CN108746617A - Selective laser melting device with electromagnetic location power spreading device - Google Patents
Selective laser melting device with electromagnetic location power spreading device Download PDFInfo
- Publication number
- CN108746617A CN108746617A CN201810625707.XA CN201810625707A CN108746617A CN 108746617 A CN108746617 A CN 108746617A CN 201810625707 A CN201810625707 A CN 201810625707A CN 108746617 A CN108746617 A CN 108746617A
- Authority
- CN
- China
- Prior art keywords
- guide rail
- driving
- spreading device
- wedge mount
- power spreading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
-
- 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
- B22F12/224—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
- B22F12/50—Means for feeding of material, e.g. heads
-
- 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
-
- 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
Abstract
The invention discloses a kind of selective laser melting devices with electromagnetic location power spreading device, the laser of power spreading device, selective melting metal powder including rack, for being laid with metal powder, the horizontal guide rail for being used to support power spreading device and the vertical driving mechanism for driving horizontal guide rail vertical motion are provided with the horizontal drive mechanism for coordinating driving power spreading device horizontal reciprocating movement with horizontal guide rail on the power spreading device；The vertical driving mechanism includes positioned at horizontal guide rail both ends and longitudinal section is for the left and right wedge mount of right angled triangle and for driving the left and right wedge mount wedge mount drive component that transversely single-degree-of-freedom is slided；It while capable of ensureing power spreading device stability, realizes that power spreading device height can be adjusted accurately, realizes processing in situ, avoid the problems such as processing efficiency is low and limitation is big, increase the scope of application.
Description
Technical field
The present invention relates to laser fields, and in particular to a kind of selective laser melting dress with electromagnetic location power spreading device
It sets.
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 device with electromagnetic location power spreading device is needed,
It while capable of ensureing power spreading device stability, realizes that power spreading device height can be adjusted accurately, realizes processing in situ, avoid processing
The problems such as efficiency is low and limitation is big, increases the scope of application；It is vertically consolidated conducive to power spreading device simultaneously, simple in structure, adjusting side
Just.
Invention content
In view of this, the purpose of the present invention is overcoming defect in the prior art, provide with electromagnetic location power spreading device
Selective laser melting device, while capable of ensureing power spreading device stability, realize power spreading device height can accurately adjust,
It realizes processing in situ, avoids the problems such as processing efficiency is low and limitation is big, increase the scope of application；It is vertical conducive to power spreading device simultaneously
It is firm, it is simple in structure, it is easy to adjust.
The present invention the selective laser melting device with electromagnetic location power spreading device, including rack, for being laid with gold
Belong to the power spreading device of powder, the laser of selective melting metal powder, be used to support the horizontal guide rail of power spreading device and be used for
The vertical driving mechanism of horizontal guide rail vertical motion is driven, is provided on the power spreading device and coordinates driving powdering with horizontal guide rail
The horizontal drive mechanism of device horizontal reciprocating movement；The vertical driving mechanism includes positioned at horizontal guide rail both ends and longitudinal section
For the left and right wedge mount of right angled triangle and for driving the wedge mount driving that transversely single-degree-of-freedom is slided of left and right wedge mount
Component；The both ends of the horizontal guide rail are respectively arranged with left wheel and right idler wheel, and the left wheel presses on the drive of left wedge mount
Dynamic inclined-plane, the right idler wheel press on the driving inclined-plane of right wedge mount, wedge mount drive component for drive left and right wedge mount it
Between it is close to each other or far from realizing that horizontal guide rail rising or falling；The horizontal guide rail is vertically vertically provided with electromagnetism pressure
Clamp force.
Further, further include electromagnetism hold-down mechanism for providing the electromagnetism pressing force, the electromagnetism hold-down mechanism packet
Include the vertically compact heap of single setting free to slide and positioned at the top of compact heap and the edge in such a way that vertical position is fixedly adjustable
The electromagnetic drive block of vertical single setting free to slide, the compact heap are permanent magnet, and electromagnetism is provided in the electromagnetic drive block
Coil, the electromagnetic coil can generate the electromagnetic field for driving permanent magnet to move downward level of compression guide rail.
