CN106915076B - A kind of lift height design method suitable for fused glass pellet - Google Patents
A kind of lift height design method suitable for fused glass pellet Download PDFInfo
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- CN106915076B CN106915076B CN201710332630.2A CN201710332630A CN106915076B CN 106915076 B CN106915076 B CN 106915076B CN 201710332630 A CN201710332630 A CN 201710332630A CN 106915076 B CN106915076 B CN 106915076B
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- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000013461 design Methods 0.000 title claims abstract description 34
- 239000011521 glass Substances 0.000 title claims abstract description 26
- 239000008188 pellet Substances 0.000 title claims abstract description 26
- 238000013517 stratification Methods 0.000 claims abstract description 6
- 238000007639 printing Methods 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 10
- 230000011218 segmentation Effects 0.000 claims description 6
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 claims description 3
- 230000002596 correlated effect Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 abstract description 8
- 230000002787 reinforcement Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention discloses a kind of lift height design methods suitable for fused glass pellet, specifically comprise the following steps: step 1, step 2 setting design parameter determines the altitude range in each face；Step 3, the length value l in height section is determinedjWith minimum angle-of-incidence θj, step 4, seek the lift height h in j-th of height sectionj；Step 5, the stratification range in j-th of height section is sought；Step 6, the most Xiao Zhou number z in j-th of height section is soughtmin·j；Step 7, lift height counting period coefficient k in j-th of height section is soughtj；Step 8, to the most Xiao Zhou number z in j-th of height sectionmin·jWith interval coefficient kjIt is modified；Step 9, j-th of height section is asked to fill the place level number Y, filling week number Z and the layer week number Z ' without filling inner ring of inner ring.The present invention opposite can reduce the print time, improve shaping efficiency.
Description
Technical field
The invention belongs to molding fabrication techniques fields, are related to a kind of lift height design side suitable for fused glass pellet
Method.
Background technique
With the development of increases material manufacturing technology, fused glass pellet technology is regarded as a kind of rapid shaping and only at molding
Novel processing method, Forming Quality for part and shaping efficiency concern gradually increase.It is analyzed from processing technology, part
Forming Quality and shaping efficiency are largely influenced by lift height.Currently, in quick shaping process and molding system
In system, lift height lacks mathematics method and theory support obtained by operator's experience.
Such a lift height design side is described in " optimization of 3D printing fabrication orientation and hierarchical algorithm research " text
Method.This method is arranged corresponding threshold value and divides by calculating layered plane normal vector and forming part surface normal magnitude relation,
Calculate the lift height size that processing part position should use.Lift height design method can be arranged for different surfaces in this way
Different lift heights improve piece surface formed precision to a certain extent, but there is also clearly disadvantageous: 1. this designs
The size for each skin lamination thickness that method is only distinguished relatively, specific value are still obtained by experience；2. this design method is only
Suitable for the identical part of surface angle each in sustained height section, adaptability is insufficient；It is improved 3. a consideration reduces lift height
Formed precision but reduces shaping efficiency.
Summary of the invention
The object of the present invention is to provide a kind of lift height design methods suitable for fused glass pellet, using this method
Lift height not only can be suitably printed for piece surface characteristic Design and improves formed precision, but also opposite can be reduced and be beaten
The time is printed, shaping efficiency is improved.
The technical scheme adopted by the invention is that a kind of lift height design method suitable for fused glass pellet, tool
Body includes the following steps:
Step 1, design parameter is set, specifically:
Maximum step effect missing area S, the molding equipment of given forming part print fuse widths B, molding equipment most
Big printing lift height hmax, molding equipment minimum print lift height hmin, each section bus of forming part be straight line face incline
Angle φi, wherein i is the number in the face that each section bus of forming part is straight line, and i is the integer more than or equal to 1, φiFor at
The angle of type plane face normal vector and printing table top normal vector；
Step 2, the altitude range in each face of forming part is determined；
Step 3, the length value l in j-th of part height section of part is determinedjWith minimum angle-of-incidence θj, wherein j is height section
Number and be integer greater than 0, the height section of part is successively numbered from the bottom up using Arabic numerals；
Step 4, according to the minimum angle-of-incidence θ in step 3 resulting j-th of height sectionjAsk the layering in j-th of height section
Thickness hj；
Step 5, the stratification range in j-th of height section is sought according to the resulting result of step 4；
Step 6, the most Xiao Zhou number z in j-th of height section is soughtmin·j；
Step 7, lift height counting period coefficient k in j-th of height section is soughtj；
Step 8, to the most Xiao Zhou number z in j-th of height sectionmin·jWith interval coefficient kjIt is modified；
Step 9, determine that j-th of height section of forming part will fill place level number Y, the filling week number Z of inner ring and not have to
Fill the layer week number Z ' of inner ring.
The features of the present invention also characterized in that
Wherein detailed process is as follows for step 2:
Specifically: for the feature of geometry outside forming part, it is divided into the face and section bus that section bus is straight line
For two kinds of the face situation of curve；
It a) is the face of straight line for section bus, the altitude range in face is the printing table top normal vector of the origin-to-destination in face
The distance in direction；
B) it is the face of curve for section bus, curved surface is subjected to equidistant cutting, cutting along the direction perpendicular to horizontal plane
Quantity is m a, and cutting density degree and final molding surface quality are positively correlated, after cutting is completed, from vertical segmentation lines and song
The point of intersection level in face is crossed to get the altitude range of m curved surface.
