CN107813247A - The method of screw-down torque is applied to the nut at narrow space position when aero-engine is assembled - Google Patents
The method of screw-down torque is applied to the nut at narrow space position when aero-engine is assembled Download PDFInfo
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- CN107813247A CN107813247A CN201711201671.4A CN201711201671A CN107813247A CN 107813247 A CN107813247 A CN 107813247A CN 201711201671 A CN201711201671 A CN 201711201671A CN 107813247 A CN107813247 A CN 107813247A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000013461 design Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims description 27
- 238000004364 calculation method Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 4
- 238000012935 Averaging Methods 0.000 claims description 2
- 230000010076 replication Effects 0.000 claims 1
- 238000005299 abrasion Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
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- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
It is as follows the step of this method the invention provides the method for applying screw-down torque during a kind of assembling of aero-engine to the nut at narrow space position：Locus design adaptor according to residing for the nut of screw-down torque to be applied, the structure of adaptor should meet that narrow space position and interference position can be avoided when applying screw-down torque to nut；Calculate using the screw-down torque that torque wrench should apply in theory after adaptor switching, draw screw-down torque check plot, determined according to screw-down torque check plot using the screw-down torque that torque wrench should actually apply after adaptor switching；The torque wrench being connected on adaptor is exerted a force to apply screw-down torque to the nut of screw-down torque to be applied, stops force when screw-down torque meets the requirements, that is, completes the application to the screw-down torque of nut.This method can solve the problems, such as aero-engine because nut present position is complicated, narrow space or in the presence of interference in the case of nut be difficult to fasten it is firm.
Description
Technical field
The invention belongs to Air Fitter skill field, and nut is applied when being related to a kind of assembling for aero-engine
Add the method for screw-down torque, this method is applied to spaces such as aeroengine rotor inner chamber self-locking nut, pipe joint nuts
Nut that is narrow and small and interference position being present applies screw-down torque.
Background technology
Employ substantial amounts of nut in aero-engine to be connected with bolts assemblies, the assembling of nut is aero-engine assembling
During one of important assembly process.The mode of nut is tightened when aero-engine is assembled at present two kinds, and one kind is according to angle
Spend, such as such as 120 °~240 ° are tightened, another kind is to be twisted according to torque requirement using torque wrench (torque spanner)
Tightly.Due to process route and engine structure difference, it is some need apply torque nut locus because residing for it is narrow and small or
There is interference in present position, because of the in irregular shape of workpiece for example, aeroengine rotor inner chamber needs to apply torque assembling
Nut residing for position space it is very narrow and small and because workpiece local shape irregularly exist interference, can not directly use limiter
Spanner is tightened, and this can be caused, and the fastening of assembling position is not firm, and situations such as easily occurring loosening or be poorly sealed close, these are all
The assembling quality and security performance of engine can be had a strong impact on.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to the spiral shell at narrow space position when aero-engine is assembled
The method that mother applies screw-down torque, to solve aero-engine because nut present position is complicated, narrow space is either deposited
It is difficult to fasten the problem of firm in nut in the case of interference.
The method of the present invention on the basis of following principle based on being improved to obtain：
The force analysis figure of screw-down torque is applied as shown in figure 1, Fig. 1 to nut using torque wrench after adaptor switching
In, N points represent the nut center of screw-down torque to be applied, and P points represent the tie point of adaptor and torque wrench, by limiter
The arm of force of spanner is denoted as L1, L will be denoted as using the virtual arm of force after adaptor switching2, the switching at nut center to adaptor is pulled
The distance at hand connecting hole center is denoted as L3, the power applied using torque wrench after adaptor switching is denoted as F1, adaptor will be used
After switching with corresponding virtual arm of force L2The power for tightening nut applied is denoted as F2, α is by F1F after decomposition2With F1Angle, θ NP
The angle of (N points and P points line) between the arm of force of torque wrench.
