CN108637253A - A kind of 3D printing system and method - Google Patents
A kind of 3D printing system and method Download PDFInfo
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- CN108637253A CN108637253A CN201810629331.XA CN201810629331A CN108637253A CN 108637253 A CN108637253 A CN 108637253A CN 201810629331 A CN201810629331 A CN 201810629331A CN 108637253 A CN108637253 A CN 108637253A
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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
- B22F12/70—Gas flow means
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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
- B22F10/70—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
- B22F12/90—Means for process control, e.g. cameras or sensors
-
- 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
- B22F10/20—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
- B22F12/22—Driving means
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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
- B22F12/40—Radiation means
- B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
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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
- B22F12/80—Plants, production lines or modules
- B22F12/88—Handling of additively manufactured products, e.g. by robots
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
Abstract
The present invention relates to 3D printing fields, and in particular to a kind of 3D printing system and method.Processor generates increasing material path and subtracts material path, dusty material is repeatedly paved into synusia by powdering component in powder cylinder, after being paved into synusia every time, the laser that dynamic focusing unit successively adjusts laser directive galvanometer is large spot and small light spot, large spot laser preheats for synusia, small light spot laser is processed according to material path is increased for synusia, also, milling component is processed according to material path is subtracted for synusia.Before carrying out 3D printing, it is first synusia heating with large spot laser, thermal stress is avoided to make synusia that buckling deformation occur.
Description
Technical field
The present invention relates to 3D printing fields, and in particular to a kind of 3D printing system and method.
Background technology
With the rapid development of science and technology, the research of 3D printing technique is also gradually goed deep into, and various 3D printing systems also gradually go out
Now in our work and life.When carrying out 3D printing, normal open over-subtraction material system is realized to coordinate, and increase and decrease material is compound to be added
Work system is a kind of hybrid system that increasing material manufacturing is integrated with material processing is subtracted so that two kinds of systems have complementary advantages.
Powdering formula laser printing is often used in 3D printing at present, although which can form the parts of arbitrarily complicated structure,
But some defects are easy tod produce in print procedure, for example, leading to powdering because thermal stress makes synusia that buckling deformation occur before printing
Effect is undesirable, or even because buckling deformation causes printing that can not carry out；Or increases material and generate stomata, crackle, slag inclusion, group in the process
It knits the problems such as loose, and is not detected and, printing is caused to fail, reduce forming efficiency and cost of idleness；Also or subtract material
In the process, if using high-speed milling technology, although higher machining accuracy can be reached, have again it can be difficult to processing is internal
The parts of miscellaneous structure, especially for complex-shaped surface mould, retinue runner, deep hole deep trouth etc..
In view of the foregoing drawbacks, a kind of 3D printing system and method are designed, is always those skilled in the art's primary study
One of the problem of.
Invention content
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, provides a kind of 3D printing system
And method, solve the problems, such as that product is easy defective during 3D printing.
To solve the technical problem, the present invention provides a kind of 3D printing system, the 3D printing system include seal cavity,
Processor, powder cylinder, laser module, powdering component and milling component, the powder cylinder, powdering component and milling component are set to seal chamber
The inside of body, the laser module include laser, dynamic focusing unit and galvanometer；Wherein, the processor, which generates, increases material
Path and subtracting material path, dusty material is repeatedly paved into synusia by the powdering component in powder cylinder, after being paved into synusia every time, institute
It is large spot and small light spot to state dynamic focusing unit and successively adjust the laser of laser directive galvanometer, and large spot laser is that synusia is pre-
Heat, small light spot laser are processed according to material path is increased for synusia, also, the milling component is processed according to material path is subtracted for synusia.
Wherein, preferred version is：The 3D printing system further includes being examined for detecting synusia synusia whether up to standard in real time
Component is surveyed, the synusia detection components include transmitter unit, receiving unit and judging unit, and the transmitter unit transmitting laser arrives
The laser received is sent to judging unit, the judging unit by synusia, laser reflection to receiving unit, the receiving unit
Judge whether synusia is up to standard；If up to standard, continue the processing of synusia；If not up to standard, the judging unit, which regenerates, increases material path
And/or subtracting material path, the laser module adds according to material path is subtracted for synusia according to increasing material path and/or the milling component
Work.