Wherein detailed process is as follows for step 3:
According to step 2 determine as a result, by each face altitude range to printing table top normal vector direction projection by part
Several height sections are divided into, and determine j-th of part height siding-to-siding block length value lj, ljThat is j-th of height section is for printing
The length value of table top normal vector direction projection；
Enable the declination angle for being located at the face that j-th of part height section inner section bus is straight lineq, wherein q ∈'s (1, i) is whole
Number is the face of curve for section bus, enables the equidistant segmentation lines being located in j-th of part height section and cross section curve intersection point
The inclination angle at place is βp, the wherein integer of p ∈ (1, m), in φqAnd βpIt is middle to choose the inclination angle theta that minimum value is j-th of height sectionj。
Wherein detailed process is as follows for step 4:
H is sought by following formula (1)j:
Wherein, S is that the maximum step effect of forming part lacks area；
Due to θjFor the minimum angle-of-incidence in j-th of height section, so hjIt is thick for the minimum layering in j-th of height section
Degree retains decimal digits by equipment machining accuracy, works as hj< hminWhen, i.e., process equipment minimum lift height, which is greater than, calculates gained
Minimum lift height when, take hj=hmin, otherwise hj≥hmin, then the lift height in j-th of height section is calculated value itself
hj。
Wherein detailed process is as follows for step 5:
Step 5.1, the hierarchy number in j-th of height section is sought by following formula (2):
Step 5.2, the residual altitude Δ h in j-th of height section is sought by following formula (3)j:
Δhj=lj-Cj×hj(3)；
If residual altitude Δ hjIt is not 0, then most upper two layers of the shape layer and residual altitude Δ h in j-th of height sectionjIt closes
And be 3 formable layer layers,
Step 5.3, enable step 5.2 merge after 3 formable layer layers with a thickness of h ', h ' is asked by following formula (4):
If h ' < hminThen h '=hminIf h ' > hmin, then h ' is formula (4) resulting calculated value itself；
Step 5.4, if residual altitude Δ hjIt is not 0, the shape layer in j-th of height section is sought by following formula (5)
Number C 'jAre as follows:
C′j=Cj+1 (5)；
If residual altitude Δ hjIt is 0, then C 'j=Cj；
Step 5.5, the level number range for determining j-th of height section is Hj(yj, yj+C′j), wherein yjIndicate j-th of height
The starting level number in section, yj+C′jIndicate the termination level number in j-th of height section.
Wherein detailed process is as follows for step 6:
Most Xiao Zhou's number z in j-th of height section of forming part is sought by following formula (6)min·j:
Wherein detailed process is as follows for step 7:
Lift height counting period coefficient k in j-th of height section is sought by following formula (7)j:
Wherein, kjTake the integer less than or equal to 4, and kjNot equal to 0, work as kj4 are taken when > 4.
Wherein detailed process is as follows for step 8:
Step 8.1, the judgement before being modified, specifically:
The critical angle α in j-th of height section of forming part is sought by formula (8)sj:
Work as θj< αsiWhen, then the parameter in j-th of height section is modified, on the contrary θj≥αsjWhen, then it is not required to repair
Just；
Step 8.2, to through step 8.1 judgement after the parameter to be modified be modified, specifically:
The most Xiao Zhou number z in j-th of height section is corrected by following formula (9)min·j:
If zmin·j> 10, then zmin·j=10；Correcting the interval coefficient in j-th of height section is kj=1.
Wherein detailed process is as follows for step 9:
J-th of height section of forming part is asked to fill the place level number Y of inner ring by following formula (10):
Y=yj+n×kj≤yj+C′j(10)；
Wherein, n is positive integer；
By following formula (11) ask j-th of height section to fill inner ring layer all numbers:
Z=2 × zmin·j(11)；
Without layer week number the Z '=z for filling inner ringmin·j。
Beneficial effects of the present invention are the lift height design side proposed by the present invention suitable for fused glass pellet processing
Method passes through each surface geometrical property of analysis forming part and combines surface quality of workpieces requirement, devises different suitable points
Thickness degree.Simultaneously in order to reduce process time under the premise of not influencing Forming Quality, change the filling week of conventional fixed value
Number, and shaping efficiency is not only increased, also with respect to the material of reduction using interval filling inner ring form at different lift heights
The consumption of material.
