CN106737011B - A kind of the crown processing unit (plant) and method of low-pressure turbine blade - Google Patents
A kind of the crown processing unit (plant) and method of low-pressure turbine blade Download PDFInfo
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- CN106737011B CN106737011B CN201611049348.5A CN201611049348A CN106737011B CN 106737011 B CN106737011 B CN 106737011B CN 201611049348 A CN201611049348 A CN 201611049348A CN 106737011 B CN106737011 B CN 106737011B
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- pressure turbine
- turbine blade
- grinding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/14—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding turbine blades, propeller blades or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
A kind of the crown processing unit (plant) and method of low-pressure turbine blade belong to the processing of aero-engine low-pressure turbine blade.Described device includes：Numerical control single side creep feed ginder, idler wheel, gross blow hole ultra-soft grinding wheel and fixture, idler wheel is mounted on the trimmer roller shaft of numerical control single side creep feed ginder, gross blow hole ultra-soft grinding wheel is mounted on the main shaft of numerical control single side creep feed ginder, and fixture is mounted on the workbench of numerical control single side creep feed ginder；Idler wheel is equipped with the first grinding area and the second grinding area, the structure of first grinding area is identical as in the crown of low-pressure turbine blade, exhaust side sealing teeth, the structure of leading edge sealing teeth, and the structure of the second grinding area is identical as the structure of air inlet margin plate of low-pressure turbine blade；The end face of gross blow hole ultra-soft grinding wheel is formed with the crown machining profile being trimmed to by idler wheel；The crown locating piece of fixture is equipped with diversion trench.By the device, the structure of low-pressure turbine blade crown can be only processed by one of manufacturing procedure.
Description
Technical field
The present invention relates to aero-engine low-pressure turbine blade processing technique field, more particularly to a kind of low-pressure turbine blade
Crown processing unit (plant) and method.
Background technology
Low-pressure turbine blade crown processing always be turbo blade processing difficult point, Major Difficulties be seal structure compared with
Complexity, size is more, blade tip surplus is larger and the size of finished product is relatively thin, generally 0.3~1.0mm, therefore in process
Easily generate burn and crackle.
Currently, the crown processing of low-pressure turbine blade includes four procedures：As shown in Figure 1, being the low pressure whirlpool with surplus
The crown of impeller blade, to the crown of the low-pressure turbine blade with surplus after processing is completed as shown in Fig. 2, the first procedure is mill
Cut out 1, second operation work in crown be grinding exhaust side sealing teeth 2, third procedure be ground out leading edge sealing teeth 3,
4th procedure is to be ground out air inlet margin plate 4.A grinding wheel and idler wheel are corresponded to per procedure, when carrying out process switching, all
It needs to carry out clamping again to low-pressure turbine blade, causes processing dimension unstable, poor dimensional precision, and obturaging due to crown
The thickness of tooth is smaller, and minimum is in 0.7mm or so, but unilateral allowance has 4mm or so, is very easy to generate burn and split
Line, therefore the depth of cut is very small during grinding, the time used in each process is respectively 50 minutes, 23 minutes, 23 points
Clock, 15 minutes, therefore be ground four procedures used time 111 minutes in total, the processing for averagely completing a low-pressure turbine blade needs
140 minutes or so, cause the grinding time long, processing efficiency is low.
