CN108247056A - It is a kind of that modified method is synchronized to powder feeding formula laser gain material manufacture product - Google Patents
It is a kind of that modified method is synchronized to powder feeding formula laser gain material manufacture product Download PDFInfo
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- CN108247056A CN108247056A CN201810176392.5A CN201810176392A CN108247056A CN 108247056 A CN108247056 A CN 108247056A CN 201810176392 A CN201810176392 A CN 201810176392A CN 108247056 A CN108247056 A CN 108247056A
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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
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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
- B22F10/30—Process control
- B22F10/31—Calibration of process steps or apparatus settings, e.g. before or during manufacturing
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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
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/226—Driving means for rotary motion
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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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
- B22F10/30—Process control
- B22F10/38—Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
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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
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Abstract
A kind of that modified method is synchronized to powder feeding formula laser gain material manufacture product, this method is to increase to synchronize in laser gain material manufactures product process to follow rolling technology, including：The suitable rolling size of wheel of selection；The idler wheel height for realizing rolling function is calibrated；To having calibrated the rolling wheel of height, rolling and processing effect is reached according to needed for product and differentiates rolling power magnitude range, and then adjust the amount of feeding of rolling wheel；3D printing nozzle is run according to printing path on printing substrate；The relative altitude that can be processed in print procedure according to current product, adjustment rolling pressure size；To completing the rolling wheel of rolling pressure size adjustment, synchronize and follow rolling work；Printable layer is successively superimposed, and metallic article is formed after cooling.This method can not change the shape of workpiece, and be improved metallic article inherent quality and the institutional framework of inside, increase product compactness, improve product intensity.
Description
Technical field
The invention belongs to increasing material manufacturings and laser manufacturing field, are related to a kind of to the manufacture product progress of powder feeding formula laser gain material
Modified method is synchronized, more particularly to a kind of rolling technology.
Background technology
Increases material manufacturing technology is also referred to as 3D printing technique, and product is directly manufactured by way of successively accumulating material, with tradition
Subtract material manufacturing method exist essence difference.Since increasing material manufacturing is high, with short production cycle, at low cost etc. with stock utilization
Feature has a wide range of applications in the numerous areas such as aerospace, medical treatment, automobile.
The manufacture material of increases material manufacturing technology can be divided into metal, nonmetallic and medical biomaterial etc., as manufacturing industry is complete
Nodularization develops and the increasingly fierceness of market competition, for proposing higher requirement as the metallic article on manufacturing industry basis.
The universal process of conventional metals product processing is more, and die cost is high, it is long to manufacture and design the period, it is difficult to meet the quick response of new product
Manufacture demand.Then since the 1990s, with the development of laser, machinery, computer technology, material science and technology,
It is thus generated for the laser gain material manufacturing technology of metallic article.
Laser gain material manufacturing technology is a kind of advanced technology for being combined laser melting coating with rapid prototyping.Realize part
" freely manufacturing " solves the Problems in forming of many parts with complex structures, and greatly reduces manufacturing procedure, shortens processing week
Phase.But since the factor that laser gain material manufacture printing technique production process influences forming parts quality is more, cause in drip molding
It cracks, parts quality and intensity is reduced, main reason is that " the transient state consolidation of increases material manufacturing technology compacting mechanism
Journey " inherent characteristic, this compacting mechanism cause inside product there are microdefect, such as crackle, cavity, micro- stomata and fusion not
The defects of good.
Today there is also many scientific research personnel improve the research of laser gain material manufacture product mechanical property, such as Chinese patent
CN103173760A is disclosed a kind of method that 3D metallic article compactness is promoted using two laser, utilizes first of laser
Alloy powder is made to form printable layer, the second laser of trailing is heavy molten to being carried out by first of laser trace, passes through liquid metal
The defects of flowing of itself and internal stresses release, hole, air pocket, fire check, interface during reduction 3D printing crack, one
Determine to improve metalwork compactness in degree, but since complex process influences processing efficiency.In addition, after being used under the prior art more
Processing mode eliminates the harmful effect that brings of technological parameter during forming parts, such as patent CN104087729A, by product
Alternately subzero treatment and temper so as to reduce hole, improves product consistency, improves the mechanical property of metalwork.
