CN108672699A - A kind of selective laser melting method - Google Patents
A kind of selective laser melting method Download PDFInfo
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- CN108672699A CN108672699A CN201810625720.5A CN201810625720A CN108672699A CN 108672699 A CN108672699 A CN 108672699A CN 201810625720 A CN201810625720 A CN 201810625720A CN 108672699 A CN108672699 A CN 108672699A
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- selective laser
- laser melting
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- work piece
- guide rail
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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
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
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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
- B22F12/224—Driving means for motion along a direction within the plane of a layer
-
- 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
- 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
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/46—Radiation means with translatory movement
- B22F12/48—Radiation means with translatory movement in height, e.g. perpendicular to the deposition plane
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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
- B22F12/50—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
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/57—Metering 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
- B22F12/60—Planarisation devices; Compression devices
- B22F12/67—Blades
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of selective laser melting methods, include the following steps：(1) selective laser melting system is utilized to work as layer metal powder on substrate upper berth；(2) it is dissolved to form an outer ring circular layer according to work piece sized laser when on layer metal powder in step (1)；(3) laser fusion forms work piece lamella in the outer ring circular layer of step (2)；(4) externally selective laser melting system layer overlay metal powder is utilized on ring layer and work piece lamella, circulating repetition step (2) and step (3), until work piece is performed integrally by when being layered processing, setting outer ring circular layer simultaneously forms appearance powder drum, processing raw material pollution waste and raw material can be avoided to be recycled the problems such as cumbersome, simultaneously according to the appropriate powdering of work piece size, from bottom to top processing and forming, realization original position process for processing；The problems such as processing efficiency is low and limitation is big is avoided, the scope of application is increased.
Description
Technical field
The present invention relates to fields, and in particular to a kind of selective laser melting method.
Background technology
SLM:Selective laser melting (selective laser melting) are one kind of increases material manufacturing technology, for gold
The rapid shaping technique for belonging to powder goes out the metal parts close to complete consistency, good mechanical properties with its energy straight forming,
One layer of metal powder is processed into fusion molding using high-power laser beam, after completing fusion, operating platform one thickness of downward
Distance continues to process next layer of powder, repeats this step, until the region whole founding for delimiting (selected needs to process) is complete
At just obtaining a three-dimensional compound.Required product (part) is exactly that successively processing logical in this way is accumulated；The prior art
In, the usually lifting of control platform realizes that bisque layering declines successively, and realization top is next machined layer；And the face of platform
Product is certain, and area corresponds to the floor space of machining area, and is directed to various sizes of work piece, the body of machining area
Product is constant so that when processing small size workpiece, still needs to fill up in the equal powder in the space of machining area so that processing raw material are dirty
Dye waste, raw material recovery processing is cumbersome, meanwhile, when to extreme large and heavy workpiece, which can not achieve processing in situ, that is, need
Field of employment is carried to after processing, processing efficiency is low, and limitation is big, and the scope of application is limited.
Therefore, in order to solve the above problem, a kind of selective laser melting method is needed, it can be suitable according to work piece size
The problems such as measuring powdering, avoiding processing raw material pollution waste and cumbersome raw material recovery processing, while realizing processing in situ, it avoids
The problems such as processing efficiency is low and limitation is big, increases the scope of application.
Invention content
In view of this, the purpose of the present invention is overcoming defect in the prior art, a kind of selective laser melting side is provided
Method can avoid processing raw material pollution waste and raw material from being recycled cumbersome etc. according to the appropriate powdering of work piece size
Problem, while realizing processing in situ, the problems such as processing efficiency is low and limitation is big is avoided, the scope of application is increased.
A kind of selective laser melting method of the present invention, includes the following steps：
(1) selective laser melting system is utilized to work as layer metal powder on substrate upper berth；
(2) it is dissolved to form an outer ring circular layer according to work piece sized laser when on layer metal powder in step (1)；
(3) laser fusion forms work piece lamella in the outer ring circular layer of step (2)；
(4) selective laser melting system layer overlay metal powder externally is utilized on ring layer and work piece lamella,
Circulating repetition step (2) and step (3), until work piece is performed integrally.