Invention content
In order to solve it is of the existing technology processing low-pressure turbine blade crown four processes when, need replacing difference
Idler wheel, and need to clamping be carried out to low-pressure turbine blade again so that low-pressure turbine blade size is unstable, processing efficiency
Low and due to sealing teeth thinner thickness makes the problem of being also easy to produce burn and crackle during processing sealing teeth, a side
Face, the present invention provides a kind of crown processing unit (plant) of low-pressure turbine blade, the crown processing unit (plant)s of the low-pressure turbine blade
Including：
Numerical control single side creep feed ginder, idler wheel, gross blow hole ultra-soft grinding wheel and fixture, idler wheel are mounted on numerical control single side creep feed ginder
Trimmer roller shaft on, grinding wheel be mounted on numerical control single side creep feed ginder main shaft on, fixture delays mounted on numerical control single side into mill
On the workbench of bed；
The end face of the idler wheel is equipped with the first grinding area, and the side of the idler wheel is equipped with the second grinding area, the first mill
Cut in the structure in region and the crown of low-pressure turbine blade, exhaust side sealing teeth, the structure of leading edge sealing teeth it is identical, the second mill
The structure for cutting region is identical as the structure of air inlet margin plate of the low-pressure turbine blade；
The end face of the gross blow hole ultra-soft grinding wheel is formed with by the first grinding area and the second grinding area of the idler wheel
The crown machining profile being trimmed to；
The crown locating piece of the fixture is equipped with diversion trench, the crown of the groove profile of diversion trench and the low-pressure turbine blade
Shape it is identical.
The numerical control single side creep feed ginder is additionally provided with pilot jet, the inlet of pilot jet and the numerical control single side delay into
The liquid outlet of the tank for coolant of grinding machine connects, the heavy caliber spray of numerical control single side creep feed ginder described in the liquid outlet face of pilot jet
The liquid outlet of mouth.
The fixture further includes bottom plate, riser, tenon tooth locating piece, integral shroud compressing member and tenon listrium compressing member；
Riser is bolted on bottom plate and vertical with bottom plate, and the crown locating piece of the fixture is installed by bolt
In one end of the separate bottom plate of the riser, tenon tooth locating piece is mounted on the riser close to one end of the bottom plate；Integral shroud pressure
Tight part is mounted on the upside of the riser by bolt, and tenon listrium compressing member is mounted on the downside of the riser by bolt.
On the other hand, the present invention provides a kind of crown processing unit (plant) grinding low pressure whirlpools using the low-pressure turbine blade
The method of the crown of impeller blade, the method includes：
The hand line nozzle of the numerical control single side creep feed ginder is replaced with heavy caliber nozzle by step 1；
The low-pressure turbine blade is mounted on the fixture by step 2, and the basin of the low-pressure turbine blade is preced with to sawtooth
It pushes up positioning surface to position with the crown locating piece, makes the crown of low-pressure turbine blade described in the diversion trench face on crown locating piece
Groove body；
Step 3, the position for adjusting heavy caliber nozzle make the liquid outlet of heavy caliber nozzle be directed at the diversion trench；
Step 4, setting corase grinding parameter and fine grinding parameter, when corase grinding, the grinding linear velocity of the gross blow hole ultra-soft grinding wheel is set
It is set to 15~18m/s, the feed speed of the low-pressure turbine blade is set as 30~45mm/min, roughly grinds to refine reserved add
Spare time amount is set as 0.2~0.3mm；When fine grinding, the grinding linear velocity of the gross blow hole ultra-soft grinding wheel is set as 15~18m/s,
The feed speed of the low-pressure turbine blade is set as 50~70mm/min；
Step 5 starts the numerical control single side creep feed ginder, the heavy caliber nozzle to the diversion trench spray cooling liquid,
Gross blow hole ultra-soft grinding wheel described in the roller grinding, the gross blow hole ultra-soft grinding wheel is from the low-pressure turbine blade close to diversion trench
One end be ground to the other end.
The crown processing unit (plant) of low-pressure turbine blade in through the invention can be processed only by one of manufacturing procedure
An idler wheel is only used only in whole machined surfaces of low-pressure turbine blade crown, therefore in process, without often processing one
A process just needs to re-start clamping parts, and the idler wheel more renewed saves the quantity of idler wheel, saved cost, improves and adds
Work efficiency rate solves the problems, such as the poor dimensional precision caused by clamping repeatedly, increases the nozzle of numerical control single side creep feed ginder
Discharge area, increase the flow of the coolant liquid of ejection, and by the way that diversion trench is arranged on the crown locating piece of fixture, it is cooling
Liquid is sprayed onto the crown of low pressure guide vane by diversion trench, makes what coolant liquid more concentrated to be sprayed onto crown, is played effectively to crown
Cooling effect, prevent the generation of burn phenomenon, and linear velocity and low pressure whirlpool by the way that gross blow hole ultra-soft grinding wheel is rationally arranged
The feed speed of impeller blade ensures processing efficiency under the premise of ensureing processing quality.
