CN108044182A - A kind of complete broaching tool for being used to process pocket Ω shapes tongue-and-groove on the turbine disk - Google Patents
A kind of complete broaching tool for being used to process pocket Ω shapes tongue-and-groove on the turbine disk Download PDFInfo
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- CN108044182A CN108044182A CN201711307144.1A CN201711307144A CN108044182A CN 108044182 A CN108044182 A CN 108044182A CN 201711307144 A CN201711307144 A CN 201711307144A CN 108044182 A CN108044182 A CN 108044182A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D43/00—Broaching tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D43/00—Broaching tools
- B23D43/02—Broaching tools for cutting by rectilinear movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D43/00—Broaching tools
- B23D43/02—Broaching tools for cutting by rectilinear movement
- B23D2043/025—Broaching tools for cutting by rectilinear movement for producing grooves in turbines, e.g. for the insertion of blades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
A kind of complete broaching tool for being used to process pocket Ω shapes tongue-and-groove on the turbine disk, it is made of 14 broaching tools, including 4 fluting broaching tools, 6 type face roughing broach and 4 type face finishing broach, 4 fluting broaching tools are denoted as No. 1 broaching tool, No. 2 broaching tools, No. 3 broaching tools and No. 4 broaching tools respectively, 6 type face roughing broaches are denoted as No. 5 broaching tools, No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools, No. 9 broaching tools and No. 10 broaching tools respectively, and 4 are denoted as No. 11 broaching tools, No. 12 broaching tools, No. 13 broaching tools and No. 14 broaching tools respectively type face finishing broach；No. 1 broaching tool is to No. 14 broaching tool order clampings；1~No. 3 broaching tool uses full method of forming design structure using progression method design structure, No. 4 broaching tools using gradually cutting method design structure, No. 5, No. 10, No. 11 and No. 12 broaching tools；6~No. 9 broaching tools use inclined cutout nibbling method design structure；No. 13 and No. 4 broaching tools use the full method of forming+wheel cutting method design structure.The present invention can avoid broaching tool from occurring squeezing knife and collapse tooth phenomenon, and machining accuracy and broaching tool service life are substantially improved.
Description
Technical field
The invention belongs to technical field of aircraft engine part manufacture, are used to process the turbine disk more particularly to one kind
The complete broaching tool of pocket Ω shapes tongue-and-groove.
Background technology
On the turbine disk of certain new aero-engine, as shown in Figure 1, first appeared a kind of brand-new design by justifying more
The pocket Ω shapes tongue-and-groove that arc switching forms, the dimension width of pocket Ω shapes tongue-and-groove is only 3.5mm~7.5mm, and groove depth is up to 12mm
More than, and tongue-and-groove has been more than 120.In pocket Ω shapes tongue-and-groove tries process, when being manufactured experimently using traditional broaching tool, find
Volume bits are serious in kerve, and since tongue-and-groove size is too small, appearance bits are difficult, and the material of the turbine disk is high temperature alloy, is added
Work poor-performing, it is big that traditional broaching tool carries out the broaching drag being subject to during wire pulling method, easily occurs squeezing knife and collapses tooth phenomenon, part
Surface roughness is also difficult to ensure that, has seriously affected the production schedule of the turbine disk.
The content of the invention
In view of the problems of the existing technology, the present invention provide it is a kind of for process pocket Ω shapes tongue-and-groove on the turbine disk into
Broaching tool is covered, broaching tool can effectively be avoided to occur squeezing knife and collapse tooth phenomenon, for part processing precision up to 0.005mm, piece surface is thick
Rugosity is also improved significantly up to Ra0.4, and broaching tool service life, effectively meets the production schedule of the turbine disk.