However, identical with other widely used post processing modes, technical process is further complicated, while manufacture cost is increased,
So that generation product qualification rate is difficult to guarantee.And the technique side for being widely used in the rolling enhancing product intensity of every field
Method, application or blank on laser gain material manufacture product, and realize that increasing material manufacturing product synchronizes modified method still still
It does not report.Therefore, the side for synchronizing modified powder feeding formula laser gain material manufacture of processing parameter is effectively controlled using rolling technology
Method, important in inhibiting.
Invention content
The present invention in order to solve inside above-mentioned increasing material manufacturing product there are microdefect, as crackle, cavity, micro- stomata and
The problems such as lack of fusion, proposition is a kind of to synchronize modified method to powder feeding formula laser gain material manufacture product, can not change workpiece
Shape, and make metallic article inherent quality and inside institutional framework improved, increase product compactness, improve product it is strong
Degree makes product have required mechanical property, solves the deficiencies in the prior art.
The present invention is achieved by the following scheme：It is a kind of that modified side is synchronized to powder feeding formula laser gain material manufacture product
Method includes the following steps：
A. the threedimensional model for treating 3D printing object is established：
Software building threedimensional model is manufactured with CAD and generates stl file.
B. threedimensional model slicing treatment：
The stl file that made model is defined using computer program analysis generates two dimension slicing, obtains profile information.
C. prepare before printing shaping：
S101：According to the material stress of Laser Processing product and processing product initial roughness, suitable rolling wheel is selected
Size；
S201：The rolling wheel height for realizing rolling function is calibrated；
S301：To having calibrated the rolling wheel of height, rolling and processing effect is reached according to needed for product and differentiates rolling pressure size
Range, and then adjust the amount of feeding of rolling wheel.
D. laser printing is molded and completes to synchronize modification：
S401：3D printing nozzle is run according to printing path on printing substrate；
S501：It, can be according to the relative altitude of current product processing, adjustment rolling pressure size in print procedure；
S601：To completing the rolling wheel of rolling pressure size adjustment, synchronize and follow rolling work；
S701：Printable layer is successively superimposed, and metallic article is formed after cooling.
The step S101 is suitable according to the material stress of Laser Processing product and processing product initial roughness, selection
Size of wheel is rolled, the rolling wheel is driven by linear motor, according to cylindrical rolling wheel, then rolls length slightly larger than nozzle
Diameter, the dimension scale relationship of rolling length and 3D printing jet diameters is 5:6, according to ball-type rolling wheel, meet Rz
=f2/ 8r, r are milled head radius, and f is rolling feed, and Rz is material initial surface roughness, the rolling wheel in print procedure
The printing path of 3D printing nozzle is followed to be carried out at the same time the rolling of product.
In the step S201 to realize rolling function rolling wheel height calibrate, including first by rolling wheel most
The least significant end of low side and 3D printing nozzle is adjusted to sustained height, calibrates the initial position of rolling wheel, secondly minimum to rolling wheel
Position is adjusted, and plane to be processed is made to be contacted with rolling wheel lower surface.
Reach rolling and processing effect according to needed for Laser Processing product in the step S301, first, only to rough surface
Degree has an impact, and plays rolling polishing effect；Second is that generating material plasticity deformation, internal material gap is reduced, generate strain
Hardening effect；And then judge rolling power magnitude range, so as to adjust the amount of feeding of rolling wheel.
3D printing nozzle in the step S401 is run according to printing path on printing substrate, makes two-dimensional section thin slice
Layer gradually molding, the automatic powder feeding system take coaxial powder-feeding mode, and the powder particle is 50~100 μm of alloy powder particles,
The laser be CO2 lasers or optical fiber laser, laser power P=1000-4000W, scan velocity V=2-
15mm/s, single track width are 2-6mm, overlapping rate 30-40%.
