CN107718535B - DLP photocureable rapid shaping border processing method and device - Google Patents
DLP photocureable rapid shaping border processing method and device Download PDFInfo
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- CN107718535B CN107718535B CN201710907987.9A CN201710907987A CN107718535B CN 107718535 B CN107718535 B CN 107718535B CN 201710907987 A CN201710907987 A CN 201710907987A CN 107718535 B CN107718535 B CN 107718535B
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
Abstract
The invention belongs to 3D printing technique field, providing a kind of DLP photocureable rapid shaping border processing method and device, this method includes being sliced threedimensional model to form.Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained.Model silhouette line is obtained, and by the width of definite value adjustment model silhouette line, obtains the contour edge line of bandwidth.In the closed area that the contour edge line of bandwidth is surrounded, normal filling of drawing is carried out, in the contour edge line of bandwidth, drawing filling is carried out according to goal-selling gray scale, constitutes slice map, formed.DLP photocureable rapid shaping border processing method and device of the present invention, can effectively avoid solidification caused by halation, improve the edge definition of photocureable rapid shaping, accelerate molding speed, reduce polishing operation.
Description
Technical field
The present invention relates to 3D printing technique fields, and in particular to a kind of DLP photocureable rapid shaping border processing method and
Device.
Background technique
Rapid shaping technique is to be resolved into three-dimensional modeling data a little or face using computer, then material is piled by putting
Face obtains physical prototypes by face stack adult.
Currently, rapid shaping technique has photocureable rapid shaping, heat fusing extrusion molding and three kinds of selective laser sintering
Main way.The model that heat fusing extrusion molding and selective laser sintering obtain, surface is more coarse, and precision is low, and utilizes
The model that SLA/DLP Introduction To Stereolithography obtains, surface is smooth, and precision is higher, so Introduction To Stereolithography
The favor of more people is obtained.
Introduction To Stereolithography is formed using the light for absorbing ultraviolet band, such as laser, mercury lamp, ultraviolet LED.
But due to light propagate when can occur reflection, refraction, scattering phenomena such as, light enter resin storage tank, pass through resin storage tank and
All there is the reflection of light, refraction, scattering in resin material, lead to halation occur at image profiles edge, i.e. imaging plain edge edge
The light for stretching out, a-quadrant as shown in figure 1.The halation at image profiles edge can also be such that resin material solidifies, and lead to contoured edge
Coarse, precision reduces.Resin material needs certain ultraviolet ray intensity that can just form.Although can also be by reducing entire light source
Intensity, come realize reduce image profiles edge halation intensity, still, speed molding in this way is slow, and shaping efficiency is low.
In addition, image profiles edge halation cured feature be not to belong to feature on model, increase the loss of material.
How solidification caused by halation is effectively avoided, improve the edge definition of photocureable rapid shaping, accelerates molding speed
The problem of degree reduces polishing operation, is those skilled in the art's urgent need to resolve.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of DLP photocureable rapid shaping border processing method, energy
It is enough effectively to avoid solidification caused by halation, the edge definition of photocureable rapid shaping is improved, molding speed is accelerated, reduces polishing
Process.
In a first aspect, the present invention provides a kind of DLP photocureable rapid shaping border processing method, this method comprises: by three
Dimension module slice molding；
Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained；
Model silhouette line is obtained, and by the width of definite value adjustment model silhouette line, obtains the contour edge line of bandwidth；
In the closed area that the contour edge line of bandwidth is surrounded, normal filling of drawing is carried out, in the wheel of bandwidth
In wide edge line, drawing filling is carried out according to goal-selling gray scale, slice map is constituted, is formed.
Further, by the width of definite value adjustment model silhouette line, the contour edge line of bandwidth is obtained, is specifically included:
According to definite value, model silhouette line is subjected to diminution offset toward normal direction, obtains the contour edge line of bandwidth.