To achieve these goals, the present invention adopts the following technical scheme that：One kind is used to process pocket Ω shapes on the turbine disk
The complete broaching tool of tongue-and-groove is made of 14 broaching tools, including 4 fluting broaching tools, 6 type face roughing broach and 4 type face finishing broach, 4
Fluting broaching tool is denoted as No. 1 broaching tool, No. 2 broaching tools, No. 3 broaching tools and No. 4 broaching tools respectively, 6 are denoted as No. 5 drawings respectively type face roughing broach
Knife, No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools, No. 9 broaching tools and No. 10 broaching tools, 4 are denoted as No. 11 broaching tools, 12 respectively type face finishing broach
Number broaching tool, No. 13 broaching tools and No. 14 broaching tools；No. 1 broaching tool is to No. 14 broaching tool order clampings；
No. 1 broaching tool, No. 2 broaching tools and No. 3 broaching tools are using progression method design structure, and cutter tooth both sides are with 1 ° 30 '
Tool cutting edge angle, cutter tooth ascending amount are 0.02mm~0.04mm；No. 1 broaching tool, No. 2 broaching tools and No. 3 broaching tools use straight line tooth form
Chip pocket, cutter hub are compressed with broaching machine and connected；
No. 4 broaching tools have 1 ° 30 ' of tool cutting edge angle using gradually cutting method design structure, cutter tooth both sides, and cutter tooth ascending amount is
0.02mm~0.04mm；No. 4 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
No. 5 broaching tools use full method of forming design structure, and cutter tooth ascending amount is 0.02mm~0.04mm；No. 5 drawings
Knife uses straight line tooth form chip pocket, and cutter tooth direction is parallel with broaching tool bottom surface benchmark, and cutter hub is compressed with broaching machine and connected；
No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools and No. 9 broaching tools are using inclined cutout nibbling method design structure, on cutter tooth
Rising amount is 0.01mm~0.02mm, and cutter tooth assumes diamond in shape structure, and cutter tooth end cutting edge forms back taper structure, and back taper size is 0.12mm
~0.15mm is broached using inclined cutout and removes surplus mode；No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools and No. 9 broaching tools are adopted
With straight line tooth form chip pocket, cutter hub is compressed with broaching machine and connected；
No. 10 broaching tools use full method of forming design structure, and cutter tooth ascending amount is 0.01mm~0.02mm；Described No. 10
Broaching tool using lengthen tooth form chip pocket, cutter tooth end cutting edge formed back taper structure, back taper size be 0.12mm~0.15mm, cutter hub
It compresses and connects with broaching machine；
No. 11 broaching tools use full method of forming design structure, and for processing the notch of tongue-and-groove, cutter tooth ascending amount is
0.01mm~0.025mm；No. 11 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
No. 12 broaching tools use full method of forming design structure, and for processing the slot bottom of tongue-and-groove, cutter tooth ascending amount is
0.01mm~0.025mm；No. 12 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
No. 13 broaching tools use the full method of forming+wheel cutting method design structure, and cutter tooth ascending amount is 0.01mm~0.02mm；Institute
It states No. 13 broaching tools and compresses and connect with broaching machine using tooth form chip pocket, cutter hub is lengthened；
No. 14 broaching tools use the full method of forming+wheel cutting method design structure, broach for the holotype face of tongue-and-groove, cutter tooth rises
It measures as 0.01mm~0.015mm；No. 14 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened.
The cutter hub size of No. 1 broaching tool to No. 14 broaching tools is 25mm × 30mm × 13 °；No. 1 broaching tool, No. 2 drawings
Knife, No. 3 broaching tools, No. 5 broaching tools, No. 6 broaching tools, No. 7 broaching tools, the cutter tooth anterior angle of No. 8 broaching tools and No. 9 broaching tools are 15 °, and cutter tooth relief angle is
3°；No. 4 broaching tools, No. 10 broaching tools, No. 12 broaching tools, the cutter tooth anterior angle of No. 13 broaching tools and No. 14 broaching tools are 15 °, and cutter tooth relief angle is
4°。
5~7 setting cutters tooth are left on No. 11 broaching tools, No. 12 broaching tools, No. 13 broaching tools and No. 14 broaching tools.
The high-speed steel or the powder metallurgy of CPMT15 that the material of No. 1 broaching tool to No. 14 broaching tools is W2Mo9Cr4VCo8 are high
Fast steel, quenching hardness are HRC67~69.
Beneficial effects of the present invention：
Compared with prior art, the present invention broaching tool can effectively be avoided to occur squeezing knife and collapse tooth phenomenon, part processing precision
Up to 0.005mm, Part Surface Roughness is also improved significantly up to Ra0.4, and broaching tool service life, effectively meets turbine
The production schedule of disk.
