CN104401004B - The control method of 3D printers more than five printheads, Method of printing - Google Patents
The control method of 3D printers more than five printheads, Method of printing Download PDFInfo
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- CN104401004B CN104401004B CN201410445665.3A CN201410445665A CN104401004B CN 104401004 B CN104401004 B CN 104401004B CN 201410445665 A CN201410445665 A CN 201410445665A CN 104401004 B CN104401004 B CN 104401004B
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- 238000007639 printing Methods 0.000 title claims abstract description 72
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- 238000004080 punching Methods 0.000 claims 2
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- 238000010146 3D printing Methods 0.000 description 7
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Abstract
The invention provides a kind of control method of 3D printer more than five printhead, Method of printing, including：Obtain the shape in the section of workpiece；It is δ to determine the minimum spacing between two printheads；Number of print i, i=2k+1, k >=2 are determined, and k is positive integer；A lead-out wire is determined in the section, the section is divided into the first subregion and the second subregion by the lead-out wire, and the area ratio of first subregion and the second subregion is (2k 2)：3.The above method can printhead be divided into two groups, one group is 3 positive integer times, and another group is 2 positive integer times, and control respectively printed.
Description
Technical field
The present invention relates to 3D printing technique field, a kind of controlling party of 3D printer more than five printhead is particularly related to
Method, Method of printing.
Background technology
3D printing is new forming technique, and wherein filler accumulation type printing technique is the most frequently used 3D printing technique.It is existing
The structure for having the 3D printer in technology is typically all divided into two layers up and down, and upper strata is printhead and XY drive mechanisms, and lower floor is load
Thing platform.The printing that the plane that its XY drive mechanism at the middle and upper levels includes to be formed in X-axis and Y-axis can move
Head, and lower floor is provided with article carrying platform.The article carrying platform of 3D printer of the prior art can rise or fall along Z-direction,
So as to by layer printing 3D workpiece.
In printing, filler accumulation type printing technique is the printhead fusion filler using heating, by controlling printhead
The filler of molten is stacked on specified location, so as to the 3D workpiece by 3D model conversations into entity.This molding mode is maximum
The advantages of be：Filler cost is low, waste less, printer arrangement simply for ease of maintenaince；But shortcoming is also apparent from：Print speed
Slowly.By taking MaMerbot printer as an example, the time for being filled up completely with square needs for printing 5 centimeter squares is about 20
Minute, the bigger or more complicated structure workpiece of print volume usually needs several hours.There is a kind of 3D printing in the prior art
Machine uses three print head structures, i.e., carries out 3D printing, and the two printheads point using two printheads being fixed together
Do not load inserts of different nature, such as a printhead filling major ingredient+supporting material and another printhead filling mass-tone+decoration
Color, to realize that the diverse location in model accumulates different materials.Because the two printheads are integrally fixed at together, therefore its
X-axis and Y-axis coordinate are nearly identical, and all only have a printhead working at any time, therefore it is to printing effect
Improvement it is extremely limited.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of control method of 3D printer more than five printhead, printing
Method, print speed can be improved by the section of multiple printheads while the printing workpiece that cooperate.
In order to achieve the above object, the embodiment of the present invention proposes a kind of controlling party of 3D printer more than five printhead
Method, including：
Obtain the shape in the section of workpiece；It is δ to determine the minimum spacing between two printheads；
Number of print i, i=2k+1, k >=2 are determined, and k is positive integer；A lead-out wire is determined in the section,
The section is divided into the first subregion and the second subregion by the lead-out wire, and first subregion and the second subregion
Area ratio is (2k-2): 3；
A banded nucleus conflict region is generated centered on the lead-out wire, the width in the nucleus conflict region is not
Less than δ；
Longitudinal lead-out wire that M-1 bars are parallel to each other is determined in first subregion, the M-1 bars longitudinal direction lead-out wire will
First subregion is divided into longitudinal subregion of M area equation, M=(2k-2)；In each longitudinal subregion
Set a straight line extended laterally that each longitudinal subregion is divided into the final subregion of two area equations；And
Join end to end to form a broken line extended laterally between all straight lines extended laterally；Drawn with the broken line and longitudinal direction
Each intersection point of line is the center of circle, is not less thanThe middle conflict area of circle is formed for radius；And the periphery of the circle is with being somebody's turn to do
Broken line and longitudinal lead-out wire form 2M non conflicting subregion；
Determine from a starting point 0* in second subregion to be that starting point draws 3 in second subregion
Lead-out wire by second subregion to be divided into 3N area identical subregion, and adjacent two in the 3N bars lead-out wire
Angle between bar lead-out wire is equal；Using the starting point 0* as round dot,For the circular middle conflict area of radius generation；
Generate the middle conflict area of banding, and the width of the middle conflict area of each banding respectively in the both sides of each lead-out wire
Degree is not less thanAnd non conflicting subregion is formed between the middle conflict area of the banding.
