CN106424730B - A kind of powder centrifugation supply of 3D printing, vibration ramming device and method - Google Patents
A kind of powder centrifugation supply of 3D printing, vibration ramming device and method Download PDFInfo
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- CN106424730B CN106424730B CN201610940467.3A CN201610940467A CN106424730B CN 106424730 B CN106424730 B CN 106424730B CN 201610940467 A CN201610940467 A CN 201610940467A CN 106424730 B CN106424730 B CN 106424730B
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- 239000000843 powder Substances 0.000 title claims abstract description 243
- 238000005119 centrifugation Methods 0.000 title claims abstract description 50
- 238000010146 3D printing Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000000227 grinding Methods 0.000 claims abstract description 58
- 238000007493 shaping process Methods 0.000 claims abstract description 17
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 238000007596 consolidation process Methods 0.000 claims abstract description 14
- 230000033001 locomotion Effects 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims description 23
- 238000011084 recovery Methods 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 238000010894 electron beam technology Methods 0.000 claims description 9
- 238000007639 printing Methods 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 6
- 235000012054 meals Nutrition 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 abstract description 3
- 230000003746 surface roughness Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 229910002114 biscuit porcelain Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 239000000686 essence Substances 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B22F12/10—Auxiliary heating means
- B22F12/13—Auxiliary heating means to preheat the material
-
- 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
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- 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
- B22F10/37—Process control of powder bed aspects, e.g. density
-
- 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
-
- 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
- B22F12/60—Planarisation devices; Compression devices
-
- 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
- B22F3/004—Filling molds with powder
-
- 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
- B22F3/02—Compacting only
- B22F3/093—Compacting only using vibrations or friction
-
- 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
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Coating Apparatus (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of powder of 3D printing centrifugation supply, vibration ramming device and method；Including the centrifugation Powder spreader, the machine supplying powder structure for centrifugation Powder spreader conveying powder, the liftable three-dimensional vibrating shaped platform for being arranged on lower section in powdering workbench being arranged in forming room；Centrifugation Powder spreader is in integrally rotatable and can be in the tubular structure of the Workpiece shaping overlying regions planar movement of three-dimensional vibrating shaped platform, its upper and lower both ends open gradually expands, upper end open is powder receiving port, lower ending opening is powder mouth, powder mouth is provided with screen cloth, for the powder paving of reception to be spilt to the Workpiece shaping region of three-dimensional vibrating shaped platform.The present apparatus and method can realize uniform, the uniformity of powdering process, spread between powder particle and particle more consolidation, improve the consistency and surface roughness of molding part.
Description
Technical field
The present invention relates to powder centrifugation supply, the vibration ramming dress of 3D printing apparatus field, more particularly to a kind of 3D printing
Put and method.
Background technology
3D printing technique is one kind of Fast Forming Technique, be directly according to the three-dimensional entity model data of product,
After computer is handled, three-dimensional entity model is converted into the superposition of many areal models, finally controlled by computer by product
Successively print.Especially with electron beam, the electron beam that the fusing of metal dust in layer is generated to fine and close part melts
Melting (EBM) technology has the advantages that capacity usage ratio is high, process velocity is fast, operating cost is low, high vacuum protection, it has also become Gao Xing
The preferable Rapid Manufacturing Technology of the complicated metallic sintered products of energy.One of key index of electron beam melting (EBM) technology is exactly fine and close
Degree, and the combination degree of packing between the degree of packing, uniformity and each powdering layer during powdering between powder particle is for most
The consistency of finished product produces vital influence.
Powdering structure is excessively single in existing EBM equipment, drives powder to be paved with work by the linear motion of scraper plate merely
Substrate.But for powder, the power of only horizontal plane makes it be covered with working substrate, causes powder without the power of vertical direction
Spacing between particle and powder particle reduces, that is, improves the degree of packing between powder particle.And for each powdering layer, it is existing
Only using scraper plate powdering method can not in the vertical direction promote combination more consolidation between powdering layer and powdering layer.And
The simple conventional method for using scraper plate, due to the selection of scraper plate material and the design of profile, can not ensure on working substrate
The uniformity and uniformity of spread metal powder granulates.