Description of the drawings
Fig. 1 is the turbine disk schematic diagram with pocket Ω shapes tongue-and-groove；
Fig. 2 is the type face broaching process schematic that pocket Ω shapes tongue-and-groove is carried out using the present invention；
Fig. 3 is No. 1 broaching tool in the complete broaching tool of the present invention to No. 3 broaching tool structure diagrams；
Fig. 4 is No. 4 broaching tool structure diagrams in the complete broaching tool of the present invention；
Fig. 5 is No. 5 broaching tool structure diagrams in the complete broaching tool of the present invention；
Fig. 6 is No. 6 broaching tools in the complete broaching tool of the present invention to No. 9 broaching tool structure diagrams；
Fig. 7 is No. 10 broaching tool structure diagrams in the complete broaching tool of the present invention；
Fig. 8 is No. 11 broaching tool structure diagrams in the complete broaching tool of the present invention；
Fig. 9 is No. 12 broaching tool structure diagrams in the complete broaching tool of the present invention；
Figure 10 is No. 13 broaching tool structure diagrams in the complete broaching tool of the present invention；
Figure 11 is No. 14 broaching tool structure diagrams in the complete broaching tool of the present invention；
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
A kind of complete broaching tool for being used to process pocket Ω shapes tongue-and-groove on the turbine disk, is made of 14 broaching tools, including 4 flutings
Fluting broaching tool is denoted as No. 1 broaching tool, No. 2 broaching tools, No. 3 broaching tools by broaching tool, 6 by type face roughing broach and 4 by type face finishing broach, 4 respectively
Type face roughing broach is denoted as No. 5 broaching tools, No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools, No. 9 broaching tools and No. 10 respectively with No. 4 broaching tools, 6
Broaching tool, 4 are denoted as No. 11 broaching tools, No. 12 broaching tools, No. 13 broaching tools and No. 14 broaching tools respectively type face finishing broach；No. 1 broaching tool is extremely
No. 14 broaching tool order clampings；
As shown in figure 3, No. 1 broaching tool, No. 2 broaching tools and No. 3 broaching tools are using progression method design structure, cutter tooth both sides tool
There is 1 ° 30 ' of tool cutting edge angle, for promoting cutting ability, cutter tooth ascending amount is 0.02mm~0.04mm；No. 1 broaching tool, No. 2 drawings
Using straight line tooth form chip pocket, cutter hub is compressed with broaching machine and connected for knife and No. 3 broaching tools；
As shown in figure 4, No. 4 broaching tools, using gradually cutting method design structure, cutter tooth both sides have 1 ° 30 ' of tool cutting edge angle, use
In promoting cutting ability, cutter tooth ascending amount is 0.02mm~0.04mm；No. 4 broaching tools are using lengthening tooth form chip pocket, cutter hub
It compresses and connects with broaching machine；
As shown in figure 5, No. 5 broaching tools use full method of forming design structure, cutter tooth ascending amount is 0.02mm~0.04mm；
No. 5 broaching tools use straight line tooth form chip pocket, cutter tooth direction is parallel with broaching tool bottom surface benchmark, for promoted hold bits ability with
Cutter tooth intensity, cutter hub are compressed with broaching machine and connected；
As shown in fig. 6, No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools and No. 9 broaching tools are designed using inclined cutout nibbling method
Structure, cutter tooth ascending amount are 0.01mm~0.02mm, and cutter tooth assumes diamond in shape structure, and cutter tooth end cutting edge forms back taper structure, back taper
Size is 0.12mm~0.15mm, and using inclined cutout broaching removal surplus mode, (traditional approach is " along broaching " removal surplus side
Formula), it ensure that structure size requirement and the intensity of chip pocket, make chip removal smooth；No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools and
Using straight line tooth form chip pocket, cutter hub with broaching machine is compressed and connected No. 9 broaching tools；
As shown in fig. 7, No. 10 broaching tools use full method of forming design structure, cutter tooth ascending amount for 0.01mm~
0.02mm；No. 10 broaching tools form back taper structure using tooth form chip pocket, cutter tooth end cutting edge is lengthened, and back taper size is
0.12mm~0.15mm, cutter hub are compressed with broaching machine and connected；
As shown in figure 8, No. 11 broaching tools use full method of forming design structure, for processing the notch of tongue-and-groove, on cutter tooth
Rising amount is 0.01mm~0.025mm；No. 11 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
As shown in figure 9, No. 12 broaching tools use full method of forming design structure, for processing the slot bottom of tongue-and-groove, on cutter tooth
Rising amount is 0.01mm~0.025mm；No. 12 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
As shown in Figure 10, No. 13 broaching tools use the full method of forming+wheel cutting method design structure, and cutter tooth ascending amount is 0.01mm
~0.02mm；No. 13 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
As shown in figure 11, No. 14 broaching tools use the full method of forming+wheel cutting method design structure, are drawn for the holotype face of tongue-and-groove
It cuts, cutter tooth ascending amount is 0.01mm~0.015mm；No. 14 broaching tools are compressed using tooth form chip pocket, cutter hub is lengthened with broaching machine
Connection.
