CN107262717B - Subregion is gone up and down into form selective laser melting workbench - Google Patents
Subregion is gone up and down into form selective laser melting workbench Download PDFInfo
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- CN107262717B CN107262717B CN201710669903.2A CN201710669903A CN107262717B CN 107262717 B CN107262717 B CN 107262717B CN 201710669903 A CN201710669903 A CN 201710669903A CN 107262717 B CN107262717 B CN 107262717B
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- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- 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]
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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
- B22F12/30—Platforms or substrates
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
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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
- B22F12/55—Two or more means for feeding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/90—Means for process control, e.g. cameras or sensors
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- 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 liftings of subregion into form selective laser melting workbench, including at least the forming table for powdering and workpiece sintering forming, forming table includes shaping interior base station and being coated to shape interior base station and radially from least one outer base station of forming that successively housing is arranged from inside to outside, base station and the outer base station of each forming are arranged in a manner of liftable in shaping, base station or the outer base station of the forming individually decline in shaping, or the outer base station of forming and the outer base station of adjacent forming or/and the interior base station of forming decline jointly and can be formed for laser sintering (SLS) workpiece to powdering region；Powder supply platform, subregion lifting forming table can be gone up and down according to the size of thin-walled parts to be formed, subregion greatly reduces the demand of powder, and improve powder service efficiency to form the part to be formed for being applicable in different sizes.
Description
Technical field
The present invention relates to selective laser melting technical field, in particular to a kind of subregion lifting is at form selective laser
Melt workbench.
Background technique
Selective laser melting, also known as SLM are completely melt under the heat effect of laser beam using metal powder, through cold
But it solidifies and a kind of molding technology.Under the effect of high laser energy density, metal powder is completely melt, real after cooling
It is now formed with solid metal metallurgy soldering, selective laser melting is exactly based on this process, and accumulation molds 3D solid layer by layer.
According to the hierarchy slicing information of molded part three-dimensional CAD model, scanning system control laser beam acts on the powder in region to be formed
End, after one layer scanned, workbench can decline the distance after a layer, and then powder feed system conveys a certain amount of powder, paving
The powder that the roller of powder system sprawls a thickness is deposited on molded layer.Then, above-mentioned two forming process is repeated, until
The slicing layer of all three-dimensional CAD models is all scanned.
In the prior art, selective laser melting equipment is mostly integral type knot for the workbench of laser sintering (SLS) workpiece
Structure carries out powdering by the entire lowering of integral structure workbench, and carries out workpiece sintering forming, and is based on selective laser
The process characteristic successively processed is melted, on integral type lifting forming workbench, either shapes mostly large-sized thin-walled parts,
Powder will finally fill up the height of entire forming workbench decline, therefore, just needed in workpiece sintering forming process using
A large amount of powder, powder is although recyclable, but also results in a large amount of powder, and contain flue dust, not only reduces powder
Quality, powder cost input is big, and laser system is extremely strong to the sensibility of dust, dust degree is excessively high easily cause it is larger
Injury.
Therefore, it is necessary to the workbench to existing selective laser melting to improve, and make it can be according to processing part
Size, subregion selection forming working region, reduces the usage amount of powder, to reduce the input cost of powder, and reduces flue dust
Generation.
Summary of the invention
It, can be according to adding in view of this, the present invention provides a kind of lifting of subregion into form selective laser melting workbench
The size of work part, subregion selection forming working region, reduces the usage amount of powder, to reduce the input cost of powder, and
Reduce the generation of flue dust.
Subregion lifting of the invention is included at least at form selective laser melting workbench for powdering and workpiece sintering
The forming table of forming, forming table shape interior base station and radially from successively housing is arranged from inside to outside including shaping interior base station and being coated at
At least one of column setting shapes outer base station, shapes interior base station and the outer base station of each forming is arranged in a manner of liftable, at
It is total individually to decline or shape base station in outer base station and the outer base station of adjacent forming or/and forming for base station or the outer base station of forming in shape
It can be formed for laser sintering (SLS) workpiece with decline to powdering region.
Further, further include the powder supply platform that forming table is set on the outside of at least side of powdering direction and is used for powder supply, supply
Powder platform include in powder supply base station and be coated at base station in powder supply and radially from from inside to outside successively housing be arranged at least one
The outer base station of a powder supply, base station and the outer base station of each powder supply are arranged in a manner of liftable in powder supply, base station or powder supply in powder supply
Outer base station, which individually rises, or the outer base station of powder supply rises jointly with base station in the outer base station of adjacent powder supply or/and powder supply can form
For with to the corresponding powder supply region in powdering region.