The content of the invention
The shortcomings that it is an object of the invention to overcome above-mentioned prior art and deficiency, there is provided a kind of powder centrifugation of 3D printing
Supply, vibration ramming device and method.
The present invention is achieved through the following technical solutions：
A kind of powder of 3D printing centrifuges supply, vibration ramming device, including forming room and set within it for constituency
Melt electron beam generator, powdering workbench 6 and its powdering mechanism of powder；The powder centrifugation supply, vibration ramming device
Including：The centrifugation Powder spreader 3 that is arranged in forming room, for centrifugation Powder spreader 3 convey the machine supplying powder structure of powder, be arranged on powdering work
Make the liftable three-dimensional vibrating shaped platform 7 of lower section in platform 6；
The machine supplying powder structure includes storage powder room 1, is arranged on the powder feeding band 2 of the lower section of 1 meal outlet of storage powder room 103；Powder feeding band 2 is used
Powder spreader 3 is centrifuged in the powder stored up in powder room 1 is delivered to；Storage powder room 1 does not set bottom plate.
The entirety of centrifugation Powder spreader 3 is in rotatable and can be in the Workpiece shaping overlying regions of three-dimensional vibrating shaped platform 7
The tubular structure of planar movement, its upper and lower both ends open gradually expand, and upper end open is powder receiving port 301, and lower ending opening is
Powder mouth 303, powder mouth 303 are provided with screen cloth 304, for the powder paving of reception to be spilt to the work of three-dimensional vibrating shaped platform 7
Part forming area.
The outer surface of the powder feeding band 2 is intervally distributed with the powder feeding baffle plate 202 for collecting powder, and powder feeding band 2 is by two
Driving wheel 203 drives；
When the powder that powder feeding baffle plate 202 carries is transported to the port of export of powder feeding band 2, powder drops under gravity
Powder spreader 3 is centrifuged, in the rotary centrifugal force effect of centrifugation Powder spreader 3, powder is sprinkled upon three-dimensional vibrating shaped platform by the paving of screen cloth 304
7 Workpiece shaping region, powder consolidation, then the rigidity by powdering mechanism are made under the effect of vibration of three-dimensional vibrating shaped platform 7
Powdering brush 5 is scraped the powder after consolidation by required thickness smooth.
The rotary power of the centrifugation Powder spreader 3, come from and driven with middle cylinder 302 by the gear of meshed transmission gear
Motivation structure 305.
The three-dimensional vibrating shaped platform 7 includes working substrate 701, bottom plate 705 and eccentric vibrating motor 704；Work base
Fixed between plate 701 and bottom plate 705 by support bar；
The eccentric vibrating motor 704 is divided to for two groups, every group two, and is separately fixed at the lower section of working substrate 701, and this two
The axis direction of the rotating shaft of group eccentric vibrating motor 704 is mutually perpendicular to；When eccentric vibrating motor 704 rotates, working substrate is driven
701 vibration on space three-dimensional direction, and then powder consolidation is made by vibration.
The working substrate 701 is provided with cushion pad by two pieces of sandwiches formed substantially at the edge of sandwich
702；Rubber blanket 703 is had additional in the middle part of the support bar；The bottom plate 705 is fixed on lifting platform 8, is driven by lifting platform 8
Three-dimensional vibrating shaped platform 7 moves up and down.
The rigid powdering brush 5 is on line slideway 4, and line slideway 4 is arranged on forming room's madial wall, by powdering machine
Structure drives its linear reciprocating motion.
The lower section at the both ends of powdering workbench 6, it is respectively equipped with a Powder Recovery room 11 for carrying Powder Recovery pipe 10, powder
Powder Recovery mouth 9 on the top connection powdering workbench 6 of last recovery tube 10；Powder Recovery room 11 is used to reclaim rigid powdering brush
Remaining powder during 5 powdering operation.
The powder mouth 303 of the screen cloth 304 and centrifugation Powder spreader 3 is detachable connection.
The inwall of the storage powder room 1 is provided with the electric heater 102 for being used for being heated to powder.