Further, in step (2), the loop wire width of outer ring circular layer is 5-1.5mm.
Further, in step (2), the inner circle of outer ring circular layer is radially 10-15mm with the minimum spacing of work piece.
Further, the selective laser melting system is the liftable selective laser melting system of power spreading device, is swashed
Photosystem is set to the scraper synchronization lifting with power spreading device on power spreading device.
Further, the selective laser melting system includes rack, the power spreading device for being laid with metal powder, selection
Property fusing metal powder Optical Maser System, be used to support the horizontal guide rail of power spreading device and for driving horizontal guide rail vertically to transport
Dynamic vertical driving mechanism, is provided on the power spreading device and horizontal guide rail cooperation driving power spreading device horizontal reciprocating movement
Horizontal drive mechanism, the Optical Maser System are relatively fixed setting with horizontal guide rail.
The beneficial effects of the invention are as follows：A kind of selective laser melting method disclosed by the invention, by being processed in layering
When, outer ring circular layer is set and forms appearance powder drum, processing raw material pollution wave can be avoided according to the appropriate powdering of work piece size
Take and raw material are recycled the problems such as cumbersome, meanwhile, from bottom to top processing and forming is processed, realizes processing in situ；It avoids processing
The problems such as efficiency is low and limitation is big, increases the scope of application.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the driving structure schematic diagram of middle berth powder box of the present invention；
Fig. 2 is the vertical view of the driving structure of middle berth powder box of the present invention；
Fig. 3 is the side view of wedge block in the present invention；
Fig. 4 is middle berth powder box of the present invention and horizontal guide rail attachment structure schematic diagram；
Fig. 5 is the driving structure schematic diagram of the powdering box with electromagnetic location in the present invention；
Fig. 6 is the driving structure schematic diagram of electromagnetic drive block in the present invention；
Fig. 7 is the driving structure schematic diagram of the powdering box with hydraulic pressure positioning in the present invention；
Fig. 8 is the structural schematic diagram of middle berth powder box of the present invention；
Fig. 9 is the structural schematic diagram of rabbling mechanism in the present invention；
Figure 10 is the side view of retracting device in the present invention；
Figure 11 is the vertical view of retracting device in the present invention；
Figure 12 is work pieces process schematic diagram in the present invention.
Specific implementation mode
Fig. 1 is the structural diagram of the present invention, as shown, a kind of selective laser melting method in the present embodiment,
The present embodiment also discloses a kind of selective laser melting method, includes the following steps：
(1) selective laser melting system is utilized to work as layer metal powder on substrate upper berth；
(2) it is dissolved to form an outer ring circular layer b according to work piece sized laser when on layer metal powder in step (1)；
(3) laser fusion forms work piece lamella a in the outer ring circular layer of step (2)；
(4) power spreading device layer overlay metal powder, circulating repetition step externally are utilized on ring layer and work piece lamella
Suddenly (2) and step (3), until work piece is performed integrally.
In the present embodiment, in step (2), the loop wire width of outer ring circular layer is 5-1.5mm；Preferably 1mm.
In the present embodiment, in step (2), the inner circle of outer ring circular layer is radially 10- with the minimum spacing of work piece
15mm；Preferably 12mm.
In the present embodiment, in step (1)-(4), Seal treatment is carried out to process equipment and workpiece by a cover body, and
Lead to inert gas in cover body.
