conventional electric spark shaping mill limited when rotation by rotary inertia, design bipolar electrode press from both sides
Tool is processed simultaneously by 2 electrodes.It is characterized by lightweight construction, suitable for conventional electric spark of the rotary shaft on main tapping
Molding machine, monnolithic case are in shoulder pole structure, can correspond to pitch circle position 2 electrodes of equal cloth holder simultaneously, the shoulder pole knot in blade
The bipolar electrode fixture of structure is as shown in Figure 5.
Wherein EROWA locating plate, EROWA quick change chuck and clamping blind rivet are generally to be commercially available in the market, are belonged to
Standard tool, it is easy to use.
Bipolar electrode fixture is few to equipment limit, 2 airflow channels of time processing, using accurate indexing, conventional four axis electricity
Process equipment can realize the processing of whole enclosed leaf joint blade profile.
2) multi-electrode fixture since all blade profile patterns are identical, and is distributed on the same pitch circle of Central of the parts, in equipment
In the case where permission, the quantity using multi-electrode fixture time processing airflow channel is more, using accurate indexing, can realize whole
The processing of body enclosed leaf joint blade profile, it is high in machining efficiency.
It is characterized in that multiple electrodes can be clamped simultaneously, and make distribution of electrodes on the corresponding pitch circle of blade profile, by multiple electricity
Pole while electro-discharge machining, high in machining efficiency, being suitable for rotary shaft is Work turning table, the unrestricted edm forming of rotary inertia
Machine, as shown in Figs. 13 and 14.
Thus, by using shaped electrode and cooperate electrode holder, whole close just can be realized on electric spark shaping mill
The processing of formula leaf joint blade profile.Entire method mainly relies on electrode type face to guarantee blade and airflow channel type face, while by electricity
Pole clamp precision guarantees blade profile machining accuracy.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention, all
Changed using the equivalent structure that specification and accompanying drawing content of the invention are done, should be included in the scope of patent protection of invention
It is interior.
Claims (8)
1. a kind of blade profile sinker electric discharge machining method of entirety enclosed leaf joint, it is characterised in that: the method and step are as follows:
1) by leaf joint clamping to be processed on the workbench of EDM shaping machine, simultaneously centering is compressed；
2) then whole to be clamped on EDM shaping machine main tapping by roughing electrode clamping on electrode holder, according to
Requirement roughing airflow channel (1) of the drawing to leaf joint, then the roughing electrode on electrode holder is unloaded change finishing into again
Work electrode finishes airflow channel (1), completes the processing of whole enclosed leaf joint；
3) leaf joint processed is removed from the workbench of spark-erosion machine tool.
2. a kind of blade profile sinker electric discharge machining method of whole enclosed leaf joint according to claim 1, it is characterised in that:
When the inner flow passage face (4) of the airflow channel (1) and outer flow passage face (5) tapered structure, completed the process downwards from open end；
It, need to be from when the inner flow passage face (4) of the airflow channel (1) is inclined-plane and consistent inclined direction with outer flow passage face (5)
Upper and lower ends docking processing.
3. electrode holder according to claim 1, it is characterised in that: including electrode holder pedestal (12), quick change chuck
(13) and blind rivet (14) are clamped, the electrode holder pedestal (12) is circle, the circumference of circular electrode holder pedestal (12)
On be set to several connecting rods, the end of connecting rod is connected with quick change chuck (13), and quick change chuck (13) lower end surface is provided with electrode,
The upper surface of circular electrode holder pedestal (12) is provided centrally with counterbore, and locating plate two (15), electrode holder are provided in counterbore
The center of tool pedestal (12), which is vertically installed with, clamps blind rivet (14).
4. electrode holder according to claim 3, it is characterised in that: the locating plate two (15) passes through support nail two
(16) it is connect with electrode holder pedestal (12).
5. electrode holder according to claim 4, it is characterised in that: the quick change chuck (13) passes through screw three (17)
It is connect with electrode holder pedestal (12).
6. Roughing and fine machining electrode according to claim 3, it is characterised in that: including electrode tip (6) and terminal clamp (8),
The electrode tip (6) from being inserted at the top of terminal clamp (8) in the mounting hole in terminal clamp (8), terminal clamp (8)
Bottom is provided with locating plate one (9), and locating plate one (9) is connect by support nail one (10) with terminal clamp (8), the electrode
The shape of head (6) matches with the shape of airflow channel (1).