A kind of powder centrifugation supply of 3D printing, the operation method of vibration ramming device, comprise the following steps：
Step 1：Start the electric heater 102 in storage powder room 1, powder is heated；
Step 2：When powdering operation starts, driving wheel 203 drives powder feeding band 2 to run；By the rotating speed of driving wheel 203 with
Control single powder sending quantity；
Step 3：When the powder that powder feeding baffle plate 202 carries is transported to the port of export of powder feeding band 2, powder feeding baffle plate 202 is down
Tilt, until powder drops to centrifugation Powder spreader 3 under gravity；
Step 4：Centrifugation Powder spreader 3 rotary centrifugal force effect under, powder by screen cloth 304 paving be sprinkled upon three-dimensional vibrating into
The Workpiece shaping region of type platform 7；At the same time, two groups of eccentric vibrating motors 704 of three-dimensional vibrating shaped platform 7 start to turn
It is dynamic, because the axis direction of this two groups of rotating shafts of eccentric vibrating motor 704 is mutually perpendicular to, when they are rotated simultaneously, in eccentric wheel
In the presence of, working substrate 701 is vibrated on space three-dimensional direction, powder consolidation is made by vibration；Subsequent powdering mechanism drives
Rigid powdering brush 5 on dynamic line slideway 4 enters from one end horizontal movement of powdering workbench 6 to the other end of powdering workbench 6
And the powder after vibration ramming is scraped by required thickness smooth, powder is once scraped in completion；Then electronics is occurred by electron beam generator
Beam realizes fusing to powder in the Workpiece shaping region of working substrate 701, according to the planar structure of cuing open of processing part, completes one
The printing of individual machined layer；
Step 5：After the printing for completing a machined layer, lifting platform 8 drives three-dimensional vibrating shaped platform 7 to decline a powder
Thickness degree, then continue to repeat step four；So circulation, until completing the printing of all machined layers.
The present invention is had the following advantages and effect relative to prior art：
The present invention is combined using powder feeding band with storage powder room, is effectively improved powder feeding and production efficiency；Sent by adjustment
The spacing of powder baffle plate, can adjust unit powder sending quantity, by control driving wheel rotating speed can indirect control single powder sending quantity, operation letter
It is single, easy to automate.
The present invention using centrifugation Powder spreader 3 by centrifugal principle powder, its integrally in it is rotatable and can three-dimensional vibrating into
The tubular structure of the Workpiece shaping overlying regions planar movement of type platform, its upper and lower both ends open gradually expand, and upper end open is
Powder receiving port, lower ending opening are powder mouth, and powder mouth is provided with screen cloth, for by the powder of reception paving spill to three-dimensional vibrating into
The Workpiece shaping region of type platform；This centrifugation powder mode, can be such that spread metal dust is more uniformly distributed, unanimously, improve into
The consistency and surface roughness of type part, it is simple in construction, it is easy to operate.
Present invention employs liftable three-dimensional vibrating shaped platform 7, solves existing moulding cylinder and is only capable of the single of lifting
Defect；Pass through the vibration of eccentric vibrating motor so that spacing reduces between falling the metal powder granulates on working substrate, carries significantly
The high powder consistency of powdering layer, and then substantially increase the precision, consistency and surface roughness of molding part.
Technical measure is simple and easy to do, while overcoming traditional powdering technique, by three-dimensional vibrating mode, significantly
Improve the combination degree of packing between the degree of packing between powder particle, uniformity and each bisque.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 is the structural representation that Fig. 1 centrifuges Powder spreader.
Fig. 3 is the structural representation of Fig. 1 three-dimensional vibrating shaped platforms.