Selective laser melting system in the present embodiment includes rack (not shown), the powdering for being laid with metal powder
Device 1, selective melting metal powder Optical Maser System, be used to support the horizontal guide rail of power spreading device 1 and for driving water
The vertical driving mechanism of 2 vertical motion of level gauge, is provided on the power spreading device 1 and the cooperation driving powdering dress of horizontal guide rail 2
The horizontal drive mechanism of 1 horizontal reciprocating movement is set, the Optical Maser System is relatively fixed setting, the laser with horizontal guide rail 2
Device is the prior art, and details are not described herein；The horizontal guide rail 2 is strip and its length direction is arranged along the horizontal, and level is led
Rail is two (including rear horizontal guide rail 2a and preceding horizontal guide rails 2) and is located at the longitudinal both sides of power spreading device 1；Pass through level
Driving motor drives, and (i.e. laterally) powdering, the upper and lower surface of the horizontal guide rail 2 are realized in sliding to power spreading device 1 in left-right direction
It is both provided with bar shaped tooth, conducive to the stability for sliding of improving the standard；Laterally indicate the glide direction of power spreading device 1, it is longitudinal to indicate
Perpendicular to lateral direction in the length direction of power spreading device 1, i.e. horizontal plane；By by horizontal guide rail, power spreading device and laser
Device system is arranged to move above and below, can when realizing that product prints in situ when product conducive to preparing, for example preparing large product
It is prepared in situ and uses, product is avoided to need to carry, especially product is indoors in use, avoiding doorway too small and cannot make product
The case where being moved to.
In the present embodiment, the horizontal drive mechanism includes horizontal drive motor, horizontal drive gear and is set to level
2 surface of guide rail and the bar shaped tooth engaged with horizontal drive gear；The horizontal drive gear includes being located at 2 upside of horizontal guide rail simultaneously
With the horizontal sliding tooth wheel of upper active of 2 engaged transmission of horizontal guide rail and positioned at 2 downside of horizontal guide rail and engage biography with horizontal guide rail 2
Driven horizontal drive gear under dynamic；The output shaft of the horizontal drive motor coordinates with the horizontal sliding tooth wheel transmission of upper active,
Driven horizontal drive gear rotational installation is in power spreading device 1 under described；Longitudinal both ends (and front and back of the power spreading device 1
To both ends) be fixedly installed mounting plate 19, the mounting plate is horizontally disposed and longitudinally outer end face is recessed to form the water
It is flat to be oriented to groove 3, be provided with horizontal drive wheel via on mounting plate at outer end, the lower end of the upper horizontal sliding tooth wheel of active from
On penetrate horizontal drive wheel via with positioned at 2 upper surface of horizontal guide rail bar shaped tooth engagement, under driven horizontal drive gear it is upper
End penetrates horizontal drive wheel via and the bar shaped tooth engagement for being located at 2 lower surface of horizontal guide rail from down；Greatly improve entire horizontal biography
The stability of dynamic mechanism driving ensures that preparation process precision is high.
In the present embodiment, the section of the horizontal guide rail 2 is the horizontal "convex" shaped that inside is directed toward at top along longitudinal direction, described
The upper and lower surface in inside of horizontal guide rail 2 is respectively arranged with bar shaped tooth, and the upper and lower surface in outside of horizontal guide rail 2 forms horizontal movement
Sliding confined planes, the end of the power spreading device 1 forms the conformal level for being coated at the two slidings confined planes 4 of two madial walls and leads
To groove 3；Longitudinal both ends (both ends i.e. in the front-back direction) of the power spreading device 1 are fixedly installed mounting plate, described
Mounting plate is horizontally disposed and longitudinally outer end face is recessed to form the horizontally-guided groove 3, is provided at outer end on mounting plate
The lower end of horizontal drive wheel via, the horizontal sliding tooth wheel of upper active 5 penetrates horizontal drive wheel via from above and is located at horizontal guide rail 2
The bar shaped tooth engagement of upper surface, under driven horizontal drive gear 6 upper end penetrated from down horizontal drive wheel via with positioned at level
The bar shaped tooth engagement of 2 lower surface of guide rail；Mounting plate longitudinally outer end indicates along longitudinal direction close to one end of horizontal guide rail, otherwise is interior
End is conducive to ensure that the stability of power spreading device motion process, the mounting plate can be prepared for wear-resistant material.