Further, shaping base station in interior base station and powder supply is identical one in cylindrical body, triangular prism, square or cuboid
Kind, the outer base station of each forming and the outer base station of each powder supply are respectively one-to-one with base station shape in base station in forming and powder supply
Hollow structure.
Further, base station in shaping, the outer base station of each forming, in powder supply base station and the outer base station of each powder supply bottom difference
It is provided at least one driving device for driving it respectively to go up and down.
Further, powder supply platform is two for being divided to column forming table to be arranged in powdering direction two sides.
It further, further include control system, control system includes:
Input unit, for inputting the dimension data of part model to be formed；
Control unit, control unit are connect for receiving user input signal, according to input-signal judging with input unit
And it determines to powdering region and powder supply region, and control with fixed to the corresponding driving dress in powdering region and powder supply region
Set work.
Further, driving device is hydraulic cylinder, the control system further include controlled and corresponded to by control unit it is each
One group of fluid power system is arranged in hydraulic cylinder, and each fluid power system includes:
The number of analog signal output is connect and is converted to the motion parameter data transmitted from control unit with control unit
Word amplifier；
Connect with digital amplifier and be used to receive analog signal to the direction of motion of hydraulic cylinder and hydraulic fluid flow rate into
The proportional reversing valve of row control；
It is arranged in for detecting the displacement sensor of piston rod displacement information on hydraulic cylinder, the signal of displacement sensor is defeated
Outlet is connected with the signal input part of digital amplifier.
Beneficial effects of the present invention: subregion of the invention is gone up and down into form selective laser melting workbench, forming table
Base station and the outer base station of forming are liftable structure in shaping, and are set on the outside of the outer base station of forming simultaneously due to shaping outer base station housing
For radially from least one for being arranged successively setting from inside to outside, in this way, whole forming table (in shaping base station and it is all at
The outer base station of shape) the forming platform an of entirety can be collectively formed, it, can when part is form part (such as ring-shaped work pieces)
According to the moulded dimension of part to be formed need will shape in base station individually decline or by base station outside single forming it is independent under
Drop or the outer base station of forming and the outer base station of adjacent forming or/and the interior base station of forming decline jointly, can be formed for process part at
Shape to powdering region；As to powdering region be as caused by declining, in this way in powdering, powder under the action of scraper only
Fall into in powdering region, form subregion and go up and down forming workbench structure, allow in this way forming table integrally remove formation to
Non-processing region except powdering region no longer covers powder comprehensively, to greatly reduce the demand of powder, improves powder
The service efficiency at end, and reduce the generation of dust in laser melting unit forming storehouse.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is overall structure schematic top plan view of the present invention；
Fig. 2 is working state schematic representation of the present invention when shaping smaller size thin-walled parts；
Fig. 3 is working state schematic representation of the present invention when shaping larger size thin-walled parts；
Fig. 4 fluid power system control principle drawing.
Specific embodiment
Fig. 1 is overall structure schematic top plan view of the present invention, and Fig. 2 is work of the present invention when shaping smaller size thin-walled parts
Make status diagram, Fig. 3 is working state schematic representation of the present invention when shaping larger size thin-walled parts, as shown in the figure: this
The subregion lifting of embodiment at form selective laser melting workbench, including at least for powdering and workpiece sintering forming at
Shape platform 1, forming table 1 shape interior base station and radially from successively housing arranges from inside to outside including shaping interior base station 1-1 and being coated at
At least one being arranged shapes outer base station 1-2, shapes interior base station 1-1 and the outer base station 1-2 of each forming in a manner of liftable
Setting shapes the interior base station 1-1 or outer base station 1-2 of forming and individually declines or shape outer base station 1-2 and the outer base station 1- of adjacent forming
The 2 or/and interior base station 1-1 of forming declines jointly and can be formed for laser sintering (SLS) workpiece to powdering region 2；The present embodiment
Workbench the part in entity can be used, it is possible to use in the thin-walled parts of inner hollow, wherein shape in base station 1-1 and
Shaping outer base station 1-2 is that radially successively housing is arranged, and from-inner-to-outer forms multiplet, and the forming of inner terminal radially
Outer base station 1-2 with shape in base station 1-1, it is adjacent between the outer base station 1-2 of forming between be is close to be arranged, in the present embodiment
In, it shapes outer base station 1-2 and is arranged three, it can also one, two or the integer greater than three certainly, wherein the interior base of forming
The platform 1-1 and outer base station 1-2 of each forming is can oscilaltion setting；When being used in the part of entity, endobasal-body can be passed through
Decline formation jointly with base station 1-2 outside adjacent forming to be formed to powdering region 2 or 1 entire lowering of forming table to powdering region
2, when being used in interior hollow ring-shaped thin-walled part thermal sintering, according to the size dimension needs of 3 model of part to be formed, at
Base station 1-1 can individually decline to form the outer base station 1-2 of powdering region or each forming and individually decline and be formed to powdering region in shape
2, when the larger and thin-walled for shaping part model is thicker, base station 1-2 outside two or more adjacent forming can be passed through
Common decline formed to powdering region 2, certainly, when the overall dimensions of formation of parts model are smaller but thin-walled is thicker, can also lead to
It crosses the outer base station 1-2 of forming that base station 1-1 is adjacent thereto in shaping and declines formation jointly to powdering region 2；In short, according to practical need
It wants, selection shapes interior base station 1-1 and shapes the decline region of outer base station 1-2.
