CN105904727A - DLP-based photocuring 3D printing forming method, system and device - Google Patents
DLP-based photocuring 3D printing forming method, system and device Download PDFInfo
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- CN105904727A CN105904727A CN201610240624.XA CN201610240624A CN105904727A CN 105904727 A CN105904727 A CN 105904727A CN 201610240624 A CN201610240624 A CN 201610240624A CN 105904727 A CN105904727 A CN 105904727A
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- dlp
- photocuring
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- dimensional section
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Classifications
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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
- B33Y10/00—Processes of additive manufacturing
-
- 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
Abstract
A DLP-based photocuring 3D printing forming method, a system and a device are disclosed. The method includes slicing a 3D physical model of a part to be printed to obtain plane data of all two-dimensional cross sections of the model; controlling a DLP projection system, by a computer control system, to move along a straight line on a work surface of a resin tank in continuous uniform acceleration, constant-speed and uniform speed reduction manners; subjecting the plane data of all the two-dimensional cross sections of the model to electrical signal conversion by the computer control system during moving to obtain corresponding pattern information of all the two-dimensional cross sections in the DLP projection system; and repeating the above mentioned steps until all the two-dimensional cross sections of the model are formed through radiation. A DLP projection technique and a photocuring forming technique are combined, thus reducing the forming time, and improving forming precision of parts. In addition, the method, the system and the device are not influenced by the size of the processed part, and a processing and manufacturing cost is low.
Description
Technical field
The present invention relates to increase material and manufacture field, be specifically related to photocuring 3D printing shaping method based on DLP, system and set
Standby.
Background technology
3D printing technique, is also referred to as increased material manufacturing technology, is realized by the process of automatic numerical control successively buildup of material
The printing of threedimensional model.For traditional process technology, 3D printing technique need not make separately mould, directly processes
Go out finished product.And traditional mechanical can be overcome to process the special construction obstacle that cannot realize, it is possible to achieve arbitrarily complicated structural portion
The simplification of part produces, can automatically, directly, the most just design philosophy, from cad model, is converted into and has certain function
Model or device.
At present, 3D printing technique can be divided into according to forming principle: fusion sediment technology FDM, selective laser sintering molding
Technology SLS, photocurable liquid resin constituency curing molding technology SLA etc..Wherein SLA is then by laser scanning curing photosensitive resin
Molding, the section of each layer of solidification is to be obtained by the three-dimensional CAD model software hierarchy of part, until it is real to finally obtain photosensitive resin
Body Model.But, zonule can only be scanned owing to this SLA rapid prototyping & manufacturing technology all also exists, by point to line, again by line to
The process in face, manufacturing time length is its defect.
DLP projection imaging technology is to use digital micromirror elements (Digital Micromirror Device, DMD) control
Make what the reflection to light realized.Digital micromirror elements can be considered a minute surface.This face mirror is by hundreds thousand of or even millions of
Micro mirror is formed.Each micro mirror represents a pixel, and image is just made up of these pixels.Each micro mirror can independently be subject to
Control to decide whether to reflect light to projection lens.Finally, whole mirror reflects required light beam image.DMD applies at 3D
Having many good qualities in printing, such as it can process the ultraviolet light of below 405nm and not worry suffering damage, but due to
Dmd chip limited resolution but restricts its development, causes the defect that DLP projection imaging technical components compact dimensions is less.Ratio
As, resolution conventional for current DMD is 1130 × 750.But, this resolution can only produce 113 in 3D prints ×
The part of 75mm area, hence it is evident that limit its application.
Summary of the invention
For solving above-mentioned technical problem, we have proposed photocuring 3D printing shaping method based on DLP, system and set
Standby, it projects forming technique based on DLP, can not only realize the quick manufacture of part, reduces molding time, and is ensureing greatly
On the basis of size parts complete machining process, it is also possible to realize continuous DLP projection illumination, improve the effect of part rapid shaping
Rate.
For reaching above-mentioned purpose, technical scheme is as follows:
The present invention proposes a kind of photocuring 3D printing shaping method based on DLP, and it comprises the steps:
1) the 3D physical model of part to be printed is cut into slices, obtain the panel data of all two-dimensional section layers of model；
2) computer control system control DLP projection system on the work surface of resin storage tank along in a rectilinear direction with continuously
Even acceleration, the mode at the uniform velocity and all slowed down move, and during movement, the computer system all two-dimensional sections to model
The panel data of layer carries out signal of telecommunication conversion, obtains the pattern-information of corresponding all two-dimensional section layers in DLP projection system；
The most continuous even acceleration, the mode at the uniform velocity and all slowed down are moved and are so that the arbitrary described two dimension of DLP projection system Continuous irradiation is cut
The irradiation time of the pattern-information of surface layer is default irradiation time；
3) repeat the above steps, until the irradiation molding of all two-dimensional section layers of model.