The screw-down torque that the nut of screw-down torque to be applied is determined according to design requirement is M2, after adaptor switching will be used
The screw-down torque that torque wrench should apply in theory is M1, then：
M2/M1=(F2×L2)/(F1×L1)；
F1Cos α=F2
It can be obtained by the conversion of foregoing two formula, (M1/L1) × cos α=M2/L2
In conjunction with the cosine law, cos α=(L1 2+L2 2-L3 2)/2L1·L2
Comprehensive aforementioned formula conversion can obtain, M2/M1=(L1 2+L2 2-L3 2)/2L1 2
According to the arm of force L of specific requirement during engine assembly, wherein torque wrench1Belong to given value, M2Set to be known
Count parameter, L3It can be obtained by the distance for measuring N points and P points, L2Can be by measuring or being calculated for the virtual arm of force.
, can be to M when designing the structure of adaptor in order to reduce the amount of calculation during use1Calculation
Simplified to reduce amount of calculation, for example, when designing the structure of adaptor and installation torque wrench, make screw-down torque to be applied
Nut center, adaptor and torque wrench tie point P and torque wrench applying power F1Point this three point on a straight line, i.e., by Fig. 1
In θ=180 °, now L2=L1+L3, then, M2/M1=(L1 2+L2 2-L3 2)/2L1 2M can be reduced to2/M1=1+L3/L1.Cause
Adaptor can be designed as the abnormity knot such as c-type, S types, U-shaped by this according to the locus residing for the nut of screw-down torque to be applied
Structure.The center in the application force of torque wrench and nut center superposition can also be caused into M in the case where ensureing θ=180 °2
=M1。
The method of screw-down torque, step are applied to the nut at narrow space position during aero-engine assembling provided by the invention
It is rapid as follows：
1) the locus design adaptor according to residing for the nut of screw-down torque to be applied, the structure of adaptor should meet
Narrow space position and interference position can be avoided when applying screw-down torque to nut, one end of adaptor is provided with twists with to be applied
The nut attaching nut connecting hole of clamp force square, the other end are provided with the torque wrench connecting hole coordinated with torque wrench connector；
2) the nut connecting hole of adaptor is connected with the nut of screw-down torque to be applied, connects the torque wrench of adaptor
Connect hole to be connected with torque wrench, the screw-down torque that the nut of screw-down torque to be applied is determined according to design requirement is M2, by limiter
The arm of force of spanner is denoted as L1, L will be denoted as using the virtual arm of force after adaptor switching2, the switching at nut center to adaptor is pulled
The distance at hand connecting hole center is denoted as L3, the screw-down torque that should be applied in theory using torque wrench after adaptor switching is remembered
Make M1, M1Calculation see formula (1),
M1=2L1 2·M2/(L1 2+L2 2-L3 2) (1)
In formula (1), M1And M2Unit be Nm, L1,L2And L3Unit be m, M2,L1,L2And L3It is given value；
Due to fit tolerance be present using each junction after adaptor connection so that torque wrench after being transferred using adaptor
The screw-down torque M that should actually apply3Not necessarily with M1It is equal, therefore experiment need to be carried out and draw screw-down torque check plot, according to stubborn
Clamp force square check plot is determined using the screw-down torque M that torque wrench should actually apply after adaptor switching3；
3) torque wrench being connected on adaptor is exerted a force to apply screw-down torque to the nut of screw-down torque to be applied,
When screw-down torque reaches the screw-down torque M of step 2) determination3When stop force, that is, complete the application to the screw-down torque of nut.
In the step 2) of above-mentioned technical proposal, the method for drafting of screw-down torque check plot is as follows：
1. the screw-down torque M of the nut of screw-down torque to be applied2It is divided into since 0 according to 0.1~1.0Nm interval
Some scale values, each scale value is denoted as 0, M successively21, M22..., M2n-1, M2n, wherein M2n=M2；
2. directly test nut is carried out tightening operation using torque wrench, when screw-down torque reaches M21When, mark nut
Position, then the nut connecting hole of adaptor is connected with test nut, pulls the torque wrench connecting hole and limiter of adaptor
Hand is connected, and test nut is carried out tightening operation by adaptor using torque wrench, when nut location reaches mark position,
The torque reading of now torque wrench is recorded, is denoted as M11；
According to the aforementioned operation of the step, measure directly test nut is carried out tightening operation when using torque wrench respectively
When clamp force square be M22..., M2n-1, M2nWhen, it is corresponding that test nut is carried out tightening operation by adaptor using torque wrench
When torque wrench torque reading M12..., M1n-1, M1n；
3. to use screw-down torque when torque wrench directly tighten operation to test nut as abscissa, to use
The power of torque wrench when nut location reaches mark position when torque wrench carries out tightening operation by adaptor to test nut
Square reading is ordinate, is that the origin of coordinates builds rectangular coordinate system with (0,0), by (M21, M11) ..., (M2n-1, M1n-1), (M2n,
M1n) be shown in rectangular coordinate system and by (M21, M11) ..., (M2n-1, M1n-1), (M2n, M1n) connect into smooth curve and twisted
Clamp force square check plot.
