CN109202078A - A kind of compacting of SLM powder bed and power spreading device - Google Patents
A kind of compacting of SLM powder bed and power spreading device Download PDFInfo
- Publication number
- CN109202078A CN109202078A CN201811117781.7A CN201811117781A CN109202078A CN 109202078 A CN109202078 A CN 109202078A CN 201811117781 A CN201811117781 A CN 201811117781A CN 109202078 A CN109202078 A CN 109202078A
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- compacting
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- workbench
- feeding cylinder
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- 239000000843 powder Substances 0.000 title claims abstract description 147
- 238000003892 spreading Methods 0.000 title claims abstract description 27
- 230000007480 spreading Effects 0.000 title claims abstract description 27
- 238000000227 grinding Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000010985 leather Substances 0.000 claims description 27
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005056 compaction Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 229910002114 biscuit porcelain Inorganic materials 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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
-
- 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
- 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
-
- 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
- B22F12/224—Driving means for motion along a direction within the plane of a layer
-
- 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
- B22F12/67—Blades
-
- 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
- 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
- B22F10/70—Recycling
- B22F10/73—Recycling of powder
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Disintegrating Or Milling (AREA)
- Road Paving Machines (AREA)
Abstract
The present invention discloses a kind of compacting of SLM powder bed and power spreading device；Belong to increases material manufacturing technology field.Including workbench, forming board, powder falling mouth, machine driving module, powdering module, compacting module and powder feeding cylinder outer wall；The machine driving module, powdering module, compacting module are respectively positioned on above workbench；Workbench middle position is provided with forming board；Workbench front end is provided with powder falling mouth；Lower end, compacting module lower section are provided with powder feeding cylinder outer wall on rear side of workbench；Machine driving module, powdering module and compacting module cooperative work.The present invention designs two different pressure head structures and is applicable in different dress powder flow paths；Increase the degree of packing and consistency between powder；Improve powder bed density；Guarantee formed precision and mechanical property；The inclined surface of scraper lower end makes powder particle be squeezed and spread on forming board under the impetus of synchronous tape transport；Powdering process is more uniform steady；Powdering effect significantly improves.
Description
Technical field
The present invention relates to a kind of compacting of SLM powder bed and power spreading devices；Belong to increases material manufacturing technology field.
Background technique
Increases material manufacturing technology subtracts material and deformation forming technique different from traditional；It can be made rapidly under conditions of no mold
Produce the Three-dimensional Entity Components of arbitrarily complicated shape；It is widely used to the fields such as space flight, biomedicine.Selective laser melting
The one kind of technology (Selective Laser Melting, SLM) as increases material manufacturing technology；Using laser beam as heat source pair
Single layer powder carries out selectively heating fusing；It is to be bonded in single layer with the powder granule of interlayer；It finally can Quick-forming
The 3D solid of complicated shape out；Formed precision is high；Consistency is almost up to 100%；Performance is more than traditional casting.SLM processing zero
During part；The quality of powdering quality directly affects formed precision and consistency.Metal powder used in SLM is installed in powder feeding cylinder
In；Forming board surface is laid in a micron-sized thickness under the action of powder supply mechanism；It melts under the effect of the laser
Solidification.Point contact state is presented between spherical powder particle；Make between particle and particle that there are stomatas；Hold during powdering
Easily reduce powder bed density；This loose characteristic will lead to formed precision variation；Consistency reduces.In addition；Existing powdering dress
It sets generally using roller or colloid scraping article；Roller easily rolls powder carrying in rolling pressed powder process；Cause powdering uneven；
And colloid scraping article is prone to wear；Scratch is generated during subsequent powdering；Reduce powdering effect.