Wherein, as N=1, lead-out wire is three, and the starting point 0* is determined by the following method：
Generating a slope isAnd the left and right area in the section can be divided into 1: 2 straight line l3；Generation one is tiltedly
Rate isAnd the left and right area in the section can be divided into 2: 1 straight line l4；The straight line l3With straight line l4With cross-sectional right side
Intersection point is respectively T2And T1；
Generate two straight line l being parallel to each other1With straight line l2, and the straight line l1With straight line l2Can be by described section etc.
It is divided into the subregion of three area equations；And the straight line l1With straight line l2Intersection point with cross-sectional left is respectively L1And L2；
Determine intersection point L1With T2Between the first curve, each point on first curve meets following condition：These
Point is fan-shaped towards identical first for 120 ° respectively as the central angle of center of circle generation, and the section can be divided into left and right
Two parts, and the area ratio of the part in sector and the part outside sector is 2: 1；
Determine intersection point L2With T1Between the second curve, each point on second curve meets following condition：These
Point is fan-shaped towards identical second for 120 ° respectively as the central angle of center of circle generation, and the section can be divided into left and right
Two parts, and the area ratio of the part in sector and the part outside sector is 2: 1；And first sector and second fan-shaped one
Bar side overlaps, and another a line extends towards opposite direction；
Determine the intersection point of first curve and the second curve as starting point 0*；And first sector and the second sector
Side be respectively three described lead-out wires.
Wherein, the starting point 0* is determined by the following method：
Any point starts one the first curve for running through the section of generation on the periphery in the section, and described first is bent
Each point on line meets following condition：These are 120 ° towards identical the respectively as central angles of center of circle generation
One is fan-shaped, the section can be divided into left and right two parts, and the area ratio of the part in sector and the part outside sector is 2
∶1；
One the second curve for running through the section of other any point generation on the periphery in the section, described second
Each point on curve meets following condition：These are 120 ° towards identical respectively as central angles of center of circle generation
Second is fan-shaped, and the section can be divided into left and right two parts, and the area ratio of the part in sector and the part outside sector
For 2: 1；And first sector overlaps with the second fan-shaped a line, another a line extends towards opposite direction；
Determine the intersection point of first curve and the second curve as starting point 0*；And first sector and the second sector
Side be respectively described 3N bar lead-out wires.
Wherein, the starting point 0* is determined by the following method：The starting point 0* is determined using the method for exhaustion.
Wherein, methods described also includes：
Circumscribed regular polygon is generated using the middle conflict area as polygon along the circular middle conflict area,
The regular polygon has 2 × 3 × N bars side, and summit corresponding to the regular polygon is located on the lead-out wire respectively；Along institute
Draw along the parallel lines of lead-out wire both sides extension to form the middle conflict area of banding on other summits for stating regular polygon.
Wherein, the beginning and end of the broken line of first subregion is respectively farthest positioned at the periphery both sides in the section
The point at end.