In the present embodiment, the vertical driving mechanism is right angle trigonometry including being located at 2 both ends of horizontal guide rail and longitudinal section
The left and right wedge mount (including left wedge mount 7 and right wedge mount 8) of shape and for driving left and right wedge mount transversely single-degree-of-freedom
The wedge mount drive component of sliding；The both ends of the horizontal guide rail 2 are respectively arranged with left wheel 9a and right idler wheel 9, described to roll left
Wheel presses on the driving inclined-plane of left wedge mount, and the right idler wheel presses on the driving inclined-plane of right wedge mount, wedge mount drive component
It is close to each other between left and right wedge mount or far from realizing rising or falling for horizontal guide rail 2 for driving；The left and right wedge shape
The apex angle of seat is 3-8 °；Preferably 5 °, it is conducive to balance lifting rate and lifting precision；By the spacing for controlling left and right wedge mount
From and then forming by the extruding on left and right wedge mount inclined-plane the vertical driving of horizontal guide rail 2, be conducive to improve power spreading device 1 vertical
The control accuracy and stability of movement.
In the present embodiment, the vertical driving mechanism further includes being fixed on the vertical guide post 10 of rack, described vertically to lead
Transversely it is located at the centre of horizontal guide rail 2 to column, vertical guide post is vertically provided with vertical guide groove 11, the horizontal guide rail
2 longitudinally outboard protrudes the vertical guide pad 12 to form the vertical guide groove of conformal insertion；By the setting of vertical guide groove, greatly
The accuracy and stability for improving 2 vertical motion of horizontal guide rail, greatly improve 1 control accuracy of power spreading device, ensure processing
Precision is high.
In the present embodiment, the horizontal guide rail 2 includes the preceding horizontal guide rail 2 and rear horizontal guide rail of front and back distribution along longitudinal direction
21, the preceding horizontal guide rail 2 and rear horizontal guide rail 21 are respectively positioned between left and right wedge mount, and the inclined-plane of the left and right wedge mount is set
Four are equipped with respectively at the corresponding slide-and-guide slot 13 in 2 both ends of preceding horizontal guide rail and 21 both ends of rear horizontal guide rail, the sliding is led
It is arranged to slot along longitudinal section bevel edge direction of corresponding left and right wedge mount；The kinetic stability of horizontal guide rail 2 is further increased,
Unnecessary torque is avoided to generate.
In the present embodiment, the wedge mount drive component include wedge mount driving motor 14 and with wedge mount driving motor
The driving screw rod of output shaft transmission cooperation, the bottom of the left and right wedge mount be respectively arranged with left driving screw hole and with left driving
The outer circle of the opposite right driving screw hole in screw hole direction of rotation, the driving screw rod is disposed with and left driving screw hole spiral shell in an axial direction
The first external thread section that line coordinates and the second external thread section with right driving screw hole screw-thread fit, the wedge mount driving motor are logical
It overdrives close to each other or separate between driving screw rod forward or reverse to realize left and right wedge mount；By by left driving screw hole and
Right driving screw hole is set as identical pitch and pitch is smaller, is conducive to improve driving precision, drives smooth, the stability of structure
It is good.
In the present embodiment, the driving screw rod includes the front and back preceding driving screw rod 15 being arranged and afterwards driving screw rod along longitudinal direction
16, the output shaft of the wedge mount driving motor is located at preceding driving screw rod and rear driving screw rod between side end, the wedge shape
Driving screw hole and rear driving screw hole before seat bottom is correspondingly arranged on along longitudinal direction (such as left wedge mount bottom be provided with before drive screw hole
20 drive screw hole 21 with rear), the output shaft fixed jacket of wedge mount driving motor is provided with power output gear 17, preceding driving spiral shell
Bar and rear driving screw rod end difference fixing sleeve are equipped with power input gear, and the power output gear and two power input tooth
18 engagement of wheel and passing power of slowing down；The diameter of the power output gear is more than the radius of power discrepancy gear, simple in structure
It is compact, by deceleration passing power, it is conducive to improve torque, ensures driving, meanwhile, ensure that left and right wedge mount sliding precision is high.