Wherein, preferred version is：The powder cylinder includes set on the riser of periphery and set on bottom and can be above and below riser
Mobile bottom plate, the 3D printing system further include lifting assembly, and the lifting assembly includes the company for pushing powder cylinder to move
Extension bar and the servo motor moved for controlling connecting rod, the connecting rod are connect with bottom plate, and the servo motor setting exists
In connecting rod；After each synusia completion of processing, the Serve Motor Control connecting rod drives bottom plate to decline and synusia height phase one
The distance of cause.
Wherein, preferred version is：The 3D printing system further includes gas transmission component, and the gas transmission component includes for providing
Gas supply mechanism, gas transport mechanism and the gas purification mechanism of inert gas, the gas purification mechanism are set to gas transport
In mechanism, for the gas supply mechanism by inert gas delivery to seal cavity, the inert gas moves to gas transport mechanism
Inside simultaneously recycles, and the gas purification mechanism is that inert gas purge filters.
Wherein, preferred version is：The gas transmission component further includes the vacuum pump for extracting seal cavity inner air, institute
Vacuum pump is stated in seal cavity, alternatively, the pump machine of the vacuum pump is located at outside seal cavity, the exhaust tube of the vacuum pump
It is extended into seal cavity from pump machine.
Wherein, preferred version is：The 3D printing system further includes environment measuring component, and the environment measuring component includes
At least one of gas sensor, pressure sensor, temperature sensor and humidity sensor.
Wherein, preferred version is：The powdering component includes powder supplying mechanism and powdering transmission mechanism, and the powder supplying mechanism will
Dusty material is transferred on powdering transmission mechanism, and the powdering transmission mechanism rolls on bottom plate, and dusty material is layered on bottom
On plate.
Wherein, preferred version is：The milling component includes three axis mobile mechanisms and milling cutter, and the milling cutter is arranged in three axis
In mobile mechanism, three axis mobile mechanism drives milling cutter to be moved along three axis.
Wherein, preferred version is：The milling component further includes placing there are many tool magazine of milling cutter and for detecting milling
The Tool monitoring mechanism of knife length, the tool magazine replace milling cutter according to material path is subtracted, and milling is replaced in the Tool monitoring mechanism detection
The correctness of knife length.
Wherein, preferred version is：The 3D printing system further includes at least one for collecting the useless of waste-powder material
Expect that collecting box, the scrap collecting tank are set in seal cavity, alternatively, the scrap collecting tank is set to outside seal cavity, and leads to
A delivery pipe is crossed to extend into seal cavity.
The present invention also provides a kind of 3D printing method, the 3D printing method is used for 3D printing system as described above, tool
Body includes the following steps：
Step 1 generates increasing material path and subtracts material path；
Dusty material is paved into synusia by step 2；
Step 3, transmitting large spot laser preheat for synusia, add for synusia further according to material outlet openings small light spot laser is increased
Work；
Step 4, basis subtract material path and are processed for synusia；
Step 5 repeats step 2-4, until printing complete product.
The beneficial effects of the present invention are, compared with prior art, the present invention by design a kind of 3D printing system and
Method is first synusia heating with large spot laser, thermal stress is avoided to make synusia that buckling deformation occur before carrying out 3D printing；Separately
Outside, the synusia after each layer of processing is detected, if synusia has flaw, first rejects synusia, then regenerated synusia and add
Work prevents the product finally printed up to standard, improves forming efficiency；Also, milling cutter movement is driven by three axis mobile mechanisms,
Machining accuracy can be improved to being processed inside the parts of labyrinth.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the schematic diagram of 3D printing system of the present invention；
Fig. 2 is the flow diagram of 3D printing method of the present invention.
Specific implementation mode
In conjunction with attached drawing, elaborate to presently preferred embodiments of the present invention.
As shown in Figure 1, the present invention provides a kind of preferred embodiment of 3D printing system.