The height currently processed according to product in the step S501 is rolled, the rolling using different rolling power
Power gradually increases with the increase of product working height, pressure big appearance when avoiding low layer, lamination, and the pressure in high level
It is insufficient.
The running orbit of laser, 3D printing nozzle and rolling wheel in the step S601 is by computer molding control
Software obtains the profile information after threedimensional model is sliced and is controlled.Based on 3D printing walking path feature, the rolling technology road
Diameter mainly includes linear fashion and circular arc wise manner；Straight line path rolling includes the walking phase on working face and path integration rank
Section.The walking phase, laser move along a straight line while the metallic particles that 3D printing nozzle sprays is melted, rolling wheel edge
The printing path for laser movement carries out straight line rolling.The path integration stage, the work of 3D printing nozzle and rolling work
It carries out respectively, 3D printing nozzle holding position is constant, while rolling wheel realizes turning for direction using nozzle as the center of circle along most short circular arc
It changes, conversion angle is identical with the angle of transformed walking path for 3D printing nozzle original walking path.
Printable layer is successively superimposed cooling in the step S701, and the waste heat generated with rolling process is laser machined for processing,
Simultaneously because coaxial powder-feeding utilization rate is relatively low, a large amount of powder is caused to stay in surface of shaped parts, unfavorable shadow is generated to heat dissipation to avoid
It rings, is cooled down in laser gain material manufacturing process using air blower is air-cooled, reduce the heat accumulation in forming process.
Beneficial effects of the present invention：
The present invention is a kind of low cost process for obtaining great surface quality, not only can be effectively by synchronous rolling and processing
Article surface roughness is reduced, and article surface can be strengthened, improves article surface hardness.Meanwhile the mistake of material reinforcement
Metal structure has been refined in journey, merged and has absorbed the compactness for by the fault in material of pressure lower face, improving product.Rolling
The major influence factors of quality have the structure of rolling feed, rolling speed, rolling tools.Rolling feed is smaller, rolls matter
Amount is better.Rolling speed influences less quality after rolling, therefore can increase substantially rolling efficiency.It is coarse to roll rear surface
Degree can reduce by 1~2 grade.For the metal material that hardness is low, plasticity is good, which has good applicability.Part shearing resistance is strong
Degree improves 3%~5%, and fatigue strength improves 10~15%, and hardness improves 30~40%, porosity 0.2~0.5%.
Description of the drawings
Fig. 1 is the flow chart of the present invention.
Fig. 2 is the specific steps flow chart of the present invention.
Fig. 3 is 3D printing apparatus structure schematic diagram used in the method for the present invention.
Fig. 4 is the rolling schematic diagram of the present invention,
Fig. 5 is the rolling article surface mass change schematic diagram of the present invention,
In figure：1- linear motors；1a- servo motors；2- tumblers；3-3D printing heads；4- rolling devices；5- waves
Peak；6- troughs；7- fillers；Diameter before d1- rolling；Diameter after d2- rolling；H1- rolls front surface roughness height；H2- is rolled
Press rear surface roughness height.
Specific embodiment
Referring to Fig. 1 and Fig. 2, the present invention is achieved by the following scheme：It is a kind of that product is manufactured to powder feeding formula laser gain material
Synchronize modified method, packet following steps：
A. the threedimensional model for treating 3D printing object is established：
Software building threedimensional model is manufactured with CAD and generates stl file.
B. threedimensional model slicing treatment：
The stl file that made model is defined using computer program analysis generates two dimension slicing, obtains profile information.
C. prepare before printing shaping：
S101：According to the material stress of Laser Processing product and processing product initial roughness, suitable rolling wheel is selected
Size；
S201：The rolling wheel height for realizing rolling function is calibrated；
S301：To having calibrated the rolling wheel of height, rolling and processing effect is reached according to needed for product and differentiates rolling pressure size
Range, and then adjust the amount of feeding of rolling wheel.
