CN106636563B - A kind of polynary control method of reversed laser peening and device - Google Patents
A kind of polynary control method of reversed laser peening and device Download PDFInfo
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- CN106636563B CN106636563B CN201610964052.XA CN201610964052A CN106636563B CN 106636563 B CN106636563 B CN 106636563B CN 201610964052 A CN201610964052 A CN 201610964052A CN 106636563 B CN106636563 B CN 106636563B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
The embodiment of the invention discloses a kind of reversed polynary control method and device of laser peening, the skin-material modification characteristic generated using laser peening, rationally design laser peening processing region area and impact depth, build lamination alternation of cross-section part Young's modulus, to change intrinsic frequency, realize the dual purpose strengthened with frequency modulation processing, and for the malformation problem of laser peening processing generally existing, using mechanical model modeling analysis, it is preferred that school shape region and parameter, the reparation of part deformation is realized by Opposite side loading shock loading, solve the problems, such as laser peening accessory size stability, and every demand of rotation class part can be met, it is especially suitable for bearing the high speed rotation part of aerodynamic loading, such as gas turbine blades, blade of aviation engine etc..
Description
Technical field
The present invention relates to laser peening field more particularly to a kind of polynary control method of reversed laser peening and devices.
Background technology
Due to the effect of centrifugal force and inertia force when high speed rotation part time job, each particle bears alternate stress load in material
Lotus is also easy to produce crackle or prominent although the stress that part is born is less than the yield point of material after the work of long period
The fatigue failure being broken completely so occurs.According to statistics, about 80% or more belong to fatigue rupture in machine components failure, and
And do not deformed significantly before fatigue rupture, so fatigue rupture often results in major accident, such as gas turbine parking, aircraft hair
Motivation flame-out in flight etc..Therefore, on the one hand bearing the part of alternating load will select the preferable material of fatigue strength to manufacture, separately
On the one hand it needs to carry out material reinforcement processing.
When gas turbine blades, blade of aviation engine high speed rotational operation, blade is that blade is caused to shake with train resonance
The main reason for dynamic fatigue failure.Therefore there is strict demand to vibration frequency of blade：For example, the same grade blade installation of gas turbine
Shi Bixu is by the control control of frequency dispersion degree within 8%.In another example the CCAR33.83 vibration examinations of aero-engine seaworthiness clause
Part regulation is tested, vibration stress analysis, vibration-mode analysis and vibration test must be carried out during blade design, is adjusted
Frequently the experiment process of-resonance nargin analysis-modal test-dynamic stress rest and assessment, ensures under each working speed of blade altogether
Shake nargin >=10%, endurance percentage >=30%.Therefore, blade not only needs frequency modulation processing to ensure resonance nargin, and
It needs intensive treatment to ensure dynamic stress nargin, makes off-resonance frequence in the blade working range of speeds, meet projected life requirement.
In conclusion revolution at a high speed part, especially blade need carry out intensive treatment and frequency modulation processing could meet it is whole
Machine design requirement.Widely used mechanic shot peening processing at present is a kind of surface intensified technique, for improve part machinery intensity with
And wearability, antifatigue and corrosion resistance etc., but there is reinforcing dead angle in mechanic shot peening, reinforcing effect randomness is unstable, work
The shortcomings of skill parameter more difficult formulation, it is difficult to the blade of intensive treatment complex contour.Current vane frequency modulation mainly uses structure to finely tune
Method changes barycenter or adjusts overall structure, such as reinstalls blade improvement installation quality, changes blade group number, leaf top brill
Hole, the firmness of the connection etc. for increasing convex shoulder, adjusting blade and leaf dish, the above adjusting method is to be to change part quality/structure
Means cannot adjust Natural Frequency of Blade from essence, and frequency offset is uncontrollable, it is difficult to the high part of band requirement is handled,
Such as aeroengine fan blades, compressor blade.
Therefore it provides one kind based on Laser Peening Technology, realizing that high speed rotation part material is strengthened, intrinsic frequency changes
The control method and device of change and the multiple elements design processing of control form factor are those skilled in the art's problems to be solved.
Invention content
An embodiment of the present invention provides a kind of reversed polynary control method and device of laser peening, overcome existing high speed rotation
Turn reinforcing, frequency modulation and the nonsynchronous problem of school shape technique of part, and is realized using laser peening reinforcing, frequency modulation and school shape ability
The polynary processing of part, the resonance nargin in lift structure fatigue life, guarantee part time job rotating speed.
