CN109128168A - A kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature - Google Patents
A kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature Download PDFInfo
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- CN109128168A CN109128168A CN201811200237.9A CN201811200237A CN109128168A CN 109128168 A CN109128168 A CN 109128168A CN 201811200237 A CN201811200237 A CN 201811200237A CN 109128168 A CN109128168 A CN 109128168A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/80—Data acquisition or data processing
- B22F10/85—Data acquisition or data processing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The present invention provides a kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature, is related to increases material manufacturing technology field.Titanium alloy structure part is divided into beam class, frame class, connector class, siding class and rib class first by this method, and part digital-to-analogue is designed to technique digital-to-analogue according to synchronous powder feeding system increasing material manufacturing process characteristic；Then hierarchy slicing processing is carried out to technique digital-to-analogue, region division is carried out according to structure feature to each synusia data, every a kind of titanium alloy structure part is divided into plane, cross, I-shaped, "-" type, T font and L-type；Structure feature synchronous powder feeding system increasing material manufacturing technical process, process parameter optimizing are finally formed into database, for subsequent specific part increasing material manufacturing technological design investigation, high-effect high-quality completes increasing material manufacturing technological design.Synchronous powder feeding system increasing material manufacturing Process Planning Method provided by the invention based on structure feature, simplifies increasing material manufacturing technological design difficulty, shortens the technological design period, improve process layout efficiency.
Description
Technical field
The present invention relates to increases material manufacturing technology field more particularly to a kind of synchronous powder feeding system increasing material manufacturings based on structure feature
Process Planning Method.
Background technique
It is with alloy powder that laser gain material, which manufactures (Laser Additive Manufacturing, LAM are commonly called as 3D printing),
For raw material, the one kind successively accumulated quickly is solidified by the fusing of high power laser light in-situ metallurgical and takes into account material preparation and High Performance Zero
The integrated technique of part forming.Its principle is to go out three-dimensional part model using Computerized three-dimensional software design, then to model into
Row certain hierarchy slicing processing is turned to a series of two-dimentional levels for threedimensional model is discrete, is then successively scanned, be superimposed using laser
The mode of forming adds dusty material and electronic 3-D model is directly changed into entity component.From the manufacture of complicated shape part
From the point of view of, it has the advantages that incomparable compared with traditional manufacturing technology: laser gain material manufacturing technology see achievable near net at
Shape saves material, is not necessarily to mold and special fixture, with short production cycle, high-efficient, and the part manufactured has excellent mechanical property
Energy.Therefore the quick manufacture of structural and functional metal parts is mainly used in aerospace field.
According to the difference of manufacturing process, laser gain material manufacturing technology can be divided into synchronous feeding, preset powdering, synchronous feeding with
Preset powdering combines three types.Two kinds of techniques of synchronous powder feeding system and synchronous wire feed can be divided into again by wherein synchronizing feeding.It synchronizes and send
Powder is to be directly transported laser deposition powder in laser molten pool, using airborne formula powder feeder as molten bath is in workpiece surface
It is mobile, form sedimentary.There are two ways to realizing synchronous powder feeding system, one kind are lateral powder feeding, and another kind is coaxial powder-feeding.With it is pre-
It sets automatic powder feeding system to compare, synchronous powder feeding system can be very good to realize the protection of gas part, make the performance of cladding powder itself not by air
The excellent mechanical property of sedimentary is realized in the influence of the elements such as oxygen, nitrogen.
Metal powder-feeding laser increases material manufacturing technology is fundamentally Laser Clad Deposition, utilizes coaxial feeding in process
Metal powder is synchronized to be transported to and be irradiated in the dynamic pool formed by laser beam by nozzle, completes fusing, the solidification of metal powder
Forming.The technology is mainly used in the quick preparation and workpiece surface modification and reparation of complicated metal parts.On the one hand, right
In complicated part, the manufactures such as traditional casting, forging are difficult to produce, i.e., can, there is also the production cycles
The problems such as long, at high cost, output is difficult to improve.Using metal powder feeding increases material manufacturing technology, the manufacturing cycle can be greatly shortened,
Cost is reduced, is easy to produce in batches；On the other hand, in the heavy parts of some local damages, especially Aeronautics and Astronautics
Large titanium alloy part will substantially increase production cost if produced again, increase the production cycle, it is difficult to guarantee on time
Complete production task.By utilizing metal powder-feeding laser increases material manufacturing technology, need to only local route repair be carried out to damaged part, repaired
Time is short and part performance after the completion of repairing complies fully with production standard, therefore can greatly reduce production cost, draw
Return loss is lost.