D. laser printing is molded and completes to synchronize modification：
S401：3D printing nozzle is run according to printing path on printing substrate；
S501：It, can be according to the relative altitude of current product processing, adjustment rolling pressure size in print procedure；
S601：To completing the rolling wheel of rolling pressure size adjustment, synchronize and follow rolling work.
S701：Printable layer is successively superimposed, and metallic article is formed after cooling.
The rolling wheel of the present invention is driven by linear motor, according to cylindrical rolling wheel, is then rolled length and is beaten slightly larger than 3D
The diameter of nozzle is printed, the dimension scale relationship for rolling length and jet diameters is 5:6, referring to Fig. 3 and Fig. 4.According to ball-type
Rolling wheel meets Rz=f2/ 8r (r is milled head radius, and f is rolling feed, and Rz is material initial surface roughness), is beating
Rolling wheel follows the printing path of 3D printing nozzle to be carried out at the same time the rolling of product during print.
The least significant end of rolling wheel least significant end and nozzle is adjusted to sustained height, calibrates the initial position of rolling wheel, secondly
Rolling wheel extreme lower position is adjusted, plane to be processed is made to be contacted with rolling wheel lower surface.
Reach rolling and processing effect according to needed for Laser Processing product, first, only being had an impact to surface roughness, play
Rolling polishing effect；Second is that generating material plasticity deformation, internal material gap is reduced, generate strain hardening effect；And then sentence
Surely power magnitude range is rolled, so as to adjust the amount of feeding of rolling wheel.
3D printing nozzle is run according to printing path on printing substrate, and two-dimensional section lamella is made gradually to be molded, is taken
Coaxial powder-feeding mode, powder particle are 50~100 μm of alloy powder particles, and laser is CO2 lasers or optical fiber laser, is swashed
Light device power P=1000-4000W, scan velocity V=2-15mm/s, single track width are 2-6mm, overlapping rate 30-40%.
The height currently processed according to product is rolled using different rolling power, which processes with product
The increase of height gradually increases, pressure big appearance when avoiding low layer, lamination, and the insufficient pressure in high level.
The profile information after threedimensional model slice is obtained by computer molding control software to be controlled.Based on 3D printing
Walking path feature, the rolling technology path mainly include linear fashion and circular arc wise manner；Straight line path rolling includes work
Walking phase and path integration stage on face.Straight line moving stage, laser melt the metallic particles that 3D printing nozzle sprays
While move along a straight line, the printing path that rolling wheel is moved along laser carries out straight line rolling.Roll path integration stage, 3D
Printing head works to carry out respectively with rolling work, and 3D printing nozzle holding position is constant, while rolling wheel is using nozzle as the center of circle,
The conversion in direction, folder of the conversion angle for 3D printing nozzle original walking path and transformed walking path are realized along most short circular arc
Angle is identical.
For the waste heat that processing Laser Processing and rolling process generate, simultaneously because coaxial powder-feeding utilization rate is relatively low, cause big
Amount powder stays in surface of shaped parts, and to avoid having an adverse effect to heat dissipation, air blower is used in laser gain material manufacturing process
It is air-cooled to be cooled down, reduce the heat accumulation in forming process.
Embodiment 1：
The 3D increasing material manufacturings realization for carrying out plane product in the present embodiment for titanium alloy powder synchronizes modification, utilizes rolling
Technique strengthens 3D printing article surface, and hardness strength gets a promotion, while has refined metal material interior tissue, referring to Fig. 5,
It merges and absorbs the compactness for by the fault in material of pressure lower face, improving product.Selected titanium alloy powder particle is 50
~100 μm of powder particles, with Rz=2 μm of initial surface roughness, it is that 500-1000N is that titanium alloy material, which selects common rolling power,
Example, a diameter of 5mm of milled head selected by the present embodiment；The laser is optical fiber laser, and laser power P=4000W is swept
Speed V=12mm/s is retouched, single track width is 4mm, overlapping rate 30-40%.In Fig. 5,5- wave crests；6- troughs；7- fillers；
Diameter before d1- rolling；Diameter after d2- rolling；H1- rolls front surface roughness height；H2- rolls rear surface roughness height.