An embodiment of the present invention provides a kind of reversed polynary control methods of laser peening, including：
S1：According to treat parts processed carry out the laser peening that structural analysis and residual stress test obtain strengthen index and
Technological parameter determines the laser peening strengthening region of the pending part；
S2：Strengthen parameter according to preset laser peening and laser is carried out to the laser peening strengthening region of the pending part
Shot peening, the part after being strengthened；
S3：It is sampled to obtain specimen part to the part after the reinforcing, then fatigue life, residual is carried out to specimen part
Whether residue stress meets the off-line test of preset index, if qualified, executes S4, if index is unqualified, executes S1；
S4：Resonance nargin analysis is carried out to the part after the reinforcing based on Campbell figures, and abundant according to the resonance
Degree analysis carries out intrinsic frequency adjustment to the part after the reinforcing so that the operation interval satisfaction of the part after the reinforcing is set
Meter requires, and obtains the part after frequency modulation；
S5：Judge whether the part laser peening frequency modulation mass index after the frequency modulation is qualified, if resonance nargin is not less than
10% and endurance percentage be not less than 30%, then execute S6, if resonance nargin be less than 10% or endurance percentage it is small
In 30%, then S4 is executed；
S6：Part school shape region is carried out to the part after the frequency modulation to choose, and one is applied to the part school shape region
Reverse impact load, to carry out Deformation Repair to the part after the frequency modulation；
S7：Judge whether the part school form quality amount after the shape of school is qualified, if the accessory size after the school shape is qualified, part
Processing terminates, if unqualified, executes S6.
Preferably, described that laser peening strengthening region of the parameter to the pending part is strengthened according to preset laser peening
Laser peening intensive treatment is carried out, the part after being strengthened specifically includes：
The surface layer of the pending part is coated with absorbed layer, applies water constraint layer to the surface layer of the pending part,
Strengthen parameter further according to preset laser peening and laser peening reinforcing is carried out to the laser peening strengthening region of the pending part
Processing, the part after being strengthened.
Preferably, described that resonance nargin analysis is carried out to the part after the reinforcing based on Campbell figures, and according to institute
It states resonance nargin analysis and intrinsic frequency adjustment is carried out to the part after the reinforcing so that the workspace of the part after the reinforcing
Between meet design requirement, obtain further include before the part after frequency modulation：
Model analysis is carried out to the part after the reinforcing, it is intrinsic under different rotating speeds to obtain the part after the reinforcing
Frequency and the vibration shape.
Preferably, described that resonance nargin analysis is carried out to the part after the reinforcing based on Campbell figures, and according to institute
It states resonance nargin analysis and intrinsic frequency adjustment is carried out to the part after the reinforcing so that the workspace of the part after the reinforcing
Between meet design requirement, obtain the part after frequency modulation and specifically include：
Using the rotating speed of the part after the reinforcing as abscissa, frequency is ordinate, is drawn and the part after the reinforcing
Corresponding Campbell figures carry out resonance nargin analysis based on the Campbell figures to the part after the reinforcing；
The surface layer of part after the reinforcing is coated with absorbed layer, applies water constraint to the surface layer of the part after the reinforcing
Layer, by the way that part zone area and laser peening impact depth is arranged, after being analyzed to the reinforcing according to the resonance nargin
Part carries out intrinsic frequency adjustment so that the operation interval of the part after the reinforcing meets design requirement, after obtaining frequency modulation
Part.
Preferably, the part to after the frequency modulation carries out the selection of part school shape region, to the part school shape region
Apply a reverse impact load, is specifically included with carrying out Deformation Repair to the part after the frequency modulation：
School shape mechanical model is established with the part after frequency modulation, by numerical simulation, according to the school shape mechanical model to institute
It states the part after frequency modulation and carries out the selection of part school shape region, then a reverse impact load is applied to the part school shape region,
To carry out Deformation Repair to the part after the frequency modulation.
Preferably, the resonance nargin is obtained by a calculation formula, and the calculation formula is：
Wherein, wherein fdFor part in rotating speed n practical dynamic frequency, unit Hz；N is that design speed unit is r/min；
KnFor rotating speed multiplying power.
Preferably, the embodiment of the present invention additionally provides a kind of polynary control device of reversed laser peening, which is characterized in that packet
It includes：Five degree of freedom workbench, motion controller, laser, laser controller, optical measurement camera, graphics process work station and
Host；
Described motion controller one end is connected with the five degree of freedom workbench, the motion controller other end and described
Host connects；
Described laser controller one end is connected with the laser, and the laser controller other end and the host connect
It connects；
Graphics process work station one end is connected with the optical measurement camera, the graphics process work station other end
It is connected with the host.
