CN108723364A - 3D shape manufacture powder feeding devices - Google Patents
3D shape manufacture powder feeding devices Download PDFInfo
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- CN108723364A CN108723364A CN201810199505.3A CN201810199505A CN108723364A CN 108723364 A CN108723364 A CN 108723364A CN 201810199505 A CN201810199505 A CN 201810199505A CN 108723364 A CN108723364 A CN 108723364A
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- powder
- molten bath
- processing head
- powderject
- height
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Classifications
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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
- 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
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
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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
- B22F10/30—Process control
-
- 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
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/57—Metering means
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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
- B22F12/90—Means for process control, e.g. cameras or sensors
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/264—Arrangements for irradiation
- B29C64/268—Arrangements for irradiation using laser beams; using electron beams [EB]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
-
- 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
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/53—Nozzles
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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 relates to 3D shape manufacture powder feeding devices, including processing head, speed detecting portion and control unit.Processing head has：Laser irradiating part, for irradiating laser beam, with the powder of melting supply to molten bath；Powderject portion is arranged in the outside of laser irradiating part, for spraying the powder to be supplied to molten bath.Speed detecting portion detects the movement speed of processing head along machining path.Control unit receives the movement speed data of processing head from speed detecting portion, when the movement speed of processing head reduces, processing head or powderject portion is made to increase, to reduce the amount of the powder supplied to molten bath.
Description
Technical field
The present invention relates to a kind of 3D shapes manufacture powder feeding device (Apparatus for supplying powder
For manufacturing three dimensional shapes), more specifically, it is related to repeating to implement following operation
The 3D shape manufacture powder feeding devices of 3D shapes are manufactured, i.e., irradiating laser beam while supplying powder to molten bath carrys out deposition
Powder, to form powder bed.
Background technology
In general, 3D printing refers to that the CAD data of the product to that will manufacture is sliced in one direction on computers,
And the two-dimensional section shape after slice is printed into lamination to manufacture the device of 3D shapes successively.
3D printing is mainly used for the sample making before new product is launched, and to detect and correct in actual product, there are assorted
Problem, recently, with the development of 3D printing process and material properties, the durability and size essence of the product that 3D printing produces
Degree is improved, and application field is gradually expanded.
3D printing can be divided into：By nozzle or aperture selectively extrded material come the method that carries out lamination；Utilize spray
The method that black head drips material ink to carry out lamination；To liquid resin or the dusty material irradiating ultraviolet light or laser of coating
Beam, the method for making its hardening or deposition carry out lamination；The adhesive of liquid condition is selectively spilt to powder using ink gun
The method that lamination is carried out on powder material；Carry out the method etc. of lamination powder bed to molten bath supply powder, the molten bath is by by laser
Beam or Electron Beam Focusing obtain on basal part surface.
Fig. 1 is shown by irradiating the profit in the method for powder P that laser beam L is supplied come deposition to form powder bed 1
The figure of the existing method of powder bed is formed with processing head.
Referring to Fig.1, processing head 10 is made of laser irradiating part 11 and powderject portion 12, and laser irradiating part 11 is for irradiating
Laser beam L, the laser beam L are used to melt the powder P that the molten bath 3 formed in basad portion 2 supplies；Powderject portion 12 is used for
The powder P that injection will be supplied to molten bath 3.
Pass through and repeats following action, that is, so that processing head 10 is moved to a direction on one side, it on one side will be in the basad portions powder P 2
The molten bath 3 of formation is sprayed, and is irradiated laser beam L from processing head 10 and carried out melting and solidification powder bed 1, thus by 1 lamination of powder bed
Multilayer and then formation 3D shapes.
However, all the time, during moving processing head 10 along machining path, no matter the mobile speed of processing head 10
How is degree, supplies equivalent powder P to molten bath 3, therefore the height of powder bed 1 partially will be different, and generates powder bed 1
The non-uniform problem in surface.