Meanwhile the embodiment of the present invention also proposed a kind of Method of printing of 3D printer more than five printhead, its feature
It is, including：
Determine circular middle conflict area and the non conflicting sub-district of the first subregion respectively using such as preceding any method
Domain, and the middle conflict area of the second subregion and non conflicting subregion；The middle battleground of wherein described second subregion
Domain includes the middle conflict area of polygon and the middle conflict area of banding, or the middle conflict area including circle and banding
Middle conflict area；
Following operate is performed for first subregion：
Utilize the circular middle conflict area of multiple printhead isochronous printings of the 3D printer；Utilize the 3D printing
Non conflicting subregion described in multiple printhead isochronous printings of machine；
Wherein included using non conflicting subregion described in multiple printhead isochronous printings of the 3D printer：
The printhead is grouped, every group there are 2 printheads；The non conflicting subregion is divided into P groups, every group includes one
Individual circular middle conflict area and four non conflicting subregions of surrounding；It is relative using every group of two printhead isochronous printings
Two non conflicting subregions, and every group of printhead isochronous printing, and adjacent two groups of two adjacent printheads are beaten
Two non conflicting subregions of print are also oppositely arranged；
Following operate is performed for second subregion：
Printed respectively using three printheads be in 120 ° non conflicting subregion or banding among conflict area, printing
After make the printhead towards same direction move after print adjacent region；Using in a printhead prints circle
Between conflict area or the middle conflict area of polygon；
Using the nucleus conflict region of one or more printhead prints bandings.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
The above method can printhead be divided into two groups, one group for 3 positive integer times, another group for 2 positive integer times,
Control is printed respectively.It can prevent that printhead clashes in printing, and can be carried out simultaneously using multiple printheads
Print to improve printing effect.
Brief description of the drawings
There is Fig. 1 the movement locus plane of three printheads of the 3D printer of three printheads and the loading of bottom to put down
The structural representation in face；
Fig. 2 is the position view between three printheads；
Fig. 3 is the structural representation of the minimum spacing δ between two printheads；
Fig. 4 is the schematic diagram using a specific embodiment of 5 printheads；
Fig. 5 is the schematic diagram of the first subregion；
Fig. 6 is the schematic diagram of the second subregion.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body example is described in detail.
The movement locus of the printhead of 3D printer is a plane in the prior art, so if wanting to set up multiple phases
Mutually independent printhead must just make the mutual movement locus plane of these printheads be nonoverlapping, such as shown in Fig. 1
Be 3 printheads 3D printer.And the distal end of this few printhead must be made in one plane, so just can be by
Multiple printheads print a printing surface (a namely cross section of workpiece) for workpiece simultaneously, i.e., as shown in Figure 2.And adopt
Principle with the 3D printer of two printheads is the same, and may also appear in that printhead in the course of work clashes asks
Topic.
Therefore, the embodiment of the present invention is that print area is divided into the region of several Lothrus apterus, then utilizes multiple printings
Head is printed respectively, to prevent from clashing between printhead.And print area is simply cut into L sub- print areas
Afterwards, the problem of two printheads of generation are easy in printing while print two adjacent sub- print areas, can thus send out
Printhead conflict occurs for the raw seam crossing in two neighboring child print region.Simultaneously because the shape for the workpiece that 3D printer is printed
Shape can not possibly be identical, therefore can not accomplish to automatically generate beating for Lothrus apterus using the method pre-set in the prior art
Print region simultaneously controls multiple printheads collaboration of printer to print together.And if the method for segmentation print area is excessively coarse,
It can then cause the lifting amplitude to printing effect little, this is also to be wasted to a kind of of the hardware resource of costliness.
For such case, the embodiment of the present invention propose a kind of three printhead 3D printer print area control methods,
Method of printing, without considering that the shape can of printing workpiece is divided into multiple child print areas according to number of print automatically in advance
Domain, and the automatic Lothrus apterus printing workpiece of multiple printheads is controlled, and multiple printheads much of that can be enabled as far as possible uniform
Share out the work to improve printing effect.