Based on above-mentioned any DLP photocureable rapid shaping border processing method embodiment, further, mould is adjusted by definite value
Before the width of type contour line, this method further include:
Model silhouette line is obtained, model silhouette line is reduced into offset by preset width value toward normal direction, obtains bandwidth
The sample contour edge line of degree；
In the closed area that the sample contour edge line of bandwidth is surrounded, normal filling of drawing is carried out, in bandwidth
Sample contour edge line in, carry out drawing filling according to goal-selling gray scale, constitute slice map, formed；
Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained, if meeting rule
Otherwise lattice, adjust width value then using width value as definite value, repeat to reduce offset, drawing filling and molding, until at
Image planes edge halation size and forming model edge cure situation are up to specification.
Based on above-mentioned any DLP photocureable rapid shaping border processing method embodiment, further, in the mould of bandwidth
In type contour line, before carrying out drawing filling according to goal-selling gray scale, this method further include:
Model silhouette line is obtained, model silhouette line is reduced into offset by definite value toward normal direction, obtains the sample of bandwidth
Contour edge line；
In the closed area that the sample contour edge line of bandwidth is surrounded, normal filling of drawing is carried out, in bandwidth
Sample contour edge line in, carry out drawing filling according to default gray value, constitute slice map, formed；
Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained, if meeting rule
Otherwise lattice, adjust gray value then using gray value as target gray, repeat to reduce offset, drawing filling and molding, directly
It is up to specification to imaging surface edge halation size and forming model edge cure situation.
Based on above-mentioned any DLP photocureable rapid shaping border processing method embodiment, further, model silhouette is obtained
Line specifically includes:
All intersection points for calculating threedimensional model to be formed and given plane obtain between the discrete point and discrete point of contour edge
Topological relation；
According to the topological relation between discrete point, various discrete point is connected, model silhouette line is obtained.
Second aspect, the present invention provide a kind of DLP photocureable rapid shaping edge processing apparatus, which includes being sliced into
Pattern block, molding detection module, width adjustment module and filling module of drawing, slice forming module is for threedimensional model to be sliced
Molding；Molding detection module obtains imaging surface edge halation size and forming model edge cure shape for observing formation phenomena
Condition；Width adjustment module obtains the wheel of bandwidth for obtaining model silhouette line, and by the width of definite value adjustment model silhouette line
Wide edge line；Filling module of drawing is used in the closed area that the contour edge line of bandwidth is surrounded, and is normally drawn
Filling carries out drawing filling according to goal-selling gray scale, constitutes slice map, formed in the contour edge line of bandwidth.
Further, width adjustment module obtains the profile side of bandwidth in the width by definite value adjustment model silhouette line
When edge line, it is specifically used for: according to definite value, model silhouette line is subjected to diminution offset toward normal direction, obtains the profile of bandwidth
Edge line.
Based on above-mentioned any DLP photocureable rapid shaping edge processing apparatus embodiment, further, which further includes
Definite value screening module, is specifically used for: obtaining model silhouette line, model silhouette line is reduced toward normal direction by preset width value
Offset, obtains the sample contour edge line of bandwidth；In the closed area that the sample contour edge line of bandwidth is surrounded, into
The normal filling of drawing of row, in the sample contour edge line of bandwidth, carries out drawing filling according to goal-selling gray scale, composition is cut
Piece figure, is formed；Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained, if
It is up to specification, then using width value as definite value, otherwise, width value is adjusted, repeats to reduce offset, drawing filling and molding,
Until imaging surface edge halation size and forming model edge cure situation are up to specification.
Based on above-mentioned any DLP photocureable rapid shaping edge processing apparatus embodiment, further, which further includes
Target gray screening module, is specifically used for: model silhouette line being reduced toward normal direction by definite value and is deviated, the sample of bandwidth is obtained
This profile edge line；In the closed area that the sample contour edge line of bandwidth is surrounded, normal filling of drawing is carried out, in band
In the sample contour edge line of width, drawing filling is carried out according to default gray value, slice map is constituted, is formed；It observes into
Type phenomenon, obtains imaging surface edge halation size and forming model edge cure situation makees gray value if up to specification
Gray value otherwise is adjusted for target gray, repeats to reduce offset, drawing filling and molding, until imaging surface edge halation
Size and forming model edge cure situation are up to specification.