For example, being constituted if machining path is combined by straight line portion and corner part, mobile speed of the processing head 10d in straight line portion
Spend it is relatively fast, it is relatively slow in the movement speed of corner part.So, if the position fast to the movement speed of processing head 10
S1 and slow position S2 comparably supply powder P, then in the amount of the powder P of the slow position S2 laminations of the movement speed of processing head 10
It can become more, the height of the powder bed 1 on corresponding position is caused to become relatively high.
In order to form 3D shapes, needs 1 laminated multi-layer of powder bed, but if the height tolerance of powder bed 1 is made to continue
Repetition is accumulated on same position, then final product size obtained can be caused bad.
In addition, when the part height of the powder bed 1 of lamination forms relatively high, if continuing to supply the powder of equivalent
Last P then forms relatively also high, causes product size bad in the corresponding site height of final product obtained.
Invention content
An aspect of of the present present invention provides a kind of 3D shapes manufacture powder feeding device, by reception for pulverized powder
The movement speed of processing head or the altitude information of powder bed control supply to the amount of the powder in molten bath, so as to adequate relief
At the surface of powder bed, and the dimensional accuracy of final product obtained can be improved.
The 3D shape manufactures of one embodiment of the invention include with powder feeding device：Processing head has laser irradiating part
With powderject portion, the laser irradiating part is supplied in the powder in molten bath, the powderject with melting for irradiating laser beam
Portion is arranged in the outside of the laser irradiating part, for spraying the powder to be supplied to the molten bath；Speed detecting portion, along adding
The movement speed of processing head described in work path detection；Control unit receives the mobile speed of the processing head from the speed detecting portion
Degrees of data makes the processing head or the powderject portion rise when the movement speed of the processing head reduces, with reduce to
The amount of the powder of the molten bath supply.
The laser beam exposes to the powder to form the molten bath, the powder by the central portion of the processing head
End, which tilts around the laser beam towards the molten bath, sprays, when to reduce amount of the supply to the powder in the molten bath,
The convergent powder convergence point of the powder is set to be located at the position higher than the surface in the molten bath.
The laser irradiating part and the powderject portion are configured to make a relative move in the up-down direction；When
When the movement speed of the processing head reduces, the control unit makes the relatively described laser irradiating part in the powderject portion rise,
To reduce supply to the amount of the powder in the molten bath.
The laser irradiating part and the powderject portion are integrally formed；When the movement speed of the processing head reduces,
The control unit makes the laser irradiating part and the powderject portion rise together to reduce supply to the powder in the molten bath
Amount.
The 3D shape manufactures of another embodiment of the present invention include with powder feeding device：Processing head has laser irradiation
Portion and powderject portion, the laser irradiating part are supplied in the powder in molten bath, the powder spray with melting for irradiating laser beam
The portion of penetrating is arranged in the outside of the laser irradiating part, for spraying the powder to be supplied to the molten bath；Height detection portion, along
The height or the powder deposition of machining path detection basal part are formed by the height of powder bed；Control unit, from the height
Test section receives the height of the basal part or the altitude information of the powder bed, the height when the basal part or the powder
When the height of layer increases, the processing head or the powderject portion is made to increase, is supplied to the powder in the molten bath to reduce
Amount.
The laser beam exposes to the powder to form the molten bath, the powder by the central portion of the processing head
End, which tilts around the laser beam towards the molten bath, sprays；When to reduce amount of the supply to the powder in the molten bath,
The convergent powder convergence point of the powder is set to be located at the position higher than the surface in the molten bath.
The laser irradiating part and the powderject portion are configured to make a relative move in the up-down direction；When
When the height of the basal part or the height of the powder bed increase, the control unit makes the powderject portion is relatively described to swash
Illumination part rises, to reduce supply to the amount of the powder in the molten bath.
The laser irradiating part and the powderject portion are integrally formed；Height when the basal part or the powder bed
Height when increasing, the control unit makes the laser irradiating part and the powderject portion together rise to supply to institute to reduce
State the amount of the powder in molten bath.