In order to improve the accuracy of drawn screw-down torque check plot, adaptor pair is passed through using torque wrench in measure
The torque reading M of torque wrench when test nut tighten operation12..., M1n-1, M1nWhen, M12..., M1n-1, M1nCounterpoise
Repetition measurement determines 3~5 times and averages and draw screw-down torque check plot according to the operation of step 3. with averaging of income value.
It is as follows as a preferred technical solution of the present invention, its step：
1) the locus design adaptor according to residing for the nut of screw-down torque to be applied, the structure of adaptor should meet
Narrow space position and interference position can be avoided when applying screw-down torque to nut, one end of adaptor is provided with twists with to be applied
The nut attaching nut connecting hole of clamp force square, the other end are provided with the torque wrench connecting hole coordinated with torque wrench connector, turn
The center line of the nut connecting hole of fitting overlaps with the center line of torque wrench connecting hole；
2) the nut connecting hole of adaptor is connected with the nut of screw-down torque to be applied, connects the torque wrench of adaptor
Connect hole to be connected with torque wrench, the screw-down torque that the nut of screw-down torque to be applied is determined according to design requirement is M2, will use
The screw-down torque that torque wrench should apply in theory after adaptor switching is denoted as M1, M in theory2=M1, but using after adaptor
Cause actually M because junction has fit tolerance2Not necessarily with M1It is equal, therefore experiment need to be carried out and draw screw-down torque school
Figure is tested, is determined according to screw-down torque check plot using the screw-down torque M that torque wrench should actually apply after adaptor switching3；
The method for drafting of screw-down torque check plot is as described above；
3) torque wrench being connected on adaptor is exerted a force to apply screw-down torque to the nut of screw-down torque to be applied,
When screw-down torque reaches the screw-down torque M of step 2) determination3When stop force, that is, complete the application to the screw-down torque of nut.
In above-mentioned optimal technical scheme, the structure of the adaptor of use is as follows：
Adaptor is made up of right-angle connector and switching spanner, and the one end for spanner of transferring is provided with nut connecting hole, the other end
Provided with right-angle connector connecting hole, right-angle connector is made up of the cross bar and vertical pole for being mutually perpendicular to and being welded as a whole, cross bar
End is provided with torque wrench connecting hole, and the end of vertical pole is provided with what shape coordinated with the right-angle connector connecting hole transferred on spanner
The center of connecting portion, nut connecting hole and torque wrench connecting hole is on the same line.
In order to prevent because moment of torsion crosses the cross bar of the right-angle connector of ambassador's adaptor and vertical pole produces the distortion along axis, change
The situation of shape, preferably sets reinforcement on right-angle connector, and the both ends of reinforcement are respectively welded on cross bar and vertical pole.
In order to reduce the loss in power transmittance process, connecting portion and the right-angle connector connecting hole of switching wrench of vertical pole
Fit tolerance is preferably no more than 0.02mm.
In above-mentioned technical proposal, matching part can produce abrasion due to adaptor in use so that test drafting and twist
Screw-down torque corresponding relation in clamp force square check plot changes, therefore periodically (such as should make every time in use
With it is preceding or at interval of certain working day) repaint new screw-down torque check plot, to determine that each torque wrench should apply
Accurate screw-down torque, improve nut assembling stability and assembling quality.
Compared with prior art, the invention has the advantages that：
The invention provides apply the side of screw-down torque to the nut at narrow space position during a kind of assembling of aero-engine
Method, because this method can neatly design adaptor according to the locus residing for the nut of screw-down torque to be applied, to avoid
Narrow space position and interference position during assembling, thus the situation that this method is limited by nut present position is compared with prior art
It may be significantly smaller, scope of application prior art is wider, and this method also solves easily causes the fastening of assembling position using existing method
It is not firm, situations such as easily occurring loosening or be poorly sealed close, be advantageous to improve the assembling quality and security of aero-engine
Energy.