In the present embodiment, the bottom of the frame is provided with the laterally steering slot for being transversely oriented to left and right wedge mount,
The bottom of the left and right wedge mount is provided with the laterally steering block of the conformal insertion row guide groove, the laterally steering slot
It is dovetail groove with vertical guide groove；Slide smooth, stable structure.
In the present embodiment, the bottom of the frame is provided with the walking mechanism that can be locked up；The walking mechanism is idler wheel, institute
It states idler wheel and is provided with existing lockable mechanism, ensure that rack is be easily moved, be suitable for processing in situ.
Certainly, whole device when in use, need to cover in whole device outside with unification and bottom opening and bottom surface are closed
Seal closure, the seal closure can be transparent and retractable cover body, conducive to when using to vacuumize and be passed through in it inert gas into
Row processing.
In the present embodiment, the horizontal guide rail is vertically vertically provided with electromagnetism pressing force, further includes for providing
The electromagnetism hold-down mechanism of electromagnetism pressing force is stated, the electromagnetism hold-down mechanism includes the compact heap 23 of vertically single setting free to slide
With the vertically electromagnetic drive block of single setting free to slide positioned at the top of compact heap and in such a way that vertical position is fixedly adjustable
22, the compact heap is permanent magnet, is provided with electromagnetic coil in the electromagnetic drive block, the electromagnetic coil can be generated for driving
Dynamic permanent magnet moves downward the electromagnetic field of level of compression guide rail；Certainly, battery coil is connected by external cord and electric control module
It connects, electric control module controls size of current and the direction of electromagnetic coil, and then controls the pressing force of compact heap, simple in structure tight
It gathers；The electric control module belongs to the prior art, and details are not described herein.
In the present embodiment, the electromagnetism hold-down mechanism further includes the fixation chain for adjusting electromagnetic drive block height, institute
It states fixed chain 26 and setting is vertically moved by upper support gear 24 and lower support gear 25, be provided on the fixed chain
Lockable mechanism, the electromagnetic drive block are fixed on fixed chain and can be with fixed chain vertical motions in a manner of it can be locked up；
The vertical position that electromagnetic drive block is controlled conducive to fixed chain ensures that the vertical spacing of electromagnetic drive block and compact heap is suitable, protects
While card compresses, the vertical height of electromagnetism hold-down mechanism is relatively low.
In another embodiment, further include hydraulic compression component for applying downward hydraulic compression power to horizontal guide rail,
The hydraulic compression component includes hydraulic pump 27, hydraulic cylinder, return duct 31 and oil storage cabin, and the oil outlet of the hydraulic pump passes through oil
Pipe 28 is connected to the driving inner cavity of hydraulic cylinder 29 and the hydraulic stem of driving hydraulic cylinder compresses downwards horizontal guide rail, the oil inlet of hydraulic pump
Mouth is connected to by pipeline with oil storage cabin, and the return duct is provided with the solenoid valve 30 for controlling return duct break-make, return duct
One end is connected to the driving inner cavity of hydraulic cylinder, and the other end is connected to oil storage cabin；By hydraulic pump to the hydraulic stem (end of hydraulic stem
It is fixedly installed compact heap 30) continuous, larger pressing force is generated, and when needing elevated levels guide rail, controllable opening is set
It is placed in the solenoid valve of return duct, is conducive to the driving inner cavity pressure release of hydraulic cylinder, is conducive to hydraulic stem and rises, and horizontal guide rail lifting operations
After the completion, solenoid valve is closed, so that the driving inner cavity of hydraulic cylinder is generated high pressure, ensures the vertical level of compression guide rail of hydraulic stem.