Embodiment
The present invention is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Figures 1 to 3.The invention discloses a kind of powder of 3D printing centrifugation supply, vibration ramming device, including into
Type room and the electron beam generator, powdering workbench 6 and its powdering mechanism to set within it for selective melting powder；The powder
End centrifugation supply, vibration ramming device include：It is arranged on centrifugation Powder spreader 3 in forming room, conveys powder for centrifugation Powder spreader 3
Machine supplying powder structure, be arranged in powdering workbench 6 the liftable three-dimensional vibrating shaped platform 7 of lower section；
The machine supplying powder structure includes storage powder room 1, is arranged on the powder feeding band 2 of the lower section of 1 meal outlet of storage powder room 103；Powder feeding band 2 is used
Powder spreader 3 is centrifuged in the powder stored up in powder room 1 is delivered to；
The entirety of centrifugation Powder spreader 3 is in rotatable and can be in the Workpiece shaping overlying regions of three-dimensional vibrating shaped platform 7
The tubular structure of planar movement, its upper and lower both ends open gradually expand, and upper end open is powder receiving port 301, and lower ending opening is
Powder mouth 303, powder mouth 303 are provided with screen cloth 304, for the powder paving of reception to be spilt to the work of three-dimensional vibrating shaped platform 7
Part forming area.The mesh number of screen cloth 304 can determine according to the particle diameter of powder particle in practical application.
The outer surface of the powder feeding band 2 is intervally distributed with the powder feeding baffle plate 202 for collecting powder, and powder feeding band 2 is by two
Driving wheel 203 drives；
When the powder that powder feeding baffle plate 202 carries is transported to the port of export of powder feeding band 2, powder drops under gravity
Powder spreader 3 is centrifuged, in the rotary centrifugal force effect of centrifugation Powder spreader 3, powder is sprinkled upon three-dimensional vibrating shaped platform by the paving of screen cloth 304
7 Workpiece shaping region, powder consolidation, then the rigidity by powdering mechanism are made under the effect of vibration of three-dimensional vibrating shaped platform 7
Powdering brush 5 is scraped the powder after consolidation by required thickness smooth.
The rotary power of the centrifugation Powder spreader 3, come from and driven with middle cylinder 302 by the gear of meshed transmission gear
Motivation structure 305.
The three-dimensional vibrating shaped platform 7 includes working substrate 701, bottom plate 705 and eccentric vibrating motor 704；Work base
Fixed between plate 701 and bottom plate 705 by support bar；
The eccentric vibrating motor 704 is divided to for two groups, every group two, and is separately fixed at the lower section of working substrate 701, and this two
The axis direction of the rotating shaft of group eccentric vibrating motor 704 is mutually perpendicular to；Certainly, according to being actually needed, the eccentric vibrating motor 704
Number of units also can be accordingly adjusted.
When eccentric vibrating motor 704 rotates, vibration of the driving working substrate 701 on space three-dimensional direction, Jin Ertong
Cross vibration make powder consolidation, uniformly, substantially increase the consistency of the machining accuracy and product of final products in itself.
The working substrate 701 is provided with cushion pad by two pieces of sandwiches formed substantially at the edge of sandwich
702；Rubber blanket 703 is had additional in the middle part of the support bar；The bottom plate 705 is fixed on lifting platform 8, is driven by lifting platform 8
Three-dimensional vibrating shaped platform 7 moves up and down.
The rigid powdering brush 5 is on line slideway 4, and line slideway 4 is arranged on forming room's madial wall, by powdering machine
Structure drives its linear reciprocating motion.
The lower section at the both ends of powdering workbench 6, it is respectively equipped with a Powder Recovery room 11 for carrying Powder Recovery pipe 10, powder
Powder Recovery mouth 9 on the top connection powdering workbench 6 of last recovery tube 10；Powder Recovery room 11 is used to reclaim rigid powdering brush
Remaining powder during 5 powdering operation.
The powder mouth 303 of the screen cloth 304 and centrifugation Powder spreader 3 is detachable connection.
The inwall of the storage powder room 1 is provided with the electric heater 102 for being used for being heated to powder.
The powder centrifugation supply of 3D printing of the present invention, the operation method of vibration ramming device, can be achieved by the steps of：
Step 1：Start the electric heater 102 in storage powder room 1, (metal) powder is heated；
Step 2：When powdering operation starts, driving wheel 203 drives powder feeding band 2 to run；By the rotating speed of driving wheel 203 with
Control single powder sending quantity；Due to the height just 103 seamless engagement of meal outlet with storage powder room 1 of powder feeding baffle plate 202, so can
To ensure that powder is not revealed during powder feeding.