Based on above-mentioned any DLP photocureable rapid shaping edge processing apparatus embodiment, further, width adjustment module
When obtaining model silhouette line, it is specifically used for: calculates all intersection points of threedimensional model to be formed and given plane, obtain profile side
Topological relation between the discrete point and discrete point of edge；According to the topological relation between discrete point, various discrete point is connected, model is obtained
Contour line.
As shown from the above technical solution, DLP photocureable rapid shaping border processing method and device provided in this embodiment,
The width and gray value that model silhouette line can be adjusted change the light intensity of imaging surface, diffraction by changing the gray scale of slice map
Situation will improve, and carry out projection molding, can either effectively avoid solidification caused by halation, improve photocureable rapid shaping
Edge definition, and can be improved the intensity of light source, accelerate molding speed, additionally it is possible to reduce polishing operation, reduce the damage of material
Consumption.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 shows the imaging surface perspective view of traditional molding methods provided by the present invention；
Fig. 2 shows a kind of method flow diagrams of DLP photocureable rapid shaping border processing method provided by the present invention；
Fig. 3 shows the method flow diagram of optimum optimization value screening technique provided by the present invention；
Fig. 4 shows the contour edge line chart of bandwidth provided by the present invention；
Fig. 5 shows the slice map of DLP photocureable rapid shaping border processing method provided by the present invention；
Fig. 6 shows the imaging surface perspective view of DLP photocureable rapid shaping border processing method provided by the present invention；
Fig. 7 shows a kind of structural schematic diagram of DLP photocureable rapid shaping edge processing apparatus provided by the present invention.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be intended only as example, and cannot be used as a limitation and limit protection of the invention
Range.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
In a first aspect, a kind of DLP photocureable rapid shaping border processing method provided by the embodiment of the present invention, in conjunction with figure
2, this method comprises:
Threedimensional model is sliced and forms by step S1.
Step S2 observes formation phenomena, obtains imaging surface edge halation size and forming model edge cure situation.
Step S3 obtains model silhouette line, and by the width of definite value adjustment model silhouette line, obtains the profile side of bandwidth
Edge line.As shown in figure 4, white area is the model silhouette line of bandwidth.
Step S4 carries out normal filling of drawing, in bandwidth in the closed area that is surrounded of contour edge line of bandwidth
In the contour edge line of degree, drawing filling is carried out according to goal-selling gray scale, constitutes slice map, as shown in figure 5, formed,
The light for being contour area can be dark, but the gray scale of light elsewhere will not become.Constant, profile inside the model of the slice map
Edge is dimmed.In this way, can be because the gray value in contour edge region is low, it will not be so bright, the halation of surrounding will be reduced.
In actual application, the gray value for changing picture will change the light intensity of imaging surface corresponding position.Slice map
The gray value at edge becomes smaller, and light intensity will reduce, and the halation intensity generated will reduce, when the threshold value for being lower than material solidification
When, it can effectively avoid solidification caused by halation.
But the gray value also not in contour edge line width is the smaller the better, gray value is small, the light intensity of imaging surface
It is low, when lower than solidification threshold value, it just will affect the normal cure of contour edge, so needing by multiple experiment, to a large amount of
Experimental data analyzed, find the width value and gray value of best model contour line.
As shown from the above technical solution, DLP photocureable rapid shaping border processing method provided in this embodiment, can adjust
The width and gray value of integral mould contour line change the light intensity of imaging surface by changing the gray scale of slice map, and diffraction situation is just
It can improve, carry out projection molding, can either effectively avoid solidification caused by halation, improve the edge essence of photocureable rapid shaping
Degree, and can be improved the intensity of light source, accelerate molding speed, additionally it is possible to reduce polishing operation, reduce the loss of material.
