CN109483871A - The method for preventing the porous plate of FDM printing product alice and further increasing stamp with the size precision - Google Patents
The method for preventing the porous plate of FDM printing product alice and further increasing stamp with the size precision Download PDFInfo
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- CN109483871A CN109483871A CN201910012610.6A CN201910012610A CN109483871A CN 109483871 A CN109483871 A CN 109483871A CN 201910012610 A CN201910012610 A CN 201910012610A CN 109483871 A CN109483871 A CN 109483871A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- 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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- Physics & Mathematics (AREA)
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Abstract
The invention discloses a kind of methods for preventing the porous plate of product alice in FDM print procedure and further increasing stamp with the size precision.The porous plate is a rectangular plate (1), distribution is provided with multiple perforated holes (2) in plate face, perforated holes (2) are bellmouth, and each cross sectional shape through taper hole (2) is in antiparallelogram, and base angle is 45~80 °；And the method for improving stamp with the size precision is included in printing total height inventory after the quantity of material that hole on porous plate consumes is carried out altimetric compensation calculating when carrying out solid modelling before printing.Printout can not only be entirely fixed thereon by porous plate of the present invention, prevent to be detached from, and guarantee the stability of print procedure, improved the precision of printing product size, can be also easily achieved the automatically cleaning of porous plate, reduce the time cost of print procedure.It can further improve the printing precision of printing product thickness direction after the quantity of material that hole on porous plate consumes is compensated simultaneously.
Description
Technical field
The invention belongs to auxiliary equipment technical fields used in 3D printing, and in particular to one kind is for FDM (fuse deposition
Molding) method that prevents the porous plate of product alice and further increase stamp with the size precision in print procedure.
Background technique
3D printing is a kind of rapid shaping technique, and development was swift and violent in recent years.Its principle is: passing through 3 d modeling software first
Solid modelling is carried out, then step section is carried out to model by Slice Software, generates slice file.When work, 3D printer is logical
Cross the information for reading every layer of cross section in slice file, and with the adhesive materials such as fusible powdery metal or plastic into
Row successively printing is to produce 3D solid.The technology is many in industrial design, automobile, aerospace, mold manufacture etc.
Field is widely used.
FDM technology is one of current 3D printing mainstream technology, it is mainly with the hot-melt plastics silk material such as ABS, PLA work
For printing consumables, silk is sent into heating zone heating and melting by wire feeder, and by a plunger of unmelted fuse material itself
Thrust is extruded, and is subsequently deposited upon on platform, then cooperates the movement for squeezing out spray head to realize successively printing.But this skill
Art has the following problems in forming process: during using FDM technology printing product, the material of melting exists polymer material
After touching print platform, since there are the biggish temperature difference between platform and melted material, cooling meat can be generated at once, makes to deposit
Buckling deformation [seeing Fig. 5 (b)], the especially edge of material occur for material on platform, thus make the formed precision of product by
To influence.When the buckling deformation that material generates is excessive, in some instances it may even be possible to product be caused to be detached from print procedure from print platform
And interrupt printing.For the alice problem that product in FDM forming process occurs, occur some solving the problems, such as this now
Method such as improves print platform temperature, coating glue, T-me line paper etc. on platform, although these methods can be to a certain degree
The upper bonding situation for improving product and platform, reduction product alice degree, but the polymer material big for cooling meat rate,
Often product will be caused to be partially disengaged platform there is a phenomenon where cohesive force is inadequate when printing first layer.For this feelings
Condition, those skilled in the art use a kind of countermeasure again, i.e., install porous plate on the platform of 3D printing product and (be commonly called as hole
Hole plate).The improvement principle of this method is: in FDM forming process, when the polymer material of printing product first layer is contacting
Carry on as before when bottom plate in a molten state, and again by the squeezing action of printer nozzle, a part of material will be pressed into
In the hole (i.e. hole hole) of porous plate, thus printing can be fixed by entering the frictional force in hole between material and hole wall
Product.Though this method can improve the bonding situation between first layer printed matter and bottom plate to a certain extent, alleviate printing
The alice behavior of product, but still have following deficiency: because the hole of porous plate is straight hole, when the polymer material squeezed into hole
It is easily separated with hole wall after cooling meat occurs, at the same time in the warpage of the drag interaction and material of printer extrusion nozzle itself
Under the action of deformation, squeezes into part and be easily detached from from porous plate hole, cause product bottom that can not carry out good fixation, thus shadow
Ring the stability of printing and the dimensional accuracy of final product.Secondly, print procedure terminates, after product is removed from porous plate,
Can be remained in hole it is a certain amount of squeeze into object, these squeeze between object and hole wall exist friction, be difficult to deviate from from hole automatically,
Cleaning is not only cumbersome manually, and can also greatly increase the time cost of print procedure.In addition, due to the polymerization of molten condition
Object material can enter the hole in porous plate in print procedure, consume certain material, but this method does not consider such case,
It undoubtedly will affect the dimensional accuracy of printing product thickness direction in this way.