Existing synchronous powder feeding system increasing material manufacturing Process Planning Method there are the problem of mainly have:
(1) increasing material manufacturing technological design relies on designer personal experience
It is immature in view of current synchronous powder feeding system increases material manufacturing technology production equipment, it is all that single production either small lot is raw
It producing, synchronous powder feeding system increasing material manufacturing technique depends on the experience of technologist, and setting related process parameters are removed, relevant device is adjusted,
Different technologist's design experiences are different, and the experience of technologist needs the accumulation of time, and personal experience none
Specific measurement index is not easy to pass on, high to technologist's qualification requirement, artificially controls none unified standard, quality
It is unstable, for meet demand, need to carry out certain subsequent processing, low efficiency, risk height.
(2) different part increasing material manufacturing technological designs can not use for reference, and each part will detailed design increasing material manufacturing technique
Design, workload are huge
Different types of part is different using material, even if identical using material, the part work of different structure configuration, size
Skill is different, and the quality of molded part is also different, and the molded part condition of product is different, and process window is narrow, and parameter setting is difficult, in addition,
Every one kind part different process personnel design technology is different, causes inside parts institutional framework different, it is not possible to use for reference, can not incite somebody to action
The technique succession of each step is gone down.
(3) quality risk is big
The internal stress that deformation and crackle in increasing material manufacturing technique generate in forming process, and generate internal stress
Root is that temperature gradient is excessive, different technologists, and the technological parameter of different part settings is different, increases material in powder-feeding laser
During design and manufacture technology, it is usually because the fluctuation of some technological parameter, causes workpieces surface condition bad, if cannot
It is repaired in time, will further result in technical process can not carry out, or even scrap workpiece.It is likely to occur in technical process
Nodularization etc. causes technology stability poor, and will increase manufacturing procedure sometimes, and quality conformance is poor, using powder as the increasing material of material
The wild effect of process for making is more serious, and there are risks, can not assess.
Summary of the invention
It is a kind of based on structure feature the technical problem to be solved by the present invention is in view of the above shortcomings of the prior art, provide
Synchronous powder feeding system increasing material manufacturing Process Planning Method improves increasing material manufacturing technological design efficiency, succession design knowledge and improves product
Quality.
A kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature, comprising the following steps:
Step 1, the design of technique digital-to-analogue: being divided into beam class, frame class, connector class, siding class and rib class for titanium alloy structure part, will
Part digital-to-analogue is designed to technique digital-to-analogue according to synchronous powder feeding system increasing material manufacturing process characteristic；
According to synchronous powder feeding system increasing material manufacturing process characteristic some fine structure removals of specific part digital-to-analogue, model regularization
Processing, adding technology support, design substrate, selection increasing material manufacturing deposition growing direction, are designed to increasing material manufacturing technique digital-to-analogue；
Step 1.1, removal fine structure: according to increasing material manufacturing technique by the small hole of part data, groove, small boss this
A little fine structure removals, increase part wall thickness, reserve non-destructive testing and machine-finish allowance；
Model is carried out regularization processing according to part shape and these features of material property by step 1.2；
Step 1.3, design and selection increase the material direction of growth, adding technology support: according to part space X, tri- directions Y, Z
Projecting section accumulates size, and the minimum direction of preferred cross-sections product adds this direction of growth cantilever as increasing material manufacturing deposition growing direction
Add processing support；
Step 2, characteristic sub-area: hierarchy slicing processing is carried out to technique digital-to-analogue, to each synusia data according to structure feature
Region division is carried out, every a kind of titanium alloy structure part is divided into plane, cross, I-shaped, "-" type, T font and L
Type；
Step 2.1 carries out hierarchy slicing processing to technique digital-to-analogue: pressing previous designs and selection for the part of simple shape
The direction of growth, carry out hierarchy slicing by given thickness；The main direction of growth is first selected for complex-shaped part, cantilever
Or other positions for being not suitable for an increasing material manufacturing separate, and first press main direction of growth hierarchy slicing, then rotate digital-to-analogue and press and divide