Brief description of the drawings
Fig. 1 is using the force analysis figure for applying screw-down torque after adaptor switching to nut using torque wrench；
Fig. 2 is that the position of the nut of the structure of aeroengine rotor inner chamber and screw-down torque to be applied in embodiment 1 shows
It is intended to；
Fig. 3 is after embodiment 1 installs adaptor in aeroengine rotor inner chamber on the nut of screw-down torque to be applied
Structural representation；
Fig. 4 is the structural representation of the right-angle connector of adaptor in embodiment 1；
Fig. 5 is Fig. 4 top view；
Fig. 6 is the structural representation of the switching spanner of adaptor in embodiment；
Fig. 7 is Fig. 6 profile；
In Fig. 2-7,1-right-angle connector, 2-switching spanner, 2-1-nut connecting hole, 2-2-right-angle connector connection
Hole, 3-cross bar, 3-1-torque wrench connecting hole, 4-reinforcement, 5-vertical pole, 5-1-connecting portion, 6-screwing force to be applied
The nut of square.
Fig. 8 is the screw-down torque check plot drawn in embodiment 1, in figure, M2nRepresent using torque wrench directly to test
Nut tighten screw-down torque during operation, M1nRepresent and test nut is carried out tightening behaviour by adaptor using torque wrench
The torque reading of torque wrench when nut location reaches mark position when making.
Embodiment
To narrow space position when being assembled by the following examples and to aero-engine of the present invention with reference to accompanying drawing
The method that nut applies screw-down torque is described further.
Embodiment 1
In the present embodiment, self-locking nut when being assembled to aero-engine positioned at rotor internal cavity applies screw-down torque, step
It is as follows：
1) position view of the nut of the structure of aeroengine rotor inner chamber and screw-down torque to be applied such as Fig. 2 institutes
Show, as shown in Figure 2, position space residing for the nut 6 of screw-down torque to be applied is very narrow and small when aero-engine is assembled, in rotor
Chamber diameter it is small and can not visual screw-down torque to be applied nut 6, and rotor disk in irregular shape in rotor internal cavity also be present
The interference of the parts such as the heart, therefore screw-down torque directly can not be applied to the nut using torque wrench.
Locus according to residing for the nut 6 of screw-down torque to be applied and doing in view of rotor internal cavity miscellaneous part
Relate to, adaptor can be designed as L-type or it is U-shaped by it from internal forwarding to rotor internal cavity outside, use adaptor to simplify
The screw-down torque M that torque wrench should apply in theory after switching1Calculation, adaptor is designed as to U-shaped form, its
Concrete structure is as follows：
As shown in Fig. 3-Fig. 7, adaptor is made up of right-angle connector 1 and switching spanner 2, and one end of switching spanner 2 is provided with
Nut connecting hole 2-1, the other end are provided with right-angle connector connecting hole 2-2, according to the structure of the nut 6 of screw-down torque to be applied,
It is 12 jiaos by nut connecting hole 2-1 structure setting, is pulled switching according to the shape of the rotor disk heart and thickness in rotor internal cavity
Hand is arranged to stairstepping to get out of the way interference position, and right-angle connector 1 is by the cross bar 3 and vertical pole 5 that are mutually perpendicular to and are welded as a whole
Composition, right-angle connector 1 are provided with reinforcement 4, and the both ends of reinforcement are respectively welded on cross bar 3 and vertical pole 5, the end of cross bar 3
Portion is provided with torque wrench connecting hole 3-1, nut connecting hole 2-1 and torque wrench connecting hole 3-1 center on the same line, root
According to the structure of the connector of torque wrench, torque wrench connecting hole is processed into four square holes that roughness is 1.6, because being limited at this
The application center line in force of torque wrench overlaps with the center line of nut, can not limit direction, and the end of vertical pole 5 is provided with shape
The connecting portion 5-1 coordinated with the right-angle connector connecting hole 2-2 on switching spanner, connecting portion 5-1 and the switching wrench 2 of vertical pole 5
Right-angle connector connecting hole 2-2 fit tolerance be no more than 0.02mm, to reduce the loss in power transmittance process.