The 3D shape manufacture powder feeding devices of one embodiment of the invention can be formed uniformly the surface of powder bed,
And the dimensional accuracy of final product obtained can be improved.
In addition, capableing of the height of real-time control powder bed.
Description of the drawings
Fig. 1 is the figure for showing to be formed the existing method of powder bed using processing head.
Fig. 2 is the figure for the 3D shape manufacture powder feeding devices for schematically showing one embodiment of the invention.
Fig. 3 is the figure shown for the principle of the 3D shape manufacture powder feeding devices of definition graph 2.
Fig. 4 is the figure of the working condition of the processing head of the 3D shape manufacture powder feeding devices for definition graph 2.
Fig. 5 is the working condition of the variation of the processing head of the 3D shape manufacture powder feeding devices for definition graph 2
Figure.
Fig. 6 is the figure for the 3D shape manufacture powder feeding devices for schematically showing another embodiment of the present invention.
Fig. 7 is the figure shown for the principle of the 3D shape manufacture powder feeding devices of definition graph 6.
Reference sign
100：3D shape manufacture powder feeding devices
110：Processing head
111：Laser irradiating part
112：Powderject portion
120：Speed detecting portion
130：Control unit
Specific implementation mode
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can be easy to implement.This
Invention can be embodied with various forms, the embodiment for place's explanation that but it is not limited to this.
In order to clearly state the present invention, therefore the part unrelated with explanation is omitted in the accompanying drawings, it is right throughout the specification
Same or analogous inscape uses identical reference numeral.
Throughout the specification, the case where some part with another part " connection " includes " being directly connected to " and by another
The case where component " being indirectly connected with ".In addition, if without other it is special illustrate, some inscape of certain a part of " comprising " is
Referring to can also include other inscapes rather than exclude other inscapes.
Hereinafter, the embodiment for the 3D shape manufacture powder feeding devices that present invention will be described in detail with reference to the accompanying.
Fig. 2 is the figure for the 3D shape manufacture powder feeding devices for schematically showing one embodiment of the invention.
With reference to Fig. 2, the 3D shapes manufacture of the present embodiment is made with powder feeding device 100 for repeating to implement following operation
Make 3D shapes, that is, irradiate laser beam while supplying powder to molten bath and carry out coating power, to form powder bed, the powder
Last feedway 100 includes processing head 110, speed detecting portion 120 and control unit 130.
The processing head 110 is for irradiating laser beam L and pulverized powder P, including laser irradiating part 111 and powderject portion
112。
Laser irradiating part 111 irradiates laser beam L to melt the powder P for being supplied in molten bath 3.The setting of laser irradiating part 111 exists
The central portion of processing head 110, inside can be equipped with collector lens (not shown), for making the output (not shown) from laser output section pass
The laser beam L sent is focused.
Powderject portion 112 is arranged for spraying the powder P to be supplied to molten bath 3 in the outer of laser irradiating part 111
Side.Nozzles of the next powder P via powderject portion 112 is supplied from the powder feeding device for being provided separately within outside is (not shown)
112a sprays to molten bath 3.Laser beam L is radiated at the powder P supplied on molten bath 3, by the thermal energy of the laser beam L of irradiation, makes powder P
Deposition and form powder bed 1.
The nozzle 112a in powderject portion is formed as the form of multiple spray-holes, and the multiple spray-hole shines along laser
It penetrates around portion 111 and separates predetermined angular configuration, may be alternatively formed to the annular spray pore morphology around laser irradiating part 111.
The speed detecting portion 120 detects the movement speed of processing head 110 along machining path.
Machining path in this specification refers to irradiating laser beam L and pulverized powder P on one side, moving processing head 110 on one side
With the path for the powder bed 1 that lamination is correspondingly formed with final shape of product obtained.
As described above, processing head 110 is not moved on entire machining path with identical movement speed.For example, working as
Machining path is combined by straight line portion and corner part when constituting, and the movement speed of processing head 110 is relatively fast usually on straight line portion, and
The movement speed of processing head 110 is relatively slow on corner part.