Detailed description of the invention
Fig. 1 is to lack a kind of lift height design method suitable for fused glass pellet of the present invention about step effect
The schematic diagram of area S；
Fig. 2 is inclined surface altitude range a kind of lift height design method suitable for fused glass pellet of the present invention
Schematic diagram；
It is straight for section bus that Fig. 3, which is a kind of lift height design method suitable for fused glass pellet of the present invention,
The height interval division schematic diagram in the face of line；
It is bent for section bus that Fig. 4, which is a kind of lift height design method suitable for fused glass pellet of the present invention,
The height interval division schematic diagram in the face of line；
Fig. 5 is filling inner ring method in interval a kind of lift height design method suitable for fused glass pellet of the present invention
Schematic diagram；
Fig. 6 is the first embodiment part a kind of lift height design method suitable for fused glass pellet of the present invention
Model outside drawing；
Fig. 7 is second of embodiment part a kind of lift height design method suitable for fused glass pellet of the present invention
Model outside drawing；
Fig. 8 is second of embodiment height a kind of lift height design method suitable for fused glass pellet of the present invention
Interval division schematic diagram.
In figure, the entity part of 1. forming parts, 2. forming part theoretical profiles, 3. step effects missing area S, 4. incline
Inclined-plane, 5. print platforms, 6 print platform normal vector directions, 7 inclined surface altitude ranges, 8. inner rings are without filled layer, the filling of 9. inner rings
Layer, the small lift height print zone in 10. surfaces, the big lift height print zone in 11. inside.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of lift height design method suitable for fused glass pellet of the present invention, this method are not related to horizontal plane
Layering, specifically comprises the following steps:
Step 1, design parameter is set, specifically:
Maximum step effect missing area S (referring to Fig. 1) of given forming part, molding equipment printing fuse widths B, at
Type equipment maximum printing lift height hmax, molding equipment minimum print lift height hmin, each section bus of forming part be straight
The face declination angle of linei, wherein i is the number in the face that each section bus of forming part is straight line, and i is whole more than or equal to 1
Number, φiFor the angle of molding flat face normal vector and printing table top normal vector；
Step 2, the altitude range (for the definition of each face height) in each face of forming part is determined；
Detailed process is as follows for step 2:
Specifically: for the feature of geometry outside forming part, being divided into face that section bus is straight line, (i.e. face inclination angle is not
With height change) and section bus be curve two kinds of face (i.e. face inclination angle is with height change) situation；
It a) is the face of straight line for section bus, the altitude range in face is the printing table top normal vector of the origin-to-destination in face
The distance (referring to fig. 2, Fig. 3) in direction；
B) it is the face of curve for section bus, curved surface is subjected to equidistant cutting, cutting along the direction perpendicular to horizontal plane
Quantity is m a, and cutting density degree and final molding surface quality are positively correlated, after cutting is completed, from vertical segmentation lines and song
The point of intersection level in face is crossed to get the altitude range (referring to fig. 4) of m curved surface.
Step 3, the length value l in j-th of part height section of part is determinedjWith minimum angle-of-incidence θj(for determining for part height
Justice), wherein j is the number in height section and for integer greater than 0, the height section of part using Arabic numerals successively from
Under be up numbered；
Wherein detailed process is as follows for step 3:
According to step 2 determine as a result, by each face altitude range to printing table top normal vector direction projection by part
Several height sections are divided into, and determine j-th of part height siding-to-siding block length value lj, ljThat is j-th of height section is for printing
The length value of table top normal vector direction projection；
Enable the declination angle for being located at the face that j-th of part height section inner section bus is straight lineq, wherein q ∈'s (1, i) is whole
Number is the face of curve for section bus, enables the equidistant segmentation lines being located in j-th of part height section and cross section curve intersection point
The inclination angle at place is βp, the wherein integer of p ∈ (1, m), in φqAnd βpIt is middle to choose the inclination angle theta that minimum value is j-th of height sectionj。
Step 4, according to the minimum angle-of-incidence θ in step 3 resulting j-th of height sectionjAsk the layering in j-th of height section
Thickness hj；
Wherein detailed process is as follows for step 4:
H is sought by following formula (1)j:
Wherein, S is that the maximum step effect of forming part lacks area；
Due to θjFor the minimum angle-of-incidence in j-th of height section, so hjIt is thick for the minimum layering in j-th of height section
Degree retains decimal digits by equipment machining accuracy, works as hj< hminWhen, i.e., process equipment minimum lift height, which is greater than, calculates gained
Minimum lift height when, take hj=hmin, otherwise hj≥hmin, then the lift height in j-th of height section is calculated value itself
hj。
Step 5, the stratification range in j-th of height section is sought according to the resulting result of step 4；
Wherein detailed process is as follows for step 5:
Step 5.1, the hierarchy number in j-th of height section is sought by following formula (2):
Step 5.2, the residual altitude Δ h in j-th of height section is sought by following formula (3)j:
Δhj=lj-Cj×hj(3)；
If residual altitude Δ hjIt is not 0, then most upper two layers of the shape layer and residual altitude Δ h in j-th of height sectionjIt closes
And be 3 formable layer layers,
Step 5.3, enable step 5.2 merge after 3 formable layer layers with a thickness of h ', h ' is asked by following formula (4):
If h ' < hminThen h '=hminIf h ' > hmin, then h ' is formula (4) resulting calculated value itself；
Step 5.4, if residual altitude Δ hjIt is not 0, the shape layer in j-th of height section is sought by following formula (5)
Number C 'jAre as follows:
C′j=Cj+1 (5)；
If residual altitude Δ hjIt is 0, then C 'j=Cj；
Step 5.5, the level number range for determining j-th of height section is Hj(yj, yj+C′j), wherein yjIndicate j-th of height
The starting level number in section, yj+C'jIndicate the termination level number in j-th of height section.