2) the nut connecting hole of adaptor is connected with the nut of screw-down torque to be applied, connects the torque wrench of adaptor
Connect hole to be connected with torque wrench, the screw-down torque that the nut of screw-down torque to be applied is determined according to design requirement is M2, M2=
14Nm, the screw-down torque that should apply in theory using torque wrench after adaptor switching is denoted as M1, M in theory2=M1,
But use and cause actually M because junction has fit tolerance after adaptor2Not necessarily with M1It is equal, therefore need to be tested
Screw-down torque check plot is drawn, determines actually apply using torque wrench after adaptor switching according to screw-down torque check plot
Screw-down torque M3。
The method for drafting of screw-down torque check plot is as follows：
1. the screw-down torque M of the nut of screw-down torque to be applied2It is divided into since 0 according to 1.0Nm interval some
Scale value, each scale value is denoted as 0, M successively21, M22..., M2n-1, M2n, M21=1Nm, M22=2Nm, M23=3Nm,
M24=4Nm, M25=5Nm, M26=6Nm, M27=7Nm, M28=8Nm, M29=9Nm, M210=10Nm, M211
=11Nm, M212=12Nm, M213=13Nm, M214=14Nm.
2. directly carrying out tightening operation to test nut using torque wrench, when screw-down torque reaches 1Nm, spiral shell is marked
Female position, then the nut connecting hole of adaptor is connected with test nut, torque wrench connecting hole and limiter by adaptor
Spanner connects, and test nut is carried out tightening operation by adaptor using torque wrench, when nut location reaches mark position
When, the torque reading of now torque wrench is recorded, is denoted as M11；
According to the aforementioned operation of the step, measure directly test nut is carried out tightening operation when using torque wrench respectively
When clamp force square when being 2,3,4,5,6,7,8,9,10,11,12,13,14Nm, it is corresponding that adaptor pair is passed through using torque wrench
The torque reading M of torque wrench when test nut carries out tightening operation12..., M113, M114；
3. to use screw-down torque when torque wrench directly tighten operation to test nut as abscissa, to use
The power of torque wrench when nut location reaches mark position when torque wrench carries out tightening operation by adaptor to test nut
Square reading is ordinate, is that the origin of coordinates builds rectangular coordinate system in graph paper with (0,0), by (M21, M11) ..., (M214,
M114) be shown in rectangular coordinate system and by (M21, M11) ..., (M214, M114) connect into smooth curve obtain screw-down torque verification
Figure, as shown in Figure 8.It can be seen from Fig. 8, as the screw-down torque M of the nut according to design requirement screw-down torque to be applied2=
During 14Nm, torque wrench should actually apply after being transferred using adaptor screw-down torque M3=13.3Nm.
3) torque wrench being connected on adaptor is exerted a force to apply screw-down torque to the nut of screw-down torque to be applied,
When screw-down torque reaches the screw-down torque M of step 2) determination3When stop force, that is, complete the application to the screw-down torque of nut.
Due to adaptor in use, matching part can produce abrasion so that test and draw in screw-down torque check plot
Screw-down torque corresponding relation change, therefore should in use periodically (such as every time use before or at interval of one
Determine working day) new screw-down torque check plot is repainted, to determine accurate screw-down torque that each torque wrench should apply,
Improve the stability and assembling quality of nut assembling.
Claims (8)
- The method of screw-down torque is applied to the nut at narrow space position when 1. aero-engine is assembled, it is characterised in that step is such as Under：1) the locus design adaptor according to residing for the nut of screw-down torque to be applied, the structure of adaptor should meet right Nut can avoid narrow space position and interference position when applying screw-down torque, one end of adaptor is provided with and screwing force to be applied The nut attaching nut connecting hole of square, the other end are provided with the torque wrench connecting hole coordinated with torque wrench connector；2) the nut connecting hole of adaptor is connected with the nut of screw-down torque to be applied, the torque wrench connecting hole by adaptor It is connected with torque wrench, the screw-down torque that the nut of screw-down torque to be applied is determined according to design requirement is M2, by torque wrench The arm of force be denoted as L1, L will be denoted as using the virtual arm of force after adaptor switching2, the switching spanner at nut center to adaptor is connected The distance for connecing hole center is denoted as L3, the screw-down torque that should be applied in theory using torque wrench after adaptor switching is denoted as M1, M1Calculation see formula (1),M1=2L1 2·M2/(L1 2+L2 2-L3 2) (1)In formula (1), M1And M2Unit be Nm, L1,L2And L3Unit be m, M2,L1,L2And L3It is given value；Due to fit tolerance be present using each junction after adaptor connection so that torque wrench is actual after being transferred using adaptor The screw-down torque M that should apply3Not necessarily with M1It is equal, therefore experiment need to be carried out and draw screw-down torque check plot, according to screwing force Square check plot is determined using the screw-down torque M that torque wrench should actually apply after adaptor switching3；3) torque wrench being connected on adaptor is exerted a force to apply screw-down torque to the nut of screw-down torque to be applied, when stubborn Clamp force square reaches the screw-down torque M of step 2) determination3When stop force, that is, complete the application to the screw-down torque of nut.