The cutter hub size of No. 1 broaching tool to No. 14 broaching tools is 25mm × 30mm × 13 °；No. 1 broaching tool, No. 2 drawings
Knife, No. 3 broaching tools, No. 5 broaching tools, No. 6 broaching tools, No. 7 broaching tools, the cutter tooth anterior angle of No. 8 broaching tools and No. 9 broaching tools are 15 °, and cutter tooth relief angle is
3°；No. 4 broaching tools, No. 10 broaching tools, No. 12 broaching tools, the cutter tooth anterior angle of No. 13 broaching tools and No. 14 broaching tools are 15 °, and cutter tooth relief angle is
4°。
5~7 setting cutters tooth are left on No. 11 broaching tools, No. 12 broaching tools, No. 13 broaching tools and No. 14 broaching tools, for protecting
The dimensional tolerance of part is demonstrate,proved, promotes Part Surface Roughness.
The material of No. 1 broaching tool to No. 14 broaching tools is the high-speed steel of W2Mo9Cr4VCo8 (M42) or the powder of CPMT15
Low-alloyed high speed steel, quenching hardness are HRC67~69.
Before use, first by No. 1 broaching tool to No. 14 broaching tool order clampings to broaching machine, ensure to draw after locking using ten thousand torque wrenches
Knife does not tilt, and adjacent front and rear broaching tool end face will be leaned on sternly.Before broaching, examination broaching is carried out using test specimen is projected, it is ensured that project test specimen
Then size qualification is formally broached, broaching speed control ensures sufficient coolant supply in 1~2m/min, broaching.
Scheme in embodiment be not to limit the scope of patent protection of the present invention, it is all without departing from carried out by the present invention etc.
Effect implements or change, is both contained in the scope of the claims of this case.
Claims (4)
1. a kind of complete broaching tool for being used to process pocket Ω shapes tongue-and-groove on the turbine disk, it is characterised in that：It is made of, wraps 14 broaching tools
4 fluting broaching tools, 6 are included type face roughing broach and 4 type face finishing broach, 4 are denoted as No. 1 broaching tool, No. 2 drawings respectively fluting broaching tool
Knife, No. 3 broaching tools and No. 4 broaching tools, 6 type face roughing broach be denoted as respectively No. 5 broaching tools, No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools, No. 9
Broaching tool and No. 10 broaching tools, 4 are denoted as No. 11 broaching tools, No. 12 broaching tools, No. 13 broaching tools and No. 14 broaching tools respectively type face finishing broach；It is described
No. 1 broaching tool is to No. 14 broaching tool order clampings；
No. 1 broaching tool, No. 2 broaching tools and No. 3 broaching tools use progression method design structure, and cutter tooth both sides are inclined with 1 ° 30 ' of master
Angle, cutter tooth ascending amount are 0.02mm~0.04mm；No. 1 broaching tool, No. 2 broaching tools and No. 3 broaching tools hold bits using straight line tooth form
Slot, cutter hub are compressed with broaching machine and connected；
No. 4 broaching tools have 1 ° 30 ' of tool cutting edge angle using gradually cutting method design structure, cutter tooth both sides, and cutter tooth ascending amount is
0.02mm~0.04mm；No. 4 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
No. 5 broaching tools use full method of forming design structure, and cutter tooth ascending amount is 0.02mm~0.04mm；No. 5 broaching tools are adopted
With straight line tooth form chip pocket, cutter tooth direction is parallel with broaching tool bottom surface benchmark, and cutter hub is compressed with broaching machine and connected；
No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools and No. 9 broaching tools are using inclined cutout nibbling method design structure, cutter tooth ascending amount
For 0.01mm~0.02mm, cutter tooth assumes diamond in shape structure, and cutter tooth end cutting edge forms back taper structure, back taper size for 0.12mm~
0.15mm is broached using inclined cutout and removes surplus mode；No. 6 broaching tools, No. 7 broaching tools, No. 8 broaching tools and No. 9 broaching tools use
Straight line tooth form chip pocket, cutter hub are compressed with broaching machine and connected；
No. 10 broaching tools use full method of forming design structure, and cutter tooth ascending amount is 0.01mm~0.02mm；No. 10 broaching tools
Using tooth form chip pocket is lengthened, cutter tooth end cutting edge forms back taper structure, and back taper size is 0.12mm~0.15mm, and cutter hub is with drawing
Bed compresses connection；
No. 11 broaching tools use full method of forming design structure, for processing the notch of tongue-and-groove, cutter tooth ascending amount for 0.01mm~
0.025mm；No. 11 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
No. 12 broaching tools use full method of forming design structure, for processing the slot bottom of tongue-and-groove, cutter tooth ascending amount for 0.01mm~
0.025mm；No. 12 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
No. 13 broaching tools use the full method of forming+wheel cutting method design structure, and cutter tooth ascending amount is 0.01mm~0.02mm；Described 13
Number broaching tool is compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened；
No. 14 broaching tools use the full method of forming+wheel cutting method design structure, broach for the holotype face of tongue-and-groove, cutter tooth ascending amount is
0.01mm~0.015mm；No. 14 broaching tools are compressed with broaching machine and connected using tooth form chip pocket, cutter hub is lengthened.