Step 3：When the powder that powder feeding baffle plate 202 carries is transported to the port of export of powder feeding band 2, powder feeding baffle plate 202 is down
Tilt, until powder drops to centrifugation Powder spreader 3 under gravity；
Step 4：Centrifugation Powder spreader 3 rotary centrifugal force effect under, powder by screen cloth 304 paving be sprinkled upon three-dimensional vibrating into
The Workpiece shaping region of type platform 7；At the same time, two groups of eccentric vibrating motors 704 of three-dimensional vibrating shaped platform 7 start to turn
It is dynamic, because the axis direction of this two groups of rotating shafts of eccentric vibrating motor 704 is mutually perpendicular to, when they are rotated simultaneously, in eccentric wheel
In the presence of, working substrate 701 is vibrated on space three-dimensional direction, powder consolidation is made by vibration；Subsequent powdering mechanism drives
Rigid powdering brush 5 on dynamic line slideway 4 enters from one end horizontal movement of powdering workbench 6 to the other end of powdering workbench 6
And the powder after vibration ramming is scraped by required thickness smooth, powder is once scraped in completion；Then electronics is occurred by electron beam generator
Beam realizes fusing to powder in the Workpiece shaping region of working substrate 701, according to the planar structure of cuing open of processing part, completes one
The printing of individual machined layer；
Step 5：After the printing for completing a machined layer, lifting platform 8 drives three-dimensional vibrating shaped platform 7 to decline a powder
Thickness degree, then continue to repeat step four；So circulation, until completing the printing of all machined layers.
Lifting platform 8 can accurately control lifting by servomotor；Original state, height and the powdering work of working substrate 701
Make platform 6 to flush.
As described above, the present invention can be better realized.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, other any Spirit Essences without departing from the present invention
With made under principle change, modification, replacement, combine, simplification, should be equivalent substitute mode, be included in the present invention's
Within protection domain.
Claims (10)
- Melted 1. a kind of powder of 3D printing centrifuges supply, vibration ramming device, including forming room and set within it for constituency Change electron beam generator, powdering workbench (6) and its powdering mechanism of powder；It is characterized in that the powder centrifugation supplies, shaken Dynamic mold compacting device includes：It is arranged on the centrifugation Powder spreader (3) in forming room, the machine supplying powder for centrifugation Powder spreader (3) conveying powder Structure, the liftable three-dimensional vibrating shaped platform (7) for being arranged on lower section in powdering workbench (6)；The machine supplying powder structure includes storage powder room (1), the powder feeding band (2) being arranged on below storage powder room (1) meal outlet (103)；Powder feeding Band (2) is used to the powder stored up in powder room (1) being delivered to centrifugation Powder spreader (3)；The centrifugation Powder spreader (3) is in integrally rotatable and can be in the Workpiece shaping overlying regions of three-dimensional vibrating shaped platform (7) The tubular structure of planar movement, its upper and lower both ends open gradually expand, and upper end open is powder receiving port (301), lower ending opening For powder mouth (303), powder mouth (303) is provided with screen cloth (304), is put down for spilling to three-dimensional vibrating to be molded the powder paving of reception The Workpiece shaping region of platform (7).
- 2. the powder centrifugation supply of 3D printing according to claim 1, vibration ramming device, it is characterised in that the powder feeding band (2) outer surface is intervally distributed with the powder feeding baffle plate (202) for collecting powder, and powder feeding band (2) is driven by two driving wheels (203) It is dynamic；When the powder that powder feeding baffle plate (202) carries is transported to the port of export of powder feeding band (2), powder drops under gravity Centrifuge Powder spreader (3), centrifugation Powder spreader (3) rotary centrifugal force effect, powder by screen cloth (304) paving be sprinkled upon three-dimensional vibrating into The Workpiece shaping region of type platform (7), makes powder consolidation under the effect of vibration of three-dimensional vibrating shaped platform (7), then by powdering The rigid powdering brush (5) of mechanism is scraped the powder after consolidation by required thickness smooth.
- 3. the powder centrifugation supply of 3D printing according to claim 1, vibration ramming device, it is characterised in that the centrifugation paving The rotary power of powder device (3), come from the gear driven mechanism (305) for passing through meshed transmission gear with middle cylinder (302).