In the present embodiment, the power spreading device includes that bottom is provided with the powdering box 31 of powder falling mouth and is set to powder falling mouth cross
To the doctor blade 32 in centre position, powder falling mouth is separated into left powder falling mouth 34 and right powder falling mouth 35, the powder falling by the doctor blade
The upper end of mouth is provided with the closing device that left powder falling mouth 34 or right powder falling mouth 35 are closed for selectivity；By controlling closing device
Rotatory beats to open left powder falling mouth or right powder falling mouth, is conducive to realize that power spreading device realizes two-way powder laying；Powdering can be effectively improved
Efficiency, ensure powdering fineness, while simple in structure, running is smooth, and failure rate is small.
In the present embodiment, the closing device includes being articulated with the turnover panel 33 for scraping air knife top and for driving turnover panel to rotate
Turnover panel driving motor, the turnover panel driving motor be used for by drive turnover panel forward or reverse realize turnover panel to right powder falling mouth or
Left powder falling mouth is closed；It is simple and compact for structure, it is easy to accomplish；The turnover panel is elongated plates, certainly, the rotation of the turnover panel
Sealing strip can be arranged in outer side edges, and the madial wall of sealing strip and powdering box, which is formed, after returning face plate rotation seals, simple in structure, controlling party
Just.
In the present embodiment, discharge roller 36, institute are additionally provided in a manner of being rotated around center axis above the turnover panel
The outer circle of discharge roller and two laterally inboard wall gap settings of powdering box and respectively a left side corresponding with left discharge port and right discharge port
Discharge gap and right discharging gap, further includes being driven for driving and controlling the discharge roller of the positive rotary speed of discharge roller or speed reversal
Motor；The lateral section of the powdering box includes upper rectangular section, middle inverted trapezoidal section and lower rectangular section, the upper rectangle from top to bottom
The width of section is more than the width of lower rectangular section, and middle inverted trapezoidal section is the isosceles trapezoid that upper bottom is more than bottom, and the discharge roller 36 is set
It is placed in the upper end inside lower rectangular section, the turnover panel is set to the lower end inside lower rectangular section, and the bottom of the doctor blade 32 is worn
Go out lower rectangular section.
In the present embodiment, it is provided in the powdering box for making powder be formed along powdering box length direction in powdering box
The rabbling mechanism of bidirectional circulating flowing, powder that can be inside uniform stirring power spreading device ensure that powdering is smooth, be conducive to quickly and
Accurate powdering；And it is simple and compact for structure, it is conducive to integral elevating；The rabbling mechanism is set on powdering box in rectangular section；
The rabbling mechanism includes the powder activated that helical blade 39 is provided with along the outer circle that powdering box length direction is arranged
Bar, the powder activated bar include the left powder activated bar 37 being set up in parallel along powdering box width direction and right powder activated bar
38, be located at left powder activated bar helical blade with positioned at right powder activated bar helical blade it is oppositely oriented, further include use
Pass through transmission chain and a left side in the output shaft of the servo motor for driving left powder activated bar and right powder activated bar, the servo motor
Powder activated bar and the transmission cooperation of right powder activated bar；Conducive to effective flowing is formed in small space, ensure uniform stirring.
In the present embodiment, the intermediate mistake for stone box inner cavity to be separated into epicoele and cavity of resorption is provided in the stone box
Sieve plate, the upper intracavitary are provided with rabbling mechanism, after the powder of upper intracavitary after stirring by intermediate filtered web plate by being filtered
Fall into cavity of resorption and further strip blanking port；By being provided in stone box for stone box inner cavity to be separated into
The intermediate filtered web plate of epicoele and cavity of resorption, upper intracavitary are provided with rabbling mechanism, in the process for having clout to recycle, greatly improve powder
Cleanliness factor, ensure that processing quality is high.
In the present embodiment, the intermediate filtered web plate is two pieces of (including upper intermediate filtered web plate 40 and lower intermediate filtered nets
Plate 41), and two screen packs are vertically side by side with detachable installation settings；Flange intermediate filtered web plate is replaced online,
When normal use, only with one block of intermediate filtered web plate.