Specifically, a kind of 3D printing system, the 3D printing system include seal cavity 1, processor 2, powder cylinder 3, laser
Component, powdering component and milling component, the powder cylinder 3, powdering component and milling component are set to the inside of seal cavity 1, described
Processor 2 and laser module are located at the outside of seal cavity 1, and the laser module includes laser 41, dynamic focusing unit 42
And galvanometer 43, the laser 41 launch laser, and after adjusting spot size by dynamic focusing unit 42, it is mapped to galvanometer
On 43,43 reflection laser of the galvanometer to the inside of seal cavity 1.
Wherein, the processor 2 has the image information of the product 100 of pre-generatmg, and is generated according to image information and increase material
Path and subtracting material path, dusty material is repeatedly paved into synusia by the powdering component in powder cylinder 3, after being paved into synusia every time,
The laser that the dynamic focusing unit 42 successively adjusts 41 directive galvanometer 43 of laser is large spot and small light spot, large spot laser
It is preheated for synusia, small light spot laser is synusia processing according to material path is increased, also, the milling component is according to subtracting material path to layer
It is processed with inner cavity outside piece, in-profile is printed, to synusia further retrofit.In more detail, the increasing
Material path is divided into mulitpath according to the thickness of pre-generatmg product 100 and the thickness of synusia, and each path is for printing from level to level
Piece, similarly, the material path that subtracts also are divided into mulitpath, every road according to the thickness of the thickness of pre-generatmg product 100 and synusia
Diameter is for printing processing piece from level to level；Dusty material is paved into first layer synusia by the powdering component on powder cylinder 3, then dynamic
The laser that focusing unit 42 adjusts 41 directive galvanometer 43 of laser is large spot, and laser directive synusia again heats, thereafter for synusia
The laser that dynamic focusing unit 42 adjusts 41 directive galvanometer 43 of laser is small light spot, and laser increases material path further according to first and penetrates
To synusia, is processed for synusia, ensured the stability of laminate quality；Then, the milling component subtracts material path according to first
Again profile is outwardly and inwardly milled out for synusia；After completing the printing processing of first layer synusia, then carry out down beating for piece from level to level
Print processing, repetitive operation finally by manipulator or manually take out product from powder cylinder 3 again until the printing of product 100 is completed
100.Before carrying out 3D printing, it is first synusia heating with large spot laser, avoids thermal stress from making synusia that buckling deformation occur, ensure
Powdering component can accurate powdering, to ensure the Forming Quality of product 100.
Further, the 3D printing system further includes the synusia detection group whether up to standard for detecting the synusia after processing
Part 7, the synusia detection components 7 are set to the inside of seal cavity 1, and the synusia detection components 7 include transmitter unit, receive list
Member and judging unit, the transmitter unit emit laser to synusia, and laser reflection to receiving unit, the receiving unit will reception
To laser be sent to judging unit, the judging unit judges whether synusia up to standard；If up to standard, continue the processing of synusia；If
Not up to standard, the judging unit, which regenerates, increases material path, and the laser module is synusia according to the increasing material path regenerated
Processing, after laser irradiation, unprocessed position before supplement；Alternatively, the judging unit, which regenerates, subtracts material path, institute
It states milling component to be processed for synusia according to the material path that subtracts regenerated, rejects the position that should not be processed before；Also or, institute
It states judging unit and regenerates and increase material path and subtract material path, the laser module is synusia according to the increasing material path regenerated
Processing, the milling component are processed further according to the material path that subtracts regenerated for synusia.Three's mode takes one, the synusia detection
Component 7 is scanned detection to synusia always, can be timely if finding not according to increasing material path or subtracting material path and be processed
It regenerates to increase material path or subtract material path and be processed again for synusia, ensure that the synusia finally processed complies with standard, improve
Yield rate will not make product become defect ware.
Thereafter, when for wherein piece completion of processing, the synusia detection components 7 continue as synusia and are detected from level to level, if
Detect that the not remediable defect such as stomata, crackle occurs in synusia, the milling component picks defective synusia for direct one layer
It removes, the processor 2 regenerates again the identical increasing material path of piece and subtracts material path layer by layer with this, the increasing material path regenerated
With subtract material path and the increasing material path of pre-generatmg synusia is consistent with material path is subtracted before, and be separately sent to powdering component and milling
Component is cut, piece from level to level is regenerated, original defect synusia is substituted, to ensure that product quality.Alternatively, the processor
2 material path and subtract material path without regenerating to increase, before directly using generated increasings material path with subtract material path, then again
Processing synusia also may be used.