During processing head 110 is moved along machining path, speed detecting portion 120 detects the processing on machining path in real time
First 110 movement speed, and the movement speed data of detection are transmitted to 130 side of aftermentioned control unit.
The control unit 130 receives the movement speed data of processing head 110 from speed detecting portion 120, when processing head 110
When movement speed reduces, the amount of the powder P supplied to molten bath 3 is reduced.
If the position S1 fast to the movement speed of processing head 110 and slow position S2 comparably supply powder P, adding
The quantitative change for the powder P that the slow position S2 of the movement speed of foreman 110 is supplied to molten bath 3 is more, leads to the powder bed 1 of corresponding position
Height relatively heightens.
Therefore, in the present invention, the powder P's supplied to molten bath 3 on the position S1 fast with the movement speed of processing head 110
Amount is compared, reduce on the slow position of the movement speed of processing head 110 to molten bath 3 supply powder P amount, so as to
Make the highly homogeneously formation of powder bed 1 on entire machining path.
It is a feature of the present invention that when the movement speed of processing head 110 reduces, make processing head 110 or powderject portion
112 rise, to reduce the amount of the powder P supplied to molten bath 3.
The method of the amount of the powder P supplied to molten bath 3 on the position S2 slow as the movement speed for reducing processing head 110,
It is also contemplated that the powder that control is supplied from the powder feeding device (not shown) for being provided separately within outside to powderject portion 112
The method of the amount of P.
However, when transporting in this way, set at the time of detecting the movement speed of processing head 110 in real time and on control outside
The powder feeding device set causes so as to generate delay between at the time of the powder P of amount after 112 injection control of powderject portion
In the slow position S2 of the movement speed of processing head 110, there is no the powder P after injection decrement, but after having crossed and should spray decrement
Powder P position after, in other positions injection decrement after powder P.
Therefore, excellent in order in real time associate the amount of the movement speed of processing head 110 and the powder P for being supplied in molten bath 3
Selection of land is detected the movement speed of processing head 110 and directly makes processing in the slow position S2 of the movement speed of processing head 110
First 110 or powderject portion 112 rise, to reduce the amount of the powder P supplied to molten bath 3.
Fig. 3 is the figure shown for the principle of the 3D shape manufacture powder feeding devices of definition graph 2.
Powder P is exposed to form molten bath 3 by the central portion of processing head 110 with reference to Fig. 3, laser beam L, powder P exists
It tilts and sprays towards molten bath 3 around laser beam L, to form powder bed 1 on basal part 2.
As shown in Fig. 3 (a), in the fast position S1 of the movement speed of processing head 110, the focus LF and powderject of laser beam
The convergent powder convergence point PC of powder P that portion 112 is sprayed converge in molten bath 3.Since powder P is the direction around laser beam L
Downside tilts injection, therefore the convergent powder convergence point PC of powder P indicate the relatively more position of the supply amount of powder P.This
Under state, the amount of the powder P supplied to molten bath 3 is relatively more.
As shown in Fig. 3 (b), in the position S2 that the movement speed of processing head 110 is slow, processing head 110 or powderject portion 112
Rise, to which the convergent powder convergence point PC of powder P are located at the position higher than the surface in molten bath 3.It is sprayed from powderject portion 112
Powder P after powder convergence point PC convergence, disperse in the downside of powder convergence point PC, therefore even if from powderject portion 112
The amount of the powder P of injection is identical, but the amount for actually entering the powder P in molten bath 3 is relatively smaller.
To which the position by adjusting powder convergence point PC makes confession in the fast position S1 of the movement speed of processing head 110
It is relatively more to the amount of the powder P to molten bath 3, and the position S2 slow in the movement speed of processing head 110, make supply to molten bath 3
The amount of powder P is relatively smaller, to make the height of the powder bed 1 formed along machining path integrally remain uniform.
It later, certainly also can be by making processing head 110 or powder spray if the movement speed of processing head 110 increases again
Portion 112 is penetrated to decline to increase the amount for the powder P for being supplied in molten bath 3.