- The side of screw-down torque is applied to the nut at narrow space position when 2. aero-engine is assembled according to claim 1 Method, it is characterised in that the method for drafting of screw-down torque check plot is as follows in step 2)：1. the screw-down torque M of the nut of screw-down torque to be applied2It is divided into since 0 according to 0.1~1.0Nm interval some Scale value, each scale value is denoted as 0, M successively21, M22..., M2n-1, M2n, wherein M2n=M2；2. directly test nut is carried out tightening operation using torque wrench, when screw-down torque reaches M21When, nut location is marked, Then the nut connecting hole of adaptor is connected with test nut, connects the torque wrench connecting hole and torque wrench of adaptor Connect, test nut is carried out tightening operation by adaptor using torque wrench, when nut location reaches mark position, record The now torque reading of torque wrench, is denoted as M11；According to the aforementioned operation of the step, measure respectively tight when directly carrying out tightening operation to test nut using torque wrench Torque is M22..., M2n-1, M2nWhen, it is corresponding that test nut is carried out tightening the operation time limit by adaptor using torque wrench The torque reading M of torque wrench12..., M1n-1, M1n；3. to use screw-down torque when torque wrench directly tighten operation to test nut as abscissa, with using limiter The torque of torque wrench is read when nut location reaches mark position when spanner carries out tightening operation by adaptor to test nut Number is ordinate, is that the origin of coordinates builds rectangular coordinate system with (0,0), by (M21, M11) ..., (M2n-1, M1n-1), (M2n, M1n) It is shown in rectangular coordinate system and by (M21, M11) ..., (M2n-1, M1n-1), (M2n, M1n) connect into smooth curve and obtain screwing force Square check plot.
- The side of screw-down torque is applied to the nut at narrow space position when 3. aero-engine is assembled according to claim 2 Method, it is characterised in that the torque wrench when measure carries out tightening operation by adaptor using torque wrench to test nut Torque reading M12..., M1n-1, M1nWhen, M12..., M1n-1, M1nEqual replication is averaged and with averaging of income for 3~5 times Value draws screw-down torque check plot according to the operation of step 3..
- 4. screw-down torque is applied to the nut at narrow space position when being assembled according to 1 or 2 or 3 aero-engine of claim Method, it is characterised in that screw-down torque check plot should be periodically repainted during adaptor use.
- 5. screw-down torque is applied to the nut at narrow space position when being assembled according to 1 or 2 or 3 aero-engine of claim Method, it is characterised in that the center line of the nut connecting hole (2-1) of adaptor and the center of torque wrench connecting hole (3-1) Line overlaps, now M in theory2=M1, due to fit tolerance be present using each junction after adaptor connection so that using switching The screw-down torque M that torque wrench should actually apply after part switching3Not necessarily with M1It is equal, therefore experiment drafting need to be carried out and tightened Torque check plot, determined according to screw-down torque check plot using the screwing force that torque wrench should actually apply after adaptor switching Square M3。
- The side of screw-down torque is applied to the nut at narrow space position when 6. aero-engine is assembled according to claim 5 Method, it is characterised in that the structure of adaptor is as follows：Adaptor is made up of right-angle connector (1) and switching spanner (2), and one end of switching spanner (2) is provided with nut connecting hole (2- 1), the other end is provided with right-angle connector connecting hole (2-2), and right-angle connector (1) is by the cross bar that is mutually perpendicular to and is welded as a whole (3) formed with vertical pole (5), the end of cross bar (3) is provided with torque wrench connecting hole (3-1), the end of vertical pole (5) be provided with shape and The connecting portion (5-1) that the right-angle connector connecting hole (2-2) transferred on spanner coordinates, nut connecting hole (2-1) and torque wrench The center of connecting hole (3-1) is on the same line.