Certainly, the judging unit can also be exactly the processor 2, and the processor 2 receives the image information of synusia
Afterwards, can also be judged.
More specifically, the powder cylinder 3 include set on periphery riser 31 and can move down set on bottom and on riser 31
Dynamic bottom plate 32, the 3D printing system further include lifting assembly, and the lifting assembly includes the company for pushing powder cylinder 3 to move
Extension bar 81 and the servo motor 82 moved for controlling connecting rod 81, the connecting rod 81 are connect with bottom plate 32, the servo
Motor 82 is arranged in connecting rod 81, is moved up and down for controlling connecting rod 81；After each synusia completion of processing, the servo
Motor 82 controls connecting rod 81 and bottom plate 32 is driven to decline at a distance from consistent with synusia height, so that piece is beaten from level to level under
Print processing.
Still further, the 3D printing system further includes gas transmission component, the gas transmission component includes for providing inertia
Gas supply mechanism 91, gas transport mechanism 92 and the gas purification mechanism 93 of gas, the gas purification mechanism 93 are set to gas
In transport establishment 92, the gas supply mechanism 91 generates inert gas, and by inert gas delivery to seal cavity 1, makes sealing
The inside of cavity 1 is in atmosphere of inert gases, reduces harmful effect of the factors such as water, oxygen molecule to printing processing.Work as indifferent gas
When body is full of 1 inside of seal cavity, the gas supply mechanism 91 stops providing inert gas for the inside of seal cavity 1, described lazy
Property gas moved freely in seal cavity 1, the gas transport mechanism 92 includes two ports, and the inert gas can pass through
Port moves to 92 inside of gas transport mechanism and recycles, and the gas purification mechanism 93 is the inert gas purge mistake passed through
Filter, prevents inert gas from being influenced by dusty material.
Wherein, the gas transmission component further includes the vacuum pump for extracting 1 inner air of seal cavity, and the vacuum pump is set
In in seal cavity 1, alternatively, the pump machine of the vacuum pump is located at outside seal cavity 1, the exhaust tube of the vacuum pump prolongs from pump machine
It puts in seal cavity 1；Before 3D printing progress, start vacuum pump, is taken out the air inside seal cavity 1 by exhaust tube
It walks, when to ensure follow-up offer inert gas, 1 inside of seal cavity only has inert gas, and without other impurities air.
In the present embodiment, the 3D printing system further includes environment measuring component 10, and the environment measuring component 10 wraps
Include at least one of gas sensor, pressure sensor, temperature sensor and humidity sensor.The environment measuring component 10
Moment detects the ambient conditions inside seal cavity 1, and controls gas transmission component addition inert gas according to ambient conditions or stop
It only supplies, to ensure that the 1 inside moment of seal cavity is in an environment for being appropriate for 3D printing.
More specifically, the powdering component includes powder supplying mechanism 51 and powdering transmission mechanism 52, the powder supplying mechanism 51 will
Dusty material is transferred on powdering transmission mechanism 52, and the powdering transmission mechanism 52 rolls on bottom plate 32, and by dusty material
It is layered on bottom plate 32, forms the synusia of suitable thickness；Originally layer by layer after piece completion of processing, the lifting assembly drives under bottom plate 32
Drop, the powdering transmission mechanism 52 rolls on bottom plate 32 again, piece from level to level under formation.
Again specifically, the milling component includes three axis mobile mechanisms 61 and milling cutter 62, and the milling cutter 62 is arranged in three axis
In mobile mechanism 61, three axis mobile mechanism 61 drives milling cutter 62 to be moved along three axis, and the milling cutter 62 is in the inside of synusia
Mill out preset profile.The milling component further includes placing there are many tool magazine 63 of milling cutter 62 and for detecting milling cutter 62
The Tool monitoring mechanism 64 of length, the tool magazine 63 replace milling cutter 62 according to material path is subtracted, and the Tool monitoring mechanism 64 detects
Whether the length for replacing milling cutter 62 is correct.Milling cutter 62 is driven to move by three axis mobile mechanisms 61, it can be to zero of labyrinth
It is processed inside part, and suitable milling cutter 62 can be replaced at any time, by obstructed milling cutter 62 to the inside and outside of synusia
Profile carries out retrofit, improves machining accuracy, is particularly suitable for solving the production of some complex-shaped surface moulds, deep hole deep trouth, profile-followed runner
Product 100.