Wherein, host treats the laser spray that parts processed carries out structural analysis and residual stress test obtains for basis
Ball strengthens index and technological parameter, determines the laser peening strengthening region of the pending part；
Host is additionally operable to strengthen parameter according to preset laser peening, using laser to the laser of the pending part
Shot peening strengthening region carries out laser peening intensive treatment, the part after being strengthened；
Host is additionally operable to be sampled to obtain specimen part to the part after the reinforcing, then is carried out to specimen part tired
Whether labor service life, residual stress meet the off-line test of preset index, if qualified, based on Campbell figures to described strong
Part after change carries out resonance nargin analysis, and according to the resonance nargin analysis and utilization laser to the part after the reinforcing
Carry out intrinsic frequency adjustment so that the operation interval of the part after the reinforcing meets design requirement, obtains the part after frequency modulation；
Host is additionally operable to judge whether the part laser peening frequency modulation mass index after the frequency modulation is qualified, if resonance is abundant
Degree is not less than 10% and endurance percentage is not less than 30%, then carries out the choosing of part school shape region to the part after the frequency modulation
It takes, one reverse impact load is applied to the part school shape region using laser, to be carried out to the part after the frequency modulation
Deformation Repair；
Host is additionally operable to judge that the part school form quality amount after the shape of school is by optical measurement camera and graphics process work station
No qualification, if the accessory size after the school shape is qualified, part processing terminates.
Preferably, a kind of reversed polynary control device of laser peening provided in an embodiment of the present invention further includes：Painting water spray pipe,
Modal analysis system, acceleration transducer；
The painting water spray pipe is connected with described laser controller one end, and the laser controller other end connects with the host
It connects；
Described modal analysis system one end is connected with the acceleration transducer, the modal analysis system other end and institute
State host connection.
Preferably, the five degree of freedom workbench includes：Fixture integrated and counter weight base.
Preferably, the modal analysis system includes：Modification amplifier, elastic excitation hammer, signal analyzer and analysis are soft
Part.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages：
An embodiment of the present invention provides a kind of polynary control method of reversed laser peening and devices, wherein the reversed laser
The polynary control method of shot-peening includes：S1：The laser that structural analysis and residual stress test obtain is carried out according to parts processed is treated
Shot peening strengthening index and technological parameter determine the laser peening strengthening region of the pending part；S2：It is sprayed according to preset laser
Ball strengthens parameter and carries out laser peening intensive treatment to the laser peening strengthening region of the pending part, after being strengthened
Part；S3：Part after the reinforcing is sampled to obtain specimen part, then fatigue life, remnants are carried out to specimen part
Whether stress meets the off-line test of preset index, if qualified, executes S4, if index is unqualified, executes S1；S4：
Resonance nargin analysis is carried out to the part after the reinforcing based on Campbell figures, and is analyzed to described according to the resonance nargin
Part after reinforcing carries out intrinsic frequency adjustment so that the operation interval of the part after the reinforcing meets design requirement, obtains
Part after frequency modulation；S5：Judge whether the part laser peening frequency modulation mass index after the frequency modulation is qualified, if resonance nargin is not
Less than 10% and endurance percentage is not less than 30%, then executes S6, if resonance nargin is less than 10% or endurance percentage
Than being less than 30%, then S4 is executed；S6：Part school shape region is carried out to the part after the frequency modulation to choose, to part school shape
Region applies a reverse impact load, to carry out Deformation Repair to the part after the frequency modulation；S7：Judge the part after the shape of school
Whether school form quality amount is qualified, if the accessory size after the school shape is qualified, part processing terminates, if unqualified, executes S6.
The skin-material that rotating part is carried out using the knock wave mechanics effect of induced with laser is strengthened, and noncontact processing is belonged to, and strengthens effect
Fruit is notable.The present invention utilizes the skin-material modification characteristic that laser peening generates, and rationally designs laser peening processing region area
And impact depth, lamination alternation of cross-section part Young's modulus is built, to change intrinsic frequency, realizes and strengthens and frequency modulation processing
Dual purpose, and for the malformation problem of laser peening processing generally existing, using mechanical model modeling analysis, preferably school
Shape region and parameter realize the reparation of part deformation by Opposite side loading shock loading, solve laser peening accessory size and stablize
Property problem, and can meet rotation class part every demand, be especially suitable for bearing the high speed rotation part of aerodynamic loading, such as
Gas turbine blades, blade of aviation engine etc..
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of flow diagram of the reversed polynary control method of laser peening provided in an embodiment of the present invention；
Fig. 2 is a kind of another flow diagram of the reversed polynary control method of laser peening provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of the reversed polynary control device of laser peening provided in an embodiment of the present invention；
Fig. 4 is blade of aviation engine strengthening region schematic diagram；
Fig. 5 is blade of aviation engine vibration analysis Campbell figures；
Fig. 6 is blade of aviation engine frequency modulation area schematic；
Fig. 7 is that blade of aviation engine reversely controls shape schematic diagram.
Wherein, it is marked in figure as described below：
1. 2. five degree of freedom workbench of pending part, 3. motion controller 4. applies 5. laser of water spray pipe, 6. laser
10. graphics process work station of controller 7. acceleration transducer, 8. modal analysis system, 9. optical measurement camera, 11. host
12. 13. leading edge 14. of blade exhaust 15. blade root of side, 16. blade face frequency modulation region, 17. blade center area, 18. 1-2 ranks are shaken
19. deformable blade direction of type maximum displacement boundary, 20. laser peening school shape loading direction
Specific implementation mode
An embodiment of the present invention provides a kind of reversed polynary control method and device of laser peening, overcome existing high speed rotation
Turn reinforcing, frequency modulation and the nonsynchronous problem of school shape technique of part, and is realized using laser peening reinforcing, frequency modulation and school shape ability
The polynary processing of part, the resonance nargin in lift structure fatigue life, guarantee part time job rotating speed.