It further include the powder supply that forming table 1 is set on the outside of at least side of powdering direction and is used for powder supply in the present embodiment
Platform 4, powder supply platform 4 include base station 4-1 and being coated in powder supply base station and radially from successively housing arrangement is set from inside to outside in powder supply
The outer base station 4-2 of at least one powder supply for setting, the base station 4-1 and outer base station 4-2 of each powder supply is set in a manner of liftable in powder supply
It sets, the outer base station 4-2 of base station 4-1 or powder supply individually rises or the outer base station 4-2 of the powder supply and outer base station 4-2 of adjacent powder supply in powder supply
Or/and in powder supply base station 4-1 rise jointly can be formed for to the corresponding powder supply region 5 in powdering region 2；With forming table
1 principle is similar, and base station 4-1 and the outer base station 4-2 of powder supply equally constitute radially the multiple knot that successively housing is arranged in powder supply
Structure, and base station 4-1 in the outer base station 4-2 of powder supply and powder supply of inner terminal, it is adjacent between the outer base station 4-2 of powder supply between be tight
Be sticked and set, and in powder supply the outer base station 4-2 of base station 4-1 and powder supply be can oscilaltion setting, wherein in the present embodiment, supply
The outer base station 4-2 of powder is arranged three, certainly, can also one, two or the integer greater than three；Also according to parts to be processed
Model size, base station 4-1 and the outer base station 4-2 of powder supply carry out selection and rise to form different size and adapt to difference in powder supply
The powder supply region 5 of size, and in the actual processing process, powder supply region 5 forms one-to-one relationship with to powdering region 2.
In the present embodiment, shaping base station 4-1 in interior base station 1-1 and powder supply is cylindrical body, triangular prism, square or cuboid
In identical one kind, the outer base station 1-2 of each forming and the outer base station 4-2 of each powder supply be respectively and shape in base station 1-1 and powder supply
The interior one-to-one hollow structure of base station 4-1 shape；In the present embodiment, shaping base station 4-1 in interior base station 1-1 and powder supply is
Solid cylindrical structure, wherein the diameter of base station 1-1 is less than or equal to base station 4-1 diameter dimension in powder supply in shaping,
Shape outer base station 1-2 and the outer base station 4-2 of powder supply be the hollow structure of annular, base station 4-1 in the interior base station 1-1 of forming, powder supply, at
The oscilaltion of the outer base station 1-2 of shape and the outer base station 4-2 of powder supply are guiding with adjacent base station.
In the present embodiment, shape in base station 1-1, the outer base station 1-2 of each forming, in powder supply outside base station 4-1 and each powder supply
The bottom of base station 4-2 is respectively arranged at least one driving device 6 for driving it respectively to go up and down；Driving device 6 is elongation
Hydraulic cylinder corresponds to base station 4-1 in the interior base station 1-1 of forming and powder supply and an elongation hydraulic cylinder, the corresponding outer base of each forming is respectively arranged
Platform 1-2 and the outer base station 4-2 of powder supply are respectively set two and radially symmetrically extend hydraulic cylinder.
In the present embodiment, powder supply platform 4 is two for being divided to column forming table 1 to be arranged in powdering direction two sides；I.e. in forming table 1
A powder supply platform 4 is respectively arranged in two sides, scraper 7 can be used to scrape powder in powdering region 2 in two sides to facilitate.