The position cut open carries out secondary length direction hierarchy slicing, obtains one group of synusia data；
Step 2.2, to synusia data by its structure feature carry out subregion: each synusia segment by region after obtain several structures
The simple region combination of type feature, after a large amount of part hierarchy slicings, region segmentation, and feature is concluded to obtain plane
Six kinds of type, cross, I-shaped, "-" type, T font and L-type structural configurations；
The size of plane, cross, I-shaped, "-" type, T font and L-type is obtained after step 2.3, characteristic sub-area, it is special
These specific sizes of the length and width of component part want the size of technique digital-to-analogue corresponding to each layer of binder course sheet data in sign
And synchronous powder feeding system increasing material manufacturing technique is done to adjust and optimize；
Step 3, increasing material manufacturing technological design: structure feature synchronous powder feeding system increasing material manufacturing technical process, technological parameter is excellent
Change forms database, and for subsequent specific part increasing material manufacturing technological design investigation, high-effect high-quality is completed increasing material manufacturing technique and set
Meter；
Step 3.1, according to apparatus-form, size and laser power size, the typical knot that will be summarized from magnanimity part
Structure feature, plane, cross, I-shaped, "-" type, T font and L-type carry out increasing material manufacturing technique and carry out theory analysis, examination
Verifying, final curing process and work step, Optimizing Process Parameters, summarize the laser power P of every kind of structural configuration, scan velocity V,
The parameter sets of powder feeding rate F, sweep span I and lift height Δ h establish the increasing material manufacturing process data based on characteristic sub-area
Library；
Technique digital-to-analogue is carried out hierarchy slicing first and presses structure by step 3.2, the new parts for needing increasing material manufacturing
Characteristic sub-area, then the call parameters from technological parameter library, high-effect high-quality complete increasing material manufacturing technological design.
The beneficial effects of adopting the technical scheme are that provided by the invention a kind of based on the same of structure feature
Powder feeding increasing material manufacturing Process Planning Method is walked, by carrying out subregion and use by feature to synusia data, realizes increasing material manufacturing
The reliable succession of process knowledge mitigates increasing material manufacturing technological design difficulty, significantly improves technological design efficiency, and reducing
The deformation of part and cracking, improve precision and production efficiency during increasing material manufacturing；It reduces and the experience of people is relied on, reduce people
For bring error, it is advantageously implemented automation and intelligence；The difficulty for simplifying increasing material manufacturing technological design, shortens technique
The period of design improves the efficiency of process layout.
Detailed description of the invention
Fig. 1 is a kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature provided in an embodiment of the present invention
Flow chart；
Fig. 2 is the classification schematic diagram of Titanium Alloy Aircraft structural member provided in an embodiment of the present invention, wherein (a) is beam class,
(b) it is frame class, (c) is connector class, (d) be siding class, (e) is rib class；
Fig. 3 is Titanium Alloy Aircraft design of part tagsort schematic diagram provided in an embodiment of the present invention, wherein (a) is face,
(b) to be cross, it is (c) I-shaped, (d) is "-" type, (e) is T font, (f) be L-type；
Fig. 4 is the schematic diagram of S type beam provided in an embodiment of the present invention；
Fig. 5 is the 1st layer-the 29 layer of S type beam of hierarchical diagram provided in an embodiment of the present invention；
Fig. 6 is the 30th layer-the 58 layer of S type beam of hierarchical diagram provided in an embodiment of the present invention；
Fig. 7 is the schematic diagram of skeleton structure provided in an embodiment of the present invention；
The hierarchical diagram that Fig. 8 is 1st layer-the 15 layer of skeleton structure provided in an embodiment of the present invention；
The hierarchical diagram that Fig. 9 is 16th layer-the 203 layer of skeleton structure provided in an embodiment of the present invention；
Figure 10 is the schematic diagram of mount structure provided in an embodiment of the present invention；
The hierarchical diagram that Figure 11 is 1st layer-the 3 layer of mount structure provided in an embodiment of the present invention；
Figure 12 is the hierarchical diagram of 4th layer -11th layer of mount structure provided in an embodiment of the present invention；
Figure 13 is vertical fin girder construction schematic diagram provided in an embodiment of the present invention；
Figure 14 is the 1st layer-the 18 layer of vertical fin girder construction of hierarchical diagram provided in an embodiment of the present invention；
Figure 15 is the 19th layer-the 74 layer of vertical fin girder construction of hierarchical diagram provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
The present embodiment increases material by taking Titanium Alloy Aircraft structural member as an example, using the synchronous powder feeding system of the invention based on structure feature
Manufacturing process planing method carries out increasing material manufacturing.
A kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature, as shown in Figure 1, including following step
It is rapid:
Step 1, the design of technique digital-to-analogue: being divided into beam class, frame class, connector class, siding class and rib class for titanium alloy structure part, will
Part digital-to-analogue is designed to technique digital-to-analogue according to synchronous powder feeding system increasing material manufacturing process characteristic；
In the present embodiment, the classification of Titanium Alloy Aircraft structural member is as shown in Figure 2.
According to synchronous powder feeding system increasing material manufacturing process characteristic some fine structure removals of specific part digital-to-analogue, model regularization
Processing, adding technology support, design substrate, selection increasing material manufacturing deposition growing direction, are designed to increasing material manufacturing technique digital-to-analogue；
Step 1.1, removal fine structure: according to increasing material manufacturing technique by the small hole of part data, groove, small boss this
A little fine structure removals, increase part wall thickness, reserve non-destructive testing and machine-finish allowance；
Model is carried out regularization processing according to part shape and these features of material property by step 1.2, as size is mutated
Position increases knuckle, pointed design is rectangular, the lesser place of wall thickness increases；
Step 1.3, design and selection increase the material direction of growth, adding technology support: according to part space X, tri- directions Y, Z
Projecting section accumulates size, and the minimum direction of preferred cross-sections product adds this direction of growth cantilever as increasing material manufacturing deposition growing direction
Add processing support；
Step 2, characteristic sub-area: hierarchy slicing processing is carried out to technique digital-to-analogue, to each synusia data according to structure feature
Region division is carried out, every a kind of titanium alloy structure part is divided into plane, cross, I-shaped, "-" type, T font and L
Type；
Step 2.1 carries out hierarchy slicing processing to technique digital-to-analogue: pressing previous designs and selection for the part of simple shape
The direction of growth, carry out hierarchy slicing by given thickness.The main direction of growth is first selected for complex-shaped part, cantilever
Or other positions for being not suitable for an increasing material manufacturing separate, and first press main direction of growth hierarchy slicing, then rotate digital-to-analogue and press and divide
The position cut open carries out secondary length direction hierarchy slicing.Thus obtain one group of synusia data.
Step 2.2 carries out subregion by its structure feature to synusia data: because part shape and structure are multifarious, layering
Synusia shape after slice is also varied, but is further continued for dividing by synusia by analysis, that is, presses structure feature subregion, each
The simple region combination of several configuration characteristics can be obtained in synusia after segmenting by region, by a large amount of part hierarchy slicings, region segmentation
Afterwards, and feature conclude and plane as shown in Figure 3, cross, I-shaped, "-" type, T font and L-type six can be obtained
Kind structural configuration.
In the present embodiment, S type beam process digital-to-analogue as shown in Figure 4 is layered, one is divided into 58 layers, from individual-layer data
Analysis comparison is it is found that 1 layer to 29 layers of shape is similar as shown in figure 5, the shape from 30 layers to 58 layer is similar as shown in Figure 6.It is right
Fig. 5 analysis known to its increasing material manufacturing laser scanning be larger plane scanning, can be divided into R1 as shown in Figure 5,
R2 ... 6 areas such as R6.Fig. 6 is analyzed it is found that can be divided into 25 areas by feature to it, summarize and analyze altogether there are four types of
Structure feature: L-type, I-shaped, "-" type and surface structure；Wherein R1, R16 are " L-type " structures, R4, R5, R7, R9, R10,
R11, R13, R14, R15, R21, R24, R25, be " "-" type " structure, R2, R6, R8, R12, R17, R18, R19, R20, R22,
It R23, is " I-shaped " structure, R3 is " face type " structure.