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
All other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Range.
Referring to Fig. 1, a kind of one embodiment of reversed polynary control method of laser peening provided in an embodiment of the present invention,
Including：
101, basis treats the laser peening reinforcing index that parts processed carries out structural analysis and residual stress test obtains
And technological parameter, determine the laser peening strengthening region of pending part；
Host strengthens index according to treating parts processed and carry out the laser peening that structural analysis and residual stress test obtain
And technological parameter, determine the laser peening strengthening region of pending part.
102, the laser peening strengthening region progress laser spray that parameter treats parts processed is strengthened according to preset laser peening
Ball intensive treatment, the part after being strengthened；
Host strengthens the laser peening strengthening region progress laser spray that parameter treats parts processed according to preset laser peening
Ball intensive treatment, the part after being strengthened.
103, the part after reinforcing is sampled to obtain specimen part, then fatigue life, remnants is carried out to specimen part
Whether stress meets the off-line test of preset index, if qualified, executes 104, if index is unqualified, executes 101；
The laser peening strengthening region progress laser peening that parts processed is treated according to preset laser peening reinforcing parameter is strong
Change is handled, and after the part after being strengthened, host is sampled the part after reinforcing to obtain specimen part, then to specimen part
The off-line test whether progress fatigue life, residual stress meet preset index executes 104 if qualified, if index is not
Qualification then executes 101.
104, resonance nargin analysis is carried out to the part after reinforcing based on Campbell figures, and according to resonance nargin analysis pair
Part after reinforcing carries out intrinsic frequency adjustment so that the operation interval of the part after reinforcing meets design requirement, obtains frequency modulation
Part afterwards；
After judging the part qualified after strengthening, host to the part after reinforcing resonate abundant based on Campbell figures
Degree analysis, and intrinsic frequency adjustment is carried out to the part after reinforcing according to resonance nargin analysis so that the work of the part after reinforcing
Meet design requirement as section, obtains the part after frequency modulation.
105, judge whether to resonate nargin not less than 10% and endurance percentage is not less than 30%, if so, executing
106, if it is not, then executing 104；
Host judges whether the part laser peening frequency modulation mass index after frequency modulation is qualified, if resonance nargin is not less than 10%
And endurance percentage is not less than 30%, then executes 106, if resonance nargin is less than 10% or endurance percentage is less than
30%, then execute 104.
106, it carries out part school shape region to the part after frequency modulation to choose, a reverse impact is applied to part school shape region
Load, to carry out Deformation Repair to the part after frequency modulation；
Host carries out part school shape region to the part after frequency modulation and chooses, and applies a reverse impact to part school shape region
Load, to carry out Deformation Repair to the part after frequency modulation.
107, judge whether the accessory size after the shape of school is qualified, if so, part processing terminates, if it is not, then executing
106。
Host judges whether the part school form quality amount after the shape of school is qualified, if the accessory size after the shape of school is qualified, at part
Reason terminates, if unqualified, executes 106.
Referring to Fig. 2, a kind of another implementation of reversed polynary control method of laser peening provided in an embodiment of the present invention
Example, including：
201, basis treats the laser peening reinforcing index that parts processed carries out structural analysis and residual stress test obtains
And technological parameter, determine the laser peening strengthening region of pending part；
Host strengthens index according to treating parts processed and carry out the laser peening that structural analysis and residual stress test obtain
And technological parameter, determine the laser peening strengthening region of pending part.
202, the surface layer of pending part is coated with absorbed layer, and the surface layer for treating parts processed applies water constraint layer, then root
Strengthen the laser peening strengthening region progress laser peening intensive treatment that parameter treats parts processed according to preset laser peening, obtains
Part after reinforcing；
The surface layer of pending part is coated with absorbed layer, and host computer applies the surface layer application water that water dispenser device treats parts processed
Restraint layer, the laser peening strengthening region progress laser peening that parts processed is treated further according to preset laser peening reinforcing parameter are strong
Change is handled, the part after being strengthened.
203, the part after reinforcing is sampled to obtain specimen part, then fatigue life, remnants is carried out to specimen part
Whether stress meets the off-line test of preset index, if qualified, executes 204, if index is unqualified, executes 201；
The laser peening strengthening region progress laser peening that parts processed is treated according to preset laser peening reinforcing parameter is strong
Change is handled, and after the part after being strengthened, host is sampled the part after reinforcing to obtain specimen part, then to specimen part
The off-line test whether progress fatigue life, residual stress meet preset index executes 204 if qualified, if index is not
Qualification then executes 201.