The processing head of the 3D shapes manufacture powder feeding device of the present embodiment can be constituted as follows.
Fig. 4 is the figure of the working condition of the processing head of the 3D shape manufacture powder feeding devices for definition graph 2.
With reference to Fig. 4, the laser irradiating part 111 and powderject portion 112 that constitute processing head 110 are configured to upper and lower
It is made a relative move on direction.
In the fast position S1 of the movement speed of processing head 110, laser irradiating part 111 and the configuration of powderject portion 112 are in phase
Same height becomes more relatively to which powder convergence point PC converges in molten bath 3 and then supplies to the amount of the powder P in molten bath 3.In processing head
The slow position S2 of 110 movement speed, makes 112 relative laser irradiation portion 111 of powderject portion rise, to powder convergence point PC
Positioned at the position higher than the surface in molten bath 3, tail off to which the amount of the powder P of supply to molten bath 3 is opposite.
Make the structure that 112 relative laser irradiation portion 111 of powderject portion lifts can be by laser irradiating part 111 and powder
Linear motion unit is set to realize, the structure about this linear motion unit is due to being this field skill between ejection section 112
The generally known technology of art personnel, therefore detailed description will be omitted.
On the other hand, processing head 110 also may be configured as structure shown in fig. 5.Fig. 5 is the 3D shape systems for definition graph 2
Make the figure of the working condition of the variation of the processing head with powder feeding device.
With reference to Fig. 5, the laser irradiating part 111 ' and powderject portion 112 ' that constitute processing head 110 ' may be integrally formed.
In the fast position S1 of the movement speed of processing head 110 ', laser irradiating part 111 ' and powderject portion 112 ' are located at height
Identical position is spent, becomes more relatively to which powder convergence point PC converges in molten bath 3 and then supplies to the amount of the powder P in molten bath 3.?
The slow position S2 of the movement speed of processing head 110 ', makes laser irradiating part 111 ' rise together with powderject portion 112 ', to
Powder convergence point PC is located at the position higher than the surface in molten bath 3, tails off to which the amount of the powder P of supply to molten bath 3 is opposite.
The focus LF of laser beam L has the depth of focus (depth offocus) of specific length.Therefore, as even if as described above
Laser irradiating part 111 ' rises together with powderject portion 112 ', which, therefore can be constant also in focal depth range
Maintenance exposes to the intensity (intensity) of the laser beam L in molten bath 3.
Make the structure that laser irradiating part 111 ' lifts together with powderject portion 112 ' can be by being arranged in processing head 110 '
Linear motion unit realizes that the structure about this linear motion unit is due to being the generally known skill of those skilled in the art
Art, therefore detailed description will be omitted.
On the other hand, Fig. 6 is the 3D shape manufacture powder supply dress for schematically showing another embodiment of the present invention
The figure set, Fig. 7 are the figures shown for the principle of the 3D shape manufacture powder feeding devices of definition graph 6.
With reference to Fig. 6 and Fig. 7, the 3D shapes manufacture of the present embodiment includes processing head 210, speed with powder feeding device 200
Test section 220 and control unit 230.
The processing head 210 is the component for irradiating laser beam L and pulverized powder P, has laser irradiating part 211 and powder
Last ejection section 212.
The irradiation of laser irradiating part 211 is supplied with melting to molten bath 3 from the laser beam L of the output transmission of laser output section 201
Powder P, powderject portion 212 are arranged in the outside of laser irradiating part 211 for spraying the powder P to be supplied to molten bath 3.
The processing head 210 of the present embodiment actually with Fig. 2 shows 110 function of processing head of embodiment it is identical, therefore save
Slightly repeated explanation.
The height of basal part 2 detects along machining path in the height detection portion 220 or powder deposition is formed by powder
The height of layer 1.
During processing head 210 is moved along machining path, the height of basal part 2 or the height of powder bed 1 may not
It can be formed uniformly on entire machining path.Although foring powder by desired height H1 on some positions of machining path
Last layer 1, but since processing conditions equal error causes the height H2 of powder bed to be formed relatively high in other positions.