In order to further increase the accuracy of the present embodiment DLP photocureable rapid shaping border processing method, in width tune
Perfect square face when obtaining the contour edge line of bandwidth, implements process are as follows: press by the width of definite value adjustment model silhouette line
According to definite value, model silhouette line is subjected to diminution offset toward normal direction, obtains the contour edge line of bandwidth, along normal direction into
Line displacement, can either adjust the width of model silhouette line, and be able to maintain original model silhouette.
In terms of the width screening of model silhouette line, before the width by definite value adjustment model silhouette line, the present embodiment DLP
Photocureable rapid shaping border processing method uses unitary variant method, is adjusted to width value, implements process are as follows:
Model silhouette line is obtained, model silhouette line is reduced into offset by preset width value toward normal direction, obtains bandwidth
The sample contour edge line of degree.
In the closed area that the sample contour edge line of bandwidth is surrounded, normal filling of drawing is carried out, in bandwidth
Sample contour edge line in, carry out drawing filling according to goal-selling gray scale, constitute slice map, formed.
Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained, if meeting rule
Otherwise lattice, adjust width value then using width value as definite value, repeat to reduce offset, drawing filling and molding, until at
Image planes edge halation size and forming model edge cure situation are up to specification.
Here, the width value of model silhouette line is particularly important to size, the edge cure situation of halation, for uniform machinery
For, in the timing of the machine intensity of light source one, repeatedly adjusted, filter out profile it is best when width value, as most
Good parameter, i.e. definite value.In uniform machinery and one timing of the intensity of light source, model silhouette line is adjusted using the definite value, so as to
In the best profile of acquisition.
In terms of the gray value screening of model silhouette line, in the model silhouette line of bandwidth, according to goal-selling gray scale
Before carrying out drawing filling, the present embodiment DLP photocureable rapid shaping border processing method uses unitary variant method, to gray value
It is adjusted, implements process are as follows:
Model silhouette line is obtained, model silhouette line is reduced into offset by definite value toward normal direction, obtains the sample of bandwidth
Contour edge line.
In the closed area that the sample contour edge line of bandwidth is surrounded, normal filling of drawing is carried out, in bandwidth
Sample contour edge line in, carry out drawing filling according to default gray value, constitute slice map, formed.
Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained, if meeting rule
Otherwise lattice, adjust gray value then using gray value as target gray, repeat to reduce offset, drawing filling and molding, directly
It is up to specification to imaging surface edge halation size and forming model edge cure situation.
Here, the gray value of model silhouette line is particularly important to size, the edge cure situation of halation, for uniform machinery
For, in the timing of the machine intensity of light source one, repeatedly adjusted, filter out profile it is best when gray value, as most
Good parameter, i.e. target gray.In uniform machinery and one timing of the intensity of light source, model silhouette line is adjusted using the target gray
It is whole, in order to obtain best profile.
In terms of model silhouette line acquisition, model silhouette line is obtained, implements process are as follows:
All intersection points for calculating threedimensional model to be formed and given plane obtain between the discrete point and discrete point of contour edge
Topological relation.
According to the topological relation between discrete point, various discrete point is connected, model silhouette line is obtained.
Here, the present embodiment DLP photocureable rapid shaping border processing method calculates to be formed three using Slicing Algorithm
The intersection point and topological relation of dimension module and plane can quickly and accurately obtain model silhouette line, guarantee the edge of model forming
Precision.
Optimum optimization value screening technique provided by the embodiment of the present invention determines the width value and gray scale of model silhouette line
Value, in conjunction with Fig. 3, this method comprises:
By a threedimensional model slice molding.
Observe imaging surface edge halation size, and observation forming model edge cure situation.
Using Slicing Algorithm, after obtaining model silhouette line, model silhouette line is handled, by model silhouette line toward normal
Direction is reduced by definite value, obtains the contour edge line of bandwidth.