204, model analysis, intrinsic frequency of the part under different rotating speeds after being strengthened are carried out to the part after reinforcing
And the vibration shape；
Host carries out model analysis, intrinsic frequency of the part under different rotating speeds after being strengthened to the part after reinforcing
And the vibration shape.
205, using the rotating speed of the part after reinforcing as abscissa, frequency is ordinate, is drawn corresponding with the part after strengthening
Campbell figure, based on Campbell figures to the part after reinforcing carry out resonance nargin analysis；
After judging the part qualified after strengthening, for host using the rotating speed of the part after strengthening as abscissa, frequency is vertical
Coordinate is drawn Campbell corresponding with the part after reinforcing and schemed, resonated to the part after reinforcing based on Campbell figures
Nargin is analyzed.
206, the surface layer of the part after strengthening is coated with absorbed layer, applies water constraint layer to the surface layer of the part after reinforcing,
By the way that part zone area and laser peening impact depth is arranged, the part after reinforcing is carried out according to the analysis of resonance nargin intrinsic
Frequency adjusts so that the operation interval of the part after reinforcing meets design requirement, obtains the part after frequency modulation；
The surface layer of part after reinforcing is coated with absorbed layer, and host computer applies water dispenser device and applied to the surface layer of the part after reinforcing
Add water constraint layer, by the way that part zone area and laser peening impact depth is arranged, after being analyzed to reinforcing according to resonance nargin
Part carries out intrinsic frequency adjustment so that the operation interval of the part after reinforcing meets design requirement, obtains the part after frequency modulation.
207, judge whether to resonate nargin not less than 10% and endurance percentage is not less than 30%, if so, executing
208, if it is not, then executing 205；
Host judges whether the part laser peening frequency modulation mass index after frequency modulation is qualified, if resonance nargin is not less than 10%
And endurance percentage is not less than 30%, then executes 208, if resonance nargin is less than 10% or endurance percentage is less than
30%, then execute 205.
208, school shape mechanical model is established with the part after frequency modulation, by numerical simulation, is exchanged according to school shape mechanical model
Part after frequency carries out part school shape region and chooses, then applies a reverse impact load to part school shape region, with to frequency modulation
Part afterwards carries out Deformation Repair；
Host establishes school shape mechanical model with the part after frequency modulation, by numerical simulation, is exchanged according to school shape mechanical model
Part after frequency carries out part school shape region and chooses, then applies a reverse impact load to part school shape region, with to frequency modulation
Part afterwards carries out Deformation Repair.
209, judge whether the accessory size after the shape of school is qualified, if so, part processing terminates, if it is not, then executing
208。
Host judges whether the part school form quality amount after the shape of school is qualified, if the accessory size after the shape of school is qualified, at part
Reason terminates, if unqualified, executes 208.
In the present embodiment, the detailed process of the polynary control method of reversed laser peening is：
First, the plasma shock wave generated using intense laser beam forms dislocation structure that is intensive, stablizing in material surface
With residual compressive stress, material surface is made to generate strain hardening.Residual compressive stress can reduce the tensile stress level in alternating load, make
Mean stress level declines, to improve fatigue crack initiation life.The presence of residual compressive stress simultaneously, can cause closing for crackle
Effect is closed, to effectively reduce the driving force of crack Propagation, extends Crack Growth Fatigue Life.
Then, the analysis of resonance nargin is carried out to part and dynamic stress nargin is analyzed, formed using laser peening impact part
Variation rigidity region is allowed to avoid certain frequency by the way that different zones area and impact depth, accuracy controlling part intrinsic frequency is arranged
Rate range is in trouble free service frequency field.
Finally, for accessory size deviation caused by laser peening reinforcing and frequency modulation, pass through mechanical modeling analysis and numerical value
Emulation technology, preferably school shape processing region realize the reparation of part deformation by applying reverse impact load.
Referring to Fig. 3, a kind of one embodiment of reversed polynary control device of laser peening provided in an embodiment of the present invention,
Including：
Five degree of freedom workbench 2, motion controller 3, laser 5, laser controller 6, optical measurement camera 9, at figure
Manage work station 10 and host 11；
3 one end of motion controller and five degree of freedom workbench 2 connect, and 3 other end of motion controller and host 11 connect；
6 one end of laser controller and laser 5 connect, and 6 other end of laser controller and host 11 connect；
10 one end of graphics process work station and optical measurement camera 9 connect, 10 other end of graphics process work station and host
11 connections.
In the present embodiment, optical measurement camera has whole audience scanning function, coordinates graphics process work station, can carry out
The three-dimensionalreconstruction of accessory size is tested with real-time deformation, ensures part school shape stage size precision.
Host is connected with motion controller, laser controller, graphics process work station and modal analysis system, keeps real
When data exchange, in the reinforcing of part, frequency modulation and school shape stage, system host is right by theory analysis and numerical simulation technology
Technological parameter real-time optimization and iteration ensure the precise high-efficiency of entire technology chain.