- 4. the powder centrifugation supply of 3D printing according to claim 1, vibration ramming device, it is characterised in that the three-dimensional is shaken Dynamic shaped platform (7) includes working substrate (701), bottom plate (705) and eccentric vibrating motor (704)；Working substrate (701) and bottom Plate is fixed between (705) by support bar；The eccentric vibrating motor (704) is divided into two groups, every group two, and is separately fixed at the lower section of working substrate (701), and this two The axis direction of group eccentric vibrating motor (704) rotating shaft is mutually perpendicular to；When eccentric vibrating motor (704) rotates, work is driven Vibration of the substrate (701) on space three-dimensional direction, and then powder consolidation is made by vibration.
- 5. the powder centrifugation supply of 3D printing according to claim 4, vibration ramming device, it is characterised in that the work base Plate (701) is provided with cushion pad (702) at the edge of sandwich by two pieces of sandwiches formed substantially；The support bar Middle part have additional rubber blanket (703)；The bottom plate (705) is fixed on lifting platform (8), is shaken by lifting platform (8) driving three-dimensional Dynamic shaped platform (7) moves up and down.
- 6. the powder centrifugation supply of 3D printing according to claim 2, vibration ramming device, it is characterised in that the rigidity paving (5) are painted on line slideway (4), line slideway (4) is arranged on forming room's madial wall, drives its reciprocal by powdering mechanism Linear motion.
- 7. the powder centrifugation supply of the 3D printing according to any one of claim 1 to 6, vibration ramming device, its feature exist In the lower section at powdering workbench (6) both ends, a Powder Recovery room (11) for carrying Powder Recovery pipe (10), powder are respectively equipped with Powder Recovery mouth (9) on the top connection powdering workbench (6) of last recovery tube (10)；Powder Recovery room (11) is used to reclaim just Remaining powder during property powdering brush (5) powdering operation.
- 8. the powder centrifugation supply of 3D printing according to claim 7, vibration ramming device, it is characterised in that the screen cloth (304) the powder mouth (303) with centrifugation Powder spreader (3) is detachable connection.
- 9. the powder centrifugation supply of 3D printing according to claim 7, vibration ramming device, it is characterised in that the storage powder room (1) inwall is provided with the electric heater (102) for being used for being heated to powder.
- 10. the powder centrifugation supply of 3D printing any one of claim 1 to 9, the operation method of vibration ramming device, its It is characterised by comprising the following steps：Step 1：Start the electric heater (102) in storage powder room (1), powder is heated；Step 2：When powdering operation starts, driving wheel (203) driving powder feeding band (2) operation；Pass through the rotating speed of driving wheel (203) To control single powder sending quantity；Step 3：When the powder that powder feeding baffle plate (202) carries is transported to the port of export of powder feeding band (2), powder feeding baffle plate (202) is past Lower inclination, until powder drops to centrifugation Powder spreader (3) under gravity；Step 4：Centrifugation Powder spreader (3) rotary centrifugal force effect under, powder by screen cloth (304) paving be sprinkled upon three-dimensional vibrating into The Workpiece shaping region of type platform (7)；At the same time, two groups of eccentric vibrating motors (704) of three-dimensional vibrating shaped platform (7) are opened Begin to rotate, because the axis direction of this two groups of eccentric vibrating motor (704) rotating shafts is mutually perpendicular to, when they are rotated simultaneously, In the presence of eccentric wheel, working substrate (701) is vibrated on space three-dimensional direction, powder consolidation is made by vibration；Then paving Rigid powdering brush (5) on powder mechanism driving line slideway (4) works from one end horizontal movement of powdering workbench (6) to powdering The other end of platform (6), and then the powder after vibration ramming scraped by required thickness smooth, powder is once scraped in completion；Then by electronics Electron beam occurs for beam generator in the Workpiece shaping region of working substrate (701), is realized according to the planar structure of cuing open of processing part Fusing to powder, complete the printing of a machined layer；Step 5：After the printing for completing a machined layer, lifting platform (8) driving three-dimensional vibrating shaped platform (7) declines a powder Thickness degree, then continue to repeat step four；So circulation, until completing the printing of all machined layers.
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