It normally draws and fills in the contour edge line of diminution, drawn in the contour edge line of bandwidth by certain gray scale
Totem culture obtains constant, the dimmed slice map of contour edge inside model.
It forms again, observes imaging surface edge halation size, observing and nursing edge cure situation.
The processing of contour edge line, drawing filling and forming step is performed a plurality of times and changes profile respectively using unitary variant method
The gray value of the width of edge line, contour line, according to profile situation, to obtain optimal optimal value.
Second aspect, a kind of DLP photocureable rapid shaping edge processing apparatus provided by the embodiment of the present invention, in conjunction with figure
7, which includes slice forming module 1, molding detection module 2, width adjustment module 3 and filling module 4 of drawing, slice molding
Module 1 is used to for threedimensional model being sliced and form；Molding detection module 2 obtains imaging surface edge halation for observing formation phenomena
Size and forming model edge cure situation；Width adjustment module 3 adjusts model wheel for obtaining model silhouette line, and by definite value
The width of profile obtains the contour edge line of bandwidth；Filling module 4 of drawing is used to be surrounded in the contour edge line of bandwidth
Closed area in, carry out normal filling of drawing, in the contour edge line of bandwidth, draw according to goal-selling gray scale
Filling constitutes slice map, is formed.
As shown from the above technical solution, DLP photocureable rapid shaping edge processing apparatus provided in this embodiment, can adjust
The width and gray value of integral mould contour line change the light intensity of imaging surface by changing the gray scale of slice map, and diffraction situation is just
It can improve, carry out projection molding, can either effectively avoid solidification caused by halation, improve the edge essence of photocureable rapid shaping
Degree, and can be improved the intensity of light source, accelerate molding speed, additionally it is possible to reduce polishing operation, reduce the loss of material.
In order to further increase the accuracy of the present embodiment DLP photocureable rapid shaping edge processing apparatus, in width tune
Perfect square face, width adjustment module 3 is in the width by definite value adjustment model silhouette line, when obtaining the contour edge line of bandwidth, tool
Body is used for: according to definite value, model silhouette line being carried out diminution offset toward normal direction, obtains the contour edge line of bandwidth, edge
Normal direction is deviated, and the width of model silhouette line can either be adjusted, and is able to maintain original model silhouette.
In terms of the width screening of model silhouette line, the present embodiment DLP photocureable rapid shaping edge processing apparatus is used
Unitary variant method, is adjusted width value, which further includes definite value screening module, is specifically used for: model silhouette line is obtained,
Model silhouette line is reduced into offset by preset width value toward normal direction, obtains the sample contour edge line of bandwidth.In band
In the closed area that the sample contour edge line of width is surrounded, normal filling of drawing is carried out, on the sample profile side of bandwidth
In edge line, drawing filling is carried out according to goal-selling gray scale, slice map is constituted, is formed.Formation phenomena is observed, imaging is obtained
Face edge halation size and forming model edge cure situation, using width value as definite value, otherwise, are adjusted if up to specification
Whole width value repeats to reduce offset, draws and fill and form, until imaging surface edge halation size and forming model edge
Solidification situation is up to specification.
Here, the width value of model silhouette line is particularly important to size, the edge cure situation of halation, for uniform machinery
For, in the timing of the machine intensity of light source one, repeatedly adjusted, filter out profile it is best when width value, as most
Good parameter, i.e. definite value.In uniform machinery and one timing of the intensity of light source, model silhouette line is adjusted using the definite value, so as to
In the best profile of acquisition.
In terms of the gray value screening of model silhouette line, the present embodiment DLP photocureable rapid shaping edge processing apparatus fortune
With unitary variant method, gray value is adjusted, which further includes target gray screening module, is specifically used for: by model wheel
Profile reduces offset by definite value toward normal direction, obtains the sample contour edge line of bandwidth；On the sample profile side of bandwidth
In the closed area that edge line is surrounded, normal filling of drawing is carried out, in the sample contour edge line of bandwidth, according to default ash
Angle value carries out drawing filling, constitutes slice map, is formed；Observe formation phenomena, obtain imaging surface edge halation size and at
Pattern type edge cure situation, if up to specification, using gray value as target gray, otherwise, adjust gray value, repeat into
Row reduces offset, drawing filling and molding, until imaging surface edge halation size and forming model edge cure situation meet
Specification.