Summary of the invention
The present invention is in view of the problems of the existing technology；A kind of compacting of SLM powder bed and power spreading device are provided；The device uses
Two kinds of pressure head structures；It is acted in conjunction with the secondary compaction of scraper；Significantly improve the consistency of powder bed；Improve part formed precision and
Mechanical property.Described device includes workbench 1, forming board 4, powder falling mouth 5, machine driving module, powdering module, compacting mould
Block and powder feeding cylinder outer wall 33；The machine driving module, powdering module, compacting module are respectively positioned on 1 top of workbench；Work is flat
1 middle position of platform is provided with forming board 4；1 front end of workbench is provided with powder falling mouth 5；1 rear side lower end of workbench, compacting
Powder feeding cylinder outer wall 33 is provided with below module；Machine driving module, powdering module and compacting module cooperative work；
The machine driving module includes left rail 2, right guide rail 3, axis I 6, left belt wheel 7, axis II 8, right belt wheel 9, driving motor I
21, driving lever 22, shaft coupling 23, follower lever 24, driven pulley 25, left leather belt 26, right leather belt 27, drive pulley 28, solid
Determine block 30, right sliding block 31, left slider 32；Left rail 2, right guide rail 3 are symmetrically fixed in the left and right sidewall of workbench 1；Left cunning
Block 32 slides on left rail 2；Right sliding block 31 slides on right guide rail 3；Pass through fixed block between left slider 32 and left leather belt 26
30 are fixedly connected；It is fixedly connected between right sliding block 31 and right leather belt 27 by fixed block 30；26 front end of left leather belt bypasses left belt wheel
7；Rear end bypasses driven pulley 25；7 sets of left belt wheel is on axis I 6；Axis I 6 is fixed on left rail 2；Driven pulley 25 is fixed
On follower lever 24；27 front end of right leather belt bypasses right belt wheel 9；Rear end bypasses drive pulley 28；9 sets of right belt wheel on axis II 8；
Axis II 8 is fixed on right guide rail 3；Drive pulley 28 is fixed on driving lever 22；One end of driving lever 22 by shaft coupling 23 with
Follower lever 24 connects；The other end of driving lever 22 is connect with the output end of driving motor I 21；
The powdering module include scraper 10, connecting rod 11, adjustment gear 12, rack gear 13, connector 14, crossbeam 15, cross bar 16,
Card slot 17, rotary head 18, shaft 19, nut 20；The both ends of crossbeam 15 are connect with right sliding block 31,32 side of left slider respectively；Crossbeam
A connector 14 is respectively set in 15 left and right ends；14 lower end of connector is connect with rack gear 13；The inside of two toothed racks 13 is respectively set
Set an adjustment gear 12；Rack gear 13 and adjustment gear 12 are intermeshed；Card slot 17 is set in the middle part of adjustment gear 12；Shaft 19
The structure matched with 17 shape of card slot is set on excircle and is inserted into card slot 17；19 one end of shaft is connect with rotary head 18；Separately
One end sequentially passes through gear 12, connecting rod 11, cross bar 16；And connecting rod 11, crossbeam 16, gear 12 are fixed on one by nut 20
It rises；11 lower end of connecting rod is connect with scraper 10；Scraper 10 is set to 1 top of workbench；
Compacting module include sliding rail 29, powder feeding cylinder 34, dress powder space 35, wheel 36, connecting shaft 37, driving motor II 38, connecting rod 39,
Upper flange plate 40, lower flange 41, electrohydraulic cylinder 42, telescopic rod 43, pressure head I 44 and pressure head II 45；It is set outside powder feeding cylinder 34
There is powder feeding cylinder outer wall 33；During powder feeding cylinder 34 moves downward；It is dress powder space 35 with the height of workbench 1 apart；Powder feeding
The surface of cylinder 34 is equipped with sliding rail 29；2 wheels 36 are placed in sliding rail 29；It can be slided along sliding rail 29；37 one end of connecting shaft passes through two
A wheel 36；The side wall that the other end passes through sliding rail 29 is connect with driving motor II 38；39 upper end of connecting rod passes through sliding rail 29 and connecting shaft
37 connections；Lower end is connect with upper flange plate 40；Upper flange plate 40 and lower flange 41 are by being bolted fixation；Under lower flange 41
End is connect by electrohydraulic cylinder 42 with telescopic rod 43；43 lower end of telescopic rod is equipped with pressure head I 44 or pressure head II 45.
Preferably；Left rail 2 of the present invention, right guide rail 3 are fixed in left and right sidewall by sunk screw；Forming board
4 are connect by sunk screw with the driving bottom plate of 1 lower end of workbench.