Step 6, the most Xiao Zhou number z in j-th of height section is soughtmin·j(all numbers refer to that forming part outer profile fills number)；
Wherein detailed process is as follows for step 6:
Most Xiao Zhou's number z in j-th of height section of forming part is sought by following formula (6)min·j:
Step 7, lift height counting period coefficient k in j-th of height section is soughtj；
Wherein detailed process is as follows for step 7:
Lift height counting period coefficient k in j-th of height section is sought by following formula (7)j:
Wherein, kjTake the integer less than or equal to 4, and kjNot equal to 0, work as kj4 are taken when > 4.
Step 8, to the most Xiao Zhou number z in j-th of height sectionmin·jWith interval coefficient kjIt is modified；
Wherein detailed process is as follows for step 8:
Step 8.1, the judgement before being modified, specifically:
The critical angle α in j-th of height section of forming part is sought by formula (8)sj:
Work as θj< αsiWhen, then the parameter in j-th of height section is modified, on the contrary θj≥αsjWhen, then it is not required to repair
Just；
Step 8.2, to through step 8.1 judgement after the parameter to be modified be modified, specifically:
The most Xiao Zhou number z in j-th of height section is corrected by following formula (9)min·j:
If zmin·j> 10, then zmin·j=10；
Correcting the interval coefficient in j-th of height section is kj=1.
Step 9, determine that j-th of height section of forming part will fill place level number Y, the filling week number Z of inner ring and not have to
Fill the layer week number Z ' of inner ring.
Wherein detailed process is as follows for step 9:
J-th of height section of forming part is asked to fill the place level number Y of inner ring by following formula (10):
Y=yj+n×kj≤yj+C′j(10)；
Wherein, n is positive integer；
By following formula (11) ask j-th of height section to fill inner ring layer all numbers:
Z=2 × zmin·j(11)；
Without layer week number the Z '=z for filling inner ringmin·j, referring to Fig. 5.
Part, which is respectively layered, can be divided into two types, and inner ring filled layer 9 and inner ring are without filling as schemed in inner ring filled layer such as Fig. 5
Inner ring is without filled layer 8 in 5.Wherein inner ring filled layer includes the small lift height print zone 10 in surface shown in Fig. 5 and big point of inside
Thickness degree print zone 11, and inner ring only includes the small lift height print zone 10 in surface in Fig. 5 without filled layer.
Embodiment 1
Step 1, it gives step effect and lacks area S=0.04mm2, the wide 0.4mm of locking equipment print wire is given, most to locking equipment
Big printing lift height 0.4mm minimum prints lift height 0.1mm precision 0.01mm, gives each face inclination angle of Fig. 6 institute representation model
With the height in face, the inclination angle of face 1 (M1) is 90 °, and the inclination angle of face 2 (M2) is 60 °, and the inclination angle of face 3 (M3) is 90 °, face 4 (M4's)
Inclination angle is 90 °, and the inclination angle of face 5 (M5) is 65 °, and the inclination angle of face 6 (M6) is 90 °, and the inclination angle of face 7 (M7) is 90 °, face 8 (M8's)
Inclination angle is 90 °, and the inclination angle of face 9 (M9) is 6.5 °, and the inclination angle of face 10 (M10) is 90 °, and the inclination angle of face 11 (M11) is 180 ° (horizontal
Face)；(referring to Fig. 6, wherein (a) is part front view, (b) it is part left view, (c) is part top view, be (d) part etc.
Axonometric drawing)
Step 2, the altitude range in each face is determined:
The height at each the face inclination angle and face of given Fig. 6 institute representation model, the altitude range 0mm~13.94mm of face 1 (M1), face 2
(M2) altitude range 0mm~11.75mm, face 3 (M3) altitude range 0mm~11.75mm, the altitude range 0mm of face 4 (M4)~
11.75mm, the altitude range 0mm~16.38mm of face 5 (M5), the altitude range 0mm~16.38mm of face 6 (M6), face 7 (M7's)
Altitude range 0mm~18.5mm, the altitude range 0mm~18.5mm of face 8 (M8), the altitude range 13.94mm of face 9 (M9)~
18.5mm, the altitude range 10mm~18.5m of face 10 (M10), face 11 (M11) are that horizontal plane does not consider
Step 3, determine that part whole height section takes minimum angle-of-incidence and height section height value according to step 2 result；
Height section 0-10mm includes face inclination alpha1=α3=α4=α6=α7=α8=90 °, α2=65 °, α5=60 °, section
60 ° of minimum angle-of-incidence；Height section 10-11.75mm includes face inclination alpha1=α3=α4=α6=α7=α8=90 °, α2=65 °, α5α
60°、α10=12 °, 12 ° of section minimum angle-of-incidence；Height section 11.75-13.94mm includes face inclination alpha1=α3=α4=α6=α7
=α8=90 °, α2=65 °, α10=12 °, 12 ° of section minimum angle-of-incidence；Height section 13.94-16.38mm includes face inclination alpha1=
α3=α4=α6=α7=α8=90 °, α2=65 °, α10=12 °, α9=6.5 °, 6.5 ° of section minimum angle-of-incidence；Height section
16.38-18.5mm including face inclination alpha7=α8=90 °, α10=12 °, α9=6.5 °, 6.5 ° of section minimum angle-of-incidence；According to inclination angle phase
With lift height distribution is merged, obtained after merging:
When j=1, height section 1:0-10mm, section inclination angle theta1=60 °, height value l1=10mm,
When j=2, height section 2:10-13.94mm, section inclination angle theta2=12 °, height value l2=3.94mm,
When j=3, height section 3:13.94-18.5mm, section inclination angle theta3=6.5 °, height value l3=4.56mm.