Further, the 3D printing system further includes at least one garbage collection for collecting waste-powder material
Case 11, the scrap collecting tank 11 are set in seal cavity 1, alternatively, the scrap collecting tank 11 is set to outside seal cavity 1, and
It is extended into seal cavity 1 by a delivery pipe, dusty material is easy the powder material being scattered everywhere, and discarded in process
Material can be fallen in scrap collecting tank 11, collected by scrap collecting tank 11, realized the recycling of dusty material.
As shown in Fig. 2, the present invention also provides a kind of preferred embodiments of 3D printing method.
Specifically, a kind of 3D printing method, the 3D printing method are used for 3D printing system as described above, specifically include
Following steps：
Step 1 generates increasing material path and subtracts material path；
Dusty material is paved into synusia by step 2；
Step 3, transmitting large spot laser preheat for synusia, add for synusia further according to material outlet openings small light spot laser is increased
Work；
Step 4, basis subtract material path and are processed for synusia；
Step 5 repeats step 2-4, until printing complete product.
In detail, the increasing material path is divided into a plurality of road according to the thickness of pre-generatmg product 100 and the thickness of synusia
Diameter, each path are similarly, described to subtract material path also according to the thickness and synusia of pre-generatmg product 100 for printing piece from level to level
Thickness be divided into mulitpath, each path is for printing piece from level to level；The powdering component is by dusty material on 3 upper berth of powder cylinder
At first layer synusia, the laser that subsequent dynamic focusing unit 42 adjusts 41 directive galvanometer 43 of laser is large spot, and laser is penetrated again
It to synusia, is heated for synusia, the laser that dynamic focusing unit 42 adjusts 41 directive galvanometer 43 of laser thereafter is small light spot, laser
Increase material path directive synusia further according to first, is processed for synusia, ensured the stability of laminate quality；Then, the milling
Component subtracts material path according to first and outwardly and inwardly mills out profile again for synusia；Complete the printing processing of first layer synusia
Afterwards, then the printing processing of piece from level to level, repetitive operation are carried out down, until the printing of product 100 is completed, finally again by manipulator or
Person manually takes out product 100 from powder cylinder 3.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
Any modification made all within the spirits and principles of the present invention, equivalent replacement, improve etc., it should be included in the guarantor of the present invention
It protects in range.
Claims (11)
1. a kind of 3D printing system, it is characterised in that：The 3D printing system includes seal cavity, processor, powder cylinder, laser group
Part, powdering component and milling component, the powder cylinder, powdering component and milling component are set to the inside of seal cavity, the laser
Component includes laser, dynamic focusing unit and galvanometer；Wherein,
The processor, which generates, to be increased material path and subtracts material path, and dusty material is repeatedly paved into layer by the powdering component in powder cylinder
Piece, after being paved into synusia every time, the laser of the dynamic focusing unit successively adjustment laser directive galvanometer is large spot and small
Hot spot, large spot laser preheat for synusia, and small light spot laser is processed according to material path is increased for synusia, also, the milling component
It is processed for synusia according to material path is subtracted.
2. 3D printing system according to claim 1, it is characterised in that：The 3D printing system further includes for examining in real time
Survey synusia synusia detection components whether up to standard, the synusia detection components include transmitter unit, receiving unit and judging unit,
Transmitter unit transmitting laser arrives synusia, laser reflection to receiving unit, and the receiving unit is by the laser received transmission
To judging unit, the judging unit judges whether synusia is up to standard；If up to standard, continue the processing of synusia；It is described to sentence if not up to standard
Disconnected unit, which regenerates, to be increased material path and/or subtracts material path, and the laser module is according to increasing material path and/or the milling component
It is processed for synusia according to material path is subtracted.