Further, the electromagnetism hold-down mechanism further includes the fixation chain for adjusting electromagnetic drive block height, described solid
Determine chain and setting vertically moved by upper support gear and lower support gear, lockable mechanism is provided on the fixed chain,
The electromagnetic drive block is fixed on fixed chain and can be with fixed chain vertical motion in a manner of it can be locked up.
Further, the apex angle of the left and right wedge mount is 3-8 °.
Further, the vertical driving mechanism further includes being fixed on the vertical guide post of rack, the vertical guide post edge
It is laterally positioned in the centre of horizontal guide rail, vertical guide post is vertically provided with vertical guide groove, and the longitudinal direction of the horizontal guide rail is outer
Side protrudes the vertical guide pad to form the vertical guide groove of conformal insertion；The compact heap and electromagnetic drive block may be contained within vertically leading
Into slot, and compact heap vertically compresses downwards vertical guide pad；The bottom of the vertical guide groove is vertically provided with electromagnetism
Drive block targeting port is vertically additionally provided with fixed chain installation cavity, the upper support gear and lower branch in the vertical guide post
Support gear is rotatablely installed respectively in the upper and lower end of fixed chain installation cavity, and fixed chain is set in fixed chain installation cavity, and electromagnetism drives
Motion block passes through electromagnetic drive block targeting port to be fixedly connected with fixed chain.
Further, the horizontal guide rail includes the preceding horizontal guide rail and rear horizontal guide rail of front and back distribution along longitudinal direction, before described
Horizontal guide rail and rear horizontal guide rail are respectively positioned between left and right wedge mount, and the inclined-plane of the left and right wedge mount is provided with four difference
In the corresponding slide-and-guide slot in preceding horizontal guide rail both ends and rear horizontal guide rail both ends, the slide-and-guide slot is along corresponding left and right wedge
Longitudinal section bevel edge direction of shape seat is arranged.
Further, the wedge mount drive component includes wedge mount driving motor and the output shaft with wedge mount driving motor
It is driven the driving screw rod of cooperation, the bottom of the left and right wedge mount is respectively arranged with left driving screw hole and is revolved with left driving screw hole
Turn the opposite right driving screw hole in direction, the outer circle of the driving screw rod is disposed with and left driving screw hole screw-thread fit in an axial direction
The first external thread section and the second external thread section with right driving screw hole screw-thread fit, the wedge mount driving motor passes through driving
It is close to each other or separate between driving screw rod forward or reverse to realize left and right wedge mount.
Further, the driving screw rod includes the front and back preceding driving screw rod being arranged and afterwards driving screw rod along longitudinal direction, the wedge
The output shaft of shape seat driving motor is located at preceding driving screw rod and rear driving screw rod between side end, wedge mount driving motor it is defeated
Shaft fixed jacket is provided with power output gear, and it is defeated that preceding driving screw rod and rear driving screw rod end difference fixing sleeve are equipped with power
Enter gear, the power output gear is engaged with two power input gears and passing power of slowing down.
Further, the bottom of the frame is provided with the laterally steering slot for being transversely oriented to left and right wedge mount, described
The bottom of left and right wedge mount is provided with the laterally steering block of the conformal insertion row guide groove, the laterally steering slot and perpendicular
It is dovetail groove to guide groove.
Further, the bottom of the frame is provided with the walking mechanism that can be locked up.
The beneficial effects of the invention are as follows：A kind of selective laser with electromagnetic location power spreading device disclosed by the invention is molten
Makeup is set, and is simultaneously formed appearance powder drum by the way that outer ring circular layer when being layered processing, is arranged, can in right amount be spread according to work piece size
Powder avoids processing raw material pollution from wasting the problems such as cumbersome with raw material recovery processing, meanwhile, from bottom to top molding adds for processing
Work realizes processing in situ；The problems such as processing efficiency is low and limitation is big is avoided, the scope of application is increased.