Step 4, the lift height in each height section is sought；
When j=1, height section 1:0.37mm is taken in fact,
When j=2, height section 2:0.13mm is taken in fact,
When j=3,
Height section 3:0.1mm is taken in fact.
Step 5, each height section stratification range is sought；
When j=1, height section 1:Reinforcement Δ h1=10-27 × 0.37=0.01, then this height
Most end three layers of lift height in section recalculate, i.e., and 26,27,28 layers of lift height are
When j=2, height section 2:Reinforcement Δ h2=3.94-30 × 0.13=0.04 then this height
Most end three layers of lift height in section recalculate, i.e., 57,58,59 layers of lift height are
When j=3, height section 3:Reinforcement Δ h3The then height area=4.56-45 × 0.1=0.06
Between three layers of lift height of most end recalculate, i.e., 103,104,105 layers of lift height are
Take 0.1mm.
Determine height section level number range: H1 (1,28), H2 (29,59), H3 (60,105).
Step 6, each height section shell most Xiao Zhou's number is sought；
When j=1,1 shell of height section most Xiao Zhou's number
When j=2,2 shell of height section most Xiao Zhou's number
When j=3,3 shell of height section most Xiao Zhou's number
Step 7, each height interval coefficient is sought；
When j=1,1 interval coefficient of height section:
When j=2,2 interval coefficient of height section:
When j=3,3 interval coefficient of height section:
Step 8, in each height section most Xiao Zhou number and interval coefficient be modified；
The critical inclination in computed altitude section 1 (j=1) Without repairing
Just；
The critical inclination in computed altitude section 2 (j=2) Without repairing
Just；
The critical inclination in computed altitude section 3 (j=3) It needs to repair
Just, modified parameter is needed to have: most Xiao Zhou's number Interval coefficient K3=1.
Step 9, determine that each height section of forming part will fill place level number Y, the filling week number Z of inner ring and not have to filling
The layer week number Z ' of inner ring.
In height section 1 (j=1), the level number that need to fill inner ring is: Y=1+k1 × n≤28 (n=0,1,2 ...) i.e. Y
All number Z=2.0 × zmin1=2 of=1,2,3 ... 28 layer, remainder layer week number are Z '=zmin1=1.
In height section 2 (j=2), the level number that need to fill inner ring is: Y=51+k2× n≤81 (n is positive integer) i.e. Y
All number Z=2 × z of=29,32,35 ... 59 layermin·1=4, remainder layer week number is Z '=zmin2=2.
In height section 3 (j=3), the level number that need to fill inner ring is:
Y=82+k3× n≤127 (n is positive integer),
That is Y=60, all number Z=2 × z of 61,62 ... 105 layermin·3=12, remainder layer week number is Z '=zmin3=
6。
Embodiment 2
Step 1, it gives step effect and lacks area S=0.02mm2, to the wide 0.4mm of locking equipment print wire to locking equipment most
Big printing lift height 0.4mm minimum prints lift height 0.1mm precision 0.01mm, gives each face inclination angle of Fig. 5 institute representation model
With the height in face, the inclination angle of face 1 (M1) is 180 ° (horizontal plane)；The inclination angle in face 2 (M2) is 90 °, and the inclination angle of face 3 (M3) is 75 °,
The inclination angle in face 4 (M4) is 45 °, and the inclination angle of face 5 (M5) is 90 °, and the inclination angle of face 6 (M6) is 0 ° (horizontal plane), while including one
Curved surface, inclination angle are the hemisphere curved surface of 0 ° of -90 ° of altitude range 0mm~20mm.(referring to Fig. 7, wherein (a) is part front view, (b)
(c) it is part top view for part left view, (d) is part normal axomometric drawing)
Step 2, each face altitude range is determined,
Have for the face that section bus is straight line: face 1 (M1) horizontal plane does not consider；The altitude range 0mm in face 2 (M2)~
14mm, the altitude range 0mm~9mm of face 3 (M3), the altitude range 9mm~14mm of face 4 (M4), the altitude range of face 5 (M5)
The horizontal plane of 0mm~14mm, face 6 (M6) do not consider,
Curved surface contained in part (step 1 mean camber) is carried out along 6 equal parts perpendicular to lift height direction, by its stroke
It is divided into 6 sections of curved surfaces, and taking minimum angle-of-incidence is the face inclination angle.The inclination angle of curved surface 1 is β1=56.5 ° of altitude range 0mm~11mm, it is bent
The inclination angle in face 2 is β2=41.5 ° of altitude range 11mm~15mm, the inclination angle of curved surface 3 are β3=30 ° of altitude range 15mm~
17.3mm, the inclination angle of curved surface 4 are β4=19.5 ° of altitude range 17.3mm~18.8mm, the inclination angle of curved surface 5 are β5=9.5 ° of height
Range 18.8mm~19.7mm, the angle of inclination beta of curved surface 66Approach 0 ° of altitude range 19.7mm~20mm.(ginseng can be obtained after dividing curved surface
See Fig. 8):
Step 3, determine that part whole height section takes minimum angle-of-incidence and height section height value according to step 2 result；