Preferably；10 side of scraper of the present invention is symmetrical arranged two threaded holes 101；Fastening screw passes through threaded hole
Scraper 10 is fixed on 11 bottom end of connecting rod by 101；10 lower end of scraper opens up inclined surface；It is in 22o with horizontal direction；At inclined surface bottom
End setting rounded corner 102；The material of scraper 10 is stainless steel material.
Preferably；Crossbeam 15 of the present invention is fixed on connector 14 by fastening screw.
Preferably；Left leather belt 26 and right leather belt 27 of the present invention are fixed on fixed block 30 by attachment screw；It is fixed
Block 30 is L " shape foot iron construction.
Preferably；Sliding rail 29 of the present invention is fixed on the top opposite with workbench 1 by sunk screw；In sliding rail 29
Between be upper raised 291, both ends are lower concave volume 292；Wheel 36 is moved along lower concave volume 292；It is provided with out on upper raised 291 top
Mouth 293；39 upper end of connecting rod passes through opening 293 and connect with connecting shaft 37.
Preferably；Driving motor I 21 of the present invention, driving motor II 38, electrohydraulic cylinder 42 pass through conducting wire and external
Power supply connection；And it is controlled and is moved by external PLC controller.
Preferably；Pressure head I 44 of the present invention is strip rectangle structure；The length and width in its section is less than powder feeding cylinder 34
Width；It is correspondingly provided with a telescopic rod 43.
Preferably；The shape of pressure head II 45 of the present invention is similar to the shape of powder feeding cylinder 34；Its cross-sectional length and width
Less than the size of powder feeding cylinder 34；It is correspondingly provided with 3 telescopic rods 43.
Preferably；It drives to shrink to get up to be located at by telescopic rod 43 when pressure head I 44 of the present invention, pressure head II 45 do not work and slide
29 lower section of rail.
Beneficial effects of the present invention:
(1) present invention uses two different pressure head structures；Different dress powder flow paths is adapted to according to actual needs；Efficiency of compaction
It is high；Consolidation effect is good.When powder is full of powder feeding cylinder；Pressure head I protrudes between the powder in dress powder space；Pass through electrohydraulic cylinder
With the up and down motion of telescopic rod；And wheel moving along sliding rail；The constantly agitation powder of pressure head I；Make between powder particle
Gas overflowing；Increase the degree of packing of powder；And powder is further tamped in the top that powder feeding cylinder fills powder；Make loose powder
End becomes fine and close；Improve powder bed density.When using gradually adding powder mode into powder feeding cylinder plus powder；Often it is put into certain thickness powder
Layer；Pressure head II gives bisque pressure under the action of multiple groups electrohydraulic cylinder and telescopic rod；Make the degree of packing between powder particle
Increase；Keep powder finer and close by being successively compacted mode.
(2) when powder feeding cylinder sends out powder upwards；Scraper pushes powder to forming base under the drive of machine driving module
It is unfolded on plate；Since the bottom end of scraper opens up inclined surface；While powder is sprawled forward by thrust；Extruding by inclined surface
Power makes powder gap become smaller；Play the role of secondary compaction to powder bed；The compactness and mechanical property of part can be dramatically increased.
(3) scraper uses detachable turn adjustment structure；The cooperation of adjustment gear and rack gear can precisely adjust scraper
The distance between workbench；The powder layer thickness of guarantee demand；And powdering is more uniform；It can regular more sliding scraper；Save it
The economic cost of its components；The rounding corner structure of scraper lower end can be avoided scratch piece surface；Improve powdering effect.