In the present embodiment, the horizontal slot for the detachable installation of intermediate filtered web plate is provided in the stone box,
The intermediate filtered web plate is installed on stone box by horizontal slot grafting；Intermediate filtered web plate is convenient to mount and dismount, and improves operation effect
Rate.
Further include the clout recycling dress for being recycled to laying device unrestrained clout in laying device in the present embodiment
It sets；Metal powder clout is effectively recycled in guarantee, avoids waste of material, is back and forth used conducive to material, effectively reduces system
Volume is moved easily, and saves manufacturing cost.
In the present embodiment, the surplus material recovery device includes fixed jacket in the annular suction tube 43 of 42 bottom of work piece
The suction pump 44 being connected to annular suction tube cavity with pump orifice, the outlet of the suction pump 44 is matched by pipeline and laying device
Merging is reused for clout to be delivered to laying device；The annular suction tube side wall is provided with suction hole；To clout into
Row fully recycling, the powder that annular suction tube is conducive to fall workpiece lateral wall aspirate, realize and recycle, avoid simultaneously
The powder of recycling is contaminated.
In the present embodiment, suction front tube 45 is provided with and communicated at the suction hole, the suction front tube is pliability
Pipe；The suction hole and suction front tube are multiple and are arranged in a one-to-one correspondence that suction hole and suction front tube are along annular suction tube
It is circumferentially disposed, it is set as flexible pipe by the way that front tube will be aspirated, is conducive to the conformal each suction front end of adjusting of shape according to workpiece
The pump orifice position of pipe ensures that pumping efficiency is high.
In the present embodiment, the head cover of the powdering box is tilting strainer shape cover board, the strainer shape cover board be used for into
The powder entered in powdering box carries out coarse filtration；The horizontally disposed simultaneously face strainer shape cover board of outlet injection direction of the suction pump 44
Fast filtering is realized in inclined surface, while the jet power of suction pump outlet can avoid impurity from accumulating and make on strainer shape cover board
At closure.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (5)
1. a kind of selective laser melting method, it is characterised in that：Include the following steps：
(1) selective laser melting system is utilized to work as layer metal powder on substrate upper berth；
(2) it is dissolved to form an outer ring circular layer according to work piece sized laser when on layer metal powder in step (1)；
(3) laser fusion forms work piece lamella in the outer ring circular layer of step (2)；
(4) selective laser melting system layer overlay metal powder, cycle externally are utilized on ring layer and work piece lamella
Step (2) and step (3) are repeated, until work piece is performed integrally.
2. a kind of selective laser melting method according to claim 1, it is characterised in that：In step (2), outer ring
The loop wire width of layer is 5-1.5mm.
3. a kind of selective laser melting method according to claim 2, it is characterised in that：In step (2), outer ring
The inner circle of layer is radially 10-15mm with the minimum spacing of work piece.
4. a kind of selective laser melting method according to claim 3, it is characterised in that：The selective laser melting
System is the liftable selective laser melting system of power spreading device, and laser system is set on power spreading device and power spreading device
Scraper synchronization lifting.
5. a kind of selective laser melting method according to claim 4, it is characterised in that：The selective laser melting
System include rack, the power spreading device for being laid with metal powder, selective melting metal powder Optical Maser System, for branch
The horizontal guide rail of power spreading device and the vertical driving mechanism for driving horizontal guide rail vertical motion are supportted, is set on the power spreading device
It is equipped with the horizontal drive mechanism for coordinating driving power spreading device horizontal reciprocating movement with horizontal guide rail, the Optical Maser System and level
Guide rail is relatively fixed setting.