Preferably, described computer control system control DLP projection system is straight along one on the work surface of resin storage tank
On line direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move, wherein, described computer control system include control mould
Block, in order to control DLP projection system on the work surface of resin storage tank along in a rectilinear direction with continuous even acceleration, at the uniform velocity and
The mode all slowed down moves.
Preferably, described computer control system also includes detection module and irradiates switch module, when computer system is examined
The pattern-information measuring arbitrary two-dimensional section layer opens irradiation switch module startup irradiation, when computer system is not detected by arbitrary
The pattern-information of two-dimensional section layer is opened and is irradiated switch module closedown irradiation.
Preferably, a described rectilinear direction is one or both in X-direction, in Y-direction.
The invention allows for photocuring 3D printing shaping system based on DLP, comprising:
Section module, cuts into slices in order to the 3D physical model of part to be printed, obtains all two-dimensional section layers flat of model
Face data；
Computer control module, controls DLP projection system on the work surface of resin storage tank along one in order to computer control system
In individual rectilinear direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move, and during movement, computer system pair
The panel data of all two-dimensional section layers of model carries out signal of telecommunication conversion, obtains the most all two in DLP projection system
The pattern-information of dimension cross-sectional layers；The most continuous even acceleration, the mode at the uniform velocity and all slowed down move and are so that DLP projection system is continuous
The irradiation time of the pattern-information irradiating arbitrary described two-dimensional section layer is default irradiation time.
Preferably, described computer control system control DLP projection system is straight along one on the work surface of resin storage tank
On line direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move, wherein, described computer control system include control mould
Block, in order to control DLP projection system on the work surface of resin storage tank along in a rectilinear direction with continuous even acceleration, at the uniform velocity and
The mode all slowed down moves.
Preferably, described computer control system also includes detection module and irradiates switch module, when computer system is examined
The pattern-information measuring arbitrary two-dimensional section layer opens irradiation switch module startup irradiation, when computer system is not detected by arbitrary
The pattern-information of two-dimensional section layer is opened and is irradiated switch module closedown irradiation.
Preferably, a described rectilinear direction is one or both in X-direction, in Y-direction.
It addition, also proposed photocuring 3D printing formation unit based on DLP, it includes described above based on DLP
Photocuring 3D printing shaping method and system.
By technique scheme, photocuring 3D printing shaping method based on DLP, system and the equipment that the present invention uses
Control DLP projection system and the work surface of resin storage tank is carried out Continuous irradiation, and make the irradiation time of arbitrary part to be formed with pre-
If irradiation time equal, hence it is evident that decrease molding time, and also improve formed precision, also solve because DLP throws simultaneously
Shadow irradiated area is limited and the size of limit feature, and manufacturing cost also greatly reduces.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of photocuring 3D printing shaping method based on DLP disclosed in this invention；
Fig. 2 is the schematic flow sheet of photocuring 3D printing shaping system based on DLP disclosed in this invention；
Fig. 3 is the structural representation of the photocuring 3D printing formation unit based on DLP disclosed in the embodiment of the present invention 1；
Fig. 4 is the sequential schematic that the DLP projection system disclosed in the embodiment of the present invention 1 is radiated on the work surface of resin storage tank.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Below in conjunction with schematic diagram, the detailed description of the invention of the present invention is described in further detail.
As shown in Figure 1, Figure 3, the present invention proposes a kind of photocuring 3D printing shaping method based on DLP, it include as
Lower step:
S101, the 3D physical model of part to be printed is cut into slices, obtain the panel data of all two-dimensional section layers of model；
S102, computer control system control DLP projection system on the work surface of resin storage tank along in a rectilinear direction with
Continuous even acceleration, the mode at the uniform velocity and all slowed down move, and during movement, the computer system all two dimensions to model
The panel data of cross-sectional layers carries out signal of telecommunication conversion, obtains the pattern of corresponding all two-dimensional section layers in DLP projection system
Information；The most continuous even acceleration, the mode at the uniform velocity and all slowed down are moved and are so that DLP projection system Continuous irradiation arbitrary described two
The irradiation time of the pattern-information of dimension cross-sectional layers is default irradiation time；
S103, repeat the above steps, until the irradiation molding of all two-dimensional section layers of model.