Embodiment 2：
The selection of rolling mode can be determined according to the shape of metalwork to be printed.Such as the metalwork printed is single
, there are high requirements in the metal handicrafts of layer or 3D printing product upper surface for workpiece surface quality.
Step in the embodiment 2 is same as Example 1, and only slightly different for specific process parameter, selected powder particle
For 50~100 μm of powder particles, the selected a diameter of 6mm of milled head；The laser is CO2 lasers, laser power P=
2000W, scan velocity V=8mm/s, single track width are 4mm, overlapping rate 30-40%.
According to the smaller rolling power of required effect selection, the amount of feeding and the relatively low rolling wheel of surface roughness.It is specific real
Mode is applied, intensity, stressing conditions and design requirement in metalwork all directions should be considered, required design synchronizes modification side
Formula.
The present invention be it is a kind of to powder feeding formula laser gain material manufacture product synchronize modified method, in the rolling process first,
The rolling process is synchronous with 3D printing process to carry out, second, change existing equipment is not needed to, third, there is event in rolling step
The quality of existing equipment processing product is had no effect on during barrier.To sum up, the present invention can not influence existing equipment machining accuracy, simultaneously
Intensity, the reliability that product can be increased are high.
As shown in figure 3,3D printing device used in the method for the present invention includes linear motor 1, servo motor 1a, rotation dress
2,3D printing nozzle 3 and rolling device 4 are put, 4 bottom of rolling device has rolling wheel 41, and linear motor 1 can drive rolling wheel
41 rotations；3D printing nozzle 3 and rolling device 4 are located at 2 lower section of tumbler, and linear motor 1 drives 3D printing nozzle 3 to work.
Claims (9)
1. a kind of synchronize modified method to powder feeding formula laser gain material manufacture product, it is characterised in that：Include the following steps：
A. the threedimensional model for treating 3D printing object is established：
Software building threedimensional model is manufactured with CAD and generates stl file；
B. threedimensional model slicing treatment：
The stl file that made model is defined using computer program analysis generates two dimension slicing, obtains profile information.
C. prepare before printing shaping：
S101：According to the material stress of Laser Processing product and processing product initial roughness, suitable rolling size of wheel is selected；
S201：The idler wheel height for realizing rolling function is calibrated；
S301：To having calibrated the rolling wheel of height, rolling and processing effect is reached according to needed for product and differentiates rolling power magnitude range,
And then adjust the amount of feeding of rolling wheel；
D. laser printing is molded and completes to synchronize modification：
S401：3D printing nozzle is run according to printing path on printing substrate；
S501：In print procedure, according to the relative altitude that current product is processed, adjustment rolling pressure size；
S601：To completing the rolling wheel of rolling pressure size adjustment, synchronize and follow rolling work；
S701：Printable layer is successively superimposed, and metallic article is formed after cooling.
2. it is according to claim 1 it is a kind of to powder feeding formula laser gain material manufacture product synchronize modified method, feature exists
In：In the step S101, the rolling wheel is driven by linear motor, according to cylindrical roller, is then rolled length and is more than
The dimension scale relationship of the diameter of 3D printing nozzle, rolling length and 3D printing jet diameters is 5:6, it is rolled according to ball-type
Wheel, meets Rz=f2/ 8r, r are rolling wheel radius, and f is rolling feed, and Rz is material initial surface roughness, is being printed
Rolling wheel follows the printing path of 3D printing nozzle to be carried out at the same time the rolling of product in journey.