It further include control system in the present embodiment, control system includes:
Input unit 9, for inputting the dimension data of part model to be formed；Input unit 9 can for industrial computer or its
He is used to receive the input unit of user input data；
Control unit 10, control unit connect for receiving user input signal with input unit 9, are sentenced according to input signal
Break and determine to powdering region 2 and powder supply region 5, and control with it is fixed corresponding to powdering region 2 and powder supply region 5
Driving device 6 works；Control unit is programmable controller, usually single-chip microcontroller, and control unit receives the input data of user
And it is converted into the kinematic parameter of corresponding driving device, specific conversion process is achieved by the prior art, and is not related to this herein
Partial improvement.
In the present embodiment, driving device is hydraulic cylinder, and the control system further includes being controlled and being corresponded to by control unit
One group of fluid power system is arranged in each hydraulic cylinder, and each fluid power system includes:
The number of analog signal output is connect and is converted to the motion parameter data transmitted from control unit with control unit
Word amplifier 11；
Connect with digital amplifier and be used to receive analog signal to the direction of motion of hydraulic cylinder and hydraulic fluid flow rate into
The proportional reversing valve 12 of row control；
It is arranged in for detecting the displacement sensor 13 of piston rod displacement information on hydraulic cylinder, institute's displacement sensors
Signal output end is connected with the signal input part of the digital amplifier；
Wherein, each fluid power system all includes digital amplifier, displacement sensor and proportional reversing valve, and number is put
Big device is integrated structure, and each fluid power system carries out data connection by respective digital amplifier and control unit,
Input unit 9 issues instruction according to the model data that user inputs, and control unit passes through data processing, will control each hydraulic drive
The kinematic parameter of dynamic system sends the digital amplifier of corresponding fluid power system to, and digital amplifier joins the movement received
Number data carry out data conversion, corresponding analog signal are conveyed to proportional reversing valve, proportional reversing valve carries out hydraulic cylinder
The control in direction and hydraulic fluid flow rate, displacement sensor carry out the location information of piston rod to feed back to digital amplifier, thus
Form closed-loop control.
For processing circular ring shape thin-walled parts, be illustrated to the working principle of workbench of the invention: workbench is
Multiple circular ring shape self-powered platform, powder supply platform 4 install powder additional, and forming table 1 is formed in formation of parts under the action of laser galvanometer 8,
In process, powder supply platform 4 moves upwards powder supply, and forming table 1 declines a thickness, and scraper 7 spreads into powder from powder supply platform 4
In forming table 1, the lifting of forming table 1 and powder supply platform 4 by Driven by Hydraulic Cylinder, movable workbench guiding by each circular ring shape base station it
Between cooperation.
When processing the Circular Thin part of different sizes, 8 system of laser galvanometer can scan forming table 1 from forming
Base station 1-1 shapes the entire scope of outer base station 1-2 to most external, when the geomery of processing circular ring shape thin-walled parts is in forming
When in base station 1-1 regional scope, before processing, the Driven by Hydraulic Cylinder powder supply of the setting corresponding with base station 4-1 in powder supply of powder supply platform 4
Powder is installed in interior base station 4-1 decline additional, and after processing starts, the region base station 4-1 rises powder supply in powder supply, and base station 1-1 is at it in forming
Decline a thickness under the driving for the hydraulic cylinder being correspondingly arranged, scraper 7 is mobile, and the powder in the region base station 4-1 in powder supply is sprawled
To in shaping in the region of base station 1-1,8 Systematic selection of laser galvanometer irradiation sintering powder has been sintered after one layer, scraper 7
It resets, continues to scrape powder, repeatedly, shape thin-wall part entity；When the geomery of processing thin-walled parts is at one of forming table 1
When shaping in outer base station 1-2 regional scope, the powder supply corresponding with outer base station 1-2 regional location is shaped of powder supply platform 4 before processing
Powder is installed in outer base station 4-2 decline additional, and after processing starts, the outer region base station 4-2 of the powder supply declined rises powder supply, shapes outer base station
1-2 one thickness of synchronous decline, scraper 7 is mobile, and the powder in the region base station 4-2 outside powder supply is spread into the outer base station 1-2's of forming
Declining in region, 8 Systematic selection of laser galvanometer irradiation sintering powder has been sintered after one layer, and scraper 7 resets, continue to scrape powder,
Repeatedly, thin-wall part entity is shaped.Similarly, remaining is shaped outside outer base station 1-2 and the outer base station 1-2 of forming and adjacent forming
Base station 1-2 or/and the principle for shaping interior base station 1-1 drape forming workpiece are same as described above.