Summary of the invention
The purpose of the invention is to overcome the deficiencies of the prior art and provide one kind to beat for FDM (molten copper infiltration)
The porous plate of product alice is prevented during print, to improve the stability of FDM print procedure, print the dimensional accuracy of product and more
The property easy to clean of orifice plate.
The side of stamp with the size precision is further increased when it is a further object of the present invention to provide a kind of using above-mentioned porous plate
Method.
Provided by the invention a kind of for preventing the porous plate of product alice in FDM print procedure, which is a square
Shape plate, distribution is provided with multiple perforated holes in plate face, it is characterised in that perforated holes are bellmouth, each run through taper hole
Cross sectional shape be in antiparallelogram, base angle be 45 °~80 °.
The plate thickness h of porous plate described above is 0.5~4mm, preferably 1.5~3mm.
Adjacent two holes spacing t is 0.8~8mm, preferably 2~5mm in porous plate plate face described above.
The upper aperture radius r of each hole of porous plate described above be 0.15~1.5mm, preferably 0.25~1.0mm, under
Aperture radius R is 0.24~5.5mm, preferably 0.51~4.0mm.
The material for meeting processing conditions may be selected in porous plate described above according to actual needs, and glass, gold specifically can be selected
Belong to, any material in polymer material is made.It is preferred that the polymer material of doped-glass fiber or carbon fiber, wherein polymerizeing
Object material is any one of polypropylene, poly terephthalic acid diol ester, polyamide or epoxy resin；The glass fibre of doping or
Carbon fiber mass percent is 20~70%, preferably 30~40%.
It is provided by the invention it is a kind of using above-mentioned porous plate when further increase stamp with the size precision method, this method is
When carrying out solid modelling before printing, the quantity of material for according to the following formula consuming hole on porous plate is converted into the system of compensation
Part height adjusts the total height of CAD integral mould with this:
In formula: H is compensated CAD integral mould total height；
H1For the design height for printing product；
H2For the printing product height for needing to compensate because of porous plate holes consumable material；
S1For the area for printing product and porous plate contact surface；
V is the total volume of porous plate consumable material,
V=n × V1；
hsEnter the depth h of single hole for materials≤ h, h are the thickness of porous plate, and each polymer material in difference because adding
Viscosity at a temperature of work is different, and the depth into hole is also different, generally the 20-100% of orifice plate thickness h, hsTool
Body height can be actually measured in test print；
N is the numbers of hole for printing product and porous plate contact surface and covering；
V1For the volume for entering material in single hole；
T is the distance between adjacent two holes center line on porous plate；
R is the radius in aperture on the upper conical hole of porous plate；
α is the base angle angle of porous plate bellmouth cross sectional shape antiparallelogram.
This formula can be used when drawing product CAD model, and product height is printed according to the sizecalculation of porous plate
Dimensional discrepancy on direction is just taken into account the dimensional discrepancy when production prints product model according to calculated result, with row
Fighting each other except taper hole plate holes because of spent material influences brought by printing part size.