Binding joint structure digital-to-analogue as shown in Figure 7 is layered, the structure from the 1st layer to 15 layers is as shown in figure 8, can
It is carried out to be divided into 8 areas by structure feature.Structure from 16 to 203 layer is as shown in figure 9, can be divided it by structure feature
Area, the feature after subregion mainly have L-type, and T font is cross 3 kinds equal.Wherein R1, R11, R12, R18 are L-type structures, R2, R3,
R4, R5, R6, R7, R8, R9, R10, R13, R14, R19 are T font structures, and R15, R16, R17, R20 are cross-shaped configurations.
Layered shaping is carried out to load mount structure digital-to-analogue as shown in Figure 10, the shape from 1 layer to 3 layer is as shown in figure 11,
It can be carried out by structure feature as 8 blocks, the shape from 4 layers to 11 layer is as shown in figure 12, can be divided by its structure feature
36th area, totally 36 subregions, R10, R26 are planar structure, R1, R2, R8, R9, R12, R13, R14, R15, R23, R24, R29,
R32, R33 are " work " word structure, and R3, R4, R5, R6, R7, R11, R16, R17, R25, R27, R28, R31, R34, R35, R36 are
" one " word structure, R18, R19, R20, R21, R22, R30 are " T " word structure.
The size of plane, cross, I-shaped, "-" type, T font and L-type is obtained after step 2.3, characteristic sub-area, such as
The length and width of feature entirety, these specific sizes of the length and width of component part want binder course sheet data each in feature
The size and synchronous powder feeding system increasing material manufacturing technique of technique digital-to-analogue corresponding to layer are done to adjust and optimize.
Part complexity and not of uniform size, such as S beam, binding connector, load frame part complexity Cheng Butong, size is from several
Ten millimeters to several meters, but by after characteristic sub-area, only simple several structure features.It only needs these structure features increasing material
After manufacturing process solidification and optimization, labyrinth, the various sizes of increasing material manufacturing technique at up to ten thousand kinds of parts of noon can be completed
Quickly, high quality design.By to different type part feature analyze, be obtained plane, cross, I-shaped, "-" type,
T font and 6 kinds of L-type, planar-type is similar with "-" type, but because titanium closes structural member median ventral plate and wattle is primary structure spy
Sign, and the two scale difference increasing material manufacturing technique is different, i.e., is divided into 2 classes by structure feature and increasing material manufacturing process characteristic.Similarly,
I-shaped and T font is divided into 2 different classes.
Step 3, increasing material manufacturing technological design: structure feature synchronous powder feeding system increasing material manufacturing technical process, technological parameter is excellent
Change forms database, subsequent specific part increasing material manufacturing technological design investigation, and high-effect high-quality completes increasing material manufacturing technological design.
Step 3.1, according to apparatus-form, size and laser power size, the typical knot that will be summarized from magnanimity part
Structure feature, plane, cross, I-shaped, "-" type, T font and L-type carry out increasing material manufacturing technique and carry out theory analysis, examination
Verifying, final curing process and work step, Optimizing Process Parameters, summarize the laser power P of every kind of structural configuration, scan velocity V,
The parameter sets of powder feeding rate F, sweep span I and lift height Δ h establish the increasing material manufacturing process data based on characteristic sub-area
Library；
In the present embodiment, the technological data bank of foundation is as shown in table 1:
1 technological data bank of table
| Structure feature | Mode/S | Power/P | Sweep speed/V | Powder feeding rate/F | Sweep span/I | Thickness/Δ h |
| "-" type | Syi | Pyi | Vyi | Fyi | Iyi | Δhyi |
| It is cross | Ssi | Psi | Vsi | Fsi | Isi | Δhsi |
| T font | Sti | Pti | Vti | Fti | Iti | Δhti |
| L font | Sli | Pli | Vli | Fli | Ili | Δhli |
| It is I-shaped | Sgi | Pgi | Vgi | Fgi | Igi | Δhgi |
| Face | Smi | Pmi | Vmi | Fmi | Imi | Δhmi |
In table, yi indicates i-th of "-" type structure feature of part, and si indicates i-th of cross-shaped configuration feature of part,
Ti indicates i-th of T font structure feature of part, and li indicates i-th of L-shaped structure feature of part, and gi indicates the i-th of part
A I-shaped structure feature, mi indicate i-th of area structure character of part.