Here, the gray value of model silhouette line is particularly important to size, the edge cure situation of halation, for uniform machinery
For, in the timing of the machine intensity of light source one, repeatedly adjusted, filter out profile it is best when gray value, as most
Good parameter, i.e. target gray.In uniform machinery and one timing of the intensity of light source, model silhouette line is adjusted using the target gray
It is whole, in order to obtain best profile.
The present embodiment DLP photocureable rapid shaping edge processing apparatus obtains model silhouette line using width adjustment module 3
When, it is specifically used for: calculates all intersection points of threedimensional model to be formed and given plane, obtains the discrete point of contour edge and discrete
Topological relation between point；According to the topological relation between discrete point, various discrete point is connected, model silhouette line is obtained.
Here, the present embodiment DLP photocureable rapid shaping edge processing apparatus calculates to be formed three using Slicing Algorithm
The intersection point and topological relation of dimension module and plane can quickly and accurately obtain model silhouette line, guarantee the edge of model forming
Precision.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (6)
1. a kind of DLP photocureable rapid shaping border processing method characterized by comprising
Threedimensional model is sliced and is formed；
Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained；
Model silhouette line is obtained, and adjusts the width of the model silhouette line by definite value, obtains the contour edge line of bandwidth；
In the closed area that the contour edge line of the bandwidth is surrounded, normal filling of drawing is carried out, in the bandwidth
Contour edge line in, carry out drawing filling according to goal-selling gray scale, constitute slice map, formed；
Before the width for adjusting the model silhouette line by definite value, this method further include:
Model silhouette line is obtained, model silhouette line is reduced into offset by preset width value toward normal direction, obtains bandwidth
Sample contour edge line；
In the closed area that the sample contour edge line of the bandwidth is surrounded, normal filling of drawing is carried out, in the band
In the sample contour edge line of width, drawing filling is carried out according to goal-selling gray scale, slice map is constituted, is formed；
Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained, if up to specification,
Using the width value as the definite value, otherwise, the width value is adjusted, repeats to reduce offset, draws and fill and form,
Until imaging surface edge halation size and forming model edge cure situation are up to specification；
In the model silhouette line of the bandwidth, before carrying out drawing filling according to goal-selling gray scale, this method further include:
Model silhouette line is obtained, model silhouette line is reduced into offset by definite value toward normal direction, obtains the sample profile of bandwidth
Edge line；
In the closed area that the sample contour edge line of the bandwidth is surrounded, normal filling of drawing is carried out, in the band
In the sample contour edge line of width, drawing filling is carried out according to default gray value, slice map is constituted, is formed；
Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained, if up to specification,
Using the gray value as the target gray, otherwise, adjust the gray value, repeat reduce offset, draw filling and
Molding, until imaging surface edge halation size and forming model edge cure situation are up to specification.
2. DLP photocureable rapid shaping border processing method according to claim 1, which is characterized in that adjust institute by definite value
The width for stating model silhouette line obtains the contour edge line of bandwidth, specifically includes:
According to definite value, the model silhouette line is subjected to diminution offset toward normal direction, obtains the contour edge of the bandwidth
Line.
3. DLP photocureable rapid shaping border processing method according to claim 1, which is characterized in that obtain model silhouette
Line specifically includes:
All intersection points for calculating threedimensional model to be formed and given plane obtain opening up between the discrete point and discrete point of contour edge
Flutter relationship；
According to the topological relation between the discrete point, various discrete point is connected, the model silhouette line is obtained.