The embodiment of the present invention proposes a kind of control method of 3D printer more than five printhead for this, is by printhead
It is divided into two groups, one group 2 of positive integer times, one group 3 of positive integer times.Therefore this method includes：
Obtain the shape in the section of workpiece；It is δ to determine the minimum spacing between two printheads；
Determine that number of print i, i=2k+1 (k >=2) and k are positive integer；A lead-out wire is determined in the section,
The section is divided into the first subregion and the second subregion by the lead-out wire, and first subregion and the second subregion
Area ratio is (2k-2): 3.
After the completion of segmentation, the first subregion and the second subregion are illustrated respectively individually below.
【First subregion】
Obtain the shape of the first subregion of workpiece；It is δ to determine the minimum spacing between two printheads；
Determine that number of print i, i are greater than the even number equal to 4；Determine that K-1 bars are mutually flat in first subregion
First subregion is divided into longitudinal sub-district of K area equation by capable longitudinal lead-out wire, the K-1 bars longitudinal direction lead-out wire
Domain, wherein K=Ni, N are positive integer；
A straight line extended laterally is set to divide each longitudinal subregion in each longitudinal subregion
It is segmented into the final subregion of two area equations；And join end to end to form a transverse direction between all straight lines extended laterally
The broken line of extension；
It is the center of circle, is not less than in each intersection point of the broken line and longitudinal lead-out wireFormed for radius in circle
Between conflict area；And the periphery of the circle forms 2K non conflicting subregion with the broken line and longitudinal lead-out wire.
Wherein, the beginning and end of the broken line is respectively that the periphery of first subregion is located at both sides distalmost end
Point.
Embodiment for first group of four printhead as shown in Figure 5.
【Second subregion】
Obtain the shape in the section of workpiece；It is δ to determine the minimum spacing between two printheads；
It is that starting point draws 3N bars lead-out wire so that the section is divided into 3N from a starting point 0* in the section
Individual area identical subregion, and the angle between two lead-out wires adjacent in the 3N bars lead-out wire is identical；With described
Initial point 0* as round dot,For the circular middle conflict area of radius generation；Band is generated respectively in the both sides of each lead-out wire
The middle conflict area of shape, and the width of the middle conflict area of each banding is not less thanAnd the middle battleground of the banding
Non conflicting subregion is formed between domain.
Certainly, all it is to divide in section for three non conflicting in embodiment the application being further described below
Subregion.It can also be divided into 3N non conflicting subregion during actual use, N=1,2,3......, this technical scheme is still
Within the protection domain of the application.Split the method for these non conflicting subregions simultaneously it is clear that general, be used only to
Used fan-shaped number is different with central angle during division, will not be repeated here.
Specifically, determine that starting point 0* and lead-out wire are by a very crucial technology of section trisection.The present invention
Embodiment gives three kinds of schemes to determine starting point 0*.Certainly, those skilled in that art can be according to oneself to the application
Technology can understanding determine corresponding method, and these methods also should be within protection scope of the present invention.
Specifically, first method is a kind of method of efficiency highest in three kinds of methods, it includes：
Generating a slope is(angle of inclination is -60 °) and the left and right area of workpiece interface is divided into straight than 1: 2
Line l3；Generating a slope is(angle of inclination is 60 °) and the left and right area of workpiece interface is divided into the straight line l than 2: 14；Institute
State straight line l3With straight line l4Intersection point with cross-sectional right side is respectively T2And T1；
Generate two straight line l being parallel to each other1With straight line l2, and the straight line l1With straight line l2Can be by described section etc.
It is divided into the subregion of three area equations；And the straight line l1With straight line l2Intersection point with cross-sectional left is respectively L1And L2；
As shown in Figure 6, determine intersection point L1With T2Between the first curve, each point on the curve meets following
Condition：These are fan-shaped towards identical first for 120 ° respectively as the central angle of center of circle generation, can be by the section
Left and right two parts are divided into, and the area ratio of the part in sector and the part outside sector is 2: 1；
As shown in Figure 6, determine intersection point L2With T1Between the second curve, each point on the curve meets following
Condition：These are fan-shaped towards identical second for 120 ° respectively as the central angle of center of circle generation, can be by the section
Left and right two parts are divided into, and the area ratio of the part in sector and the part outside sector is 2: 1；It is and described second fan-shaped with the
Two fan-shaped a lines overlap, and another a line extends towards opposite direction；
Determine the intersection point of first curve and the second curve as starting point 0*.