- The side of screw-down torque is applied to the nut at narrow space position when 7. aero-engine is assembled according to claim 6 Method, it is characterised in that right-angle connector (1) is provided with reinforcement (4), and the both ends of reinforcement are respectively welded at cross bar (3) and vertical pole (5) on.
- 8. screw-down torque is applied to the nut at narrow space position when being assembled according to the aero-engine of claim 6 or 7 Method, it is characterised in that the cooperation of the connecting portion (5-1) of vertical pole (5) and the right-angle connector connecting hole (2-2) of switching wrench (2) Tolerance is no more than 0.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711201671.4A CN107813247B (en) | 2017-11-27 | 2017-11-27 | Apply the method for screw-down torque when aero-engine is assembled to the nut at narrow space position |
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| CN109128231A (en) * | 2018-10-19 | 2019-01-04 | 中国航发航空科技股份有限公司 | A kind of lathe processing tool bit of aero-engine compressor multistage leaf dish weld assembly small space |
| CN109352564A (en) * | 2018-11-23 | 2019-02-19 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of blind assembling structure limiter device for screwing up of rotor |
| CN109356662A (en) * | 2018-11-27 | 2019-02-19 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of process of aero-engine Low Pressure Turbine Rotor assembly |
| CN112045405A (en) * | 2020-09-22 | 2020-12-08 | 沈阳航空航天大学 | Fast and large torque tightening device and tightening method for blind cavity in narrow and long space |
| CN113681495A (en) * | 2021-09-06 | 2021-11-23 | 中国化学工程第三建设有限公司 | Tightening device, manufacturing method and tightening method for fixed-torque bolt in narrow space |
| CN114083279A (en) * | 2021-12-13 | 2022-02-25 | 中国航发南方工业有限公司 | Symmetrical fastener tightening device |
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| CN103528747A (en) * | 2013-09-30 | 2014-01-22 | 航天东方红卫星有限公司 | Torque measurement transfer tool and method |
| CN106181878A (en) * | 2016-06-28 | 2016-12-07 | 中国南方航空工业(集团)有限公司 | Axial workpiece device for screwing up and method |
| CN104215381B (en) * | 2014-07-28 | 2017-01-04 | 北京强度环境研究所 | Screw-down torque scaling method installed by the spacing band of body |
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| CN1915604A (en) * | 2006-09-08 | 2007-02-21 | 渤海船舶重工有限责任公司 | Assistant measurement unit for moment wrench in narrow operation area |
| CN103528747A (en) * | 2013-09-30 | 2014-01-22 | 航天东方红卫星有限公司 | Torque measurement transfer tool and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109128231A (en) * | 2018-10-19 | 2019-01-04 | 中国航发航空科技股份有限公司 | A kind of lathe processing tool bit of aero-engine compressor multistage leaf dish weld assembly small space |
| CN109352564A (en) * | 2018-11-23 | 2019-02-19 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of blind assembling structure limiter device for screwing up of rotor |
| CN109356662A (en) * | 2018-11-27 | 2019-02-19 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of process of aero-engine Low Pressure Turbine Rotor assembly |
| CN109356662B (en) * | 2018-11-27 | 2021-06-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Process method for assembling low-pressure turbine rotor of aircraft engine |
| CN112045405A (en) * | 2020-09-22 | 2020-12-08 | 沈阳航空航天大学 | Fast and large torque tightening device and tightening method for blind cavity in narrow and long space |
| CN113681495A (en) * | 2021-09-06 | 2021-11-23 | 中国化学工程第三建设有限公司 | Tightening device, manufacturing method and tightening method for fixed-torque bolt in narrow space |
| CN114083279A (en) * | 2021-12-13 | 2022-02-25 | 中国航发南方工业有限公司 | Symmetrical fastener tightening device |
| CN114083279B (en) * | 2021-12-13 | 2022-11-29 | 中国航发南方工业有限公司 | Symmetrical fastener tightening device |
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| CN107813247B (en) | 2019-03-01 |
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