Subregion lifting through the invention can be according to thin-walled parts to be formed at form selective laser melting workbench
Size, subregion goes up and down powder supply platform 4, subregion goes up and down forming table 1, to form the part to be formed 3 for being applicable in different sizes,
The demand of powder is greatly reduced, and improves powder service efficiency.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the 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 scope of the claims of invention.
Claims (4)
1. a kind of subregion lifting is at form selective laser melting workbench, it is characterised in that: include at least for powdering and work
The forming table of part thermal sintering, the forming table shape interior base station and radially from from inside to outside including shaping interior base station and being coated at
Successively housing be arranged at least one shape outer base station, in the forming base station and each forming outside base station with can
The mode of lifting is arranged, in the forming the outer base station of base station or the forming individually decline or shapes outer base station with it is adjacent at
Base station declines jointly and can be formed for laser sintering (SLS) workpiece to powdering region in the outer base station of shape or/and forming；
It further include the powder supply platform that forming table is set on the outside of at least side of powdering direction and is used for powder supply, the powder supply platform includes
In powder supply base station and be coated in powder supply base station and radially from least one powder supply that successively housing is arranged from inside to outside outside
Base station, base station and the outer base station of each powder supply are arranged in a manner of liftable in the powder supply, in the powder supply base station or
The outer base station of the powder supply individually rises or the outer base station of powder supply rises jointly with base station in the outer base station of adjacent powder supply or/and powder supply
Can be formed for to the corresponding powder supply region in powdering region；
Base station is cylindrical body in base station and the powder supply in the forming, outside the outer base station of each forming and each powder supply
Base station is respectively and shapes the one-to-one hollow structure of base station shape in interior base station and powder supply；
Base station in the forming, the outer base station of each forming, in the powder supply base station and the outer base station of each powder supply bottom
Portion is respectively arranged at least one driving device for driving it respectively to go up and down.
2. subregion lifting according to claim 1 is at form selective laser melting workbench, it is characterised in that: the confession
Powder platform is two for being divided to the column forming table to be arranged in powdering direction two sides.
3. subregion lifting according to claim 2 is at form selective laser melting workbench, it is characterised in that: further include
Control system, the control system include:
Input unit, for inputting the dimension data of part model to be formed；
Control unit, control unit are connect for receiving user input signal with input unit, according to input-signal judging and true
It is fixed to powdering region and powder supply region, and control with fixed to the corresponding driving device work in powdering region and powder supply region
Make.
4. subregion lifting according to claim 3 is at form selective laser melting workbench, it is characterised in that: the drive
Dynamic device is hydraulic cylinder, and the control system further includes controlling and corresponding to each hydraulic cylinder by control unit to be arranged one group
Fluid power system, each fluid power system include:
It is connect with control unit and puts the number that the motion parameter data transmitted from control unit is converted to analog signal output
Big device；
It is connect with digital amplifier and is used to receive analog signal and the direction of motion and hydraulic fluid flow rate of hydraulic cylinder are controlled
The proportional reversing valve of system；
It is arranged in for detecting the displacement sensor of piston rod displacement information on hydraulic cylinder, the signal of institute's displacement sensors is defeated
Outlet is connected with the signal input part of the digital amplifier.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669903.2A CN107262717B (en) | 2017-08-08 | 2017-08-08 | Subregion is gone up and down into form selective laser melting workbench |
| PCT/CN2017/108084 WO2019029022A1 (en) | 2017-08-08 | 2017-10-27 | Partitioned lifting forming type selective laser melting workbench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669903.2A CN107262717B (en) | 2017-08-08 | 2017-08-08 | Subregion is gone up and down into form selective laser melting workbench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107262717A CN107262717A (en) | 2017-10-20 |
| CN107262717B true CN107262717B (en) | 2019-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710669903.2A Active CN107262717B (en) | 2017-08-08 | 2017-08-08 | Subregion is gone up and down into form selective laser melting workbench |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107262717B (en) |
| WO (1) | WO2019029022A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111141391A (en) * | 2019-12-25 | 2020-05-12 | 西安交通大学 | Molten pool laser synchronous following temperature measuring device and method for SLM forming process |
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| WO2019029022A1 (en) | 2019-02-14 |
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