7. Roughing and fine machining electrode according to claim 6, it is characterised in that: the two sides of the terminal clamp (8) are set
It is equipped with the threaded hole communicated with mounting hole, screw one (7) and screw two (11) are provided in threaded hole for the electrode that is fixedly clamped
Head (6).
8. Roughing and fine machining electrode according to claim 7, it is characterised in that: the electrode tip (6) is divided into finishing electricity
Cartridge and roughing electrode tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059341.0A CN108994402A (en) | 2018-09-12 | 2018-09-12 | The blade profile sinker electric discharge machining method and its fixture and electrode of whole enclosed leaf joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059341.0A CN108994402A (en) | 2018-09-12 | 2018-09-12 | The blade profile sinker electric discharge machining method and its fixture and electrode of whole enclosed leaf joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108994402A true CN108994402A (en) | 2018-12-14 |
Family
ID=64590999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811059341.0A Pending CN108994402A (en) | 2018-09-12 | 2018-09-12 | The blade profile sinker electric discharge machining method and its fixture and electrode of whole enclosed leaf joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108994402A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394512A (en) * | 2019-07-22 | 2019-11-01 | 北京理工大学 | The processing method of multistage microstructural on a kind of free form surface |
| CN110434413A (en) * | 2019-08-30 | 2019-11-12 | 中国航发动力股份有限公司 | Axial-radial connects the processing method of slot inside a kind of bearing block |
| CN110561038A (en) * | 2019-08-16 | 2019-12-13 | 成都和鸿科技有限公司 | device and method for machining special-shaped hole of stationary blade of heavy gas turbine |
| CN110744267A (en) * | 2019-11-14 | 2020-02-04 | 无锡华能热能设备有限公司 | Ring for wind power equipment and machining process |
| CN110842657A (en) * | 2019-11-26 | 2020-02-28 | 中国航发贵州黎阳航空动力有限公司 | Method and device for machining sealing honeycomb of aero-engine part |
| CN114012192A (en) * | 2021-12-08 | 2022-02-08 | 中国航发南方工业有限公司 | Electric spark machining chuck of power turbine casing assembly groove |
| CN114985851A (en) * | 2022-06-29 | 2022-09-02 | 中国航发动力股份有限公司 | Device for machining oblique narrow rotational flow hole of swirler and machining method and application thereof |
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| CN206047278U (en) * | 2016-10-11 | 2017-03-29 | 东江模具（深圳）有限公司 | A kind of EDM auxiliary clamps |
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| CN209125062U (en) * | 2018-09-12 | 2019-07-19 | 西安西航集团莱特航空制造技术有限公司 | A kind of Roughing and fine machining electrode |
| CN209125063U (en) * | 2018-09-12 | 2019-07-19 | 西安西航集团莱特航空制造技术有限公司 | A kind of electrode holder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394512A (en) * | 2019-07-22 | 2019-11-01 | 北京理工大学 | The processing method of multistage microstructural on a kind of free form surface |
| CN110561038A (en) * | 2019-08-16 | 2019-12-13 | 成都和鸿科技有限公司 | device and method for machining special-shaped hole of stationary blade of heavy gas turbine |
| CN110434413A (en) * | 2019-08-30 | 2019-11-12 | 中国航发动力股份有限公司 | Axial-radial connects the processing method of slot inside a kind of bearing block |
| CN110744267A (en) * | 2019-11-14 | 2020-02-04 | 无锡华能热能设备有限公司 | Ring for wind power equipment and machining process |
| CN110842657A (en) * | 2019-11-26 | 2020-02-28 | 中国航发贵州黎阳航空动力有限公司 | Method and device for machining sealing honeycomb of aero-engine part |
| CN110842657B (en) * | 2019-11-26 | 2021-05-18 | 中国航发贵州黎阳航空动力有限公司 | Method and device for machining sealing honeycomb of aero-engine part |
| CN114012192A (en) * | 2021-12-08 | 2022-02-08 | 中国航发南方工业有限公司 | Electric spark machining chuck of power turbine casing assembly groove |
| CN114985851A (en) * | 2022-06-29 | 2022-09-02 | 中国航发动力股份有限公司 | Device for machining oblique narrow rotational flow hole of swirler and machining method and application thereof |
| CN114985851B (en) * | 2022-06-29 | 2023-09-26 | 中国航发动力股份有限公司 | Processing device for inclined narrow swirl holes of swirler and processing method and application thereof |
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