Height section 0-9mm includes face inclination alpha2=α5=90 °, α3=75 °, β1=56.5 °, section minimum angle-of-incidence
56.5°；Height section 9-11mm includes face inclination alpha2=α5=90 °, β1=56.5 °, α4=45 °, 45 ° of section minimum angle-of-incidence；It is high
Spending section 11-14mm includes face inclination alpha2=α5=90 °, α4=45 °, β2=41.5 °, 41.5 ° of section minimum angle-of-incidence；Height area
Between 14-15mm include face angle of inclination beta2=41.5 °, 41.5 ° of section minimum angle-of-incidence；Height section 15-17.3mm includes face angle of inclination beta3=
30 °, 30 ° of section minimum angle-of-incidence；Height section 17.3-18.8mm includes face angle of inclination beta4=19.5 °, 19.5 ° of section minimum angle-of-incidence；
Height section 18.8-19.7mm includes face angle of inclination beta5=9.5 °, 9.5 ° of section minimum angle-of-incidence；Height section 19.7-20mm includes
Face angle of inclination beta6=0 °, 0 ° of section minimum angle-of-incidence；
After synthesis:
When j=1, height section 1:0-9mm, section inclination angle theta1=56.5 °, height value l1=9mm,
When j=2, height section 2:9-11mm, section inclination angle theta2=45 °, height value l2=2mm,
When j=3, height section 3:11-15mm, section inclination angle theta3=41.5 °, height value l3=4mm,
When j=4, height section 4:15-17.3mm, section inclination angle theta4=30 °, height value l4=2.3mm,
When j=5, height section 5:17.3-18.8mm, section inclination angle theta5=19.5.5 °, height value l5=1.5mm,
When j=6, height section 6:18.8-19.7mm, section inclination angle theta6=9.5 °, height value l6=0.9mm,
When j=7, height section 7:19.7-20mm, section inclination angle theta7=0 °, height value l7=0.3mm,
Step 4, the lift height in each height section is sought；
When j=1, height section 1:0.25mm is taken in fact,
When j=2, height section 2:0.2mm is taken in fact,
When j=3, height section 3:0.18mm is taken in fact,
When j=4, height section 4:0.15mm is taken in fact,
When j=5, height section 5:0.12mm is taken in fact,
When j=6, height section 6:
h6< hmin0.1mm is taken in fact,
When j=7, height section 7:
h7< hmin0.1mm is taken in fact.
Step 5, each height section stratification range is sought；
When j=1, height section 1:Reinforcement Δ h1=9-36 × 0.25=0
When j=2, height section 2:Reinforcement Δ h2=2-10 × 0.2=O
When j=3, height section 3:Reinforcement Δ h3=4-22 × 0.18=0.04 calculates reinforcement Δ h3=
Then three layers of lift height of height section most end recalculate, i.e., 67,68,69 layers of lift height are
0.13mm is taken,
When j=4, height section 4:Reinforcement Δ h4=2.3-15 × 0.15=0.05 then this height
Most end three layers of lift height in section recalculate, i.e., 83,84,85 layers of lift height areIt takes
0.12mm,
When j=5, height section 5:Reinforcement Δ h5=1.5-12 × 0.12=0.06 then height
Degree three layers of lift height of section most end recalculate, i.e., 96,97,98 layers of lift height areIt takes
0.1mm,
When j=6, height section 6:
When j=7, height section 7:
And determine height section level number range: H1(1,36), H2(37,46), H3(47,69), H4(70,85), H5(86,
98)、H6(99,107), H7(108,110).
Step 6, each height section shell most Xiao Zhou's number is sought；
When j=1,1 shell of height section most Xiao Zhou's number
When j=2,2 shell of height section most Xiao Zhou's number
When j=3,3 shell of height section most Xiao Zhou's number
When j=4,4 shell of height section most Xiao Zhou's number
When j=5,5 shell of height section most Xiao Zhou's number
When j=6,6 shell of height section most Xiao Zhou's number
When j=7,7 shell of height section most Xiao Zhou's number
Step 7, each height interval coefficient is sought；
When j=1,1 interval coefficient of height section:
When j=2,2 interval coefficient of height section:
When j=3,3 interval coefficient of height section:
When j=4,4 interval coefficient of height section:
When j=5,5 interval coefficient of height section:
When j=6,6 interval coefficient of height section:
When j=7,7 interval coefficient of height section:
Step 8, in each height section most Xiao Zhou number and interval coefficient be modified；
The critical inclination in computed altitude section 1 (j=1) Do not have to
Amendment；
The critical inclination in computed altitude section 2 (j=2) Without repairing
Just；
The critical inclination in computed altitude section 3 (j=3) Do not have to
Amendment；
The critical inclination in computed altitude section 4 (j=4) Without repairing
Just；
The critical inclination in computed altitude section 5 (j=5) Do not have to
Amendment；
The critical inclination in computed altitude section 6 (j=6) Without repairing
Just；
The critical inclination in computed altitude section 7 (j=7)Have in section
Small inclination face needs to correct, and modified technological parameter is needed to have: zmin·7> 10 takes
10, interval coefficient K7=1 i.e. without wall number.