(4) scraper powdering is driven using synchronous belt mechanical transmission structure；Powdering process is more steady, safe；Guarantee powder
The planarization that end is sprawled；Excessive powder material pushes in powder falling mouth and recycles and sieve；In case secondary use；Save dusty material
Cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of powder bed of the present invention compacting and power spreading device；
Fig. 2 is the rearview of powder bed of the present invention compacting and power spreading device；
Fig. 3 is the top view of powder bed of the present invention compacting and power spreading device；
Fig. 4 is the cross-sectional view of powder bed of the present invention compacting and power spreading device；
Fig. 5 is the powdering module diagram of powder bed of the present invention compacting and power spreading device；
Fig. 6 is the powdering module rearview of powder bed of the present invention compacting and power spreading device；
Fig. 7 is the scraper schematic of powder bed of the present invention compacting and power spreading device；
Fig. 8 is the compacting module diagram of powder bed of the present invention compacting and power spreading device；
Fig. 9 is the schematic diagram of powder bed of the present invention compacting and power spreading device；
Figure 10 is the compacting module diagram of powder bed of the present invention compacting and power spreading device
In figure: 1- workbench；2- left rail；The right guide rail of 3-；4- forming board；5- powder falling mouth；6- axis I；The left belt wheel of 7-；8- axis
Ⅱ；9- right belt wheel；10- scraper；101- screw hole；102- rounded corner；11- connecting rod；12- adjustment gear；13- rack gear；14- connection
Head；15- crossbeam；16- cross bar；17- card slot；18- rotary head；19- shaft；20- nut；21- driving motor I；22- driving lever；23-
Shaft coupling；24- follower lever；25- driven pulley；26- left leather belt；27- right leather belt；28- drive pulley；29- sliding rail；291-
Upper protrusion；Concave volume under 292-；293- opening；30- fixture；The right sliding block of 31-；32- left slider；33- powder feeding cylinder outer wall；34- powder feeding
Cylinder；35- fills powder space；36- wheel；37- connecting shaft；38- driving motor II；39- connecting rod；40- upper flange plate；41- lower flange；
42- electrohydraulic cylinder；43- telescopic rod；44- pressure head I；45- pressure head II.
Specific embodiment
With reference to embodiment；The invention will be further described.
Embodiment 1
A kind of compacting of SLM powder bed and power spreading device (as shown in Fig. 1 ~ 8), described device include workbench 1, forming board 4, fall
Powder mouth 5, machine driving module, powdering module, compacting module and powder feeding cylinder outer wall 33；The machine driving module, powdering module,
Compacting module is respectively positioned on 1 top of workbench；1 middle position of workbench is provided with forming board 4；1 front end of workbench is set
It is equipped with powder falling mouth 5；Powder feeding cylinder outer wall 33 is provided with below 1 rear side lower end of workbench, compacting module；Machine driving module, paving
Powder module and compacting module cooperative work；The machine driving module includes left rail 2, right guide rail 3, axis I 6, left belt wheel 7, axis
II 8, right belt wheel 9, driving motor I 21, driving lever 22, shaft coupling 23, follower lever 24, driven pulley 25, left leather belt 26, right skin
Band 27, drive pulley 28, fixed block 30, right sliding block 31, left slider 32；It is flat that left rail 2, right guide rail 3 are symmetrically fixed on work
In the left and right sidewall of platform 1；Left slider 32 slides on left rail 2；Right sliding block 31 slides on right guide rail 3；Left slider 32 and a left side
It is fixedly connected between belt 26 by fixed block 30；It is fixedly connected between right sliding block 31 and right leather belt 27 by fixed block 30；It is left
26 front end of belt bypasses left belt wheel 7；Rear end bypasses driven pulley 25；7 sets of left belt wheel is on axis I 6；Axis I 6 is fixed on left rail
On 2；Driven pulley 25 is fixed on follower lever 24；27 front end of right leather belt bypasses right belt wheel 9；Rear end bypasses drive pulley
28；9 sets of right belt wheel on axis II 8；Axis II 8 is fixed on right guide rail 3；Drive pulley 28 is fixed on driving lever 22；Driving lever
22 one end is connect by shaft coupling 23 with follower lever 24；The other end of driving lever 22 is connect with the output end of driving motor I 21；
The powdering module includes scraper 10, connecting rod 11, adjustment gear 12, rack gear 13, connector 14, crossbeam 15, cross bar 16, card slot