A kind of reversed polynary control device of laser peening provided in an embodiment of the present invention further includes：Apply water spray pipe 4, acceleration
Sensor 7, modal analysis system 8；
It applies water spray pipe 4 to connect with 6 one end of laser controller, 6 other end of laser controller is connect with host 11；
8 one end of modal analysis system and acceleration transducer 7 connect, and 8 other end of modal analysis system and host 11 connect.
Five degree of freedom workbench 2 includes：Fixture integrated and counter weight base, fixture integrated and counter weight base can be kept
It is sufficiently stiff, it is exclusively used in part intrinsic frequency detection demand.
Modal analysis system 8 includes：Modification amplifier, elastic excitation hammer, signal analyzer and analysis software, system can
Ensure the accurate of test data and stablizes.
The above be to a kind of detailed description of reversed laser peening polynary control method and device, for ease of understanding, below
The application of a kind of polynary control method of reversed laser peening and device will be illustrated with a concrete application scene, application examples packet
It includes：
Using blade of aviation engine as research object, as shown in Fig. 3 to Fig. 7, blade of aviation engine laser peening is strong
Change, the implementation steps of frequency modulation and school shape are：
(1) part status is assessed：Blade of aviation engine structure is analyzed using finite element software MSC.Nastran, is used
XRD methods detect the residual stress at blade leading edge, exhaust side and blade root, determine that laser peening strengthens index and technological parameter.
Pending part 1 (i.e. blade) is fixed on five degree of freedom workbench 2.
(2) strengthening region is arranged：As shown in figure 4, according to structural analysis and residual stress test as a result, determining leading edge
13, it is vented side 14 and 15 position laser peening strengthening region size of blade root, improves region of stress concentration residual stress amplitude, is promoted
Important load region fatigue crack initiation life.
(3) laser peening is strengthened：As shown in figure 4, blade surface layer applies absorbed layer, Tu Shui robots (applying water spray pipe 4) apply
Add water constraint layer, implements laser peening reinforcing according to parameter preset.
(4) judge to strengthen quality：For blade of aviation engine problem with high costs, chooses same material and make shape
Simple sample carries out laser peening reinforcing with same process parameter, to sample fatigue life, residual stress index off-line test,
Such as qualified, then terminate laser peening intensive treatment；If index is unqualified, then repeatedly step (2)-(4), until part is strong
Change qualified.
(5) model analysis：Using the natural mode of vibration (1-15 ranks) of finite element analysis blade of aviation engine, obtains blade and exist
Eigenfrequncies and vibration models under a variety of rotating speeds should include the typical rotating speed on flight profile, mission profile in operating mode：Idling, take off, cruise and
Land working speed.
(6) resonance analyzing：As shown in figure 5, drawing the Campbell figures of blade of aviation engine, abscissa turns for part
Speed, ordinate are frequency.Free running frequency is indicated by fixing horizontal line, corresponds to the intrinsic frequency under blade different modalities；It forces
Oscillating component, i.e., frequency content related with rotating speed, is presented on the ray drawn with origin, the various internal excitings of ray representation
Power.Such as intrinsic frequency straight line and ray intersection, then may resonate.Resonance nargin analysis is carried out based on Campbell figures,
The resonance nargin that considers blade key rotating speed and need to meet.
(7) resonance nargin assessment：Within the scope of all design speeds of blade, resonance nargin meets claimed below：
Wherein, wherein fdFor part in rotating speed n practical dynamic frequency, unit Hz；N is that design speed unit is r/min；
KnFor rotating speed multiplying power.
(8) laser peening frequency modulation：Blade surface layer applies absorbed layer, and Tu Shui robots apply water constraint layer, as shown in fig. 6,
It is boundary with 1-2 first order mode maximum displacements boundary 18, different zones area and laser peening impact is set in blade center area 17
Depth is adjusted part intrinsic frequency in blade frequency modulation region 16, is ensured that blade working section is full based on nargin analysis of resonating
Foot resonance margin requirement.
(9) judge frequency modulation mass：Five degree of freedom workbench 2 adds counterweight and ensures rigidity, carries out blade modal testing experiment,
By three sections of 7 fixed blade upper, middle and lower of acceleration transducer, tapped using elastic excitation hammer as driving source, pilot blade laser peening
Frequency modulation treated intrinsic frequency.Index is resonance nargin >=10%, endurance percentage >=30%.As frequency modulation index reaches
Mark then terminates the processing of laser peening frequency modulation；If index is unqualified, then repeatedly step (7)-(9), until part frequency modulation is up to standard.
(10) school shape mechanical model：After blade completes laser peening reinforcing and frequency modulation, by optical measurement camera 9 and figure
Processing workstation 10 measures deformable blade 3D data, and laser peening school shape mechanical model is established with deformed vanes geometric shape.
(11) shape region in school is preferred：Host 11 is excellent based on the shape mechanical model of school by theory analysis and numerical simulation
Select part school shape region.