Compared with the prior art, the present invention has the following beneficial effects:
1, since the hole on porous plate provided by the invention is designed as up-small and down-big bellmouth, in print procedure,
Fused materials flow into through hole in after, under molten condition also be in up-small and down-big circular cone, it is this be covered with printout bottom and with
Connected circular cone it is cooling after printout can be entirely fixed on bottom plate [see Fig. 5 (a)] well, even if stronger
Under the cooling meat active force of nozzle drag interaction and printout base material, these circular cones can also prevent printout and bottom plate
It is detached from, thus can guarantee the stability of print procedure, improve the precision of printing product size.Particularly with cooling meat
The high crystalline material of rate such as polypropylene PP, polythene PE etc., the warpage for largely reducing these file printing products become
Form quotient and rejection rate expand the molding suitable material range of FDM.
2, terminate due to porous plate provided by the invention in print procedure, after product is removed from porous plate, shape in taper hole
At up-small and down-big circular cone easily deviate from from hole, thus the self-cleaning function of porous plate can be easily achieved, reduction is beaten
The time cost of print process.
3, since the method provided by the invention for further increasing stamp with the size precision can carry out solid modelling before printing
When, it is included in the total inventory of entire product printing after the quantity of material that hole on porous plate consumes is carried out altimetric compensation calculating, because
And the printing precision of printing product thickness direction can be further increased on the basis of using tapered, porous plate.
Detailed description of the invention
Fig. 1 is porous plate schematic perspective view provided by the invention.
Fig. 2 is the schematic cross-sectional view of porous plate taper hole provided by the invention.
Fig. 3 is to illustrate design height H by taking a printing rectangular shaped article part as an example1With need to mend because of porous plate holes consumable material
The printing product height H repaid2And the schematic diagram of the overall height H of compensated entire product printing.
Fig. 4 is to illustrate to print the numbers of hole that product bottom surface covers on porous plate by taking a printing rectangular shaped article part as an example
Schematic diagram.
Fig. 5 be using FDM technology forming polypropylene cuboid batten when, respectively with porous plate (a) provided by the invention with
The fixed effect of batten onboard compares digital photograph after the completion of straight hole plate (b) printing of the prior art.
When Fig. 6 is using FDM technology forming polypropylene cuboid batten, respectively with porous plate provided by the invention and existing
The change curve of the buckling deformation rate of polypropylene product obtained by the straight hole plate of technology.
In Fig. 1-Fig. 4,1- porous plate, 2- perforated holes, 3- printing rectangle product.
Specific embodiment
The present invention is specifically described below by drawings and examples, it is necessary to which indicated herein is following embodiment
It is served only for that the invention will be further described, should not be understood as limiting the scope of the invention, which is skilled in technique
Personnel make some nonessential modifications and adaptations to the present invention according to aforementioned present invention content, still fall within present invention protection model
It encloses.
It is worth noting that porous plate prepared by following embodiment and comparative example is for printing buckling deformation when product
Rate measuring method is: using 3D scanner scanning rectangular print product, obtains the 3-D image of printing product.With circle fitted rectangle system
The upper surface (warped surface) of part obtains buckling deformation degree of the round curvature to characterize product.
Embodiment 1
As shown in Figure 1, 2, provided in this embodiment for preventing the porous plate 1 of product alice in FDM print procedure, this is more
Orifice plate 1 is a rectangular plate, and plate thickness h=0.5mm, distribution is provided with multiple perforated holes 2 in plate face, and perforated holes 2 are bellmouth,
Each cross sectional shape through taper hole 2 is in antiparallelogram, and base angle is 80 °, and upper aperture radius r is 0.15mm, lower aperture
Radius R is 0.24mm, and adjacent two pitchs of holes t is 0.8mm, and is made of glass.
It is printing product raw material with polypropylene (T30S), the cuboid batten that printing product 3 is 80 × 10 × 4 (mm) is adopted
With 230 DEG C of print temperatures, print platform temperature is 20 DEG C, and measurement obtains fused materials and actually enters height in hole when test print
Degree be porous plate thickness 100%, provide according to the present invention using above-mentioned porous plate 1 when further increase stamp with the size precision
Method in compensation formula be calculated because porous 2 consumable material of plate holes needs the printing product height H that compensates2For
0.094mm, H1For 4.094mm (see Fig. 3,4), the compensated CAD model overall height H of the present embodiment is 4.078mm, and micrometer is surveyed
Product height after the completion of must printing is 3.998mm.