Step 9, determine that each height section of forming part will fill place level number Y, the filling week number Z of inner ring and not have to filling
The layer week number Z ' of inner ring.
In height section 1 (j=1), the level number that need to fill inner ring is: Y=1+k1× n≤36 (n=0,1,2 ...) i.e. Y
All number Z=2.0 × z of=1,2,3 ... 36 layermin·1=2, remainder layer week number is Z '=zmin·1=1.
In height section 2 (j=2), the level number that need to fill inner ring is: Y=37+k2× n≤46 (n=0,1,2 ...) i.e. Y
All number Z=2.0 × z of=37,39,41 ... 45 layermin·1=2, remainder layer week number is Z '=zmin2=1.
In height section 3 (j=3), the level number that need to fill inner ring is: Y=47+k3× n≤69 (n=0,1,2 ...) i.e. Y
All number Z=2.0 × z of=47,49,81 ... 69 layermin·3=2, remainder layer week number is Z '=zmin·3=1.
In height section 4 (j=4), the level number that need to fill inner ring is: Y=70+k4× n≤85 (n=0,1,2 ...) i.e. Y
All number Z=2.0 × z of=70,72,74 ... 84 layermin·4=2, remainder layer week number is Z '=zmin·4=1.
In height section 5 (j=5), the level number that need to fill inner ring is: Y=86+k5× n≤98 (n=0,1,2 ...) i.e. Y
All number Z=2.0 × z of=86,89,92 ... 98 layermin·5=2, remainder layer week number is Z '=zmin5=1.
In height section 6 (j=6), the level number that need to fill inner ring is: Y=99+k6× n≤107 (n=0,1,2 ...) are i.e.
Y=99, all number Z=2.0 × z of 103,107 layermin·6=4, remainder layer week number is Z '=zmin6=2.
In height section 7 (j=7), the level number that need to fill inner ring is: Y=108+k6× n≤110 (n=0,1,2 ...)
That is Y=108, all number Z=2.0 × z of 109,110 layermin·7=20, remainder layer week number is Z '=zmin·7=20.
Claims (9)
1. a kind of lift height design method suitable for fused glass pellet, it is characterised in that: specifically comprise the following steps:
Step 1, design parameter is set, specifically:
The maximum step effect missing area S of given forming part, molding equipment printing fuse widths B, molding equipment maximum are beaten
Print lift height hmax, molding equipment minimum print lift height hmin, each section bus of forming part be straight line face inclination angle
φi, wherein i is the number in the face that each section bus of forming part is straight line, and i is the integer more than or equal to 1, φiFor molding
The angle of plane face normal vector and printing table top normal vector；
Step 2, the altitude range in each face of forming part is determined；
Step 3, the length value l in j-th of part height section of part is determinedjWith minimum angle-of-incidence θj, wherein j is the volume in height section
Number and be integer greater than 0, the height section of part is successively numbered from the bottom up using Arabic numerals；
Step 4, according to the minimum angle-of-incidence θ in step 3 resulting j-th of height sectionjSeek the lift height in j-th of height section
hj；
Step 5, the stratification range in j-th of height section is sought according to the resulting result of step 4；
Step 6, the most Xiao Zhou number z in j-th of height section is soughtmin·j；
Step 7, lift height counting period coefficient k in j-th of height section is soughtj；
Step 8, to the most Xiao Zhou number z in j-th of height sectionmin·jWith interval coefficient kjIt is modified；
Step 9, determine that j-th of height section of forming part will fill place level number Y, the filling week number Z of inner ring and not have to filling
The layer week number Z ' of inner ring.
2. a kind of lift height design method suitable for fused glass pellet according to claim 1, it is characterised in that:
Detailed process is as follows for the step 2:
Specifically: for the feature of geometry outside forming part, it is bent for being divided into face that section bus is straight line and section bus
Two kinds of the face situation of line；
It a) is the face of straight line for section bus, the altitude range in face is the printing table top normal vector direction of the origin-to-destination in face
Distance；
B) it is the face of curve for section bus, curved surface is subjected to equidistant cutting, cutting quantity along the direction perpendicular to horizontal plane
It is m, cutting density degree and final molding surface quality are positively correlated, after cutting is completed, from vertical segmentation lines and curved surface
Point of intersection level is crossed to get the altitude range of m curved surface.