17, rotary head 18, shaft 19, nut 20；The both ends of crossbeam 15 are connect with right sliding block 31,32 side of left slider respectively；Crossbeam 15 is left
A connector 14 is respectively set in right both ends；14 lower end of connector is connect with rack gear 13；The inside of two toothed racks 13 is respectively arranged one
A adjustment gear 12；Rack gear 13 and adjustment gear 12 are intermeshed；Card slot 17 is set in the middle part of adjustment gear 12；19 outer circle of shaft
The structure matched with 17 shape of card slot is set on week and is inserted into card slot 17；19 one end of shaft is connect with rotary head 18；The other end
Sequentially pass through gear 12, connecting rod 11, cross bar 16；And connecting rod 11, crossbeam 16, gear 12 are fixed together by nut 20；
11 lower end of connecting rod is connect with scraper 10；Scraper 10 is set to 1 top of workbench；Being compacted module includes sliding rail 29, powder feeding cylinder
34, powder space 35, wheel 36, connecting shaft 37, driving motor II 38, connecting rod 39, upper flange plate 40, lower flange 41, electronic liquid are filled
Cylinder pressure 42, telescopic rod 43, pressure head I 44 and pressure head II 45；Powder feeding cylinder outer wall 33 is equipped with outside powder feeding cylinder 34；Powder feeding cylinder 34 is transported downwards
During dynamic；It is dress powder space 35 with the height of workbench 1 apart；The surface of powder feeding cylinder 34 is equipped with sliding rail 29；2 wheels
36 are placed in sliding rail 29；It can be slided along sliding rail 29；37 one end of connecting shaft passes through two wheels 36；The other end passes through the side wall of sliding rail 29
It is connect with driving motor II 38；39 upper end of connecting rod passes through sliding rail 29 and connect with connecting shaft 37；Lower end is connect with upper flange plate 40；Upper method
Blue disk 40 is with lower flange 41 by being bolted fixation；41 lower end of lower flange is connected by electrohydraulic cylinder 42 and telescopic rod 43
It connects；43 lower end of telescopic rod is equipped with pressure head I 44, and pressure head I 44 is strip rectangle structure；The length and width in its section is less than powder feeding cylinder
34 width；It is correspondingly provided with a telescopic rod 43；It drives to shrink to get up to be located at by telescopic rod 43 when the pressure head I 44 does not work and slide
29 lower section of rail.
Left rail 2 described in the present embodiment, right guide rail 3 are fixed in left and right sidewall by sunk screw；Forming board 4 is logical
Sunk screw is crossed to connect with the driving bottom plate of 1 lower end of workbench.
The side of scraper 10 described in the present embodiment is symmetrical arranged two threaded holes 101；Fastening screw will across threaded hole 101
Scraper 10 is fixed on 11 bottom end of connecting rod；10 lower end of scraper opens up inclined surface；It is in 22o with horizontal direction；It is set in inclined surface bottom end
Set rounded corner 102；The material of scraper 10 is stainless steel material.
The present embodiment middle cross beam 15 is fixed on connector 14 by fastening screw.
Left leather belt 26 and right leather belt 27 are fixed on fixed block 30 by attachment screw in the present embodiment；Fixed block 30 is L "
Shape foot iron construction.
Sliding rail 29 described in the present embodiment is fixed on the top opposite with workbench 1 by sunk screw；Among sliding rail 29
It is lower concave volume 292 for upper raised 291, both ends；Wheel 36 is moved along lower concave volume 292；Upper raised 291 top is provided with opening
293；39 upper end of connecting rod passes through opening 293 and connect with connecting shaft 37.
Embodiment 2
A kind of compacting of SLM powder bed and power spreading device, structure and embodiment 1 are identical, and difference is: 43 lower end of telescopic rod is equipped with pressure head
II 45, the shape of pressure head II 45 is similar to the shape of powder feeding cylinder 34；Its cross-sectional length and width are less than the size of powder feeding cylinder 34；It is right
3 telescopic rods 43 should be equipped with, is driven when pressure head II 45 does not work by telescopic rod 43 and shrinks positioned at 29 lower section of sliding rail.
Driving motor I 21 described in the present embodiment, driving motor II 38, electrohydraulic cylinder 42 pass through conducting wire and external power supply
Connection；And it is controlled and is moved by external PLC controller.