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
As shown, the selective laser melting device with electromagnetic location power spreading device in the present embodiment, including machine
Frame (not shown), the power spreading device 1 for being laid with metal powder, selective melting metal powder Optical Maser System, for branch
Support the horizontal guide rail of power spreading device 1 and the vertical driving mechanism for driving 2 vertical motion of horizontal guide rail, the power spreading device 1
On be provided with horizontal guide rail 2 coordinate driving 1 horizontal reciprocating movement of power spreading device horizontal drive mechanism, the Optical Maser System
It is relatively fixed setting with horizontal guide rail 2, the laser is the prior art, and details are not described herein；The horizontal guide rail 2 is strip
Shape and its length direction is arranged along the horizontal, horizontal guide rail are two (including rear horizontal guide rail 2a and preceding horizontal guide rails 2) and respectively
The both sides longitudinal positioned at power spreading device 1；It is driven by horizontal drive motor, (i.e. laterally) sliding in left-right direction of power spreading device 1
Realize powdering, the upper and lower surface of the horizontal guide rail 2 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, longitudinal length direction for indicating power spreading device 1, i.e., perpendicular to lateral side in horizontal plane
To；It is removable above and below by the way that horizontal guide rail, power spreading device and Optical Maser System to be arranged to, conducive to preparing production is realized when product
Product print in situ, such as when preparing large product, can be prepared in situ and use, avoid product from needing to carry, especially product is in room
It is interior in use, the case where avoiding doorway too small and product cannot being made to be 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.
The present embodiment also discloses a kind of selective laser melting method, includes the following steps：
(1) work as layer metal powder on substrate upper berth using the selective laser melting device with electromagnetic location power spreading device
End；
(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.
The selective laser melting with electromagnetic location power spreading device in the selective laser melting method is above-mentioned
The selective laser melting with electromagnetic location power spreading device of structure.
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 (10)
1. a kind of selective laser melting device with electromagnetic location power spreading device, it is characterised in that：Including rack, for spreading
If the laser of the power spreading device of metal powder, selective melting metal powder, the horizontal guide rail for being used to support power spreading device and
Vertical driving mechanism for driving horizontal guide rail vertical motion, is provided on the power spreading device and horizontal guide rail cooperation drives
The horizontal drive mechanism of power spreading device horizontal reciprocating movement；The vertical driving mechanism includes being located at horizontal guide rail both ends and longitudinal direction
Section is for the left and right wedge mount of right angled triangle and for driving the left and right wedge mount wedge mount that transversely single-degree-of-freedom is slided
Drive component；The both ends of the horizontal guide rail are respectively arranged with left wheel and right idler wheel, and the left wheel presses on left wedge mount
Driving inclined-plane, the right idler wheel presses on the driving inclined-plane of right wedge mount, and wedge mount drive component is for driving left and right wedge shape
Close to each other or rising or falling far from realization horizontal guide rail between seat；The horizontal guide rail is vertically vertically provided with electricity
Magnetic pressure clamp force.
2. the selective laser melting device according to claim 1 with electromagnetic location power spreading device, it is characterised in that：
Further include the electromagnetism hold-down mechanism for providing the electromagnetism pressing force, the electromagnetism hold-down mechanism includes vertically single free skating
It the compact heap of dynamic setting and vertically single positioned at the top of compact heap and in such a way that vertical position is fixedly adjustable free to slide sets
The electromagnetic drive block set, the compact heap are permanent magnet, and electromagnetic coil, the electromagnetic coil are provided in the electromagnetic drive block
The electromagnetic field for driving permanent magnet to move downward level of compression guide rail can be generated.
3. the selective laser melting device according to claim 2 with electromagnetic location power spreading device, it is characterised in that：
The electromagnetism hold-down mechanism further includes the fixation chain for adjusting electromagnetic drive block height, and the fixed chain passes through upper support
Gear and lower support gear vertically move setting, and lockable mechanism is provided on the fixed chain, and the electromagnetic drive block is solid
Due to fixed chain and can be with fixation chain vertical motion in a manner of it can be locked up.