3. a kind of lift height design method suitable for fused glass pellet according to claim 2, it is characterised in that:
Detailed process is as follows for the step 3:
According to step 2 determination as a result, each face altitude range is divided part to printing table top normal vector direction projection
For several height sections, and determine j-th of part height siding-to-siding block length value lj, ljThat is j-th of height section is for printing table top
The length value of normal vector direction projection；
Enable the declination angle for being located at the face that j-th of part height section inner section bus is straight lineq, wherein the integer of q ∈ (1, i), right
In the face that section bus is curve, the equidistant segmentation lines and cross section curve point of intersection being located in j-th of part height section are enabled
Inclination angle is βp, the wherein integer of p ∈ (1, m), in φqAnd βpIt is middle to choose the inclination angle theta that minimum value is j-th of height sectionj。
4. a kind of lift height design method suitable for fused glass pellet according to claim 3, it is characterised in that:
Detailed process is as follows for the step 4:
H is sought by following formula (1)j:
Wherein, S is that the maximum step effect of forming part lacks area；
Due to θjFor the minimum angle-of-incidence in j-th of height section, so hjFor the minimum lift height in j-th of height section, press
Equipment machining accuracy retains decimal digits, works as hj<hminWhen, i.e., process equipment minimum lift height, which is greater than, calculates resulting minimum
When lift height, h is takenj=hmin, otherwise hj≥hmin, then the lift height in j-th of height section is calculated value h itselfj。
5. a kind of lift height design method suitable for fused glass pellet according to claim 4, it is characterised in that:
Detailed process is as follows for the step 5:
Step 5.1, the hierarchy number in j-th of height section is sought by following formula (2):
Step 5.2, the residual altitude in j-th of height section is sought by following formula (3)
Δhj: Δ hj=lj-Cj×hj(3)；
If residual altitude Δ hjIt is not 0, then most upper two layers of the shape layer and residual altitude Δ h in j-th of height sectionjMerge into 3
Formable layer layer,
Step 5.3, enable step 5.2 merge after 3 formable layer layers with a thickness of h ', h ' is asked by following formula (4):
If h ' < hminThen h '=hminIf h ' > hmin, then h ' is formula (4) resulting calculated value itself；
Step 5.4, if residual altitude Δ hjIt is not 0, the molding number of plies C ' in j-th of height section is sought by following formula (5)j
Are as follows:
C′j=Cj+1 (5)；
If residual altitude Δ hjIt is 0, then C 'j=Cj；
Step 5.5, the level number range for determining j-th of height section is Hj(yj,yj+C′j), wherein yjIndicate j-th of height section
Starting level number, yj+C′jIndicate the termination level number in j-th of height section.
6. a kind of lift height design method suitable for fused glass pellet according to claim 5, it is characterised in that:
Detailed process is as follows for the step 6:
Most Xiao Zhou's number z in j-th of height section of forming part is sought by following formula (6)min·j:
7. a kind of lift height design method suitable for fused glass pellet according to claim 6, it is characterised in that:
Detailed process is as follows for the step 7:
Lift height counting period coefficient k in j-th of height section is sought by following formula (7)j:
Wherein, kjTake the integer less than or equal to 4, and kjNot equal to 0, work as kj4 are taken when > 4.
8. a kind of lift height design method suitable for fused glass pellet according to claim 7, it is characterised in that:
Detailed process is as follows for the step 8:
Step 8.1, the judgement before being modified, specifically:
The critical angle α in j-th of height section of forming part is sought by formula (8)sj:
Work as θj<αsiWhen, then the parameter in j-th of height section is modified, on the contrary θj≥αsjWhen, then it is not required to correct；
Step 8.2, to through step 8.1 judgement after the parameter to be modified be modified, specifically:
The most Xiao Zhou number z in j-th of height section is corrected by following formula (9)min·j:
If zmin·j> 10, then zmin·j=10；Correcting the interval coefficient in j-th of height section is kj=1.
9. a kind of lift height design method suitable for fused glass pellet according to claim 8, it is characterised in that:
Detailed process is as follows for the step 9:
J-th of height section of forming part is asked to fill the place level number Y of inner ring by following formula (10):
Y=yj+n×kj≤yj+C′j(10)；
Wherein, n is positive integer；
By following formula (11) ask j-th of height section to fill inner ring layer all numbers:
Z=2 × zmin·j(11)；
Without layer week number the Z '=z for filling inner ringmin·j。
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| CN107945277B (en) * | 2017-11-26 | 2021-08-03 | 中国人民解放军陆军装甲兵学院 | Equidistant curved surface layering method based on additive remanufacturing point cloud model |
| CN108995219B (en) * | 2018-05-31 | 2021-04-20 | 共享智能铸造产业创新中心有限公司 | Slicing method with variable layer thickness, 3D printing method and 3D printed product |
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| CN109954881B (en) * | 2019-03-22 | 2020-06-26 | 北京科技大学 | Partition-based 3D printing method with variable line width and variable layer thickness |
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| EP4259360A4 (en) * | 2020-12-14 | 2024-10-30 | Entegris, Inc. | MULTILAYER COMPOSITES WITH DIFFERENT LAYER THICKNESSES AND RELATED METHODS |
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