3. 3D printing system according to claim 2, it is characterised in that：The powder cylinder include set on periphery riser and
Set on bottom and can further include lifting assembly along the bottom plate that riser moves up and down, the 3D printing system, the lifting assembly packet
It includes the connecting rod for pushing powder cylinder to move and the servo motor for controlling connecting rod movement, the connecting rod connects with bottom plate
It connects, the servo motor is arranged in connecting rod；After each synusia completion of processing, the Serve Motor Control connecting rod drives bottom
Plate declines at a distance from consistent with synusia height.
4. 3D printing system according to claim 1, it is characterised in that：The 3D printing system further includes gas transmission component,
The gas transmission component include for providing the gas supply mechanism of inert gas, gas transport mechanism and gas purification mechanism, it is described
Gas purification mechanism is set in gas transport mechanism, and the gas supply mechanism is described lazy by inert gas delivery to seal cavity
Property gas motion it is in-house to gas transport and recycle, the gas purification mechanism is inert gas purge filtering.
5. 3D printing system according to claim 4, it is characterised in that：The gas transmission component further includes for extracting sealing
The vacuum pump of inside cavity air, the vacuum pump is set in seal cavity, alternatively, the pump machine of the vacuum pump is located at seal chamber
In vitro, the exhaust tube of the vacuum pump is extended into from pump machine in seal cavity.
6. 3D printing system according to claim 1, it is characterised in that：The 3D printing system further includes environment measuring group
Part, the environment measuring component include at least one in gas sensor, pressure sensor, temperature sensor and humidity sensor
Kind.
7. 3D printing system according to claim 3, it is characterised in that：The powdering component includes powder supplying mechanism and powdering
Dusty material is transferred on powdering transmission mechanism by transmission mechanism, the powder supplying mechanism, and the powdering transmission mechanism is on bottom plate
It rolls, and dusty material is layered on bottom plate.
8. 3D printing system according to claim 7, it is characterised in that：The milling component include three axis mobile mechanisms and
Milling cutter, the milling cutter are arranged in three axis mobile mechanisms, and three axis mobile mechanism drives milling cutter to be moved along three axis.
9. 3D printing system according to claim 8, it is characterised in that：The milling component further includes that there are many millings for placement
The tool magazine of knife and Tool monitoring mechanism for detecting milling cutter length, the tool magazine replaces milling cutter according to material path is subtracted, described
The correctness of milling cutter length is replaced in the detection of Tool monitoring mechanism.
10. 3D printing system according to claim 1, it is characterised in that：The 3D printing system further includes at least one
Scrap collecting tank for collecting waste-powder material, the scrap collecting tank are set in seal cavity, alternatively, the waste material is received
Header is set to outside seal cavity, and is extended into seal cavity by a delivery pipe.
11. a kind of 3D printing method, which is characterized in that the 3D printing method is for the 3D as described in claim 1 to 9 is any
Print system specifically includes following steps：
Step 1 generates increasing material path and subtracts material path；
Dusty material is paved into synusia by step 2；
Step 3, transmitting large spot laser preheat for synusia, are processed for synusia further according to material outlet openings small light spot laser is increased；
Step 4, basis subtract material path and are processed for synusia；
Step 5 repeats step 2-4, until printing complete product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| WO2020220242A1 (en) * | 2019-04-30 | 2020-11-05 | Siemens Aktiengesellschaft | Laminated iron core and manufacturing method therefor |
| CN113997568A (en) * | 2021-10-28 | 2022-02-01 | 广西大学 | Airbag type substrate device for 3D printing of powder bed and using method thereof |
| CN114786847A (en) * | 2019-12-12 | 2022-07-22 | 瑞利泽尔有限公司 | Active air conditioning in SLM process |
| CN115138970A (en) * | 2022-08-08 | 2022-10-04 | 大同新研氢能源科技有限公司 | Welding method of fuel cell bipolar plate and fuel cell bipolar plate |
| CN115502417A (en) * | 2021-12-30 | 2022-12-23 | 北京航空航天大学 | Vacuum additive manufacturing device and method |
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Application publication date: 20181012 |