During processing head 210 is moved along machining path, the base on machining path is detected in height detection portion 220 in real time
The height of bottom 2 or the height of powder bed 1, and the altitude information of detection is transmitted to 230 side of aftermentioned control unit.
The control unit 230 receives the height of basal part 2 or the altitude information of powder bed 1 from height detection portion 220, works as base
When the height of bottom 2 or the height of powder bed 1 increase, the amount of the powder P supplied to molten bath 3 is reduced.
If position H1 normal to the height of powder bed 1 and high position H2 comparably supply powder P, layer can be continued
The powder bed 1 of product same thickness, to which other are compared in the part of the high position H2 of height of powder bed 1 in final product obtained
Part can protrude to be formed.
Therefore, in the present invention, the amount phase with the powder P supplied to molten bath 3 on the normal position H1 of height of powder bed 1
Than the amount of the powder P supplied to molten bath 3 on the high position H2 of the height of powder bed 1 being reduced, so as to entirely process
Make the highly homogeneously formation of powder bed 1 on path.
It is a feature of the present invention that when the height of basal part 2 or the height of powder bed 1 increase, make processing head 210 or powder
Last ejection section 212 rises, to reduce the amount of the powder P supplied to molten bath 3.
In order to which the height of basal part 2 or the height of powder bed 1 have been associated with the amount for the powder P for being supplied in molten bath 3 in real time
Come, the height of height or powder bed 1 to basal part 2 is detected and high in the height of the height of basal part 2 or powder bed 1
Position H2 directly rises processing head 210 or powderject portion 212, to reduce the amount of the powder P supplied to molten bath 3.
Powder P is exposed to form molten bath 3 by the central portion of processing head 210 with reference to Fig. 7, laser beam L, powder P exists
It tilts and sprays towards molten bath 3 around laser beam L, to form powder bed 1 on basal part 2.
As shown in Fig. 7 (a), in the normal position H1 of the height of powder bed 1, the focus LF of laser beam and powderject portion
The convergent powder convergence point PC of powder P of 112 injections converge in molten bath 3.In this state, the powder P's supplied to molten bath 3
It measures relatively more.
As shown in Fig. 7 (b), in the high position H2 of the height of powder bed 1, processing head 210 or powderject portion 212 rise,
To which the convergent powder convergence point PC of powder P are located at the position higher than the surface in molten bath 3.In this state, it is supplied to molten bath 3
Powder P amount it is relatively smaller.
To which the position by adjusting powder convergence point PC makes supply extremely in the normal position H1 of the height of powder bed 1
The amount of the powder P in molten bath 3 is relatively more, and the position H2 high in the height of powder bed 1, makes supply to the amount phase of the powder P in molten bath 3
To few, to make the height of the powder bed 1 formed along machining path integrally remain uniform.
It later, certainly also can be by making processing head 210 if the height of basal part 2 or the height of powder bed 1 are reduced again
Or powderject portion 212 declines to increase the amount for the powder P for being supplied in molten bath 3.
The processing head 210 of the present embodiment also can as shown in Figures 4 and 5 as constitute, detailed description will be omitted.
Show that the focus LF using laser beam is configured and focused on the laser beam L in molten bath 3 in Fig. 3, Fig. 4, Fig. 5 and Fig. 7
Example, but the laser beam L for irradiating molten bath 3 can be shone with a kind of state in the state of focusing or the state defocused
It penetrates.
The 3D shape manufacture powder feeding devices of the present invention formed as described above, by reception for pulverized powder
The movement speed of processing head or the altitude information of powder bed control supply to the amount of the powder in molten bath, to can be uniform
Ground forms the surface of powder bed, and can improve the effect of the dimensional accuracy of final product obtained.
In addition, with powder feeding device can only to adjust powder convergent for the 3D shapes manufacture for constituting the present invention as described above
The height of powder convergence point just controls supply to the amount of the powder in molten bath, so with the effect for capableing of real-time control powder layer height
Fruit.