Second method includes：The starting point 0* is determined using the method for exhaustion.This method efficiency is minimum.
What is generated in the above method is a circular middle conflict area, so causes the band generated along the lead-out wire
The middle conflict area of shape is a camber line with circular middle conflict area seam crossing, and this results in the middle battleground of banding
Domain is an irregular figure, can be the increase of printhead mobile route in printing.Therefore methods described also includes：Along the circle
Middle conflict area generate circumscribed regular polygon using middle the conflict area as polygon, the regular polygon is with 2
× 3 × N bars side, and summit corresponding to the regular polygon is located on the lead-out wire respectively；Along other of the regular polygon
Draw along the parallel lines of lead-out wire both sides extension to form the middle conflict area of banding on summit.
Specifically, can be as shown in Figure 6, including：
As shown in Figure 6, after starting point 0* and three lead-out wires are determined using any means, done outside starting point 0*
One external regular hexagon, the regular hexagon have six drift angle A1-A6；Wherein three are distinguished into 120 ° drift angle A1, A3, A5
On three lead-out wires.Then extension line is done into extend to section in six sides of regular hexagon along three lead-out wires respectively
Edge, so that this six extension lines form the middle conflict area T of six bandings11, T31, T35, T25, T23, T13And three
Non conflicting subregion T1, T2, T3.Certain this identification means are only to facilitate identification, wherein T13And T23It is also assumed that it is
The middle conflict area of one banding.
In order to maximize printing effect, the middle conflict area relative to three bandings into hexagonal angle can be first printed；Appoint
Moved immediately after the completion of what printhead prints and beat the non conflicting area adjacent with the middle conflict area of the banding of the completion
Domain, it is not necessary to wait three printheads to be completed the middle conflict area just movement of banding.
And after three printheads are completed the middle conflict area of the banding, non conflicting region is not continued to complete,
But cross the non conflicting region and continue to move to print the middle conflict area of unprinted banding.Likewise, any
Reverse movement continues to beat its corresponding non conflicting region immediately after the completion of one printhead prints.Printing can so be maximized
Efficiency.
Exemplified by shown in Fig. 6, the above method is specially：
Step 1, T can be printed by printhead 111, printhead 2 prints, and printhead 3 prints T35.If printhead 1 is first complete
Then continue to print T into printing1, continue to print T if printhead 2 first completes printing2, if printhead 3 first complete printing if after
Continuous printing T3.Work as T11、T23、T35It is done, immediately enters step 2.
Step 2, T is now printed by printhead 113, the printing of printhead 2 T25, the printing of printhead 3 T31.If printhead 1 is first
Printing is completed then to continue to print T1, continue to print T if printhead 2 first completes printing2, if printhead 3 first completes printing
Continue to print T3.Work as T13、T25、T31It is done, immediately enters step 3；
Step 3, printhead 1 continue to print T1, printhead 2 continue print T2, printhead 3 continue print T3, until completing.
A kind of it is also proposed that Method of printing of 3D printer more than five printhead, it is characterised in that including：
Determine circular middle conflict area and the non conflicting sub-district of the first subregion respectively using such as preceding any method
Domain, and the middle conflict area of the second subregion and non conflicting subregion；The middle battleground of wherein described second subregion
Domain includes the middle conflict area of polygon and the middle conflict area of banding, or the middle conflict area including circle and banding
Middle conflict area；
Following operate is performed for first subregion：
Utilize the circular middle conflict area of multiple printhead isochronous printings of the 3D printer；Utilize the 3D printing
Non conflicting subregion described in multiple printhead isochronous printings of machine；
Wherein included using non conflicting subregion described in multiple printhead isochronous printings of the 3D printer：
The printhead is grouped, every group there are 2 printheads；The non conflicting subregion is divided into P groups, every group includes one
Individual circular middle conflict area and four non conflicting subregions of surrounding；It is relative using every group of two printhead isochronous printings
Two non conflicting subregions, and each group printhead isochronous printing, and adjacent two groups of two adjacent printheads are beaten
Two non conflicting subregions of print are also oppositely arranged；
Following operate is performed for second subregion：
Printed respectively using three printheads be in 120 ° non conflicting subregion or banding among conflict area, printing
After make the printhead towards same direction move after print adjacent region；Using in a printhead prints circle
Between conflict area or the middle conflict area of polygon；
Using the nucleus conflict region of one or more printhead prints bandings.And the nucleus conflict region of banding can be cut
Multiple fritters are segmented into print respectively.