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| CN201810625720.5A CN108672699A (en) | 2018-06-18 | 2018-06-18 | A kind of selective laser melting method |
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| CN201810625720.5A CN108672699A (en) | 2018-06-18 | 2018-06-18 | A kind of selective laser melting method |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006068819A (en) * | 2004-08-31 | 2006-03-16 | Winkler & Duennebier Ag | Method and device for making cutting roller or embossing roller by laser overlay welding |
| US20120067853A1 (en) * | 2010-09-16 | 2012-03-22 | Howmedica Osteonics Corp. | Methods for manufacturing porous orthopaedic implants |
| CN103691947A (en) * | 2013-12-10 | 2014-04-02 | 华南理工大学 | Powder spreading device and powder spreading method for selective laser melting (SLM) equipment |
| CN103726049A (en) * | 2014-01-09 | 2014-04-16 | 武汉新瑞达激光工程有限责任公司 | Laser additive manufacturing method and device of metal parts |
| EP2737964A1 (en) * | 2012-11-30 | 2014-06-04 | MBDA France | Method for melting powder by heating the area adjacent to the bath |
| CN204724851U (en) * | 2015-06-11 | 2015-10-28 | 广东奥基德信机电有限公司 | A kind of double excitation constituency sinters and melts 3D printing device that is nonmetal, metal |
| CN205057062U (en) * | 2015-10-13 | 2016-03-02 | 南京中科煜宸激光技术有限公司 | Metal rapid prototyping machine |
| CN106180711A (en) * | 2016-07-15 | 2016-12-07 | 西安交通大学 | A kind of SLM/SLS towards dusty material spreads powder craft |
| CN106363172A (en) * | 2016-09-29 | 2017-02-01 | 中北大学 | Selective laser melting forming powder laying and product porosity detection device and method |
| CN106493368A (en) * | 2016-12-22 | 2017-03-15 | 华南理工大学 | A kind of selective laser fusing high efficiency forming device and method |
| CN206343623U (en) * | 2016-12-07 | 2017-07-21 | 中北大学 | One kind of multiple metal powder material selective laser melting building mortions |
| CN206415603U (en) * | 2017-01-17 | 2017-08-18 | 华南理工大学 | A kind of many material laser selective melting shaped devices |
-
2018
- 2018-06-18 CN CN201810625720.5A patent/CN108672699A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006068819A (en) * | 2004-08-31 | 2006-03-16 | Winkler & Duennebier Ag | Method and device for making cutting roller or embossing roller by laser overlay welding |
| US20120067853A1 (en) * | 2010-09-16 | 2012-03-22 | Howmedica Osteonics Corp. | Methods for manufacturing porous orthopaedic implants |
| EP2737964A1 (en) * | 2012-11-30 | 2014-06-04 | MBDA France | Method for melting powder by heating the area adjacent to the bath |
| CN103691947A (en) * | 2013-12-10 | 2014-04-02 | 华南理工大学 | Powder spreading device and powder spreading method for selective laser melting (SLM) equipment |
| CN103726049A (en) * | 2014-01-09 | 2014-04-16 | 武汉新瑞达激光工程有限责任公司 | Laser additive manufacturing method and device of metal parts |
| CN204724851U (en) * | 2015-06-11 | 2015-10-28 | 广东奥基德信机电有限公司 | A kind of double excitation constituency sinters and melts 3D printing device that is nonmetal, metal |
| CN205057062U (en) * | 2015-10-13 | 2016-03-02 | 南京中科煜宸激光技术有限公司 | Metal rapid prototyping machine |
| CN106180711A (en) * | 2016-07-15 | 2016-12-07 | 西安交通大学 | A kind of SLM/SLS towards dusty material spreads powder craft |
| CN106363172A (en) * | 2016-09-29 | 2017-02-01 | 中北大学 | Selective laser melting forming powder laying and product porosity detection device and method |
| CN206343623U (en) * | 2016-12-07 | 2017-07-21 | 中北大学 | One kind of multiple metal powder material selective laser melting building mortions |
| CN106493368A (en) * | 2016-12-22 | 2017-03-15 | 华南理工大学 | A kind of selective laser fusing high efficiency forming device and method |
| CN206415603U (en) * | 2017-01-17 | 2017-08-18 | 华南理工大学 | A kind of many material laser selective melting shaped devices |
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Application publication date: 20181019 |