The course of work of the present embodiment described device: the screw hole 101 of scraper 10 and connecting rod 11 are connected by fastening screw
It connects；The levelness of scraper 10 is adjusted first；Rotation two rotary heads 18 in left and right；Shaft 19 drives adjustment gear 12 along 13 turns of rack gear
It is dynamic；Make the both ends horizontal of scraper 10；And it keeps at a distance from required powder thickness with workbench 1；Add in 19 rear end of shaft
Enter cross bar 16 and is locked with nut 20；Under the control of external PLC controller；Start driving motor I 21；Driving lever 22 is logical
Crossing shaft coupling 23 drives follower lever 24 to rotate；Follower lever 24 drives driven pulley 25 to rotate；26 one end of left leather belt is around driven
Belt pulley 25；The other end bypasses left belt wheel 7；And driving lever 22 drives drive pulley 28 to rotate；27 one end of right leather belt is around master
Dynamic belt pulley 28；The other end bypasses right belt wheel 9；26 lower section of left leather belt is fixed on left slider 32 by fixture 30；Under right leather belt 27
Side is fixed on right sliding block 31 by fixture 30；Driving motor I 21 rotates clockwise；Right sliding block 31 and left slider 32 are in right guide rail
3 and left rail 2 on move；Scraper 10 is set to be placed in 34 rear end of powder feeding cylinder by crossbeam 15.
When the powder of sufficient amount is added in dress powder space 35 inside powder feeding cylinder 34；Under the control of external PLC controller；
Start driving motor II 38, electrohydraulic cylinder 42；Driving motor II 38 drives wheel 36 to rotate by connecting shaft 37；Make 36 edge of wheel
Lower concave volume 292 in sliding rail 29 it is mobile；Connecting shaft 37 drives connecting rod 39 to move horizontally；Electrohydraulic cylinder 42 push telescopic rod 43 to
Lower movement；Protrude into pressure head I 44 in the powder inside powder feeding cylinder 34；It is moved by the lifting of telescopic rod 43 and the horizontal of connecting rod 39
It is dynamic；Pressure head I 44 stirs powder；Make the remaining gas overflowing between powder particle；Improve the degree of packing of powder；Finally in powder feeding
Pressure head I 44 is further used to tamp powder in the top that cylinder 34 fills powder.Under the promotion of powder feeding mechanism；Bisque is pushed upwardly
It is dynamic；It is higher by 1 certain distance of working face；Driving motor I 21 is along rotation counterclockwise；Scraper 10 is moved to 5 direction of powder falling mouth；Scraper
The powder released in 10 push powder feeding cylinders 34 tiles to 4 direction of forming board；Extra powder falls to fall after rise in powder mouth 5；Powder
Grain secondary compaction under the action of 10 lower end inclined surface of scraper；Improve powder bed consistency and processing performance.It is empty to dress powder when successively
Between 35 plus when powder；Often add certain thickness powder；3 electrohydraulic cylinders 42 work at the same time；Push the pressure of 43 lower end of telescopic rod
First II 45 move downward；Pressure head II 45 gives powder pressure；Play compacting effect；The compacting of powder bed scraper 10 during powdering
Become finer and close under effect；Mechanical property can be significantly improved.