Description of the drawings
Fig. 1 is the structural schematic diagram of the crown of the low-pressure turbine blade provided by the invention with surplus；
Fig. 2 is the structural schematic diagram of the crown of the low-pressure turbine blade provided by the invention processed；
Fig. 3 is the structural schematic diagram of the side of idler wheel provided by the invention；
Fig. 4 is the schematic diagram of roller grinding gross blow hole ultra-soft grinding wheel provided by the invention；
Fig. 5 is the structural schematic diagram of gross blow hole ultra-soft grinding wheel provided by the invention；
Fig. 6 is the schematic diagram of the crown of gross blow hole ultra-soft wheel grinding low-pressure turbine blade provided by the invention；
Fig. 7 is the front view of fixture provided by the invention；
Fig. 8 is the side view of fixture provided by the invention.
Wherein,
In 1 crown；2 exhaust side sealing teeths；3 leading edge sealing teeths；4 air inlet margin plates；5 idler wheels；6 first grinding areas；7
Second grinding area；8 gross blow hole ultra-soft grinding wheels；9 fixtures；10 crown locating pieces；11 diversion trenches；12 low-pressure turbine blades；13 bottoms
Plate；14 risers；15 tenon tooth locating pieces；16 integral shroud compressing members；17 tenon listrium compressing members；The crown of 18 low-pressure turbine blades.
Specific implementation mode
In order to solve it is of the existing technology processing low-pressure turbine blade crown four processes when, need replacing difference
Idler wheel and grinding wheel, and clamping is carried out to low-pressure turbine blade again so that low-pressure turbine blade size is unstable, processing effect
The low and thinner thickness due to sealing teeth of rate makes the problem of being also easy to produce burn and crackle during processing sealing teeth, this
Invention provides a kind of the crown processing unit (plant) and method of low-pressure turbine blade, wherein the crown processing dress of low-pressure turbine blade
Set including：
Numerical control single side creep feed ginder, idler wheel 5, gross blow hole ultra-soft grinding wheel 8 and fixture 9, numerical control single side creep feed grinding machine is existing
There is grinding machine, such as the numerical control single side creep feed grinding machine of model HZ-MKL-7140 × 10 can be selected；
Idler wheel 5 is mounted on the trimmer roller shaft of numerical control single side creep feed ginder, and gross blow hole ultra-soft grinding wheel 8 is mounted on numerical control
On the main shaft of single side creep feed ginder, fixture 9 is mounted on the workbench of numerical control single side creep feed ginder；
It is illustrated in figure 3 the partial structural diagram of idler wheel 5, the end face of idler wheel 5 is equipped with the first grinding area 6, idler wheel 5
Side is equipped with the second grinding area 7, and as shown in Figure 4 and Figure 5, the end face of gross blow hole ultra-soft grinding wheel 8 is formed with by the first of idler wheel 5
The profile of the crown of the crown machining profile that grinding area 6 and the second grinding area 7 are trimmed to, the profile and low-pressure turbine blade
It is identical, the crown for processing low-pressure turbine blade；
Idler wheel 5 is after modifying gross blow hole ultra-soft grinding wheel 8, as shown in fig. 6, being carried using the grinding of gross blow hole ultra-soft grinding wheel 8
The low-pressure turbine blade of surplus, wherein due to the crown 18 of the structure and low-pressure turbine blade of the first grinding area 6 of idler wheel 5
Crown in 1, exhaust side sealing teeth 2, the structure of leading edge sealing teeth 3 it is identical, the structure and low-pressure turbine of the second grinding area 7
The structure of the air inlet margin plate 4 of blade is identical, therefore gross blow hole ultra-soft grinding wheel 8 is in the mistake being ground to the crown with surplus
Cheng Zhong can be formed simultaneously 1 in the crown of crown 18, exhaust side sealing teeth 2,3 and of leading edge sealing teeth as shown in Fig. 6 and Fig. 2
The structure of air inlet margin plate 4；
As shown in Figure 7 and Figure 8, the crown locating piece 10 of fixture 9 is equipped with diversion trench 11, the groove profile and low pressure of diversion trench 11
The shape of the crown 18 of turbo blade 12 is identical, and fixture 9 further includes bottom plate 13, riser 14, tenon tooth locating piece 15, integral shroud compressing member
16 and tenon listrium compressing member 17；Riser 14 is bolted on bottom plate 13 and vertical with bottom plate 13, crown locating piece 10
One end of the separate bottom plate 13 of riser 14 is mounted on by bolt, tenon tooth locating piece 15 is mounted on riser 14 close to the one of bottom plate 13
End；Integral shroud compressing member 16 is mounted on the upside of riser 14 by bolt, and tenon listrium compressing member 17 is mounted on riser by bolt
14 downside.