Embodiment 2
As shown in Figure 1, 2, porous plate 1 provided in this embodiment is also a rectangular plate, plate thickness h=4mm, is distributed in plate face
Multiple perforated holes 2 are provided with, perforated holes 2 are bellmouth, and each cross sectional shape through taper hole 2 is in antiparallelogram,
Base angle is 45 °, and upper aperture radius r is 1.5mm, and lower aperture radius R is 5.5mm, and the spacing t in adjacent two hole is 8mm, and by aluminium
Alloy sheets are made.
It is printing product raw material with polypropylene (T30S), the cuboid batten that printing product 3 is 80 × 10 × 4 (mm) is adopted
With 230 DEG C of print temperatures, print platform temperature is 20 DEG C, and measurement obtains fused materials and actually enters height in hole when test print
Degree be porous plate thickness 100%, provide according to the present invention using above-mentioned porous plate 1 when further increase stamp with the size precision
Method in compensation formula be calculated because porous 2 consumable material of plate holes needs the printing product height H that compensates2For
0.0142mm, H1For 4.0142mm (see Fig. 3,4), the compensated CAD model overall height H of the present embodiment should be 4.024mm, and thousand points
Product height after the completion of ruler measures to print is 4.001mm.
Embodiment 3
As shown in Figure 1, 2, porous plate 1 provided in this embodiment is also a rectangular plate, plate thickness h=1.5mm, is divided in plate face
Cloth is provided with multiple perforated holes 2, and perforated holes 2 are bellmouth, and each cross sectional shape through taper hole 2 is in antiparallelogram,
Its base angle is 80 °, and upper aperture radius r is 0.25mm, and lower aperture radius R is 0.51mm, and adjacent two pitchs of holes t is 2mm, and by
3240 epoxy plates (laminated epoxy glass-cloth board) are made.
It is printing product raw material with polypropylene (T30S), the cuboid batten that printing product 3 is 80 × 10 × 4 (mm) is adopted
With 230 DEG C of print temperatures, print platform temperature is 20 DEG C, measure the height that actually enters in hole of fused materials is porous plate
The 100% of thickness, provide according to the present invention using above-mentioned porous plate 1 when further increase in the method for stamp with the size precision
The printing product height H for needing to compensate because of porous 2 consumable material of plate holes is calculated in compensation formula2For 0.045mm, H1For
4mm, the compensated CAD model overall height H of the present embodiment should be 4.045mm, and the product after the completion of miking must print is high
Degree is 4.007mm.
As shown in Figure 1, 2, porous plate 1 provided in this embodiment is also a rectangular plate, plate thickness h=1.5mm, is divided in plate face
Cloth is provided with multiple perforated holes 2, and perforated holes 2 are bellmouth, and each cross sectional shape through taper hole 2 is in antiparallelogram,
Its base angle is 70 °, and upper aperture radius r is 0.5mm, and lower aperture radius R is 1.05mm, and adjacent two pitchs of holes t is 2.2mm, and by
3240 epoxy plates (laminated epoxy glass-cloth board) are made.
It is printing product raw material with polypropylene (T30S), the cuboid batten that printing product 3 is 80 × 10 × 4 (mm) is adopted
With 230 DEG C of print temperatures, print platform temperature is 20 DEG C, measure the height that actually enters in hole of fused materials is porous plate
The 100% of thickness, provide according to the present invention using above-mentioned porous plate 1 when further increase in the method for stamp with the size precision
The printing product height H for needing to compensate because of porous 2 consumable material of plate holes is calculated in compensation formula2For 0.275mm, H1For 4mm
(see Fig. 3,4), the compensated CAD model overall height H of the present embodiment should be 4.275mm, after the completion of miking must print
Product height is 4.007mm.
Embodiment 4
As shown in Figure 1, 2, porous plate 1 provided in this embodiment is also a rectangular plate, plate thickness h=3mm, is distributed in plate face
Multiple perforated holes 2 are provided with, perforated holes 2 are bellmouth, and each cross sectional shape through taper hole 2 is in antiparallelogram,
Base angle is 45 °, and upper aperture radius r is 1mm, and lower aperture radius R is 4mm, and adjacent two pitchs of holes t is 5mm, and by 3240 epoxies
Plate (laminated epoxy glass-cloth board) is made.