Specific embodiments of the present invention are explained in detail above in conjunction with attached drawing；But the present invention is not limited to above-mentioned realities
Apply example；Within the knowledge of a person skilled in the art；It can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (10)
1. a kind of SLM powder bed compacting and power spreading device；It is characterized by comprising workbenches (1), forming board (4), powder falling mouth
(5), machine driving module, powdering module, compacting module and powder feeding cylinder outer wall (33)；The machine driving module, powdering module,
Compacting module is respectively positioned on above workbench (1)；Workbench (1) middle position is provided with forming board (4)；Workbench
(1) front end is provided with powder falling mouth (5)；Lower end, compacting module lower section are provided with powder feeding cylinder outer wall (33) on rear side of workbench (1)；
Machine driving module, powdering module and compacting module cooperative work；
The machine driving module includes left rail (2), right guide rail (3), axis I (6), left belt wheel (7), axis II (8), right belt wheel
(9), driving motor I (21), driving lever (22), shaft coupling (23), follower lever (24), driven pulley (25), left leather belt (26),
Right leather belt (27), drive pulley (28), fixed block (30), right sliding block (31), left slider (32)；Left rail (2), right guide rail
(3) it is symmetrically fixed in the left and right sidewall of workbench (1)；Left slider (32) slides on left rail (2)；Right sliding block (31) is sliding
It moves on right guide rail (3)；It is fixedly connected between left slider (32) and left leather belt (26) by fixed block (30)；Right sliding block (31) and
It is fixedly connected between right leather belt (27) by fixed block (30)；Left leather belt (26) front end bypasses left belt wheel (7)；Rear end is around driven
Belt pulley (25)；Left belt wheel (7) covers on axis I (6)；Axis I (6) is fixed on left rail (2)；Driven pulley (25) is fixed on
On follower lever (24)；Right leather belt (27) front end bypasses right belt wheel (9)；Rear end bypasses drive pulley (28)；Right belt wheel (9) covers
On axis II (8)；Axis II (8) is fixed on right guide rail (3)；Drive pulley (28) is fixed on driving lever (22)；Driving lever (22)
One end connect with follower lever (24) by shaft coupling (23)；The output of the other end and driving motor I (21) of driving lever (22)
End connection；
The powdering module includes scraper (10), connecting rod (11), adjustment gear (12), rack gear (13), connector (14), crossbeam
(15), cross bar (16), card slot (17), rotary head (18), shaft (19), nut (20)；The both ends of crossbeam (15) respectively with right sliding block
(31), left slider (32) side connects；A connector (14) is respectively set in crossbeam (15) left and right ends；Connector (14) lower end
It is connect with rack gear (13)；An adjustment gear (12) is respectively arranged in the inside of two toothed racks (13)；Rack gear (13) and adjustment gear
(12) it is intermeshed；Card slot (17) are set in the middle part of adjustment gear (12)；Setting and card slot (17) shape on shaft (19) excircle
Structure that shape matches simultaneously is inserted into card slot (17)；Shaft (19) one end is connect with rotary head (18)；The other end sequentially passes through gear
(12), connecting rod (11), cross bar (16)；And connecting rod (11), crossbeam (16), gear (12) are fixed on one by nut (20)
It rises；Connecting rod (11) lower end is connect with scraper (10)；Scraper (10) is set to above workbench (1)；
Compacting module includes sliding rail (29), powder feeding cylinder (34), dress powder space (35), wheel (36), connecting shaft (37), driving motor II
(38), connecting rod (39), upper flange plate (40), lower flange (41), electrohydraulic cylinder (42), telescopic rod (43), pressure head I (44) and
Pressure head II (45)；Powder feeding cylinder outer wall (33) are equipped with outside powder feeding cylinder (34)；During powder feeding cylinder (34) moves downward；It is flat with work
The height of platform (1) apart is dress powder space (35)；The surface of powder feeding cylinder (34) is equipped with sliding rail (29)；2 wheels (36) are placed in
In sliding rail (29)；It can be slided along sliding rail (29)；Connecting shaft (37) one end passes through two wheels (36)；The other end passes through sliding rail (29)
Side wall is connect with driving motor II (38)；Connecting rod (39) upper end passes through sliding rail (29) and connect with connecting shaft (37)；Lower end and upper flange
Disk (40) connection；Upper flange plate (40) and lower flange (41) are by being bolted fixation；Lower flange (41) lower end passes through electronic
Hydraulic cylinder (42) is connect with telescopic rod (43)；Telescopic rod (43) lower end is equipped with pressure head I (44) or pressure head II (45).
2. the compacting of SLM powder bed and power spreading device according to claim 1；It is characterized by: left rail (2), right guide rail (3) are equal
It is fixed in left and right sidewall by sunk screw；Forming board (4) passes through the driving bottom plate of sunk screw and workbench (1) lower end
Connection.
3. the compacting of SLM powder bed and power spreading device according to claim 1；It is characterized by: scraper (10) side is symmetrical arranged
Two threaded holes (101)；Fastening screw passes through threaded hole (101) and scraper (10) is fixed on connecting rod (11) bottom end；Scraper
(10) lower end opens up inclined surface；It is in 22o with horizontal direction；In inclined surface bottom end, rounded corner (102) are set；The material of scraper (10)
For stainless steel material.