As shown in Fig. 4 the situation of seven printheads, printhead have been divided into one group 4 one group 3.
For the region of four printheads, can with as shown in figure 5, including：
Determine leftmost point A on section0And the point A of rightmostk；
Dichotomy constantly is utilized, makes the k-1 bars straight line I parallel with the Y-axis in section1、I2、I3；These three straight lines will be cut
Face has been divided into the region of four area equations.Then from A0P1 and P2 horizontal stroke are bisected into play strokes and dots one by one, left side region
Line, the horizontal line and straight line l1Intersect at point A1；Then again by A1To play the horizontal stroke that strokes and dots one divides the second left side equally and is divided into P3 and P4
Line, the horizontal line and straight line l1Intersect at point A2.By that analogy, until signing in Ak.Now section is cut for 8 areas
Want the region waited.Then in A1、A2、A3A circle is respectively done for the center of circle, the radius of the circle is not less than
Then four printheads are divided into two groups, are responsible for for first group printing P1, P2, P3, P4, center of circle A1Circle；Second
Group is responsible for printing P5, P6, P7, P8, center of circle A3Circle.Two relative non conflicting subregions of isochronous printing are wanted in printing,
And the M groups printhead isochronous printing, and two non conflicting subregions of adjacent two groups of two adjacent printhead prints
Also it is oppositely arranged.That is, first group of printhead can first print the two relative non conflicting subregions of P1 and P4, then
Second group of printhead just needs first to print P5 and P8.Can certainly first group first print P2 and P3, second group of isochronous printing P6
And P7.
And in printing A1、A2、A3Three bowlders, any three of four printheads can be used, restriction is made not to this.
And the middle conflict area of circle can be first printed, it can also first print non conflicting subregion.
For the second subregion of three printheads as shown in Figure 6, using following methods：
Step 1, T can be printed by printhead 111, printhead 2 prints, and printhead 3 prints T35.If printhead 1 is first complete
Then continue to print T into printing1, continue to print T if printhead 2 first completes printing2, if printhead 3 first complete printing if after
Continuous printing T3.Work as T11、T23、T35It is done, immediately enters step 2.
Step 2, T is now printed by printhead 113, the printing of printhead 2 T25, the printing of printhead 3 T31.If printhead 1 is first
Printing is completed then to continue to print T1, continue to print T if printhead 2 first completes printing2, if printhead 3 first completes printing
Continue to print T3.Work as T13、T25、T31It is done, immediately enters step 3；
Step 3, printhead 1 continue to print T1, printhead 2 continue print T2, printhead 3 continue print T3, until completing.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
- A kind of 1. control method of 3D printer more than five printhead, it is characterised in that including：Obtain the shape in the section of workpiece；It is δ to determine the minimum spacing between two printheads；Number of print i, i=2k+1, k >=2 are determined, and k is positive integer；A lead-out wire is determined in the section, it is described The section is divided into the first subregion and the second subregion, and the area of first subregion and the second subregion by lead-out wire Than for (2k-2): 3；A banded nucleus conflict region is generated centered on the lead-out wire, the width in the nucleus conflict region is not less than δ；Longitudinal lead-out wire that M-1 bars are parallel to each other is determined in first subregion, the M-1 bars longitudinal direction lead-out wire is by described in First subregion is divided into longitudinal subregion of M area equation, M=2k-2；One is set in each longitudinal subregion The straight line that bar extends laterally is so that each longitudinal subregion to be divided into the final subregion of two area equations；And all institutes State and join end to end to form a broken line extended laterally between the straight line extended laterally；With the every of the broken line and longitudinal lead-out wire One intersection point is the center of circle, is not less thanThe middle conflict area of circle is formed for radius；And the periphery of the circle and the broken line and Longitudinal lead-out wire forms 2M non conflicting subregion；Determine from a starting point 0* in second subregion to be that starting point extraction 3N bars draw in second subregion Outlet by second subregion to be divided into 3N area identical subregion, and two adjacent in the 3N bars lead-out wire Angle between lead-out wire is equal；Using the starting point 0* as round dot,For the circular middle conflict area of radius generation； The both sides of each lead-out wire generate the middle conflict area of banding, and the width of the middle conflict area of each banding respectively It is not less thanAnd non conflicting subregion is formed between the middle conflict area of the banding.