When low-pressure turbine blade 12 is mounted on fixture 9, by crown locating piece 10 and tenon tooth locating piece 15 to low pressure whirlpool
Impeller blade 12 is positioned, and then compresses low-pressure turbine blade 12 by integral shroud compressing member 16 and tenon listrium compressing member 17,
During installation, the basin of low-pressure turbine blade 12 is made to be located in the positioning surface of crown locating piece 10 to sawtooth crown positioning surface
On, and make the groove body of the crown 18 of 11 face low-pressure turbine blade 12 of diversion trench on crown locating piece 10, such numerical control single side
The coolant liquid that the nozzle of creep feed ginder sprays can be injected on diversion trench 11, and then spray to low-pressure turbine leaf by diversion trench 11
The crown 18 of piece 12, and flowed along the groove body of the crown of low-pressure turbine blade 12 18, to the crown 18 of low-pressure turbine blade 12
Play good cooling effect.
It in the present invention, can be in order to preferably play cooling effect to the crown 18 of the low-pressure turbine blade of processing 12
The hand line nozzle of original numerical control single side creep feed ginder is changed to heavy caliber nozzle, the installation of the inlet of heavy caliber nozzle
Position is identical as the installation site of inlet of original hand line nozzle of single side creep feed ginder, i.e., with single side creep feed ginder
Tank for coolant liquid outlet connection, adjust heavy caliber nozzle liquid outlet position, so that the liquid outlet of heavy caliber nozzle is aligned
Diversion trench 11, and hydraulic pressure and water yield are adjusted, cooling effect is enhanced, prevents from generating the phenomenon that burning in process.
Since the thickness of sealing teeth is smaller, in the present invention, in order to better ensure that processing quality, to low-pressure turbine blade
12 sealing teeth is further cooled down, and pilot jet, the feed liquor of pilot jet can be installed on numerical control single side creep feed ginder
Mouth is connect with the liquid outlet of the tank for coolant of numerical control single side creep feed ginder, is adjusted the liquid outlet of pilot jet, is made pilot jet
The liquid outlet of the heavy caliber nozzle of liquid outlet face numerical control single side creep feed ginder, the i.e. liquid outlet of pilot jet and heavy caliber nozzle
Liquid outlet it is opposite, in this way, gross blow hole ultra-soft grinding wheel 8 from low-pressure turbine blade 12 close to one end of diversion trench 11 to the other end into
When row grinding, heavy caliber nozzle is to gross blow hole ultra-soft grinding wheel 8 into knife-edge part spray cooling liquid, and pilot jet is to gross blow hole ultra-soft
Grinding wheel 8 goes out knife-edge part spray cooling liquid, i.e., common spray cooling liquid gives the hat from low-pressure turbine blade 12 in two directions
Top 18, better cooling effect is played to the sealing teeth of crown 18.