4. the selective laser melting device according to claim 1 with electromagnetic location power spreading device, it is characterised in that：
The apex angle of the left and right wedge mount is 3-8 °.
5. the selective laser melting device according to claim 3 with electromagnetic location power spreading device, it is characterised in that：
The vertical driving mechanism further includes being fixed on the vertical guide post of rack, and the vertical guide post is transversely located at horizontal guide rail
Centre, vertical guide post is vertically provided with vertical guide groove, the longitudinally outboard of the horizontal guide rail protrude to be formed it is conformal embedding
Enter the vertical guide pad of vertical guide groove；The compact heap and electromagnetic drive block may be contained in vertical guide groove, and compact heap
Vertical guide pad is vertically compressed downwards；The bottom of the vertical guide groove is vertically provided with electromagnetic drive block targeting port, institute
It states and is vertically additionally provided with fixed chain installation cavity in vertical guide post, the upper support gear and lower support gear rotate peace respectively
Upper and lower end loaded on fixed chain installation cavity, fixed chain are set in fixed chain installation cavity, and electromagnetic drive block passes through electromagnetic drive
Block targeting port is fixedly connected with fixed chain.
6. the selective laser melting device according to claim 1 with electromagnetic location power spreading device, it is characterised in that：
The horizontal guide rail includes the preceding horizontal guide rail and rear horizontal guide rail of front and back distribution along longitudinal direction, the preceding horizontal guide rail and rear level
Guide rail is respectively positioned between left and right wedge mount, and the inclined-plane of the left and right wedge mount is provided with four respectively at preceding horizontal guide rail both ends
Slide-and-guide slot corresponding with rear horizontal guide rail both ends, the slide-and-guide slot are oblique along longitudinal section of corresponding left and right wedge mount
Edge direction is arranged.
7. the selective laser melting device according to claim 4 with electromagnetic location power spreading device, it is characterised in that：
The wedge mount drive component includes wedge mount driving motor and the driving with the output shaft transmission cooperation of wedge mount driving motor
The bottom of screw rod, the left and right wedge mount is respectively arranged with left driving screw hole and the right side opposite with left driving screw hole direction of rotation
Screw hole, the outer circle of the driving screw rod is driven to be disposed with the first external thread section with left driving screw hole screw-thread fit in an axial direction
With with it is right driving screw hole screw-thread fit the second external thread section, the wedge mount driving motor by driving drive screw rod rotate forward or
It is close to each other or separate between the left and right wedge mount of reversion realization.
8. the selective laser melting device according to claim 7 with electromagnetic location power spreading device, it is characterised in that：
The driving screw rod includes the front and back preceding driving screw rod being arranged and rear driving screw rod along longitudinal direction, the wedge mount driving motor it is defeated
Shaft is located at preceding driving screw rod and rear driving screw rod between side end, and the output shaft fixed jacket of wedge mount driving motor is arranged
Dynamic output gear, preceding driving screw rod and rear driving screw rod end difference fixing sleeve are equipped with power input gear, the power
Output gear is engaged with two power input gears and passing power of slowing down.
9. the selective laser melting device according to claim 5 with electromagnetic location power spreading device, it is characterised in that：
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
Portion is provided with the laterally steering block of the conformal insertion row guide groove, and the laterally steering slot and vertical guide groove are dovetail
Slot.
10. the selective laser melting device according to claim 1 with electromagnetic location power spreading device, feature exist
In：The bottom of the frame is provided with the walking mechanism that can be locked up.
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|---|---|---|---|
| CN201810625707.XA CN108746617B (en) | 2018-06-18 | 2018-06-18 | Selective laser melting device with electromagnetic positioning powder spreading device |
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|---|---|---|---|
| CN201810625707.XA CN108746617B (en) | 2018-06-18 | 2018-06-18 | Selective laser melting device with electromagnetic positioning powder spreading device |
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| CN108746617B (en) | 2020-11-03 |
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