3. it is according to claim 1 it is a kind of to powder feeding formula laser gain material manufacture product synchronize modified method, feature exists
In：In the step S201, including the least significant end of rolling wheel least significant end and 3D printing nozzle is adjusted to sustained height, school first
Secondly the initial position of quasi- rolling wheel is adjusted rolling wheel extreme lower position, plane to be processed is made to be connect with rolling wheel lower surface
It touches.
4. it is according to claim 1 it is a kind of to powder feeding formula laser gain material manufacture product synchronize modified method, feature exists
In：Reach rolling and processing effect according to needed for Laser Processing product in the step S301, first, only being produced to surface roughness
It is raw to influence, play rolling polishing effect；Second is that generating material plasticity deformation, internal material gap is reduced, generate strain hardening
Effect；And then judge rolling power magnitude range, so as to adjust the amount of feeding of rolling wheel.
5. it is according to claim 1 it is a kind of to powder feeding formula laser gain material manufacture product synchronize modified method, feature exists
In：3D printing nozzle in the step S401 is run according to printing path on printing substrate：Make two-dimensional section lamella by
It is gradually molded, automatic powder feeding system takes coaxial powder-feeding mode, and powder particle is 50~100 μm of alloy powder particles, and laser is CO2 laser
Device or optical fiber laser, laser power P=1000-4000W, scan velocity V=2-15mm/s, single track width are 2-
6mm, overlapping rate 30-40%.
6. it is according to claim 1 it is a kind of to powder feeding formula laser gain material manufacture product synchronize modified method, feature exists
In：In the step S501, the height currently processed according to product is rolled using different rolling power, the rolling power with
The increase for product working height gradually increases, pressure big appearance when avoiding low layer, lamination, and pressure is not in high level
Foot.
7. it is according to claim 1 it is a kind of to powder feeding formula laser gain material manufacture product synchronize modified method, feature exists
In：The running orbit of laser, 3D printing nozzle and rolling wheel in the step S601 is by computer molding control software
The profile information after threedimensional model slice is obtained to be controlled；Based on 3D printing walking path feature, rolling technology path packet
Include linear fashion and circular arc wise manner；Straight line path rolling includes the walking phase on working face and path integration stage；Described
Walking phase, laser move along a straight line while the metallic particles that 3D printing nozzle sprays is melted, and rolling wheel is moved along laser
Dynamic printing path carries out straight line rolling；The path integration stage, the work of 3D printing nozzle carry out respectively with rolling work,
3D printing nozzle holding position is constant, while rolling wheel realizes the conversion in direction along most short circular arc using 3D printing nozzle as the center of circle,
Conversion angle is identical with the angle of transformed walking path for 3D printing nozzle original walking path.
8. it is according to claim 1 it is a kind of to powder feeding formula laser gain material manufacture product synchronize modified method, feature exists
In：Printable layer is successively superimposed cooling in the step S701, the waste heat generated to handle Laser Processing with rolling process, while by
It is relatively low in coaxial powder-feeding utilization rate, a large amount of powder is caused to stay in surface of shaped parts, to avoid having an adverse effect to heat dissipation, are being swashed
It is cooled down during light increasing material manufacturing using air blower is air-cooled, reduces the heat accumulation in forming process.