Technique digital-to-analogue is carried out hierarchy slicing first and presses structure by step 3.2, the new parts for needing increasing material manufacturing
Characteristic sub-area, then the call parameters from technological parameter library, high-effect high-quality complete increasing material manufacturing technological design.
In the present embodiment, for the vertical fin beam of such as Figure 13, structure is as shown in figure 14 from the 1st layer to 18 layers, can carry out to it
Simple piecemeal, the structure from 19 to 74 layer is as shown in figure 15, and four kinds of structures can be carried out to it and are divided, L-type, and "-" type is I-shaped
And face, at processing " L-type ", the P of calling technological databasel1、Vl1、Fl1、Il1、Δhl1Process L1, call Pl2、Vl2、Fl2、Il2、
Δhl2Process L2, P is called at processing " "-" type "yi、Vyi、Fyi、Iyi、ΔhyiY is processed respectivelyi, i is from 1 to 12, in processing " work
P is called when font "gi、Vgi、Fgi、Igi、ΔhgiG is processed respectivelyi, i calls P at processing " face " from 1 to 6mi、Vmi、Fmi、Imi、
ΔhmiProcess Mi。
The accumulation that heat is had in part processing prevents part from deforming to weaken this heat history, piecemeal when processing
Processing, and optimum processing sequence is found, subregion processing can weaken the influence and decrease pair to same layer in this way
Next layer of influence.As shown in figure 14, all it is divided into 6 pieces for 1 layer to 18 layers every layer, according to the processing sequence set in advance, processing
Track processes distance, dispatches the technological parameter P in " face "mi、Vmi、Fmi、Imi、ΔhmiProcess Mi, 1 layer to 18 layers similarly.
When processing 19 to 74 layers, processing sequence is preset, machining locus processes distance.Since each layer has simultaneously
" L-type ", " "-" type ", " I-shaped " and " face " call the technological parameter P in " face " according to the principle that subregion processes firstm1、
Vm1、Fm1、Im1、Δhm1Process M1.Recall the technological parameter P of " "-" type "y1、Vy1、Fy1、Iyi、Δhy1Process Y1, then call
The technological parameter P of " "-" type "y2、Vy2、Fy2、Iy2、Δhy2Process Y2, call the technological parameter P of " "-" type "y3、Vy3、Fy3、
Iy3、Δhy3Process Y3, recall the technological parameter P of " I-shaped "g1、Vg1、Fg1、Ig1、Δhg1Process G1, call " "-" type "
Technological parameter Py4、Vy4、Fy4、Iy4、Δhy4Process Y4, call the technological parameter P of " "-" type "y5、Vy5、Fy5、Iy5、Δhy5Processing
Y5, call the technological parameter P of " "-" type "y6、Vy6、Fy6、Iy6、Δhy6Process Y6, call the technological parameter P of " I-shaped "g2、
Vg2、Fg2、Ig2、Δhg2Process G2, call the technological parameter P of " "-" type "y7、Vy7、Fy7、Iy7、Δhy7Process Y7, call " I-shaped
The technological parameter P of type "g3、Vg3、Fg3、Ig3、Δhg3Process G3, call the technological parameter P of " "-" type "y8、Vy8、Fy8、Iy8、Δhy8
Process Y8, call the technological parameter P of " I-shaped "g4、Vg4、Fg4、Ig4、Δhg4Process G4, call the technological parameter P of " L-type "l1、
Vl1、Fl1、Il1、Δhl1Process L1, call the technological parameter P of " "-" type "y9、Vy9、Fy9、Iy9、Δhy9Process Y9, call " a word
The technological parameter P of type "y10、Vy10、Fy10、Iy10、Δhy10Process Y10, call the technological parameter P of " "-" type "y11、Vy11、Fy11、
Iy11、Δhy11Process Y11, call the technological parameter P of " I-shaped "g5、Vg5、Fg5、Ig5、Δhg5Process G5, call the work of " L-type "
Skill parameter Pl2、Vl2、Fl2、Il2、Δhl2Process L2, call the technological parameter P of " "-" type "y12、Vy12、Fy12、Iy12、Δhy12Processing
Y12, 19 to 74 layers similarly.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment, or some or all of the technical features are equal
Replacement；And these are modified or replaceed, model defined by the claims in the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (4)
1. a kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature, it is characterised in that: the following steps are included:
Step 1, the design of technique digital-to-analogue: titanium alloy structure part is divided into beam class, frame class, connector class, siding class and rib class, by part
Digital-to-analogue is designed to technique digital-to-analogue according to synchronous powder feeding system increasing material manufacturing process characteristic；
Step 2, characteristic sub-area: hierarchy slicing processing is carried out to technique digital-to-analogue, each synusia data are carried out according to structure feature
Every a kind of titanium alloy structure part is divided into plane, cross, I-shaped, "-" type, T font and L-type by region division；
Step 3, increasing material manufacturing technological design: by structure feature synchronous powder feeding system increasing material manufacturing technical process, process parameter optimizing shape
At database, for subsequent specific part increasing material manufacturing technological design investigation, high-effect high-quality completes increasing material manufacturing technological design.