As shown in Figure 2 and Figure 3, described computer control system controls the DLP projection system 350 work surface at resin storage tank 310
On along in a rectilinear direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move, wherein, described computer controls system
System includes control module 204, in order to control DLP projection system 350 on the work surface of resin storage tank 310 along a rectilinear direction
On by continuous even acceleration, at the uniform velocity and all slow down in the way of move, control module 204 controls DLP projection system 350 in X, Y-direction
Upper movement, and drive and on the work surface in resin storage tank of the corresponding DLP data for projection region, carry out fixed angle, set time
Irradiating to complete the photocuring of model, a described rectilinear direction being one or both in X-direction, in Y-direction.
Continue as in figure 2 it is shown, described computer control system also includes detection module 204 and irradiates switch module 205, when
Computer system detects that the pattern-information of arbitrary two-dimensional section layer is opened and irradiates switch module 205 startup irradiation, works as computer
System is not detected by the pattern-information of arbitrary two-dimensional section layer and opens irradiation switch module 205 closedown irradiation.
Continue as shown in Figure 2 and Figure 3, to the invention allows for photocuring 3D printing shaping system based on DLP, comprising:
Section module 201, cuts into slices in order to the 3D physical model of part to be printed, obtains all two-dimensional section layers of model
Panel data；
Computer control module 202, controls the DLP projection system 350 work surface at resin storage tank 310 in order to computer control system
On along in a rectilinear direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move, and during movement, calculate
Machine system carries out signal of telecommunication conversion to the panel data of all two-dimensional section layers of model, obtains phase in DLP projection system 350
The pattern-information of all two-dimensional section layers answered；The most continuous even acceleration, the mode at the uniform velocity and all slowed down move and are so that DLP throws
The irradiation time of the pattern-information of the arbitrary described two-dimensional section layer of shadow system 350 Continuous irradiation is default irradiation time.
Continuing as shown in Figure 2 and Figure 3, described computer control system controls the DLP projection system 350 work at resin storage tank 310
Make on face along in a rectilinear direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move, wherein, described computer control
System processed includes control module 204, in order to control DLP projection system 350 on the work surface of resin storage tank 310 along a straight line
On direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move, control module 204 controls DLP projection system 350 at X, Y
Side moves up, and drive carry out on the work surface in resin storage tank of the corresponding DLP data for projection region fixed angle, fixing time
Between irradiate to complete the photocuring of model, a described rectilinear direction is the one in X-direction, in Y-direction or two
Kind.
Continue as in figure 2 it is shown, described computer control system also includes detection module 204 and irradiates switch module 205, when
Computer system detects that the pattern-information of arbitrary two-dimensional section layer is opened and irradiates switch module 205 startup irradiation, works as computer
System is not detected by the pattern-information of arbitrary two-dimensional section layer and opens irradiation switch module 205 closedown irradiation.
Embodiment 1.
As it is shown on figure 3, based on DLP disclosed in the embodiment of the present invention 1 can subregion photocuring 3D printing formation unit 300, DLP
Optical projection system 350 is positioned at the top of resin storage tank 310, and according to computer 360 control to irradiate two-dimensional image information, irradiation time with
And DLP projection system 350 can be moved in the x, y direction, make one layer of photosensitive resin of resin storage tank 310 liquid level be cured.DLP every time
Optical projection system 350 is irradiated after image information makes the solidification of one layer of photosensitive resin, and Z-axis lifting mechanism 330 all can drive that layer of molding
The photosensitive resin of solidification slightly declines, and uniformly sprawls photosensitive resin by the workpiece end face after scraper plate 323 makes solidification, waits
The irradiation of two dimensional image next time.So circulation, it will the 3 D workpiece of the molding that successively added up.
As shown in Figure 4, the size that square type part 400 disclosed in this invention is projected out with DLP projection system 350 is
Unit on the work surface of resin storage tank 310 with even acceleration, at the uniform velocity, the motion mode of even deceleration transports with straight line in Y-direction in X direction
Dynamic, DLP projection system 350 is irradiated, until completing all two dimensional images of S type part 400 such as the arrow order in figure successively
Irradiation.