It is printing product raw material with polypropylene (T30S), the cuboid batten that printing product 3 is 80 × 10 × 4 (mm) is adopted
With 230 DEG C of print temperatures, print platform temperature is 20 DEG C, measure the height that actually enters in hole of fused materials is porous plate
The 80% of thickness, provide according to the present invention using above-mentioned porous plate 1 when further increase in the method for stamp with the size precision
The printing product height H for needing to compensate because of porous 2 consumable material of plate holes is calculated in compensation formula2For 0.064mm, H1For
4mm, the compensated CAD model overall height H of the present embodiment should be 4.064mm, and the product after the completion of miking must print is high
Degree is 4.002mm.
Comparative example 1
A kind of perforated plate construction preventing product alice in FDM forming process in the prior art is as follows: plate thickness h=
0.5mm, through hole are straight hole, and each cross sectional shape through taper hole is in rectangle, radius R=0.15mm, between adjacent two hole
Away from t=0.8mm, it is made of glass.
It is printing product raw material with polypropylene (T30S), the cuboid batten that printing product is 80 × 10 × 4 (mm) uses
230 DEG C of print temperatures, print platform temperature are 20 DEG C, and the product height after the completion of miking must print is 3.945mm.
Comparative example 2
Another kind in the prior art prevents the perforated plate construction of product alice in FDM forming process as follows: plate thickness h=
3mm, through hole are straight hole, radius R=1.5mm, and adjacent two pitchs of holes t=8mm is made of aluminium alloy.
It is printing product raw material with polypropylene (T30S), the cuboid batten that printing product is 80 × 10 × 4 (mm) uses
230 DEG C of print temperatures, print platform temperature are 20 DEG C, and the product height after the completion of miking must print is 3.975mm.
Comparative example 3
Another kind in the prior art prevents the perforated plate construction of product alice in FDM forming process as follows: plate thickness h=
1.5mm, through hole are straight hole, and each cross sectional shape through taper hole is in rectangle, radius R=0.25mm, adjacent two hole
Spacing t=2.0mm is made of FR4 epoxy resin.
It is printing product raw material with polypropylene (T30S), the cuboid batten that printing product is 80 × 10 × 4 (mm) uses
230 DEG C of print temperatures, print platform temperature are 20 DEG C, and the product height after the completion of miking must print is 3.937mm.
Comparative example 4
Another kind in the prior art prevents the perforated plate construction of product alice in FDM forming process as follows: plate thickness h=
3mm, through hole are straight hole, and each cross sectional shape through taper hole is in rectangle, radius R=1mm, adjacent two pitchs of holes t
=5mm is made of FR4 epoxy resin.
It is printing product raw material with polypropylene (T30S), the cuboid batten that printing product is 80 × 10 × 4 (mm) uses
230 DEG C of print temperatures, print platform temperature are 20 DEG C, and the product height after the completion of miking must print is 3.930mm.
In order to investigate the technical effect of porous plate of the present invention, difference comparative example 1 and comparative example 1, embodiment 2 and comparison
Example 2, embodiment 3 and comparative example 3 all using polypropylene (T30S) printing standard impulse batten (GB1043), sample be 80 × 10 ×
The cuboid of 4 (mm), using 230 DEG C of print temperatures, print platform temperature is 20 DEG C, is beaten after the completion of printing with 3D scanner scanning
Printed document, and the curvature of printout is obtained with circle fitting warped surface, the buckling deformation situation of printout is reacted with this.As a result see attached
Fig. 6 and following table, curvature is bigger, and buckling deformation degree is higher.
Table
| Sample | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Curvature K | 0.0003 | 0.00037 | 0.00017 |
| Sample | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Curvature K | 0.025 | 0.010 | 0.018 |
The fixed sample of the porous plate provided it can be seen from upper table result by the embodiment of the present invention is provided than comparative example
The fixed sample curvature of the porous plate of the prior art can be greatly reduced with small two orders of magnitude, i.e. buckling deformation degree；And implement
After example compensates model height according to formula, the dimensional accuracy of printing product in the height direction is greatly improved.Therefore originally
Invention limits the porous plate of specific structure, can be realized the good fixation of product in FDM forming process, largely improves system
The alice behavior of product；Under lower platform temperature, anti-alice effect is particularly evident.Also, the specific structure that the present invention limits
Porous plate, have property preferably easy to clean, porous plate can be improved recycles efficiency.