The crown 18 of low-pressure turbine blade 12 is processed using the crown processing unit (plant) of the low-pressure turbine blade in the present invention
Method is as follows：
The hand line nozzle of numerical control single side creep feed ginder is replaced with heavy caliber nozzle by step 1；
Low-pressure turbine blade 12 is mounted on fixture 9 by step 2, and the basin of low-pressure turbine blade 12 is positioned to sawtooth crown
Face is positioned with crown locating piece 10, makes the slot of the crown 18 of the 11 face low-pressure turbine blade 12 of diversion trench of crown locating piece 10
Body；
Step 3, the position for adjusting heavy caliber nozzle make the liquid outlet of heavy caliber nozzle be directed at diversion trench 11；In this way, passing through
The coolant liquid that heavy caliber nozzle sprays is sprayed along diversion trench 11 to the crown 18 of low-pressure turbine blade 12, it is therefore prevented that flow is disperseed
Caused by cooling effect difference and make low-pressure turbine blade 12 generation the phenomenon that burning.
In order to further increase cooling effect, can be replaced by original hand line nozzle of numerical control single side creep feed ginder
When at heavy caliber nozzle, pilot jet also is installed for numerical control single side creep feed ginder simultaneously, makes the positive logarithm of the liquid outlet of pilot jet
The liquid outlet of the heavy caliber nozzle of single side creep feed ginder is controlled, so when gross blow hole ultra-soft grinding wheel 8 is ground crown 18, gross blow hole is super
When Soft grinding wheel 8 is ground from low-pressure turbine blade close to one end of diversion trench 11 to the other end, heavy caliber nozzle is to gross blow hole
Ultra-soft grinding wheel 8 into knife-edge part spray cooling liquid, pilot jet goes out knife-edge part spray cooling liquid to gross blow hole ultra-soft grinding wheel 8,
I.e. common spray cooling liquid plays better cooling effect to crown 18 in two directions.
Step 4, setting corase grinding parameter and fine grinding parameter, when corase grinding, the grinding linear velocity of gross blow hole ultra-soft grinding wheel 8 is set as
The feed speed of 15~18m/s, low-pressure turbine blade 12 are set as 30~45mm/min, roughly grind the allowance to refine reserved
It is set as 0.2~0.3mm；When fine grinding, the grinding linear velocity of gross blow hole ultra-soft grinding wheel 8 is set as 15~18m/s, low-pressure turbine leaf
The feed speed of piece 12 is set as 50~70mm/min；
If the grinding linear velocity of gross blow hole ultra-soft grinding wheel 8 is larger, the heat generated in grinding process is more, it is easier go out
Phenomenon of now burning can influence processing efficiency if the grinding linear velocity of gross blow hole ultra-soft grinding wheel 8 is relatively low, and corase grinding and fine grinding are joined
When number is designed within the scope of the invention, the heat of generation is relatively low and can be very good to play using the cooling means in the present invention
Cooling effect has replaced heavy caliber nozzle spray cooling liquid, and diversion trench 11 is arranged on crown locating piece 10, make coolant liquid
It can collect in diversion trench 11 through the injection of diversion trench 11 to the crown 18 of low-pressure turbine blade 12, on the one hand increase ejection
Coolant liquid flow, on the other hand prevent the flow of coolant liquid to disperse, play good cooling effect, can prevent from being ground
Burn phenomenon occurs in the process.
Step 5 starts numerical control single side creep feed ginder, and heavy caliber nozzle is ground air to diversion trench spray cooling liquid, idler wheel 5
Hole ultra-soft grinding wheel 8, the one end of gross blow hole ultra-soft grinding wheel 8 from low-pressure turbine blade 12 close to diversion trench are ground to the other end.
Low-pressure turbine blade 12 is ground in the corase grinding and fine grinding parameter area set in the present invention, ensure that
The processing quality and roughness of the crown 18 of low-pressure turbine blade 12 processed under the premise of not will produce burn is relatively low.