- 2. the control method of 3D printer more than five printhead according to claim 1, it is characterised in that as N=1 Lead-out wire is three, and the starting point 0* is determined by the following method：Generating a slope isAnd the left and right area in the section can be divided into 1: 2 straight line l3；Generating a slope isAnd the left and right area in the section can be divided into 2: 1 straight line l4；The straight line l3With straight line l4With the intersection point of cross-sectional right side Respectively T2And T1；Generate two straight line l being parallel to each other1With straight line l2, and the straight line l1With straight line l2The section can be divided into three The subregion of individual area equation；And the straight line l1With straight line l2Intersection point with cross-sectional left is respectively L1And L2；Determine intersection point L1With T2Between the first curve, each point on first curve meets following condition：These points are each It is fan-shaped towards identical first for 120 ° from the central angle generated as the center of circle, the section can be divided into left and right two Point, and the area ratio of the part in sector and the part outside sector is 2: 1；Determine intersection point L2With T1Between the second curve, each point on second curve meets following condition：These points are each It is fan-shaped towards identical second for 120 ° from the central angle generated as the center of circle, the section can be divided into left and right two Point, and the area ratio of the part in sector and the part outside sector is 2: 1；And first sector and the second fan-shaped a line Overlap, another a line extends towards opposite direction；Determine the intersection point of first curve and the second curve as starting point 0*；And first sector and the second fan-shaped side Three respectively described lead-out wires.
- 3. the control method of 3D printer more than five printhead according to claim 1, it is characterised in that the starting Point 0* is determined by the following method：Any point starts one the first curve for running through the section of generation on the periphery in the section, on first curve Each point meet following condition：These are 120 ° respectively as central angles of center of circle generation and fanned towards identical first Shape, the section can be divided into left and right two parts, and the area ratio of the part in sector and the part outside sector is 2: 1；Other any point on the periphery in the section generates second curve for running through the section, second curve On each point meet following condition：These are 120 ° towards identical second respectively as central angles of center of circle generation Sector, the section can be divided into left and right two parts, and the area ratio of the part in sector and the part outside sector is 2: 1；And first sector overlaps with the second fan-shaped a line, another a line extends towards opposite direction；Determine the intersection point of first curve and the second curve as starting point 0*；And first sector and the second fan-shaped side Respectively described 3N bar lead-out wires.
- 4. the control method of 3D printer more than five printhead according to claim 1, it is characterised in that the starting Point 0* is determined by the following method：The starting point 0* is determined using the method for exhaustion.
- 5. the control method of the 3D printer more than five printheads according to claim any one of 1-4, it is characterised in that Methods described also includes：Circumscribed regular polygon is generated using the middle conflict area as regular polygon, institute along the circular middle conflict area Stating regular polygon has 2 × 3 × N bars side, and summit corresponding to the regular polygon is located on the lead-out wire respectively；Described in Draw along the parallel lines of lead-out wire both sides extension to form the middle conflict area of banding on other summits of regular polygon.
- 6. the control method of 3D printer more than five printhead according to claim 1, it is characterised in that described first The beginning and end of the broken line of subregion is respectively the point of the periphery both sides distalmost end positioned at the section.