4. a kind of DLP photocureable rapid shaping edge processing apparatus characterized by comprising
It is sliced forming module, is formed for threedimensional model to be sliced；
Detection module is formed, for observing formation phenomena, obtains imaging surface edge halation size and forming model edge cure shape
Condition；
Width adjustment module for obtaining model silhouette line, and is adjusted by definite value the width of the model silhouette line, obtains bandwidth
The contour edge line of degree；
It draws and fills module, in the closed area surrounded for the contour edge line in the bandwidth, normally drawn
Filling carries out drawing filling according to goal-selling gray scale, constitutes slice map, carry out in the contour edge line of the bandwidth
Molding；
The device further includes definite value screening module, is specifically used for: obtaining model silhouette line, model silhouette line is pressed toward normal direction
Preset width value reduces offset, obtains the sample contour edge line of bandwidth；In the sample contour edge line of the bandwidth
In the closed area surrounded, normal filling of drawing is carried out, in the sample contour edge line of the bandwidth, according to default mesh
Mark gray scale carries out drawing filling, constitutes slice map, is formed；Observe formation phenomena, obtain imaging surface edge halation size and
Forming model edge cure situation, using the width value as the definite value, otherwise, adjusts the width if up to specification
Angle value repeats to reduce offset, draws and fill and form, until imaging surface edge halation size and forming model edge cure
Situation is up to specification；
The device further includes target gray screening module, is specifically used for: model silhouette line is reduced partially toward normal direction by definite value
It moves, obtains the sample contour edge line of bandwidth；In the closed area that the sample contour edge line of the bandwidth is surrounded,
Normal filling of drawing is carried out, in the sample contour edge line of the bandwidth, carries out drawing filling, structure according to default gray value
At slice map, formed；Formation phenomena is observed, imaging surface edge halation size and forming model edge cure situation are obtained,
If up to specification, using the gray value as the target gray, otherwise, the gray value adjusted, repeat to reduce
Offset, draw filling and molding, until imaging surface edge halation size and forming model edge cure situation are up to specification.
5. DLP photocureable rapid shaping edge processing apparatus according to claim 4, which is characterized in that the width adjustment
Module is specifically used for when obtaining the contour edge line of bandwidth in the width for adjusting the model silhouette line by definite value: according to
The model silhouette line is carried out diminution offset toward normal direction, obtains the contour edge line of the bandwidth by definite value.
6. DLP photocureable rapid shaping edge processing apparatus according to claim 4, which is characterized in that the width adjustment
Module is specifically used for when obtaining model silhouette line: calculating all intersection points of threedimensional model to be formed and given plane, obtains
Topological relation between the discrete point and discrete point of contour edge；According to the topological relation between the discrete point, various discrete is connected
Point obtains the model silhouette line.
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| CN108422660A (en) * | 2018-06-14 | 2018-08-21 | 南通理工学院 | One kind being based on DLP projection photocurables 3 D-printing method and equipment |
| CN109719954A (en) * | 2019-01-15 | 2019-05-07 | 北京科技大学 | A kind of DLP photocuring increasing material manufacturing surface quality improvement method |
| CN110435154A (en) * | 2019-08-12 | 2019-11-12 | 爱迪特（秦皇岛）科技股份有限公司 | For the image processing method of 3D printing, device, electronic equipment and storage medium |
| CN112008980B (en) * | 2020-02-24 | 2022-12-13 | 清锋（北京）科技有限公司 | 3D printing model processing method and system |
| CN113954366B (en) * | 2020-07-20 | 2023-10-13 | 上海普利生机电科技有限公司 | Light-cured three-dimensional printing method, device and equipment with reinforced bottom thin lines |
| CN115723333B (en) * | 2021-08-30 | 2024-04-09 | 广州黑格智造信息科技有限公司 | 3D printing method, system, device and storage medium |
| CN114379095B (en) * | 2021-12-07 | 2024-03-05 | 宁波智造数字科技有限公司 | Method for correcting Tyndall phenomenon in photo-curing 3D printing |
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