In the present invention, the trade mark of gross blow hole ultra-soft grinding wheel 8 can select WA/PA/F80/100F12V-35m/s CF2,
Specification can be 500mm × 203mm × 50mm, and 500mm is grinding wheel outer diameter, and 203mm is grinding wheel internal diameter, and 50mm is grinding wheel thickness.
It, can be same after gross blow hole ultra-soft grinding wheel 8 is ground to the other end from low-pressure turbine blade 12 close to one end of diversion trench 11
When be ground out in crown 1 in crown, exhaust side sealing teeth 2, leading edge sealing teeth 3 and air inlet margin plate 4.
The crown processing unit (plant) of low-pressure turbine blade 12 in through the invention can be processed only by one of manufacturing procedure
Go out whole machined surfaces of 12 crown of low-pressure turbine blade, an idler wheel 5 is only used only, therefore in process, without every
A process is processed, the idler wheel 5 for re-starting clamping parts, more renewing just is needed, saves the quantity of idler wheel 5, saved cost,
Processing efficiency is improved, solves the problems, such as the poor dimensional precision caused by clamping repeatedly, increases numerical control single side and delays into mill
The discharge area of the nozzle of bed, increases the flow of the coolant liquid of ejection, and by being arranged on the crown locating piece 10 of fixture 9
Diversion trench 11, coolant liquid are sprayed onto the crown of low pressure guide vane by diversion trench 11, make what coolant liquid more concentrated to be sprayed onto crown,
Effective cooling effect is played to crown, prevents the generation of burn phenomenon, and the line by the way that gross blow hole ultra-soft grinding wheel 8 is rationally arranged
The feed speed of speed and low-pressure turbine blade 12 ensures processing efficiency under the premise of ensureing processing quality.
Claims (3)
1. a kind of crown processing unit (plant) of low-pressure turbine blade, which is characterized in that the crown processing dress of the low-pressure turbine blade
Set including：
Numerical control single side creep feed ginder, idler wheel, gross blow hole ultra-soft grinding wheel and fixture, idler wheel are mounted on repairing for numerical control single side creep feed ginder
On whole device roller shaft, grinding wheel is mounted on the main shaft of numerical control single side creep feed ginder, and fixture is mounted on numerical control single side creep feed ginder
On workbench；
The end face of the idler wheel is equipped with the first grinding area, and the side of the idler wheel is equipped with the second grinding area, the first grinding area
The structure in domain is identical as in the crown of low-pressure turbine blade, exhaust side sealing teeth, the structure of leading edge sealing teeth, the second grinding area
The structure in domain is identical as the structure of air inlet margin plate of the low-pressure turbine blade；
The end face of the gross blow hole ultra-soft grinding wheel is formed with by the first grinding area of the idler wheel and the finishing of the second grinding area
At crown machining profile；
The crown locating piece of the fixture is equipped with diversion trench, the shape of the groove profile of diversion trench and the crown of the low-pressure turbine blade
Shape is identical；
The numerical control single side creep feed ginder is additionally provided with pilot jet, the inlet of pilot jet and the numerical control single side creep feed ginder
Tank for coolant liquid outlet connection, the heavy caliber nozzle of numerical control single side creep feed ginder described in the liquid outlet face of pilot jet
Liquid outlet.
2. the crown processing unit (plant) of low-pressure turbine blade according to claim 1, which is characterized in that the fixture further includes
Bottom plate, riser, tenon tooth locating piece, integral shroud compressing member and tenon listrium compressing member；
Riser is bolted on bottom plate and vertical with bottom plate, and the crown locating piece of the fixture is mounted on institute by bolt
One end of the separate bottom plate of riser is stated, tenon tooth locating piece is mounted on the riser close to one end of the bottom plate；Integral shroud compressing member
The upside of the riser is mounted on by bolt, tenon listrium compressing member is mounted on the downside of the riser by bolt.