- A kind of 7. Method of printing of 3D printer more than five printhead, it is characterised in that including：Determine circular middle conflict area and the non conflicting of the first subregion respectively using such as any methods of claim 5-6 Subregion, and the middle conflict area of the second subregion and non conflicting subregion；Punching among wherein described second subregion Prominent region includes middle the conflict area of polygon and middle the conflict area of banding, or including circular middle conflict area with The middle conflict area of banding；Following operate is performed for first subregion：Utilize the circular middle conflict area of multiple printhead isochronous printings of the 3D printer；Utilize the 3D printer Non conflicting subregion described in multiple printhead isochronous printings；Wherein included using non conflicting subregion described in multiple printhead isochronous printings of the 3D printer：The printhead is grouped, every group there are 2 printheads；The non conflicting subregion is divided into P groups, every group includes a circle The middle conflict area of shape and four non conflicting subregions of surrounding；Using every group of two printhead isochronous printings it is relative two Individual non conflicting subregion, and each group printhead isochronous printing, and two of adjacent two groups of two adjacent printhead prints Non conflicting subregion is also oppositely arranged；Following operate is performed for second subregion：Print the non conflicting subregion for being in 120 ° respectively using three printheads or banding centre conflict area, printing finish The printhead is set to print adjacent region after being moved towards same direction afterwards；Utilize the circular middle punching of a printhead prints Prominent region or the middle conflict area of polygon；Using the nucleus conflict region of one or more printhead prints bandings.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445665.3A CN104401004B (en) | 2014-09-04 | 2014-09-04 | The control method of 3D printers more than five printheads, Method of printing |
| HK15108235.1A HK1207601A1 (en) | 2014-09-04 | 2015-08-25 | Method of controlling 3d printers with at least five extruders 3d |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445665.3A CN104401004B (en) | 2014-09-04 | 2014-09-04 | The control method of 3D printers more than five printheads, Method of printing |
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| Publication Number | Publication Date |
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| CN104401004A CN104401004A (en) | 2015-03-11 |
| CN104401004B true CN104401004B (en) | 2018-02-02 |
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| CN201410445665.3A Expired - Fee Related CN104401004B (en) | 2014-09-04 | 2014-09-04 | The control method of 3D printers more than five printheads, Method of printing |
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| HK (1) | HK1207601A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108357087B (en) * | 2017-01-26 | 2020-06-23 | 三纬国际立体列印科技股份有限公司 | Shell object printing method of 3D model and printing starting point calculation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002021226A2 (en) * | 2000-09-07 | 2002-03-14 | Honeywell International Inc. | Tool path planning process for component by layered manufacture |
| EP1857286A1 (en) * | 2006-05-18 | 2007-11-21 | SAGEM Communication | Printing method |
| JP5133841B2 (en) * | 2008-10-10 | 2013-01-30 | 大日本スクリーン製造株式会社 | Slice image generation method and modeling apparatus |
| CN103722898A (en) * | 2014-01-21 | 2014-04-16 | 杭州先临三维科技股份有限公司 | Three-dimensional printing control system and three-dimensional printer |
-
2014
- 2014-09-04 CN CN201410445665.3A patent/CN104401004B/en not_active Expired - Fee Related
-
2015
- 2015-08-25 HK HK15108235.1A patent/HK1207601A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002021226A2 (en) * | 2000-09-07 | 2002-03-14 | Honeywell International Inc. | Tool path planning process for component by layered manufacture |
| EP1857286A1 (en) * | 2006-05-18 | 2007-11-21 | SAGEM Communication | Printing method |
| JP5133841B2 (en) * | 2008-10-10 | 2013-01-30 | 大日本スクリーン製造株式会社 | Slice image generation method and modeling apparatus |
| CN103722898A (en) * | 2014-01-21 | 2014-04-16 | 杭州先临三维科技股份有限公司 | Three-dimensional printing control system and three-dimensional printer |
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|---|---|
| HK1207601A1 (en) | 2016-02-05 |
| CN104401004A (en) | 2015-03-11 |
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