4. the compacting of SLM powder bed and power spreading device according to claim 1；It is characterized by: crossbeam (15) passes through fastening screw
It is fixed on connector (14).
5. the compacting of SLM powder bed and power spreading device according to claim 1；It is characterized by: left leather belt (26) and right leather belt
(27) it is fixed on fixed block (30) by attachment screw；Fixed block (30) is L " shape foot iron construction.
6. the compacting of SLM powder bed and power spreading device according to claim 2；It is characterized by: sliding rail (29) is consolidated by sunk screw
It is scheduled on and workbench (1) opposite top；It is upper raised (291) that sliding rail (29) is intermediate, both ends are lower concave volume (292)；Wheel
(36) it is moved along lower concave volume (292)；Upper raised (291) top is provided with opening (293)；Connecting rod (39) upper end passes through opening
(293) it is connect with connecting shaft (37).
7. the compacting of SLM powder bed and power spreading device according to claim 1；It is characterized by: driving motor I (21), driving electricity
Machine II (38), electrohydraulic cylinder (42) are connect by conducting wire with external power supply；And it is controlled and is moved by external PLC controller.
8. the compacting of SLM powder bed and power spreading device according to claim 1；It is characterized by: pressure head I (44) is strip rectangle knot
Structure；The length and width in its section is less than the width of powder feeding cylinder (34)；It is correspondingly provided with a telescopic rod (43).
9. the compacting of SLM powder bed and power spreading device according to claim 1；It is characterized by: the shape of pressure head II (45) with give
The shape of powder cylinder (34) is similar；Its cross-sectional length and width are less than the size of powder feeding cylinder (34)；It is correspondingly provided with 3 telescopic rods
(43).
10. the compacting of SLM powder bed and power spreading device according to claim 1；It is characterized by: pressure head I (44), pressure head II (45)
It is driven when not working by telescopic rod (43) and shrinks below sliding rail (29).
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| CN201811117781.7A CN109202078B (en) | 2018-09-26 | 2018-09-26 | SLM powder bed compaction and spread powder device |
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|---|---|---|---|
| CN201811117781.7A CN109202078B (en) | 2018-09-26 | 2018-09-26 | SLM powder bed compaction and spread powder device |
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| CN110280761A (en) * | 2019-07-02 | 2019-09-27 | 宁波哈勒姆电子科技有限公司 | A kind of metal powder 3D printer seal-moving device and its implementation method |
| CN110576607A (en) * | 2019-08-19 | 2019-12-17 | 河海大学常州校区 | SLM (selective laser melting) additive manufacturing equipment with function gradient structure |
| CN112139498A (en) * | 2020-09-21 | 2020-12-29 | 昆明理工大学 | Material increase manufacturing process and equipment for selective laser melting composite online rolling |
| CN112191846A (en) * | 2020-09-21 | 2021-01-08 | 昆明理工大学 | Additive manufacturing process and equipment for rolling composite selective laser melting |
| CN112705732A (en) * | 2020-12-24 | 2021-04-27 | 佛山科学技术学院 | 3D printer and material paving method thereof |
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| CN112191846A (en) * | 2020-09-21 | 2021-01-08 | 昆明理工大学 | Additive manufacturing process and equipment for rolling composite selective laser melting |
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| CN113102769A (en) * | 2021-03-08 | 2021-07-13 | 武汉大学 | Novel composite vibration powder spreading device for additive manufacturing and powder spreading method |
| CN113427029A (en) * | 2021-05-29 | 2021-09-24 | 深圳意动航空科技有限公司 | SLM metal 3D prints and uses scraper |
| CN114714617A (en) * | 2022-03-03 | 2022-07-08 | 上海航天设备制造总厂有限公司 | Powder laying integrated device for improving compactness of workpiece and working method |
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| CN118357474A (en) * | 2024-06-19 | 2024-07-19 | 成都大学 | Forming device for processing parts by using metal powder |
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