The range of the claims in the present invention is not limited by above-described embodiment and variation, in appended claims model
It can be embodied with the embodiment of various forms in enclosing.The case where not departing from the purport of the claimed present invention of claims
Under, the various modifications that those skilled in the art are carried out belong in the scope of the claims of the present invention.
Claims (8)
1. a kind of 3D shapes manufacture powder feeding device, which is characterized in that including：
Processing head has laser irradiating part and powderject portion, and the laser irradiating part is for irradiating laser beam, to melt supply
Powder in molten bath, the powderject portion are arranged in the outside of the laser irradiating part, to be supplied to the molten bath for spraying
The powder given；
Speed detecting portion detects the movement speed of the processing head along machining path；
Control unit receives the movement speed data of the processing head from the speed detecting portion, when the mobile speed of the processing head
When degree reduces, the processing head or the powderject portion is made to increase, to reduce the amount of the powder supplied to the molten bath.
2. 3D shapes manufacture powder feeding device according to claim 1, which is characterized in that
The laser beam exposes to the powder to form the molten bath by the central portion of the processing head, and the powder exists
It tilts and sprays towards the molten bath around the laser beam,
When to reduce amount of the supply to the powder in the molten bath, the convergent powder convergence point of the powder is set to be located at more molten than described
The high position in the surface in pond.
3. 3D shapes manufacture powder feeding device according to claim 1, which is characterized in that
The laser irradiating part and the powderject portion are configured to make a relative move in the up-down direction,
When the movement speed of the processing head reduces, the control unit makes the relatively described laser irradiating part in the powderject portion
Rise, to reduce supply to the amount of the powder in the molten bath.
4. 3D shapes manufacture powder feeding device according to claim 1, which is characterized in that
The laser irradiating part and the powderject portion are integrally formed,
When the movement speed of the processing head reduces, the control unit makes the laser irradiating part and the powderject portion one
Supply is reduced to the amount of the powder in the molten bath with rising.
5. a kind of 3D shapes manufacture powder feeding device, which is characterized in that including：
Processing head has laser irradiating part and powderject portion, and the laser irradiating part is for irradiating laser beam, to melt supply
Powder in molten bath, the powderject portion are arranged in the outside of the laser irradiating part, to be supplied to the molten bath for spraying
The powder given,
Height detection portion is formed by the height of powder bed along the height or the powder deposition of machining path detection basal part
Degree,
Control unit receives the height of the basal part or the altitude information of the powder bed from the height detection portion, when described
When the height of basal part or the height of the powder bed increase, the processing head or the powderject portion is set to increase, to reduce
It supplies to the amount of the powder in the molten bath.
6. 3D shapes manufacture powder feeding device according to claim 5, which is characterized in that
The laser beam exposes to the powder to form the molten bath by the central portion of the processing head, and the powder exists
It tilts and sprays towards the molten bath around the laser beam,
When to reduce amount of the supply to the powder in the molten bath, the convergent powder convergence point of the powder is set to be located at more molten than described
The high position in the surface in pond.
7. 3D shapes manufacture powder feeding device according to claim 5, which is characterized in that
The laser irradiating part and the powderject portion are configured to make a relative move in the up-down direction,
When the height of the basal part or the height of the powder bed increase, the control unit keeps the powderject portion opposite
The laser irradiating part rises, to reduce supply to the amount of the powder in the molten bath.