Claims (6)
1. a kind of for preventing the porous plate of product alice in FDM print procedure, which is a rectangular plate (1), plate face
Upper distribution is provided with multiple perforated holes (2), it is characterised in that perforated holes (2) are bellmouth, each through taper hole (2)
Cross sectional shape is in antiparallelogram, and base angle is 45 °~80 °.
2. according to claim 1 for preventing the porous plate of product alice in FDM print procedure, it is characterised in that described
The plate thickness h of porous plate (1) is 0.5~4mm；Adjacent two hole (2) spacing t is 0.8~14mm in plate face；Each hole (2)
Upper aperture radius r is 0.15~1.5mm, and lower aperture radius R is 0.24~5.5mm.
3. according to claim 1 for preventing the porous plate of product alice in FDM print procedure, it is characterised in that described
The plate thickness h of porous plate (1) is 1.5~3mm；Adjacent two hole (2) spacing t is 2~5mm in plate face；The upper hole of each hole (2)
Port radius r is 0.25~1.0mm, and lower aperture radius R is 0.51~4.0mm.
4. according to claim 1 or 2 or 3 for preventing the porous plate of product alice in FDM print procedure, feature exists
Any material in porous plate selection glass, metal, polymer material is made.
5. a kind of use the method for further increasing stamp with the size precision described in claim 1 when porous plate, it is characterised in that should
Method is when carrying out solid modelling before printing, and the quantity of material for according to the following formula consuming hole on porous plate is converted into benefit
The product height repaid adjusts CAD integral mould total height with this:
In formula: H is compensated CAD model total height；
H1For the design height for printing product；
H2For the printing product height for needing to compensate because of porous plate holes consumable material；
S1For the area for printing product and porous plate contact surface；
V is the total volume of porous plate consumable material,
V=n × V1；
hsEnter the depth of single hole for material；
N is the numbers of hole for printing product and porous plate contact surface and covering；
V1For the volume for entering material in single hole；
T is the distance between adjacent two holes center line on porous plate；
R is the radius in aperture on the upper conical hole of porous plate；
α is the base angle angle of porous plate bellmouth cross sectional shape antiparallelogram.
6. according to claim 5 use the side for further increasing stamp with the size precision described in claim 1 when porous plate
Method, it is characterised in that h described in this methods≤ h, h are the thickness of porous plate, hsThe specially 20- of porous plate thickness h
100%.
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| CN201910012610.6A CN109483871B (en) | 2019-01-07 | 2019-01-07 | Perforated plate for preventing edge warping of FDM printed product and method for further improving printing size precision |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481013A (en) * | 2019-09-27 | 2019-11-22 | 西安增材制造国家研究院有限公司 | A kind of easy pickup polymer three-dimensional printing bottom plate of large scale warpage preventing and Method of printing |
| CN110654025A (en) * | 2019-10-17 | 2020-01-07 | 长春市莱宝科技有限公司 | 3D printer founds reinforcing apparatus that platform was used to prevent to print model first layer deformation |
| CN111531886A (en) * | 2020-05-06 | 2020-08-14 | 南方医科大学深圳医院 | Warping-proof three-dimensional printing platform |
| CN111890673A (en) * | 2019-05-05 | 2020-11-06 | 上海普利生机电科技有限公司 | Three-dimensional printing method and apparatus |
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| CN110481013A (en) * | 2019-09-27 | 2019-11-22 | 西安增材制造国家研究院有限公司 | A kind of easy pickup polymer three-dimensional printing bottom plate of large scale warpage preventing and Method of printing |
| CN110654025A (en) * | 2019-10-17 | 2020-01-07 | 长春市莱宝科技有限公司 | 3D printer founds reinforcing apparatus that platform was used to prevent to print model first layer deformation |
| CN111531886A (en) * | 2020-05-06 | 2020-08-14 | 南方医科大学深圳医院 | Warping-proof three-dimensional printing platform |
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| CN109483871B (en) | 2023-06-02 |
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