(12) reversed laser peening control shape：As shown in fig. 7, the reverse side in deformable blade direction 19 applies a reverse impact
Load (as shown in laser peening loading direction 20 in figure), realize deformable blade amount reparation, the applying zone of shock loading and
Load parameter is obtained by mechanical model and numerical value iteration of simulations.
(13) school shape quality testing：10 on-line checking blade school form quality amount of optical measurement camera 9 and graphics process work station,
Such as size qualification, then step (14) is gone to；If accessory size is unqualified, then repeatedly step (11)-(13), until blade dimensions are closed
Lattice.
(14) the polynary control flow of reversed control shape laser peening of the change intrinsic frequency of blade of aviation engine terminates.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Stating embodiment, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of polynary control method of reversed laser peening, which is characterized in that including：
S1：Strengthen index and technique according to treating parts processed and carrying out the laser peening that structural analysis and residual stress test obtain
Parameter determines the laser peening strengthening region of the pending part；
S2：Strengthen parameter according to preset laser peening and laser peening is carried out to the laser peening strengthening region of the pending part
Intensive treatment, the part after being strengthened；
S3：Part after the reinforcing is sampled to obtain specimen part, then specimen part progress fatigue life, remnants are answered
Whether power meets the off-line test of preset index, if qualified, executes S4, if index is unqualified, executes S1；
S4：Resonance nargin analysis is carried out to the part after the reinforcing based on Campbell figures, and according to the resonance nargin point
It analyses and intrinsic frequency adjustment is carried out to the part after the reinforcing so that the operation interval of the part after the reinforcing, which meets design, to be wanted
It asks, obtains the part after frequency modulation；
S5：Judge whether the part laser peening frequency modulation mass index after the frequency modulation is qualified, if resonance nargin is not less than 10%
And endurance percentage is not less than 30%, then executes S6, if resonance nargin is less than 10% or endurance percentage is less than
30%, then execute S4；
S6：Part school shape region is carried out to the part after the frequency modulation to choose, and one is applied reversely to the part school shape region
Shock loading, to carry out Deformation Repair to the part after the frequency modulation；
S7：Judge whether the part school form quality amount after the shape of school is qualified, if the accessory size after the school shape is qualified, part processing
Terminate, if unqualified, executes S6.
2. the polynary control method of reversed laser peening according to claim 1, which is characterized in that described according to preset laser
Shot peening strengthening parameter carries out laser peening intensive treatment to the laser peening strengthening region of the pending part, after being strengthened
Part specifically include：
The surface layer of the pending part is coated with absorbed layer, applies water constraint layer, then root to the surface layer of the pending part
Strengthen parameter according to preset laser peening and laser peening intensive treatment carried out to the laser peening strengthening region of the pending part,
Part after being strengthened.
3. the polynary control method of reversed laser peening according to claim 1, which is characterized in that described to be based on Campbell
Figure carries out resonance nargin analysis to the part after the reinforcing, and is analyzed to the part after the reinforcing according to the resonance nargin
Carry out intrinsic frequency adjustment so that the operation interval of the part after the reinforcing meets design requirement, obtains the part after frequency modulation
Further include before：
Model analysis is carried out to the part after the reinforcing, obtains intrinsic frequency of the part under different rotating speeds after the reinforcing
And the vibration shape.
4. the polynary control method of reversed laser peening according to claim 3, which is characterized in that described to be based on Campbell
Figure carries out resonance nargin analysis to the part after the reinforcing, and is analyzed to the part after the reinforcing according to the resonance nargin
Carry out intrinsic frequency adjustment so that the operation interval of the part after the reinforcing meets design requirement, obtains the part after frequency modulation
It specifically includes：
Using the rotating speed of the part after the reinforcing as abscissa, frequency is ordinate, is drawn corresponding with the part after the reinforcing
Campbell figure, based on the Campbell figures to the part after the reinforcing carry out resonance nargin analysis；
The surface layer of part after the reinforcing is coated with absorbed layer, applies water constraint layer to the surface layer of the part after the reinforcing,
By the way that part zone area and laser peening impact depth is arranged, analyzed to the part after the reinforcing according to the resonance nargin
Carry out intrinsic frequency adjustment so that the operation interval of the part after the reinforcing meets design requirement, obtains the part after frequency modulation.
5. according to the reversed polynary control method of laser peening described in claim 1, which is characterized in that it is described to the frequency modulation after
Part carries out part school shape region and chooses, and applies a reverse impact load to the part school shape region, with to the frequency modulation
Part afterwards carries out Deformation Repair and specifically includes：
School shape mechanical model is established with the part after frequency modulation, by numerical simulation, according to the school shape mechanical model to the tune
Part after frequency carries out part school shape region and chooses, then applies a reverse impact load to the part school shape region, with right
Part after the frequency modulation carries out Deformation Repair.