2. a kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature according to claim 1, special
Sign is: the step 1 method particularly includes:
According to synchronous powder feeding system increasing material manufacturing process characteristic at some fine structure removals of specific part digital-to-analogue, model regularization
Reason, adding technology support, design substrate, selection increasing material manufacturing deposition growing direction, are designed to increasing material manufacturing technique digital-to-analogue；
Step 1.1, removal fine structure: according to increasing material manufacturing technique by the small hole of part data, groove, small boss these essence
Fine texture removal, increases part wall thickness, reserves non-destructive testing and machine-finish allowance；
Model is carried out regularization processing according to part shape and these features of material property by step 1.2；
Step 1.3, design and selection increase the material direction of growth, adding technology support: according to tri- part space X, Y, Z direction projections
This direction of growth cantilever is added work as increasing material manufacturing deposition growing direction by sectional area size, the minimum direction of preferred cross-sections product
Skill support.
3. a kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature according to claim 1, special
Sign is: the step 2 method particularly includes:
Step 2.1 carries out hierarchy slicing processing to technique digital-to-analogue: the life of previous designs and selection is pressed for the part of simple shape
Length direction carries out hierarchy slicing by given thickness；The main direction of growth is first selected for complex-shaped part, cantilever or its
The position that he is not suitable for an increasing material manufacturing separates, and first presses main direction of growth hierarchy slicing, then rotates digital-to-analogue by separating
Position carry out secondary length direction hierarchy slicing, obtain one group of synusia data；
Step 2.2 carries out subregion by its structure feature to synusia data: it is special that each synusia obtains several configurations after segmenting by region
Simple region combination is levied, after a large amount of part hierarchy slicings, region segmentation, and feature is concluded to obtain plane, ten
Six kinds of font, I-shaped, "-" type, T font and L-type structural configurations；
The size of plane, cross, I-shaped, "-" type, T font and L-type is obtained after step 2.3, characteristic sub-area, in feature
These specific sizes of the length and width of component part want the size of technique digital-to-analogue corresponding to each layer of binder course sheet data and same
Step powder feeding increasing material manufacturing technique is done to adjust and optimize.
4. a kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature according to claim 1, special
Sign is: the step 3 method particularly includes:
Step 3.1, according to apparatus-form, size and laser power size, by the typical structure summarized from magnanimity part spy
Sign, plane, cross, I-shaped, "-" type, T font and L-type carry out increasing material manufacturing technique and carry out theory analysis, test
Card, final curing process and work step, Optimizing Process Parameters, summarize laser power P, the scan velocity V, powder feeding of every kind of structural configuration
The parameter sets of rate F, sweep span I and lift height Δ h establish the increasing material manufacturing technological data bank based on characteristic sub-area；
Technique digital-to-analogue is carried out hierarchy slicing first and presses structure feature by step 3.2, the new parts for needing increasing material manufacturing
Subregion, then the call parameters from technological parameter library, high-effect high-quality complete increasing material manufacturing technological design.
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