9. the 3D printing device used in claim 1 the method, it is characterised in that：Include linear motor (1), servo motor
(1a), tumbler (2), 3D printing nozzle (3) and rolling device (4), rolling device (4) bottom have rolling wheel (41),
Linear motor (1) can drive rolling wheel (41) to rotate；3D printing nozzle (3) and rolling device (4) are under tumbler (2)
Side, linear motor (1) drive 3D printing nozzle (3) to work.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810176392.5A CN108247056B (en) | 2018-03-03 | 2018-03-03 | Method for synchronously modifying powder feeding type laser additive manufacturing part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810176392.5A CN108247056B (en) | 2018-03-03 | 2018-03-03 | Method for synchronously modifying powder feeding type laser additive manufacturing part |
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| CN108247056B CN108247056B (en) | 2020-04-24 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111299579A (en) * | 2020-03-09 | 2020-06-19 | 深圳市晶莱新材料科技有限公司 | Method for improving internal quality of SLM metal printing product |
| CN112008976A (en) * | 2019-05-31 | 2020-12-01 | 西门子股份公司 | Additive manufacturing device and method |
| CN112657721A (en) * | 2020-12-08 | 2021-04-16 | 山东大学 | Coating online rolling device and control method thereof |
| CN112776321A (en) * | 2021-02-04 | 2021-05-11 | 西京学院 | 3D printing system and method for improving surface quality of model |
| CN112893764A (en) * | 2021-01-21 | 2021-06-04 | 大连理工大学 | 3D printing coated silica sand for optical fiber laser processing and preparation method thereof |
| CN112917918A (en) * | 2020-12-25 | 2021-06-08 | 武汉路然科技有限责任公司 | 3D printing material laminating method |
| CN113093646A (en) * | 2021-04-01 | 2021-07-09 | 上海酷鹰机器人科技有限公司 | Movement track planning method and device for rotary equipment for tracking printing nozzle |
| KR102331858B1 (en) * | 2021-01-07 | 2021-12-01 | 삼성엔지니어링 주식회사 | Surface rolling type 3d printer for construction |
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| KR20220039134A (en) * | 2020-09-21 | 2022-03-29 | 주식회사 제이앤에스엘인터내셔널 | Cement injection nozzle device for construction 3d printer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109986206A (en) * | 2019-04-11 | 2019-07-09 | 上海联擎动力技术有限公司 | Increasing material manufacturing device and its working method |
| CN112008976A (en) * | 2019-05-31 | 2020-12-01 | 西门子股份公司 | Additive manufacturing device and method |
| CN112008976B (en) * | 2019-05-31 | 2023-01-31 | 西门子股份公司 | Additive manufacturing device and method |
| CN111299579A (en) * | 2020-03-09 | 2020-06-19 | 深圳市晶莱新材料科技有限公司 | Method for improving internal quality of SLM metal printing product |
| KR102439248B1 (en) | 2020-09-21 | 2022-09-01 | 주식회사 제이앤에스엘인터내셔널 | Cement injection nozzle device for construction 3d printer |
| KR20220039134A (en) * | 2020-09-21 | 2022-03-29 | 주식회사 제이앤에스엘인터내셔널 | Cement injection nozzle device for construction 3d printer |
| CN112657721A (en) * | 2020-12-08 | 2021-04-16 | 山东大学 | Coating online rolling device and control method thereof |
| CN112917918A (en) * | 2020-12-25 | 2021-06-08 | 武汉路然科技有限责任公司 | 3D printing material laminating method |
| KR102331858B1 (en) * | 2021-01-07 | 2021-12-01 | 삼성엔지니어링 주식회사 | Surface rolling type 3d printer for construction |
| KR102331860B1 (en) * | 2021-01-07 | 2021-12-01 | 삼성엔지니어링 주식회사 | Surface treatment type 3d printer for construction |
| CN116568510A (en) * | 2021-01-07 | 2023-08-08 | 三星工程株式会社 | 3D printer for printed matter surface treatment type construction |
| US20230390959A1 (en) * | 2021-01-07 | 2023-12-07 | Samsung Engineering Co., Ltd. | Printed object surface flattening-type 3d printer for construction |
| CN112893764B (en) * | 2021-01-21 | 2022-04-12 | 大连理工大学 | 3D printing coated silica sand for optical fiber laser processing and preparation method thereof |
| CN112893764A (en) * | 2021-01-21 | 2021-06-04 | 大连理工大学 | 3D printing coated silica sand for optical fiber laser processing and preparation method thereof |
| CN112776321A (en) * | 2021-02-04 | 2021-05-11 | 西京学院 | 3D printing system and method for improving surface quality of model |
| CN113093646A (en) * | 2021-04-01 | 2021-07-09 | 上海酷鹰机器人科技有限公司 | Movement track planning method and device for rotary equipment for tracking printing nozzle |
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