2. according to claim 1 a kind of for processing the complete broaching tool of pocket Ω shapes tongue-and-groove on the turbine disk, feature exists
In：The cutter hub size of No. 1 broaching tool to No. 14 broaching tools is 25mm × 30mm × 13 °；No. 1 broaching tool, No. 2 broaching tools, No. 3
Broaching tool, No. 5 broaching tools, No. 6 broaching tools, No. 7 broaching tools, the cutter tooth anterior angle of No. 8 broaching tools and No. 9 broaching tools are 15 °, and cutter tooth relief angle is 3 °；Institute
The cutter tooth anterior angle of No. 4 broaching tools, No. 10 broaching tools, No. 12 broaching tools, No. 13 broaching tools and No. 14 broaching tools is stated as 15 °, cutter tooth relief angle is 4 °.
3. according to claim 1 a kind of for processing the complete broaching tool of pocket Ω shapes tongue-and-groove on the turbine disk, feature exists
In：5~7 setting cutters tooth are left on No. 11 broaching tools, No. 12 broaching tools, No. 13 broaching tools and No. 14 broaching tools.
4. according to claim 1 a kind of for processing the complete broaching tool of pocket Ω shapes tongue-and-groove on the turbine disk, feature exists
In：No. 1 broaching tool to No. 14 broaching tools material be W2Mo9Cr4VCo8 high-speed steel or CPMT15 PM HSS,
Quenching hardness is HRC67~69.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711307144.1A CN108044182B (en) | 2017-12-11 | 2017-12-11 | It is a kind of for processing the complete broaching tool of pocket Ω shape tongue-and-groove on the turbine disk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711307144.1A CN108044182B (en) | 2017-12-11 | 2017-12-11 | It is a kind of for processing the complete broaching tool of pocket Ω shape tongue-and-groove on the turbine disk |
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| CN108044182B CN108044182B (en) | 2019-03-26 |
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| CN108723481A (en) * | 2018-08-16 | 2018-11-02 | 湖南南方通用航空发动机有限公司 | A kind of turbine disc mortise processing method |
| CN109365902A (en) * | 2018-11-14 | 2019-02-22 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of pocket Ω tongue-and-groove wire pulling method method on the IN718 material turbine disk |
| CN109396541A (en) * | 2018-11-20 | 2019-03-01 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of special comprehensive finishing broach improving fan disk super large tongue-and-groove processing quality |
| CN111702249A (en) * | 2020-06-30 | 2020-09-25 | 中国航发动力股份有限公司 | Broach group structure for grooving wheel disc tenon and mortise and grooving method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723481A (en) * | 2018-08-16 | 2018-11-02 | 湖南南方通用航空发动机有限公司 | A kind of turbine disc mortise processing method |
| CN109365902A (en) * | 2018-11-14 | 2019-02-22 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of pocket Ω tongue-and-groove wire pulling method method on the IN718 material turbine disk |
| CN109396541A (en) * | 2018-11-20 | 2019-03-01 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of special comprehensive finishing broach improving fan disk super large tongue-and-groove processing quality |
| CN111702249A (en) * | 2020-06-30 | 2020-09-25 | 中国航发动力股份有限公司 | Broach group structure for grooving wheel disc tenon and mortise and grooving method |
| CN111702249B (en) * | 2020-06-30 | 2021-05-25 | 中国航发动力股份有限公司 | Broach group structure for grooving wheel disc tenon and mortise and grooving method |
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| Publication number | Publication date |
|---|---|
| CN108044182B (en) | 2019-03-26 |
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