8. 3D shapes manufacture powder feeding device according to claim 5, which is characterized in that
The laser irradiating part and the powderject portion are integrally formed,
When the height of the basal part or the height of the powder bed increase, the control unit makes the laser irradiating part and institute
Powderject portion is stated to rise together to reduce supply to the amount of the powder in the molten bath.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2017-0049594 | 2017-04-18 | ||
| KR1020170049594A KR101966954B1 (en) | 2017-04-18 | 2017-04-18 | Apparatus for supplying powder for manufacturing three dimensional shapes |
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| Publication Number | Publication Date |
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| CN108723364A true CN108723364A (en) | 2018-11-02 |
| CN108723364B CN108723364B (en) | 2021-06-15 |
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| CN201810199505.3A Active CN108723364B (en) | 2017-04-18 | 2018-03-12 | Powder supply device for 3D shape manufacturing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20240116112A1 (en) * | 2019-10-28 | 2024-04-11 | Insstek, Inc. | Laser shaping device |
| KR102377408B1 (en) * | 2019-10-28 | 2022-03-22 | 주식회사 인스텍 | Laser forming device |
| EP4186616A4 (en) * | 2020-07-22 | 2024-05-01 | Nikon Corp | Processing system |
| KR102435489B1 (en) * | 2021-05-13 | 2022-08-25 | 한국생산기술연구원 | Machine learning based directed energy deposition process status determination monitoring device and its control method |
| DE102021132139A1 (en) * | 2021-12-07 | 2023-06-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Method of making a porous sheet or body |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101342640A (en) * | 2007-07-11 | 2009-01-14 | 中国科学院沈阳自动化研究所 | Coaxial powder feeding system for quickly molding and producing functional gradient material with laser |
| CN101590571A (en) * | 2009-05-22 | 2009-12-02 | 西安交通大学 | Metal laser direct-forming experimental technique based on self-healing mechanism |
| CN101694582A (en) * | 2001-11-17 | 2010-04-14 | 株式会社Insstek | Method and system for monitoring and controlling deposition height in real time |
| CN106029264A (en) * | 2014-03-18 | 2016-10-12 | 株式会社东芝 | Nozzle and lamination molding apparatus |
| CN106061716A (en) * | 2014-03-18 | 2016-10-26 | 株式会社东芝 | Nozzle, additive layer manufacturing apparatus, and method for manufacturing additive layer manufacturing product |
| CN106061668A (en) * | 2014-03-18 | 2016-10-26 | 株式会社东芝 | Nozzle device, laminate shaping apparatus, and manufacturing method for laminated shaped product |
| CN106163774A (en) * | 2014-03-31 | 2016-11-23 | 三菱重工业株式会社 | Three-dimensional laminated device and three-dimensional laminated method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160041871A (en) | 2016-03-28 | 2016-04-18 | 참엔지니어링(주) | Apparatus and Method for drying or sintering material |
-
2017
- 2017-04-18 KR KR1020170049594A patent/KR101966954B1/en active IP Right Grant
-
2018
- 2018-03-12 CN CN201810199505.3A patent/CN108723364B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694582A (en) * | 2001-11-17 | 2010-04-14 | 株式会社Insstek | Method and system for monitoring and controlling deposition height in real time |
| CN101342640A (en) * | 2007-07-11 | 2009-01-14 | 中国科学院沈阳自动化研究所 | Coaxial powder feeding system for quickly molding and producing functional gradient material with laser |
| CN101590571A (en) * | 2009-05-22 | 2009-12-02 | 西安交通大学 | Metal laser direct-forming experimental technique based on self-healing mechanism |
| CN106029264A (en) * | 2014-03-18 | 2016-10-12 | 株式会社东芝 | Nozzle and lamination molding apparatus |
| CN106061716A (en) * | 2014-03-18 | 2016-10-26 | 株式会社东芝 | Nozzle, additive layer manufacturing apparatus, and method for manufacturing additive layer manufacturing product |
| CN106061668A (en) * | 2014-03-18 | 2016-10-26 | 株式会社东芝 | Nozzle device, laminate shaping apparatus, and manufacturing method for laminated shaped product |
| CN106163774A (en) * | 2014-03-31 | 2016-11-23 | 三菱重工业株式会社 | Three-dimensional laminated device and three-dimensional laminated method |
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| KR20180117235A (en) | 2018-10-29 |
| KR101966954B1 (en) | 2019-04-09 |
| CN108723364B (en) | 2021-06-15 |
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