Above-described is only the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, it is also possible to make some deformation and improvement, these broadly fall into the present invention
Protection domain.
Claims (9)
1. photocuring 3D printing speed forming method based on DLP, it is characterised in that it comprises the steps:
1) the 3D physical model of part to be printed is cut into slices, obtain the panel data of all two-dimensional section layers of model；
2) computer control system control DLP projection system on the work surface of resin storage tank along in a rectilinear direction with continuously
Even acceleration, the mode at the uniform velocity and all slowed down move, and during movement, the computer system all two-dimensional sections to model
The panel data of layer carries out signal of telecommunication conversion, obtains the pattern-information of corresponding all two-dimensional section layers in DLP projection system；
The most continuous even acceleration, the mode at the uniform velocity and all slowed down are moved and are so that the arbitrary described two dimension of DLP projection system Continuous irradiation is cut
The irradiation time of the pattern-information of surface layer is default irradiation time；
3) repeat the above steps, until the irradiation molding of all two-dimensional section layers of model.
Photocuring 3D printing speed forming method based on DLP the most according to claim 1, it is characterised in that described meter
Calculation machine control system control DLP projection system on the work surface of resin storage tank along in a rectilinear direction with continuous even acceleration,
The mode at the uniform velocity and all slowed down moves, and wherein, described computer control system includes control module, in order to control DLP projection is
System on the work surface of resin storage tank along in a rectilinear direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move.
Photocuring 3D printing speed forming method based on DLP the most according to claim 2, it is characterised in that described meter
Calculation machine control system also includes detection module and irradiates switch module, when computer system detects the figure of arbitrary two-dimensional section layer
Case information is opened and is irradiated switch module and start and irradiate, and opens when computer system is not detected by the pattern-information of arbitrary two-dimensional section layer
Open irradiation switch module and close irradiation.
Photocuring 3D printing speed forming method based on DLP the most according to claim 1, it is characterised in that described
It is one or both in X-direction, in Y-direction in one rectilinear direction.
5. photocuring 3D printing speed formation system based on DLP, it is characterised in that it includes the following:
Section module, cuts into slices in order to the 3D physical model of part to be printed, obtains all two-dimensional section layers flat of model
Face data；
Computer control module, controls DLP projection system on the work surface of resin storage tank along one in order to computer control system
In individual rectilinear direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move, and during movement, computer system pair
The panel data of all two-dimensional section layers of model carries out signal of telecommunication conversion, obtains the most all two in DLP projection system
The pattern-information of dimension cross-sectional layers；The most continuous even acceleration, the mode at the uniform velocity and all slowed down move and are so that DLP projection system is continuous
The irradiation time of the pattern-information irradiating arbitrary described two-dimensional section layer is default irradiation time.
Photocuring 3D printing speed formation system based on DLP the most according to claim 5, it is characterised in that described meter
Calculation machine control system control DLP projection system on the work surface of resin storage tank along in a rectilinear direction with continuous even acceleration,
The mode at the uniform velocity and all slowed down moves, and wherein, described computer control system includes control module, in order to control DLP projection is
System on the work surface of resin storage tank along in a rectilinear direction by continuous even acceleration, at the uniform velocity and all slow down in the way of move.
Photocuring 3D printing speed formation system based on DLP the most according to claim 6, it is characterised in that described meter
Calculation machine control system also includes detection module and irradiates switch module, when computer system detects the figure of arbitrary two-dimensional section layer
Case information is opened and is irradiated switch module and start and irradiate, and opens when computer system is not detected by the pattern-information of arbitrary two-dimensional section layer
Open irradiation switch module and close irradiation.
Photocuring 3D printing speed formation system based on DLP the most according to claim 5, it is characterised in that described
It is one or both in X-direction, in Y-direction in one rectilinear direction.
9. photocuring 3D printing speed former based on DLP, it is characterised in that it includes described in any claim 1-8
Photocuring 3D printing speed forming method based on DLP and system.
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| CN201610240624.XA CN105904727A (en) | 2016-04-19 | 2016-04-19 | DLP-based photocuring 3D printing forming method, system and device |
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| CN201610240624.XA CN105904727A (en) | 2016-04-19 | 2016-04-19 | DLP-based photocuring 3D printing forming method, system and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115070898A (en) * | 2022-06-10 | 2022-09-20 | 苏州大学 | Ceramic 3D printing hardware control system based on DLP |
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