3. a kind of crown processing unit (plant) using the low-pressure turbine blade described in any one of claim 1 to 2 claim is ground
The method for cutting the crown of low-pressure turbine blade, which is characterized in that the method includes：
The hand line nozzle of the numerical control single side creep feed ginder is replaced with heavy caliber nozzle by step 1；
The low-pressure turbine blade is mounted on the fixture by step 2, and the basin of the low-pressure turbine blade is fixed to sawtooth crown
Plane is positioned with the crown locating piece, makes the slot of the crown of low-pressure turbine blade described in the diversion trench face on crown locating piece
Body；
Step 3, the position for adjusting heavy caliber nozzle make the liquid outlet of heavy caliber nozzle be directed at the diversion trench；
Step 4, setting corase grinding parameter and fine grinding parameter, when corase grinding, the grinding linear velocity of the gross blow hole ultra-soft grinding wheel is set as
The feed speed of 15~18m/s, the low-pressure turbine blade are set as 30~45mm/min, roughly grind more than the processing reserved for fine grinding
Amount is set as 0.2~0.3mm；When fine grinding, the grinding linear velocity of the gross blow hole ultra-soft grinding wheel is set as 15~18m/s, described
The feed speed of low-pressure turbine blade is set as 50~70mm/min；
Step 5 starts the numerical control single side creep feed ginder, and the heavy caliber nozzle is described to the diversion trench spray cooling liquid
Gross blow hole ultra-soft grinding wheel described in roller grinding, the gross blow hole ultra-soft grinding wheel from the low-pressure turbine blade close to diversion trench one
It holds to the other end and is ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611049348.5A CN106737011B (en) | 2016-11-25 | 2016-11-25 | A kind of the crown processing unit (plant) and method of low-pressure turbine blade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611049348.5A CN106737011B (en) | 2016-11-25 | 2016-11-25 | A kind of the crown processing unit (plant) and method of low-pressure turbine blade |
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| CN106737011B true CN106737011B (en) | 2018-07-13 |
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| CN107457615B (en) * | 2017-09-04 | 2019-05-24 | 中国航发南方工业有限公司 | The grinding processing method of turbo blade step surface |
| CN108356485B (en) * | 2018-01-31 | 2019-12-13 | 中国航发动力股份有限公司 | Method for machining small part with tenon teeth |
| CN110497250B (en) * | 2019-06-14 | 2021-03-19 | 成都和鸿科技有限公司 | Machining method for arc and end face of guide blade of turbine of small gas turbine |
| CN111890133B (en) * | 2020-08-31 | 2021-05-25 | 成都和鸿科技有限公司 | Processing method of palm tree-shaped tenon teeth |
| CN112936016A (en) * | 2021-02-09 | 2021-06-11 | 中国航发哈尔滨东安发动机有限公司 | Engine rotor blade tip processingequipment |
| CN113478262A (en) * | 2021-07-20 | 2021-10-08 | 中国航发航空科技股份有限公司 | Turbine blade sealing tooth machining clamp and clamping method thereof |
| CN116026265B (en) * | 2023-03-28 | 2023-06-09 | 沈阳强航时代精密科技有限公司 | Method for detecting low-pressure turbine blade sawtooth type blade crowns on three-coordinate measuring machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4903679A (en) * | 1988-10-14 | 1990-02-27 | Westinghouse Electric Corp. | Dressing of grinding wheels |
| CN104369020B (en) * | 2014-11-13 | 2017-06-06 | 四川成发航空科技股份有限公司 | A kind of fixture for high temperature alloy precision castings blade processing |
| CN204546195U (en) * | 2015-03-19 | 2015-08-12 | 济宁市市中区任航航模器材厂 | A kind of model aircraft screw thickness profile copy grinding device |
| CN204700753U (en) * | 2015-06-03 | 2015-10-14 | 北京宏大峰钻石机械有限责任公司 | A kind of blade hat top one-shot forming roller |
| CN105538096B (en) * | 2015-12-10 | 2018-11-27 | 中国南方航空工业(集团)有限公司 | Blade tenon clamp |
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