6. according to the reversed polynary control method of laser peening described in claim 1, which is characterized in that the resonance nargin passes through one
Calculation formula obtains, and the calculation formula is：
Wherein, wherein fdFor part in rotating speed n practical dynamic frequency, unit Hz；N is that design speed unit is r/min；KnFor
Rotating speed multiplying power.
7. a kind of polynary control device of reversed laser peening, which is characterized in that including：Five for placing pending part are free
Spend workbench, motion controller, laser, laser controller, optical measurement camera, graphics process work station and host；
Described motion controller one end is connected with the five degree of freedom workbench, the motion controller other end and the host
Connection；
Described laser controller one end is connected with the laser, and the laser controller other end is connected with the host；
Graphics process work station one end is connected with the optical measurement camera, the graphics process work station other end and institute
State host connection；
Wherein, host treats parts processed for basis and carries out structural analysis and the leading edge to the pending part, exhaust
Side, blade root carry out the laser peening that residual stress test obtains and strengthen index and technological parameter, determine the pending part
Leading edge, exhaust side, blade root laser peening strengthening region；
Host is additionally operable to strengthen parameter according to preset laser peening, using laser to the laser peening of the pending part
Strengthening region carries out laser peening intensive treatment, the part after being strengthened；
Host is additionally operable to be sampled to obtain specimen part to the part after the reinforcing, then carries out the tired longevity to specimen part
Whether life, residual stress meet the off-line test of preset index, if qualified, after being based on Campbell figures to the reinforcing
Part carry out resonance nargin analysis, and according to it is described resonance nargin analysis and utilization laser to after the reinforcing part carry out
Intrinsic frequency adjusts so that the operation interval of the part after the reinforcing meets design requirement, obtains the part after frequency modulation；
Host is additionally operable to judge whether the part laser peening frequency modulation mass index after the frequency modulation is qualified, if resonance nargin is not
Less than 10% and endurance percentage is not less than 30%, then carrying out part school shape region to the part after the frequency modulation chooses,
One reverse impact load is applied to the part school shape region using laser, to be deformed to the part after the frequency modulation
It repairs；
Host is additionally operable to judge whether the part school form quality amount after the shape of school closes by optical measurement camera and graphics process work station
Lattice, if the accessory size after the school shape is qualified, part processing terminates.
8. the polynary control device of reversed laser peening according to claim 7, which is characterized in that further include：Painting water spray pipe,
Modal analysis system, acceleration transducer；
The painting water spray pipe is connected with described laser controller one end, and the laser controller other end is connect with the host；
Described modal analysis system one end is connected with the acceleration transducer, the modal analysis system other end and the master
Machine connects.
9. the polynary control device of reversed laser peening according to claim 7, which is characterized in that the five degree of freedom work
Platform includes：Fixture integrated and counter weight base.
10. the polynary control device of reversed laser peening according to claim 8, which is characterized in that the model analysis system
System includes：Modification amplifier, elastic excitation hammer, signal analyzer and analysis software.
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| CN110900463A (en) * | 2018-09-17 | 2020-03-24 | 鲍臻 | Automatic shot blasting forming device and method for synchronous cambered surface forming hammer |
| CN109583037A (en) * | 2018-11-06 | 2019-04-05 | 西北工业大学 | A kind of parameter control method of blade of aviation engine shot-peening machining deformation |
| CN110586695B (en) * | 2019-07-31 | 2021-08-24 | 广东工业大学 | Laser shock peening and shape correction method and device for engine bifurcated tail nozzle welding seam |
| CN111055086B (en) * | 2019-12-27 | 2020-10-16 | 北京航空航天大学 | Surface modification and residual stress regulation and control method for trace removal after shot peening |
| CN112048614B (en) * | 2020-09-10 | 2022-03-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Hollow blade life-prolonging shape-controlling method based on laser shock peening |
| CN113312825B (en) * | 2021-06-18 | 2022-03-22 | 广东工业大学 | Laser shot peening effect monitoring method and device |
| CN114592119A (en) * | 2022-03-14 | 2022-06-07 | 中国航空制造技术研究院 | Laser shock peening method based on prestress |
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| US5932120A (en) * | 1997-12-18 | 1999-08-03 | General Electric Company | Laser shock peening using low energy laser |
| JP2003003279A (en) * | 2001-06-21 | 2003-01-08 | Toshiba Corp | Surface hardening treatment method and thrust disk using the treatment method |
| RU2342445C1 (en) * | 2007-03-26 | 2008-12-27 | Государственное образовательное учреждение высшего профессионального образования "Тверской государственный технический университет" | Strengthening technique of shearing die |
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| CN103898297B (en) * | 2012-12-24 | 2016-07-06 | 中国科学院沈阳自动化研究所 | A kind of blisk laser shock peening method |
| CN105385839A (en) * | 2014-09-09 | 2016-03-09 | 中国科学院沈阳自动化研究所 | System and method for automatic control over laser shock peening |
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